Process for the preparation of 4-hydroxy-1,2-benzisothiazol-3(2H

Details Process for the preparation of 4-hydroxy-1,2-benzisothiazol-3(2H Process for the preparation of 4-hydroxy-1,2-benzisothiazol-3(2H

1986-03-19

1986-12-02

Demers, Arthur P.

Chemistry: electrical and wave energy

Processes and products

426548, 548210, 548211, C25C 300

Patent

active

046263250

ABSTRACT:
The specification describes a process for preparing 4-hydroxy-1,2-benzisothiazol-3(2H)-one-1,1-dioxide, a sweetener, from 1,2-benzisothiazol-3(2H)-one-1,1-dioxide by anodic oxidation in the presence of trifluoroacetic acid or trifluoromethanesulfonic acid and, optionally, in the presence of salts which increase the conductivity. The oxidation is effected in an anhydrous medium and the 4-trifluoroacetoxy-1,2-benzisothiazol-3(2H)-one-1,1-dioxide formed as an intermediate when, for example, trifluoroacetic acid is used is decomposed with water to obtain the desired end product.

REFERENCES:
patent: 4057555 (1977-11-01), Kolke et al.
patent: 4140697 (1979-02-01), Batcho et al.
patent: 4404230 (1983-09-01), Trummlitz et al.

Affiliated with

Also associated with

Rating

Process for the preparation of 4-hydroxy-1,2-benzisothiazol-3(2H 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 the preparation of 4-hydroxy-1,2-benzisothiazol-3(2H, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the preparation of 4-hydroxy-1,2-benzisothiazol-3(2H will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2291274