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Phosphorus, Sulfur, and Silicon and the Related Elements Volume 41, 1989 - Issue 3-4
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Mechanisms of Ring Reactions

A General Hypothesis for the Mechanism of the Wittig Reaction

William E. McEwen Department of Chemistry, University of Massachusetts, Amherst, Massachusetts, 01003, U.S.A.
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William J. Ward Department of Chemistry, University of Massachusetts, Amherst, Massachusetts, 01003, U.S.A.
Pages 393-398 | Published online: 04 Oct 2006
 
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Abstract

Arguments are presented that an ionic mechanism is operative in the Wittig reaction when a metal ion is a part of the transition state leading to oxaphosphetane formation but that formation of a spin paired diradical precedes oxaphosphetane formation in other cases.

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