Patent ID: 6274775
Filing Date: 2001-08-14
Classification: C07C

Abstract:
A process for the preparation of nitrosobenzenes of the general formula ##STR2##whereinR.sup.1 and R.sup.2 are identical or different and represent hydrogen, C.sub.1 -C.sub.4 -alkyl or C.sub.1 -C.sub.4 -alkoxy,comprising the step of oxidizing of corresponding aromatic amines, wherein the oxidation is carried out with hydrogen peroxide in the presence of an oxidation catalyst based on tungsten compounds, molybdenum compounds, and mixtures thereof at temperatures of 5 to 25.degree. C. in the absence of an organic solvent at a molar ratio of aromatic amines to hydrogen peroxide to oxidation catalyst of(1):(2.0 to 5.0):(0.001 to 0.05).