Process for the preparation of acyloxybenzenesulfonic acids and

Details Process for the preparation of acyloxybenzenesulfonic acids and Process for the preparation of acyloxybenzenesulfonic acids and

1986-10-23

1988-10-18

Evans, J. E.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260505R, 560142, C11C 300, C07C 6917

Patent

active

047786299

ABSTRACT:
A process for the preparation of acyloxybenzenesulfonic acids and salts thereof, of the formula ##STR1## in which R is C.sub.1 -C.sub.17 -alkyl or C.sub.2 -C.sub.17 -alkenyl and M is an alkali or alkaline earth metal, ammonium or hydrogen, including the stages of (a) sulfonation of phenol, if appropriate (b) thermal treatment of the sulfonated phenol, (c) esterification of the sulfonated phenol and if appropriate (d) neutralization of the ester, wherein the sulfonation of the phenol is carried out with sulfuric acid or oleum and the water of reaction is removed during or after stage (b) by distillation and/or by reaction with a dehydrating agent.

REFERENCES:
patent: 4038328 (1977-07-01), Pelster
patent: 4537724 (1985-08-01), McKinnie et al.
patent: 4588531 (1986-05-01), Balzer et al.
Thomas, R. J., Ind. and Engin. Chem., 32, 408-410 (1940).
Luczyn, S., Chem. Abs., 91:107806 (1979).

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