Oxidation of aromatic amines and nitroso compounds

Ogata and Tabushi studied the kinetics of oxidation of some N,N-dimethyl-anilines in aqueous solutions of pH 1-12 at 25 °C (some runs were performed at other temperatures in the range 15-30 °C). The product of oxidation is an amine oxide, viz. 

Gragerov and Levit studied the oxidations of some aromatic amines and nitroso compounds by peroxomonosulphate in H2 0, and found that the products were unlabelled. Therefore the formation of hydroxyl radicals (by attack of peroxomonosulphate on the solvent) and their participation in the oxidations is excluded. 

In a comparison of the rates of oxidation of nitrosobenzene by various peroxy 

Lraole sec for the oxidation by peroxomonosulphate at 30 °C in 47% ethanol-water solvent. From a comparison of the rate coefficient with that observed for the oxidation of nitrosobenzene by peroxoacetic and peroxochlor-acetic acids, they concluded that the mechanism is similar to that described above for the oxidation of N,N-dimethylanilines. 

---

Oxidation of Aromatic Amines and Nitroso Compounds to Azo and Azoxy Compounds... 

---