Organic compounds -- part of the class 532-570 series – Organic compounds – Nitrogen attached directly or indirectly to the purine ring...
Patent
1981-12-10
1983-10-25
Gerstl, Robert
Organic compounds -- part of the class 532-570 series
Organic compounds
Nitrogen attached directly or indirectly to the purine ring...
8663, C07D23940
Patent
active
044120745
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
Chemical Abstracts, Reg. #25096-70-2 (1975).
Hoegerle Karl
Ohnemus Kurt
Ciba-Geigy Corporation
Gerstl Robert
Kolodny Joseph G.
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