2-Alkyl-5-alkylsulfonyl-4,6-dihalopyrimidines and the production

Details 2-Alkyl-5-alkylsulfonyl-4,6-dihalopyrimidines and the production 2-Alkyl-5-alkylsulfonyl-4,6-dihalopyrimidines and the production

1982-09-16

1983-11-01

Gerstl, Robert

Organic compounds -- part of the class 532-570 series

Organic compounds

Nitrogen attached directly or indirectly to the purine ring...

260146D, C07D23954

Patent

active

044131240

ABSTRACT:
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.

REFERENCES:
patent: 4287342 (1981-09-01), Hoegerle

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