Journal
TETRAHEDRON LETTERS
Volume 55, Issue 28, Pages 3753-3755Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tetlet.2014.05.072
Keywords
Aryl glyoxal; Malononitrile; 4-Hydroxycoumarin
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Funding
- Yasouj University, Yasouj, Iran
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A new library of pyrano[c]chromenes containing an aroyl group has been synthesized by a novel multicomponent process involving the reaction of various aryl glyoxals with 4-hydroxycoumarin and malononitrile. The reactions were catalyzed efficiently by ammonium dihydrogen phosphate to yield the desired products in good to excellent yields. (C) 2014 Elsevier Ltd. All rights reserved.
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