A pyrazole derivative represented by the general formula (1a) or (1b):
wherein
R1 represents a hydrogen atom or a pesticidally acceptable protecting group; R2 and R3 represent a phenyl, 1-naphthyl or 2-naphthyl group, or a 5-6 membered heterocyclic ring and the like;
R4 represents a hydrogen or halogen atom, or a alkyl, alkoxy or alkylthio group; and a herbicidal composition containing the pyrazole derivative.
通式 (1a) 或 (1b) 所代表的
吡唑衍
生物:
其中
R1 代表氢原子或农药学上可接受的保护基团; R2 和 R3 代表苯基、1-
萘基或 2-
萘基,或 5-6 位杂环等;
R4 代表氢原子或卤素原子,或烷基、烷氧基或烷
硫基;以及含有
吡唑衍
生物的除草组合物。