title: An efficient catalyst system for the asymmetric transfer hydrogenation of ketones: remarkably broad substrate scope.
abstract: A BINOL-derived diphosphonite having a xanthene backbone is an excellent bidentate ligand in Ru-catalyzed 2-propanol-based transfer hydrogenation of aryl/alkyl and alkyl/alkyl ketones (ee = 76-99%). Even notoriously difficult ketones such as isopropyl methyl ketone are reduced with extraordinarily high enantioselectivity (ee = 99%).
authors.affiliation: Max-Planck Institut für Kohlenforschung, Mülheim/Ruhr, Germany. reetz@mpi-muelheim.mpg.de
authors.forename: Manfred T
authors.initials: MT
authors.lastname: Reetz
authors.forename: Xiaoguang
authors.initials: X
authors.lastname: Li