Diphenyl ether derivative, herbicidal composition containing the derivative as active ingredient, and process for producing the derivative
申请人:MITSUBISHI KASEI CORPORATION
公开号:EP0403938A3
公开(公告)日:1991-11-27
This invention provides a diphenyl ether derivative represented by the formula (I):
wherein X¹ represents a halogen atom or a C₁-C₃ haloalkyl group; X² and X³ represent independently a hydrogen atom, a halogen atom, a trifluoromethyl group, a nitro group or a cyano group; Y represents a nitro group, a cyano group, a halogen atom, a C₁-C₃ haloalkyl group or a hydrogen atom; A represents a direct bond, a group represented by the formula:
-CO₂(CH(R¹)-
wherein R¹ represents a hydrogen atom or a C₁-C₃ alkyl group, a group represented by the formula:
-C(R²) = NOCH(R³)-
wherein R² represents a hydrogen atom, a C₁-C₄ alkyl group which may be substituted with a C₁-C₄ alkoxy group, C₁-C₄ alkylthio group or halogen atom, or a C₁-C₃ alkoxy group, and R³ represents a hydrogen atom or a C₁-C₃ alkyl group, or a group represented by the formula:
-C(=NOR⁴)OCH(R³)-
wherein R³ is the same as defined above and R⁴ represents a C₁-C₃ alkyl group; and B represents a group represented by the formula: wherein R⁵ represents a halogen atom; a hydroxyl group; an acyloxy group having up to 6 carbon atoms which may be substituted with a halogen atom, C₁-C₆ alkoxy group, C₂-C₇ alkoxycarbonyl group, aryl group which may be substituted with 1 to 3 halogen atoms and/or 1 to 3 C₁-C₃ alkyl groups or aryloxy group which may be substituted with 1 to 3 halogen atoms and/or 1 to 3 C₁-C₃ alkyl groups; a C₄-C₉ cycloalkylcarbonyloxy group; a benzoyloxy group which may be substituted with a halogen atom, C₁-C₄ alkyl group or C₁-C₄ alkoxy group; a C₂-C₇ alkoxycarbonyloxy group; a C₁-C₄ alkylsufonyloxy group; or a carbamoyloxy group which may be substituted with a C₁-C₄ alkyl group and/or C₁-C₄ alkoxy group. A process for preparing the diphenyl ether derivative and a herbicidal composition containing the diphenyl ether derivative as active ingredient are also described. The compounds of this invention show a wide herbicidal spectrum against both annual and perennial weeds and also have a high degree of safety or harmlessness to crops.
本发明提供了一种二苯醚衍生物,其表示为式(I):其中X¹表示卤素原子或C₁-C₃卤代烷基;X²和X³分别表示氢原子、卤素原子、三氟甲基基团、硝基基团或氰基基团;Y表示硝基基团、氰基基团、卤素原子、C₁-C₃卤代烷基或氢原子;A表示直接键,或者由式表示的基团:-CO₂(CH(R¹)-其中R¹表示氢原子或C₁-C₃烷基;或由式表示的基团:-C(R²)= NOCH(R³)-其中R²表示氢原子、C₁-C₄烷基,其可以用C₁-C₄烷氧基基团、C₁-C₄烷硫基基团或卤素原子取代,或C₁-C₃烷氧基基团,R³表示氢原子或C₁-C₃烷基;或者由式表示的基团:-C(=NOR⁴)OCH(R³)-其中R³与上述定义相同,R⁴表示C₁-C₃烷基;B表示由式表示的基团:其中R⁵表示卤素原子;羟基;具有最多6个碳原子的酰氧基基团,其可以用卤素原子、C₁-C₆烷氧基基团、C₂-C₇烷氧羰基基团、芳基基团(其可以用1至3个卤素原子和/或1至3个C₁-C₃烷基取代)或芳氧基基团(其可以用1至3个卤素原子和/或1至3个C₁-C₃烷基取代)取代;C₄-C₉环烷基羧酸酯基团;苯甲酰氧基基团,其可以用卤素原子、C₁-C₄烷基或C₁-C₄烷氧基基团取代;C₂-C₇烷氧羰酸酯基团;C₁-C₄烷磺酰氧基基团;或者可用C₁-C₄烷基和/或C₁-C₄烷氧基取代的氨基甲酰氧基基团。还描述了制备二苯醚衍生物的过程和包含二苯醚衍生物作为活性成分的除草剂组合物。本发明的化合物对一年生和多年生杂草均具有广泛的除草谱,并且对作物具有高度的安全性或无害性。