Oxidation of di- and trimethyl aromatic hydrocarbons having orth

Details Oxidation of di- and trimethyl aromatic hydrocarbons having orth Oxidation of di- and trimethyl aromatic hydrocarbons having orth

1978-02-01

1982-03-30

Siegel, Alan

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

Organic compounds

Carboxylic acids and salts thereof

C07C 5116

Patent

active

043225497

ABSTRACT:
Catalytic liquid phase molecular oxygen oxidation of methyl-substituted aromatic hydrocarbons having two or more methyl-substituents on adjacent ring carbon atoms in acetic acid reaction medium have, in general, resulted in a substantial production of the desired ortho-oriented di-, tri-, and higher polycarboxylic substituted aromatic acids but also in the co-production of substantial amounts of oxygenated intermediates including methyl-substituted mono- and non-ortho polycarboxylic acids. Several theories have been proposed, including inherent auto-inhibiton, for such incomplete oxidations.

REFERENCES:
patent: 3030413 (1962-04-01), Taves
patent: 3920735 (1975-11-01), Wampfler et al.

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