Add time:09/26/2019         Source:sciencedirect.com

The direct amination of benzene to aniline with hydroxylamine catalyzed by Sodium metavanadate (cas 13718-26-8) in acetic acid water under mild conditions took place more efficiently in open air than in a closed system. The presence of oxygen significantly enhanced the yield of aniline. Satisfactory aniline yield (64%) and turnover number (48 mol of aniline per mol of vanadium) were obtained under optimized reaction conditions. The decomposition of hydroxylamine was studied to understand its function during the amination process. A computational study on the UV–vis spectra of some typical vanadium complexes was carried out by the time-dependent DFT method. A free-radical mechanism is proposed based on the results of EPR, 51V NMR, and UV–vis characterizations.

We also recommend Trading Suppliers and Manufacturers of Sodium metavanadate (cas 13718-26-8). Pls Click Website Link as below: cas 13718-26-8 suppliers