Phospholane-Phosphite Ligands for Rh Catalyzed Enantioselective Conjugate Addition: Unusually Reactive Catalysts for Challenging Couplings
作者:Sophie H. Gilbert、José A. Fuentes、David B. Cordes、Alexandra M. Z. Slawin、Matthew L. Clarke
DOI:10.1002/ejoc.202000336
日期:2020.5.29
Rh catalysts derived from the phospholane‐phosphite ligand, BOBPHOS (L1 in picture) promote transmetalation of aryl boronic acids more readily than a Rh/BINAP control systems. This leads to some difficult asymmetric arylations becoming feasible for the first time, or for others to operate using much lower excess of aryl boronic acid.
衍生自膦酸酯-亚磷酸酯配体BOBPHOS的Rh催化剂(图中的L1)比Rh / BINAP控制系统更容易促进芳基硼酸的金属转移。这导致一些困难的不对称芳基化首次变为可行,或使其他不对称芳基化使用低得多的过量芳基硼酸进行操作。