Process for the preparation of aromatic dicarboxylic acids and a

Details Process for the preparation of aromatic dicarboxylic acids and a Process for the preparation of aromatic dicarboxylic acids and a

1991-09-13

1993-02-02

Dees, Jose G.

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

Organic compounds

Carboxylic acid esters

562419, 562429, 562432, 562480, 562488, 562840, 562867, 568 28, 568 58, 568635, 585 25, 585269, C07C 69773, C07C 5116, C07C 132, C07C 63331

Patent

active

051839261

ABSTRACT:
Aromatic dicarboxylic acids of the formula ##STR1## in which R.sup.1, R.sup.2, m, n, and X have the meaning mentioned in the description,
can be prepared from the bisphenols, on which they are based, of the formula ##STR2## if the bisphenols are first reacted to give the bissulphonates, the sulphonate groups are removed catalytically with H.sub.2 and the hydrocarbons obtained in this way are doubly acylated in a known manner and the acyl groups are oxidized to the carboxyl groups.
Many of the aromatic dicarboxylic acids which can be prepared in this way are new.

REFERENCES:
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patent: 2794822 (1957-06-01), Schweitzer
patent: 2823197 (1958-02-01), Morris et al.
patent: 2848486 (1958-08-01), Petropoulos
patent: 2851437 (1958-09-01), Petropoulos
patent: 3016400 (1962-01-01), Petropoulos
patent: 3385863 (1968-05-01), Wick et al.
patent: 4485247 (1984-11-01), Durvasula
patent: 4686303 (1987-08-01), Bauer et al.
patent: 4698364 (1987-10-01), Tanemura et al.
patent: 4914231 (1990-04-01), Manami et al.
The Journal of Organic Chemistry, vol. 37, No. 3, (1972), pp. 425-430.

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