Nickel-Catalyzed Enantioselective Arylation of Pyridinium Ions: Harnessing an Iminium Ion Activation Mode
作者:Stephen T. Chau、J. Patrick Lutz、Kevin Wu、Abigail G. Doyle
DOI:10.1002/anie.201303994
日期:2013.8.26
A nickel for your thoughts …︁ An enantioselective nickel‐catalyzed cross‐coupling between N‐acylpyridinium salts and organozinc reagents is reported. The catalytic system, which is comprised of an air‐stable NiII source and a chiral phosphoramidite ligand, affords 2‐substituted‐2,3‐dihydro‐4‐pyridones with up to >99 % ee.
镍为您的想法...︁报告了N-酰基吡啶盐和有机锌试剂之间的对映选择性镍催化交叉偶联。该催化体系由空气稳定的 Ni II源和手性亚磷酰胺配体组成,可提供 2-取代-2,3-二氢-4-吡啶酮,其ee高达 >99% 。