VERFAHREN ZUR REINIGUNG VON FLUORMETHYL-1,1,1,3,3,3-HEXAFLUORISOPROPYLETHER

摘要

A method of purifying fluoromethyl 1,1,1,3,3,3-hexafluoroisopropyl ether by distilling the crude ether in the presence of a compound selected from among hydroxides, hydrogenphosphates, phosphates, hydrogencarbonates, borates and sulfites of alkali metals, alkali metal acetates and phthalates, and boric acid. According to this method, a highly pure fluoromethyl 1,1,1,3,3,3-hexafluoroisopropyl ether to be used as a medicine, especially as an inhalation anesthetic, can be produced by effectively inhibiting the decomposition of the ether in the distallation step.