Immobilized Catalysts for Iridium-Catalyzed Allylic Amination: Rate Enhancement by Immobilization
作者:Chandi C. Malakar、Günter Helmchen
DOI:10.1002/chem.201500382
日期:2015.5.4
The first immobilizedcatalyst for Ir‐catalyzed asymmetric allylicaminations is described. The catalyst is a cationic (π‐allyl)Ir complex bound by cation exchange to an anionic silica gel support. Preparation of the catalyst is facile, and the supported catalyst displayed considerably enhanced activity compared with the parent homogeneous catalyst. Up to 43 consecutive amination runs were possible