The phenyldimethylsilyl-cuprate reagent reacts with secondary allyl acetates stereospecifically anti, and with secondary and tertiary allyl urethanes stereospecifically syn; these reactions can be used to synthesise either enantiomer of an optically active allylsilane from a single enantiomer of an optically active allyl alcohol.
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Fleming et al. (1986) studied this question.