FIELD: organic chemistry, chemical technology.
SUBSTANCE: invention relates to a method for preparing hydroxyaromatic compounds by oxidation of aromatic compounds with nitrous oxide in gaseous phase in the presence of zeolites. Method is realized by interaction of aromatic compounds of the formula (I): Ar-Rn wherein Ar means benzene or naphthalene; R means bromine, chlorine, fluorine atom, -NO2, -CN, -NH2, hydroxy-group, alkyl with 1-6 carbon atoms or phenyl; n = 0, 1 or 2 with nitrous oxide in gaseous phase in the presence of zeolites taken among the following order: pentasil, ferrierite and zeolite-β. Zeolite crystallites size is less 100 nm that is calcined before using at temperature from 500°C to 1350°C for 0.5-18 h. Before the calcination process zeolite is modified preferably by precipitation of silane or borane. Method provides realization of the process for a single step with high yield of the end compound and minimal formation of by-side substances.
EFFECT: improved preparing method.
11 cl, 3 tbl, 13 ex
