JP2001322955A5 - - Google Patents
Download PDFInfo
- Publication number
- JP2001322955A5 JP2001322955A5 JP2000143022A JP2000143022A JP2001322955A5 JP 2001322955 A5 JP2001322955 A5 JP 2001322955A5 JP 2000143022 A JP2000143022 A JP 2000143022A JP 2000143022 A JP2000143022 A JP 2000143022A JP 2001322955 A5 JP2001322955 A5 JP 2001322955A5
- Authority
- JP
- Japan
- Prior art keywords
- alkali metal
- metal hydroxide
- trifluoropropene
- aqueous solution
- hydroxide
- 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.)
- Pending
Links
Description
【特許請求の範囲】
【請求項１】 １，２−ジブロモ−３，３，３−トリフルオロプロパンとアルカリ金属水酸化物とを水を溶媒として３０〜１３０℃で反応させることを特徴とする２−ブロモ−３，３，３−トリフルオロプロペンの製造方法。
【請求項２】 アルカリ金属水酸化物の水溶液を３０〜１３０℃に加熱し攪拌しながら、該水溶液に１，２−ジブロモ−３，３，３−トリフルオロプロパンを滴下して反応させつつ蒸留精製することにより、２−ブロモ−３，３，３−トリフルオロプロペンを得ることを特徴とする２−ブロモ−３，３，３−トリフルオロプロペンの製造方法。
【請求項３】 反応温度を、４０〜９０℃の範囲内とする請求項１または２記載の製造方法。
【請求項４】 アルカリ金属水酸化物を、水酸化ナトリウムまたは水酸化カリウムのいずれかとする請求項１または２記載の製造方法。
【請求項５】 アルカリ金属水酸化物の水溶液濃度を、５〜３０重量％とする請求項１または２記載の製造方法。
[Claims]
1. A method according to claim 1, wherein 1,2-dibromo-3,3,3-trifluoropropane is reacted with an alkali metal hydroxide at 30 to 130 ° C. using water as a solvent. A method for producing 3,3-trifluoropropene.
2. An aqueous solution of an alkali metal hydroxide is heated to 30 to 130 ° C. and stirred, and 1,2-dibromo-3,3,3-trifluoropropane is added dropwise to the aqueous solution to carry out distillation while reacting. A method for producing 2-bromo-3,3,3-trifluoropropene, comprising obtaining 2-bromo-3,3,3-trifluoropropene by purification.
3. The method according to claim 1 , wherein the reaction temperature is in the range of 40 to 90 ° C.
The wherein the alkali metal hydroxide method according to claim 1 or 2, wherein either the sodium hydroxide or potassium hydroxide.
5. The method according to claim 1 , wherein the concentration of the aqueous solution of the alkali metal hydroxide is 5 to 30% by weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000143022A JP2001322955A (en) | 2000-05-16 | 2000-05-16 | Method for producing 2-bromo-3,3,3-trifluoropropene |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000143022A JP2001322955A (en) | 2000-05-16 | 2000-05-16 | Method for producing 2-bromo-3,3,3-trifluoropropene |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001322955A JP2001322955A (en) | 2001-11-20 |
| JP2001322955A5 true JP2001322955A5 (en) | 2007-04-19 |
Family
ID=18649894
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000143022A Pending JP2001322955A (en) | 2000-05-16 | 2000-05-16 | Method for producing 2-bromo-3,3,3-trifluoropropene |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2001322955A (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102482180B (en) * | 2009-08-31 | 2014-08-27 | 住友化学株式会社 | Method for producing 1,1,3-trichloro-1-propene |
| CN102206134B (en) * | 2011-04-02 | 2014-02-05 | 西安近代化学研究所 | Preparation method of 2-bromine-3,3,3-trifluoropropene |
| JP6183370B2 (en) * | 2012-09-21 | 2017-08-23 | セントラル硝子株式会社 | Process for producing 1,2-dichloro-3,3,3-trifluoropropene |
| US8877988B2 (en) | 2012-12-21 | 2014-11-04 | Honeywell International Inc. | Synthesis of 1-BROM0-3,3,3-trifluoropropene |
| WO2023176433A1 (en) * | 2022-03-16 | 2023-09-21 | 株式会社レゾナック | Fluoroalkene storage method |
| WO2023176434A1 (en) * | 2022-03-16 | 2023-09-21 | 株式会社レゾナック | Method for storing fluoroalkene |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5921648A (en) * | 1982-07-29 | 1984-02-03 | Sagami Chem Res Center | Methacrylic acid ester containing fluorine |
-
2000
- 2000-05-16 JP JP2000143022A patent/JP2001322955A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2008030439A3 (en) | Dehydrofluorination process to manufacture hydrofluoroolefins | |
| WO2006063241A3 (en) | Direct one-step synthesis from cf3-i | |
| WO2006055748A3 (en) | Method for the preparation of sevoflurane | |
| JP2005527623A5 (en) | ||
| JP2001322955A5 (en) | ||
| WO2002055459A3 (en) | Method of making hydrofluorocarbons and hydrochlorofluorocarbons | |
| MXPA04005141A (en) | Process for the manufacture of methyl cellulose ether. | |
| JP2006514107A5 (en) | ||
| JP2008143794A5 (en) | ||
| US20140228417A1 (en) | Process and intermediates for the preparation of substituted 2-arylthiazole carboxylic acids | |
| CN104193664B (en) | A kind of synthetic method of imrecoxib | |
| JP2001206881A5 (en) | ||
| CN105859540B (en) | A kind of chloroacetic synthesis and production process of difluoro | |
| CA2397497A1 (en) | Process for the preparation of 5-carboxyphthalide and its use for the production of citalopram | |
| CN112939893B (en) | Synthesis method of 4- (4-aminophenyl) -3-morpholinone | |
| JP3078631B2 (en) | Method for producing chloromethylhalogenopyridines | |
| KR890005045A (en) | Oxethylmercapto benzaldehyde and its oxidation product | |
| JP2009242370A (en) | Method for producing toluidine compound | |
| NZ596447A (en) | Process for the preparation of a iodinating agent | |
| EE200200417A (en) | Process for the preparation of 6- (4-chlorophenyl) -2,2-dimethyl-7-phenyl-2,3-dihydro-1H-pyrrolizin-5-ylacetic acid | |
| JP5200428B2 (en) | Method for producing tetrahydropyran-4-one | |
| JPS6133A (en) | Production of methallyl alcohol | |
| JP2007519660A5 (en) | ||
| CN104478742A (en) | Fluoro compound and preparation method thereof | |
| JP2006520762A5 (en) |