Abstract

ONE-POT SYNTHESIS OF 3, 4-TETRAHYDROPYRIMIDINE-5- CARBOXYLATE USING LANTHANUM (III) CHLORIDE (LACL3.7H2O) AS A CATALYST

C. Murugesan, M. Mohamed Sihabudeen*, and A. Asrar Ahamed

Abstract

A novel, efficient, and eco - friendly method for the synthesis of tetrahydropyrimidine by a one‐pot three-component condensation of aldehydes, ethyl acetoacetate, dimedone and urea or thiourea, in the presence of a catalytic amount of Lanthanum (III) chloride (LaCl3.7H2O) under solvent conditions has been developed. The results showed that this heterogeneous catalyst has high catalytic activity and the desired products were obtained in good yield. After the reaction the catalyst was recovered easily and reused.

Keywords: Lanthanum (III) chlorideone-spot synthesis Multicomponent synthesis 3, 4-tetrahydropyrimidine.