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Poly (4-vinylpyridine) and polyaniline as highly effective base catalysts have catalyzed the three-component reaction of an appropriate aldehyde, cyanoacetic acid hydrazide and malononitrile to prepare of the corresponding N-amino-2-pyridone derivatives. These reactions occur in ethanol at reflux or under microwave heating, in the presence of the base catalysts, are inexpensive and easily obtained with consistent activity.

journal of advances in chemistry

Poly (4-vinylpyridine) and polyaniline: As efficient and commercial available basic catalysts for the synthesis of N-amino-2-pyridones under thermal conditions or microwave irradiation