EP1060294B1 - Verfahren zur carboxylierung von terminalen alkinen - Google Patents
Verfahren zur carboxylierung von terminalen alkinen Download PDFInfo
- Publication number
- EP1060294B1 EP1060294B1 EP99914466A EP99914466A EP1060294B1 EP 1060294 B1 EP1060294 B1 EP 1060294B1 EP 99914466 A EP99914466 A EP 99914466A EP 99914466 A EP99914466 A EP 99914466A EP 1060294 B1 EP1060294 B1 EP 1060294B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- terminal
- cathode
- carbon dioxide
- alkynes
- proton
- 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.)
- Expired - Lifetime
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B3/00—Electrolytic production of organic compounds
- C25B3/20—Processes
- C25B3/25—Reduction
Definitions
- the invention relates to a process for the carboxylation of terminal Alkynes according to the preamble of the first claim.
- This carboxylation involves a number of different ones Get carboxylic acids. Partially arise from ring closure aromatic or cycloaliphatic carboxylic acids. In addition to carboxylic acids with terminal carboxyl groups arise those with secondary ones Carboxyl groups. All reaction products is however common that the terminal triple bond of the alkyne, involved in the carboxylation to a double bond is converted. The terminal alkynes can therefore be used Do not produce 2-alkyne carboxylic acids by this process.
- the invention has for its object a method of the beginning to propose the type mentioned, in which carbon dioxide is selective is inserted between the terminal C-H bond, the Triple bond is retained. On a nickel complex catalyst should be avoided.
- terminal alkynes with gaseous carbon dioxide carboxylated in an aprotic solvent where carboxylation without the use of a catalyst or one Catalyst precursor in an undivided electrolysis cell is carried out.
- Suitable terminal alkynes are in particular the alkynes with 2 to 9 carbon atoms. Substituents of the terminal alkynes, but also ether functions and additional double or triple bonds usually interfere with the reaction not, since the terminal, triple bonded carbon atom monocarboxylated becomes. Terminal alkynes with another acidic proton, in particular those with a hydroxyl group, however, undergo side reactions on; they are therefore not suitable from raw materials. Alkynes with a non-terminal triple bond are used according to the invention not carboxylated.
- the gaseous carbon dioxide is preferably under positive pressure at a pressure of 0.2 to 5 bar, fed to the electrolysis. Pressures of 0.5 to 1 bar are particularly preferred. pressures cause above 1 bar, but in particular above 5 bar a reduced yield and should therefore be avoided become.
- the reaction temperature can be at room temperature. Higher or lower temperatures bring no essential Benefits.
- the carboxylation is carried out in an aprotic solvent carried out.
- a particularly suitable solvent dimethylformamide; however, acetonitrile and Tetrahydrofuran can be used.
- the process according to the invention is carried out in an undivided electrolysis cell performed with a cathode and an anode, the is sufficiently pressure-tight and a gas supply for the carbon dioxide having.
- metals are suitable as cathode, not the carbon fibers used in the prior art.
- Particularly high reaction yields are achieved with silver cathodes achieved.
- Easily oxidizable materials are suitable for the anode Metals such as zinc and aluminum; magnesium is preferred.
- Electrolysis is preferably carried out under galvanostatic conditions carried out. As a rule, tensions arise maximum 20 V and currents in the range of 50 mA.
- Fig. 1 is a device for performing the represented method according to the invention.
- an electrolytic cell 2 becomes a terminal alkyne along with an aprotic one Submitted solvent.
- a carbon dioxide gas bottle 1 With the help of a carbon dioxide gas bottle 1 becomes the electrolytic cell 2, the content of which is with a magnetic stirrer 3 can be mixed with a carbon dioxide pressure applied.
- the electrodes in the electrolytic cell are included connected to a power source 4. Electrolysis takes place at galvanostatic Conditions instead.
- Fig. 2 shows an embodiment of the electrolytic cell
- Electrolysis cell forms an autoclave, which is connected to the gas supply 10 can be charged with the carbon dioxide pressure.
- anode 11 and cathode 12 are provided with a (not shown) Power source connected.
- the electrolysis cell was flushed with carbon dioxide, to remove atmospheric oxygen from the cell. That as a solvent Dimethylformamide (DMF) was used over calcium hydroxide dried, freshly distilled off and used immediately. 3 mmol of the terminal alkyne were dissolved in DMF and in submitted to the electrolytic cell. With constant stirring Carbon dioxide injected at a pressure of 0.5 bar. The electrochemical Reaction was started after 15 minutes ensure that the solution balance of carbon dioxide in DMF. The experiments were under galvanostatic Conducted conditions where there are amperages of 50 mA and voltages of a maximum of 20 V. The attempts were carried out with a silver cathode.
- DMF Dimethylformamide
- the solution was removed from the electrolytic cell removed and processed directly in a one-necked flask.
- the electrolyte was 4 mmol potassium carbonate and a Excess methyl iodide (30 mmol) added.
- the educated Acids were esterified at 50 ° C for 12 hours.
- the solution was hydrolyzed with 1 M hydrochloric acid solution and the formed esters extracted with diethyl ether, which makes all water-soluble Components separated from the organic components were.
- the diethyl ether phase was washed with water and dried over magnesium sulfate.
- the products became column chromatographic worked up. Silica gel was used as the column material and mixtures of dichloromethane and hexane are used as solvents. The products were then analyzed.
- the influence of the cathode material on the yield of the carboxylation was determined in further experiments.
- the experiments were carried out with C 7 H 15 -C ⁇ CH according to the instructions given above, the cathode material being varied.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
- Saccharide Compounds (AREA)
Description
- 1- Oktin
- 1- Nonin
- Cyclohexalacetylen
- Acetylen.
- 1,7- Oktadiin
- 1,8-Nonadiin
- Propargylether
- 2-Methyl3-butin-1-en
- Butinpentenether
- Methoxy-3-butin.
Claims (5)
- Verfahren zur Carboxylierung von terminalen Alkinen, bei demterminale Alkine eingesetzt werden, diei) in α-Stellung mindestens ein weiteres aliphatisches Kohlenstoffatom aufweisen undii) kein Proton besitzen, das eine höhere Acidität aufweist als das Proton der terminalen Dreifachbindung,aus dem terminalen Alkin und einem aprotischen Lösungsmittel eine Lösung hergestellt,
die Lösung in einer ungeteilten Elektrolysezelle, die mit einer Kathode und einer Anode ausgestattet ist, mit Kohlendioxid mit einem höheren als dem Atmosphärendruck beaufschlagt wird und
die Kathode und die Anode mit einer Stromquelle verbunden werden,
die Carboxylierung ohne einen Katalysator oder eine Katalysatorvorstufe durchgeführt und eine Kathode aus einem Metall eingesetzt wird. - Verfahren nach Anspruch 1,
dadurch gekennzeichnet, daß
terminale Alkine mit 2 bis 9 C-Atomen eingesetzt werden. - Verfahren nach Anspruch 1 oder 2,
dadurch gekennzeichnet, daß
der Druck des Kohlendioxids 0,5 bis 1 bar beträgt. - Verfahren nach Anspruch 1, 2 oder 3,
dadurch gekennzeichnet, daß
eine Kathode aus Silber eingesetzt wird. - Verfahren nach einem der Ansprüche 1 bis 4,
dadurch gekennzeichnet, daß
die Elektrolysezelle unter galvanostatischen Bedingungen betrieben wird.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19809532A DE19809532C1 (de) | 1998-03-05 | 1998-03-05 | Verfahren zur Carboxylierung von terminalen Alkinen |
DE19809532 | 1998-03-05 | ||
PCT/EP1999/001366 WO1999045173A1 (de) | 1998-03-05 | 1999-03-03 | Verfahren zur carboxylierung von terminalen alkinen |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1060294A1 EP1060294A1 (de) | 2000-12-20 |
EP1060294B1 true EP1060294B1 (de) | 2002-12-18 |
Family
ID=7859868
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99914466A Expired - Lifetime EP1060294B1 (de) | 1998-03-05 | 1999-03-03 | Verfahren zur carboxylierung von terminalen alkinen |
Country Status (6)
Country | Link |
---|---|
US (1) | US6342149B1 (de) |
EP (1) | EP1060294B1 (de) |
JP (1) | JP3325883B2 (de) |
AT (1) | ATE230040T1 (de) |
DE (2) | DE19809532C1 (de) |
WO (1) | WO1999045173A1 (de) |
Families Citing this family (24)
Publication number | Priority date | Publication date | Assignee | Title |
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CN102958888B (zh) * | 2009-12-17 | 2015-11-25 | 新加坡科技研究局 | 末端炔的羧基化 |
CN103168022B (zh) * | 2010-08-20 | 2016-02-17 | 巴斯夫欧洲公司 | 制备丙炔酸或其衍生物的方法 |
ES2488315T3 (es) | 2011-12-23 | 2014-08-26 | Sociedad Española De Carburos Metálicos, S.A. | Síntesis por electrocarboxilación para obtener intermedios útiles para la síntesis de derivados de span |
US9133079B2 (en) | 2012-01-13 | 2015-09-15 | Siluria Technologies, Inc. | Process for separating hydrocarbon compounds |
US9969660B2 (en) | 2012-07-09 | 2018-05-15 | Siluria Technologies, Inc. | Natural gas processing and systems |
WO2014089479A1 (en) | 2012-12-07 | 2014-06-12 | Siluria Technologies, Inc. | Integrated processes and systems for conversion of methane to multiple higher hydrocarbon products |
US10047020B2 (en) | 2013-11-27 | 2018-08-14 | Siluria Technologies, Inc. | Reactors and systems for oxidative coupling of methane |
WO2015105911A1 (en) | 2014-01-08 | 2015-07-16 | Siluria Technologies, Inc. | Ethylene-to-liquids systems and methods |
US10377682B2 (en) | 2014-01-09 | 2019-08-13 | Siluria Technologies, Inc. | Reactors and systems for oxidative coupling of methane |
US9701597B2 (en) | 2014-01-09 | 2017-07-11 | Siluria Technologies, Inc. | Oxidative coupling of methane implementations for olefin production |
CN103789790B (zh) * | 2014-02-11 | 2016-09-14 | 华东师范大学 | 不对称合成具有光学活性的苯乙烯环状碳酸酯的方法 |
US10793490B2 (en) | 2015-03-17 | 2020-10-06 | Lummus Technology Llc | Oxidative coupling of methane methods and systems |
US9334204B1 (en) | 2015-03-17 | 2016-05-10 | Siluria Technologies, Inc. | Efficient oxidative coupling of methane processes and systems |
US20160289143A1 (en) | 2015-04-01 | 2016-10-06 | Siluria Technologies, Inc. | Advanced oxidative coupling of methane |
US9328297B1 (en) | 2015-06-16 | 2016-05-03 | Siluria Technologies, Inc. | Ethylene-to-liquids systems and methods |
WO2017065947A1 (en) | 2015-10-16 | 2017-04-20 | Siluria Technologies, Inc. | Separation methods and systems for oxidative coupling of methane |
US9944573B2 (en) | 2016-04-13 | 2018-04-17 | Siluria Technologies, Inc. | Oxidative coupling of methane for olefin production |
US20180186707A1 (en) * | 2016-12-02 | 2018-07-05 | Siluria Technologies, Inc. | Ethylene-to-liquids systems and methods |
US20180169561A1 (en) | 2016-12-19 | 2018-06-21 | Siluria Technologies, Inc. | Methods and systems for performing chemical separations |
JP2020521811A (ja) | 2017-05-23 | 2020-07-27 | ラマス テクノロジー リミテッド ライアビリティ カンパニー | メタン酸化カップリングプロセスの統合 |
KR20200051583A (ko) | 2017-07-07 | 2020-05-13 | 루머스 테크놀로지 엘엘씨 | 메탄의 산화적 커플링를 위한 시스템 및 방법 |
CN113117713B (zh) * | 2019-12-31 | 2023-07-04 | 中国石油化工股份有限公司 | 一种负载型羧化催化剂、其制备方法及应用 |
CN113117757B (zh) * | 2019-12-31 | 2023-04-07 | 中国石油化工股份有限公司 | 一种合成苯丙炔酸的体相催化剂及其制备和工艺 |
CN113117726B (zh) * | 2019-12-31 | 2023-04-07 | 中国石油化工股份有限公司 | 一种合成苯丙炔酸的成型催化剂及其制备和应用 |
-
1998
- 1998-03-05 DE DE19809532A patent/DE19809532C1/de not_active Expired - Fee Related
-
1999
- 1999-03-03 JP JP2000534700A patent/JP3325883B2/ja not_active Expired - Fee Related
- 1999-03-03 AT AT99914466T patent/ATE230040T1/de not_active IP Right Cessation
- 1999-03-03 WO PCT/EP1999/001366 patent/WO1999045173A1/de active IP Right Grant
- 1999-03-03 DE DE59903829T patent/DE59903829D1/de not_active Expired - Fee Related
- 1999-03-03 US US09/623,418 patent/US6342149B1/en not_active Expired - Fee Related
- 1999-03-03 EP EP99914466A patent/EP1060294B1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP1060294A1 (de) | 2000-12-20 |
JP3325883B2 (ja) | 2002-09-17 |
ATE230040T1 (de) | 2003-01-15 |
DE19809532C1 (de) | 1999-04-15 |
DE59903829D1 (de) | 2003-01-30 |
WO1999045173A1 (de) | 1999-09-10 |
US6342149B1 (en) | 2002-01-29 |
JP2002506119A (ja) | 2002-02-26 |
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