Introduction of functional groups into some chlorofluorocarbon ethers.

The electrochemical fluorination of 2-methyloxane, oxepane, 2-chloromethyloxane and 2-chloromethyloxolane has been carried out. The corresponding perfluoro(2-methyloxane) and perrfluorooxepane were obtained in fair yields from the first two compounds, but from the later two, the corresponding chlorine-containing perfluorocyclic ethers, i.e. perfluoro(2-chloromethyloxane) and perfluoro(2-chloromethyloxolane), were obtained only in small yields, respectively. These new compounds have been characterized by elemental analysis, and infrared, mass and ¹⁹F nmr spectra.