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Enantioselective synthesis of (E)-delta-stannyl homoallylic alcohols via aldehyde allylboration using alpha-stannylallylboranes generated by allene hydroboration followed by a highly diastereoselective 1,3-boratropic shift.
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ABSTRACT:
SUBMITTER: Chen M
PROVIDER: S-EPMC2890212 | biostudies-literature | 2010 Jun
REPOSITORIES: biostudies-literature
Publications
Enantioselective synthesis of (E)-delta-stannyl homoallylic alcohols via aldehyde allylboration using alpha-stannylallylboranes generated by allene hydroboration followed by a highly diastereoselective 1,3-boratropic shift.
Journal of the American Chemical Society 20100601 23
A highly enantioselective synthesis of (E)-delta-stannyl homoallylic alcohols 4 via aldehyde allylboration reactions of the double-chiral allylborane reagent 2a is reported. Allylborane 2a was generated from the hydroboration of commercially available allenylstannane 1 with ((d)Ipc)(2)BH at -40 to -20 degrees C followed by a kinetically controlled and highly diastereoselective 1,3-boratropic shift in intermediate 3a. ...[more]