Bis(triméthylsiloxy)-1,1 butadiène-1,3 et triméthylsilyl-4 butène-2 oate de triméthylsilyle: préparations et réactions avec le benzaldéhyde
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Add time:07/18/2019 Source:sciencedirect.com
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 ZnBr2 in THF to give exclusively γ-substituted product (E configuration) in high yield. The fluoride ion catalyzed reaction affords predominantly α-alkylated compounds.
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