Preparation of N-alkyl-N-perfluoroacylperfluoroacylamides, used as perfluoroacylating agents, comprises reacting N-alkyl-perfluorocarboxamide with carboxylic anhydride

摘要

Preparation of N-alkyl-N-perfluoroacylperfluoroacylamides (I) comprises reacting N-alkyl-perfluorocarboxamides (II) with carboxylic anhydrides (III). Preparation of N-alkyl-N-perfluoroacylperfluoroacylamides of formula (I) comprises reacting N-alkyl-perfluorocarboxamides of formula (II) with carboxylic anhydrides of formula (III): [R1C(O)][R2C(O)NR3 (I) R1C(O)NHR3 (II) [R2C(O)]2O (III) R1, R21-3 carbon (C) perfluoroalkyl; R31-4C alkyl.