PROCESS FOR PRODUCING TRIFLUOROMETHANESULFONIC ANHYDRIDE

摘要

A process for trifluoromethanesulfonic anhydride production which comprises a step in which trifluoromethanesulfonic acid is reacted with phosphorus pentoxide to yield trifluoromethanesulfonic anhydride, wherein the trifluoromethanesulfonic acid is used in excess relative to the phosphorus pentoxide to thereby prevent polyphosphoric acid from generating as a by-product and solidifying the liquid reaction mixture.