申请人:Ciba-Geigy Corporation
公开号:US04412074A1
公开(公告)日:1983-10-25
The invention discloses novel 2-alkyl-5-alkylsulfonyl-4,6-dihalopyrimidines of the formula I ##STR1## wherein each of R.sup.1 and R.sup.2 independently is straight chain or branched chain C.sub.1 -C.sub.5 alkyl, and each of Y and Y.sup.1 is chlorine, fluorine or bromine. The compounds of the formula (I) can be obtained e.g. by reacting a 2-alkyl-4,6-dihydroxypyrimidine, in the presence of a chlorinating, brominating and/or fluorinating agent, with a dialkyl sulfoxide, and then oxidizing the compound obtained. The compounds of the formula (I) are valuable intermediates which are suitable e.g. for the manufacture of reactive dyes.
该发明揭示了新型的2-烷基-5-烷基磺酰基-4,6-二卤代嘧啶化合物,其化学式为I ##STR1## 其中R.sup.1和R.sup.2各自独立地是直链或支链的C.sub.1-C.sub.5烷基,而Y和Y.sup.1各自是氯、氟或溴。化合物(I)可以通过在氯化、溴化和/或氟化剂的存在下,将2-烷基-4,6-二羟基嘧啶与双烷基亚砜反应,然后氧化所得化合物而获得。化合物(I)是有价值的中间体,适用于制造反应染料等。