Asymmetric Hydrogenation of Cyclic Imines with an Ionic Cp*Rh(III) Catalyst

Abstract
When associated with a noncoordinating bulky counteranion, a cationic Cp*Rh(III)-diamine catalyst displayed excellent enantioselectivities in asymmetric hydrogenation of cyclic imines, affording bioactive tetrahydroisoquinolines and tetrahydro-β-carbolines frequently with 99% ee’s.

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