申请人:MAY & BAKER LIMITED
公开号:EP0278742A2
公开(公告)日:1988-08-17
A 2-benzoylcyclic-1,3-dione derivative of the formula:
wherein X represents methylene, oxygen, sulphur or -NR⁴-, Y represents -C(R⁵) (R⁶)- or oxygen, R¹ represents hydrogen or alkyl optionally substituted by halogen or represents cycloalkyl, R² represents hydrogen or R⁷ or R¹ and R² together represent alkylene, R³ represents halogen, hydroxy, carboxy, nitro, cyano or amino or carbamoyl (which may be substituted by one or two alkyl groups) , alkoxycarbonyl, alkanoyl, or alkanoylamino, R, RO, RS, RSO or RSO₂ in which R represents alkyl optionally substituted by halogen, R⁴ represents hydrogen or alkyl or alkoxycarbonyl, R⁵ represents hydrogen or alkyl or alkoxycarbonyl, R⁶ represents hydrogen or alkyl, R⁷ represents alkyl which may be substituted by halogen or alkylthio or by a group (R⁸)n-phenyl-S-, or represents cycloalkyl or tetrahydrothiapyran-3-yl or represents a group (R⁸)n-phenyl- in which R⁸ represents a halogen, hydroxy, carboxy, nitro or cyano, or amino or carbamoyl (which may be substituted by one or two alkyl groups), alkoxycarbonyl or alkanoyl or alkanoylamino or R, RO, RS, RSO or RSO₂ in which R represents alkyl which is optionally substituted by halogen, m is zero or 1 to 5 and n is zero or 1 to 5, provided that when X represents methylene, and Y represents -C(R⁵) (R⁶)- then R¹ and R² do not simultaneously represent hydrogen or alkyl and salts thereof are useful as herbicides.
一种 2-苯甲酰基环-1,3-二酮衍生物,其式如下
其中 X 代表亚甲基、氧、硫或-NR⁴-,Y 代表-C(R⁵) (R⁶)- 或氧,R¹ 代表氢或任选被卤素取代的烷基或代表环烷基,R² 代表氢或 R⁷或 R¹ 和 R² 共同代表亚烷基,R³ 代表卤素、羟基、羧基、硝基、氰基或氨基或氨基甲酰基(可被一个或两个烷基取代)、烷氧基羰基、烷酰基、羧基、硝基、氰基或氨基或氨基甲酰基(可被一个或两个烷基取代)、R、RO、RS、RSO 或 RSO₂,其中 R 代表任选被卤素取代的烷基,R⁴ 代表氢或烷基或烷氧羰基,R⁵ 代表氢或烷基或烷氧羰基,R⁶ 代表氢或烷基、R⁷ 代表可被卤素或烷硫基或基团 (R⁸)n-phenyl-S- 取代的烷基,或代表环烷基或四氢噻喃-3-基,或代表基团 (R⁸)n-phenyl- 其中 R⁸ 代表卤素、羟基、羧基、硝基或氰基,或氨基或氨基甲酰基(可被一个或两个烷基取代)、烷氧基羰基或烷酰基或烷酰氨基或 R、RO、RS、RSO 或 RSO₂,其中 R 代表任选被卤素取代的烷基,m 为零或 1 至 5,n 为零或 1 至 5,条件是当 X 代表亚甲基,Y 代表-C(R⁵) (R⁶)-时,R¹ 和 R² 不同时代表氢或烷基,其盐可用作除草剂。