Process for oxidizing esters of methyl-substituted phenol compou

Details Process for oxidizing esters of methyl-substituted phenol compou Process for oxidizing esters of methyl-substituted phenol compou

1989-03-08

1990-08-28

Lone, Werren B.

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

Organic compounds

Carboxylic acid esters

260405, 2604105, 560 77, 562416, 562417, 562421, 562475, 562480, 562524, C07C 51215, C07C 6739

Patent

active

049527215

ABSTRACT:
A process is disclosed for the oxidation of esters of para- and meta-methyl-substituted phenols to the corresponding aromatic carboxylic acid in the presence of a promoter comprising an anhydride of a lower aliphatic carboxylic acid and a heavy metal catalyst with or without the presence of bromine. The resulting carboxylic acids are useful in liquid crystal polymers and polymers useful in engineering plastics.

REFERENCES:
patent: 4314073 (1982-02-01), Crooks

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