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Synthesis 2009(1): 85-90
DOI: 10.1055/s-0028-1083261
DOI: 10.1055/s-0028-1083261
PAPER
© Georg Thieme Verlag
Stuttgart ˙ New York
Synthesis of Benzo[b]furans by Palladium-NHC Catalyzed Ring Closure of o-Bromobenzyl Ketones
Further Information
Received
20 October 2008
Publication Date:
12 December 2008 (online)
Publication History
Publication Date:
12 December 2008 (online)
Abstract
The palladium-catalyzed ring closure of aryl o-bromobenzyl ketones, easily accessible from aromatic aldehydes and 2-bromobenzyl bromide, provides a straightforward route to 2-arylbenzofurans. A study of the ring closure revealed that a heterocyclic carbene based catalyst provides the best results.
Key words
ring closure - palladium - catalysis - benzofurans
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References
New address: J. Faragó, Gedeon Richter Chemical Works, Gyömröi út 19-21, Budapest, Hungary.
2New address: A. Kotschy, Servier Research Institute of Medicinal Chemistry, Záhony u. 7, 1031 Budapest, Hungary.