A butenone compound having the general formula I: ##STR1## wherein R.sup.1 represents a pyridyl or thiazolyl group bearing one or more substituents independantly selected from halogen atoms, alkyl, alkoxy, alkylthio, haloalkyl, cyano, alkoxycarbonyl, alkylamino and dialkylamino; R.sup.2 represents a hydrogen atom, an alkyl group or an alkylcarbonyl group; R.sup.3 represents an alkyl group; R.sup.4 represents a haloalkyl group; X represents a sulphur atom or a group of formula N--R.sup.5, wherein R.sup.5 represents a hydrogen atom, an alkyl group or an alkylcarbonyl group; and n is 0 or 1, methods for their preparation and their use in combating pests.
一种具有通式I的
丁酮化合物: ##STR1##其中R.sup.1代表一个
吡啶基或
噻唑基,该基上独立选择一个或多个取代基,所述取代基包括卤素原子,烷基,烷氧基,烷
硫基,卤代烷基,
氰基,烷氧羰基,烷基
氨基和二烷基
氨基; R.sup.2代表氢原子,烷基或烷基羰基; R.sup.3代表烷基; R.sup.4代表卤代烷基; X代表
硫原子或式N--R.sup.5的基团,其中R.sup.5代表氢原子,烷基或烷基羰基; n为0或1,其制备方法和在防治害虫方面的用途。