A process for the production of hydrofluoroethers

Details A process for the production of hydrofluoroethers A process for the production of hydrofluoroethers

C - Chemistry, Metallurgy

07

C

C07C 43/12 (2006.01) C07C 41/01 (2006.01) C07C 41/34 (2006.01) C07C 41/42 (2006.01)

Patent

CA 2249231

Briefly, in one aspect, this invention provides an improved alkylation process for the preparation of primary and secondary hydrofluoroether compounds, said process comprising: (1) combining in a polar, aprotic solvent: a) a fluorinated carbonyl-containing compound; b) an anhydrous source of fluoride ion; c) a tertiary or aromatic amine; and (d) optionally, an effective amount of a phase transfer catalyst; (2) contacting the resulting mixture with an alkylating agent; and (3) recovering hydrofluoroether from the resulting product mixture.

Selon un aspect, la présente invention concerne un procédé d'alkylation amélioré pour la préparation de composés d'hydrofluoroéther primaires et secondaires. Ce procédé consiste à (1) combiner dans un solvent polaire exempt de protons (a) un composé contenant du carbonyle fluoruré, (b) une source anhydre d'ions fluorure, (c) une amine aromatique ou tertiaire; et (d) éventuellement, une quantité efficace d'un catalyseur de transfert de phase; (2) mettre le mélange obtenu en contact avec un agent d'alkylation et (3) récupérer l'hydrofluoroéther dans le mélange obtenu.

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