PROCESS FOR PREPARING PERFLUORO-ALKOXYPROPIONIC ACID FLUORIDES

摘要

of the disclosure: Perfluoro carbonyl compounds react with hexafluoro propene epoxide in the presence of dimethylamino-difluoro-phosphorane producing perfluorinated carboxylic acid fluorides with ether linkages. Among the carbonyl compounds which can be used are perfluorinated ketones, acid fluorides of the formula RF - COF and RF - OCF(CF3) - COF (RF being a perfluoro-alkyl radical having from 1 to 4 carbon atoms) and perfluoro-2-oxo-3,6-dimethyl-1,4-dioxsne.