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The enantiodivergent hydroboration reactions of racemic allenylsilane (±)-4 with ( d Ipc) 2 BH and subsequent crotylboration of achiral aldehydes with the product crotylborane (S)-E-5 at −78 °C provide (E)-δ-silyl-anti-homoallylic alcohols 6 in 71–89% yield and with 93–96% ee. Intriguingly, mismatched double asymmetric crotylboration reactions of enantioenriched chiral aldehydes 20...
The enantiodivergent hydroboration reactions of racemic allenylsilane (±)-4 with ( d Ipc) 2 BH and subsequent crotylboration of achiral aldehydes with the product crotylborane (S)-E-5 at −78 °C provide (E)-δ-silyl-anti-homoallylic alcohols 6 in 71–89% yield and with 93–96% ee. Intriguingly, mismatched double asymmetric crotylboration reactions of enantioenriched chiral aldehydes 20...
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