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.
化合物的式子为:##STR1## 其中R.sup.1代表氟、氯、溴或碘原子或烷基、烷氧基、烷硫基、烷基磺酰基、硝基、三氟甲基、氰基、烷氧羰基、羧基、氨基羰基、氨基、单烷基氨基或二烷基氨基基团,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.3一起代表氧原子或羟亚胺基团,R.sup.4代表氢原子或烷基,n代表零或1至5之间的整数。这些化合物是新的除草剂。