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

• A new tethered Rh(III) complex containing the TsDPEN ligand was synthesized.
• This complex proved efficient for asymmetric transfer hydrogenation of ketones.
• High level of enantio- and diastereoselectivities was obtained for this reaction.

A new Rh(III) complex containing the TsDPEN ligand and an η6-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.

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