WO1994012453A1 - Process for producing perfluoroalkyl bromide - Google Patents
Process for producing perfluoroalkyl bromide Download PDFInfo
- Publication number
- WO1994012453A1 WO1994012453A1 PCT/JP1993/001738 JP9301738W WO9412453A1 WO 1994012453 A1 WO1994012453 A1 WO 1994012453A1 JP 9301738 W JP9301738 W JP 9301738W WO 9412453 A1 WO9412453 A1 WO 9412453A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- perfluoroalkyl
- ibr
- reaction
- light
- bromine
- Prior art date
Links
- -1 perfluoroalkyl bromide Chemical compound 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 5
- 238000006243 chemical reaction Methods 0.000 claims abstract description 35
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 claims abstract description 13
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 claims abstract description 13
- 229910052794 bromium Inorganic materials 0.000 claims abstract description 13
- 238000004519 manufacturing process Methods 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 6
- 238000010992 reflux Methods 0.000 claims description 4
- 238000000926 separation method Methods 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 2
- 239000006227 byproduct Substances 0.000 abstract description 3
- 230000001678 irradiating effect Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract 1
- 238000005191 phase separation Methods 0.000 abstract 1
- 239000002994 raw material Substances 0.000 description 7
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 6
- WTWWXOGTJWMJHI-UHFFFAOYSA-N perflubron Chemical compound FC(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)Br WTWWXOGTJWMJHI-UHFFFAOYSA-N 0.000 description 6
- 229960001217 perflubron Drugs 0.000 description 6
- KWXGJTSJUKTDQU-UHFFFAOYSA-N 1,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8-heptadecafluoro-8-iodooctane Chemical compound FC(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)I KWXGJTSJUKTDQU-UHFFFAOYSA-N 0.000 description 3
- 238000000605 extraction Methods 0.000 description 3
- 239000013076 target substance Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 238000003384 imaging method Methods 0.000 description 2
- 239000003999 initiator Substances 0.000 description 2
- 125000005010 perfluoroalkyl group Chemical group 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- CPELXLSAUQHCOX-UHFFFAOYSA-M Bromide Chemical compound [Br-] CPELXLSAUQHCOX-UHFFFAOYSA-M 0.000 description 1
- 239000008186 active pharmaceutical agent Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 150000001349 alkyl fluorides Chemical class 0.000 description 1
- 238000005893 bromination reaction Methods 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000002872 contrast media Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 239000000032 diagnostic agent Substances 0.000 description 1
- 229940039227 diagnostic agent Drugs 0.000 description 1
- 229940088679 drug related substance Drugs 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000011541 reaction mixture Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- 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
- C07C17/20—Preparation of halogenated hydrocarbons by replacement by halogens of halogen atoms by other halogen atoms
- C07C17/202—Preparation of halogenated hydrocarbons by replacement by halogens of halogen atoms by other halogen atoms two or more compounds being involved in the reaction
- C07C17/204—Preparation of halogenated hydrocarbons by replacement by halogens of halogen atoms by other halogen atoms two or more compounds being involved in the reaction the other compound being a halogen
Definitions
- the present invention relates to an efficient method for producing perfluoroalkyl amides.
- Perfluoroalkylpromide is a compound that has X-ray imaging and MR imaging capabilities and is useful as a drug substance for these diagnostic agents.
- perfluorooctyl bromide is being developed as an X-ray and MR contrast agent.
- the heating reaction proceeds in a wide temperature range of 40 to 500 ° C.
- the reaction is carried out in the presence of a radical initiator (Japanese Patent Application Laid-Open No. 60-184033), or It is necessary to carry out the reaction under a high temperature condition of 300 ° C. or higher (JP-A-3-287551).
- a radical initiator Japanese Patent Application Laid-Open No. 60-184033
- JP-A-3-287551 Japanese Patent Application Laid-Open No. 60-184033
- perfluoroalkyl iodide and bromine can be obtained by irradiating ultraviolet light for 7 days in a glass sealed tube to obtain perfluoroalkyl lipide [RN Haszeldine, J. Chem. S o, 3761-3768 (1953)], but the reaction is laboratory scale and takes a long time, so it is hardly an industrial method.
- the method of synthesizing perfluoroalkyl alkyl bromide from perfluoroalkyl alkylideide and bromine requires a long time in the case of photoreaction and radical initiation in the case of thermal reaction. The agent had to be used or reacted at high temperatures.
- An object of the present invention is to produce perfluoroalkyl amides in an industrially advantageous manner in a short time, efficiently and with a high yield under mild heating conditions without adding additives such as a radical initiator. It is to provide a manufacturing method. 1 (Disclosure of the Invention)
- the present invention relates to a perfluoroalkyl iodide represented by the general formula CnF 2 n +1 I (n; 6 to 10) and bromine in a light-transmissive reactor under irradiation of light with 120 to 180.
- the present invention relates to a method for producing perfluoroalkyl bromide, wherein the reaction is carried out while heating to ° C and simultaneously removing by-product IBr by layer separation.
- the perfluoroalkyl iodide represented by the above general formula used as a starting material in the present invention may be linear or branched, for example, CF 3 (CF 2 ) 5 I, (CF 3 ) 2 CF (CF 2 ) 4 I, CF 3 (CF 2 ) 5 I, CF 3 (CF 2 ) 7 I and the like.
- n is more preferably in the range of 6 to 8.
- the reaction rate is preferably, for example, about 1 to 3 mol of bromine per 1 mol of perfluoroalkyl iodide.
- the reaction is carried out by placing perfluoroalkyl iodide as a raw material in a light-transmissive reaction vessel, heating it, and dropping bromine while irradiating light. It may be added.
- the reaction can also be performed in a continuous manner. In the case of the continuous type, a flow as shown in FIG. 2 is shown.
- glass-made flasks and tubes or other glass-made reaction vessels can be used as the light-transmissive reaction vessel.c
- the reaction temperature is preferably 120 to 180 ° C, which is a level at which the perfluoroalkyl iodide is refluxed. Particularly preferably, the temperature is 140 to 160 ° C.
- reaction temperature is lower than the above lower limit, it becomes lower than the boiling point under the normal pressure of IBr, so that the IBr cannot be removed, so that the reaction rate is remarkably reduced.
- the light light having a wavelength of 1 m or less, preferably 0.2 to 0, such as visible light and ultraviolet light can be used. Furthermore, it is effective to carry out the reaction in a nitrogen stream to avoid decomposition of the raw materials.
- the IBr by-produced in the present invention has a boiling point similar to that of the perfluoroalkyl iodide as the raw material and the perfluoroalkyl iodide of the desired product. And it was difficult to separate. However, IBr is hardly soluble in the raw material and the target substance, and the specific gravity is larger than that of the raw material and the target substance. If a mixture of IBr and the raw material and the target substance is allowed to stand, the IBr is separated into layers and IBr is separated as a lower layer.
- the reaction efficiency is increased by continuously extracting the by-product IBr out of the system by layer separation, and the desired product can be obtained in a short time and with high yield.
- the desired perfluoroalkyl compound can be easily obtained, for example, by washing the reaction mixture with an alkali or a reducing agent and then purifying it.
- FIG. 1 is an example of an IBr continuous extraction type reaction apparatus used in the present invention.
- FIG. 2 is an example of a continuous reaction flow sheet used in the present invention.
- FIG. 3 shows C 8 F! Over time in Examples 1-2 and Comparative Examples 1-3.
- 7 is a graph showing the generation rate of 7 Br.
- an H-tube equipped with a cooling Dimroth and a Dimroth with a cock for removing IBr was attached to a 500 ml four-necked flask.
- a flask was charged with 200 ml (747 mM) of perfluoro octyl iodide (PFOI) and 5.0 ml (97. ImM) of bromine, heated to 150 to 150 ° C, and irradiated with a 500 W visible light lamp.
- PFOI perfluoro octyl iodide
- bromine 5.0 ml (97. ImM)
- the produced IBr was extracted from the Dimroth for removing the IBr appropriately.c After reacting for 5 hours, the reaction solution was cooled and washed with a 5% aqueous sodium hydroxide solution (200 ml). Yield 92.5%).
- FIG. 3 shows the generation rate of C 8 F 17 Br over time in Examples 1 and 2 and Comparative Examples 1 to 3.
- a perfluoroalkyl iodide can be industrially produced in a short time and efficiently with high yield under mild heating conditions such that the perfluoroalkyl iodide is refluxed without adding an additive. Can be advantageously manufactured.
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP94901016A EP0673906A4 (en) | 1992-11-30 | 1993-11-30 | METHOD FOR PRODUCING PERFLUOROALKYLBROMIDE. |
US08/424,518 US5688379A (en) | 1992-11-30 | 1993-11-30 | Process for preparing perfluoroalkyl bromides |
JP51298194A JP3387099B2 (ja) | 1992-11-30 | 1993-11-30 | パーフルオロアルキルブロマイドの製造法 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP34530392 | 1992-11-30 | ||
JP4/345303 | 1992-11-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1994012453A1 true WO1994012453A1 (en) | 1994-06-09 |
Family
ID=18375684
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1993/001738 WO1994012453A1 (en) | 1992-11-30 | 1993-11-30 | Process for producing perfluoroalkyl bromide |
Country Status (4)
Country | Link |
---|---|
US (1) | US5688379A (ja) |
EP (1) | EP0673906A4 (ja) |
JP (1) | JP3387099B2 (ja) |
WO (1) | WO1994012453A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2019172709A (ja) * | 2019-07-17 | 2019-10-10 | ダイキン工業株式会社 | C8F17Brを含む組成物及びC8F17Brの製造方法 |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20030093519A (ko) * | 2002-06-03 | 2003-12-11 | 삼성전자주식회사 | 액정 표시 장치용 박막 트랜지스터 어레이 기판 |
KR101139522B1 (ko) * | 2004-12-04 | 2012-05-07 | 엘지디스플레이 주식회사 | 반투과형 박막 트랜지스터 기판 및 그 제조 방법 |
JP6794319B2 (ja) | 2017-07-03 | 2020-12-02 | ダイキン工業株式会社 | C8F17Brを含む組成物及びC8F17Brの製造方法 |
CN112341310B (zh) * | 2020-10-27 | 2023-04-18 | 山东重山光电材料股份有限公司 | 一种溴代全氟烷烃的制备方法 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4826729B1 (ja) * | 1968-04-11 | 1973-08-15 | ||
DE4116361A1 (de) * | 1990-06-23 | 1992-01-02 | Hoechst Ag | Verfahren zur herstellung von perfluoralkylmonobromiden |
JPH04173752A (ja) * | 1990-11-08 | 1992-06-22 | Nippon Mektron Ltd | パーフルオロアルキルブロマイドの製造法 |
JPH05148172A (ja) * | 1991-11-29 | 1993-06-15 | Nippon Haron Kk | パーフルオロアルキルブロマイドの製造方法 |
JPH05186375A (ja) * | 1991-06-21 | 1993-07-27 | Elf Atochem Sa | 相当するヨウ化物の光臭素化による臭化ペルフルオロアルキルの合成 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4004783A1 (de) * | 1990-02-16 | 1991-08-22 | Hoechst Ag | Verfahren zur herstellung von weitgehend fluorierten aliphatischen kohlenwasserstoffen, die 1 oder 2 brom- oder chloratome im molekuel aufweisen |
DE4037169A1 (de) * | 1990-11-22 | 1992-05-27 | Hoechst Ag | Verfahren zur herstellung von weitgehend fluorierten aliphatischen kohlenwasserstoffen, die 1 oder 2 brom- oder chloratome enthalten |
-
1993
- 1993-11-30 WO PCT/JP1993/001738 patent/WO1994012453A1/ja not_active Application Discontinuation
- 1993-11-30 EP EP94901016A patent/EP0673906A4/en not_active Withdrawn
- 1993-11-30 JP JP51298194A patent/JP3387099B2/ja not_active Expired - Lifetime
- 1993-11-30 US US08/424,518 patent/US5688379A/en not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4826729B1 (ja) * | 1968-04-11 | 1973-08-15 | ||
DE4116361A1 (de) * | 1990-06-23 | 1992-01-02 | Hoechst Ag | Verfahren zur herstellung von perfluoralkylmonobromiden |
JPH04173752A (ja) * | 1990-11-08 | 1992-06-22 | Nippon Mektron Ltd | パーフルオロアルキルブロマイドの製造法 |
JPH05186375A (ja) * | 1991-06-21 | 1993-07-27 | Elf Atochem Sa | 相当するヨウ化物の光臭素化による臭化ペルフルオロアルキルの合成 |
JPH05148172A (ja) * | 1991-11-29 | 1993-06-15 | Nippon Haron Kk | パーフルオロアルキルブロマイドの製造方法 |
Non-Patent Citations (1)
Title |
---|
See also references of EP0673906A4 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2019172709A (ja) * | 2019-07-17 | 2019-10-10 | ダイキン工業株式会社 | C8F17Brを含む組成物及びC8F17Brの製造方法 |
JP2021155451A (ja) * | 2019-07-17 | 2021-10-07 | ダイキン工業株式会社 | C8F17Brを含む組成物及びC8F17Brの製造方法 |
Also Published As
Publication number | Publication date |
---|---|
JP3387099B2 (ja) | 2003-03-17 |
EP0673906A4 (en) | 1996-04-03 |
US5688379A (en) | 1997-11-18 |
EP0673906A1 (en) | 1995-09-27 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN101321724A (zh) | 用于制备(ω-氨烷基氨基)烷基卤及其转化为氨磷汀的方法 | |
WO1994012453A1 (en) | Process for producing perfluoroalkyl bromide | |
JPH07110827B2 (ja) | テトラブロムビスフエノ−ルaの製造方法 | |
JP2559312B2 (ja) | ヒドロゲンペルフルオロアルカンの合成 | |
JP4684402B2 (ja) | ペルフルオロアルカジエンの製造方法 | |
JP4255446B2 (ja) | 2−トリフルオロメチル−6−フルオロベンズアルデヒドおよびその誘導体の製造方法 | |
CN1022623C (zh) | 全氟烷基溴的合成 | |
JP4471078B2 (ja) | アルキルベンズアルデヒド類の製造方法 | |
JP3918883B2 (ja) | ベンゾイルクロライド類の製造方法 | |
McBee et al. | The Preparation of Certain Ethers of Trifluoromethyl-substituted Phenols1, 2 | |
WO2020066754A1 (ja) | 化合物の製造方法 | |
JPS6078967A (ja) | 2−クロロピリジン及び/又は2,6−ジクロロピリジンの製造法 | |
JPS597700B2 (ja) | インドリン類の製造方法 | |
JPS597699B2 (ja) | インドリン類の製造方法 | |
JP4066544B2 (ja) | シクロペンテノンの製造方法 | |
JPS63303950A (ja) | 含フッ素化合物及びその製法 | |
JP7385141B2 (ja) | 精製された含フッ素エーテル化合物を含む組成物の製造方法 | |
JP2016135803A (ja) | ペルフルオロアルケニルオキシ基含有アレーン化合物の製造法 | |
JP2841110B2 (ja) | α―クロロケトン類の製造法 | |
JPH11279116A (ja) | シュウ酸ジアルキルの製造法 | |
JPH06234671A (ja) | 対応するヨウ化物の光化学的臭素化によるペルフルオロアルキル臭化物の合成 | |
JPS60115547A (ja) | p−(ハロメチル)フェニルケトンおよびその製法 | |
JPS6187646A (ja) | フッ素置換安息香酸フェニルの製造方法 | |
JP3403770B2 (ja) | ハイドロフルオロカーボンの製造方法 | |
JPS6137748A (ja) | ヘミアセタールからフロラールの純粋水和物を製造する方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): JP US |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LU MC NL PT SE |
|
DFPE | Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101) | ||
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 1994901016 Country of ref document: EP |
|
WWP | Wipo information: published in national office |
Ref document number: 1994901016 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 08424518 Country of ref document: US |
|
WWW | Wipo information: withdrawn in national office |
Ref document number: 1994901016 Country of ref document: EP |