Title:
PROCESS FOR PRODUCTION OF FLUORINE-CONTAINING FLUORO- SULFONYLALKYL VINYL ETHERS
Document Type and Number:
WIPO Patent Application WO/2003/106407
Kind Code:
A1
Abstract:
A process for the production of fluorine-containing fluorosulfonylalkyl vinyl ethers represented by the general formula: CF2=CFO(CF2CF(CF3)O)nCF2(CF2CF2)mCF2SO2F (wherein m is an integer of 0 to 5 and n is an integer of 0 to 10), characterized by reacting an &ohgr -halogenated vinyl ether represented by the general formula: CF2=CFO(CF2CF(CF3)O)nCF2(CF2CF2)mCF2X (wherein X is I or Br, and m and n are each as defined above) with an alkali metal dithionite and a neutralizing agent to form a vinyl ether sulfinate represented by the general formula: CF2=CFO(CF2CF(CF3)O)nCF2(CF2CF2)mCF2SO2M (wherein M is Ma or Mb1/2; Ma is an alkali metal; Mb is an alkaline earth metal; and m and n are each as defined above), chlorinating the vinyl ether sulfinate, and then fluorinating the obtained compound. According to the process, fluorine-containing fluorosulfonyl- alkyl vinyl ethers can be industrially advantageously produced in high yield.
Inventors:
SUGIYAMA AKIHIRA (JP)
OHTSUKA TATSUYA (JP)
ICHIHARA KAZUYOSHI (JP)
MANTANI TOSHIYA (JP)
OHTSUKA TATSUYA (JP)
ICHIHARA KAZUYOSHI (JP)
MANTANI TOSHIYA (JP)
Application Number:
PCT/JP2003/006440
Publication Date:
December 24, 2003
Filing Date:
May 23, 2003
Export Citation:
Assignee:
DAIKIN IND LTD (JP)
SUGIYAMA AKIHIRA (JP)
OHTSUKA TATSUYA (JP)
ICHIHARA KAZUYOSHI (JP)
MANTANI TOSHIYA (JP)
SUGIYAMA AKIHIRA (JP)
OHTSUKA TATSUYA (JP)
ICHIHARA KAZUYOSHI (JP)
MANTANI TOSHIYA (JP)
International Classes:
C07C303/02; C07C309/82; C07C313/04; (IPC1-7): C07C303/02; C07C309/82; C07C313/04
Domestic Patent References:
| WO1999032439A1 | 1999-07-01 |
Foreign References:
| JPS57128703A | 1982-08-10 | |||
| JPS6130552A | 1986-02-12 |
Attorney, Agent or Firm:
Saegusa, Eiji (1-7-1 Doshomachi, Chuo-k, Osaka-shi Osaka, JP)
Download PDF: