Pyridine derivatives, processes for preparing them, herbicidal compositions containing them and methods of killing plants therewith
申请人:IMPERIAL CHEMICAL INDUSTRIES PLC
公开号:EP0021613A1
公开(公告)日:1981-01-07
Herbicidal phenoxypyridine compounds of the formula
wherein each of A and B is hydrogen, halogen, or CF2H-, CF2CI-, or CF3, provided that at least one of A and B is halogenomethyl, C is carboxyl or a functional derivative thereof, or halogen or OR1, SR1, or-NR1R2 wherein R1 is C3-C12 alkenyl, C1-C12 alkyl, or C1-C12 alkyl substituted by one or more of the following: phenyl; carboxyl or a functional derivative thereof; alkoxy, alkylthio, or mono- or dialkylamino, R2 is hydrogen, C3-C12 alkenyl, C1-C12 alkyl or C2-C6 alkylcarbonyl; and D is hydrogen, halogen, nitro or cyano provided that when A is CF3, B is chlorine, and D is halogen, nitro, or cyano, C is not (a), a C1-C4 alkoxy group, a-; COOR7 group wherein R is hydrogen, a cation, or a C1-C4 alkyl group; or (b) an CH3 -OCHCOOR' group wherein R7 is hydrogen, a cation, or a C1-C4 alkyl group.
Processes for their preparation and compositions containing them.
式中的除草剂苯氧基吡啶化合物
其中A和B各自为氢、卤素或CF2H-、CF2CI-或CF3,条件是A和B中至少有一个为卤代甲基,C为羧基或其官能衍生物,或卤素或OR1、SR1或-NR1R2,其中R1为C3-C12烯基、C1-C12烷基或被下列一种或多种取代的C1-C12烷基:R2 是氢、C3-C12 烯基、C1-C12 烷基或 C2-C6 烷基羰基;和 D 是氢、卤素、硝基或氰基,条件是当 A 是 CF3、B 是氯和 D 是卤素、硝基或氰基时,C 不是 (a)、C1-C4 烷氧基、a-; COOR7 基团(其中 R 是氢、阳离子或 C1-C4 烷基);或 (b) CH3 -OCHCOOR' 基团(其中 R7 是氢、阳离子或 C1-C4 烷基)。
它们的制备方法和含有它们的组合物。