WO2012090976A1 - 新規脂環式アルコール - Google Patents
新規脂環式アルコール Download PDFInfo
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- WO2012090976A1 WO2012090976A1 PCT/JP2011/080148 JP2011080148W WO2012090976A1 WO 2012090976 A1 WO2012090976 A1 WO 2012090976A1 JP 2011080148 W JP2011080148 W JP 2011080148W WO 2012090976 A1 WO2012090976 A1 WO 2012090976A1
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- catalyst
- compound
- alicyclic alcohol
- reaction
- isopropyl
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- ZDQNHUAIFDGPCF-UHFFFAOYSA-N CC(C)C1(CCC(C)CC1)C(F)=O Chemical compound CC(C)C1(CCC(C)CC1)C(F)=O ZDQNHUAIFDGPCF-UHFFFAOYSA-N 0.000 description 2
- YAJBNRMWRDRIOV-UHFFFAOYSA-N CC(C)C1(CO)CCC(C)CC1 Chemical compound CC(C)C1(CO)CCC(C)CC1 YAJBNRMWRDRIOV-UHFFFAOYSA-N 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C35/00—Compounds having at least one hydroxy or O-metal group bound to a carbon atom of a ring other than a six-membered aromatic ring
- C07C35/02—Compounds having at least one hydroxy or O-metal group bound to a carbon atom of a ring other than a six-membered aromatic ring monocyclic
- C07C35/08—Compounds having at least one hydroxy or O-metal group bound to a carbon atom of a ring other than a six-membered aromatic ring monocyclic containing a six-membered rings
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C33/00—Unsaturated compounds having hydroxy or O-metal groups bound to acyclic carbon atoms
- C07C33/05—Alcohols containing rings other than six-membered aromatic rings
- C07C33/14—Alcohols containing rings other than six-membered aromatic rings containing six-membered rings
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07B—GENERAL METHODS OF ORGANIC CHEMISTRY; APPARATUS THEREFOR
- C07B61/00—Other general methods
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- 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
- C07C29/132—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of an oxygen containing functional group
- C07C29/136—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of an oxygen containing functional group of >C=O containing groups, e.g. —COOH
- C07C29/147—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of an oxygen containing functional group of >C=O containing groups, e.g. —COOH of carboxylic acids or derivatives thereof
- C07C29/149—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of an oxygen containing functional group of >C=O containing groups, e.g. —COOH of carboxylic acids or derivatives thereof with hydrogen or hydrogen-containing gases
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C31/00—Saturated compounds having hydroxy or O-metal groups bound to acyclic carbon atoms
- C07C31/13—Monohydroxylic alcohols containing saturated rings
- C07C31/133—Monohydroxylic alcohols containing saturated rings monocyclic
- C07C31/135—Monohydroxylic alcohols containing saturated rings monocyclic with a five or six-membered rings; Naphthenic alcohols
- C07C31/1355—Monohydroxylic alcohols containing saturated rings monocyclic with a five or six-membered rings; Naphthenic alcohols with a six-membered ring
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/58—Preparation of carboxylic acid halides
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C67/00—Preparation of carboxylic acid esters
- C07C67/14—Preparation of carboxylic acid esters from carboxylic acid halides
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- 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
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- 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
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- 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 an alicyclic alcohol useful as a blended fragrance raw material, a production method thereof, and a fragrance composition containing the alicyclic alcohol compound.
- Non-Patent Document 1 describes that Mayol, which has a green and Mugue-like fragrance, Mugetanol, which has a light floral-like fragrance like Mugue, and Patchone, which has a woody-like fragrance, is useful as a blended fragrance material. ing.
- An object of the present invention is to provide a novel alicyclic alcohol compound having a floral-green-like fragrance, a production method thereof, and a fragrance composition containing the alicyclic alcohol compound, which is useful as a blended fragrance material. is there.
- the inventors of the present invention synthesized various compounds and studied their aromas.
- the novel alicyclic alcohol compound represented by the chemical formula (1) which is a novel compound, is excellent in fresh and fresh floral- It was found to have a green-like fragrance.
- this invention relates to the novel alicyclic alcohol, its manufacturing method, and the fragrance
- the novel alicyclic alcohol compound of the present invention is novel in that it has an excellent floral-green-like fragrance that is refreshing and fresh, and has excellent fragrance persistence. Therefore, toiletries, soaps, and laundry detergents It is useful as a flavoring ingredient for a wide range of products such as Moreover, according to the manufacturing method of the alicyclic alcohol compound of this invention, it becomes possible to manufacture this alicyclic alcohol compound by an industrially advantageous method.
- the novel alicyclic alcohol of the present invention is represented by the chemical formula (1).
- cis and trans isomers may exist depending on the form of substitution at the 1,4-position of the cyclohexane ring, but the structure of the novel alicyclic alcohol used in the present invention. As such, either a cis isomer or a trans isomer may be used alone or as a mixture.
- the novel alicyclic alcohol represented by the above chemical formula (1) has an excellent floral and green-like fragrance that is refreshing and fresh. Soap, shampoo, rinse, alone or in combination with other ingredients , Detergents, cosmetics, spray products, fragrances, perfumes, bathing agents and other flavoring ingredients.
- the fragrance composition of the present invention is obtained by blending a novel alicyclic alcohol represented by the chemical formula (1) with other commonly used fragrance ingredients or a blended fragrance having a desired composition.
- the blending amount varies depending on the kind of the blended fragrance, the type of the target fragrance, the intensity of the fragrance, and the like, but it is preferable to add 0.01 to 90% by weight, and 0.1 to 50% by weight in the blended fragrance. More preferably, it is added.
- the fragrance component that can be used in combination with the novel alicyclic alcohol of the present invention include hydrocarbons, alcohols, phenols, esters, carbonates, aldehydes, ketones, acetals, ethers, and nitriles. And natural essential oils such as carboxylic acids and lactones, natural extracts, and synthetic fragrances.
- the novel alicyclic alcohol compound production method of the present invention comprises: (A) A step of reacting the monoene compound represented by the chemical formula (2) with carbon monoxide in the presence of hydrogen fluoride (hereinafter also referred to as HF) to obtain an acid fluoride (chemical formula (3)) (hereinafter referred to as “carbonylation”).
- HF hydrogen fluoride
- carbonylation an acid fluoride
- the monoene compound represented by the general formula (2) can also be synthesized, for example, by partially hydrogenating the corresponding diene compound with a hydrogenation catalyst.
- the synthesized monoene compound is used after purification by removal of the catalyst by filtration or the like, distillation or the like.
- the diene compound used in the synthesis of the monoene compound (hereinafter sometimes abbreviated as “diene compound”) is a hydrocarbon having a six-membered ring skeleton, and each of them is only at the 1st and 4th positions of the six-membered ring skeleton.
- a compound having a hydrocarbon group of methyl and isopropyl and having two double bonds in the molecule is preferably used.
- alicyclic hydrocarbons terpene hydrocarbons and the like, preferably limonene, ⁇ -terpinene, ⁇ -terpinene, ⁇ -terpinene, isolimonene, ⁇ -ferrandolene, ⁇ -ferrandolene, Menogen, terpinolene and dipentene are exemplified, more preferably limonene, ⁇ -terpinene, ⁇ -terpinene, ⁇ -ferrandrene, terpinolene and dipentene, and still more preferably terpinolene.
- the hydrogenation catalyst for the diene compound is not particularly limited as long as it is a normal catalyst used for hydrogenation of unsaturated bonds, but a catalyst containing at least one selected from metals of Groups 8 to 11 of the periodic table is preferable.
- the hydrogenation catalyst may be a solid catalyst or a homogeneous catalyst, but a solid catalyst is preferred from the viewpoint of separability from the reactant.
- Examples of the solid catalyst include a non-supported metal catalyst and a supported metal catalyst.
- Examples of the non-supported metal catalyst include (1) Raney catalysts such as Raney nickel, Raney cobalt, and Raney copper. (2) Platinum, palladium, rhodium, Oxides such as ruthenium and colloidal catalysts are preferred.
- Supported metal catalysts include magnesia, zirconia, ceria, diatomaceous earth, activated carbon, alumina, silica, zeolite, titania and other supports such as iron, cobalt, nickel, copper, ruthenium, rhodium, palladium, silver, osmium, iridium, platinum, Examples include those in which at least one kind of gold is supported or mixed, such as copper-chromium catalyst (Adkins catalyst), copper-zinc catalyst, supported copper catalyst in which a copper catalyst such as copper-iron is supported on a carrier, Pt / C, Supported platinum catalyst such as Pt / alumina, supported palladium catalyst such as Pd / C and Pd / alumina, supported ruthenium catalyst such as Ru / C and Ru / alumina, or supported rhodium catalyst such as Rh / C and Rh / alumina, etc.
- copper-chromium catalyst Adkins catalyst
- copper-zinc catalyst supported
- the reaction activity is obtained by performing activation for 1 to 3 hours at 140 to 200 ° C. under a hydrogen pressure of 1 to 3 MPa using a solvent such as heptane before the reaction of the diene compound. , And selectivity can be improved.
- the amount of hydrogenation catalyst used varies depending on the type of catalyst, but is 0.001 to 100% by mass, preferably 0.01 to 30% by mass, more preferably 0.1 to 20% by mass, based on the diene compound as a raw material. % Is appropriate.
- the pressure of hydrogen can be carried out at normal pressure or under pressure, and usually 0.1 to 4.0 MPa, preferably 0.1 to 3.0 MPa, more preferably 0.1 to 3.0 MPa.
- the range is 2.0 MPa.
- the hydrogenation reaction can be carried out without a solvent, but a solvent may be used.
- a solvent organic acids such as water, formic acid and acetic acid, aromatic compounds such as benzene, o-dichlorobenzene, toluene and xylene, hexane Hydrocarbons such as heptane and cyclohexane, alcohols such as methanol, ethanol, isopropyl alcohol, t-butyl alcohol, ethylene glycol and diethylene glycol, ethers such as dioxane, tetrahydrofuran, dimethoxyethane and diglyme, and mixtures thereof. .
- the amount of the solvent used in the hydrogenation reaction can usually be in the range of 0.1 to 30 times by mass, preferably 0.2 to 20 times by mass with respect to the diene compound as a raw material. .
- the reaction temperature of the hydrogenation reaction can usually be carried out at -90 ° C to 200 ° C, preferably 20 ° C to 150 ° C, more preferably 20 ° C to 100 ° C.
- the form of the hydrogenation reaction is not particularly limited as long as the catalytic hydrogenation reaction is possible, and may be a commonly used known one.
- a suspension bed reactor in which a catalyst is fluidized with a fluid to perform a catalytic hydrogenation reaction a fixed bed reactor in which a catalytic hydrogenation reaction is performed by filling and fixing the catalyst and supplying a fluid can be used.
- Carbon monoxide used in the carbonylation step of the present invention may contain an inert gas such as nitrogen or methane, but the carbon monoxide partial pressure is in the range of 0.5 to 5 MPa, preferably in the range of 1 to 3 MPa.
- the carbon monoxide partial pressure is preferably 5 MPa or less from the viewpoint of equipment load.
- HF used in the carbonylation step is a solvent for the reaction, a catalyst, and a secondary material
- the amount of HF to be used is 4 to 15 mol times, preferably 6 to 10 mol times relative to the raw material monoene compound. If the molar ratio of HF is 4 mol times or more, the carbonylation reaction proceeds efficiently, side reactions such as disproportionation and polymerization can be suppressed, and the target alicyclic carbonyl compound is obtained in high yield. Can do. Further, from the viewpoint of raw material cost and productivity, it is preferable to use 15 mol times or less of HF.
- the type of the carbonylation reaction is not particularly limited, and any method such as a batch system, a semi-continuous system, or a continuous system may be used.
- the reaction temperature of the carbonylation reaction is ⁇ 50 ° C. to 30 ° C., preferably ⁇ 40 ° C. to 0 ° C., particularly preferably ⁇ 30 ° C. to ⁇ 25 ° C. Selectivity is good when the reaction temperature of the carbonylation reaction is 30 ° C. or lower, particularly ⁇ 25 ° C. or lower. Further, it is preferably carried out at ⁇ 50 ° C. or higher from the viewpoint of reaction rate.
- ⁇ (B) Esterification step> The acid fluoride reaction solution produced by the carbonylation reaction is reacted with an alcohol having 1 to 4 carbon atoms to form an alicyclic ester compound.
- a method of adding a predetermined amount of alcohol to the acid fluoride reaction liquid is preferable from the viewpoint of the corrosiveness of the reaction apparatus.
- generated by carbonylation reaction is refine
- R is an alkyl group having 1 to 4 carbon atoms.
- Specific alcohols used in the esterification step include methanol, ethanol, n-propanol, i-propanol, n-butyl alcohol, i-butyl alcohol, and t-butyl alcohol. Of these, methanol or ethanol is preferred from the viewpoint of reactivity.
- the amount of alcohol used is 0.5 to 2.0 moles, preferably 0.8 to 1.5 moles, relative to the raw material monoene compound in the carbonylation step. If the molar ratio of alcohol is 0.5 mol times or more, it is preferable because the remaining amount of unreacted fluoride is small and the apparatus corrosion in the subsequent process is small, and the viewpoint of the apparatus corrosion suppression by suppressing the dehydration reaction between alcohol molecules To 2.0 mol times or less.
- the reaction temperature between the acid fluoride and the alcohol is ⁇ 40 ° C. or higher and 20 ° C. or lower from the viewpoint of inhibiting the decomposition of the cyclohexanecarbonyl compound represented by the general formula (4).
- it is lower than ⁇ 40 ° C., the esterification rate is slow and the yield decreases.
- the temperature is higher than 20 ° C., the risk of by-producting water in the system increases due to decomposition of the ester and dehydration of the added alcohol.
- HF is distilled off from the obtained cyclohexanecarbonyl compound represented by the general formula (4), and then purified by a conventional method such as distillation.
- the reduction of the cyclohexanecarbonyl compound represented by the general formula (4) obtained in the esterification step can be any method as long as it is usually used when the carbonyl compound is reduced to an alcohol, and is not particularly limited.
- any of hydride reduction, reduction with metals and metal salts, and catalytic hydrogenation described in the 5th edition, Experimental Chemistry Course Vol. 14 (Maruzen Co., Ltd.), pages 11 to 27 can be used. Reduction by crystallization is preferred.
- the catalyst used for the catalytic hydrogenation of a cyclohexanecarbonyl compound is not particularly limited as long as it is a normal catalyst used for the hydrogenation of a carbonyl compound, but a catalyst containing at least one selected from metals in groups 8 to 11 of the periodic table Is preferred.
- catalytic hydrogenation catalyst containing at least one selected from iron, cobalt, nickel, copper, ruthenium, rhodium, palladium, silver, osmium, iridium, platinum and gold.
- the catalytic hydrogenation catalyst may be a solid catalyst or a homogeneous catalyst, but is preferably a solid catalyst from the viewpoint of separability from the reactants.
- the solid catalyst include a non-supported metal catalyst and a supported metal catalyst.
- Raney catalysts such as Raney nickel, Raney cobalt, Raney copper and the like
- Oxides and colloidal catalysts such as platinum, palladium, rhodium and ruthenium are preferable.
- Supported metal catalysts include magnesia, zirconia, ceria, diatomaceous earth, activated carbon, alumina, silica, zeolite, or titania on iron, cobalt, nickel, copper, ruthenium, rhodium, palladium, silver, osmium, iridium, platinum Examples include those in which at least one kind of gold is supported or mixed, such as a copper-chromium catalyst (Adkins catalyst), a copper-zinc catalyst or a supported copper catalyst such as copper-iron, and a supported Pt / C or Pt / alumina.
- a platinum catalyst a supported palladium catalyst such as Pd / C or Pd / alumina, a supported ruthenium catalyst such as Ru / C or Ru / alumina, or a supported rhodium catalyst such as Rh / C or Rh / alumina is preferred.
- a catalyst containing at least one selected from nickel and copper is more preferable in terms of reaction activity.
- the amount of the catalytic hydrogenation catalyst used varies depending on the type of catalyst, but it is 1 to 100% by mass, preferably 3 to 30% by mass, based on the cyclohexanecarbonyl compound as a raw material.
- the reduction step of the carbonyl group of the present invention can be performed without a solvent, but a solvent may be used.
- organic acids such as water, formic acid and acetic acid, aromatic compounds such as benzene, o-dichlorobenzene, toluene and xylene, hydrocarbons such as hexane, heptane and cyclohexane, methanol And alcohols such as ethanol, isopropyl alcohol, t-butyl alcohol, ethylene glycol and diethylene glycol, ethers such as dioxane, tetrahydrofuran, dimethoxyethane and diglyme, and mixtures thereof.
- organic acids such as water, formic acid and acetic acid
- aromatic compounds such as benzene, o-dichlorobenzene, toluene and xylene
- hydrocarbons such as hexane, heptane and cyclohexane
- methanol And alcohols such as ethanol, isopropyl alcohol, t-butyl alcohol, ethylene glycol and diethylene glyco
- solvent-free, aromatic compounds such as benzene, o-dichlorobenzene, toluene, xylene, hydrocarbons such as hexane, heptane, cyclohexane, methanol, ethanol, isopropyl alcohol, t-butyl alcohol, ethylene glycol
- alcohols such as diethylene glycol
- ethers such as dioxane, tetrahydrofuran, dimethoxyethane, diglyme, or a mixture thereof.
- the amount of the solvent used in the reduction step of the carbonyl group of the present invention is usually in the range of 0 to 30 times the mass of the cyclohexanecarbonyl compound represented by the general formula (4) obtained in the esterification step. However, it is preferably 0 to 20 times by mass.
- the hydrogen pressure in the carbonyl group reduction step of the present invention is preferably as high as possible from the viewpoint of moving the reaction equilibrium to the alcohol side, but is preferably 1 to 30 MPa, more preferably 2 to 20 MPa in consideration of equipment costs. 5 to 10 MPa is more preferable.
- the reaction temperature in the carbonyl group reduction step of the present invention is preferably 100 ° C. or higher, more preferably 150 ° C. or higher, from the viewpoint of obtaining a sufficient reaction rate. Further, from the viewpoint of suppressing the transesterification reaction between the produced alicyclic alcohol and the cyclohexanecarbonyl compound represented by the general formula (4), it is preferably 300 ° C or lower, more preferably 280 ° C or lower, and further preferably 250 ° C or lower. .
- the form of the carbonyl group reduction step of the present invention is not particularly limited. Even when the catalytic hydrogenation is performed, the catalytic hydrogenation reaction is not particularly limited as long as the catalytic hydrogenation reaction is possible.
- a suspension bed reactor in which a catalyst is fluidized with a fluid to perform a catalytic hydrogenation reaction a fixed bed reactor in which a catalytic hydrogenation reaction is performed by filling and fixing the catalyst and supplying a fluid can be used.
- ⁇ C1-C4 alcohol is by-produced during the reaction.
- the reaction can be carried out in the presence of them, but can also be carried out while removing them continuously or intermittently during the reaction.
- a novel alicyclic alcohol compound represented by chemical formula (1) having a high purity is obtained by separating the hydrogenation catalyst from the alicyclic alcohol product thus obtained and then purifying it according to a conventional method such as distillation. Can be obtained.
- ⁇ Gas chromatography analysis conditions When analyzing monoene compounds and alicyclic alcohols, gas chromatography uses “GC-17A” (trade name; manufactured by Shimadzu Corporation) and “HR-1” (trade name; Shinwa Chemical Co., Ltd.) as a capillary column. ); 0.32 mm ⁇ ⁇ 25 m) was used. The temperature raising condition was from 100 ° C. to 250 ° C. at 2 ° C./min. The temperature was raised.
- gas chromatography uses “GC-17A” (trade name; manufactured by Shimadzu Corporation) and “DBWAX” (trade name; manufactured by J &W; 0.32 mm ⁇ ⁇ 30 m ⁇ 0) as a capillary column. .25 ⁇ m) was used.
- the temperature raising condition is 5 ° C./min. The temperature was raised.
- a Cu-Cr catalyst (JGC Catalysts & Chemicals Co., Ltd.) was placed in a 5 L stainless steel autoclave equipped with a Nack drive stirrer, three inlet nozzles at the top and one extraction nozzle at the bottom, and the internal temperature could be controlled by a jacket. ), Trade name “N-203S”) 50.0 g, heptane (manufactured by Wako Pure Chemical Industries, Ltd .; special grade) 500.0 g, charged at 170 ° C. under a hydrogen pressure of 2 MPa for 1 hour. It was.
- terpinolene manufactured by Wako Pure Chemical Industries, Ltd .; special grade
- a hydrogenation reaction was performed by stirring at 110 ° C. and a hydrogen pressure of 2 MPa for 8 hours.
- the reaction solution was filtered to remove the catalyst, and a reaction solution containing 12.5-isopropyl-4-methylcyclohexene concentration of 22.5%, 4-isopropyl-1-methylcyclohexane concentration of 10.2% and heptane concentration of 46.5% was obtained.
- 0 g was obtained (yield 44.2%, based on terpinolene).
- ⁇ Carbonylation step> The experiment was conducted using a stainless steel autoclave having an internal volume of 500 ml, equipped with a Nack drive type stirrer, three inlet nozzles at the top, and one extraction nozzle at the bottom and whose internal temperature can be controlled by a jacket. First, the inside of the autoclave was replaced with carbon monoxide, 90 g (4.5 mol) of anhydrous hydrogen fluoride was introduced, the liquid temperature was ⁇ 30 ° C., and the pressure was increased to 2 MPa with carbon monoxide. While maintaining the reaction temperature at ⁇ 30 ° C.
- the heptane solution of the reaction solution prepared in Preparation Example 1 (1-isopropyl-4-methylcyclohexene concentration 32.0%, 4-isopropyl-1 -Methylcyclohexane concentration 16.1%, heptane concentration 51.9%) 277.5 g (containing 1-isopropyl-4-methylcyclohexene: 0.64 mol) was supplied from the top of the autoclave to carry out the carbonylation reaction. After completion of the feeding, stirring was continued for about 10 minutes until absorption of carbon monoxide was not observed.
- Copper-zinc catalyst manufactured by JGC Catalysts & Chemicals supported on 2.5 g of alumina in a stainless steel autoclave, 50.0 g of the ester mixture obtained from the main fraction (methyl 1-isopropyl-4-methylcyclohexanecarboxylate) Isomer ratio is 74.0%, and other isomers include 26.0%), and a reduction reaction is performed by stirring at 260 ° C. for 20 hours under a hydrogen pressure of 10 MPa while flowing hydrogen without solvent. It was.
- reaction solution was filtered to remove the catalyst, and 34 g of a product (mixture) containing 73.5% (1-isopropyl-4-methylcyclohexyl) methanol and 26.5% other isomers was produced ((1-isopropyl -4-methylcyclohexyl) methanol yield 79.2 mol%, based on methyl 1-isopropyl-4-methylcyclohexanecarboxylate).
- the main product was isolated by rectification using a rectification column having 50 theoretical plates, and the obtained fraction had a purity of 92. It was 0% and had an excellent floral-green-like fragrance that was refreshing and fresh.
- the molecular weight of the target product was 170.
- the chemical shift value ( ⁇ ppm, TMS standard) of 1H-NMR in deuterated chloroform solvent is 3.65 (br, 1H), 3.45 (s, 2H), 1.81 (m, 1H), 1.61 (m, 1H), 1.56 (m, 2H), 1.52 (m, 2H), 1.31 (m, 2H), 1.27 (m, 2H), 0.96 (d , 3H) and 0.83 (d, 6H), it was identified as (1-isopropyl-4-methylcyclohexyl) methanol of formula (1).
- Example 2 Fruit type fragrance composition Recalling pineapple by adding 5 parts by mass of the compound of chemical formula (1) obtained in Example 1 to 95 parts by mass of fragrance composition having the composition shown in Table 1. A fruit-type fragrance composition characterized by a refreshing sweetness was obtained.
- the novel alicyclic alcohol of the present invention is novel in that it has an excellent floral-green-like fragrance that is refreshing and fresh, and has excellent fragrance persistence, so that toiletries, soaps, laundry detergents, etc. It is useful as a flavoring ingredient for a wide range of products. Moreover, according to the manufacturing method of alicyclic alcohol of this invention, it becomes possible to manufacture this alicyclic alcohol by an industrially advantageous method.
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Abstract
Description
[1]化学式(1)で表される脂環式アルコール化合物。
[2]化学式(1)で表わされる脂環式アルコール化合物を含有する香料組成物。
[3]フッ化水素の存在下、化学式(2)で表される1-イソプロピル-4-メチルシクロヘキセンと一酸化炭素を反応させ、次いで得られた化学式(3)で表される4-イソプロピル-1-メチルシクロヘキサンカルボン酸フロライドをアルコールと反応させ、一般式(4)で表されるシクロヘキサンカルボニル化合物を得た後、一般式(4)で表されるシクロヘキサンカルボニル化合物を還元して化学式(1)で表わされる脂環式アルコール化合物を製造する方法。
本発明の新規脂環式アルコールは化学式(1)で表される。ここで、化学式(1)に示される構造には、シクロヘキサン環の1,4位の置換の形態によりシス、トランスの異性体が存在しうるが、本発明に用いられる新規脂環式アルコールの構造としては、シス体、トランス体どちらかを単独で用いても、また、混合物として用いてもよい。
上記化学式(1)で示される新規脂環式アルコールは、爽やかでフレッシュ感のある優れたフローラル、グリーン様の香気を有しており、単独でまたは他の成分と組み合わせて、石鹸、シャンプー、リンス、洗剤、化粧品、スプレー製品、芳香剤、香水、入浴剤等の賦香成分として使用できる。
本発明の香料組成物は、通常用いられる他の香料成分や、所望組成の調合香料に、化学式(1)で表される新規脂環式アルコールを配合して得られるものである。その配合量は、調合香料の種類、目的とする香気の種類及び香気の強さ等により異なるが、調合香料中に0.01~90質量%を加えることが好ましく、0.1~50質量%加えることがより好ましい。
本発明の新規脂環式アルコールと組み合わせて用いることができる香料成分としては、炭化水素類、アルコール類、フェノール類、エステル類、カーボネート類、アルデヒド類、ケトン類、アセタール類、エーテル類、ニトリル類、カルボン酸類、ラクトン類等の天然精油や天然抽出物、合成香料を挙げることができる。
本発明の新規脂環式アルコール化合物製造法は、
(a)化学式(2)で表されるモノエン化合物をフッ化水素(今後HFともいう)存在下、一酸化炭素と反応させて酸フロライド(化学式(3))を得る工程(以下、「カルボニル化工程」と略すこともある)、
(b)次いでアルコールと反応させ、一般式(4)で表されるシクロヘキサンカルボニル化合物を得る工程、(以下、「エステル化工程」と略すこともある)、及び
(c)得られたシクロヘキサンカルボニル化合物を還元して化学式(1)で表される脂環式アルコールを得る工程(以下、「カルボニル基の還元工程」と略すこともある)を含む。
モノエン化合物のカルボニル化反応は、HFの存在下で一酸化炭素の加圧下に実施する。これにより、式(3)で表される脂環式カルボニル化合物が、種々の副生物(他の異性体を含む)とともに得られる。
一般式(2)で示されるモノエン化合物は、例えば対応するジエン化合物を水素化触媒により部分水素化することで、合成することもできる。
合成されたモノエン化合物は、ろ過等による触媒の除去や蒸留等により精製を行った後使用する。
モノエン化合物の合成に用いられるジエン化合物(以下、「ジエン化合物」と略すこともある)としては、六員環骨格を有する炭化水素であって、該六員環骨格の1、4位のみにそれぞれメチルとイソプロピルの炭化水素基を有し、分子内に2つの二重結合を有する化合物が好ましく用いられる。具体的には、脂環式炭化水素類、テルペン系炭化水素類などが例示され、好ましくはリモネン、α-テルピネン、β-テルピネン、γ-テルピネン、イソリモネン、α-フェランドレン、β-フェランドレン、メノゲン、テルピノーレン、ジペンテンが例示され、より好ましくはリモネン、α-テルピネン、γ-テルピネン、α-フェランドレン、テルピノーレン、ジペンテンが例示され、更に好ましくはテルピノーレンが例示される。
水素化触媒は、固体触媒でも均一系触媒でも良いが、反応物との分離性の観点から固体触媒が好ましい。
また、銅系触媒を用いる場合は、ジエン化合物の反応前にヘプタン等の溶媒を用いて、140~200℃、水素圧1~3MPa下で1~3時間の活性化を行うことにより、反応活性、および選択性を改善することができる。
本発明のカルボニル化工程に使用する一酸化炭素は、窒素やメタン等の不活性ガスが含まれていても良いが、一酸化炭素分圧として0.5~5MPa、好ましくは1~3MPaの範囲で実施する。一酸化炭素分圧が0.5MPaより高ければ、カルボニル化反応が十分に進行し、不均化や重合等の副反応が併発せず、高収率に目的物である脂環式カルボニル化合物を得ることができる。また一酸化炭素分圧は5MPa以下であることが設備負荷の観点から好ましい。
カルボニル化工程に使用するHFは、反応の溶媒であり、触媒であり、かつ副原料となるため、実質的に無水のものを用いる。HFの使用量は、原料のモノエン化合物に対して4~15モル倍、好ましくは6~10モル倍である。HFのモル比が4モル倍以上あれば、カルボニル化反応は効率良く進行し、不均化や重合等の副反応を抑制でき、高収率で目的物である脂環式カルボニル化合物を得ることができる。また、原料コスト及び生産性の観点から15モル倍以下のHFの使用が好ましい。
カルボニル化反応の形式には特に制限なく、回分式、半連続式、連続式等の何れの方法でも良い。
カルボニル化反応で生成した酸フロライド反応液は、炭素数1~4のアルコールと反応させて脂環式エステル化合物とする。反応装置の腐食性の観点から、この際、酸フロライド反応液に所定量のアルコールを添加していく方法が好ましい。
また、カルボニル化反応で生成した酸フロライド反応液は、該エステル化工程の代わりに、(I)過剰のHFを留去した後、蒸留等の常法により精製し、酸フロライドのまま次工程であるカルボニル基の還元工程の原料として用いることもできるし、(II)過剰のHFを留去した後、加水分解させて相当するカルボン酸を得て、該カルボン酸を蒸留等の常法により精製後に次工程であるカルボニル基の還元工程の原料として用いることもできる。
エステル化工程で得られた一般式(4)で表されるシクロヘキサンカルボニル化合物の還元は、通常、カルボニル化合物をアルコールに還元する際に用いられる方法であればいずれも使用でき、特に限定されない。例えば第5版 実験化学講座14巻(丸善株式会社)11~27頁記載のヒドリド還元、金属および金属塩による還元、接触水素化などをいずれも用いることができるが、経済性の観点から接触水素化による還元が好ましい。
本発明のカルボニル基の還元工程は無溶媒で行うことができるが、溶媒を使用しても良い。
本発明のカルボニル基の還元工程における水素の圧力は、反応平衡をアルコール側に移動させるという観点からは高圧ほど好ましいが、設備コストを考慮して、1~30MPaが好ましく、2~20MPaがより好ましく、5~10MPaが更に好ましい。
モノエン化合物と脂環式アルコールを分析する場合、ガスクロマトグラフィーは、「GC-17A」(商品名;(株)島津製作所製)と、キャピラリーカラムとして「HR-1」(商品名;信和化工(株)製;0.32mmφ×25m)を用いた。昇温条件は100℃から250℃まで2℃/min.で昇温した。
冷却後、テルピノーレン(和光純薬工業(株)製;特級)を500.0g仕込み、110℃、水素圧2MPa、8時間攪拌して水素化反応を行った。反応液を濾過して触媒を除き、1-イソプロピル-4-メチルシクロヘキセン濃度22.5%、4-イソプロピル-1-メチルシクロヘキサン濃度10.2%、ヘプタン濃度46.5%含有反応液を980.0g得た(収率44.2%、テルピノーレン基準)。
得られた液をエバポレーターにより低沸物を除去した後、理論段数20段の精留塔を用いて精留を行ったところ(留出温度118℃、真空度200torr)、1-イソプロピル-4-メチルシクロヘキセン濃度61.6%、4-イソプロピル-1-メチルシクロヘキサン濃度31.0%の混合物が、主留部分として、282.0g得られた(収率34.8%、テルピノーレン基準)。
ナックドライブ式撹拌機と上部に3個の入口ノズル、底部に1個の抜き出しノズルを備え、ジャケットにより内部温度を制御できる内容積500mlのステンレス製オートクレーブを用いて実験を行った。
まずオートクレーブ内部を一酸化炭素で置換した後、無水フッ化水素90g(4.5モル)を導入し、液温-30℃とした後、一酸化炭素にて2MPaまで加圧した。
反応温度を-30℃に保持し、かつ反応圧力を2MPaに保ちながら、調製例1で調製した反応液のヘプタン溶液(1-イソプロピル-4-メチルシクロヘキセン濃度32.0%、4-イソプロピル-1-メチルシクロヘキサン濃度16.1%、ヘプタン濃度51.9%)277.5g(1-イソプロピル-4-メチルシクロヘキセン:0.64モルを含有)をオートクレーブ上部より供給してカルボニル化反応を行った。供給終了後、一酸化炭素の吸収が認められなくなるまで約10分間撹拌を継続した。
引き続いて、反応温度を-30℃に保持しながら、メタノールをオートクレーブ上部より30.9g(0.96モル)供給して、撹拌下にて1時間エステル化を行った。
反応液をオートクレーブ底部より氷水中に抜き出し、油相と水相を分離した後、油相を2%苛性ソーダ水溶液100mlで2回,蒸留水100mlで2回洗浄し、10gの無水硫酸ナトリウムで脱水した。得られた液をガスクロマトグラフィーで分析した結果、1-イソプロピル-4-メチルシクロヘキサンカルボン酸メチルの異性体比率が62.8%、その他異性体が37.2%である混合物が得られた。
表1に示す組成を持つ香料組成物95質量部に、実施例1で得られた化学式(1)の化合物を5質量部加えることにより、パイナップルを想起させ爽やかな甘さを特徴とするフルーツタイプの香料組成物を得ることができた。
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CN104736514A (zh) * | 2012-10-15 | 2015-06-24 | 三菱瓦斯化学株式会社 | 新型脂环式二羧酸酯化合物及其制造方法 |
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JP7255595B2 (ja) * | 2018-07-13 | 2023-04-11 | 三菱瓦斯化学株式会社 | カルボン酸エステル化合物、その製造方法、組成物、及び、香料組成物 |
US20230391701A1 (en) | 2020-10-19 | 2023-12-07 | Mitsubishi Gas Chemical Company, Inc. | Alicyclic alcohol, alicyclic alcohol composition, and perfume composition |
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