Chemistry of Heterocyclic Compounds p. 347 - 352 (1989)
Update date:2022-08-03
Topics:
Khripak, S. M.
Yakubets, V. I.
Migalina, Yu. V.
Koz'min, A. S.
Zefirov, N. S.
Heterocyclization of 5,6-disubstituted 2-allylthio(oxy)-4-oxothieno<2,3-d>pyrimidines by treatment with halogens affords thieno<3,2-e>thiazolo<3,2-a>pyrimidine iminium salts.Treatment of these salts with aqueous sodium acetate results in cleavage of the thiazoline ring.
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