JPS5690026A - Preparation of hexafluoroisobutene - Google Patents
Preparation of hexafluoroisobuteneInfo
- Publication number
- JPS5690026A JPS5690026A JP16882379A JP16882379A JPS5690026A JP S5690026 A JPS5690026 A JP S5690026A JP 16882379 A JP16882379 A JP 16882379A JP 16882379 A JP16882379 A JP 16882379A JP S5690026 A JPS5690026 A JP S5690026A
- Authority
- JP
- Japan
- Prior art keywords
- formula
- acid
- lower alkyl
- catalyst
- octafluoroisobutyl
- 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.)
- Granted
Links
Abstract
PURPOSE: To obtain the titled compound as a raw material for heat-resistant polymers, by hydrolyzing an easily available and inexpensive octafluoroisobutyl lower alkyl ether as a raw material in the presence of an acid catalyst, reducing the hydrolysis product, and dehydrating the reduction product in the presence of an alkali catalyst.
CONSTITUTION: An octafluoroisobutyl lower alkyl ether expressed by formula I (R is alkyl) is hydrolyzed in the presence of an acid catalyst, e.g. concentrated sulfuric acid, to prepare a lower alkyl ester of a hexafluroisobutyric acid of formula II, which is reduced, catalytically or chemically, preferably in a combination of lithium aluminum hydride with a Lewis acid, to produce hexafluoroisobutanol of formula III. The resultant compound is dehydrated in the presence of a basic catalyst, e.g. lithium hydroxide, under mild conditions, to give the aimed compound of formula IV.
USE: A modifier of ethylene/tetrafluoroethylene or chlorotrifluoroethylene copolymers.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16882379A JPS5690026A (en) | 1979-12-24 | 1979-12-24 | Preparation of hexafluoroisobutene |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16882379A JPS5690026A (en) | 1979-12-24 | 1979-12-24 | Preparation of hexafluoroisobutene |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5690026A true JPS5690026A (en) | 1981-07-21 |
| JPS5761332B2 JPS5761332B2 (en) | 1982-12-23 |
Family
ID=15875166
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16882379A Granted JPS5690026A (en) | 1979-12-24 | 1979-12-24 | Preparation of hexafluoroisobutene |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5690026A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1037431C (en) * | 1991-12-11 | 1998-02-18 | 帝国化学工业公司 | Production of hydrofluorocarbons |
| US6849194B2 (en) | 2000-11-17 | 2005-02-01 | Pcbu Services, Inc. | Methods for preparing ethers, ether compositions, fluoroether fire extinguishing systems, mixtures and methods |
| CN107032950A (en) * | 2017-03-28 | 2017-08-11 | 巨化集团技术中心 | A kind of synthetic method of hexafluoro-isobutene |
| CN107151198A (en) * | 2017-03-28 | 2017-09-12 | 巨化集团技术中心 | A kind of preparation method of hexafluoro-isobutene |
-
1979
- 1979-12-24 JP JP16882379A patent/JPS5690026A/en active Granted
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1037431C (en) * | 1991-12-11 | 1998-02-18 | 帝国化学工业公司 | Production of hydrofluorocarbons |
| US6849194B2 (en) | 2000-11-17 | 2005-02-01 | Pcbu Services, Inc. | Methods for preparing ethers, ether compositions, fluoroether fire extinguishing systems, mixtures and methods |
| CN107032950A (en) * | 2017-03-28 | 2017-08-11 | 巨化集团技术中心 | A kind of synthetic method of hexafluoro-isobutene |
| CN107151198A (en) * | 2017-03-28 | 2017-09-12 | 巨化集团技术中心 | A kind of preparation method of hexafluoro-isobutene |
| CN107032950B (en) * | 2017-03-28 | 2019-09-03 | 巨化集团技术中心 | A kind of synthetic method of hexafluoro-isobutene |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5761332B2 (en) | 1982-12-23 |
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