2-substituted 6-phenyl-benzoic acid derivatives, their preparation and their use as herbicides
申请人:SUMITOMO CHEMICAL COMPANY, LIMITED
公开号:EP0593252A1
公开(公告)日:1994-04-20
A herbicidally active biphenyl derivative and composition containint it is represented by the formula (I)
wherein R¹ is a hydrogen atom or a group represented by the formula
(wherein each of R⁴ and R⁵, which may be the same or different, is a hydrogen atom, a C₁-C₆ alkyl group, a C₃-C₈ cycloalkyl group, or a phenyl group optionally substituted with at least one moiety selected from C₁-C₆ alkyl groups, halogen atoms and C₁-C₆ alkoxy groups, or a benzyl group optionally substituted with at least one moiety selected from C₁-C₆ alkyl groups, halogen atoms and C₁-C₆ alkoxy groups, or R⁴ and R⁵ are bonded together at their ends to form a C₄-C₆ alkylene group optionally substituted with at least one C₁-C₆ alkyl group; or R⁴ and R⁵ are bonded together at their ends to form a C₄-C₆ alkylene group containing one or more hetero atom(s) selected from oxygen, sulfur and nitrogen atoms, optionally substituted with at least one C₁-C₆ alkyl group), each of R² and R³, which may be the same or different, is a C₁-C₆ alkyl group, a C₁-C₆ alkoxy group, a C₁-C₆ alkylthio group, a halo C₁-C₆ alkoxy group or a halogen atom, each of X¹, X² and X³, which may be the same or different, is a hydrogen atom, a hydroxyl group, a C₁-C₆ alkyl group, a halo C₁-C₆ alkyl group, a C₁-C₆ alkoxy group, a nitro group, a cyano group or a halogen atom and Y represents an oxygen atom or a sulfur atom; or agriculturally acceptable salt thereof.
一种具有除草活性的联苯衍生物和含有该衍生物的组合物由式 (I) 表示
其中 R¹ 是氢原子或由式(I)表示的基团
(其中 R⁴ 和 R⁵ (可以相同或不同)分别为氢原子、C₁-C₆ 烷基、C₃-C₈ 环烷基或被至少一个选自 C₁-C₆ 烷基、卤素原子和 C₁-C₆ 烷氧基的分子任选取代的苯基、或至少被一个选自 C₁-C₆烷基、卤素原子和 C₁-C₆烷氧基的分子任选取代的苄基,或 R⁴ 和 R⁵ 在其两端键合形成一个 C₄-C₆ 亚烷基,该亚烷基任选被至少一个 C₁-C₆ 烷基取代;或 R⁴ 和 R⁵ 在其末端键合,形成含有一个或多个选自氧、硫和氮原子的杂原子的 C₄-C₆ 亚烷基、R²和 R³(可以相同或不同)是 C₁-C₆ 烷基、C₁-C₆ 烷氧基、C₁-C₆烷硫基、卤代 C₁-C₆烷氧基或卤原子,X¹、X² 和 X³ 中的每一个(可以相同或不同)是氢原子、羟基、C₁-C₆烷基、C₁-C₆烷氧基或卤原子、C₁-C₆烷基、卤代 C₁-C₆烷基、C₁-C₆烷氧基、硝基、氰基或卤素原子,Y 代表氧原子或硫原子;或其农业上可接受的盐。