Table of Contents
Organic Chemistry International
Volume 2011 (2011), Article ID 497852, 3 pages
Research Article

Organic Solid Acid/NaNO2: An Efficient System for the Oxidation of Urazoles and Bis-Urazoles under Mild and Heterogeneous Conditions

1School of Pharmacy, Hamedan University of Medical Sciences, Hamedan 65178, Iran
2Faculty of Chemistry, Bu-Ali Sina University, Hamedan 65174, Iran
3Department of Chemistry, Faculty of Sciences, Payame Noor University, Hamedan 65417, Iran
4Organic Polymer Chemistry Research Laboratory, College of Chemistry, Isfahan University of Technology, Isfahan 51167, Iran

Received 12 October 2011; Revised 25 November 2011; Accepted 26 November 2011

Academic Editor: Dipakranjan Mal

Copyright © 2011 Gholamabbas Chehardoli 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.


Various organic solid acids/NaNO2 were used as effective oxidizing agents for the oxidation of urazoles and bis-urazoles to their corresponding triazolinediones under mild and heterogeneous conditions at room temperature with good-to-excellent yields.