Abstract

Synthesis of functionalized 2-pyridone derivatives from thiazolo[3,2-a]pyridine-6-carbohydrazides or tetrahydroimidazo[1,2-a]pyridine-6-carbohydrazides was developed using acetic acid as solvent at 70°C. Various carbohydrazides could be applied to this protocol, and the desired 2-pyridone products were isolated in excellent yields by simple filtration. This method has several additional advantages, such as simple operation, mild reaction conditions, simple work up, easy product isolation, and preparation of potentially bioactive compounds.

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