75895-35-1Relevant articles and documents
FLUORINATION OF AROMATIC CARBOXYLIC ACIDS WITH SULFUR TETRAFLUORIDE XIII. FLUORINATION OF THE METHYL ESTERS OF BENZOIC ACID AND ITS SUBSTITUTED DERIVATIVES IN HYDROGEN FLUORIDE
Fialkov, Yu. A.,Moklyachuk, L. I.,Kremlev, M. M.,Yagupol'skii, L. M.
, p. 1269 - 1271 (2007/10/02)
The methyl esters of benzoic acid and its substituted derivatives react with sulfur tetrafluoride in anhydrous hydrogen fluoride under mild conditions, and the methoxycarbonyl group is converted into a trifluoromethyl group.The fluorination of the methyl esters of polyfluoro and perfluoroacyloxybenzoic acids leads to the formation of poly- and perfluoroalkoxy derivatives of benzotrifluoride.The action of the H2SO4-HSO3Cl mixture on the latter leads to hydrolysis not of the fluoroalkoxyl group but of the trifluoromethyl group.