Processes for preparing 3,5,6-trichlorosalicylic acid and esters

Details Processes for preparing 3,5,6-trichlorosalicylic acid and esters Processes for preparing 3,5,6-trichlorosalicylic acid and esters

1980-07-11

1981-12-29

Killos, Paul J.

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

Organic compounds

Carboxylic acid esters

562474, C07C 6976, C07C 6500

Patent

active

043083951

ABSTRACT:
An improved single-pot process for synthesis of 3,5,6-trichlorosalicylic acid and esters thereof is described. 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 to make the ester.

REFERENCES:
patent: 3013055 (1961-12-01), Richter
patent: 3210414 (1965-10-01), Hanna

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