Tetrahedron

Reactions de wittig-horner et de transesterification en une operation par activation anionique de liaisons CH et OH en milieu heterogene carbonate de potassium/ …

Z Mouloungui, R Elmestour, M Delmas, A Gaset

Index: Mouloungui, Z.; Elmestour, R.; Delmas, M.; Gaset, A. Tetrahedron, 1992 , vol. 48, # 7 p. 1219 - 1232

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Citation Number: 13

Abstract

The Wittig-Horner reaction carried out in various alcohols is accompanied by transesterification of the alkyl radical of the α, β-ethylenic ester formed. The occurrence of these two reactions in the same reaction medium is affected by the behavior of: i) the alcohol (solvent and reagent), ii) potassium carbonate (reagent and catalyst). The propensity for the two reactions to occur was found to depend on the polarity of the alcohol. Protic alcohols ...