Intermolecular olefin hydroamination was studied by various Lewis acids. The results of ZrCl(4), FeCl(3), BiCl(3), and AlCl(3) catalyzed reactions of norbornene with aromatic amines were compared, and BiCl(3) was found to be the most effective catalyst to give high yields for various amines, whereas ZrCl(4) could promote the reactions at relatively low temperatures. The FeCl(3) catalyzed reactions