EP0902846A1 - Verfahren zur herstellung von phthaliden - Google Patents
Verfahren zur herstellung von phthalidenInfo
- Publication number
- EP0902846A1 EP0902846A1 EP97921810A EP97921810A EP0902846A1 EP 0902846 A1 EP0902846 A1 EP 0902846A1 EP 97921810 A EP97921810 A EP 97921810A EP 97921810 A EP97921810 A EP 97921810A EP 0902846 A1 EP0902846 A1 EP 0902846A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- phthalic acid
- alkyl
- phthalides
- hydrogen
- anodic
- 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.)
- Granted
Links
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
-
- 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
- C25B3/01—Products
- C25B3/05—Heterocyclic compounds
-
- 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
- C25B3/01—Products
- C25B3/07—Oxygen containing compounds
-
- 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
- C25B3/01—Products
- C25B3/11—Halogen containing compounds
Definitions
- a disadvantage of the described methods is the expenditure on equipment associated with the use of divided electrolysis cells, since in this case 2 cell circles are required.
- working with 2 cell circles is associated with the following further disadvantages:
- the cell circles must be separated by a membrane or a diaphragm; this means a loss of energy through ohmic heat.
- at least one chamber is usually charged with an aqueous (> 80% H 2 O) conductive salt solution.
- an aqueous (> 80% H 2 O) conductive salt solution In the case of cathodic reductions, this is the anolyte.
- the compulsion to do so severely limits the scope for using the anode reaction. Normally only hydrogen is produced as the anode product. Furthermore, there is a risk with the known methods that anode corrosion and poisoning of the cathodes occur.
- the technical problem underlying the invention was therefore to provide a technically simpler process for the production of phthalides in high purity and good yields, which does not have the disadvantages of the prior art and in particular the possibility of using the Anode reaction opened to produce products other than hydrogen.
- R 1 , R 2 , R 3 and R 4 independently of one another hydrogen, C ⁇ ⁇ bis
- R 5 and R 6 a) independently of one another -COOH or COOX, where X is Ci to C 4 alkyl,
- R 5 and R 6 together -CO-O-CO-.
- Particularly preferred are the derivatives of phthalic acid in which R 1, R 2, R 3 and R 4 are hydrogen and in particular the phthalic acid di (Ci to C 3 alkyl) esters, especially the dimethyl phthalate. 5
- Electrodes made of graphite or carbon are particularly suitable as electrode materials (both cathode and anode).
- the electrolyte is usually a 2 to 15 40% strength by weight solution of phthalic acid or a phthalic acid derivative in an organic solvent which preferably contains less than 25, particularly preferably less than 5% by weight of water.
- Suitable organic solvents are, in particular, 0 aliphatic C ⁇ to Ca alcohols, in particular methanol or ethanol, or a mixture of such alcohols with a carboxamide such as dimethylformamide or t-butylformamide.
- the electrolytes generally contain alkyl sulfates, for example methyl sulfate, or quaternary ammonium salts, in particular tetra (Ci to C 4 alkyl) ammonium halogens or tetrafluoroborates, usually in amounts of 0.4 to 10 wt. -% based on the electrolyte.
- alkyl sulfates for example methyl sulfate
- quaternary ammonium salts in particular tetra (Ci to C 4 alkyl) ammonium halogens or tetrafluoroborates, usually in amounts of 0.4 to 10 wt. -% based on the electrolyte.
- anodic coupling process it is advisable to use conventional organic compounds as anodic depolarizer, the suitability of which is generally known to the person skilled in the art for the electrochemical oxidation.
- Some of the anodic coupling processes are preferably carried out in the presence of a mediator. Possible 5 anodic coupling processes and their mediatization are described, for example, in D. Kyriakou, Modern Electroorganic Chemistry, Springer, Berlin 1994, in Chapter 4.2.
- Halogen compounds especially bromides or iodides, are particularly suitable as mediators.
- the other process parameters such as temperature and current density are concerned, these are not critical as long as they are within the normal range for electrochemical conversion of organic compounds. They are specified, for example, in DE-A-2 510 920.
- an electrolysis cell consisting of ten bipolar switched ring disks made of graphite, area per side: 147 dm 2 , with an electrode spacing of 0.7 mm, a solution of 500 g dimethyl phthalate (2.56 mol), 1600 g t. -Butylformamide and 375 g of methanol with 25 g of tetrabutylammonium tetrafluoroborate at a current of 2.5 A for 11.5 h at 60 ° C electrolyzed.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Furan Compounds (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19618854 | 1996-05-10 | ||
| DE19618854A DE19618854A1 (de) | 1996-05-10 | 1996-05-10 | Verfahren zur Herstellung von Phthaliden |
| PCT/EP1997/002185 WO1997043464A1 (de) | 1996-05-10 | 1997-04-28 | Verfahren zur herstellung von phthaliden |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0902846A1 true EP0902846A1 (de) | 1999-03-24 |
| EP0902846B1 EP0902846B1 (de) | 2000-07-26 |
Family
ID=7793943
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP97921810A Expired - Lifetime EP0902846B1 (de) | 1996-05-10 | 1997-04-28 | Verfahren zur herstellung von phthaliden |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US6063256A (de) |
| EP (1) | EP0902846B1 (de) |
| JP (1) | JP3946260B2 (de) |
| CN (1) | CN1058302C (de) |
| CA (1) | CA2254788C (de) |
| DE (2) | DE19618854A1 (de) |
| ES (1) | ES2150770T3 (de) |
| WO (1) | WO1997043464A1 (de) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AR018507A1 (es) | 1997-09-19 | 2001-11-28 | Basf Se | Proceso de recuperacion de un compuesto derivado del acido ftalico de una mezcla de reaccion en la que se sintetiza este compuesto |
| DE19741423A1 (de) * | 1997-09-19 | 1999-03-25 | Basf Ag | Verfahren zur Herstellung von Phthaliden |
| DE19808296A1 (de) * | 1998-02-27 | 1999-09-02 | Basf Ag | Verfahren zur selektiven Hydrolyse von Acetalen bzw. Ketalen in Gegenwart von Phthaliden |
| DE19944990A1 (de) | 1999-09-20 | 2001-03-22 | Basf Ag | Verfahren zur elektrolytischen Umwandlung von organischen Verbindungen |
| DE19944989A1 (de) | 1999-09-20 | 2001-03-22 | Basf Ag | Verfahren zur elektrolytischen Umwandlung von Furanderivaten |
| CN1182127C (zh) * | 2000-06-28 | 2004-12-29 | 中国医学科学院药物研究所 | 新的取代的2-苯并[c]呋喃酮化合物,其制备方法以及包含它们的药物组合物 |
| DE10057888A1 (de) * | 2000-11-22 | 2002-05-23 | Basf Ag | Herstellung von Butantetracarbonsäurederivaten mittels gekoppelter Elektrosynthese |
| DE10058304A1 (de) * | 2000-11-24 | 2002-05-29 | Basf Ag | Verfahren zur Herstellung von alkoxylierten Carbonylverbindungen durch ein anodisches Oxidationsverfahren unter Nutzung der kathodischen Koppelreaktion zur organischen Synthese |
| CN104379814A (zh) * | 2012-06-15 | 2015-02-25 | 巴斯夫欧洲公司 | 在亲核试剂存在下进行有机基质的阳极氧化 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2510920A1 (de) * | 1975-03-13 | 1976-09-30 | Basf Ag | Verfahren zur elektrochemischen herstellung von phthalid |
| DE2630927A1 (de) * | 1976-07-09 | 1978-01-19 | Basf Ag | Verfahren zur herstellung von phthalidcarbonsaeure-(5) |
-
1996
- 1996-05-10 DE DE19618854A patent/DE19618854A1/de not_active Withdrawn
-
1997
- 1997-04-28 ES ES97921810T patent/ES2150770T3/es not_active Expired - Lifetime
- 1997-04-28 US US09/125,019 patent/US6063256A/en not_active Expired - Fee Related
- 1997-04-28 CA CA002254788A patent/CA2254788C/en not_active Expired - Fee Related
- 1997-04-28 WO PCT/EP1997/002185 patent/WO1997043464A1/de not_active Ceased
- 1997-04-28 EP EP97921810A patent/EP0902846B1/de not_active Expired - Lifetime
- 1997-04-28 DE DE59702087T patent/DE59702087D1/de not_active Expired - Fee Related
- 1997-04-28 JP JP54044397A patent/JP3946260B2/ja not_active Expired - Fee Related
- 1997-04-28 CN CN97192040A patent/CN1058302C/zh not_active Expired - Fee Related
Non-Patent Citations (1)
| Title |
|---|
| See references of WO9743464A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3946260B2 (ja) | 2007-07-18 |
| ES2150770T3 (es) | 2000-12-01 |
| WO1997043464A1 (de) | 1997-11-20 |
| EP0902846B1 (de) | 2000-07-26 |
| CA2254788C (en) | 2005-03-01 |
| DE19618854A1 (de) | 1997-11-13 |
| CN1058302C (zh) | 2000-11-08 |
| JP2000511592A (ja) | 2000-09-05 |
| US6063256A (en) | 2000-05-16 |
| CA2254788A1 (en) | 1997-11-20 |
| DE59702087D1 (de) | 2000-08-31 |
| CN1210564A (zh) | 1999-03-10 |
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