申请人:May & Baker Limited
公开号:US04067723A1
公开(公告)日:1978-01-10
Pyridazine derivatives of the formula: ##STR1## wherein R.sup.1 represents a fluorine, chlorine, bromine or iodine atom or an alkyl, alkoxy, alkylthio, alkylsulphonyl, nitro, trifluoromethyl, cyano, alkoxycarbonyl, carboxy, aminocarbonyl, amino, monoalkylamino or dialkylamino group, R.sup.2 represents a hydrogen atom or an alkyl group, R.sup.3 represents a hydrogen, fluorine, chlorine or bromine atom or an alkyl, methoxy, ethoxy or hydroxy group, or R.sup.2 and R.sup.3 together represent an oxygen atom or a hydroxyimino group, R.sup.4 represents a hydrogen atom or an alkyl group and n represents zero or an integer from 1 to 5 inclusive, are new compounds useful as herbicides.
Pyridazine衍生物的化学式如下:##STR1## 其中R.sup.1代表氟、氯、溴或碘原子或烷基、烷氧基、烷硫基、烷磺酰基、硝基、三氟甲基、氰基、烷氧羰基、羧基、氨基羰基、氨基、单烷基氨基或双烷基氨基基团,R.sup.2代表氢原子或烷基,R.sup.3代表氢、氟、氯或溴原子或烷基、甲氧基、乙氧基或羟基,或R.sup.2和R.sup.3共同代表氧原子或羟亚胺基,R.sup.4代表氢原子或烷基,n表示零或从1到5的整数,这些新化合物可用作除草剂。