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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

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Received: 26 March 2009; in revised form: 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 which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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MDPI and ACS Style

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.

AMA Style

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(5):1915-1926.

Chicago/Turabian Style

Niknam, Khodabakhsh; Saberi, Dariush; Mohagheghnejad, Maleki. 2009. "Silica Bonded S-Sulfonic Acid: A Recyclable Catalyst for the Synthesis of Quinoxalines at Room Temperature." Molecules 14, no. 5: 1915-1926.


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