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E-Journal of Chemistry
Volume 5, Issue 4, Pages 914-917

Chemoselective Hydrogenation of Aromatic Nitro Compounds Using Diammonium Hydrogen Phosphite and Commercial Zinc Dust

K. Anil Kumar, K. S. Shruthi, Nagaraja Naik, and D. Channe Gowda

Department of Studies in Chemistry, University of Mysore, Manasagangothri, Mysore-570006, India

Received 24 March 2008; Accepted 5 June 2008

Copyright © 2008 Hindawi Publishing Corporation. 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.


The aromatic nitro compounds are reduced to their corresponding amines at room temperature in good yields by employing diammonium hydrogen phosphite as hydrogen donor and zinc as catalyst. The hydrogenation is fast and selective in the presence of the other sensitive functionalities such as halogens, -OH, -NH2, -OCH3, -CN, -COCH3, -COOH, -COOR etc. It was observed that, this system is equally competitive with existing methods.