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Synthetic Communications
An International Journal for Rapid Communication of Synthetic Organic Chemistry
Volume 37, 2007 - Issue 14
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Original Articles

Simple and Efficient Method for the Synthesis of Benzimidazole Derivatives using Monoammonium Salt of 12‐Tungstophosphoric Acid

B. Y. Giri Lipid Science and Technology Division, Indian Institute of Chemical Technology (CSIR), Hyderabad, India
,
B. L. A. Prabavathi Devi Lipid Science and Technology Division, Indian Institute of Chemical Technology (CSIR), Hyderabad, India
,
K. N. Gangadhar Lipid Science and Technology Division, Indian Institute of Chemical Technology (CSIR), Hyderabad, India
,
K. Vijaya Lakshmi Lipid Science and Technology Division, Indian Institute of Chemical Technology (CSIR), Hyderabad, India
,
R. B. N. Prasad Lipid Science and Technology Division, Indian Institute of Chemical Technology (CSIR), Hyderabad, IndiaCorrespondence[email protected]
,
N. Lingaiah Inorganic and Physical Chemistry Division, Indian Institute of Chemical Technology (CSIR), Hyderabad, India
&
P. S. Sai Prasad Inorganic and Physical Chemistry Division, Indian Institute of Chemical Technology (CSIR), Hyderabad, India
 show all
Pages 2331-2336 | Received 04 Dec 2006, Published online: 11 Jul 2007
 
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Abstract

Benzimidazoles have been synthesized in very good yield from o‐phenylenediamine and aromatic aldehydes in the presence of monoammonium salt of 12‐tungstophosphoric acid [(NH4)H2PW12O40], an efficient heterogeneous catalyst. This catalyst has the advantages of simple workup procedure, water insolubility, and good activity with high yield for the synthesis of benzimidazole derivatives.

Notes

IICT Communication No. 061006.

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