Chlorination of phenols and phenoxyacetic acids with sulfuryl ch

Details Chlorination of phenols and phenoxyacetic acids with sulfuryl ch Chlorination of phenols and phenoxyacetic acids with sulfuryl ch

1980-01-21

1982-08-17

Killos, Paul J.

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

Organic compounds

Carboxylic acids and salts thereof

568776, C07C 3932, C07C 59148

Patent

active

043450970

ABSTRACT:
The process for the chlorination of aromatic compounds of the formula: ##STR1## wherein R is a member selected from the group consisting of hydrogen, carboxymethyl, and carboxyethyl and R.sub.x is a member selected from the group consisting of hydrogen, 2-methyl, 2,5-dichloro, and 2-chloro, with the proviso that when R is hydrogen, R.sub.x is 2,5-dichloro, consisting of reacting said aromatic compound with sulfuryl chloride in the presence of elemental sulfur or certain sulfur compounds as a catalyst, optionally together with the presence of a Friedel-Crafts acid catalyst and/or an inert organic solvent at temperatures of from 30.degree. C. to 150.degree. C., and recovering a para chlorinated compound.

REFERENCES:
patent: 4160114 (1979-07-01), Shelton
E. Earl Royals, Advanced Organic Chemistry, p. 454, 1959.

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