4-Alkoxy-3-cyano-2(1H)-pyridones and 5-alkoxyisoxazoles and their aryl substituted and annulated derivatives from acylketene O,S-acetals

Article abstract of DOI:10.1055/s-1995-3974

The title pyridones 2 and 5 and the isoxazoles 3 and 6 are obtained in moderate to good yields by cyclocondensation of the appropriate acylketene O,S-acetals 1 or 4 with cyanoacetamide and hydroxylamine hydrochloride, respectively, in the presence of sodi