Process for production of p-acetoxybenzoic acid from p-acetoxyac

Details Process for production of p-acetoxybenzoic acid from p-acetoxyac Process for production of p-acetoxybenzoic acid from p-acetoxyac

1988-08-29

1989-10-10

Shippen, Michael L.

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

Organic compounds

Carboxylic acid esters

C07C 6708

Patent

active

048733610

ABSTRACT:
A liquid-phase process is disclosed for oxidation of p-acetoxyacetophenone to p-acetoxybenzoic acid in high yield in a solvent in the presence of a catalyst and addition of a promoter comprising an acid anhydride of a lower aliphatic carboxytlic acid at an addition rate within specified mole ratio limits, a temperature within the range of from about 200.degree. F. to about 400.degree. F., and a pressure within the range of from about 1 atmosphere to 30 atmospheres. A first portion of the promoter is added at the start of the process, and a second portion of the promoter is added during the process.

REFERENCES:
patent: 4314073 (1982-02-01), Crooks
patent: 4665215 (1987-05-01), Davenport

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