METHOD FOR PREPARING PERFLUOROCYCLIC LACTONE DERIVATIVE AND MIXTURE CONTAINING PERFLUOROCYCLIC LACTONE

摘要

PROBLEM TO BE SOLVED: To provide an economically advantageous method for preparing a perfluorocyclic lactone and its derivative in good yields which are useful as fluorine solvents or as intermediate of a functional materials such as a fluororesin, a fluororubber, and a silane coupling agent. SOLUTION: A mixture comprises a compound represented by formula 1a and a perfluorocyclic lactone represented by formula 1b. A method for preparing a compound represented by formula 2 comprises subjecting the compound represented by formula 1a or the compound represented by formula 1a and the perfluorocyclic lactone represented by formula 1b to isomerization reaction. COPYRIGHT: (C)2005,JPO&NCIPI