Journal
BULLETIN OF THE KOREAN CHEMICAL SOCIETY
Volume 41, Issue 7, Pages 709-718Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/bkcs.12058
Keywords
Bismuth; Catalysis; Pyranocoumarin; Furocoumarin; Regioselectivity
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An efficient method for the bismuth-catalyzed regioselective synthesis of pyranocoumarins and furocoumarins has been developed from the reaction of 4-hydroxycoumarins with propargyl alcohols. The reaction proceeds through sequential propargylation and intramolecular cyclization reactions catalyzed by bismuth(III) triflate.
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