| 摘要 |
<p>Hydroxylation of aromatic hydrocarbons is prone to polyhydroxylation and the production of tarry by-products. Selective monohydroxylation of aromatics hydrocarbons can be obtained by reacting a limited amount of hydrogen peroxide with the aromatic in solution in a compatible organic solvent and in the presence of a catalyst that is at least partly soluble in the reaction medium and is the salt of a heteropolyacid of general formula: Q3+vPMnVvO40 in which Q represents a compatible organic cation, M represents molybdenum or tungsten, v is an integer which is up to 3, and n is an integer such that n + v = 12. A preferred organic cation comprises cetyl pyridinium. Preferably the reaction medium comprises acetonitrile.</p> |
