FIELD: organic chemistry, chemical technology.
SUBSTANCE: invention relates to a method for preparing derivatives of perfluoroalkane sulfofluoride using as intermediate compounds, for example, in synthesis of perfluoroalkane sulfoacids and their salts as components of scrubbing gas eliciting high etching rate index. Perfluoroolefin is treated with sulfuric anhydride at temperature 45-85oC to yield perfluoroalkane sulfone and the latter is subjected for hydrolysis and prepared monohydroperfluoroalkane sulfofluoride is fluorinated with elementary fluorine at temperature 0-30oC. Method provides preparing the end product with high yield.
EFFECT: improved preparing method.
2 cl, 3 tbl, 17 ex
Title | Year | Author | Number |
---|---|---|---|
METHOD FOR PREPARING PERFLUOROALKANE SULFOFLUORIDE | 2004 |
|
RU2280030C1 |
0 |
|
SU458124A3 | |
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METHOD OF OBTAINING NITROGEN TRIFLUORIDE | 2001 |
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RU2182556C1 |
METHOD FOR PREPARING NITROGEN TRIFLUORIDE | 2004 |
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TUNGSTEN HEXAFLUORIDE PRODUCING METHOD | 2006 |
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METHOD FOR PRODUCING FLUORINATED POLYETHYLENE OXIDES | 2021 |
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METHOD OF URANIUM HEXAFLUORIDE PRODUCTION | 2007 |
|
RU2355641C1 |
Authors
Dates
2004-10-10—Published
2003-04-25—Filed