| abstract |
The invention relates to a process for the hydroxylation of aromatic hydrocarbons by direct oxidation with hydrogen peroxide. The process is carried out in the presence of a catalyst comprising: iron, administered as inorganic salt; iron ligand, consisting of carboxylic acids of ether-aromatic compounds containing nitrogen, in particular pyrazin-2-carboxylic acid and derivatives; acidifying agent, especially trifluoracetic acid, and a solvent system comprising an organic phase consisting of a substrate and acetonitrile and an aqueous phase containing the catalyst and hydrogen peroxide. |