Process for the preparation of 3,6-dichloro-salicyclic

Details Process for the preparation of 3,6-dichloro-salicyclic Process for the preparation of 3,6-dichloro-salicyclic

1978-02-15

1980-11-04

Killos, Paul J.

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

Organic compounds

Carboxylic acids and salts thereof

562424, 562477, C07C 5115

Patent

active

042321727

ABSTRACT:
An improved process for the preparation of 3,6-dichlorosalicylic acid by carboxylation of potassium 2,5-dichlorophenolate with carbon dioxide in xylene at elevated pressure, where the improvement consists of adding finely powdered, anhydrous potassium carbonate to the reaction mixture, whereby the yield of 3,6-dichloro-salicylic acid is significantly increased.

REFERENCES:
patent: 1891677 (1932-12-01), Laska et al.

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