Perfluorinated, t-amino cyclic ethers are provided. Electrochemical fluorination of N,N-dialkyl carboxamides provides Class 1 compounds of one or a mixture of perfluorinated, N-alkyl, aliphatic-substituted, saturated 1,3-oxazolidine and perfluorinated, N-alkyl, aliphatic-substituted, saturated 1,3-oxazine. Class 2 compounds comprise one or a mixture of Class 1 compounds, as well as perfluorinated, aliphatic-substituted 2-dialkylaminotetrahydrofuran and perfluorinated, aliphatic-substituted 2-dialkylamino dihydropyran.