HUP9802542A2 - Process for the preparation of 4-bromo-1,1-difluorobut-1-ene and 2,4-dibromo-1,1,1-trifluorobutane - Google Patents

Process for the preparation of 4-bromo-1,1-difluorobut-1-ene and 2,4-dibromo-1,1,1-trifluorobutane

Info

Publication number
HUP9802542A2
HUP9802542A2 HU9802542A HUP9802542A HUP9802542A2 HU P9802542 A2 HUP9802542 A2 HU P9802542A2 HU 9802542 A HU9802542 A HU 9802542A HU P9802542 A HUP9802542 A HU P9802542A HU P9802542 A2 HUP9802542 A2 HU P9802542A2
Authority
HU
Hungary
Prior art keywords
trifluorobutane
dibromo
bromo
difluorobut
ene
Prior art date
Application number
HU9802542A
Other languages
Hungarian (hu)
Inventor
Alfred Glyn Williams
Original Assignee
Zeneca Ltd.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Zeneca Ltd. filed Critical Zeneca Ltd.
Publication of HUP9802542A2 publication Critical patent/HUP9802542A2/en
Publication of HUP9802542A3 publication Critical patent/HUP9802542A3/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C21/00—Acyclic unsaturated compounds containing halogen atoms
    • C07C21/02—Acyclic unsaturated compounds containing halogen atoms containing carbon-to-carbon double bonds
    • C07C21/18—Acyclic unsaturated compounds containing halogen atoms containing carbon-to-carbon double bonds containing fluorine
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C303/00—Preparation of esters or amides of sulfuric acids; Preparation of sulfonic acids or of their esters, halides, anhydrides or amides
    • C07C303/26—Preparation of esters or amides of sulfuric acids; Preparation of sulfonic acids or of their esters, halides, anhydrides or amides of esters of sulfonic acids
    • C07C303/28—Preparation of esters or amides of sulfuric acids; Preparation of sulfonic acids or of their esters, halides, anhydrides or amides of esters of sulfonic acids by reaction of hydroxy compounds with sulfonic acids or derivatives thereof
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C17/00—Preparation of halogenated hydrocarbons
    • C07C17/093—Preparation of halogenated hydrocarbons by replacement by halogens
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C17/00—Preparation of halogenated hydrocarbons
    • C07C17/23—Preparation of halogenated hydrocarbons by dehalogenation
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C19/00—Acyclic saturated compounds containing halogen atoms
    • C07C19/08—Acyclic saturated compounds containing halogen atoms containing fluorine
    • C07C19/14—Acyclic saturated compounds containing halogen atoms containing fluorine and bromine
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
    • C07C29/132—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of an oxygen containing functional group
    • C07C29/136—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of an oxygen containing functional group of >C=O containing groups, e.g. —COOH
    • C07C29/143—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of an oxygen containing functional group of >C=O containing groups, e.g. —COOH of ketones
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
    • C07C29/132—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of an oxygen containing functional group
    • C07C29/136—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of an oxygen containing functional group of >C=O containing groups, e.g. —COOH
    • C07C29/147—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of an oxygen containing functional group of >C=O containing groups, e.g. —COOH of carboxylic acids or derivatives thereof

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

A találmány tárgya eljárás 4-bróm-1,1-diflűőr-1-bűtén előállításáraőly módőn, hőgy 2,4-dibróm-1,1,1-triflűőr-bűtánt főlyékőnyreakcióközegben egy diflűőrbrómőzó szerrel kezelnek, majd a kívántterméket elkülönítik. A találmány tárgyát képezi a kiindűlási anyagként fehasznált 2,4-dibróm-1,1,1-triflűőr-bűtán előállítása is őly módőn, hőgy egy 1,1,1-triflűőr-bűtán-2,4-szűlfőnátőt (előnyösen mezilátőt vagy tőzilátőt)brőmidfőrrással reagáltatnak. ŕThe subject of the invention is a process for the production of 4-bromo-1,1-difluoro-1-butene, in which 2,4-dibromo-1,1,1-trifluorobutane is treated with a difluorobrominating agent in a boiling reaction medium, and then the desired product is isolated. The subject of the invention is also the production of 2,4-dibromo-1,1,1-trifluorobutane used as a starting material in the same way, i.e. a 1,1,1-trifluorobutane-2,4-sulfonate (preferably mesilate or ) are reacted with bromide boiling. ŕ

HU9802542A 1995-09-06 1996-08-23 Process for the preparation of 4-bromo-1,1-difluorobut-1-ene and 2,4-dibromo-1,1,1-trifluorobutane HUP9802542A3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GBGB9518111.1A GB9518111D0 (en) 1995-09-06 1995-09-06 Chemical process

Publications (2)

Publication Number Publication Date
HUP9802542A2 true HUP9802542A2 (en) 1999-02-01
HUP9802542A3 HUP9802542A3 (en) 1999-03-29

Family

ID=10780231

Family Applications (1)

Application Number Title Priority Date Filing Date
HU9802542A HUP9802542A3 (en) 1995-09-06 1996-08-23 Process for the preparation of 4-bromo-1,1-difluorobut-1-ene and 2,4-dibromo-1,1,1-trifluorobutane

Country Status (10)

Country Link
EP (1) EP0850211A1 (en)
JP (1) JPH11512110A (en)
KR (1) KR19990044419A (en)
CN (1) CN1200717A (en)
AU (1) AU6828896A (en)
GB (1) GB9518111D0 (en)
HU (1) HUP9802542A3 (en)
IL (1) IL123460A0 (en)
WO (1) WO1997009292A1 (en)
ZA (1) ZA967262B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE537133T1 (en) * 2006-11-01 2011-12-15 Daikin Ind Ltd METHOD FOR PRODUCING OLEFIN
CN107652162A (en) * 2017-11-29 2018-02-02 常州沃腾化工科技有限公司 A kind of preparation method of cyclohexyl bromide methane

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9219635D0 (en) * 1992-09-16 1992-10-28 Ici Plc Heterocyclic compounds
AU7193094A (en) * 1993-08-05 1995-02-28 Zeneca Limited Process for the preparation of fluoroathenylthio heterocyclic derivatives

Also Published As

Publication number Publication date
AU6828896A (en) 1997-03-27
GB9518111D0 (en) 1995-11-08
ZA967262B (en) 1997-03-06
CN1200717A (en) 1998-12-02
KR19990044419A (en) 1999-06-25
IL123460A0 (en) 1998-09-24
EP0850211A1 (en) 1998-07-01
JPH11512110A (en) 1999-10-19
WO1997009292A1 (en) 1997-03-13
HUP9802542A3 (en) 1999-03-29

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