GB823998A - Dehydrochorination process - Google Patents
Dehydrochorination processInfo
- Publication number
- GB823998A GB823998A GB3745756A GB3745756A GB823998A GB 823998 A GB823998 A GB 823998A GB 3745756 A GB3745756 A GB 3745756A GB 3745756 A GB3745756 A GB 3745756A GB 823998 A GB823998 A GB 823998A
- Authority
- GB
- United Kingdom
- Prior art keywords
- chlorodifluoroethane
- give
- carbon atom
- copper
- dehydrochorination
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C17/00—Preparation of halogenated hydrocarbons
- C07C17/25—Preparation of halogenated hydrocarbons by splitting-off hydrogen halides from halogenated hydrocarbons
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Chlorofluoroalkanes containing at least one hydrogen atom on a carbon atom adjacent to a carbon atom having a chlorine atom are dehydrochlorinated to give the corresponding fluoroalkene by maintaining them at a temperature between 500 DEG C. and 730 DEG C. for between 1 and 60 seconds in the presence of a copper catalyst. Preferably 1:1:1-chlorodifluoroethane or 1-chloro-2:2-difluoroethane is treated to give vinylidene fluoride, and 1:1-dichloro-1:2:2 -trifluorethane gives trifluorochloroethylene. Specified catalysts include metallic copper, brass and copper chloride supported on magnesium fluoride. Details are given of the dehydrochlorination of 1:1:1-chlorodifluoroethane.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US420452A US2774799A (en) | 1954-04-01 | 1954-04-01 | Selective dehydrohalogenation of fluorohaloalkanes using a copper catalyst |
GB3745756A GB823998A (en) | 1956-12-07 | 1956-12-07 | Dehydrochorination process |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3745756A GB823998A (en) | 1956-12-07 | 1956-12-07 | Dehydrochorination process |
Publications (1)
Publication Number | Publication Date |
---|---|
GB823998A true GB823998A (en) | 1959-11-18 |
Family
ID=10396631
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3745756A Expired GB823998A (en) | 1954-04-01 | 1956-12-07 | Dehydrochorination process |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB823998A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1253702B (en) * | 1965-03-30 | 1967-11-09 | Pennsalt Chemicals Corp | Process for the production of vinylidene fluoride |
EP0010856A1 (en) * | 1978-10-26 | 1980-05-14 | Imperial Chemical Industries Plc | Halogenated hydrocarbons and a method for their preparation |
-
1956
- 1956-12-07 GB GB3745756A patent/GB823998A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1253702B (en) * | 1965-03-30 | 1967-11-09 | Pennsalt Chemicals Corp | Process for the production of vinylidene fluoride |
EP0010856A1 (en) * | 1978-10-26 | 1980-05-14 | Imperial Chemical Industries Plc | Halogenated hydrocarbons and a method for their preparation |
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