| abstract |
Perfluorocyclic lactones and derivatives thereof, which are useful as intermediates for functional materials such as fluororesins, fluororubbers, or silane coupling agents, are obtained in an economically advantageous manner and in high yield. Manufacturing. A mixture containing the following compound 1a and the following compound 1b, and the mixture is isomerized to obtain the following compound 2, and further pyrolyzed to obtain the following compound 3. [Chemical 1] [Selection figure] None |