WO2002048080A2 - Verfahren zur herstellung von 1-(2,2,6-trimethylcyclohexyl)-3-alkanolen - Google Patents
Verfahren zur herstellung von 1-(2,2,6-trimethylcyclohexyl)-3-alkanolen Download PDFInfo
- Publication number
- WO2002048080A2 WO2002048080A2 PCT/EP2001/014097 EP0114097W WO0248080A2 WO 2002048080 A2 WO2002048080 A2 WO 2002048080A2 EP 0114097 W EP0114097 W EP 0114097W WO 0248080 A2 WO0248080 A2 WO 0248080A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cyclohexen
- trimethyl
- catalysts
- alkene
- trimethylcyclohexyl
- 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.)
- Ceased
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
- C07C29/17—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by hydrogenation of carbon-to-carbon double or triple bonds
- C07C29/172—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by hydrogenation of carbon-to-carbon double or triple bonds with the obtention of a fully saturated alcohol
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
- C07C29/17—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by hydrogenation of carbon-to-carbon double or triple bonds
- C07C29/175—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by hydrogenation of carbon-to-carbon double or triple bonds with simultaneous reduction of an oxo group
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11B—PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
- C11B9/00—Essential oils; Perfumes
- C11B9/0026—Essential oils; Perfumes compounds containing an alicyclic ring not condensed with another ring
- C11B9/0034—Essential oils; Perfumes compounds containing an alicyclic ring not condensed with another ring the ring containing six carbon atoms
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07B—GENERAL METHODS OF ORGANIC CHEMISTRY; APPARATUS THEREFOR
- C07B2200/00—Indexing scheme relating to specific properties of organic compounds
- C07B2200/09—Geometrical isomers
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C2601/00—Systems containing only non-condensed rings
- C07C2601/12—Systems containing only non-condensed rings with a six-membered ring
- C07C2601/14—The ring being saturated
Definitions
- the present invention relates to a process of 1- (2,2,6-trimethylcyclohexyl) -3-alkanols with an increased content of trans isomers.
- the hydrogenated products are mixtures of isomers of the formula III and IV, in which the actual odor-imparting component is the trans isomer (cf. EP
- R means methyl or ethyl.
- trans isomer is formed in those in DE 2 455 761 AI and DE 2 807 584
- the hydrogenation using ruthenium catalysts leads to a trans content of greater than 15%, based on the total amount of l- (2,2,6-trimethylcyclohexyl) -3-alkanol, corresponding to a trans / cis ratio greater than 1: 5.5.
- the trans content here is preferably approximately 20%.
- the ruthenium used as a catalyst is preferably applied to a support. Materials such as activated carbon, aluminum oxide or silicon dioxide are preferred for this.
- the concentration of the ruthenium catalyst on the carrier material is in the range from 5 to 10% by weight.
- the ruthenium can also be generated in situ by reduction with hydrogen from ruthenium tetroxide or ruthenium tetroxide hydrate before the start or during the hydrogenation and, if appropriate, can be deposited on one of the supports described above.
- the weight ratio of ruthenium catalyst used to the l- (2,6,6-trimethyl-l or 2-cyclohexen-l-yl) -l-alken-3-ones is preferably 0.001 to 0.1: 1, particularly preferably 0.01 to 0.05: 1.
- the hydrogen pressure during the hydrogenation can be 1 to 100 bar, a range from 10 to 20 bar being preferred.
- the temperature during the hydrogenation can be between 20 and 250 ° C. A range between 100 and is preferred
- Suitable solvents are substances such as alcohols, e.g. Ethanol, such as ether, e.g. Tetrahydrofuran and ethylene glycol dimethyl ether, such as esters, e.g. Ethyl acetate and such as hydrocarbons e.g. Hexane and cyclohexane.
- alcohols e.g. Ethanol
- ether e.g. Tetrahydrofuran
- ethylene glycol dimethyl ether such as esters, e.g. Ethyl acetate and such as hydrocarbons e.g. Hexane and cyclohexane.
- ruthenium catalysts according to the invention also has the positive effect of leading to complete conversion. In contrast to the im
- the trans / cis ratio here can preferably be at a trans content of greater than 30%, based on the total amount of l- (2,2,6-trimethylcyclohexyl) -3-alkanol, corresponding to a trans / cis Ratio greater than 1: 2.
- the trans content is preferably between 30 and 40%.
- the l- (2,6,6-trimethyl-l or 2-cyclohexen-l-yl) -l-alkene-3-ol can be prepared in a manner known per se by reduction from l- (2,6,6-trimethyl -l or 2-cyclohexen-l-yl) -l-alkene-1-one are prepared.
- the reduction can take place by means of reducing agents known per se. This includes e.g. Sodium borohydride.
- catalysts for the hydrogenation of l- (2,6,6-trimethyl-l or 2-cyclohexen-l-yl) -l-alkene-3-ols for example, those are used, such as those e.g. in Houben-Weyl, Methods of Organic Chemistry, Vol. IV / lc, pp. 18-28.
- Hydrogenation catalysts which contain one or more elements from groups Ib, VIb and VIII of the Periodic Table of the Elements, in particular copper, chromium, cobalt, rhodium, ruthenium, nickel, palladium and platinum, are preferably used.
- the catalysts used according to the invention are generally applied to a support. Materials such as activated carbon, aluminum oxide or silicon dioxide are preferred for this.
- the concentration of the catalysts on the support material is preferably in the range of 5 and 10%.
- the catalysts used according to the invention can also be generated in situ by reduction with hydrogen from the corresponding oxides or salts before the start or during the hydrogenation and, if appropriate, can be deposited on one of the supports described above.
- the weight ratio of catalyst used to the l- (2,6,6-trimethyl-l or 2-cyclohexen-l-yl) -l-alken-3-ols is preferably 0.001 to 0.1: 1.
- a ratio of 0.01 to 0.05: 1 is particularly preferred.
- the hydrogen pressure during the hydrogenation can be 1 to 100 bar, a range between 1 and 20 bar is preferred, a range between 5 and 15 bar is particularly preferred.
- the temperature during the hydrogenation can be between 20 and 250 ° C., a range between 20 and 100 ° C. is preferred, a range between 20 and 50 ° C. is particularly preferred.
- Suitable solvents are substances such as alcohols, e.g. Ethanol, such as ether, e.g. Tetrahydrofuran and ethylene glycol dimethyl ether such as esters, e.g. Ethyl acetate and such as hydrocarbons e.g. Hexane and cyclohexane.
- alcohols e.g. Ethanol
- ether e.g. Tetrahydrofuran
- ethylene glycol dimethyl ether such as esters, e.g. Ethyl acetate and such as hydrocarbons e.g. Hexane and cyclohexane.
- Example 1 The following examples explain the process according to the invention in more detail. However, the application of the method according to the invention is not restricted to these examples.
- Example 1
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Wood Science & Technology (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2002227980A AU2002227980A1 (en) | 2000-12-15 | 2001-12-03 | Method for producing 1-(2,2,6-trimethylcyclohexyl)-3-alkanols |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10062771.4 | 2000-12-15 | ||
| DE10062771A DE10062771A1 (de) | 2000-12-15 | 2000-12-15 | Verfahren zur Herstellung von 1-(2,2,6-Trimethylcyclohexyl)-3-alkanolen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO2002048080A2 true WO2002048080A2 (de) | 2002-06-20 |
| WO2002048080A3 WO2002048080A3 (de) | 2002-08-22 |
Family
ID=7667428
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2001/014097 Ceased WO2002048080A2 (de) | 2000-12-15 | 2001-12-03 | Verfahren zur herstellung von 1-(2,2,6-trimethylcyclohexyl)-3-alkanolen |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20020082457A1 (de) |
| AU (1) | AU2002227980A1 (de) |
| DE (1) | DE10062771A1 (de) |
| WO (1) | WO2002048080A2 (de) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10243466A1 (de) * | 2002-09-19 | 2004-04-08 | Symrise Gmbh & Co. Kg | Verfahren zur Herstellung von Trimethylcyclohexyl-alkan-3-olen mit einem hohen Anteil an trans-Isomeren |
| WO2005079337A2 (en) * | 2004-02-17 | 2005-09-01 | Merck & Co., Inc. | Process for making ep4 agonists and intermediates thereof |
| DE102005036672A1 (de) * | 2005-08-04 | 2007-02-08 | Symrise Gmbh & Co. Kg | Verfahren zur Herstellung von 1-(2,2,6-Trimethylcyclohexyl)-hexan-3-ol |
| ES2730024T3 (es) | 2014-11-18 | 2019-11-07 | Basf Se | Procedimiento de preparación de 1-(2,6,6-trimetilciclohexil)-alcan-3-oles |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2807584C3 (de) * | 1978-02-22 | 1981-05-07 | Dragoco Gerberding & Co Gmbh, 3450 Holzminden | Fixateur für Parfümkompositionen |
| DE3471092D1 (en) * | 1983-03-09 | 1988-06-16 | Firmenich & Cie | Composition essentially consisting of trans-1-(2,6,6-trimethylcyclohexyl)-hexan-3-ol, utilization of same and process for its preparation; cycloaliphatic ketone and alcohol intermediates |
| DD243021A1 (de) * | 1985-11-25 | 1987-02-18 | Miltitz Chem Werk | Verfahren zur regioselektiven hydrierung von cycloalkenylvinylaldehyden |
-
2000
- 2000-12-15 DE DE10062771A patent/DE10062771A1/de not_active Ceased
-
2001
- 2001-12-03 AU AU2002227980A patent/AU2002227980A1/en not_active Abandoned
- 2001-12-03 WO PCT/EP2001/014097 patent/WO2002048080A2/de not_active Ceased
- 2001-12-12 US US10/015,320 patent/US20020082457A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| AU2002227980A1 (en) | 2002-06-24 |
| US20020082457A1 (en) | 2002-06-27 |
| WO2002048080A3 (de) | 2002-08-22 |
| DE10062771A1 (de) | 2002-07-11 |
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