Process for preparing esters of 3,5,6-trichlorosalicyclic acid

Details Process for preparing esters of 3,5,6-trichlorosalicyclic acid Process for preparing esters of 3,5,6-trichlorosalicyclic acid

1992-07-30

1993-03-16

Killos, Paul J.

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

Organic compounds

Carboxylic acid esters

562474, C07C 6976

Patent

active

051946661

ABSTRACT:
An improved process for the synthesis of esters of 3,5,6-trichlorosalicylic acid in quantitative yield comprises reacting the acid with an alcohol under distillation conditions in the presence of a titanium ester or chelate catalyst, whereby byproduct ether formation from the alcohol is suppressed. The process is especially applicable to a process by which salicylic acid is chlorinated first in concentrated sulfuric acid and then with iodine catalyst to make the trichlorosalicylic acid which is extracted and then reacted with an alcohol and a titanium catalyst to make the ester.

REFERENCES:
patent: 3062877 (1962-11-01), Hanna
patent: 3597362 (1971-08-01), Bollyky et al.
patent: 3749679 (1973-07-01), Rauhut
patent: 3781329 (1973-12-01), Bollyky
patent: 3816326 (1974-06-01), Bollyky
patent: 4308395 (1981-12-01), Manfre et al.
AG Leulier and Pinet, Bull. Soc. Chim, 41, 1362-1370 (1927).

Affiliated with

Also associated with

Rating

Process for preparing esters of 3,5,6-trichlorosalicyclic acid 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 esters of 3,5,6-trichlorosalicyclic acid, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for preparing esters of 3,5,6-trichlorosalicyclic acid will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-352072