作者:Xiaoqin Liu、Ting Liu、Wei Meng、Haifeng Du
DOI:10.1039/c8ob02446d
日期:——
With the aim of developing easily accessible chiral Lewis acids for asymmetric hydrogenation, a variety of binaphthyl-based chiral alkenes were prepared in one step from the corresponding diols. Using the in situ generated chiral boron Lewis acids through the hydroboration of chiral alkenes with Piers’ borane, metal-free asymmetric hydrogenations of imines were realized to furnish the desired amine
为了开发易于获得的用于不对称氢化的手性路易斯酸,一步就从相应的二醇制备了多种基于双萘基的手性烯烃。使用原位生成的手性硼路易斯酸,通过手性烯烃与Piers's硼烷的硼氢化反应,实现了亚胺的无金属不对称加氢,以高收率提供了所需的胺产品,ee高达89%。