EP1769103A1 - Verfahren zur herstellung von prim[ren aminen mit einer an ein aliphatisches oder cycloaliphatisches c-atom gebunden prim[ren aminogruppe und einer cyclopropyl-einheit - Google Patents
Verfahren zur herstellung von prim[ren aminen mit einer an ein aliphatisches oder cycloaliphatisches c-atom gebunden prim[ren aminogruppe und einer cyclopropyl-einheitInfo
- Publication number
- EP1769103A1 EP1769103A1 EP05760066A EP05760066A EP1769103A1 EP 1769103 A1 EP1769103 A1 EP 1769103A1 EP 05760066 A EP05760066 A EP 05760066A EP 05760066 A EP05760066 A EP 05760066A EP 1769103 A1 EP1769103 A1 EP 1769103A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- alkyl
- oxime
- substituted
- formula
- cyclopropyl
- 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
Definitions
- the present invention relates to a process for the preparation of primary amines having a primary amino group bonded to an aliphatic or cycloaliphatic carbon atom and a cyclopropyl moiety.
- amine A which comprises oximes having a cyclopropyl unit or oxime derivatives in which the Hydrogen atom in the oxime group is replaced by an alkyl or acyl group (oxime O) in a divided Elektrolysezel ⁇ le in an anhydrous electrolyte solution at a temperature of 50 to 100 0 C at the cathode reduced.
- amines A which are compounds of the general formula H 2 N-CHRiR 2 (formula I), where R 1 is hydrogen, C 3 - to C 8 -cycloalkyl, C 1 - to C 20 alkyl, C 6 -C 20 -aryl or together with R 2 and the methine group between R 1 and R 2 is a C 5 - to Ce-cycloalkyl group, where the abovementioned hydrocarbon radicals are C 1 - to C 6 Alkoxy, or halogen may be substituted, and
- R 2 C 3 - to C 8 -cycloalkyl, C 1 - to C 20 -alkyl, C 6 - to C 20 -aryl or, together with R 2 and the methine group between R 1 and R 2 , a C 5 - to C 6 cycloalkyl group where the abovementioned hydrocarbon radicals can be substituted by C 1 -C 6 -alkoxy, NH 2 -, C 1 - to C 2 o -alkylamino or halogen, with the proviso that at least one of the radicals R 1 or R 2 is cyclopropyl or substituted by cyciopropyl.
- R 5 ON GR 3 C 4 (formula Ii), wherein R 3 has the same meaning as R 1 in formula I, R 4 has the same meaning as R 2 in formula I and the radicals R 3 and R 4 optionally substituted by 1-hydroxyimino (Cr to C 2 o) alkyl, 1- (C 1 to C 6 -Akkoxy) imino (Cr bis C 20 ) alkyl radicals or 1- (C 1 to C 6 acyloxy) (Cr to C 20 ) alkyl radicals are substituted and R 5 is hydrogen, C 1 - to C 6 alkyl or C 1 - to C 6 acyl means.
- phenyl ring is optionally substituted by halogen atoms or C 1 - to C 4 alkoxy groups.
- the starting compounds for the amines A of the formula Ia are the corresponding oximes O of the general formula (IIa),
- phenyl ring is optionally substituted by halogen atoms or C 1 - to C 4 alkoxy groups
- the catholyte contains a solvent in addition to an amine formed in the course of the reaction A and an oxime.
- these are the inert solvents which are generally customary in organic chemistry, such as dimethyl carbonate, propylene carbonate, tetrahydrofuran, dimethoxyethane, acetonitrile or dimethylformamide.
- C is preferably used r 4 -alkyl to C as the solvent.
- C 5 -C 7 -hydrocarbons such as, for example, hexane, are also suitable as solvents.
- To prepare the conductivity of the catholyte generally includes a Mineralkla ⁇ acid, preferably sulfuric acid or an alkali (C r to C 4) -alkylalkoholat, preferably Natri ⁇ environmentally methoxide.
- an electrolyte salt is added to the anolyte and optionally also to the catholyte (in addition to one of the above-mentioned conductivity-producing agents).
- it han ⁇ delt are generally alkali, tetra (C 1 - to C 6 -alkyl) ammonium, tri preferably (Ci to C6 alkyl) -methylammoniumsalze.
- Suitable counterions are sulfate, hydrogen sulfate, alkyl sulfates, aryl sulfates, halides, phosphates, carbonates, alkyl phosphates, alkyl carbonates, nitrate, alcoholates, tetrafluoroborate, hexafluorophosphate or perchlorate.
- MTBS methyltributylammonium methylsulfates
- methyltriethylammonium methylsulfate methyltri-propylmethylammonium methylsulfates.
- the water content in the catholyte and anolyte is generally less than 2, preferably less than 1 wt .-%, more preferably less than 0.5 wt .-%. It should be noted that in the reduction of the oxime O to the amine A water is formed in stoichiometric amounts. If, when the process is carried out discontinuously, the starting material is sufficiently dilute and the catholyte and anolyte at the beginning of the reaction have a water content of less than 0.1% by weight, it is generally unnecessary to do so during the reaction tion to remove formed water from the electrolyte. Otherwise, the water content of the electrolyte can be determined by customary methods, e.g. be lowered by distillation.
- the process according to the invention can be carried out in all customary divided electrolysis cell types in order to be able to conclude within the scope of the process according to the invention that starting materials such as products undergo chemical side reactions as a result of the cathode process.
- starting materials such as products undergo chemical side reactions as a result of the cathode process.
- one works continuously in divided flow cells.
- Divided cells with plane-parallel electrode arrangement are preferably used.
- separation media ion exchange membranes, microporous membranes, diaphragms, filter fabrics of non-electron-conducting materials, glass frits and porous ceramics can be used.
- ion exchange membranes in particular cation exchange membranes, are used.
- These conductive membranes are commercially available, for example, under the trade name Nafion® (from ET DuPont de Nemours and Company) and Gore Select® (from WL Gore & Associates, Inc.).
- the cathodes used are preferably those in which the cathode surface is formed from a material with high hydrogen overvoltage, for example from lead, zinc, tin, nickel, mercury, cadmium, copper or alloys of these metals or glassy cabon, graphite or diamond.
- diamond electrodes e.g. in EP-A-1036863 are beschrie ⁇ ben.
- anodes preferably those which are also referred to as cathode materials.
- acidic anolyte preference is given to using platinum, diamond, glassy carbon or graphite anodes or the dimensionally stable anodes (DSA) known to the person skilled in the art. If the anolyte is basic, preferably stainless steel is used.
- the anodic reaction can be chosen freely, preferably the C 1 -C 4 -alcohol used as solvent is oxidized there.
- methanol methyl formate, formaldehyde dimethyl acetal or dimethyl carbonate are formed.
- a sulfuric acid solution diluted with a C 1 -C 4 -alcohol is used for this purpose.
- the current densities at which the process is carried out are generally 1 to 1000, preferably 10 to 100 mA / cm 2 .
- the current densities at which the process is carried out are generally 1 to 1000, preferably 10 to 100 mA / cm 2 .
- Higher pressures are preferably used when working at higher temperatures in order to avoid boiling of the starting compounds or solvents.
- the electrolyte solution is worked up by general separation methods.
- the catholyte is generally first distilled and the individual compounds in the form of different fractions separately ge won. Further purification can be carried out, for example, by crystallization, distillation or by chromatography.
- Apparatus electrolysis system with catholyte and anolyte circulation and two split electrolytic cells connected in series
- Anode 2 graphite anodes, effective area per 300 cm 2 cathode: 2 lead cathodes, effective area 300 cm 2 each
- Membrane proton-conducting perfluorinated membrane with sulfonic acid groups, eg National 324 from DuPont Distance of electrode ⁇ Diaphragm: 6 mm
- composition Anolyte 979.2 g MeOH, 20.8 g H2SO4, 96% pure
- composition catholyte 5000 g MeOH, 400 g sodium methoxide sol., 30% in MeOH, 600 g cyclopropylphenylmethanone oxime 1
- Apparatus electrolysis cell with catholyte and anolyte circulation
- Anode graphite
- Cathode lead
- Membrane proton-conducting perfluorinated membrane with sulfonic acid groups, eg Nafion 117 from DuPont
- composition of anolyte 117.5 g of MeOH, 2.5 g of H2SO4, 96% strength
- Composition of catholyte 94.0 g of MeOH, 1.0 g of H2SO4, 96% strength, 5 g of cyclopropylphenylmethanone oxime 1
- Apparatus electrolytic cell with catholyte and anolyte circulation
- Anode graphite
- Cathode lead
- Membrane proton-conducting perfluorinated membrane with sulfonic acid groups, eg National 324 from DuPont
- composition Anolyte 783 g MeOH, 17 g H 2 SO 4 , 96% pure
- composition catholyte 2600 g MeOH, 100 g NaOMe, 30% in MeOH,
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)
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004033718A DE102004033718A1 (de) | 2004-07-13 | 2004-07-13 | Verfahren zur Herstellung von primären Aminen mit einer an ein aliphatisches oder cycloaliphatisches C-Atom gebunden primären Aminogruppe und einer Cyclopropyl-Einheit |
PCT/EP2005/007400 WO2006005531A1 (de) | 2004-07-13 | 2005-07-08 | Verfahren zur herstellung von primären aminen mit einer an ein aliphatisches oder cycloaliphatisches c-atom gebunden primären aminogruppe und einer cyclopropyl-einheit |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1769103A1 true EP1769103A1 (de) | 2007-04-04 |
EP1769103B1 EP1769103B1 (de) | 2010-05-05 |
Family
ID=35276370
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05760066A Not-in-force EP1769103B1 (de) | 2004-07-13 | 2005-07-08 | Elektrochemisches verfahren zur herstellung cyclopropylbenzylaminen |
Country Status (7)
Country | Link |
---|---|
US (1) | US7411094B2 (de) |
EP (1) | EP1769103B1 (de) |
JP (1) | JP4587329B2 (de) |
CN (1) | CN1985024B (de) |
AT (1) | ATE466972T1 (de) |
DE (2) | DE102004033718A1 (de) |
WO (1) | WO2006005531A1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008003620A2 (de) * | 2006-07-04 | 2008-01-10 | Basf Se | Elektrochemische herstellung sterisch gehinderter amine |
EP2751308B1 (de) | 2011-09-01 | 2017-03-22 | Johannes Gutenberg-Universität Mainz | Verfahren zur kathodischen desoxygenierung von amiden und estern |
CN110683957B (zh) * | 2019-10-25 | 2022-10-28 | 湖南比德生化科技股份有限公司 | 一种二氨基萘的合成与分离提纯方法 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19620861A1 (de) * | 1996-05-23 | 1997-11-27 | Basf Ag | Verfahren zur elektrochemischen Reduktion organischer Verbindungen |
JP3568394B2 (ja) | 1998-07-07 | 2004-09-22 | 独立行政法人 科学技術振興機構 | 低抵抗n型ダイヤモンドの合成法 |
-
2004
- 2004-07-13 DE DE102004033718A patent/DE102004033718A1/de not_active Withdrawn
-
2005
- 2005-07-08 DE DE502005009531T patent/DE502005009531D1/de active Active
- 2005-07-08 US US11/571,625 patent/US7411094B2/en not_active Expired - Fee Related
- 2005-07-08 JP JP2007520722A patent/JP4587329B2/ja not_active Expired - Fee Related
- 2005-07-08 EP EP05760066A patent/EP1769103B1/de not_active Not-in-force
- 2005-07-08 AT AT05760066T patent/ATE466972T1/de not_active IP Right Cessation
- 2005-07-08 WO PCT/EP2005/007400 patent/WO2006005531A1/de active Application Filing
- 2005-07-08 CN CN2005800235311A patent/CN1985024B/zh not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO2006005531A1 * |
Also Published As
Publication number | Publication date |
---|---|
JP2008505953A (ja) | 2008-02-28 |
US7411094B2 (en) | 2008-08-12 |
CN1985024A (zh) | 2007-06-20 |
EP1769103B1 (de) | 2010-05-05 |
JP4587329B2 (ja) | 2010-11-24 |
CN1985024B (zh) | 2010-12-29 |
DE502005009531D1 (de) | 2010-06-17 |
US20080064901A1 (en) | 2008-03-13 |
DE102004033718A1 (de) | 2006-02-16 |
WO2006005531A1 (de) | 2006-01-19 |
ATE466972T1 (de) | 2010-05-15 |
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