Preparation of salicylic acid and derivatives

Details Preparation of salicylic acid and derivatives Preparation of salicylic acid and derivatives

1977-12-29

1978-12-26

Killos, Paul J.

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

Organic compounds

Carboxylic acids and salts thereof

562474, 562477, 562475, 562468, C07C 6514

Patent

active

041316185

ABSTRACT:
The invention relates to an improved method of preparing salicylic acid and derivatives from phenyl esters which comprises the step of fusing acetoxyphenyl, or derivative suitable for preparing the desired salicylic acid derivative, with M.sub.2 CO.sub.3 where M is potassium or sodium in the presence of carbon dioxide, at a temperature of from 150.degree. to 250.degree. C., and at a pressure of from atmospheric to 500 p.s.i.g.

REFERENCES:
patent: 3714226 (1973-01-01), Rugle
patent: 3992459 (1976-11-01), Utng et al.
H. E. Zaugg, J. Org. Chem., vol. 41, No. 21, 3419-3421 (1976).

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