An efficient catalytic synthesis of 4-aryl-3,4-dihydropyrimidine-2(1H)-one derivatives using
copper (II), iron (III) and zinc (II) exchanged montmorillonite clays as a catalyst is described. The desired
products were obtained in good yields.
Keywords: Dihydropyrimidinones, Biginelli reaction, activated montmorillonite, heterogeneous catalysts, green chemistry,
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