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An efficient synthesis of quinazoline and xanthene derivatives using starch sulfate as a biodegradable solid acid catalyst

An efficient synthesis of quinazoline and xanthene derivatives using starch sulfate as a... Starch sulfate as bio-supported solid acid catalyst was applied to synthesis of heterocyclic compounds such as 2,3-dihydroquinazolin-4(1H)-one, 2-substituted-1,2,3,4-tetrahydro-4-quinazolinones, 12-aryl-8,9,10,12-tetrahydrobenzo[a]xanthen-11-one, 1,8-dioxo-octahydroxanthenes, and 5H-dibenzo[b,i]xanthene-5,7,12,14(13H)-tetraone derivatives under thermal solvent-free conditions. In all these synthetic methods, the work-up is simple and the catalyst can be easily separated from the product and reused for several times without any loss of its activity. The present protocol with starch sulfate as an effective catalyst is convincingly superior to the recently reported catalytic methods with respect to reaction times and yields of the obtained products. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Research on Chemical Intermediates Springer Journals

An efficient synthesis of quinazoline and xanthene derivatives using starch sulfate as a biodegradable solid acid catalyst

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References (9)

Publisher
Springer Journals
Copyright
Copyright © 2013 by Springer Science+Business Media Dordrecht
Subject
Chemistry; Catalysis; Physical Chemistry; Inorganic Chemistry
ISSN
0922-6168
eISSN
1568-5675
DOI
10.1007/s11164-013-1223-z
Publisher site
See Article on Publisher Site

Abstract

Starch sulfate as bio-supported solid acid catalyst was applied to synthesis of heterocyclic compounds such as 2,3-dihydroquinazolin-4(1H)-one, 2-substituted-1,2,3,4-tetrahydro-4-quinazolinones, 12-aryl-8,9,10,12-tetrahydrobenzo[a]xanthen-11-one, 1,8-dioxo-octahydroxanthenes, and 5H-dibenzo[b,i]xanthene-5,7,12,14(13H)-tetraone derivatives under thermal solvent-free conditions. In all these synthetic methods, the work-up is simple and the catalyst can be easily separated from the product and reused for several times without any loss of its activity. The present protocol with starch sulfate as an effective catalyst is convincingly superior to the recently reported catalytic methods with respect to reaction times and yields of the obtained products.

Journal

Research on Chemical Intermediates – Springer Journals

Published: May 3, 2013

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