Process for producing 2,2,3,3-tetrafluorooxetane
AssigneeUnimatec Co., Ltd.
InventorsSunao Ikeda, Takehiro Sonoi
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Abstract
In the production of 2,2,3,3-tetrafluorooxetane by reaction of tetrafluoroethylene with a compound of formaldehyde generation source in anhydrous hydrogen fluoride, the reaction is carried out in the presence of polyfluoroalkylcarboxylic acid or polyfluoroalkyl ester thereof, represented by the following general formula RfCOORf′ (where Rf is a polyfluoroalkyl group having 1-5 carbon atoms, and Rf′ is a hydrogen atom or a polyfluoroalkyl group having 1-5 carbon atoms), preferably CF3COOH, CF3COOCH2CF2CF3, or CF3COOCH2CF3, whereby a high reaction yield can be attained.
Claims4
A process for producing 2,2,3,3-tetrafluorooxethane, which comprises allowing tetrafluoroethylene to react with a formaldehyde generating compound in anhydrous hydrogen fluoride, said reaction being carried out in the presence of polyfluoroalkylic acid or polyfluoroalkyl ester thereof, represented by the following general formula:
- RfCOORf′
- wherein Rf is a polyfluoroalkyl group having 1-5 carbon atoms, and Rf′ is a hydrogen atom or a polyfluoroalkyl group having 1-5 carbon atoms.
Dependencies are inferred from the claim text.