Y. Volovenko, G. Dubinina
Sep 1, 1999
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Journal
Chemistry of Heterocyclic Compounds
Abstract
Reaction of 2,3-dichloro-5,6-dicyanopyrazine with α-azahetarylacetonitriles gives α-(3-chloro-5,6-dicyanopyrazin-2-yl)-α-(2-azahetaryl)acetonitriles. Subsequent heating in pyridine causes an intramolecular cyclization to yield condensed pyrrolo[b]pyrazines.