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Synthesis 2008(12): 1955-1959
DOI: 10.1055/s-2008-1067093
DOI: 10.1055/s-2008-1067093
PAPER
© Georg Thieme Verlag Stuttgart · New York
Periselectivity in the Cycloaddition Reactions of Pentafulvenes with 3-Oxidopyrylium Betaines: Effect of Substituent on the C-6 Carbon
Further Information
Received
28 November 2007
Publication Date:
16 May 2008 (online)
Publication History
Publication Date:
16 May 2008 (online)
Abstract
Periselectvity in cycloaddition reactions of pentafulvenes with 3-oxidopyrylium betaines is examined. The results of our studies show that depending on the substituent on the C-6 carbon, the reaction may proceed either through the [6+3] or the [3+2] pathway. The results of our investigations with various pentafulvenes are discussed.
Key words
pentafulvenes - oxidopyrylium betaines - cycloaddition - periselectivity
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