Table of Contents
ISRN Organic Chemistry
Volume 2012, Article ID 480989, 8 pages
http://dx.doi.org/10.5402/2012/480989
Research Article

An Efficient One-Pot Green Protocol for the Synthesis of 5-Unsubstituted 3,4-Dihydropyrimidin-2(1H)-Ones Using Recyclable Amberlyst 15 DRY as a Heterogeneous Catalyst via Three-Component Biginelli-Like Reaction

Laboratory of Heterocycles, School of Studies in Chemistry & Biochemistry, Vikram University, Ujjain 456010, Madhya Pradesh, India

Received 2 September 2012; Accepted 24 September 2012

Academic Editors: J. M. Campagne and A. Hajra

Copyright © 2012 Srinivasa Rao Jetti et al. 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

An environmentally benign green protocol for the synthesis of 5-unsubstituted 3,4-dihydropyrimidin-2(1H)-ones using Amberlyst 15 DRY as a recyclable catalyst has been developed. The use of resinous, nontoxic, thermally stable, and inexpensive Amberlyst 15 DRY, as a recyclable heterogeneous catalyst, makes the process simple with negligible chemical waste. Among the various solid acid catalysts Amberlyst 15 DRY was found to be the most efficient catalyst with regard to reaction time, yield, and ease of work-up procedure.