EP1322586A2 - Method for producing benzyl acetone - Google Patents

Method for producing benzyl acetone

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Publication number
EP1322586A2
EP1322586A2 EP01980276A EP01980276A EP1322586A2 EP 1322586 A2 EP1322586 A2 EP 1322586A2 EP 01980276 A EP01980276 A EP 01980276A EP 01980276 A EP01980276 A EP 01980276A EP 1322586 A2 EP1322586 A2 EP 1322586A2
Authority
EP
European Patent Office
Prior art keywords
catalyst
palladium
benzylacetone
hydrogenation
activated carbon
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.)
Withdrawn
Application number
EP01980276A
Other languages
German (de)
French (fr)
Inventor
Walter Kuhn
Hans-Ulrich Funk
Gerhard Senft
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Symrise AG
Original Assignee
Haarmann and Reimer GmbH
Symrise AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Haarmann and Reimer GmbH, Symrise AG filed Critical Haarmann and Reimer GmbH
Publication of EP1322586A2 publication Critical patent/EP1322586A2/en
Withdrawn legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
    • C07C45/61—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups
    • C07C45/62—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups by hydrogenation of carbon-to-carbon double or triple bonds

Definitions

  • Benzylacetone is a valuable fragrance and aroma substance that is found in cocoa beans. Its smell is similar to that of jasmine and strawberry. Benzylacetone is used in fragrance compositions and flavors (Malasiewicz, Perfumery and Cosmetics, p. 211, 4/88, K. Bauer, A. Garbe, Common Fragrance and Flavor Materials, p. 73, VCH, Weinheim, 1985).
  • nickel catalysts for hydrogenation with hydrogen, for example, nickel catalysts (Chem. Pharm. Bull., 1990, 38 (6), 1720), in particular Raney nickel (Ber. Dtsch. Chem. Ges. 56, 2174 (1923)) are used.
  • PL 153267 describes an activated nickel catalyst on aluminum oxide, which can be used to produce benzylacetone in 82% yield from benzylidene acetone at 100-150 ° C.
  • Precious metal catalysts such as platinum black are also known for the production of benzylacetone (Ann. Chim. 9, (1), 90, (1914)). It is also known to produce benzylacetone with a catalyst made of palladium on activated carbon in a solution of acetic acid-ammonium formate with a yield of 78% (Synth. Commun. (1998), 28 (22), 4193).
  • a process for the preparation of benzylacetone by hydrogenation of benzylidene acetone has been found, which is characterized in that the hydrogenation is carried out in the presence of a palladium catalyst on activated carbon and / or a palladium catalyst on aluminum oxide.
  • the process according to the invention is preferably carried out without a solvent. With the aid of the process according to the invention, benzylacetone can be produced economically in high yields.
  • the handling of palladium as a catalyst is particularly advantageous since the catalyst is not a hazardous substance.
  • the palladium catalyst can be used in the dry or moist (residual moisture in water) state for the process according to the invention.
  • the proportion of palladium on the carrier material activated carbon or aluminum oxide can be 1 to 50% by weight, preferably 5 to
  • the weight ratio of the catalyst used to benzylidene acetone is preferably 0.00001 to 0.01, in particular preferably 0.0001 to 0.001 to 1.
  • the reaction temperature for the process according to the invention is preferably 20 to 100 ° C, particularly preferably 50-80 ° C.
  • the hydrogen pressure is preferably 1 to 20 bar, particularly preferably 1 to 5 bar.
  • the reaction time is preferably 1 to 20 hours, particularly preferably 6 to 15 hours.
  • the method according to the invention can be carried out as follows:
  • Benzylidene acetone and, for example, palladium on activated carbon 5% by weight are placed in a reaction vessel with a gassing stirrer. Hydrogenation is carried out at a hydrogen pressure of, for example, 1 bar. The crude product is filtered and distilled. It is surprising that the hydrogenation can be carried out in a high yield and selectively in the presence of a palladium catalyst on activated carbon and / or a palladium catalyst on aluminum oxide.
  • Reaction product with the following composition 98.7% benzylacetone, 0.7% phenylbutanol.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Catalysts (AREA)
  • Hydrogenated Pyridines (AREA)

Abstract

Benzyl acetone can be produced by hydrogenating benzylidene acetone in the presence of a palladium catalyst on active carbon and/or a palladium catalyst on aluminium oxide.

Description

Verfahren zur Herstellung von BenzylacetonProcess for the preparation of benzylacetone
Benzylaceton ist ein wertvoller Riech- und Aromastoff, der in der Kakaobohne vor- kommt. Sein Geruch ist dem Jasmin- und Erdbeerduft ähnlich. Benzylaceton findet in Riechstoffkompositionen und Aromen Anwendung (Malasiewicz, Parfümerie und Kosmetik, S. 211, 4/88, K. Bauer, A. Garbe, Common Fragrance and Flavor Materials, S. 73, VCH, Weinheim, 1985).Benzylacetone is a valuable fragrance and aroma substance that is found in cocoa beans. Its smell is similar to that of jasmine and strawberry. Benzylacetone is used in fragrance compositions and flavors (Malasiewicz, Perfumery and Cosmetics, p. 211, 4/88, K. Bauer, A. Garbe, Common Fragrance and Flavor Materials, p. 73, VCH, Weinheim, 1985).
Es ist bekannt, Benzylaceton (l-Phenyl-3-butanon) durch selektive Hydrierung derIt is known to selectively hydrogenate the benzylacetone (l-phenyl-3-butanone)
Doppelbindung des Benzylidenacetons herzustellen. Bei der Hydrierung bleibt die Carbonylgruppe und der aromatische Ring erhalten.To produce double bond of the benzylidene acetone. The hydrogenation retains the carbonyl group and the aromatic ring.
Zur Hydrierung mit Wasserstoff werden beispielsweise Nickelkatalysatoren (Chem. Pharm. Bull.,1990, 38(6), 1720), im besonderen Raney-Nickel (Ber. Dtsch. Chem. Ges. 56, 2174 (1923)) eingesetzt.For hydrogenation with hydrogen, for example, nickel catalysts (Chem. Pharm. Bull., 1990, 38 (6), 1720), in particular Raney nickel (Ber. Dtsch. Chem. Ges. 56, 2174 (1923)) are used.
In PL 153267 wird ein aktivierter Nickelkatalysator auf Aluminiumoxid beschrieben, mit dem aus Benzylidenaceton bei 100-150°C Benzylaceton in 82 % Ausbeute hergestellt werden kann.PL 153267 describes an activated nickel catalyst on aluminum oxide, which can be used to produce benzylacetone in 82% yield from benzylidene acetone at 100-150 ° C.
Für die Herstellung von Benzylaceton sind auch Edelmetall-Katalysatoren, wie Platinmohr bekannt (Ann. Chim. 9, (1), 90, (1914)). Es ist auch bekannt, Benzylaceton mit einem Katalysator aus Palladium auf Aktivkohle in einer Lösung von Essigsäure-Ammoniumformiat mit einer Ausbeute von 78 % herzustellen (Synth. Commun. (1998), 28(22), 4193).Precious metal catalysts, such as platinum black, are also known for the production of benzylacetone (Ann. Chim. 9, (1), 90, (1914)). It is also known to produce benzylacetone with a catalyst made of palladium on activated carbon in a solution of acetic acid-ammonium formate with a yield of 78% (Synth. Commun. (1998), 28 (22), 4193).
Es ist auch bekannt, Benzylaceton mit einem Katalysator aus Palladiumacetat in Di- methylformamid in Gegenwart von Kaliumformiat mit einer Ausbeute von 97 % herzustellen (Synlett. 1991, 1, 27).It is also known to produce benzylacetone with a catalyst from palladium acetate in dimethylformamide in the presence of potassium formate in a yield of 97% (Synlett. 1991, 1, 27).
Es ist auch bekannt, Benzylaceton mit einem Katalysator aus Palladium auf Silicium- dioxid/Aluminiumphosphat in methanolischer Lösung mit einer Selektivität vonIt is also known to use benzylacetone with a catalyst made from palladium on silicon dioxide / aluminum phosphate in methanolic solution with a selectivity of
100 % herzustellen (React. Kinet. Catal. Lett, 25, 45-50 (1984)).100% (React. Kinet. Catal. Lett, 25, 45-50 (1984)).
Es ist auch bekannt, Benzylaceton mit einer Katalysatorkombination aus Palladium oder Platin mit den Seltenen Erden, wie Lanthan, Praseodym , herzustellen (DE-A 2 615 308).It is also known to produce benzylacetone with a catalyst combination of palladium or platinum with the rare earths, such as lanthanum, praseodymium (DE-A 2 615 308).
Die bekannten Verfahren zur Herstellung von Benzylaceton aus Benzalaceton zeigen bei der großtechnischen Produktion Nachteile durch die Toxizität des Katalysators, durch UnWirtschaftlichkeit aufgrund der Verdünnung mit Lösemittel, durch zu geringe Ausbeuten oder durch Katalysatoren, die aufwendig hergestellt werden müssen.The known processes for the production of benzylacetone from benzalacetone have disadvantages in large-scale production due to the toxicity of the catalyst, due to inefficiency due to the dilution with solvent, due to insufficient yields or due to catalysts which have to be prepared in a complex manner.
Es besteht weiterhin der Bedarf ein Verfahren zu finden, das ökologisch unbedenklich und wirtschaftlich Benzylaceton liefert.There is still a need to find a process which provides benzylacetone in an ecologically safe and economical manner.
Es wurde ein Verfahren zur Herstellung von Benzylaceton durch Hydrierung von Benzylidenaceton gefunden, das dadurch gekennzeichnet ist, dass die Hydrierung in Gegenwart eines Palladium-Katalysators auf Aktivkohle und/oder eines Palladium- Katalysators auf Aluminiumoxid durchgeführt wird.A process for the preparation of benzylacetone by hydrogenation of benzylidene acetone has been found, which is characterized in that the hydrogenation is carried out in the presence of a palladium catalyst on activated carbon and / or a palladium catalyst on aluminum oxide.
Das erfindungsgemäße Verfahren wird bevorzugt ohne Lösungsmittel durchgeführt. Mit Hilfe des erfindungsgemäßen Verfahrens kann Benzylaceton in hohen Ausbeuten wirtschaftlich hergestellt werden. Die Handhabung von Palladium als Katalysator ist besonders vorteilhaft, da der Katalysator kein Gefahrstoff darstellt.The process according to the invention is preferably carried out without a solvent. With the aid of the process according to the invention, benzylacetone can be produced economically in high yields. The handling of palladium as a catalyst is particularly advantageous since the catalyst is not a hazardous substance.
Für das erfindungsgemäße Verfahren kann der Palladium-Katalysator im trockenen oder feuchten (Restfeuchte an Wasser) Zustand verwendet werden.The palladium catalyst can be used in the dry or moist (residual moisture in water) state for the process according to the invention.
Für das erfindungsgemäße Verfahren kann der Anteil Palladium auf dem Träger- material Aktivkohle und oder Aluminiumoxid 1 bis 50 Gew.%, bevorzugt 5 bisFor the process according to the invention, the proportion of palladium on the carrier material activated carbon or aluminum oxide can be 1 to 50% by weight, preferably 5 to
10 %, bezogen auf den trockenen Katalysator betragen.10%, based on the dry catalyst.
Für das erfindungsgemäße Verfahren beträgt das Gewichtsverhältnis des eingesetzten Katalysators zu Benzylidenaceton bevorzugt 0,00001 bis 0,01, insbesondere bevor- zugt 0,0001 bis 0,001 zu 1.For the process according to the invention, the weight ratio of the catalyst used to benzylidene acetone is preferably 0.00001 to 0.01, in particular preferably 0.0001 to 0.001 to 1.
Die Reaktionstemperatur für das erfindungsgemäße Verfahren liegt bevorzugt bei 20 bis 100°C, insbesondere bevorzugt bei 50-80°C.The reaction temperature for the process according to the invention is preferably 20 to 100 ° C, particularly preferably 50-80 ° C.
Der Wasserstoffdruck liegt bevorzugt bei 1 bis 20 bar, insbesondere bevorzugt bei 1 bis 5 bar.The hydrogen pressure is preferably 1 to 20 bar, particularly preferably 1 to 5 bar.
Die Reaktionszeit beträgt bevorzugt 1 bis 20 Stunden, insbesondere bevorzugt 6 bis 15 Stunden.The reaction time is preferably 1 to 20 hours, particularly preferably 6 to 15 hours.
Das erfindungsgemäße Verfahren kann wie folgt durchgeführt werden:The method according to the invention can be carried out as follows:
In einem Reaktionsgefäß mit Begasungsrührer wird Benzylidenaceton und z.B. Palladium auf Aktivkohle 5 Gew.% vorgelegt. Bei einem Wasserstoffdruck von z.B. 1 bar wird hydriert. Das Rohprodukt wird filtriert und destilliert. Es ist überraschend, dass die Hydrierung in Gegenwart eines Palladium-Katalysators auf Aktivkohle und/oder eines Palladium-Katalysators auf Aluminiumoxid in hoher Ausbeute und selektiv durchgeführt werden kann. Benzylidene acetone and, for example, palladium on activated carbon 5% by weight are placed in a reaction vessel with a gassing stirrer. Hydrogenation is carried out at a hydrogen pressure of, for example, 1 bar. The crude product is filtered and distilled. It is surprising that the hydrogenation can be carried out in a high yield and selectively in the presence of a palladium catalyst on activated carbon and / or a palladium catalyst on aluminum oxide.
BeispieleExamples
Beispiel 1example 1
In einem 5 1 Rührautoklaven mit Begasungsrührer wurden 1493 g Benzylidenaceton1493 g of benzylidene acetone were placed in a 5 1 stirred autoclave with a gassing stirrer
(GC-Reinheit 99,3 %) und 1,3 g Palladium auf Aktivkohle 5 % mit 40 % Wassergehalt vorgelegt. Es wurde 17 Stunden bei 55°C hydriert. Der Wasserstoffdruck betrug 2 bar. Nach Filtration des Rohproduktes ergab die gaschromatographische Analyse des Reaktionsprodukts folgende Zusammensetzung: 98,2 % Benzylaceton, 1,1 %» Phenylbutanol.(GC purity 99.3%) and 1.3 g palladium on activated carbon 5% with 40% water content. The mixture was hydrogenated at 55 ° C. for 17 hours. The hydrogen pressure was 2 bar. After filtration of the crude product, gas chromatographic analysis of the reaction product showed the following composition: 98.2% benzylacetone, 1.1% phenylbutanol.
Die Destillation des Rohproduktes bei 82 bis 85°C und 2 mbar Vakuum verlief ohne Rückstand.The distillation of the crude product at 82 to 85 ° C and 2 mbar vacuum was without residue.
Beispiel 2Example 2
In einem 5 1 Rührautoklaven mit Begasungsrührer wurden 1500 g Benzylidenaceton (GC-Reinheit 99,3 %) und 0,8 g Palladium auf Aluminiumoxid 5 % trocken vorgelegt. Es wurde 6 Stunden bei 75°C hydriert. Der Wasserstoffdruck betrug 5 bar. Nach Filtration des Rohproduktes ergab die gaschromatographische Analyse des1500 g of benzylidene acetone (GC purity 99.3%) and 0.8 g of palladium on aluminum oxide 5% were placed dry in a 5 1 stirred autoclave with a gassing stirrer. The mixture was hydrogenated at 75 ° C. for 6 hours. The hydrogen pressure was 5 bar. After filtration of the crude product, gas chromatographic analysis showed the
Reaktionsprodukts folgende Zusammensetzung: 98,7 % Benzylaceton, 0,7 % Phenylbutanol.Reaction product with the following composition: 98.7% benzylacetone, 0.7% phenylbutanol.
Die Destillation des Rohproduktes bei 82 bis 85°C und 2 mbar Vakuum verlief ohne Rückstand. The distillation of the crude product at 82 to 85 ° C and 2 mbar vacuum was without residue.

Claims

Patentansprtiche Patentansprtiche
1. Verfahren zur Herstellung von Benzylaceton durch Hydrierung von Benzylidenaceton, dadurch gekennzeichnet, dass die Hydrierung in Gegenwart eines Palladium-Katalysators auf Aktivkohle und/oder eines Palladium- Katalysators auf Aluminiumoxid durchgeführt wird.1. A process for the preparation of benzylacetone by hydrogenation of benzylidene acetone, characterized in that the hydrogenation is carried out in the presence of a palladium catalyst on activated carbon and / or a palladium catalyst on aluminum oxide.
2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass für die Hydrierung der Palladiumkatalysator im trockenen oder feuchten Zustand eingesetzt wird.2. The method according to claim 1, characterized in that the palladium catalyst is used in the dry or moist state for the hydrogenation.
3. Verfahren nach den Ansprüchen 1 und 2, dadurch gekennzeichnet, dass der Anteil Palladium auf dem Trägermaterial Aktivkohle und/oder Aluminiumoxid 1 bis 50 Gew.% bezogen auf trockenen Katalysator beträgt.3. Process according to claims 1 and 2, characterized in that the proportion of palladium on the carrier material activated carbon and / or aluminum oxide is 1 to 50% by weight, based on the dry catalyst.
4. Verfahren nach den Ansprüchen 1 bis 3, dadurch gekennzeichnet, dass die4. The method according to claims 1 to 3, characterized in that the
Umsetzung ohne Lösemittel durchgeführt wird.Implementation is carried out without solvents.
5. Verfahren nach den Ansprüchen 1 bis 4, dadurch gekennzeichnet, dass das Gewichtsverhältnis des eingesetzten Katalysators zu Benzylidenaceton 0,00001 bis 0,01 zu 1 beträgt.5. The method according to claims 1 to 4, characterized in that the weight ratio of the catalyst used to benzylidene acetone is 0.00001 to 0.01 to 1.
6. Verfahren nach den Ansprüchen 1 bis 5, dadurch gekennzeichnet, dass die Reaktionstemperatur bei 20 bis 100°C liegt.6. The method according to claims 1 to 5, characterized in that the reaction temperature is 20 to 100 ° C.
7. Verfahren nach den Ansprüchen 1 bis 6, dadurch gekennzeichnet, dass der7. The method according to claims 1 to 6, characterized in that the
Wasserstoffdruck bei 1 bis 20 bar liegt. Hydrogen pressure is 1 to 20 bar.
EP01980276A 2000-09-08 2001-08-27 Method for producing benzyl acetone Withdrawn EP1322586A2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10044400A DE10044400A1 (en) 2000-09-08 2000-09-08 Process for the preparation of benzylacetone
DE10044400 2000-09-08
PCT/EP2001/009838 WO2002020450A2 (en) 2000-09-08 2001-08-27 Method for producing benzyl acetone

Publications (1)

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EP1322586A2 true EP1322586A2 (en) 2003-07-02

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EP01980276A Withdrawn EP1322586A2 (en) 2000-09-08 2001-08-27 Method for producing benzyl acetone

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US (1) US6441242B1 (en)
EP (1) EP1322586A2 (en)
AU (1) AU2002212161A1 (en)
DE (1) DE10044400A1 (en)
MX (1) MXPA03001923A (en)
WO (1) WO2002020450A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012013697A2 (en) * 2010-07-28 2012-02-02 Lanxess Deutschland Gmbh Hydrogenation of diene-based polymers

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3860657A (en) 1970-03-25 1975-01-14 Givaudan Corp Process for the preparation of citronellal
IT1085879B (en) 1976-04-08 1985-05-28 Basf Ag PROCESS FOR THE PREPARATION OF SUPERIOR KETONES
DE3006867C2 (en) * 1980-02-23 1981-11-12 Basf Ag, 6700 Ludwigshafen Process for the production of higher saturated ketones
DE3151086A1 (en) * 1981-06-02 1982-12-16 Chemische Werke Hüls AG, 4370 Marl Process for the continuous preparation of n-butyraldehyde by selective hydrogenation of crotonaldehyde in liquid phase in the presence of a palladium alumina catalyst
US4450300A (en) 1981-12-23 1984-05-22 Chemische Werke Huels Aktiengesellschaft Process for the continuous manufacture of n-butyraldehyde by selective hydrogenation of crotonaldehyde in the liquid phase in the presence of a palladium-aluminum oxide catalyst
PL153267B1 (en) * 1987-12-04 1991-03-29 Inst Chemii Przemyslowej Continuous process for obtaining benzyl dimethylketone for use in production of parfumes
DE19814879A1 (en) 1998-04-02 1999-10-07 Basf Ag Process for the selective liquid phase hydrogenation of alpha, beta-unsaturated carbonyl compounds

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0220450A2 *

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AU2002212161A1 (en) 2002-03-22
US6441242B1 (en) 2002-08-27
MXPA03001923A (en) 2004-09-10
WO2002020450A3 (en) 2002-05-23
WO2002020450A2 (en) 2002-03-14
DE10044400A1 (en) 2002-04-04
US20020055656A1 (en) 2002-05-09

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