申请人:NISSAN CHEMICAL INDUSTRIES, LIMITED
公开号:EP0563384A1
公开(公告)日:1993-10-06
Compounds represented by general formula (1), a process for the production thereof, a method of killing weeds or controlling their growth therewith, and a herbicide containing the same as the active ingredient. In formula (1), R¹ represents H, C₁ to C₃ alkyl or C₁ to C₃ haloalkyl; R² represents C₁ to C₆ haloalkyl; R³ represents H, C₁ to C₆ alkyl, C₁ to C₆ haloalkly, CH₂OH, halogen or nitro; R⁴ represents H or halogen; R⁵ represents H, halogen, nitro or cyano; X represents O or S; and Da and Db represent each independently H, C₁ to C₈ alkyl, C₁ to C₆ haloalkyl, C₃ to C₈ cycloalkyl, C₂ to C₈ alkenyl, etc., provided that the cases where both of Da and Db represent H, etc., are excluded. These compounds scarcely inflict chemical injury on crop and have a high herbicidal effect on various weeds even in small doses.
通式(1)所代表的化合物、其生产工艺、杀灭杂草或控制杂草生长的方法,以及含有通式(1)作为活性成分的除草剂。在式(1)中,R¹代表H、C₁~C₃烷基或C₁~C₃卤代烷基;R²代表C₁~C₆卤代烷基;R³代表H、C₁~C₆烷基、C₁~C₆卤代烷基、CH₂OH、卤素或硝基;R⁴ 代表 H 或卤素;R⁵ 代表 H、卤素、硝基或氰基;X 代表 O 或 S;Da 和 Db 各自独立地代表 H、C₁ 至 C₈ 烷基、C₁ 至 C₆ 卤代烷基、C₃ 至 C₈ 环烷基、C₂ 至 C₈ 烯基等。,如果 Da 和 Db 都代表 H 等,则排除在外。这些化合物几乎不会对作物造成化学伤害,即使剂量很小,对各种杂草也有很强的除草效果。