| 摘要 |
5-Isoxazalyl ureas of formula <CHEM> and salts thereof, wherein R<1> represents a hydrogen or halogen atom or a nitro, amino, substituted amino, alkyl, substituted alkyl, cycloalkyl, aryl, substituted aryl, aralkyl, or substituted aralkyl, group, or a group of formula -XR<6> or -COOR<1><5> in which X represents oxygen, sulphur, sulphinyl or sulphonyl, R<6> represents alkyl or aryl, and R<1><5> represents a hydrogen atom or an alkyl, substituted alkyl, aryl, substituted aryl, or cycloalkyl, group; R<2> represents cyano, nitro, carboxy, carboxy ester, carboxyamide, carboxyamide whose amide group is substituted, or a group of formula <CHEM> in which <CHEM> represents a 5-7 ring membered heterocyclic radical which optionally may be substituted; R<3> represents hydrogen, alkyl or a group of formula -@-R<7> in which R<7> represents alkyl, aryl, alkoxy or alkylthio; R<4> represents hydrogen, alkyl or cycloalkyl; R<5> represents hydrogen, alkyl, cycloalkyl, alkoxy, aryl or substituted aryl; or R<3> and R<5> together represent alkylene, optionally unsaturated, optionally interrupted by one or more atoms selected from nitrogen, oxygen, and sulphur atoms, and optionally substituted, are new compounds, which are pesticides or plant growth regulants, particularly selective herbicides.
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