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 coppercatalyzed 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 asymmetrichydroboration of cyclic olefins.