A. Krauze, G. Duburs
Apr 1, 1999
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Journal
Chemistry of Heterocyclic Compounds
Abstract
Condensation of ethyl benzylidenecyanoacetate with thiocarbamoylacetamide in the presence of an equimolar amount of piperidine produces piperidinium 5-carbamoyl-3-cyano-2-oxo-4-phenyl-3,4-dihydropyridine-6(1H)-thiolate, which is then used in synthesis of the corresponding 6-alkylthiosubstituted 3,4-dihydropyridin-2(1H)-ones.