Process for preparing 3-sulfobenzoic acid and alkali metal salts

Details Process for preparing 3-sulfobenzoic acid and alkali metal salts Process for preparing 3-sulfobenzoic acid and alkali metal salts

1993-08-06

1995-02-07

Cintins, Marianne M.

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

Organic compounds

Sulfonic acids or salts thereof

C07C30322

Patent

active

053877110

ABSTRACT:
Process for preparing 3-sulfobenzoic acid and alkali metal salts thereof is disclosed. The present invention relates to a process for preparing 3-sulfobenzoic acid and/or alkali metal salts thereof, which comprises mixing 3-(chlorosulfonyl)benzoic acid with water and a water-immiscible solvent in which 3-sulfobenzoic acid is insoluble or only sparingly soluble, removing water from the mixture by azeotropic distillation, cooling and, if desired, admixing the 3-sulfobenzoic acid formed with alkali metal hydroxide and/or a substance forming alkali metal hydroxide and again removing water by azeotropic distillation.

REFERENCES:
patent: 1676698 (1928-07-01), Krecke
patent: 2642458 (1953-06-01), Erickson et al.
patent: 2913488 (1959-11-01), Blaser et al.
patent: 3636016 (1972-01-01), McGuire et al.
patent: 4358410 (1982-11-01), Demler et al.
patent: 4393234 (1983-07-01), Blank et al.
patent: 5069828 (1991-12-01), Dumas et al.
patent: 5136043 (1992-08-01), Meier et al.
patent: 5210257 (1993-05-01), Harris
Helvetica Chemica ACTA, Bd. 24, Nr. 2, 15, Mar. 1941, pp. 197-112.
Advanced Organic Chemistry, "Reactions, Mechanisms, and Structure", 3rd Edition, Jerry Mar. 1972, p. 444, Reaction O-117.
Offermann, H., Liebigs Ann. der Chemie 280(6):1-33 (1894).
Ruggli, P., et al., Helv. Chem. Acta 24:197-213 (1941).
Gilbert, E. E., et al., Ind. a. Eng. Chem. vol. 45:2065-2071 1953.

Affiliated with

Also associated with

Rating

Process for preparing 3-sulfobenzoic acid and alkali metal salts does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for preparing 3-sulfobenzoic acid and alkali metal salts, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for preparing 3-sulfobenzoic acid and alkali metal salts will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1111649