Journal
CHINESE CHEMICAL LETTERS
Volume 26, Issue 1, Pages 26-30Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.cclet.2014.10.009
Keywords
Bronsted acid; Pyrano[4,3-b]pyran; 4-Hydroxy-6-methylpyran-2-one; Three-component reaction; One-pot condensation
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Funding
- Research House of Professor Reza, Education Guilan, Rasht, Iran
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4-(Succinimido)-1-butane sulfonic acid as an efficient and reusable Bronsted acid catalyzed the synthesis of pyrano[4,3-b]pyran derivatives under solvent-free conditions. The catalyst can be prepared by mixing succinimide and 1,4-butanesultone that is more simple and safer than the preparation of succinimide sulfonic acid. This method has the advantages of high yield, clean reaction, simple methodology and short reaction time. The catalyst could be recycled without significant loss of activity. (C) 2014 Nader Ghaffari Khaligh. Published by Elsevier B.V. on behalf of Chinese Chemical Society and Institute of Materia Medica, Chinese Academy of Medical Sciences. All rights reserved.
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