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.