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Synthesis 2007(11): 1707-1711
DOI: 10.1055/s-2007-966052
DOI: 10.1055/s-2007-966052
PAPER
© Georg Thieme Verlag Stuttgart · New York
Highly Effective Regioselective Method for the Synthesis of Substituted Coumarin- and Quinolone-Annulated Heterocycles Using a Palladium(0)-Catalyzed Reaction
Further Information
Received
7 February 2007
Publication Date:
11 May 2007 (online)
Publication History
Publication Date:
11 May 2007 (online)
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Abstract
The preparation of a variety of tetracyclic ring systems by palladium(0)-catalyzed cyclization of 2-bromobenzyloxy-substituted coumarins and quinolones is described. The process has been found to be a viable method for regioselective synthesis of the corresponding products in very good to excellent yield.
Key words
Heck reaction - palladium(0) catalysis - tetracyclic ring system - regioselectivity
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