Synthesis, characterization and use of a new tethered Rh(III) complex in asymmetric transfer hydrogenation of ketones

A new Rh(III) complex containing the TsDPEN ligand and an eta(6)-arene connected through a carbon tether is reported. The asymmetric transfer hydrogenation of a series of ketones catalyzed by this complex using the formic acid/triethylamine system provided the corresponding alcohols with complete conversions and a high level of enantioselectivity. (C) 2015 Elsevier B.V. All rights reserved.