title: Immobilized catalysts for iridium-catalyzed allylic amination: rate enhancement by immobilization.
abstract: The first immobilized catalyst for Ir-catalyzed asymmetric allylic aminations 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 in recycling experiments.
authors: Organisch-Chemisches Institut, Universität Heidelberg, Im Neuenheimer Feld 270, 69120 Heidelberg (Germany).
authors: Chandi C
authors: CC
authors: Malakar
authors: Günter
authors: G
authors: Helmchen
keywords: allylic compounds; amination; asymmetric catalysis; iridium; supported catalysts