Method of preparing monofluoromethyl ethers

C - Chemistry – Metallurgy – 07 – C

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C07C 41/22 (2006.01) C07C 43/12 (2006.01)

Patent

CA 2277928

8A method of preparing fluoromethyl 2,2,2-trifluoro-1-(trifluoromethyl)ethyl ether (sevoflurane) and structurally related monofluo- methyl ethers in which the monochloromethyl ether precursor thereof is reacted with a sterically hindered tertiary amine hydrofluoride salt.

On décrit un procédé de préparation d'éther de fluorométhyle 2,2,2-trifluoro-1-(trifluorométhyl)éthyle (sévoflurane) et d'éthers de fluorométhyle ayant une structure apparentée. Dans le procédé, on fait réagir le précurseur d'éther de monochlorométhyle avec un sel hydrofluorure d'amine tertiaire à empêchement stérique.

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