Reaction of 4-(Benzoylaminomethyl)pyridine 1-Oxides with Indan-1, 3-dione in the Presence of Acetic Anhydride

Abstract

4-(Benzoylaminomethyl)pyridine 1-oxides (1) react with indan-1, 3-dione in the presence of acetic anhydride to give 2-(benzoylamino-4-pyridylmethylene)indan-1, 3-diones (4) and 4-benzoylaminomethyl-2-(3-hydroxy-1-oxo-2-indenyl)-pyridines (5) as enol forms. The reaction mechanism is discussed.