The application of X-ray photoelectron spectroscopy to the determination of the structure of a deprotonated ethylenediamine ruthenium complex

Ruthenium‐Catalyzed Aerobic Oxidation of Amines

“…Dehydrogenation of amines ligated to ruthenium centers has been documented in the literature where such reactions were considered as undesired reactions resulting in the deactivation of the metal complexes . McWhinnie et al.…”

“…The authors concluded that such observations might be attributed to an appreciable increase in the reactivity of the coordinated amines with respect to their free analogs. Later, Taube and co‐workers carried out a detailed study on the oxidation of different types of amine ligands coordinated to ruthenium centers (entries 1–3, Table ) . They observed that the oxidation of benzylamine as the ligand resulted in a high yield of the nitrile bound to the metal ion with the imine as a recognizable intermediate stage.…”

Aerobic dehydrogenation of amines to nitriles catalyzed by triazolylidene ruthenium complexes with O2 as terminal oxidant

“…16,17 Later, Taube and co-workers studied the oxidation of different types of amine ligands coordinated to ruthenium centers. 18,19 Pioneering studies of Tang et al reported the first catalytic reaction for the oxidative dehydrogenation of amines with high activity but poor selectivity when using 2-3 atm of oxygen at 100°C. 20 This study triggered the development of numerous ruthenium-based homogeneous catalytic systems for the aerobic oxidation of amines.…”

Intramolecular oxidation of the ligand 4-methyl-2-N-(2-pyridylmethyl)aminophenol (Hpyramol) upon coordination with iron(II) chloride and manganese(II) perchlorate

“…Thus, primary or secondary amino group-containing ligands can undergo a metal-assisted oxidative dehydrogenation to the corresponding imine. This phenomenon was first reported in 1971 by a few research groups, who observed it with metal ions such as copper, nickel or ruthenium [8][9][10][11].…”