1989 年 47 巻 5 号 p. 413-424
Recent developments in the synthesis of 2-pyrone and 2-pyridone derivatives by the reaction of ketene dithioacetals with active methyl or methylene compounds are summarized by major emphasis that is placed on the results obtained in our own laboratory. The reaction of 4-methylthio-2-pyrone or 2-pyridones with various nucleophiles such as amines or active methylene compounds is also described.