Phenyl derivatives of 2-pyrone

Several phenyl dichloropentadienyl ketones containing a hydroxy or methoxy group in the benzene ring as well as a number of 2-pyrones based on them were synthesized. The possibility of the conversion of the latter to the corresponding 2-pyridones on heating them with ammonium salts is demonstrated.See [2] for communication III.Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 5, pp. 579–581, May, 1971