Synthesis of chloro-1-difluoro-1,1-ethane

C - Chemistry – Metallurgy – 07 – C

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260/658.2

C07C 17/20 (2006.01) C07C 19/08 (2006.01)

Patent

CA 1299202

PRECIS DE LA DIVULGATION: L'invention a pour objet un procédé de fabrication du chloro-1 difluoro-1,1 éthane en phase liquide par action de l'acide fluorhydrique sur le trichloro-1,1,1 éthane et/ou le dichloro-1,1 fluoro-1 éthane. Ce procédé est caractérisé en ce que l'on utilise un acide perfluoroalcane-sulfonique, et en particulier l'acide trifluorométhane-sulfonique comme catalyseur pour améliorer la sélectivité de la réaction.

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