PERFLUORO-CYCLIC DICARBOXYLIC ACID COMPOUND AND PRODUCTION THEREOF

摘要

NEW MATERIAL:A perfluoro-cyclic dicarboxylic acid compound of formula I (l and n are 0 or 1; m is 3 or 4). EXAMPLE:Perfluoro(2-carboxy-cyclohexylacetic acid). USE:Intermediate for producing various useful compounds and substances such as functional polymer membrane, lubricant, etc. PREPARATION:The compound of formula I is produced by hydrolyzing a perfluorobicyclolactam compound of formula II (Rf is lower perfluoroalkyl), formula III or formula IV in the presence of an alkali as a reaction catalyst preferably under cooling.