Table of Contents
ISRN Organic Chemistry
Volume 2011, Article ID 604348, 4 pages
Research Article

Bismuth (III) Salts Promoted and Ionic Liquid Assisted an Efficient and Environmentally Benign One-Pot Synthesis of 1,5-Benzodiazepine Derivatives

1Department of Chemistry, National Taiwan University, 106 Taipei, Taiwan
2Department of Chemistry, C. K. Thakur Research Centre, Navi Mumbai 410206, India

Received 17 January 2011; Accepted 28 February 2011

Academic Editor: B. Das

Copyright © 2011 Atul Chaskar 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.


1,5-Benzodiazepine derivatives were synthesized by the condensation reactions of o-phenylenediamine and ketones catalyzed by bismuth (III) salts under mild conditions. This method is easy, efficient, environment and eco-friendly, free of toxic catalysts, and gives good to excellent yields of 1, 5-benzodiazepines.