申请人:Bayer Aktiengesellschaft
公开号:US04877443A1
公开(公告)日:1989-10-31
Herbicidally active 2,4-diamino-6-haloalkylpyrimidines of the formula ##STR1## in which R.sup.1 and R.sup.3, independently of one another, represent hydrogen or alkyl, R.sup.2 and R.sup.4, independently of one another, represent hydrogen, alkyl which is optionally substituted by halogen, cyano, alkoxy, alkylthio or by cyclopropyl, represent cycloalkyl, alkenyl which is optionally substituted by halogen, or alkinyl, and R.sup.5 represents alkyl which is substituted by halogen, with the proviso that R.sup.1, R.sup.2, R.sup.3 and R.sup.4 do not simultaneously represent hydrogen when R.sup.5 represents trichloromethyl, and with the provisio that R.sup.1 and R.sup.2 do not simultaneously represent hydrogen when R.sup.4 represents alkyl which is substituted by alkoxy or alkylthio.
2,4-二氨基-6-卤代烷基嘧啶具有除草活性的化合物的结构式如下:##STR1## 其中R.sup.1和R.sup.3分别独立地代表氢或烷基,R.sup.2和R.sup.4分别独立地代表氢,烷基,其可以被卤素,氰基,烷氧基,烷硫基或环丙基取代,也可以代表环烷基,烯基,其可以被卤素取代,或炔基,R.sup.5代表被卤素取代的烷基,但R.sup.1,R.sup.2,R.sup.3和R.sup.4不可同时代表氢,当R.sup.5代表三氯甲基时,且R.sup.1和R.sup.2不可同时代表氢,当R.sup.4代表被烷氧基或烷硫基取代的烷基。