METHOD OF PURIFYING FLUOROMETHYL-1,1,1,3,3,3-HEXAFLUOROISOPROPYL ETHER

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, hydrogenphosphate s, phosphates, hydrogencarbonates, borates and sulfites of alkali metals, alkali metal acetates and phthalates, and b...

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Main Authors KAWAI, TOSHIKAZU, KUMAKURA, MANAMI, WATANABE, MINEO, YOSHIMURA, TAKAAKI
Format Patent
LanguageEnglish
French
Published 29.05.2001
Edition6
Subjects
ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
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Summary: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, hydrogenphosphate s, 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 t he ether in the distillation step.
Bibliography:Application Number: CA19952163991