Process for the preparation of alkanesulfonylbenzoic acids

Details Process for the preparation of alkanesulfonylbenzoic acids Process for the preparation of alkanesulfonylbenzoic acids

1992-03-24

1992-12-29

Shippen, Michael L.

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

Organic compounds

Carboxylic acids and salts thereof

562416, C07C 5116

Patent

active

051753510

ABSTRACT:
A process for the preparation of alkanesulfonylbenzoic acids from alkanesulfonylalkylbenzenes of the formula ##STR1## in which R.sup.1 and R.sup.2 are identical or different and are alkyl having 1 to 4 carbon atoms, but R.sup.2 has a meaning other than t-butyl, and X is H, F, Cl, Br or NO.sub.2, using molecular oxygen in acetic acid and/or propionic acid in the presence of a catalyst containing cobalt and bromine ions and, in particular when the meaning of R.sup.2 is other than methyl, also manganese ions, which is additionally carried out in the presence of metal ions of Main Group 2 and/or 3.

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patent: 5087724 (1992-02-01), Tanaka
Hiroshi, S. et al, Chemical Abs. 111:133781n Abstract of JP 01-79145 (1989).

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