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Molecules 2009, 14(5), 1915-1926; doi:10.3390/molecules14051915
Communication

Silica Bonded S-Sulfonic Acid: A Recyclable Catalyst for the Synthesis of Quinoxalines at Room Temperature

* ,  and
Department of Chemistry, Faculty of Sciences, Persian Gulf University, Bushehr 75169, Iran
* Author to whom correspondence should be addressed.
Received: 26 March 2009 / Revised: 27 April 2009 / Accepted: 30 April 2009 / Published: 22 May 2009
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Abstract

The reaction of 3-mercaptopropylsilica (MPS) and chlorosulfonic acid in chloroform afforded silica bonded S-sulfonic acid (SBSSA), which was used as a catalyst for the room temperature synthesis of quinoxaline derivatives from 1,2-diamino compounds and 1,2-dicarbonyl compounds. The catalyst could be recycled and reused several times without any loss of efficiency.
Keywords: silica bonded S-sulfonic acid; quinoxalines; 1; 2-diamino compounds; 1; 2-dicarbonyl compounds silica bonded S-sulfonic acid; quinoxalines; 1; 2-diamino compounds; 1; 2-dicarbonyl compounds
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).
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Niknam, K.; Saberi, D.; Mohagheghnejad, M. Silica Bonded S-Sulfonic Acid: A Recyclable Catalyst for the Synthesis of Quinoxalines at Room Temperature. Molecules 2009, 14, 1915-1926.

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