Cp2TiCl2-catalyzed cis-hydroalumination of propargylic amines with Red-Al: stereoselective synthesis of Z-configured allylic amines.

A titanium-catalyzed cis-hydroalumination of propargylic amines with Red-Al is described, which provides an efficient way to produce Z-configured allylic amines in good to excellent yields with high stereoselectivity and good regioselectivity. The hydride-bridged Al/Ti bimetallic species may act as a real catalyst in this reaction.