METHOD OF OXIDATION OF AROMATIC COMPOUNDS TO HYDROXYAROMATIC COMPOUNDS Russian patent published in 2002 - IPC

Abstract RU 2185368 C2

FIELD: organic chemistry, chemical technology. SUBSTANCE: invention relates to a method of synthesis of hydroxylated aromatic compounds by oxidation of aromatic compound with hydrogen peroxide in an organic solvent in the presence of synthetic zeolites. Organic solvent in the amount from 10 to 90 wt. % of reaction mass is taken among compounds of the general formula (I): where R1, R2, R3 and R4 are similar or different and mean hydrogen atom or alkyl group with 1-4 carbon atoms, or among compounds of the general formula (II): where R and R' are similar or different, mean alkyl radical with 1-4 carbon atoms. Benzene, toluene, ethylbenzene, chlorobenzene, anisol, phenol or naphthol can be used as an organic compound . Titanium silicate can be used as a catalyst. Invention provides the possibility to carry out the process at increased temperatures under conditions of homogenization of a mixture of an aromatic compound and hydrogen peroxide. EFFECT: improved method of oxidation. 19 cl, 3 tbl, 31 ex

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RU 2 185 368 C2

Authors

Ungarelli Raffaehle

Balduchchi Luidzhi

B'Janki Daniele

Dates

2002-07-20Published

1998-11-26Filed