Journal
APPLIED ORGANOMETALLIC CHEMISTRY
Volume 26, Issue 2, Pages 56-61Publisher
WILEY-BLACKWELL
DOI: 10.1002/aoc.1866
Keywords
ruthenium; one-pot synthesis; dihydropyrano[3; 2-c]chromene; tetrahydrobenzo[b]pyran
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Funding
- Research Council of University of Guilan
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A number of ruthenium complexes were prepared and their catalytic activities in three-component one-pot condensation of aldehydes, malononitrile and 4-hydroxycoumarin or dimedone was considered to afford dihydropyrano[3,2-c]chromenes and tetrahydrobenzo[b]pyran derivatives under optimum reaction conditions. We found that a catalytic amount of RuBr2(PPh3)4 efficiently promotes the reaction in a short time (315 min) and with high yield (7588%). Copyright (C) 2012 John Wiley & Sons, Ltd.
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