作者:Qiuyuan Tan、Xinqiao Wang、Lin Fu、Ling He、Min Zhang
DOI:10.1016/j.tetlet.2021.153005
日期:2021.4
A highly efficient asymmetric allylboration of isatinimines with γ-substituted allylboronic acids under metal-free conditions was disclosed. Employing chiral amino alcohol as the chirality controller, the reaction proceeded with high efficiency and excellent stereoselectivity, providing a broad range of chiral 3-allyl-3-hydroxyethylamino oxindoles containing adjacent quaternary–tertiary stereocenters
在无金属条件下,揭示了γ取代烯丙基硼酸的伊沙汀胺的高效不对称烯丙基硼化。采用手性氨基醇作为手性控制器,反应以高效率和出色的立体选择性进行,以高产率和优异的非对映选择性(高达 92% 的产率,>20:1 d.r.)提供广泛的手性 3-烯丙基-3-羟乙基氨基氧吲哚,其中包含相邻的季-叔级立体中心