Agricultural Fungicidal Method

The invention relates to agricultural fungicidal compositions containing as an active ingredient one or more 4-aminoquinazoline derivatives.

More particularly, it relates to agricultural fungicidal compositions containing as an active ingredient one or more 4-aminoquinazoline derivatives represented by formula (I): ##STR1## in which:

A and B are the same or different and each represents a hydrogen atom, a lower alkyl group, a halogen atom or a nitro group;

X represents an alkylene group;

Y represents an oxygen atom or a sulfur atom;

Z represents an alkyl group, an aralkyl group;

a naphthyl group, an unsubstituted phenyl group or a phenyl group substituted with 1 to 3 substituents which are the same or different and are selected from the group consisting of a lower alkyl group, an alkoxy group, an alkylthio group, a phenyl group, a trifluoromethyl group and a halogen atom; or salts thereof.

A class of 4-aminoquinazoline derivatives is disclosed in Japanese Patent Publication Specification No. 43-29033, which corresponds to U.S. Pat. No. 3,541,094 as being effective controlling agents against phytopathogenic fungi.

The inventors have found that the compounds of formula (I) show a broad and superior fungicidal activity than the known compounds mentioned above against bacteria and fungi parasitic on agricultural and horticultural plants. More specifically, the compounds of formula (I) show a remarkable controlling effect against, for example, blast, brown spot, sheath blight and bacterial leaf blight of rice plants; late blight and early blight of tomatoes; and anthracnose, downy mildew and powdery mildew of cucumbers. They also show a controlling effect against phytoparasitic soil fungi, as well as algal fungi which adversely affect the germination of rice plants.

Further, some of the compounds of formula (I) show a strong inhibiting activity of ingestion against the fourth to final instar larvae of Lepidoptera such as cabbage armyworm and tobacco cutworm, and therefore are useful as an insect repellent. Furthermore, some of the compounds of formula (I) may be used as an insecticidal and acaricidal agent gainst, e.g., two-spotted spider mite.

In the compounds of formula (I), when A and/or B each represents a lower alkyl group, it may be a straight or branched chain alkyl having 1 to 4 carbon atoms, for example, a methyl, ethyl, n-propyl, isopropyl, n-butyl or sec-butyl, preferably a methyl.

When A and/or B each represents a halogen atom, it may be, for example, a chlorine, bromine, fluorine or iodine, preferably a chlorine.

X is a straight or branched alkylene and it may be, for example, a methylene, ethylene, methylmethylene, trimethylene, ethylmethylene, dimethylmethylene, propylene, tetramethylene, 1,1-dimethylethylene, 1,2-dimethylethylene, 2,2-dimethylethylene, 1-ethylethylene, 2-ethylethylene, pentamethylene, hexamethylene, heptamethylene, octamethylene, 2-ethylhexamethylene, 5-ethylhexamethylene, decamethylene, dodecamethylene, hexadecamethylene or octadecamethylene; and it is preferably a straight or branched chain alkylene having 2 to 8 carbon atoms.

When Z is an alkyl group, it may be, for example a methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, sec-butyl, tert-butyl, n-amyl, isoamyl, sec-amyl, n-heptyl, n-octyl, 2-ethylhexyl, decyl, dodecyl, tetradecyl, hexadecyl or octadecyl; and it is preferably a straight or branched alkyl having 1 to 8 carbon atoms.

When Z is a naphthyl group, it may be a 1-naphthyl or 2-naphthyl.

When Z is an aralkyl group, it may be, for example, a benzyl, .alpha.-methylbenzyl or phenethyl, preferably a benzyl.

When Z is a phenyl group substituted with lower alkyl, the lower alkyl may be straight or branched chain alkyl having 1 to 4 carbon atoms such as methyl, ethyl, n-propyl isopropyl, n-butyl or sec-butyl, preferably methyl.

When Z is a phenyl group substituted with lower alkoxy, the lower alkoxy may be straight or branched chain alkoxy having 1 to 4 carbon atoms such as methoxy, ethoxy, n-propoxy, isopropoxy, n-butoxy or isobutoxy, preferably methoxy or ethoxy.

When Z is a phenyl group substituted with lower alkylthio, the lower alkylthio may be straight or branched chain alkylthio having 1 to 4 carbon atoms such as methylthio, ethylthio, n-propylthio, isopropylthio, n-butylthio or isobutylthio, preferably methyl thio.

When Z is a phenyl group substituted with halogen atom, the halogen atom may be chlorine, bromine, fluorine or iodine, preferably chlorine.

Of the compounds of formula (I), the preferable class of compounds is when A is a hydrogen atom or a chlorine atom; B is a hydrogen atom, a methyl group, a chlorine atom or a nitro group; X is a straight or branched alkylene group having from 2 to 8 carbon atoms; and Z is an unsubstituted phenyl group or a phenyl group substituted with 1 to 3 substituents which are the same or different and are selected from the group consisting of a methyl, methoxy, ethoxy, methylthio, trifluoromethyl and chlorine.

Among the preferable compounds mentioned above, the more preferable class of compounds is when both A and B are hydrogen atoms; X is a straight or branched chain alkylene group having 2 to 8 carbon atoms; and Z is an unsubstituted phenyl group or a phenyl group substituted with a methyl, methoxy, ethoxy or chlorine.

The most preferable class of compounds is when both A and B are hydrogen atoms; X is a straight or branched alkylene group having 2 to 8 carbon atoms; Y is an oxygen atom; and Z is an unsubstituted phenyl group or a phenyl group substituted with a methyl, methoxy, ethoxy or chlorine.

As can be understood by formula (I), the compounds of the invention have at least one asymmetric carbon atom, depending on the species of the alkylene group X. In such cases, there can be present various different optical isomers. It is, therefore, to be understood that the individual stereoisomers as well as physical or racemic mixtures thereof are included within the scope of the invention.

The compounds of formula (I) may readily form acid addition salts; and such salts may also be used as the active ingredient of the agricultural fungicides of the invention.

Acids to form addition salts include: inorganic acids such as hydrochloric acid, hydrobromic acid, nitric acid, sulfuric acid and phosphoric acid; carboxylic acids such as formic acid, oxalic acid and trichloroacetic acid; and organic sulfonic acids such as methanesulfonic acid, benzenesulfonic acid and toluenesulfonic acid. Thereof, hydrochloric acid is preferable.

Further, the compounds of formula (I) may form hydrates with water; and the hydrates may also be used as the active ingredient of the agricultural fungicides of the invention.

The compounds of formula (I) used as the active ingredient of the fungicides of the invention will be illustrated below. The numbers appended to the compounds will be used to identify them hereafter.

1. 4-(2-Methoxyethyl)aminoquinazoline

2. 4-(2-Ethoxyethyl)aminoquinazoline

3. 4-(2-Ethylthioethyl)aminoquinazoline

4. 2-Chloro-4-(2-ethoxyethyl)aminoquinazoline

5. 2-Chloro-4-(2-ethylthioethyl)aminoquinazoline

6. 6-Chloro-4-(2-ethoxyethyl)aminoquinazoline

7. 4-(2-n-Propylthioethyl)aminoquinazoline

8. 4-(2-Phenoxyethyl)aminoquinazoline

9. 4-(2-Phenylthioethyl)aminoquinazoline

10. 2-Chloro-4-(2-phenoxyethyl)aminoquinazoline

11. 2-Chloro-4-(2-phenylthioethyl)aminoquinazoline

12. 6-Chloro-4-(2-phenoxyethyl)aminoquinazoline

13. 6-Methyl-4-(2-phenoxyethyl)aminoquinazoline

14. 4-[2-(2-Chlorophenoxy)ethyl]aminoquinazoline

15. 4-[2-(2-Bromophenoxy)ethyl]aminoquinazoline

16. 4-[2-(2-Iodophenoxy)ethyl]aminoquinazoline

17. 4-[2-(2-Fluorophenoxy)ethyl]aminoquinazoline

18. 2-Chloro-4-[2-(2-chlorophenoxy)ethyl]aminoquinazoline

19. 6-Chloro-4-[2-(2-chlorophenoxy)ethyl]aminoquinazoline

20. 4-[2-(2-Methylphenoxy)ethyl]aminoquinazoline

21. 4-[2-(2-Methylphenylthio)ethyl]aminoquinazoline

22. 2-Chloro-4-[2-(2-methylphenoxy)ethyl]aminoquinazoline

23. 6-Chloro-4-[2-(2-methylphenoxy)ethyl]aminoquinazoline

24. 6-Methyl-4-[2-(2-methylphenoxy)ethyl]aminoquinazoline

25. 6-Isopropyl-4-[2-(2-methylphenoxy)ethyl]aminoquinazoline

26. 2-Chloro-4-[2-(2-methylphenylthio)ethyl]aminoquinazoline

27. 4-[2-(2-Ethylphenoxy)ethyl]aminoquinazoline

28. 4-[2-(2-Isopropylphenoxy)ethyl]aminoquinazoline

29. 4-[2-(2-sec-Butylphenoxy)ethyl]aminoquinazoline

30. 4-[2-(2-Methoxyphenoxy)ethyl]aminoquinazoline

31. 6-Methyl-4-[2-(2-methoxyphenoxy)ethyl]aminoquinazoline

32. 4-[2-(2-Ethoxyphenoxy)ethyl]aminoquinazoline

33. 6-Chloro-4-[2-(2-ethoxyphenoxy)ethyl]aminoquinazoline

34. 4-[2-(2-n-Butoxyphenoxy)ethyl]aminoquinazoline

35. 4-[2-(o-Phenylphenoxy)ethyl]aminoquinazoline

36. 4-[2-(p-Phenylphenoxy)ethyl]aminoquinazoline

37. 6-Chloro-4-[2-(o-phenylphenoxy)ethyl]aminoquinazoline

38. 4-[2-(2-Trifluoromethylphenoxy)ethyl]aminoquinazoline

39. 4-[2-(3-Chlorophenoxy)ethyl]aminoquinazoline

40. 6-Methyl-4-[2-(3-chlorophenoxy)ethyl]aminoquinazoline

41. 4-[2-(3-Methylphenoxy)ethyl]aminoquinazoline

42. 4-[2-(3-Methylphenylthio)ethyl]aminoquinazoline

43. 2-Chloro-4-[2-(3-methylphenoxy)ethyl]aminoquinazoline

44. 2-Chloro-4-[2-(3-methylphenylthio)ethyl]aminoquinazoline

45. 4-[2-(3-Trifluoromethylphenoxy)ethyl]aminoquinazoline

46. 4-[2-(4-Chlorophenoxy)ethyl]aminoquinazoline

47. 4-[2-(4-Chlorophenylthio)ethyl]aminoquinazoline

48. 4-[2-(4-Bromophenoxy)ethyl]aminoquinazoline

49. 4-[2-(4-Bromophenylthio)ethyl]aminoquinazoline

50. 4-[2-(4-Fluorophenoxy)ethyl]aminoquinazoline

51. 4-[2-(4-Methylphenoxy)ethyl]aminoquinazoline

52. 4-[2-(4-Methylphenylthio)ethyl]aminoquinazoline

53. 2-Chloro-4-[2-(4-methylphenoxy)ethyl]aminoquinazoline

54. 2-Chloro-4-[2-(4-Methylphenylthio)ethyl]aminoquinazoline

55. 6-Methyl-4-[2-(4-methylphenoxy)ethyl]aminoquinazoline

56. 4-[2-(4-tert-Butylphenoxy)ethyl]aminoquinazoline

57. 4-[2-(4-Methoxyphenoxy)ethyl]aminoquinazoline

58. 4-[2-(4-Isopropoxyphenoxy)ethyl]aminoquinazoline

59. 4-[2-(2,4-Dichlorophenoxy)ethyl]aminoquinazoline

60. 4-[2-(2,4-Dibromophenoxy)ethyl]aminoquinazoline

61. 6-Chloro-4-[2-(2,4-dichlorophenoxy)ethyl]aminoquinazoline

62. 4-[2-(2-Methyl-4-chlorophenoxy)ethyl]aminoquinazoline

63. 2-Chloro-4-[2-(2-methyl-4-chlorophenoxy)ethyl]aminoquinazoline

64. 4-[2-(2,4-Dimethylphenoxy)ethyl]aminoquinazoline

65. 4-[2-(2-Chloro-4-methoxyphenoxy)ethyl]aminoquinazoline

66. 4-[2-(2-Bromo-4-isopropylphenoxy)ethyl]aminoquinazoline

67. 6-Chloro-4-[2-(2,5-dimethylphenoxy)ethyl]aminoquinazoline

68. 4-[2-(2,6-Dimethylphenoxy)ethyl]aminoquinazoline

69. 4-[2-(2,6-Diethylphenoxy)ethyl]aminoquinazoline

70. 2-Chloro-4-[2-(2,6-dimethylphenoxy)ethyl]aminoquinazoline

71. 4-[2-(3-Methyl-4-methylthiophenoxy)ethyl]aminoquinazoline

72. 6-Bromo-[2-(3-methyl-4-n-butylthiophenylthio)ethyl]aminoquinazoline

73. 4-[2-(3,5-Dimethylphenoxy)ethyl]aminoquinazoline

74. 2-Chloro-4-[2-(3,5-dimethylphenoxy)ethyl]aminoquinazoline

75. 6-Chloro-4-[2-(3,5-dimethylphenoxy)ethyl]aminoquinazoline

76. 4-[2-(2,4,5-Trichlorophenoxy)ethyl]aminoquinazoline

77. 4-[2-(2,4,6-Tribromophenoxy)ethyl]aminoquinazoline

78. 6-Chloro-4-[2-(2,4,5-trichlorophenoxy)ethyl]aminoquinazoline

79. 4-[2-(2,4,6-Trichlorophenoxy)ethyl]aminoquinazoline

80. 4-[2-(2,4,6-Triiodophenoxy)ethyl]aminoquinazoline

81. 6-Chloro-4-[2-(2,4,6-trichlorophenoxy)ethyl]aminoquinazoline

82. 4-[2-(2,3,6-Trimethylphenoxy)ethyl]aminoquinazoline

83. 6-Bromo-4-[2-(2,6-dichloro-4-bromophenoxy)ethyl]aminoquinazoline

84. 4-[2-(1-Naphthoxy)ethyl]aminoquinazoline

85. 6-Chloro-4-[2-(1-naphthoxy)ethyl]aminoquinazoline

86. 4-[2-(Benzyloxy)ethyl]aminoquinazoline

87. 4-[2-Benzylthio)ethyl]aminoquinazoline

88. 2-Chloro-4-[2-(benzylthio)ethyl]aminoquinazoline

89. 4-[2-(Phenethyloxy)ethyl]aminoquinazoline

90. 4-[2-(.alpha.-Methylbenzyloxy)ethyl]aminoquinazoline

91. 4-(3-Methoxypropyl)aminoquinazoline

92. 4-(3-Ethoxypropyl)aminoquinazoline

93. 2-Chloro-4-(3-ethoxypropyl)aminoquinazoline

94. 6-Nitro-4-(3-ethoxypropyl)aminoquinazoline

95. 4-(3-Isopropoxypropyl)aminoquinazoline

96. 4-(3-n-Butoxypropyl)aminoquinazoline

97. 2-Chloro-4-(3-n-butoxypropyl)aminoquinazoline

98. 4-[3-(2-Ethylhexyloxy)propyl]aminoquinazoline

99. 6-Nitro-4-[3-(2-ethylhexyloxy)propyl]aminoquinazoline

100. 4-(3-Dodecyloxypropyl)aminoquinazoline

101. 6-Iodo-4-(3-stearyloxypropyl)aminoquinazoline

102. 4-(3-Phenoxypropyl)aminoquinazoline

103. 4-(3-Phenylthiopropyl)aminoquinazoline

104. 2-Chloro-4-(3-phenoxypropyl)aminoquinazoline

105. 2-Chloro-4-(3-phenylthiopropyl)aminoquinazoline

106. 6-Methyl-4-(3-phenoxypropyl)aminoquinazoline

107. 6-Methyl-4-(3-phenylthiopropyl)aminoquinazoline

108. 6-Nitro-4-(3-phenoxypropyl)aminoquinazoline

109. 4-[3-(2-Chlorophenoxy)propyl]aminoquinazoline

110. 4-[3-(2-Methylphenoxy)propyl]aminoquinazoline

111. 4-[3-(2-Methylphenylthio)propyl]aminoquinazoline

112. 4-[3-(2-Methoxyphenoxy)propyl]aminoquinazoline

113. 4-[3-(3-Chlorophenoxy)propyl]aminoquinazoline

114. 4-[3-(3-Methylphenoxy)propyl]aminoquinazoline

115. 4-[3-(3-Methylphenylthio)propyl]aminoquinazoline

116. 2-Chloro-4-[3-(3-methylphenoxy)propyl]aminoquinazoline

117. 2-Chloro-4-[3-(3-methylphenylthio)propyl]aminoquinazoline

118. 4-[3-(4-Chlorophenoxy)propyl]aminoquinazoline

119. 2-Chloro-4-[3-(4-chlorophenoxy)propyl]aminoquinazoline

120. 4-[3-(4-Methylphenoxy)propyl]aminoquinazoline

121. 4-[3-(4-Methylphenylthio)propyl]aminoquinazoline

122. 2-Chloro-4-[3-(4-methylphenylthio)propyl]aminoquinazoline

123. 6-Iodo-4-[3-(4-tert-butylphenoxy)propyl]aminoquinazoline

124. 4-[3-(4-methoxyphenoxy)propyl]aminoquinazoline

125. 4-[3-(2,5-Dimethylphenoxy)propyl]aminoquinazoline

126. 4-[3-(2-Methyl-4-chlorophenoxy)propyl]aminoquinazoline

127. 4-[3-(2-Chloro-4-methoxyphenoxy)propyl]aminoquinazoline

128. 4-[3-(3-Methyl-4-chlorophenoxy)propyl]aminoquinazoline

129. 4-[3-(3,5-Dimethylphenoxy)propyl]aminoquinazoline

130. 6-Chloro-4-[3-(2,4,6-trimethylphenoxy)propyl]aminoquinazoline

131. 4-[3-(1-Naphthoxy)propyl]aminoquinazoline

132. 2-Chloro-4-[3-(2-naphthylthio)propyl]aminoquinazoline

133. 4-(1-Methyl-2-methoxyethyl)aminoquinazoline

134. 4-(1-Methyl-2-octyloxyethyl)aminoquinazoline

135. 4-(1-Methyl-2-phenoxyethyl)aminoquinazoline

136. 2-Chloro-4-(1-methyl-2-phenoxyethyl)aminoquinazoline

137. 6-Methyl-4-(1-methyl-2-phenoxyethyl)aminoquinazoline

138. 6-Bromo-4-(1-methyl-2-phenylthioethyl)aminoquinazoline

139. 4-[1-Methyl-2-(2-methylphenoxy)ethyl]aminoquinazoline

140. 4-[1-Methyl-2-(2-methoxyphenoxy)ethyl]aminoquinazoline

141. 4-[1-Methyl-2-(3-chlorophenoxy)ethyl]aminoquinazoline

142. 4-[1-Methyl-2-(3-methylphenoxy)ethyl]aminoquinazoline

143. 4-[1-Methyl-2-(3-isopropylphenylthio)ethyl]aminoquinazoline

144. 4-[1-Methyl-2-(4-chlorophenoxy)ethyl]aminoquinazoline

145. 2-Chloro-4-[1-methyl-2-(4-chlorophenoxy)ethyl]aminoquinazoline

146. 6-Bromo-4-[1-methyl-2-(4-iodophenylthio)ethyl]aminoquinazoline

147. 4-[1-Methyl-2-(4-methylphenoxy)ethyl]aminoquinazoline

148. 2-Chloro-4-[1-methyl-2-(4-methylphenoxy)ethyl]aminoquinazoline

149. 4-[1-Methyl-2-(4-n-butoxyphenoxy)ethyl]aminoquinazoline

150. 4-[1-Methyl-2-(4-phenylphenoxy)ethyl]aminoquinazoline

151. 4-(2-Methyl-2-phenoxyethyl)aminoquinazoline

152. 2-Chloro-4-(2-methyl-2-phenoxyethyl)aminoquinazoline

153. 4-[2-Methyl-2-(2-chlorophenoxy)ethyl]aminoquinazoline

154. 4-[2-Methyl-2-(2-methylphenoxy)ethyl]aminoquinazoline

155. 2-Chloro-4-[2-methyl-2-(2-methylphenoxy)ethyl]aminoquinazoline

156. 6-Chloro-4-[2-methyl-2-(2-tert-butylphenoxy)ethyl]aminoquinazoline

157. 4-[2-Methyl-2-(2-methoxyphenoxy)ethyl]aminoquinazoline

158. 4-[2-Methyl-2-(3-chlorophenoxy)ethyl]aminoquinazoline

159. 4-[2-Methyl-2-(3-methylphenoxy)ethyl]aminoquinazoline

160. 4-[2-Methyl-2-(4-chlorophenoxy)ethyl]aminoquinazoline

161. 4-[2-Methyl-2-(4-bromophenoxy)ethyl]aminoquinazoline

162. 2-Chloro-4-[2-methyl-2-(4-chlorophenoxy)ethyl]aminoquinazoline

163. 4-[2-Methyl-2-(4-methylphenoxy)ethyl]aminoquinazoline

164. 2-Chloro-4-[2-methyl-2-(4-methylphenoxy)ethyl]aminoquinazoline

165. 4-[2-Methyl-2-(4-phenylphenoxy)ethyl]aminoquinazoline

166. 6-Methyl-4-[2-methyl-2-(4-n-butylthiophenoxy)ethyl]aminoquinazoline

167. 4-(4-Ethoxybutyl)aminoquinazoline

168. 4-(4-Dodecylthiobutyl)aminoquinazoline

169. 4-(4-Benzyloxybutyl)aminoquinazoline

170. 4-(4-Phenoxybutyl)aminoquinazoline

171. 6-Methyl-4-(4-phenoxybutyl)aminoquinazoline

172. 4-[4-(2-Chlorophenoxy)butyl]aminoquinazoline

173. 4-[4-(2-Methylphenoxy)butyl]aminoquinazoline

174. 4-[4-(2-Methoxyphenoxy)butyl]aminoquinazoline

175. 4-[4-(3-Methylphenoxy)butyl]aminoquinazoline

176. 4-[4-(3-Chlorophenoxy)butyl]aminoquinazoline

177. 6-Bromo-4-[4-(3-bromophenylthio)butyl]aminoquinazoline

178. 4-[4-(3-Phenylphenoxy)butyl]aminoquinazoline

179. 4-[4-(4-Methylphenoxy)butyl]aminoquinazoline

180. 4-[4-(4-Isopropylphenoxy)butyl]aminoquinazoline

181. 4-[4-(4-Methylthiophenylthio)butyl]aminoquinazoline

182. 4-(2-Ethyl-2-benzyloxyethyl)aminoquinazoline

183. 4-(2-Ethyl-2-phenoxyethyl)aminoquinazoline

184. 4-[2-Ethyl-2-(2-methoxyphenoxy)ethyl]aminoquinazoline

185. 2-Chloro-4-[2-ethyl-2-(4-chlorophenoxy)ethyl]aminoquinazoline

186. 4-(1-Ethyl-2-methoxyethyl)aminoquinazoline

187. 6-Bromo-4-(1-ethyl-2-benzyloxyethyl)aminoquinazoline

188. 2-Chloro-4-(1-ethyl-2-phenoxyethyl)aminoquinazoline

189. 4-[1-Ethyl-2-(2-chlorophenoxy)ethyl]aminoquinazoline

190. 4-[1-Ethyl-2-(3-methylphenoxy)ethyl]aminoquinazoline

191. 4-[1-Ethyl-2-(4-isopropoxyphenylthio)ethyl]aminoquinazoline

192. 4-(2,2-Dimethyl-2-ethoxyethyl)aminoquinazoline

193. 2-Chloro-4-(2,2-dimethyl-2-octyloxyethyl)aminoquinazoline

194. 6-Methyl-4-(2,2-dimethyl-2-benzylthioethyl)aminoquinazoline

195. 4-(2,2-Dimethyl-2-phenoxyethyl)aminoquinazoline

196. 2-Chloro-4-(2,2-dimethyl-2-phenoxyethyl)aminoquinazoline

197. 4-[2,2-Dimethyl-2-(2-chlorophenoxy)ethyl]aminoquinazoline

198. 4-[2,2-Dimethyl-2-(2-methylphenoxy)ethyl]aminoquinazoline

199. 2-Chloro-4-[2,2-dimethyl-2-(2-methylphenoxy)ethyl]aminoquinazoline

200. 4-[2,2-Dimethyl-2-(2-methoxyphenoxy)ethyl]aminoquinazoline

201. 4-[2,2-Dimethyl-2-(3-chlorophenoxy)ethyl]aminoquinazoline

202. 4-[2,2-Dimethyl-2-(3-methylphenoxy)ethyl]aminoquinazoline

203. 2-Chloro-4-[2,2-dimethyl-2-(3-methylphenoxy)ethyl]aminoquinazoline

204. 4-[2,2-Dimethyl-2-(4-chlorophenoxy)ethyl]aminoquinazoline

205. 4-[2,2-Dimethyl-2-(4-bromophenoxy)ethyl]aminoquinazoline

206. 4-[2,2-Dimethyl-2-(4-methylphenoxy)ethyl]aminoquinazoline

207. 4-[2,2-Dimethyl-2-(4-isopropylphenylthio)ethyl]aminoquinazoline

208. 2-Chloro-4-[2,2-dimethyl-2-(4-methylphenoxy)ethyl]aminoquinazoline

209. 4-(1,1-Dimethyl-2-phenoxyethyl)aminoquinazoline

210. 4-[1,1-Dimethyl-2-(2-methylphenoxy)ethyl]aminoquinazoline

211. 4-[1,1-Dimethyl-2-(3-methoxyphenoxy)ethyl]aminoquinazoline

212. 4-(1,2-Dimethyl-2-dodecyloxyethyl)aminoquinazoline

213. 4-(1,2-Dimethyl-2-phenoxyethyl)aminoquinazoline

214. 4-[1,2-Dimethyl-2-(2-chlorophenoxy)ethyl]aminoquinazoline

215. 4-[1,2-Dimethyl-2-(3-methylphenoxy)ethyl]aminoquinazoline

216. 2-Chloro-4-[1,2-dimethyl-2-(4-methoxyphenylthio)ethyl]aminoquinazoline

217. 4-(5-n-Butoxypentyl)aminoquinazoline

218. 4-(5-Octoxypentyl)aminoquinazoline

219. 4-[5-(2-Ethylhexyloxy)pentyl]aminoquinazoline

220. 4-(5-Stearyloxypentyl)aminoquinazoline

221. 4-(5-Benzylthiopentyl)aminoquinazoline

222. 4-(5-Phenoxypentyl)aminoquinazoline

223. 4-[5-(2-Chlorophenoxy)pentyl]aminoquinazoline

224. 2-Chloro-4-[5-(2-chlorophenoxy)pentyl]aminoquinazoline

225. 4-[5-(2-Methylphenoxy)pentyl]aminoquinazoline

226. 4-[5-(2-Methoxyphenoxy)pentyl]aminoquinazoline

227. 2-Chloro-4-[5-(2-methoxyphenylthio)pentyl]aminoquinazoline

228. 4-[5-(3-Chlorophenoxy)pentyl]aminoquinazoline

229. 4-[5-(3-Methylphenoxy)pentyl]aminoquinazoline

230. 4-[5-(3-Methoxyphenoxy)pentyl]aminoquinazoline

231. 4-[5-(4-Chlorophenoxy)pentyl]aminoquinazoline

232. 4-[5-(4-Methylphenoxy)pentyl]aminoquinazoline

233. 4-[5-(4-Methoxyphenoxy)pentyl]aminoquinazoline

234. 4-(6-Phenoxyhexyl)aminoquinazoline

235. 4-[6-(2-Chlorophenoxy)hexyl]aminoquinazoline

236. 4-[6-(2-Methylphenoxy)hexyl]aminoquinazoline

237. 6-Chloro-4-[6-(2-methylphenoxy)hexyl]aminoquinazoline

238. 4-[6-(3-Chlorophenoxy)hexyl]aminoquinazoline

239. 4-[6-(3-Methylphenoxy)hexyl]aminoquinazoline

240. 4-[6-(3-Methoxyphenoxy)hexyl]aminoquinazoline

241. 4-[6-(4-Chlorophenoxy)hexyl]aminoquinazoline

242. 4-[6-(4-Chlorophenylthio)hexyl]aminoquinazoline

243. 4-[6-(4-Methylphenoxy)hexyl]aminoquinazoline

244. 4-[6-(4-Methoxyphenoxy)hexyl]aminoquinazoline

245. 2-Chloro-4-[6-(4-methoxyphenoxy)hexyl]aminoquinazoline

246. 4-(7-Isopropoxyheptyl)aminoquinazoline

247. 4-(7-Dodecylthioheptyl)aminoquinazoline

248. 4-(7-Phenoxyheptyl)aminoquinazoline

249. 4-[7-(2-Chlorophenoxy)heptyl]aminoquinazoline

250. 4-[7-(2-Methylphenoxy)heptyl]aminoquinazoline

251. 4-[7-(2-Methoxyphenoxy)heptyl]aminoquinazoline

252. 4-[7-(3-Chlorophenoxy)heptyl]aminoquinazoline

253. 4-[7-(3-Methylphenoxy)heptyl]aminoquinazoline

254. 4-[7-(4-Chlorophenoxy)heptyl]aminoquinazoline

255. 4-[7-(4-Methylphenoxy)heptyl]aminoquinazoline

256. 4-[7-(4-Methoxyphenoxy)heptyl]aminoquinazoline

257. 4-[7-(2,4-Dichlorophenoxy)heptyl]aminoquinazoline

258. 4-[7-(3,5-Dimethylphenoxy)heptyl]aminoquinazoline

259. 4-(8-Methoxyoctyl)aminoquinazoline

260. 4-(8-Benzylthiooctyl)aminoquinazoline

261. 4-(8-Phenoxyoctyl)aminoquinazoline

262. 4-[8-(2-Chlorophenoxy)octyl]aminoquinazoline

263. 4-[8-(2-Methylphenoxy)octyl]aminoquinazoline

264. 4-[8-(2-Methoxyphenoxy)octyl]aminoquinazoline

265. 4-[8-(3-Chlorophenoxy)octyl]aminoquinazoline

266. 4-[8-(3-Methylphenyl)octyl]aminoquinazoline

267. 4-[8-(3-Methoxyphenyl)octyl]aminoquinazoline

268. 4-[8-(4-Chlorophenoxy)octyl]aminoquinazoline

269. 4-[8-(4-Methylphenoxy)octyl]aminoquinazoline

270. 4-[8-(4-Methylthiophenoxy)octyl]aminoquinazoline

271. 4-[8-(4-Methoxyphenoxy)octyl]aminoquinazoline

272. 4-[8-(3,5-Dichlorophenoxy)octyl]aminoquinazoline

273. 4-[8-(2,6-Dimethylphenoxy)octyl]aminoquinazoline

274. 4-(10-Methoxydecyl)aminoquinazoline

275. 4-(10-Phenoxydecyl)aminoquinazoline

276. 4-[10-(2-Chlorophenoxy)decyl]aminoquinazoline

277. 4-[10-(3-Methylphenoxy)decyl]aminoquinazoline

278. 4-[10-(4-Methoxyphenoxy)decyl]aminoquinazoline

279. 4-(12-Phenoxydodecyl)aminoquinazoline

280. 4-[12-(2-Methylphenoxy)dodecyl]aminoquinazoline

281. 4-[12-(3-Chlorophenoxy)dodecyl]aminoquinazoline

282. 4-[12-(4-Methoxyphenoxy)dodecyl]aminoquinazoline

283. 4-(16-Phenoxyhexadecyl)aminoquinazoline

284. 4-(18-Phenoxyoctadecyl)aminoquinazoline

285. 4-[2-(2-n-Propylphenoxy)ethyl]aminoquinazoline

286. 6-Methyl-4-[4-(2-chlorophenoxy)butyl]aminoquinazoline

287. 4-[2-(2-Methoxy-4-methylphenoxy)ethyl]aminoquinazoline

288. 4-[2-(3-Methoxyphenoxy)ethyl]aminoquinazoline

289. 4-[2-(2-Methoxy-4-chlorophenoxy)ethyl]aminoquinazoline

290. 4-[2-(2-Methyl-3-chlorophenoxy)ethyl]aminoquinazoline

291. 2-Methyl-4-(3-phenoxypropyl)aminoquinazoline

292. 4-[2-(2,5-Dimethoxyphenoxy)ethyl]aminoquinazoline

293. 4-[2-(3,5-Dimethyl-4-bromophenoxy)ethyl]aminoquinazoline

294. 4-[2-(2,4-Dichloro-6-methylphenoxy)ethyl]aminoquinazoline

295. 4-[2-(2-Trifluoromethyl-4-chlorophenoxy)ethyl]aminoquinazoline

296. 4-[2-(2-n-Butylphenoxy)ethyl]aminoquinazoline

297. 4-[2-(2-tert-Butylphenoxy)ethyl]aminoquinazoline

The compounds of formula (I) may readily be prepared, for example, by the following methods which can be performed under per se known conditions: ##STR2## (In the above formulae, A, B, X, Y and Z are as defined above).

The reaction is preferably carried out in the presence of a solvent and a base.

The nature of the solvent is not critical, provided that it has no adverse effect upon the reaction. Examples of suitable solvents include: Chlorinated or non-chlorinated aromatic, aliphatic or alicyclic hydrocarbons, such as benzene, toluene, xylene, methylnaphthalene, petroleum ether, ligroin, hexane, chlorobenzene, dichlorobenzene, methylene chloride, chloroform, dichloroethane, trichloroethylene and cyclohexane; ethers, such as diethyl ether, ethylene glycol dimethyl ether, tetrahydrofuran and dioxane; ketones, such as acetone and methyl ethyl ketone; alcohols, such as methanol, ethanol and ethylene glycol as well as mixtures thereof with water; and mixtures of the above-mentioned solvents.

Examples of bases include: organic bases, such as triethylamine, pyridine and N,N-diethylaniline; inorganic bases such as sodium hydroxide, potassium hydroxide, sodium carbonate and potassium carbonate.

The reaction temperature is not critical and it ranges usually from ambient to a temperature at which the solvent used refluxes. It is preferable that the reaction is performed with heating in order to shorten the reaction period.

After completion of the reaction, the desired compound may optionally be purified by conventional methods such as recrystallization or chromatography.

Acid addition salts may readily be prepared by introducing an acid into the reaction mixture and then by evaporating the solvent.

Similarly, hydrates may usually be obtained by recrystallizing the desired compound from a solvent containing water.

Preparation of the active ingredient compound of the invention is illustrated by the following Examples:

To a solution of 2.0 g (0.01 mol) of 4,6-dichloroquinazoline in 50 ml of benzene were added 1.0 g (0.01 mol) of triethylamine and 1.7 g (0.01 mol) of 2-(2-chlorophenoxy) ethylamine, and the mixture was refluxed, with stirring, for 3 hours.

After completion of the reaction, the benzene was removed from the reaction mixture by evaporation under reduced pressure, and the crystals which were separated were washed with water and collected by filtration. Recrystallization of the crystals from ethanol gave 2.7 g of 6-chloro-4-[2-(2-chlorophenoxy)ethyl]aminoquinazoline in the form of colorless plates.

m.p. 176.degree..about.178.degree. C.

Elementary analysis (%): Calcd: C, 57.62; H, 3.78; N, 12.69. Found: C, 57.50; H, 3.92; N, 12.57.

To a solution of 1.8 g (0.01 mol) of 4-chloro-6-methylquinazoline in 50 ml of benzene were added 1.0 g (0.01 mol) of triethylamine and 1.7 g (0.01 mol) of 2-(O-methoxyphenoxy)ethylamine, and the mixture was heated, with stirring, at 60.degree..about.70.degree. C. for 5 hours. After completion of the reaction, the benzene was evaporated under reduced pressure and the residue was dissolved in chloroform, washed with water and dried over anhydrous sodium sulfate. The chloroform was evaporated under reduced pressure to leave crystals, which were recrystallized from ethanol, giving 0.9 g of 6-methyl-4-[2-(2-methoxyphenoxy)ethyl]-aminoquinazoline in the form of colorless plates.

m.p. 167.degree..about.169.degree. C.

Elementary analysis (%): Calcd: C, 69.88; H, 6.19; N, 13.58 Found: C, 69.86; H, 6.15; N, 13.60

To a solution of 2.5 g (0.015 mol) of 4-chloroquinazoline in 50 ml of benzene were added 1.5 g (0.015 mol) of triethylamine and 3.5 g (0.015 mol) of 2-(p-bromophenylthio) ethylamine, and the mixture was heated, with stirring, at 70.degree..about.80.degree. C. for 3 hours. After completion of the reaction, the benzene was evaporated under reduced pressure and the resulting crystals were washed with water, collected by filtration and recrystallized from ethanol, giving 3.0 g of 4-[2-(4-bromophenylthio)ethyl]aminoquinazoline in the form of colorless granules.

m.p. 161.degree..about.163.degree. C.

Elementary analysis (%): Calcd: C, 52.95; H, 3.85; N, 11.41. Found: C, 53.34; H, 3.92; N, 11.66.

To a solution of 3.3 g (0.02 mol) of 4-chloroquinazoline in 50 ml of benzene were added 2.0 g (0.02 mol) of triethylamine and 3.0 g (0.02 mol) of 2-benzyloxyethylamine, and the mixture was heated, with stirring, at 60.degree..about.70.degree. C. for 5 hours. After completion of the reaction, the benzene was evaporated under reduced pressure, and the resulting crystals were washed with water, collected by filtration, dried and recrystallized from benzene/n-hexane, affording 3.7 g of 4-[2-(benzyloxy)ethyl]aminoquinazoline in the form of colorless needles.

m.p. 111.degree..about.113.degree. C.

Elementary analysis (%): Calcd: C, 73.09; H, 6.14; N, 15.04. Found: C, 72.98; H, 6.11; N, 14.69.

To a solution of 2.5 g (0.015 mol) of 4-chloroquinazoline in 50 ml of benzene were added 1.5 g (0.015 mol) of triethylamine and 2.3 g (0.015 mol) of 3-phenoxypropylamine, and the mixture was refluxed for 3 hours.

After completion of the reaction, the benzene was evaporated under reduced pressure and the residue was washed with water, collected by filtration to give crystals. The crystals were recrystallized from 70% ethanol, giving 1.5 g of 4-(3-phenoxypropyl)aminoquinazoline in the form of colorless flakes.

m.p. 129.degree..about.131.degree. C.

Elementary analysis (%): Calcd: C, 73.09; H. 6.14; N, 15.04. Found: C, 72.69; H, 6.24; N, 14.66.

To a solution of 1.7 g (0.008 mol) of 4-chloro-5-nitroquinazoline in 50 ml of benzene were added 0.8 g (0.008 mol) of triethylamine and 1.2 g (0.008 mol) of 3-phenoxypropylamine, and the mixture was refluxed for 3 hours on an oil bath. After cooling, crystals separated were collected by filtration, washed with water and recrystallized from aqueous ethanol, affording 6-nitro-4-(3-phenoxypropyl)aminoquinazoline as the monohydrate in the form of yellow needles.

m.p. 121.degree..about.123.degree. C.

Elementary analysis (%): Calcd: C, 60.38; H, 5.19; N, 16.44. Found: C, 59.65; H, 5.26; N, 16.37.

To a solution of 2.0 g (0.01 mol) of 2,4-dichloroquinazoline in 50 ml of benzene were added 1.0 g (0.01 mol) of triethylamine and 1.8 g (0.01 mol) of 2,2-dimethyl-2-(4-methylphenoxy)-ethylamine and the mixture was stirred at an ambient temperature for 4 hours. After completion of the reaction, the benzene was evaporated under reduced pressure, and the residue was dissolved in chloroform, washed with water and dried over anhydrous sodium sulfate. The chloroform was removed by evaporation under reduced pressure to leave crystals, which were recrystallized from benzene/hexane, affording 2.3 g of 2-chloro-4-[2,2-dimethyl-2-(4-methylphenoxy)ethyl]-aminoquinazoline in the form of a colorless fine powder.

m.p. 121.degree..about.124.degree. C.

Elementary analysis (%): Calcd: C, 66.76; H, 5.90; N, 12.29. Found: C, 66.52; H, 6.04; N, 11.93.

To a solution of 1.7 g (0.01 mol) of 4-chloroquinazoline in 50 ml of benzene were added 1.0 g (0.01 mol) of triethylamine and 1.8 g (0.01 mol) of 5-phenoxypentylamine, and the mixture was refluxed for 3 hours. After completion of the reaction, the benzene was evaporated under reduced pressure to leave crystals, which were washed with water, collected by filtration and recrystallized from aqueous ethanol, giving 0.6 g of 4-(5-phenoxypentyl)aminoquinazoline in the form of colorless flakes.

m.p. 106.degree..about.108.degree. C.

Elementary analysis (%): Calcd: C, 74.26; H, 6.84; N, 13.68. Found: C, 74.95; H, 6.89; N, 13.75.

2.5 g of the 4-(5-phenoxypentyl)aminoquinazoline obtained according to the process were dissolved in 100 ml of ethanol, and 2 g of 36% hydrochloric acid were added. The ethanol was removed by evaporation under reduced pressure and the resulting residue was dried, recrystallized from aqueous ethanol, giving 4-(5-phenoxypentyl)aminoquinazoline in the form of the hydrochloride melting at 183.degree..about.186.degree. C.

Following the methods described in Preparations 1 to 8, the following compounds were obtained:

4-(2-Methoxyethyl)aminoquinazoline

m.p. 127.degree..about.128.degree. C.

4-(2-Ethoxyethyl)aminoquinazoline

m.p. 112.degree..about.113.degree. C.

4-(2-Ethylthioethyl)aminoquinazoline

m.p. 116.degree..about.118.degree. C.

2-Chloro-4-(2-ethoxyethyl)aminoquinazoline

m.p. 93.degree..about.95.degree. C.

2-Chloro-4-(2-ethylthioethyl)aminoquinazoline

m.p. 119.degree..about.121.degree. C.

6-Chloro-4-(2-ethoxyethyl)aminoquinazoline

m.p. 125.degree..about.127.degree. C.

4-(2-n-Propylthioethyl)aminoquinazoline

m.p. 95.degree..about.98.degree. C.

4-(2-Phenoxyethyl)aminoquinazoline

m.p. 183.degree..about.185.degree. C.

4-(2-Phenylthioethyl)aminoquinazoline

m.p. 137.degree..about.139.degree. C.

2-Chloro-4-(2-phenoxyethyl)aminoquinazoline

m.p. 172.degree..about.174.degree. C.

2-Chloro-4-(2-phenylthioethyl)aminoquinazoline

m.p. 210.degree..about.212.degree. C.

6-Chloro-4-(2-phenoxyethyl)aminoquinazoline

m.p. 155.degree..about.158.degree. C.

6-Methyl-4-(2-phenoxyethyl)aminoquinazoline

m.p. 138.degree..about.140.degree. C.

4-[2-(2-Chlorophenoxy)ethyl]aminoquinazoline

m.p. 161.degree..about.163.degree. C.

4-[2-(2-Bromophenoxy)ethyl]aminoquinazoline

m.p. 164.degree..about.166.degree. C.

4-[2-(2-Iodophenoxy)ethyl]aminoquinazoline

m.p. 161.degree..about.163.degree. C.

4-[2-(2-Fluorophenoxy)ethyl]aminoquinazoline

m.p. 164.degree..about.166.degree. C.

2-Chloro-4-[2-(2-chlorophenoxy)ethyl]aminoquinazoline

m.p. 169.degree..about.171.degree. C.

4-[2-(2-Methoxyphenoxy)ethyl]aminoquinazoline

m.p. 138.degree..about.140.degree. C.

4-[2-(2-Methylphenylthio)ethyl]aminoquinazoline

m.p. 149.degree..about.151.degree. C.

2-Chloro-4-[2-(2-methylphenoxy)ethyl]aminoquinazoline

m.p. 176.degree..about.178.degree. C.

6-Chloro-4-[2-(2-methylphenoxy)ethyl]aminoquinazoline

m.p. 168.degree..about.171.degree. C.

6-Methyl-4-[2-(2-methylphenoxy)ethyl]aminoquinazoline

m.p. 161.degree..about.164.degree. C.

2-Chloro-4-[2-(2-methylphenylthio)ethyl]aminoquinazoline

m.p. 194.degree..about.196.degree. C.

4-[2-(2-Ethylphenoxy)ethyl]aminoquinazoline

m.p. 134.degree..about.135.degree. C.

4-[2-(2-Isopropylphenoxy)ethyl]aminoquinazoline

m.p. 132.degree..about.134.degree. C.

4-[2-(2-sec-Butylphenoxy)ethyl]aminoquinazoline

m.p. 128.degree..about.130.degree. C.

4-[2-(2-Methoxyphenoxy)ethyl]aminoquinazoline

m.p. 148.degree..about.152.degree. C.

4-[2-(2-Ethoxyphenoxy)ethyl]aminoquinazoline.monohydrate

m.p. 111.degree..about.113.degree. C.

6-Chloro-4-[2-(2-ethoxyphenoxy)ethyl]aminoquinazoline.monohydrate

m.p. 154.degree..about.156.degree. C.

4-[2-(2-Phenylphenoxy)ethyl]aminoquinazoline

m.p. 137.degree..about.140.degree. C.

4-[2-(3-Chlorophenoxy)ethyl]aminoquinazoline

m.p. 193.degree..about.195.degree. C.

6-Methyl-4-[2-(3-chlorophenoxy)ethyl]aminoquinazoline

m.p. 150.degree..about.152.degree. C.

4-[2-(3-Methylphenoxy)ethyl]aminoquinazoline

m.p. 184.degree..about.186.degree. C.

4-[2-(3-Methylphenylthio)ethyl]aminoquinazoline

m.p. 131.degree..about.133.degree. C.

2-Chloro-4-[2-(3-methylphenoxy)ethyl]aminoquinazoline

m.p. 162.degree..about.164.degree. C.

2-Chloro-4-[2-(3-methylphenylthio)ethyl]aminoquinazoline

m.p. 154.degree..about.156.degree. C.

4-[2-(3-Trifluoromethylphenoxy)ethyl]aminoquinazoline

m.p. 161.degree..about.163.degree. C.

4-[2-(4-Chlorophenoxy)ethyl]aminoquinazoline

m.p. 191.degree..about.193.degree. C.

4-[2-(4-Chlorophenylthio)ethyl]aminoquinazoline

m.p. 147.degree..about.149.degree. C.

4-[2-(4-Bromophenoxy)ethyl]aminoquinazoline

m.p. 161.degree..about.163.degree. C.

4-[2-(4-Fluorophenoxy)ethyl]aminoquinazoline

m.p. 189.degree..about.190.degree. C.

4-[2-(4-Methylphenoxy)ethyl]aminoquinazoline

m.p. 153.degree..about.155.degree. C.

4-[2-(4-Methylphenylthio)ethyl]aminoquinazoline

m.p. 134.degree..about.136.degree. C.

2-Chloro-4-[2-(4-methylphenoxy)ethyl]aminoquinazoline

m.p. 161.degree..about.163.degree. C.

2-Chloro-4-[2-(4-methylphenylthio)ethyl]aminoquinazoline

m.p. 160.degree..about.165.degree. C.

6-Methyl-4-[2-(4-methylphenoxy)ethyl]aminoquinazoline

m.p. 143.degree..about.145.degree. C.

4-[2-(4-tert-Butylphenoxy)ethyl]aminoquinazoline

m.p. 138.degree..about.143.degree. C.

4-[2-(4-Methoxyphenoxy)ethyl]aminoquinazoline

m.p. 142.degree..about.144.degree. C.

4-[2-(2,4-Dichlorophenoxy)ethyl]aminoquinazoline

m.p. 170.degree..about.172.degree. C.

4-[2-(2,4-Dibromophenoxy)ethyl]aminoquinazoline

m.p. 161.degree..about.163.degree. C.

6-Chloro-4-[2-(2,4-dichlorophenoxy)ethyl]aminoquinazoline

m.p. 187.degree..about.188.degree. C.

4-[2-(2-Methyl-4-chlorophenoxy)ethyl]aminoquinazoline

m.p. 164.degree..about.166.degree. C.

2-Chloro-4-[2-(2-methyl-4-chlorophenoxy)ethyl]aminoquinazoline

m.p. 179.degree..about.181.degree. C.

4-[2-(2,4-Dimethylphenoxy)ethyl]aminoquinazoline

m.p. 164.degree..about.167.degree. C.

4-[2-(2-Chloro-4-methoxyphenoxy)ethyl]aminoquinazoline

m.p. 124.degree..about.126.degree. C.

6-Chloro-4-[2-(2,5-dimethylphenoxy)ethyl]aminoquinazoline

m.p. 164.degree..about.167.degree. C.

4-[2-(2,6-Dimethylphenoxy)ethyl]aminoquinazoline

m.p. 132.degree..about.134.degree. C.

2-Chloro-4-[2-(2,6-dimethylphenoxy)ethyl]aminoquinazoline

m.p. 169.degree..about.171.degree. C.

4-[2-(3-Methyl-4-methylthiophenoxy)ethyl]aminoquinazoline

m.p. 171.degree..about.173.degree. C.

4-[2-(3,5-Dimethylphenoxy)ethyl]aminoquinazoline

m.p. 183.degree..about.185.degree. C.

2-Chloro-4-[2-(3,5-dimethylphenoxy)ethyl]aminoquinazoline

m.p. 186.degree..about.188.degree. C.

6-Chloro-4-[2-(3,5-dimethylphenoxy)ethyl]aminoquinazoline

m.p. 209.degree..about.211.degree. C.

4-[2-(2,4,5-Trichlorophenoxy)ethyl]aminoquinazoline

m.p. 176.degree..about.178.degree. C.

6-Chloro-4-[2-(2,4,5-trichlorophenoxy)ethyl]aminoquinazoline

m.p. 198.degree..about.202.degree. C.

4-[2-(2,4,6-Trichlorophenoxy)ethyl]aminoquinazoline

m.p. 170.degree..about.172.degree. C.

4-[2-(2,4,6-Triiodophenoxy)ethyl]aminoquinazoline

m.p. 185.degree..about.187.degree. C.

4-[2-(2,4,6-Tribromophenoxy)ethyl]aminoquinazoline

m.p. 181.degree..about.183.degree. C.

4-[2-(1-Naphthoxy)ethyl]aminoquinazoline

m.p. 163.degree..about.165.degree. C.

6-Chloro-4-[2-(1-naphthoxy)ethyl]aminoquinazoline

m.p. 165.degree..about.167.degree. C.

4-[2-Benzylthio)ethyl]aminoquinazoline

m.p. 111.degree..about.113.degree. C.

2-Chloro-4-[2-(benzylthio)ethyl]aminoquinazoline

m.p. 107.degree..about.109.degree. C.

4-(3-Methoxypropyl)aminoquinazoline

m.p. 105.degree..about.107.degree. C.

4-(3-Ethoxypropyl)aminoquinazoline

m.p. 101.degree..about.103.degree. C.

2-Chloro-4-(3-ethoxypropyl)aminoquinazoline

m.p. 92.degree..about.95.degree. C.

6-Nitro-4-(3-ethoxypropyl)aminoquinazoline

m.p. 141.degree..about.143.degree. C.

4-(3-Isopropoxypropyl)aminoquinazoline

m.p. 84.degree..about.86.degree. C.

4-(3-n-Butoxypropyl)aminoquinazoline

m.p. 77.degree..about.79.degree. C.

2-Chloro-4-(3-n-butoxypropyl)aminoquinazoline

m.p. 86.degree..about.88.degree. C.

4-[3-(2-Ethylhexyloxy)propyl]aminoquinazoline

m.p. 36.degree..about.40.degree. C.

6-Nitro-4-[3-(2-ethylhexyloxy)propyl]aminoquinazoline

m.p. 55.degree..about.58.degree. C.

4-(3-Phenylthiopropyl)aminoquinazoline

m.p. 103.degree..about.105.degree. C.

2-Chloro-4-(3-phenoxypropyl)aminoquinazoline

m.p. 118.degree..about.120.degree. C.

2-Chloro-4-(3-phenylthiopropyl)aminoquinazoline

m.p. 86.degree..about.89.degree. C.

6-Methyl-4-(3-phenoxypropyl)aminoquinazoline

m.p. 121.degree..about.123.degree. C.

6-Methyl-4-(3-phenylthiopropyl)aminoquinazoline

m.p. 121.degree..about.123.degree. C.

4-[3-(2-Chlorophenoxy)propyl]aminoquinazoline

m.p. 144.degree..about.145.degree. C.

4-[3-(2-Methylphenoxy)propyl]aminoquinazoline

m.p. 147.degree..about.149.degree. C.

4-[3-(2-Methylphenylthio)propyl]aminoquinazoline

m.p. 99.degree..about.102.degree. C.

4-[3-(2-Methoxyphenoxy)propyl]aminoquinazoline

m.p. 138.degree..about.139.degree. C.

4-[3-(3-Chlorophenoxy)propyl]aminoquinazoline

m.p. 145.degree..about.147.degree. C.

4-[3-(3-Methylphenoxy)propyl]aminoquinazoline

m.p. 153.degree..about.155.degree. C.

4-[3-(3-Methylphenylthio)propyl]aminoquinazoline

m.p. 73.degree..about.76.degree. C.

2-Chloro-4-[3-(3-methylphenoxy)propyl]aminoquinazoline

m.p. 96.degree..about.99.degree. C.

2-Chloro-4-[3-(3-methylphenylthio)propyl]aminoquinazoline

m.p. 70.degree..about.73.degree. C.

4-[3-(4-Chlorophenoxy)propyl]aminoquinazoline

m.p. 148.degree..about.150.degree. C.

2-Chloro-4-[3-(4-chlorophenoxy)propyl]aminoquinazoline

m.p. 131.degree..about.133.degree. C.

4-[3-(4-Methylphenoxy)propyl]aminoquinazoline

m.p. 151.degree..about.152.degree. C.

4-[3-(4-Methylphenylthio)propyl]aminoquinazoline

m.p. 129.degree..about.131.degree. C.

2-Chloro-4-[3-(4-methylphenylthio)propyl]aminoquinazoline

m.p. 82.degree..about.85.degree. C.

4-[3-(4-Methoxyphenoxy)propyl]aminoquinazoline

m.p. 136.degree..about.138.degree. C.

4-[3-(2,5-Dimethylphenoxy)propyl]aminoquinazoline

m.p. 142.degree..about.144.degree. C.

4-[3-(2-Methyl-4-chlorophenoxy)propyl]aminoquinazoline

m.p. 178.degree..about.181.degree. C.

4-[3-(2-Chloro-4-methoxyphenoxy)propyl]aminoquinazoline

m.p. 166.degree..about.169.degree. C.

4-[3-(3-Methyl-4-chlorophenoxy)propyl]aminoquinazoline

m.p. 137.degree..about.139.degree. C.

4-[3-(3,5-Dimethylphenoxy)propyl]aminoquinazoline

m.p. 116.degree..about.118.degree. C.

4-[3-(1-Naphthoxy)propyl]aminoquinazoline

m.p. 132.degree..about.134.degree. C.

4-(1-Methyl-2-phenoxyethyl)aminoquinazoline

m.p. 125.degree..about.128.degree. C.

2-Chloro-4-(1-methyl-2-phenoxyethyl)aminoquinazoline

m.p. 168.degree..about.170.degree. C.

6-Methyl-4-(1-methyl-2-phenoxyethyl)aminoquinazoline

m.p. 150.degree..about.152.degree. C.

4-[1-Methyl-2-(2-methylphenoxy)ethyl]aminoquinazoline

m.p. 134.degree..about.136.degree. C.

4-[1-Methyl-2-(2-methoxyphenoxy)ethyl]aminoquinazoline

m.p. 165.degree..about.167.degree. C.

4-[1-Methyl-2-(3-chlorophenoxy)ethyl]aminoquinazoline

m.p. 163.degree..about.166.degree. C.

4-[1-Methyl-2-(3-methylphenoxy)ethyl]aminoquinazoline

m.p. 130.degree..about.132.degree. C.

4-[1-Methyl-2-(4-chlorophenoxy)ethyl]aminoquinazoline

m.p. 156.degree..about.159.degree. C.

2-Chloro-4-[1-methyl-2-(4-chlorophenoxy)ethyl]aminoquinazoline

m.p. 125.degree..about.128.degree. C.

4-[1-Methyl-2-(4-methylphenoxy)ethyl]aminoquinazoline

m.p. 171.degree..about.173.degree. C.

2-Chloro-4-[1-methyl-2-(4-methylphenoxy)ethyl]aminoquinazoline

m.p. 139.degree..about.141.degree. C.

4-(2-Methyl-2-phenoxyethyl)aminoquinazoline

m.p. 162.degree..about.164.degree. C.

2-Chloro-4-(2-methyl-2-phenoxyethyl)aminoquinazoline

m.p. 144.degree..about.146.degree. C.

4-[2-Methyl-2-(2-chlorophenoxy)ethyl]aminoquinazoline

m.p. 151.degree..about.153.degree. C.

4-[2-Methyl-2-(2-methylphenoxy)ethyl]aminoquinazoline

m.p. 152.degree..about.154.degree. C.

2-Chloro-4-[2-methyl-2-(2-methylphenoxy)ethyl]aminoquinazoline

m.p. 122.degree..about.125.degree. C.

4-[2-Methyl-2-(2-methoxyphenoxy)ethyl]aminoquinazoline

m.p. 135.degree..about.138.degree. C.

4-[2-Methyl-2-(3-chlorophenoxy)ethyl]aminoquinazoline

m.p. 140.degree..about.142.degree. C.

4-[2-Methyl-2-(3-methylphenoxy)ethyl]aminoquinazoline

m.p. 123.degree..about.126.degree. C.

4-[2-Methyl-2-(4-chlorophenoxy)ethyl]aminoquinazoline

m.p. 165.degree..about.168.degree. C.

2-Chloro-4-[2-methyl-2-(4-chlorophenoxy)ethyl]aminoquinazoline

m.p. 160.degree..about.162.degree. C.

4-[2-Methyl-2-(4-methylphenoxy)ethyl]aminoquinazoline

m.p. 163.degree..about.164.degree. C.

2-Chloro-4-[2-methyl-2-(4-methylphenoxy)ethyl]aminoquinazoline

m.p. 138.degree..about.141.degree. C.

4-(4-Phenoxybutyl)aminoquinazoline.monohydrate

m.p. 90.degree..about.93.degree. C.

6-Methyl-4-(4-phenoxybutyl)aminoquinazoline

m.p. 110.degree..about.112.degree. C.

4-[4-(2-Chlorophenoxy)butyl]aminoquinazoline

m.p. 151.degree..about.153.degree. C.

4-[4-(2-Methylphenoxy)butyl]aminoquinazoline

m.p. 152.degree..about.153.degree. C.

4-[4-(2-Methoxyphenoxy)butyl]aminoquinazoline

m.p. 135.degree..about.137.degree. C.

4-[4-(3-Methylphenoxy)butyl]aminoquinazoline

m.p. 110.degree..about.112.degree. C.

4-[4-(4-Methylphenoxy)butyl]aminoquinazoline

m.p. 121.degree..about.123.degree. C.

4-(2-Ethyl-2-phenoxyethyl)aminoquinazoline

m.p. 158.degree..about.160.degree. C.

4-(2,2-Dimethyl-2-phenoxyethyl)aminoquinazoline

m.p. 98.degree..about.100.degree. C.

2-Chloro-4-(2,2-dimethyl-2-phenoxyethyl)aminoquinazoline

m.p. 132.degree..about.134.degree. C.

4-[2,2-Dimethyl-2-(2-chlorophenoxy)ethyl]aminoquinazoline

m.p. 89.degree..about.91.degree. C.

4-[2,2-Dimethyl-2-(2-methylphenoxy)ethyl]aminoquinazoline

m.p. 96.degree..about.99.degree. C.

2-Chloro-4-[2,2-dimethyl-2-(2-methylphenoxy)ethyl]aminoquinazoline

m.p. 110.degree..about.112.degree. C.

4-[2,2-Dimethyl-2-(2-methoxyphenoxy)ethyl]aminoquinazoline

m.p. 103.about.105.degree. C.

4-[2,2-Dimethyl-2-(3-chlorophenoxy)ethyl]aminoquinazoline

m.p. 111.degree..about.113.degree. C.

4-[2,2-Dimethyl-2-(3-methylphenoxy)ethyl]aminoquinazoline

m.p. 97.degree..about.100.degree. C.

2-Chloro-4-[2,2-dimethyl-2-(3-methylphenoxy)ethyl]aminoquinazoline

m.p. 103.degree..about.106.degree. C.

4-[2,2-Dimethyl-2-(4-chlorophenoxy)ethyl]aminoquinazoline

m.p. 104.degree..about.106.degree. C.

4-[2,2-Dimethyl-2-(4-methylphenoxy)ethyl]aminoquinazoline

m.p. 92.degree..about.94.degree. C.

4-[5-(2-Chlorophenoxy)pentyl]aminoquinazoline

m.p. 115.degree..about.117.degree. C.

4-[5-(2-Methylphenoxy)pentyl]aminoquinazoline

m.p. 96.degree..about.98.degree. C.

4-[5-(2-Methoxyphenoxy)pentyl]aminoquinazoline

m.p. 104.degree..about.106.degree. C.

4-[5-(3-Methylphenoxy)pentyl]aminoquinazoline

m.p. 113.degree..about.115.degree. C.

4-[5-(4-Methylphenoxy)pentyl]aminoquinazoline

m.p. 128.degree..about.130.degree. C.

4-(6-Phenoxyhexyl)aminoquinazoline

m.p. 105.degree..about.108.degree. C.

4-(7-Phenoxyheptyl)aminoquinazoline

m.p. 83.degree..about.86.degree. C.

4-(8-Phenoxyoctyl)aminoquinazoline

m.p. 74.degree..about.78.degree. C.

4-[2-(2-n-Propylphenoxy)ethyl]aminoquinazoline

m.p. 74.degree..about.78.degree. C.

6-Methyl-4-[4-(2-chlorophenoxy)butyl]aminoquinazoline

m.p. 113.degree..about.116.degree. C.

4-[2-(2-Methoxy-4-methylphenoxy)ethyl]aminoquinazoline

m.p. 155.degree..about.156.degree. C.

4-[2-(3-Methoxyphenoxy)ethyl]aminoquinazoline

m.p. 165.degree..about.166.degree. C.

4-[2-(2-Methoxy-4-chlorophenoxy)ethyl]aminoquinazoline

m.p. 163.degree..about.166.degree. C.

4-[2-(2-Methyl-3-chlorophenoxy)ethyl]aminoquinazoline

m.p. 154.degree..about.156.degree. C.

2-Methyl-4-(3-phenoxypropyl)aminoquinazoline

m.p. 111.degree..about.115.degree. C.

4-[2-(2,5-Dimethoxyphenoxy)ethyl]aminoquinazoline

m.p. 178.degree..about.180.degree. C.

4-[2-(3,5-Dimethyl-4-bromophenoxy)ethyl]aminoquinazoline

m.p. 218.degree..about.220.degree. C.

4-[2-(2,4-Dichloro-6-methylphenoxy)ethyl]aminoquinazoline

m.p. 165.degree..about.167.degree. C.

4-[2-(2-Trifluoromethyl-4-chlorophenoxy)ethyl]aminoquinazoline

m.p. 159.degree..about.162.degree. C.

6-Chloro-4-[2-(2-Chlorophenoxy)ethyl]aminoquinazoline

m.p. 176.degree..about.178.degree. C.

4-[2-(2-n-Butoxyphenoxy)ethyl]aminoquinazoline

m.p. 89.degree..about.92.degree. C.

4-[2-(2-Trifluoromethylphenoxy)ethyl]aminoquinazoline

m.p. 143.degree..about.145.degree. C.

4-[2-(4-Bromophenylthio)ethyl]aminoquinazoline

m.p. 162.degree..about.163.degree. C.

4-[2-(4-Isopropoxyphenoxy)ethyl]aminoquinazoline

m.p. 148.degree..about.151.degree. C.

4-[2-(2,4-Dibromophenoxy)ethyl]aminoquinazoline

m.p. 161.degree..about.163.degree. C.

6-Chloro-4-[2-(2,4,6-trichlorophenoxy)ethyl]aminoquinazoline

m.p. 185.degree..about.187.degree. C.

4-[2-(2,3,6-Trimethylphenoxy)ethyl]aminoquinazoline

m.p. 155.degree..about.158.degree. C.

4-[2-(Benzyloxy)ethyl]aminoquinazoline

m.p. 111.degree..about.113.degree. C.

4-(3-Phenoxypropyl)aminoquinazoline

m.p. 129.degree..about.131.degree. C.

6-Nitro-4-(3-phenoxypropyl)aminoquinazoline

m.p. 121.degree..about.123.degree. C.

2-Chloro-4-[3-(4-chlorophenoxy)propyl]aminoquinazoline

m.p. 131.degree..about.133.degree. C.

2-Chloro-4-[2,2-dimethyl-2(4-methylphenoxy)ethyl]aminoquinazoline

m.p. 121.degree..about.124.degree. C.

4-(5-Phenoxypentyl)aminoquinazoline

m.p. 106.degree..about.108.degree. C.

4-[6-(2-Methylphenoxy)hexyl]aminoquinazoline

m.p. 90.degree..about.92.degree. C.

4-[7-(2-Methylphenoxy)heptyl]aminoquinazoline

m.p. 88.degree..about.91.degree. C.

4-[8-(2-Methylphenoxy)octyl]aminoquinazoline

m.p. 70.degree..about.73.degree. C.

4-[12-(2-Methylphenoxy)dodecyl]aminoquinazoline

m.p. 66.degree..about.70.degree. C.

4-[2-(2-n-Butylphenoxy)ethyl]aminoquinazoline

m.p. 159.degree..about.163.degree. C.

4-[2-(2-tert-Butylphenoxy)ethyl]aminoquinazoline

m.p. 158.degree..about.160.degree. C.

The compounds in this invention may be formulated for use with the preparations commonly employed as an agricultural fungicide, for example, powdery dusts, coarse dusts, fine granules, granules, wettable powders, emulsifiable concentrates, aqueous liquids, water soluble powders, oil suspensions and so on, with admixture of a carrier and, if required, other auxiliary agents. The carrier as used herein means a synthetic or natural and inorganic or organic substance that is mixed with an active compound and can assist an active compound in its arrival to the sitis to be treated and make it easy to store, transport or handle.

As suitable solid carriers may be mentioned inorganic substances such as clays, which may be represented by Kaolinite, Montmorillonite or Attapulgite, talc, mica, pyrophyllite, pumice, vermiculite, gypsum, calcium carbonate, dolomite, diatomaceous earth, magnesium carbonate, apatite, zeolite, silicic anhydride, synthetic calcium silicate and the like, vegetable organic substances such as soybean meal, tobacco powder, walnut powder, wheat flour, wood meal, starch, crystalline cellulose and the like, synthetic or natural high polymer compounds such as cumarone resin, petroleum resin, alkyd resin, polyvinyl chloride, polyalkylene glycol, ketone resin, ester gum, copal gum, dammar gum, and the like, waxes such as carnauba wax, beeswax and the like, or urea.

As suitable liquid media or carriers may be mentioned paraffin or naphthene hydrocarbons such as kerosine, mineral oil, spindle oil, white oil and the like, aromatic hydrocarbons such as benzene, toluene, xylene, ethylbenzene, cumene, methylnaphthalene and the like, chlorinated hydrocarbons such as carbon tetra chloride, chloroform, trichloroethylene, monochlorobenzene, o-chlorotoluene and the like, ethers such as dioxane, tetrahydrofuran and the like, ketones such as acetone, methyl ethyl ketone, diisobutylketone, cyclohexanone, acetophenone, isophorone and the like, esters such as ethyl acetate, amyl acetate, ethylene glycol acetate, diethylene glycol acetate, dibutyl maleate, diethyl succinate and the like, alcohols such as methanol, n-hexanol, ethylene glycol, diethylene glycol, cyclohexanol, benzyl alcohol and the like, ether alcohols such as ethylene glycol ethyl ether, ethylene glycol phenyl ether, diethylene glycol ethyl ether, diethylene glycol butyl ether and the like, polar solvents such as dimethylformamide, dimethylsulfoxide and the like, or water.

As the surface active agents used for emulsifying, dispersing, wetting, spreading, binding, controlling disintegration, stabilizing active ingredient, improving fluidity, rust proofing and so on may be utilized any of non-ionic, anionic, cationic and amphoteric ones, but non-ionic and/or anionic agents are usually employed. As suitable non-ionic surface active agents may be mentioned, for example, polymerization adducts of ethylene oxide and higher alcohols such as lauryl alcohol, stearyl alcohol, oleyl alcohol and the like, polymerization adducts of ethylene oxide and alkyl phenols such as isooctyl phenol, nonyl phenol and the like, polymerization adducts of ethylene oxide and alkyl naphthols such as butyl naphthol, octyl naphthol and the like, polymerization adducts of ethylene oxide and higher fatty acids such as palmitic acid, stearic acid, oleic acid and the like, polymerization adducts of ethylene oxide and mono- or di-alkyl phosphoric acids such as stearyl phosphoric acid, dilauryl phosphoric acid and the like, polymerization adducts of ethylene oxide and amines such as dodecyl amine, stearic acid amide and the like, polymerization adducts of ethylene oxide and higher fatty acid esters of polyhydric alcohols such as sorbitan and said fatty acid esters, polymerization adducts of ethylene oxide of propylene oxide and so on. As suitable anionic surface active agents may be mentioned, for example, alkyl sulfate salts such as sodium lauryl sulfate, oleyl sulfate amine salt and the like, alkyl sulfonate salts such as sodium dioctyl sulfosuccinate, sodium 2-ethylhexene sulfonate and the like, aryl sulfonate salts such as sodium isopropylnaphthalene sulfonate, sodium methylenebisnaphthalene sulfonate, sodium ligninsulfonate, sodium dodecylbenzene sulfonate and the like.

Moreover, the agricultural fungicidal compositions of this invention may be used in combination with high molecular compounds or other auxiliary agents such as casein, gelatin, albumin, glue, sodium alginate, carboxymethyl cellulose, methyl cellulose, hydroxyethyl cellulose, polyvinyl alcohol and the like for improving properties and increasing biological effects thereof.

The above-mentioned carriers and various auxiliary agents may be optionally utilized alone or in combination for desired purposes, with consideration for the type of preparation, application and other factors.

Dusts usually contain, for example, 1 to 25 parts by weight of the active compound and the remainder is a solid carrier.

Wettable powders usually contain, for example, 25-90 parts by weight of the active compound and the remainder is a solid carrier and a dispersing and wetting agent, if required, together with a protective colloidal agent, a thixotropic agent, an anti-foaming agent and the like.

Granules usually contain 1-35 parts by weight of the active compound and a major portion of the remainder is a solid carrier. The active compound is homogeneously admixed with the solid carrier or adhered or adsorbed on the carrier surface and the size of a granule is about 0.2-1.5 mm.

Emulsifiable concentrates usually contain, for example, 5-50 parts by weight of the active compound and about 5-20 parts by weight of an emulsifying agent, the remainder being a liquid carrier, if required, together with a corrosive inhibitor.

The fungicidal compositions of this invention which are formulated into various types of preparations as above, may be applied in a paddy or upland field at 1-5000 g, preferably 10-1000 g of the active ingredient per 10 acres, for pre- or post-emergence foliage spraying or soil drenching or spraying onto water to control diseases effectively.

Further, the fungicidal compositions of this invention, when employed for seed disinfection or coating, may effectively control soil-borne or seed infectious diseases by coating seeds at 0.1-2%, preferably 0.2-0.5%, of the active ingredient per weight of the seed.

The fungicidal compositions of this invention may be preferably combined with other fungicides for broader fungicidal spectra and, in some cases, a synergistic effect is expectable.

As examples of such other fungicides may be, for instance, carbamate type fungicides such as 3,3'-ethylene-bis(tetrahydro-4,6-dimethyl-2H-1,3,5-thiadiazine-2-thione; zinc or manganese ethylenebisdithiocarbamate; bis(dimethyldithiocarbamoyl)disulfide; zinc propylenebisdithiocarbamate; bis(dimethyldithiocarbamoyl)ethylenediamine; nickel dimethyldithiocarbamate; methyl 1-(butylcarbamoyl))-2-benzimidazolcarbamate; 1,2-bis(3-methoxycarbonyl-2-thioureido)benzene; phosphorous type fungicides such as O,O-diisopropyl-S-benzylphosphorothioate; O-ethyl-S,S-diphenyldithiophosphate and the like, dicarboximide type fungicides such as N-trichloromethylthio-4-cyclohexene-1,2-dicarboximide; N-tetrachloroethylthio-4-cyclohexene-1,2-dicarboximide and the like, oxazine type fungicides such as 5,6-dihydro-2-methyl-1,4-oxazine-3-carboxanilide-4,4-dioxide; 5,6-dihydro-2-methyl-1,4-oxazine-3-carboxanilide and the like, naphthoquinone type fungicides such as 2,3-dichloro-1,4-naphthoquinone and the like, other fungicides such as pentachloronitrobenzene; 3-hydroxy-5-methylisoxazole; N-(2,3-dichlorophenyl)tetrachlorophthalamic acid; 5-ethoxy-3-trichloromethyl-1,2,4-thiadiazole; 2,4,6-trichloro-6-(o-chloroanilino)-1,3,5-triazine; 2,3-dicyano-1,4-dithioanthraquinone; copper 8-quinolate; Validamycin; cycloheximide; iron methanearsonate; tetrachloroisophthalonitrile; 2-(1-methylpropyl)-4,6-dinitrophenyl .beta.,.beta.-dimethylacrylate; triphenyltinhydroxide; Polyoxin; Phytomycin, Kasugamycin; Blasticidin S; 4,5,6,7-tetrachlorophthalide and the like, but they are not critical.

The fungicidal compositions of the invention may also be applied in a mixture with insecticides as illustratively given below: phosphorus type insecticides such as O,O-diethyl O-(2-isopropyl-4-methyl-6-pyrimidinyl)phosphorothioate; O,O-diethyl S-2-[(ethylthio)ethyl]phosphorodithioate; O,O-dimethyl O-(3-methyl-4-nitrophenyl)thiophosphate; O,O-dimethyl S-(N-methylcarbamoylmethyl)phosphorodithioate; O,O-dimethyl S-(N-methyl-N-formylcarbamoylmethyl)phosphorodithioate; O,O-dimethyl S-2-(ethylthio)ethylphosphorodithioate; O,O-dimethyl-1-hydroxy-2,2,2-trichloroethylphosphonate; O,O-diethyl-O-(5-phenyl-3-isoxazolyl)-phosphorothioate; methyl(4-bromo-2,5-dichlorophenyl)-phenylphosphonothioate; O,O-dimethyl-O-(3-methyl-4-methylmercaptophenyl)thiophosphate; O-ethyl-O-p-cyanophenyl phenylphosphonothioate; O,O-diethyl S-(1,2-dicarboethoxyethyl)phosphorodithioate; 2-chloro-1-(2,4,5-trichlorophenyl) vinyldimethyl phosphate; 2-chloro-1-(2,4-dichlorophenyl)-vinyldimethyl phosphate; O,O-dimethyl O-p-cyanophenyl phosphorothioate; 2,2-dichlorovinyl dimethyl phosphate; O,O-diethyl O-2,4-dichlorophenyl phosphorothioate; ethyl mercaptophenylacetate O,O-dimethyl phosphorodithioate; S-[(6-chloro-2-oxo-3-benzoxazolinyl)-methyl]O,O-diethylphosphorodithioate; 4-mercaptothiophenyl dipropylphosphate; 2-chloro-1-(2,4-dichlorophenyl)vinyl diethylphosphate; O,O-diethyl-O-(3-oxo-2-phenyl-2H-pyridazin-6-yl)phosphorothioate; O,O-dimethyl S-(1-methyl-2-ethylsulfinyl)-ethyl phosphorothiolate; O,O-dimethyl S-phthalimidomethyl phosphoroditioate; dimethylmethylcarbamoylethylthioethyl thiophosphorothiolate; O,O-diethyl S-(N-ethoxycarbonyl-N-methylcarbamoylmethyl) phosphorodithioate; O,O-dimethyl-S-[2-methoxy-1,3,4-thiadiazol-5(4H)-onyl-(4)-methyl]dithiopho sphate; 2-methoxy-4H-1,3,2-benzodioxaphosphorin 2-sulfide; O,O-diethyl-O-(3,5,6-trichloro-2-pyridyl)phosphorothioate; O-ethyl-O-2,4-dichlorophenyl thionobenzene phosphonate; S-[4,6-diamino-S-triazin-2-yl-methyl]-O,O-dimethyl phosphorodithioate; O-ethyl O-p-nitrophenylphenylphosphorothioate; O,S-dimethyl-N-acetyl phosphoroamidothioate or the like; carbamate type insecticides such as 1-naphthyl N-methylcarbamate; S-methyl-N-[methylcarbamoyloxy]thioacetoimidate; m-tolyl methylcarbamate; 3,4-xylyl methylcarbamate; 3,5-xylyl methylcarbamate; 2-sec-butylphenyl-N-methylcarbamate; 2-isopropoxyphenyl-N-methylcarbamate; 1,3-bis(carbamoylthio)-2-(N,N-dimethylamino)propane hydrochloride; and the like, other insecticides such as N,N-dimethyl-N'-(2-methyl-4-chlorophenyl) formamidine hydrochloride, nicotine sulfate, Milbemycin, 6-methyl,2,3-quinoxalinedithiocyclic S,S-dithiocarbonate, 2,4-dinitro-6-sec-butylphenyl dimethylacrylate; 1,1-bis(p-chlorophenyl)-2,2,2-trichloroethanol; 2-(p-tert-butylphenoxy)isopropyl-2'-chloroethylsulfite; azoxybenzene; di-(p-chlorophenyl)-cyclopropyl carbinol; isopropyl-4,4'-dichlorobenzylate; ethyl-4,4'-dichlorobenzylate; or machine oil and the like.

The fungicidal composition of this invention can be used with a controlling agent against rice blast, Helminothosporium leaf spot, bacterial leaf blight, rice stem borer, planthopper and/or leafhopper to save labor. The agricultural chemicals, which may be used with the present fungicidal composition, are as mentioned hereinabove. The combination ratio of these agents may vary depending upon diseases or insects to be controlled and preparation forms to be used, these agents are prepared and applied with an effective amount of active ingredients required for controlling. In particular, dusts and fine granules are preferable for controlling rice plant diseases and soil treatment.

Examples of the agricultural fungicidal composition of this invention will be given below. All parts are given by weight unless otherwise stated.

Five parts of the compound having compound No. 8, 50 parts of talc and 45 parts of kaolin were uniformly mixed to form dusts.

Fifty parts of the compound having compound No. 20, 29 parts of clay, 10 parts of diatomaceous earth, 5 parts of white carbon, 3 parts of sodium lignosulfonate, 2 parts of "Newcol" 1106 (trade name, Nihon Nyukazai K.K. Japan) and 1 part of polyvinyl alcohol were uniformly mixed in a mixer and pulverized three times by a hammer mill to give wettable powders.

Seventy parts of the compound having compound No. 32 was finely pulverized and 30 parts of clay was added thereto and then mixed in a mixer to form a premixture. 10 parts of the premix was uniformly mixed with 60 parts of clay and 30 parts of bentonite in a mixer. The mixture was kneaded with a suitable amount of water in a kneader, extruded through a screen having a diameter of 0.8 mm and dried in a draft drier at 50.degree. C. The product thus formed was adjusted by a sifter to form granules.

Experimental examples of the present fungicidal compositions thus prepared are given below. The wettable powders prepared according to the procedures in the abovementioned Formulation 2 are used in the following experiments, each containing 50% by weight of the active compound of this invention.

Rice plant seedlings, variety Nohrin No. 20, at 4 to 5 leaf stage were sprayed with each test preparation at 500 ppm in a total amount of 30 ml per 2 pots. After 3 days, the rice blast fungi were inoculated into the host plants by spraying a spore suspension of Piricularia oryzae, and the host plants were kept in a room for 48 hours under conditions at 20 .degree. to 22.degree. C. 100% relative humidity. The host plants were then placed in a greenhouse at 24.degree. to 26.degree. C., and after further 3 days the number of diseased spots of the upper two leaves of the host plants was investigated. Each test was conducted at triplicate runs and the damage was indicated by the mean number of diseased spots per leaf.

The results are given in Table 1. None of the active compounds exhibited phototoxicity.

Following the procedures of Experiment 1, but using a spore suspension of Cochliobolus miyabeanus and test preparations at 500 ppm, the effect against the brown spot was tested. Each test was conducted at triplicate runs and the damage was indicated by the mean number of diseased spots per leaf. The results are given in Table 2. None of the active compounds exhibited any phytotoxicity.

Groups of rice plants, variety Kimmaze, were planted in a series of Wager pots having a surface area of 1/5000 are and grown to the flag leaf stage. Each rice plant was inoculated with a suspension of pathogenic microorganism Xanthomonas oryzae by spraying and then kept for 1 day in a room at 26.degree. to 28.degree. C., 100% relative humidity. The pots were placed in a greenhouse at 28.degree. C. Three days after the inoculation, each pot was treated with 20 ml of an aqueous suspension containing 1000 ppm of one of the active compounds shown in Table 3, applied to the host plants by spraying over their stems and leaves. 20 days after the application of the active compounds, the diseased area percentage of the flag and second leaves was measured. Three pots were used for each test. The results are given in Table 3. Compounds No. 43 and No. 55 showed slight phytotoxicity.

Groups of tomatoes, variety Shinfukuju, at the 5 to 6 leaf stage were sprayed with 20 ml per pot of an aqueous suspension containing 500 ppm of one of the active compounds shown in Table 4. After air-drying, each plant was inoculated with a spore suspension of pathogenic microorganism Phytophthora infestans by spraying and kept for 24 hours in a wet room at 20.degree. C. and more than 95% humidity. The pots were then kept in a greenhouse at 25.degree. C., and after 5 days, the diseased area of the upper three leaves of each plant was measured. Two pots were used for each test and the average diseased area per leaf was calculated. The results are given in Table 4. None of the active compounds exhibited any phytotoxicity.

Groups of two tomato plants, variety Shinfukuju, were planted in a series of Wager pots having a diameter of 12 cm and used as host plants when at the 5 to 6 leaf stage. Each pot was treated with 30 ml of an aqueous suspension containing 500 ppm of one of the active compounds shown in Table 5, applied to the host plants by spraying over their stems and leaves. After air-drying, each plant was inoculated with a spore suspension of the pathogenic microorganism Alternalia solani and kept in a wet room for 24 hours at 20.degree.-22.degree. C., 100% relative humidity. The pots were then placed in a greenhouse for 3 days. The presence of the disease of all leaves was investigated and the number of disease spots per leaf was calculated, using three pots for each test. The results are given in Table 5. None of the active compounds exhibited any phytotoxicity.

Groups of two cucumber plants, variety Sagamihanshiro, were planted in a series of Wagner pots having a diameter of 12 cm and used as host plants when the first leaf was fully grown and open. Each test group of three pots was treated with one of the active compounds shown in Table 6, by spraying on an aqueous suspension containing 500 ppm of the active compound at the rate of 30 ml per 3 pots. After air-drying, the host plants were inoculated by spraying with a spore suspension of the pathogenic microorganism Colletotrichum lagenarium and kept in a wet room for 24 hours at 20.degree. to 22.degree. C., 100% relative humidity. The pots were then placed in a greenhouse at 26.degree. C., and seven days after the inoculation, the diseased area percentage of the cotyledon and the first leaf was calculated. The results are given in Table 6.

None of the active compounds exhibited any phytotoxicity.

Cucumber seedlings, variety Sagamihanshiro, planted two per 12 cm diameter pot, were used as host plants at the stage when the first leaf was fully grown and open. Each test group of three pots was treated with one of the active compounds shown in Table 7, by spraying on an aqueous suspension containing 500 ppm of the active compound at the rate of 20 ml per 3 pots. After air-drying, the host plants were inoculated with Sphaerotheca fuliginea by brushing already infected cucumber leaves with a small brush and letting the microorganism fall onto the host plants. The inoculated plants were kept in a greenhouse at 24.degree. to 26.degree. C. for 10 days, and at the end of this period the diseased area percentage was measured. Three pots were used for each test. The results are given in Table 7. None of the active compounds exhibited any phytotoxicity.

Cabbage leaves were dipped for 30 seconds in an aqueous suspension containing 1000 ppm or 100 ppm of one of the active compounds shown in Table 8. After air-drying, the leaves were placed on vermiculite in a plastic receptacle of 15 cm.times.20 cm, and five per receptacle of the fourth instar larvae of cabbage armyworm were released on the leaves, while other leaves without dipping being placed 12 cm away from the dipped leaves in the receptacle.

After 24 hours, the extent of ingestion of the dipped and non-dipped leaves was measured, using two receptacles for each test.

The results are given in Table 8.

Cabbage leaves were dipped for 30 seconds in an aqueous suspension containing 1000 ppm or 100 ppm of one of the active compounds shown in Table 9. After air-drying, the leaves were placed in a plastic receptacle having a diameter of 8 cm, and 10 per receptacle of the third instar larvae of tobacco cutworm were released on the leaves. After 72 hours, the extent of ingestion of the leaves was measured, using two receptacles for each test. The results are given in Table 9.