efficient kinetic resolution (KR) protocol for 1,2-diamines has been developed through asymmetric electrophilic aminations of anilines enabled by chiral phosphoric acid catalysis. A wide array of substituted 1,2-diamines were compatible with this method, generating both the recovered staring materials and the amination products with high enantioselectivities (with s-factor up to 218). Notably, this method
1,2-二胺的有效动力学拆分 (KR) 协议已通过手性
磷酸催化实现的
苯胺不对称亲电胺化开发。多种取代的 1,2-二胺与该方法兼容,可生成具有高对映选择性(s因子高达 218)的回收起始材料和胺化产物。值得注意的是,该方法适用于带有 α-叔胺部分的 1,2-二胺的动力学拆分,这代表了此类 1,2-二胺的第一个 KR。引入的
肼基团的轻松去除和N-芳基的
氧化裂解以释放游离
伯胺证明了该方法的价值。