Process for preparing alkali metal 3-sulfobenzoates

Details Process for preparing alkali metal 3-sulfobenzoates Process for preparing alkali metal 3-sulfobenzoates

1993-08-06

1994-12-06

Chan, Nicky

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

Organic compounds

Sulfonic acids or salts thereof

C07C30929

Patent

active

053712811

ABSTRACT:
The present invention relates to a process for preparing alkali metal 3-sulfobenzoates. 3-(Chlorosulfonyl)benzoic acid is admixed with an aqueous alkali metal chloride solution, the mixture is heated and, after reaction, cooled to .ltoreq.15.degree. C. and the crystallized alkali metal 3-sulfobenzoate is separated off.

REFERENCES:
patent: 4358410 (1982-11-01), Demler et al.
patent: 4393234 (1983-07-01), Blank et al.
patent: 5136043 (1992-08-01), Meier et al.
Advanced Organic Chemistry, "Reactions, Mechanisms, and Structure", 3rd Edition, Jerry March, p. 444, Reaction O-117, 1974.
Gilbert, E. E., et al, Ind. a. Eng. Chem. vol. 45:2065-2071 (1953).

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