The Cr-catalyzed Nozaki–Hiyama–Kishi reaction serves as a reliable and valuable C–C bond construction strategy in organic synthesis. However, known Cr-catalyzed asymmetric transformations are limited mainly to primary Cr intermediates with an α-substituted π-functional group, which impeded their further synthetic applications. Herein, we described a Cr-catalyzed three-component reaction, which provides
Cr催化的Nozaki-Hiyama-Kishi反应是有机合成中可靠且有价值的C-C键构建策略。然而,已知的 Cr 催化的不对称转化主要限于具有 α-取代的 π-官能团的初级 Cr 中间体,这阻碍了它们进一步的合成应用。在这里,我们描述了一种 Cr 催化的三组分反应,它提供了对有价值的手性 β-羟基
硫化物和具有邻位立体中心的
硒化物的模块化访问。基于初步机理研究,该方法通过不对称还原自由基-极性交叉进行,具有由α-
硫或
硒稳定的前所未有的二级手性烷基Cr配合物。