Bis (triméthylsiloxy)-1, 1 butadiène-1, 3 et triméthylsilyl-4 butène-2 oate de triméthylsilyle: préparations et réactions avec le benzaldéhyde

M Bellassoued, R Ennigrou, M Gaudemar

Index: Bellassoued, M.; Ennigrou, R.; Gaudemar, M. Journal of Organometallic Chemistry, 1988 , vol. 338, p. 149 - 158

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Citation Number: 29

Abstract

Abstract The preparations of 4-trimethylsilyl-2-butenoate trimethylsilyl ester and 1, 1-bis (trimethylsiloxy)-1, 3-butadiene are described. The latter silyl derivative reacts with benzaldehyde in the presence of ZnBr 2 in THF to give exclusively γ-substituted product (E configuration) in high yield. The fluoride ion catalyzed reaction affords predominantly α- alkylated compounds.