Process for the preparation of aromatic sulphonic acid halides

Details Process for the preparation of aromatic sulphonic acid halides Process for the preparation of aromatic sulphonic acid halides

1981-01-22

1982-09-14

Trousof, Natalie

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260196, 260200, 260201, 260205, 260206, 260207, 2602071, 260453AP, 260453AR, 260543R, 260544D, 260544B, 260544S, 260544N, 260544P, 260544L, 560 12, 560 13, 560 14, 560 25, 560 27, 560 28, 560138, 560139, 560142, 562427, 562428, 562429, 562430, 260192, C07C10704, C07C14370, C07C10706, C07C 5158, C07C 6304, C07C 6310, C07C 6501, C07C 5116, C07C 51255, C07C147107

Patent

active

043494714

ABSTRACT:
A process for the simultaneous preparation of an aromatic sulphonic acid halide and an aromatic carboxylic acid halide or the corresponding carboxylic acid is disclosed wherein an aromatic sulphonic acid or acid anhydride is reacted with an aromatic trihalogenomethyl compound in the presence of a Bronsted acid or Lewis acid at a temperature of 20.degree. to 300.degree. C., if appropriate in the presence of a solvent. Generally, at least half an equivalent of aromatic trihalogenomethyl compound is employed per equivalent of sulphonic acid.

REFERENCES:
patent: 3686301 (1972-08-01), Kirch

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