Process for the oxidation of a tetrahydrophthalic acid

Details Process for the oxidation of a tetrahydrophthalic acid Process for the oxidation of a tetrahydrophthalic acid

1989-10-02

1991-09-10

Dees, Jose G.

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic acids and salts thereof

560125, 560126, 560190, 562507, 562509, 562525, 562590, C07C 51285

Patent

active

050475827

ABSTRACT:
A process for oxidation of a tetrahydro compound of the formula ##STR1## wherein R and R' independently are H, alkyl, aryl or halo, to a glycol of the formula ##STR2## comprises treating the tetrahydro compound with hydrogen peroxide at an elevated temperature in the absence of a catalyst.
The thus-formed glycol can be further oxidized in a butanetetracarboxylic acid of the formula ##STR3## with hydrogen peroxide in the presence of a catalyst selected from the group consisting of a manganese salt, an iron salt, a chromium salt, a cerium salt, a persulfate, a perborate, a silicate, tungstic acid or an ammonium or alkali metal salt or heteropolyacid thereof, or molybdic acid or an ammonium or alkali metal salt or heteropolyacid thereof.

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