Cyclometallation reactions. XIV. Some reactions of nitrogen-donor ligands

Abstract

The preparation of ortho-metallated complexes from reactions between MnR(CO)5 (R = Me or CH2Ph) or Li2PdCl4 and the following N-donor ligands is reported: azophenetole [Mn; also Ru, from Ru3(CO)12], Dimethyl Yellow (Pd), 4,4?-azobis(N,N-dimethylaniline) (Mn,Pd), azoxybenzene (Pd), 4,4?-azoxyanisole (Pd), benzylideneazine (Mn), N,N?-dimethylbenzylamine (Mn) and N-benzyl-aniline (Mn). The reactions between MnMe(CO)5 and azoxybenzene and azoxyanisole afford metallated derivatives of the corresponding azo compounds; the former derivative was also obtained from hydrazobenzene and MnMe(CO)5.