One-Pot Synthesis of Dihydropyrimidinones Using Polyaniline-Bismoclite Complex. A Facile and Reusable Catalyst for the Biginelli Reaction

Abstract

Polyaniline-bismoclite complex was used as an efficient catalyst for the three-component condensation reaction of an aldehyde, β-ketoester, and urea in ethanol to afford the dihydropyrimidinones in excellent yields. Furthermore, after completion of reaction the catalyst could be easily recovered and reused without affecting its activity.