Chemistry Letters
Online ISSN : 1348-0715
Print ISSN : 0366-7022
ISSN-L : 0366-7022
Pd-Catalyzed Cycloaddition of Vinylcyclopentenes with Trimethylenemethane. Substituent Effect on [4+3] vs [3+2] Selectivity
Barry M. TrostShoko Yamazaki
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1994 Volume 23 Issue 12 Pages 2245-2248

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Abstract

The Pd-catalyzed reaction of 2-vinylcyclopentenes 2 and 3 with trimethylenemethane gave [4+3] and [3+2] cycloadducts. Derivatization of 2-vinylcyclopentenones with bulky ketal substituents served to enhance seven-membered ring formation.

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© 1994 The Chemical Society of Japan
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