| 摘要 |
<p>One subject of the present invention is a process for the hydroxylation of phenols and of phenol ethers by hydrogen peroxide. The invention relates more particularly to a process for the hydroxylation of phenol by hydrogen peroxide. The process of the invention for the hydroxylation of a phenol or of a phenol ether having at least one hydrogen atom at the ortho and para position of the hydroxyl group or of the ether group, by reaction of said phenol or phenol ether, with hydrogen peroxide, in the presence of an acid catalyst, is characterized by the fact that the reaction is carried out in the presence of an effective amount of a catalyst which is a mixture of at least two strong acids and which is characterized by the fact that one of the acids is chosen from strong protonic acids and the other acid being chosen from superacids.</p> |
