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.
本发明揭示了新型的式I的2-烷基-5-烷基磺酰基-4,6-二卤代
嘧啶,其中R1和R2各自独立地为直链或支链C1-C5烷基,Y和Y1各自为
氯、
氟或
溴。式(I)化合物可以通过将2-烷基-4,6-二
羟基嘧啶在
氯化、
溴化和/或
氟化剂的存在下与二烷基亚砜反应,然后氧化所得化合物来获得。式(I)化合物是有价值的中间体,适用于制造反应
染料等领域。