Claims
- 1. A compound of formula IX:
- CF.sub.2 BrCHFCH.sub.2 CH.sub.2 OSO.sub.2 R.sup.a IX:
- wherein R.sup.a is C.sub.1-4 alkyl or phenyl optionally substituted by C.sub.1-4 alkyl.
- 2. A process for preparing 4-bromo-1,1-difluoro-but-1-ene which comprises treating 1,4-dibromo-1,1,2-trifluorobutane with a debromofluorinating agent.
- 3. A process as claimed in claim 2 wherein the debromofluorination reaction is carried out in a reaction medium consisting essentially of water.
Priority Claims (4)
Number |
Date |
Country |
Kind |
9316219 |
Aug 1993 |
GBX |
|
9316220 |
Aug 1993 |
GBX |
|
9325453 |
Dec 1993 |
GBX |
|
9325455 |
Dec 1993 |
GBX |
|
Parent Case Info
This application is a division of application Ser. No. 08/286,142, filed Aug. 4, 1994 now U.S. Pat. No. 5,728,833.
US Referenced Citations (5)
Foreign Referenced Citations (5)
Number |
Date |
Country |
778748 |
Jul 1957 |
GBX |
982498 |
Feb 1965 |
GBX |
2270689 |
Mar 1994 |
GBX |
2270688 |
Mar 1994 |
GBX |
9215555 |
Sep 1912 |
WOX |
Non-Patent Literature Citations (3)
Entry |
Landbury et al., CA 79:65842, 1973. |
Chem. Ber. 119, 2233-2248, 1986. |
Chemical Abstracts, vol. 119, No. 9, Aug. 30, 1993, p. 1035, Abstracts No. 94942j, "Preparation of fluoroalkenyl group-containing compounds as pesticides", Ruminski, P.G. |
Divisions (1)
|
Number |
Date |
Country |
Parent |
286142 |
Aug 1994 |
|