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Active malonic esters condense with 2-pyridylacetonitrile giving 1-cyano-3-substituted 2-hydroxyquinolizin-4-ones. Catalytic hydrogenation of the resulting products led to the corresponding 1-cyano-3-substituted-2-hydroxy-6.7.8.9-tetrahydroquinolizin-4-ones. On the other hand, condensation of the active malonic esters with beta-aminocrotononitrile afforded 5-cyano-3-substituted-4-hydroxy-6-methylpyridine-2-ones. The IR and NMR data are reported.
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