Table of Contents
ISRN Organic Chemistry
Volume 2012 (2012), Article ID 474626, 4 pages
http://dx.doi.org/10.5402/2012/474626
Research Article

Synthesis of 3,4-Dihydropyrimidin-2(1H)-Ones and Their Corresponding 2(1H)Thiones Using Trichloroacetic Acid as a Catalyst under Solvent-Free Conditions

Department of Chemistry, Firoozabad Branch, Islamic Azad University, P.O. Box 74715-117, Firoozabad, Fars, Iran

Received 3 August 2012; Accepted 8 October 2012

Academic Editors: D.-M. Du and G. K. Patra

Copyright © 2012 Zahed Karimi-Jaberi and Mohammad Sadegh Moaddeli. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Trichloroacetic acid was found to be a convenient catalyst for the synthesis of 3,4-dihydropyrimidin-2-(1H)-ones and their corresponding 2(1H)-thiones through a one-pot three-component reaction of aldehydes, alkyl acetoacetate, and urea or thiourea at 70°C under solvent-free conditions.