LAUSR

Titanium complexes containing a bridging indenylethylamido ligand have been synthesized and used as catalysts for hydroamination and hydroaminoalkylation reactions. All dichloro titanium complexes (η5:η1-Ind-C2H4-NR)TiCl2 (R = i-Pr (2a), t-Bu (2b), Cy (2c), Ph (2d)), which were prepared by reacting TiCl4(Et2O)2 with Li2[Ind-C2H4-NR], were fully characterized by single-crystal X-ray analysis. Reaction of 2a–c with methyllithium gave the thermally sensitive corresponding dimethyl titanium complexes [η5:η1-Ind-C2H4-N(alkyl)]TiMe2 (alkyl = i-Pr (3a), t-Bu (3b), Cy (3c)), while the N-aryl-substituted dimethyl titanium complexes [η5:η1-Ind-C2H4-N(aryl)]TiMe2 (aryl = Ph (3d), p-MeOC6H4 (3e)) were directly prepared by reacting Li2[Ind-C2H4-N(aryl)] with in situ generated Cl2TiMe2. In the case of complex 3d, the molecular structure could be determined by single-crystal X-ray analysis. All dimethyl titanium complexes (η5:η1-Ind-C2H4-NR)TiMe2 (R = i-Pr (3a), t-Bu (3b), Cy (3c), Ph (3d), p-MeOC6H4 (3e)) were finally ...