申请人:Ciba-Geigy Corporation
公开号:US04413124A1
公开(公告)日:1983-11-01
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.
本发明公开了新型的2-烷基-5-烷基磺酰基-4,6-二卤代嘧啶的化合物,其化学式为I式:其中R1和R2各自独立地为直链或支链的C1-C5烷基,Y和Y1各自为氯、氟或溴。可以通过将2-烷基-4,6-二羟基嘧啶与一种氯化、溴化和/或氟化试剂在二烷基亚砜的存在下反应,然后氧化所得的化合物来获得式(I)化合物。式(I)化合物是有价值的中间体,适用于制造反应染料等。