Convenient method for the rapid generation of highly active and enantioselective yttrium catalysts for asymmetric hydroamination

A facile method for the preparation of highly active and enantioselective yttrium precatalysts for asymmetric hydroamination of gem-disubstituted aminoalkenes, from the combination of YCl3 or YCl3(THF)(3.5) with ligand (R)-L-1 and n-BuLi is described.