Carbonylation process for the production of aromatic acids or es

Details Carbonylation process for the production of aromatic acids or es Carbonylation process for the production of aromatic acids or es

1986-07-21

1987-03-31

Shippen, Michael L.

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

Organic compounds

Carboxylic acid esters

560 97, 560100, 560103, 562406, C07C 6736

Patent

active

046544364

ABSTRACT:
This invention relates to a novel carbonylation process for the production of aromatic carboxylic acids or esters of aromatic. More particularly, this invention relates to a process for the carbonylation of aromatic iodides or bromides with carbon monoxide in the presence of a palladium catalyst promoted with a Group VIB carbonyl and in the presence of an alcohol or water in a base reaction medium having a pKa greater than about 8. When the alcohol is used the product is the ester. When water is used the product is the carboxylic acid.

REFERENCES:
patent: 2565463 (1951-08-01), Tabet
patent: 2914554 (1959-11-01), Kroeper
patent: 3733354 (1973-05-01), Cassar
patent: 3988358 (1976-10-01), Heck
patent: 3996288 (1976-12-01), Yukata

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