Asymmetric lithiation of substituted benzylamines, N-Boc-pyrrolidine, or N-Boc-indoline using Beak's methodology was followed by electrophilic quench with trialkylboranes. The resulting borate intermediates rearrange with concomitant C-N bond breakage to give, after oxidation, chiral secondary alcohols with high enantioselectivity.
使用Beak方法对取代的
苄胺,N-Boc-
吡咯烷或N-Boc-二氢
吲哚进行不对称
锂化反应,然后用三烷基
硼烷进行亲电淬灭。所得的
硼酸盐中间体重排,同时CN键断裂,从而在氧化后得到具有高对映选择性的手性仲醇。