Asymmetric hydroboration with new chiral monoalkylboranes bearing a non-stereogenic, chirotopic center
作者:Claus-Dieter Graf、Paul Knochel
DOI:10.1016/s0040-4020(99)00445-7
日期:1999.7
c acids bearing a non-stereogenic, chirotopic center were prepared via stereoselective copper catalyzed carbon-carbon bond forming reactions. These compounds serve as intermediates in the synthesis of new chiral monoalkylboranes which lead to enantio-selectivities of up to 64% ee in the asymmetric hydroboration of cyclic olefins.
通过立体选择性铜催化的碳-碳键形成反应,制备了具有非立体异构手性中心的对映体纯的2,5-二有机环戊烷羧酸。这些化合物用作合成新的手性单烷基硼烷的中间体,在环烯烃的不对称加氢硼化反应中,其对映选择性高达ee的64%。