Azole Series. III. Reactions of 2-Acylamino-2-cyanoacetamides leading to 5-Aminooxazole-4-carboxamides and to Oxazolo [5, 4-d] pyrimidines

Abstract

A series of 5-aminooxazole-4-carboxamides were obtained from 2-acylamino-2-cyano-acetamides by influence of hydrogen chloride. From these products syntheses of the corresponding oxazolo [5, 4-d] pyrimidines were performed by the methods through 5-ethoxymethyleneaminooxazole-4-carboxamides as intermediates.