Steric and electronic effects of substit
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David W. Allen; Phillip Heatley; Barrie G. Hutley; Malcolm T.J. Mellor
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Article
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1974
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Elsevier Science
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French
β 170 KB
The Wittig reaction between a phosphonium salt and a carbonyl compound in the presence of alkoxide ion in protic solvents may occur by two competing mechanistic courses (see Scheme).