Comparison of yttrium binaphthylamido alkyl and amide complexes for enantioselective intramolecular hydroamination

The complex Y[(R)-C20H12(NC5H9)2][NiPr2][THF]2·LiCl catalyses the cyclisation of aminoolefins with ee up to 81% and reveals a more efficient catalyst for both its activity and enantioselectivity in a lesser extent than neutral alkyl, ate alkyl or ate tetraamido complexes coordinated by the same ligand.