Asymmetric Synthesis XIV: TiCl(Oipr)3-Promoted Asymmetric Coupling Reaction of D-Camphor Ketimine Anion

Abstract
Optically active 1, 2-Diphenylethylendiamine(9) is obtained by asymmetric oxidative coupling reaction of d-camphor ketimine anion (4). Among various oxidating agents, TiCl(Oipr)3 is better than l2, Br2, CuCl2, FeCl3 and BrCH2CH2Br.

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