The activation of amines by B(C 6 F 5 ) 3 is shown to effect the catalytic racemization of a chiral amine. Extending this strategy to a bimolecular process, catalytic transfer hydrogenation of imines, enamines, and N -heterocycles is demonstrated using i Pr 2 NH as the source of hydrogen and a catalytic amount of the Lewis acid B(C 6 F 5 ) 3 .
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Farrell et al. (2011) studied this question.
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