Method of synthesizing fluoromethylhexafluoroisopropyl ether

摘要

A method of synthesizing fluoromethylhexafluoroisopropyl ether comprises adding hexafluoroisopropyl alcohol to a mixture comprising a stoichiometric excess of paraformaldehyde and hydrogen fluoride, plus sufficient sulfuric acid to sequester most of the water produced by the reaction. The mixture is maintained at a temperature of at least 57. degree. C., to cause vapor formation by boiling of the fluoromethylhexafluoroisopropyl ether formed. The vapor is then collected and condensed, and may be purified by distillation.