Abstract
Abstract3‐Substituted 2(1H)‐pyridones are produced from reaction of 4‐(4‐morpholino)‐3‐pentenone 1 with each of the following carbon acids: cyanoacetamide, malononitrile, cyanothioacetamide, acetylacetamide, benzoyl‐acetonitrile. Reaction of ethyl 3‐(4‐morpholino)‐2‐butenoate 2 with cyanoacetamide gives the corresponding hydroxypyridone. Pyrimidines are formed by reaction of 1 and of 2 with benzamidine and with S‐benzylthio‐urea; in the last case, the eliminated morpholine displaces the benzylthio group to give the final product.
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