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Synlett 2004(3): 445-448
DOI: 10.1055/s-2004-815408
DOI: 10.1055/s-2004-815408
LETTER
© Georg Thieme Verlag Stuttgart · New York
Direct Formation of Benzoins from Diarylmethanones via a Rearrangement Reaction Promoted by Samarium Metal in DMF
Further Information
Received
13 November 2003
Publication Date:
12 January 2004 (online)
Publication History
Publication Date:
12 January 2004 (online)
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Abstract
Diarylmethanones react readily with DMF when promoted by samarium metal in DMF with TMSCl or iodine as an activator, to afford benzoins in good to excellent yields via rearrangement of aryl groups. As for asymmetric diarylmethanones, products resulting from the migration of either aryl group were obtained, where the migration of aryl groups shows certain priority.
Key words
samarium - DMF - diarylmethanone - rearrangement reaction - benzoin - benzil
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