Journal
CHINESE CHEMICAL LETTERS
Volume 23, Issue 7, Pages 781-784Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.cclet.2012.05.003
Keywords
Biscoumarin; 4-Hydroxycoumarin; Tris(hydrogensulfato)boron; Heterogeneous catalyst
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alpha,alpha '-Benzylidene bis(4-hydroxycoumarin) derivatives were readily prepared in a few minutes with good yields through the reaction of an aromatic aldehyde and 4-hydroxycoumarin in aqueous media in the presence of catalytic tris(hydrogensulfato) boron [B(HSO4)(3)]. (C) 2012 Zahed Karimi-Jaberi. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.
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