Copper‐Catalyzed Addition of Grignard Reagents to in situ Generated Indole‐Derived Vinylogous Imines
作者:Luo Ge、Mercedes Zurro、Syuzanna R. Harutyunyan
DOI:10.1002/chem.202004232
日期:2020.12.9
Herein, the first protocol for catalytic asymmetric conjugate addition of Grignard reagents to various sulfonyl indoles, offering a straightforward approach for the synthesis of chiral 3‐sec‐alkyl‐substituted indoles in high yields and enantiomeric ratios is presented. This methodology makes use of a chiral catalyst based on copper phosphoramidite complexes and in situ formation of vinylogous imine
手性吲哚衍生物是药物和生物碱中普遍存在的基序。本文介绍了第一个将格氏试剂催化不对称共轭加成到各种磺酰基吲哚的方案,为高产率和对映体比率的手性3-仲烷基取代的吲哚的合成提供了一种直接的方法。该方法学利用了基于亚磷酰胺铜配合物的手性催化剂和乙烯基亚胺中间体的原位形成。