CARBOXYLATION OF PHENOLS AND HYDROXYAROMATIC CARBOXYLIC ACIDS PRODUCED THEREBY
1,219,205. Carboxylation of phenols and hydroxyaromatic carboxylic acids produced thereby. FERRO CORP. 5 April, 1968 [7 April, 1967; 14 March, 1968], No. 16453/68. Heading C2C. Hydroxyaromatic carboxylic acids are prepared by carboxylating a phenol in the presence of a solvent at least 15% by weight...
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