申请人:MAY & BAKER LIMITED
公开号:EP0034945A2
公开(公告)日:1981-09-02
N-Phenylpyrazole derivatives of the formula:-
(wherein each of R5 and R6 represents a C1-C4 alkyl or alkoxy radical, a trifluoromethyl, trifluoromethoxy, nitro, cyano or primary amino radical, or a fluorine, chlorine or bromine atom, each of R', R' and R9 represents a hydrogen atom, a C1-C4 alkyl or alkoxy radical, a trifluoromethyl, trifluoromethoxy, nitro, cyano or primary amino radical or a fluorine, chlorine or bromine atom, or R5, R7, R' and R9 each represents a hydrogen atom and R6 represents a trifluoromethoxy or trifluoromethyl radical, and R10 represents a cyano radical or substituted carbamoyl radical -CONHR", wherein R" represents a methyl or ethyl radical) have been found to possess useful herbicidal properties. All such N-phenylpyrazole derivatives with the exception of 5-amino-4-cyano-1-(2,4-dichlorophenyl)pyrazole and 5-amino-4-cyano-1- (4-chloro-2-methylphenyl)pyrazole are new compounds. Herbicidal compositions containing such N-phenylpyrazole derivatives are described and also processes for the prepararation of the new compounds.
式中的 N-苯基吡唑衍生物
(其中R5和R6各自代表C1-C4烷基或烷氧基、三氟甲基、三氟甲氧基、硝基、氰基或伯氨基或氟、氯或溴原子,R'、R'和R9各自代表氢原子、C1-C4烷基或烷氧基、三氟甲基、三氟甲氧基、硝基、氰基或伯氨基或氟、R5、R7、R'和 R9 各代表一个氢原子,R6 代表三氟甲氧基或三氟甲基基,R10 代表氰基或取代的氨基甲酰基 -CONHR",其中 R "代表甲基或乙基)已被发现具有有用的除草特性。除 5-氨基-4-氰基-1-(2,4-二氯苯基)吡唑和 5-氨基-4-氰基-1-(4-氯-2-甲基苯基)吡唑外,所有这些 N-苯基吡唑衍生物都是新化合物。本文介绍了含有此类 N-苯基吡唑衍生物的除草组合物,以及制备这些新化合物的工艺。