申请人:Ciba Geigy Corporation
公开号:US04560402A1
公开(公告)日:1985-12-24
The invention relates to novel 2,4-diamino-5-alkylsulfinyl- or -alkylsulfonyl-6-halopyrimidines of the formula ##STR1## wherein n is 1 or 2, R.sub.1 is C.sub.1 -C.sub.4 alkyl, each of R.sub.2 and R.sub.3 is hydrogen, C.sub.1 -C.sub.6 alkyl or C.sub.3 -C.sub.6 cycloalkyl and X is chlorine, bromine or fluorine. These compounds have selective herbicidal action and inhibit plant growth. They are obtained by amination of halogen-substituted or hydroxyl-substituted amino-5-alkylsulfinyl- and -sulfonylpyrimidines. The invention also relates to the production of 5-sulfinylpyrimidine intermediates.
本发明涉及一种新型的2,4-二氨基-5-烷基亚磺酰基或烷基磺酰基-6-卤代嘧啶,其化学式为##STR1## 其中n为1或2,R1为C1-C4烷基,R2和R3中的每一个为氢、C1-C6烷基或C3-C6环烷基,X为氯、溴或氟。这些化合物具有选择性除草作用和抑制植物生长的作用。它们是通过卤代或羟基取代的氨基-5-烷基亚磺酰基和磺酰基嘧啶的氨化反应得到的。本发明还涉及5-亚磺酰基嘧啶中间体的生产。