ETUDE DE L'ISOMERIE DE N-(OXO-2-(1H)-PYRIDYL-6)AMINOMETHYLENE CYANACETATES, ET DE LEUR CYCLISATION EN PYRIDOPYRIMIDINES

Article abstract of DOI:10.1016/S0040-4020(01)87319-1

The condensation of substituted 6-amino-2-(1H)-pyridones with ethylethoxymethylene cyanoacetate gives rise not only to the two corresponding olefines, as expected, but also to a third tautomeric fused form.The equilibrium between these 3 forms in solution