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A series of enantiomerically-pure ligands containing a combination of proline and DPEN groups have been prepared and employed in the asymmetric transfer hydrogenation of ketones. In the case of cyclic ketones, alcohols with ees of up to 96 % were obtained.____________ [a]

Enantiomerically pure ligands (I) and (II) containing a combination of proline and DPEN moieties are synthesized and successfully employed in the asymmetric transfer hydrogenation of ketones.

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