Action of amines and carbonyl reagents on 3,5-diphenyl-4-pyrone and its thio analogue

Several N-substituted, 3,5-diphenyl-4-pyridones and 4-thiopyridones were obtained by the action of amines on 3,5,-diphenyl-4-pyrone and its thio analogue. With hydrazine hydrate, the products were 1-amino-3,5-diphenyl-4-pyridone and the corresponding thione. The spectral characteristics ol these pyridones were studied.