I. Ukrainets, N. L. Bereznyakova, V. Parshikov
May 1, 2007
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0
Influential Citations
4
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Journal
Chemistry of Heterocyclic Compounds
Abstract
Hydration of ethyl 1-R-4-dicyanomethyl-2-oxo-1,2-dihydroquinoline-3-carboxylate gives the corresponding substituted cyanoacetamides which are readily and quantitatively cyclized to 6-R-5-hydroxy-2,4-dioxo-2,3,4,6-tetrahydrobenzo[c][2,7]naphthyridine-1-carbonitriles in the presence of aqueous base.