WO2016208699A1 - 光学活性含フッ素アルキルエチレンオキシドの工業的な製造方法 - Google Patents
光学活性含フッ素アルキルエチレンオキシドの工業的な製造方法 Download PDFInfo
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- C07C29/09—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by hydrolysis
- C07C29/10—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by hydrolysis of ethers, including cyclic ethers, e.g. oxiranes
- C07C29/103—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by hydrolysis of ethers, including cyclic ethers, e.g. oxiranes of cyclic ethers
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- 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
- C07C29/143—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 ketones
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- C12Y101/01—Oxidoreductases acting on the CH-OH group of donors (1.1) with NAD+ or NADP+ as acceptor (1.1.1)
- C12Y101/01001—Alcohol dehydrogenase (1.1.1.1)
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- C12Y101/01—Oxidoreductases acting on the CH-OH group of donors (1.1) with NAD+ or NADP+ as acceptor (1.1.1)
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- C12N1/00—Microorganisms, e.g. protozoa; Compositions thereof; Processes of propagating, maintaining or preserving microorganisms or compositions thereof; Processes of preparing or isolating a composition containing a microorganism; Culture media therefor
- C12N1/14—Fungi; Culture media therefor
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- C12N1/00—Microorganisms, e.g. protozoa; Compositions thereof; Processes of propagating, maintaining or preserving microorganisms or compositions thereof; Processes of preparing or isolating a composition containing a microorganism; Culture media therefor
- C12N1/14—Fungi; Culture media therefor
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- C12R2001/00—Microorganisms ; Processes using microorganisms
- C12R2001/645—Fungi ; Processes using fungi
- C12R2001/72—Candida
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/582—Recycling of unreacted starting or intermediate materials
Definitions
- the present invention relates to an industrial production method of optically active fluorine-containing alkylethylene oxide.
- Non-Patent Document 1 discloses a method using asymmetric oxidation of 1,1,1-trifluoropropene using a microorganism
- Non-Patent Document 2 describes a racemic 2 product.
- a method based on kinetic optical resolution of trifluoromethylethylene oxide was obtained in Non-Patent Document 3 by asymmetric reduction of 3-bromo-1,1,1-trifluoro-2-propanone with an asymmetric reducing agent.
- Non-Patent Document 4 discloses a method for ring closure by allowing a base to act on optically active 1-bromo-3,3,3-trifluoroisopropyl alcohol. In Non-Patent Document 4, an optically active 3,3,3-trifluorolactic acid is used.
- Patent Literature a method of reacting the resulting sulfonic acid ester with a base through a multi-step process such as protection with a protective group for a substituent, deprotection, and esterification is disclosed in Patent Literature Then, optical purity is improved by recrystallizing optically active 3,3,3-trifluoro-1,2-propanediol, and then the base is acted after being induced to optically active 1-chloro-3,3,3-trifluoroisopropyl alcohol. And a method for closing the ring is disclosed.
- Patent Document 2 optically active 3,3,3-trifluoro-1,2-propanediol was derived from optically active 3,3,3-trifluorolactic acid, and a cyclic sulfate ester was obtained. Then, a method for converting into a halohydrin form and deriving into optically active 2-trifluoromethylethylene oxide is disclosed.
- Non-Patent Document 2 discloses a method based on kinetic optical resolution of racemic 2-monofluoromethylethylene oxide.
- Non-Patent Document 1 discloses a method of asymmetric oxidation of 1,1,1-trifluoropropene by microorganisms, and biological asymmetric oxidation is not disclosed. Although it can be applied, only the S-enantiomer can be produced.
- Non-Patent Document 2 discloses a method based on kinetic optical resolution of racemic 2-trifluoromethylethylene oxide using a chemical catalyst, and optically active 2-trifluoromethyl having an extremely high optical purity of 99% ee or higher. Although it has been disclosed that ethylene oxide can be obtained, it has been difficult to perform the optical resolution again using 2-trifluoromethylethylene oxide having undesired stereochemistry.
- Non-Patent Document 3 discloses a method by asymmetric reduction of 3-bromo-1,1,1-trifluoro-2-propanone using an asymmetric reducing agent, and optical activity with a high optical purity of 96% ee.
- Non-Patent Document 4 discloses a method for obtaining 2-trifluoromethylethylene oxide from optically active 3,3,3-trifluorolactic acid. However, the reaction is not only complicated in multiple stages, but also has a maximum theoretical yield. It was 50% and could not be said to be an industrial method.
- Patent Document 1 an optically active 3,3,3-trifluoro-1,2-propanediol obtained by various methods is derived into 1-chloro-3,3,3-trifluoroisopropyl alcohol, and the base is used. Although a method for ring closure has been disclosed, there was a problem that the yield was low.
- An object of the present invention is to provide a method for industrially producing an optically active fluorine-containing alkylethylene oxide.
- the present inventors have made asymmetric reduction proceed efficiently by allowing a specific biocatalyst (microorganism or enzyme) to act on the fluorine-containing alkylchloromethyl ketone.
- the present inventors have found a method for obtaining optically active fluorine-containing alkylchloromethyl alcohol with high stereoselectivity.
- the present invention has been completed by obtaining knowledge that the alcohol is derived into fluorine-containing alkylethylene oxide with high yield while maintaining optical purity. That is, the present invention provides the inventions described in [Invention 1]-[Invention 17] below.
- Rf represents a linear or branched fluoroalkyl group having 1 to 6 carbon atoms having at least one fluorine atom.
- the microorganisms include Cryptococcus curvatus, Pichia farinosa, Torulaspora delbrueckii, Candida cacaoi, Rhodotorula mucibolis, Rhodotorula mucilaginosa
- the manufacturing method according to the invention 1 or 2 which is at least one selected from the group consisting of johnsonii) and Trichosporon cutaneum.
- invention 5 The production method according to claim 1, wherein the enzyme is alcohol dehydrogenase or carbonyl reductase.
- the alcohol dehydrogenase or carbonyl reductase is a microorganism of the family Asteraceae, Saccharomyces, Rhodotorula, Sporidivorus, Trichosporonae, the treated product, the culture solution, and / or an enzyme obtained from the microorganism.
- invention 7 The production method according to any one of inventions 1 to 6, wherein a temperature in the reaction (reaction temperature) is 5 to 60 ° C.
- reaction temperature is 5 to 60 ° C.
- inventions 1 to 7 wherein the pH in the reaction (pH during the reaction) is in the range of 4.0 to 8.0.
- inventions 1 to 8 comprising a step of distilling a mixed solution containing the optically active fluorinated alcohol obtained after completion of the reaction and the impurities to separate impurities from the mixed solution and purifying the optically active fluorinated alcohol.
- the manufacturing method in any one of.
- invention 10 An optically active fluorine-containing alkylchloromethyl alcohol represented by the formula [2] is produced by any one of the methods of the inventions 1 to 9, and then a base is allowed to act on the alcohol, the formula [3]:
- the base is an alkali metal hydride, alkaline earth metal hydride, alkali metal hydroxide, alkaline earth metal hydroxide, alkali metal carbonate, alkaline earth metal carbonate, alkali metal bicarbonate, and alkaline earth
- the step of deriving the fluorine-containing alkyl-1,2-ethanediol is carried out by hydrolysis as it is without isolating the optically active fluorine-containing alkylethylene oxide obtained by the above reaction.
- [Invention 16] formula:
- the present inventors diligently screened biocatalysts that can achieve the object of the present invention from biocatalysts such as microbial cells and enzymes, and are highly convenient as intermediates for optically active fluorinated alkylethylene oxides.
- the inventors have found a biocatalyst that gives optically active fluorine-containing alkylchloromethyl alcohol, and have completed the present invention.
- Fluorine-containing alkyl bromomethyl ketone represented by the formula (1) was also listed as a candidate, but in the method using a biocatalyst, it is necessary to use water as a solvent. It was confirmed that no fluorine alkyl bromoalcohol was obtained (see Comparative Examples described later). Thus, based on the knowledge that fluorine-containing alkyl bromomethyl ketone cannot be used in the method using a biocatalyst, the present invention uses the above-mentioned compound into which a chlorine atom has been introduced, which is stable even in the presence of water.
- the concentration of the fluorine-containing alkyl chloromethyl ketone means the concentration (w / v) of the ketone in the reaction solution (the concentration of the reduced product is not considered (excluded)), and throughout the entire reaction. It does not define the total amount of ketone added.
- optically active fluorinated alkyl chloromethyl alcohol produced in the reaction solution can be recovered by distillation or extraction, and converted to optically active fluorinated alkyl ethylene oxide while maintaining optical purity by allowing the base to act on the alcohol. can do. Further, the optically active fluorinated alkylethylene oxide can be converted to optically active fluorinated alkyl-1,2-ethanediol while maintaining optical purity by hydrolysis.
- Optically active 2-difluoromethylethylene oxide in the case of optically active fluorine-containing alkylethylene oxide represented by the formula [3], when Rf is a difluoromethyl group
- optically active 1-chloro-3 a precursor thereof, 3-difluoroisopropyl alcohol (in the case of optically active fluorine-containing alkylchloromethyl alcohol represented by the formula [2], when Rf is a difluoromethyl group) is a novel compound.
- an optically active fluorine-containing alkylethylene oxide that is important as an intermediate for medical and agricultural chemicals can be efficiently produced.
- a biocatalyst that gives optically active fluorine-containing alkylchloromethyl alcohol which is a precursor of ethylene oxide
- P coenzyme NAD
- the present invention is directed to reacting a fluorine-containing alkylchloromethyl ketone represented by the formula [1] with a microorganism having an activity for asymmetric reduction of the ketone or an enzyme having the activity, thereby producing an optical activity represented by the formula [2].
- Fluorine-containing alkyl chloromethyl alcohol is obtained (referred to herein as “Step 1”), and an optically active fluorinated alkyl chloromethyl alcohol is produced by the method of Step 1 and the base is allowed to act on the alcohol.
- an optically active fluorine-containing alkylethylene oxide represented by the formula [3] is obtained by a ring-closing reaction (referred to herein as “Step 2”).
- an optically active fluorine-containing alkylethylene oxide is produced by the method of Step 2, the ethylene oxide is hydrolyzed, and an optically active fluorine-containing alkyl-1,2-ethanediol represented by the formula [4] is obtained by a ring-opening reaction. (Hereinafter referred to as “Step 3”.) Including the production method, the scheme is summarized below.
- Step 1 Step 1 will be described.
- the fluorine-containing alkyl chloromethyl ketone represented by the formula [1] is a known compound and may be appropriately prepared by those skilled in the art based on the prior art, or commercially available ones may be used.
- Rf is a C 1-6 linear or branched fluoroalkyl group having at least one fluorine atom.
- Specific structures include trifluoromethyl group, pentafluoroethyl group, heptafluoropropyl group, nonafluorobutyl group, difluoromethyl group, 1,1-difluoroethyl group, 2,2-difluoroethyl group, 1,1 -Difluoropropyl group, 2,2-difluoropropyl group, 3,3-difluoropropyl group, 1,1-difluorobutyl group, 2,2-difluorobutyl group, 3,3-difluorobutyl group, 4,4-difluoro Butyl group, monofluoromethyl group, 1-monofluoroethyl group, 2-monofluoroethyl group, 1-mono
- Trifluoromethyl group among them pentafluoroethyl group, heptafluoropropyl group, a nonafluorobutyl group, difluoromethyl group are preferable, a trifluoromethyl group, difluoromethyl group is particularly preferable.
- the main reaction in Step 1 is that an optically active fluorinated alkyl chloromethyl represented by the formula [2] is reacted with a fluorinated alkyl chloromethyl ketone by allowing a microorganism having an activity to asymmetrically reduce the ketone or an enzyme having the activity to act. This is a reaction to obtain alcohol.
- highly convenient fluorine-containing alkylchloromethyl alcohol can be obtained as an intermediate of optically active fluorine-containing ethylene oxide.
- the fluorine-containing alkyl chloromethyl ketone represented by the formula [1] is obtained by adding water or alcohol to the ketone, as shown in the examples below.
- Rf is the same as Formula [1].
- R represents a linear or branched alkyl group having 1 to 6 carbon atoms.
- An alcohol adduct represented by can be used in the same manner. Accordingly, these hydrates and alcohol adducts are also treated as being included in claim 1 of the present application.
- R in the formula [7] represents a linear or branched alkyl group having 1 to 6 carbon atoms.
- An ethyl group, a propyl group, an isopropyl group, a 1-butyl group, an isobutyl group, a tert-butyl group, and a 1-cyclohexyl group are particularly preferable.
- the microorganism used here is not particularly limited, and can be appropriately selected from bacteria, yeast, filamentous fungi, and the like.
- Cryptococcus curvatus, Pichia farinosa, Torulaspora delbrueckii At least one selected from the group consisting of Candida cacaoi, Rhodotorula mucilaginosa, Sporidibolus johnsonii, Trichosporon cutaneum, Trichosporon cutaneum; ⁇
- it can use equally about the
- microorganisms have been deposited with the Independent Administrative Institution's Product Evaluation Technology Infrastructure (2-49-10 Nishihara, Shibuya-ku, Tokyo 151-0066) with the accession numbers shown in the table below. These microorganisms may have been deposited with other microorganism strain storage institutions and can be used in the same manner. These microorganisms are publicly available and can be easily obtained by those skilled in the art.
- cultured cells can be used as they are, as well as cells crushed with ultrasonic waves or glass beads, cells immobilized with acrylamide, organic compounds such as acetone and glutaraldehyde.
- the cells treated with the above, cells supported on inorganic carriers such as alumina, silica, zeolite and diatomaceous earth, and cell-free extracts prepared from the microorganisms can also be used.
- the optical purity is moderate (40 to 70% ee) due to the influence of “reaction of reductase having opposite stereoselectivity” that exists in multiple numbers in the microbial cells. In some cases, it is possible to obtain an optical purity higher than the optical purity exhibited by the original cells by purifying and using the target enzyme.
- an enzyme that catalyzes the reaction such as alcohol dehydrogenase (an enzyme that reversibly reduces a ketone) or a carbonyl reductase (an enzyme that irreversibly reduces a ketone) is purified from a microorganism that gives the above optically active substance
- an enzyme that catalyzes the reaction such as alcohol dehydrogenase (an enzyme that reversibly reduces a ketone) or a carbonyl reductase (an enzyme that irreversibly reduces a ketone)
- general protein purification methods such as ammonium sulfate fractionation, hydrophobic chromatography, ion exchange chromatography, and gel filtration chromatography can be applied.
- a gene recombinant into which an enzyme gene cloned from the microorganism has been introduced can be used in the same manner.
- the isolation source of the enzyme can be used for the microorganism obtained by the screening, and is used in the method of the present invention from the species to which the microorganism belongs, that is, from the microorganism of the family Asteraceae, Saccharomyces, Rhodotorula, Sporidivorus, Trichosporonae.
- the resulting alcohol dehydrogenase or carbonyl reductase can be obtained.
- a commercially available enzyme can be used, and the enzyme can be selected by screening using a fluorine-containing alkyl chloromethyl ketone as a substrate.
- Commercially available enzymes include, for example, “alcohol dehydrogenase, yeast derived” from Oriental Yeast Co., Ltd., “alcohol dehydrogenase (ZM-ADH, derived from Zymomonas mobilis)” from Unitika Ltd., Chiralscreen from Daicel Corporation.
- E001 (Registered Trademark) OH E001 (hereinafter the same), E004, E007, E008, E039, E048, E052, E073, E077, E085, E094 may be mentioned, preferably E001, E007, E039, E085, E001, E039, and E094 are more preferable than E094. Moreover, the gene recombinant which expresses the said enzyme can be used similarly.
- a medium solid medium or liquid medium
- nutrient components usually used for microorganism culture can be used.
- a reduction reaction of a water-soluble fluorine-containing alkyl chloromethyl ketone is performed.
- Liquid medium is preferred.
- the medium is a carbon source such as glucose, sucrose, maltose, lactose, fructose, trehalose, mannose, mannitol, dextrose and other sugars, methanol, ethanol, propanol, butanol, pentanol, hexanol, glycerol and other alcohols, citric acid, glutamic acid Organic acids such as malic acid and ammonia, ammonium salts, amino acids, peptone, polypeptone, casamino acids, urea, yeast extract, malt extract, corn steep liquor and the like are used as nitrogen sources.
- a carbon source such as glucose, sucrose, maltose, lactose, fructose, trehalose, mannose, mannitol, dextrose and other sugars, methanol, ethanol, propanol, butanol, pentanol, hexanol, glycerol and other alcohols, citric acid, glut
- inorganic salts such as potassium dihydrogen phosphate and dipotassium hydrogen phosphate, vitamins such as inositol and nicotinic acid, and media such as trace metals such as iron, copper, magnesium, boron, manganese and molybdenum Compositions can be added as appropriate.
- carbon source nitrogen source
- inorganic salt it is preferable to add an amount sufficient for the microorganism to grow and an amount that does not inhibit the growth, and usually 5 to 80 g, preferably 10 to 1 L of the medium. Add ⁇ 40g. The same applies to the nitrogen source, and it is preferable to add an amount sufficient for the microorganisms to proliferate and not to inhibit the growth.
- 5 to 60 g, preferably 10 to 50 g, and inorganic salt as a nutrient source for 1 L of the medium. It is necessary to add elements necessary for the growth of microorganisms. However, since growth is inhibited at a high concentration, usually 0.001 to 10 g is added to 1 L of the medium. In addition, these can be used combining several types according to microorganisms.
- the pH in the medium needs to be adjusted within a range suitable for the growth of microorganisms, and is usually 4.0 to 10.0, preferably 6.0 to 9.0.
- the temperature range in the culture needs to be adjusted in a range suitable for the growth of microorganisms, and is usually 10 to 50 ° C., preferably 20 to 40 ° C.
- vvm means aeration to medium volume per minute.
- V olume / v olume / m inute More preferably 0.5 to 2 vvm.
- the medium volume should be set to 20% or less with respect to the volume of the instrument, and a vent plug such as a cotton plug or a silicone plug may be attached.
- the medium is preferably stirred. In the case of a culture tank, the stirring ability of the apparatus is preferably 10 to 100%, more preferably 20 to 90%.
- a shaker preferably 50 to 300 rpm, more preferably 100 to 280 rpm.
- the culture time may be a time required for the growth of microorganisms to converge, and is 6 to 72 hours, preferably 12 to 48 hours.
- a suspension in which the microorganism is cultured can be used for the reaction as it is. If the components produced during the cultivation adversely affect the reduction reaction, the suspension is again made using the microbial cells (stationary microbial cells) obtained by collecting the microbial cells once from the culture solution by an operation such as centrifugation. May be prepared and used in the reaction.
- microbial cells stationary microbial cells
- Various cell extracts such as those obtained by disrupting cells of cultured microbial cells and enzymes prepared from the cultured microbial cells can also be used in the reaction.
- the enzyme purified enzyme
- a buffer solution in which the enzyme is dissolved. Since this reaction is a reduction reaction, a weakly acidic buffer solution is preferable.
- the concentration of the ketone in the addition of the fluorine-containing alkyl chloromethyl ketone to these suspensions or buffers, it is preferable to maintain the concentration of the ketone so that the reduction reaction proceeds smoothly and does not adversely affect the activity of microorganisms or enzymes. .
- concentration of the ketone is higher than 20% (w / v)
- microorganisms may be killed or the enzyme may be denatured. Therefore, a concentration below this value, that is, usually 0.01 to 15% ( w / v), preferably 0.05 to 10% (w / v).
- the basis for the volume of the ketone concentration calculation is, for example, the amount of the culture solution dispensed in a test tube before steam sterilization in Example 1 described later, and the total amount of suspension of microorganisms after culture in Example 7 described later. Think of it as a guide.
- the temperature at which the microorganism or enzyme is allowed to act on the fluorine-containing alkyl chloromethyl ketone as a substrate (that is, the reaction temperature) needs to be maintained in a range suitable for the microorganism or enzyme, and is usually 5 to 60 ° C., preferably It is 15 to 50 ° C, more preferably 15 to 38 ° C.
- the pH at the time of the action (that is, the pH during the reaction) needs to be maintained in a suitable range, and is usually 4.0 to 8.0, preferably 5.5 to 8.0, more preferably 5 .5 to 7.0.
- the reaction efficiency decreases, so the reaction solution is stirred while stirring.
- the reaction can be carried out without aeration, but aeration may be carried out if necessary.
- the air flow rate is preferably 0.3 vvm or less, More preferably, it is 0.1 vvm or less.
- the reaction time may be determined depending on how the target product is produced, and is usually 6 to 312 hours.
- the coenzyme NAD (P) H (hydrogen donor) used for the reduction reaction is a coenzyme regenerating enzyme (glucose dehydrogenase, formate dehydrogenase, glycerol dehydrogenase, alcohol dehydrogenase, The same can be regenerated from coenzyme NAD (P), and in microorganism reactions, the coenzyme regenerating enzyme inherent in the microorganism is used, and for recombinants, the coenzyme regenerating enzyme expressed by incorporating the desired gene is used. be able to.
- Coenzyme NAD (P) H can be reduced by adding a commercially available one, but it is very expensive and is not economical.
- the reaction end solution mixed solution containing impurities after the completion of the reaction
- organic synthesis such as distillation, extraction with organic solvents, solid phase extraction, etc.
- Isolation methods can be employed.
- the present compound can be easily and efficiently recovered as an aqueous solution by subjecting it to distillation directly from the reaction-finished solution or the filtrate after removing the cells by filtration if necessary. Is very useful compared to the prior art.
- the obtained aqueous solution of the crude product can be subjected to purification operations such as dehydration, activated carbon, fractional distillation, column chromatography, etc., if necessary.
- ethylene oxide It can be used for the synthesis of ethylene oxide, which is one of desirable embodiments from an industrial viewpoint.
- a method for purifying the crude product extraction with an organic solvent and subsequent fractional distillation are particularly preferred.
- organic solvent ether solvents, ester solvents, halogen solvents, aliphatic hydrocarbon solvents, aromatic hydrocarbon solvents and the like can be employed.
- Step 2 diethyl ether, diisopropyl ether, methyl -tert- butyl ether, 2-methyltetrahydrofuran, ethyl acetate, methylene chloride, chloroform, n- hexane, toluene especially preferred.
- solvents may be used alone or in combination.
- the filtrate after removing the cells from the reaction-finished solution may be directly extracted by using the organic solvent shown above, and the optically active fluorinated alkylchloromethyl alcohol may be recovered by concentrating the filtrate. I can do it. [Step 2] Next, step 2 will be described.
- step 2 the optically active fluorine-containing alkylchloromethyl alcohol represented by the formula [2] produced in the above step is used as a raw material, and a base is allowed to act on the alcohol, so that This is a step of obtaining fluorine alkyl ethylene oxide.
- a base is allowed to act on the alcohol, so that
- Examples of the base used in this step include inorganic bases and organic bases.
- Examples of the inorganic base include alkali metal hydride, alkaline earth metal hydride, alkali metal hydroxide, alkaline earth metal hydroxide, alkali metal carbonate, alkaline earth metal carbonate, alkali metal bicarbonate or alkali.
- Examples include earth metal hydrogen carbonate, alkali metal amide, alkali metal and the like.
- alkali metal hydrides, alkali metal hydroxides, alkali metal carbonates, alkaline earth metal carbonates, alkali metal hydrogen carbonates or alkaline earth metal hydrogen carbonates are preferable, alkali metal hydrides, alkali metal carbonates.
- Alkaline earth metal carbonates or alkali metal hydrogen carbonates are particularly preferred. Specifically, lithium hydride, sodium hydride, potassium hydride, rubidium hydride, cesium hydride, magnesium hydride, calcium hydride, lithium hydroxide, sodium hydroxide, potassium hydroxide, rubidium hydroxide, hydroxide Cesium, magnesium hydroxide, calcium hydroxide, lithium carbonate, sodium carbonate, potassium carbonate, rubidium carbonate, cesium carbonate, magnesium carbonate, calcium carbonate, lithium bicarbonate, sodium bicarbonate, potassium bicarbonate, rubidium bicarbonate, cesium bicarbonate , Magnesium hydrogen carbonate, calcium hydrogen carbonate, sodium amide, potassium amide, sodium, potassium, among others, lithium hydride, sodium hydride, potassium hydride, lithium hydroxide, sodium hydroxide, potassium hydroxide , Rubidium hydroxide, cesium hydroxide, sodium carbonate, potassium carbonate, rubidium carbonate, cesium carbonate, calcium carbonate, calcium
- examples of the organic base include pyridines, trialkylamines, N, N-dialkylanilines and the like, and pyridines and trialkylamines are preferable.
- the amount of the base used may be 0.1 mol or more, preferably 0.2 to 20 mol, particularly 0.3 to 10 mol, relative to the fluorine-containing alkylchloromethyl alcohol represented by the general formula [2]. preferable.
- reaction solvent examples include water, aliphatic hydrocarbons such as n-hexane and n-heptane, aromatic hydrocarbons such as toluene and xylene, and halogenated hydrocarbons such as methylene chloride and 1,2-dichloroethane.
- reaction solvents can be used alone or in combination. In the present invention, it can also be carried out without solvent.
- the reaction solvent may be used in an amount of 0.01 L or more, preferably 0.03 to 10 L, particularly 0.05 to 7 L with respect to 1 mol of the fluorinated alkylchloromethyl alcohol represented by the general formula [2]. preferable.
- the reaction time may be within 72 hours and varies depending on the raw material substrate and reaction conditions. Therefore, the progress of the reaction is traced by analysis means such as gas chromatography, liquid chromatography, nuclear magnetic resonance, etc.
- the end point is preferably the point at which almost disappeared.
- the reaction temperature is preferably in the range of ⁇ 30 to 120 ° C., usually ⁇ 20 to 100 ° C., more preferably ⁇ 10 to 80 ° C.
- all reagents may be mixed at the same time to start the reaction.
- a method of slowly adding a base to fluorine-containing alkylchloromethyl alcohol while cooling with ice for exothermic reaction, or vice versa Since a preferable temperature range can be maintained by adopting the method, it is one of the preferable embodiments.
- the temperature is too high, the optically active fluorine-containing alkylethylene oxide generated in the system scatters out of the system. Therefore, the reaction may be performed while collecting it with a cooler.
- the solvent for extraction those which do not react with the ethylene oxide are preferable, aliphatic hydrocarbons such as n-heptane and n-hexane, aromatic hydrocarbons such as benzene and toluene, and halogens such as methylene chloride and chloroform. And ether solvents such as fluorinated hydrocarbons, diethyl ether and t-butyl methyl ether, and ester solvents such as ethyl acetate, methyl acetate and butyl acetate.
- aliphatic hydrocarbons such as n-heptane and n-hexane
- aromatic hydrocarbons such as benzene and toluene
- halogens such as methylene chloride and chloroform.
- ether solvents such as fluorinated hydrocarbons, diethyl ether and t-butyl methyl ether
- ester solvents such as ethyl acetate, methyl
- step 3 Next, step 3 will be described.
- the optically active fluorine-containing alkylethylene oxide which is the target compound can be obtained through the steps 1 to 2, but in this step, the ring is opened by hydrolysis of the ethylene oxide, and the optically active compound is obtained.
- the ethylene oxide is opened by hydrolysis, but the reaction can be accelerated by adding an inorganic base, an organic base, an inorganic acid or an organic acid.
- Inorganic bases include alkali metal hydrides, alkaline earth metal hydrides, alkali metal hydroxides, alkaline earth metal hydroxides, alkali metal carbonates, alkaline earth metal carbonates, alkali metal hydrogen carbonates, alkalis An earth metal hydrogen carbonate, an alkali metal amide, an alkali metal, or the like can be given.
- alkali metal hydrides, alkali metal hydroxides, alkali metal carbonates, alkaline earth metal carbonates, alkali metal hydrogen carbonates or alkaline earth metal hydrogen carbonates are preferable, alkali metal hydrides, alkali metal hydroxides.
- alkali metal carbonates, alkaline earth metal carbonates or alkali metal hydrogen carbonates are preferable, alkali metal hydrides, alkali metal hydroxides.
- alkali metal carbonates, alkaline earth metal carbonates or alkali metal hydrogen carbonates are preferable, alkali metal hydrides, alkali metal hydroxides.
- organic base examples include pyridines, trialkylamines, N, N-dialkylanilines, etc.
- pyridines and trialkylamines are preferable. Specifically, pyridine, methylpyridine, ethylpyridine, dimethylpyridine (lutidine), methylethylpyridine, diethylpyridine, trimethylpyridine (collidine), dimethylaminopyridine, 2,2′-bipyridyl, 4-dimethylaminopyridine, trimethylamine , Triethylamine, tripropylamine, and tributylamine, diisopropylethylamine, N, N-dimethylaniline, N, N-diethylaniline, and the like.
- pyridine, trimethylamine, triethylamine, and tributylamine are preferable. These can be used alone or in combination of two or more. Further, two or more of these organic bases and inorganic bases can be used in combination.
- the inorganic acid include hydrochloric acid, sulfuric acid, phosphoric acid, nitric acid, and boric acid.
- the organic acid include acetic acid, citric acid, formic acid, lactic acid, oxalic acid, tartaric acid, methanesulfonic acid and the like. Of these, hydrochloric acid and sulfuric acid are preferable from the viewpoint of easy availability, cost, and ease of handling, and these can be used alone or in combination of two or more.
- the amount of the base or acid used may be 0.01 mol or more, preferably 0.02 to 20 mol, particularly 0.03 to 10 mol, relative to the fluorine-containing alkylethylene oxide represented by the general formula [3]. preferable.
- Water may be used in an amount of 0.5 mol or more, preferably 0.7 mol or more, particularly preferably 0.9 mol or more based on the fluorine-containing alkylethylene oxide represented by the general formula [3].
- reaction solvent in addition to water, aliphatic hydrocarbons such as n-hexane and n-heptane, aromatic hydrocarbons such as toluene and xylene, halogenated carbonization such as methylene chloride, chloroform and 1,2-dichloroethane Hydrogen type, diethyl ether, tetrahydrofuran, diisopropyl ether, tetrahydrofuran, ether type such as tert-butyl methyl ether, ester type such as methyl acetate, ethyl acetate, n-butyl acetate, N, N-dimethylformamide, 1,3-dimethyl Examples include amides such as -2-imidazolidinone, nitriles such as acetonitrile and propionitrile, and dimethyl sulfoxide.
- aliphatic hydrocarbons such as n-hexane and n-heptane
- aromatic hydrocarbons
- reaction solvents can be used alone or in combination. In the present invention, it can also be carried out without solvent.
- the amount of the reaction solvent used may be 0.01 L or more, preferably 0.03 to 10 L, particularly preferably 0.05 to 7 L with respect to 1 mol of the fluorinated alkylethylene oxide represented by the general formula [3].
- the reaction time may be within 72 hours and varies depending on the raw material substrate and reaction conditions. Therefore, the progress of the reaction is traced by analysis means such as gas chromatography, liquid chromatography, nuclear magnetic resonance, etc.
- the end point is preferably the point at which almost disappeared.
- the reaction temperature is preferably in the range of ⁇ 30 to 150 ° C., usually 0 to 120 ° C., more preferably 10 to 100 ° C.
- all the reagents may be mixed at the same time to initiate the reaction.
- this reaction is also exothermic, so that the internal temperature is kept at an appropriate temperature and the fluorine-containing alkylethylene oxide is reacted.
- a preferable temperature range can be maintained by adopting a method of slowly adding an acid or a base, or a reverse dropping method thereof.
- solvents aliphatic hydrocarbons such as n-heptane and n-hexane, aromatic hydrocarbons such as benzene and toluene, halogenated hydrocarbons such as methylene chloride and chloroform, tetrahydrofuran, -Ethers such as methyltetrahydrofuran, diethyl ether, t-butyl methyl ether, cyclopentyl methyl ether, esters such as ethyl acetate, methyl acetate, butyl acetate, water such as n-butanol, n-pentanol, n-hexanol Examples thereof include alcohol solvents that are immiscible, among which tetrahydrofuran, 2-methyltetrahydrofuran, diethyl ether, t-butyl methyl ether, cyclopentyl methyl ether, n-butanol, and n-p
- the method for obtaining a high-purity target product by dehydrating the obtained fraction with a Dean-Stark apparatus or the like is This is one of the preferred forms of this process.
- the process 3 can be continuously performed without performing the post-process of the process 2. Specifically, after step 2 is completed, the reagent necessary for step 3 is added to the reaction-finished solution of step 2 without isolating the obtained fluorine-containing alkylethylene oxide, whereby optically active fluorine-containing alkyl-1, 2-ethanediol can be obtained.
- an optically active fluorine-containing alkyl-1,2-ethanediol (a compound obtained by hydrolyzing the oxide) (The target product of this step) may be produced in the reaction system.
- the objective is to produce the optically active fluorinated alkyl-1,2-ethanediol in this step
- the optically active fluorinated alkylethylene oxide and the optically active fluorinated alkyl-1,2-ethane in Step 2 are used.
- an optically active fluorine-containing alkyl-1,2-ethanediol which is the target compound of Step 3 (for example, Examples described later) 8).
- optically active fluorine-containing alkyl ethylene oxide separated by this purification operation can be reused separately as a starting material in Step 3.
- the most preferred form for obtaining optically active fluorine-containing alkyl-1,2-ethanediol directly from fluorine-containing alkylchloromethyl alcohol is a common organic base or inorganic base reagent in steps 2 and 3 in the presence of water. Can be efficiently derived into optically active fluorinated alkyl-1,2-ethanediol, particularly by using an inorganic base.
- high-purity optically active fluorinated alkyl-1,2-ethanediol can be produced by carrying out the treatment described in Step 3 in the same manner.
- a fluorine-containing alkylchloromethyl ketone is used as a starting material, and by applying suitable reaction conditions, an optically active fluorine-containing alkylchloromethyl alcohol that is highly convenient as a precursor of an optically active fluorine-containing alkylethylene oxide is obtained. It can be produced in large quantities, and subsequently can be easily derived into an optically active fluorine-containing alkylethylene oxide by allowing a base to act on the alcohol. Highly superior as an industrial manufacturing method.
- optical purity that can be employed practically can be obtained at 40% ee or more, particularly preferably 80% ee or more.
- This compound has high reactivity and is very useful as an intermediate for synthesizing optically active fluorine-containing organic compounds.
- the optical purity of the compound can also be improved by optical resolution using column chromatography, a recrystallization method, or the like. [Example] EXAMPLES Next, examples will be shown, but the present invention is not limited to the following examples.
- optically active 1-chloro-3,3-difluoroisopropyl alcohol could be obtained by an asymmetric reduction reaction using microorganisms.
- the strain used in this screening was high and had an optical purity of 68.8% ee, but a strain that gives higher optical purity can be found by widening the screening range.
- the enzyme which gives high optical purity can also be isolated by refine
- the Pichia farinosa NBRC 0462 strain was precultured in a 5 ml liquid medium prepared in a test tube ( ⁇ 1.6 cm ⁇ 15 cm) composed of 1000 ml of distilled water, 10 g of polypeptone, 5 g of yeast extract, and 10 g of sodium chloride.
- This culture solution was used in a 5 L culture tank (manufactured by Maruhishi Bioengineer Co., Ltd., MDN type 5L (S)), distilled water 2500 ml, glucose 25 g, peptone 12.5 g, yeast extract 7.5 g, malt
- the solution was put into a liquid medium after high-pressure steam sterilization composed of 7.5 g of extract, 7.5 g of potassium dihydrogen phosphate, and 5.0 g of dipotassium hydrogen phosphate.
- Culturing was performed at a temperature of 30 ° C., aeration of 1.25 L / min, and a stirring blade rotation speed of 400 rpm, and the pH during the cultivation was adjusted to pH 6.5 using 42.5% phosphoric acid and 14% aqueous ammonia.
- the culture solution after the culture was collected, and the cells were collected by centrifugation using a 500 ml centrifuge tube.
- 100 ml of 0.2 M pH 7.0 phosphate buffer was added to prepare a suspension.
- Using a bead-type cell crusher BioSpec, bead beater
- crush the cells in the suspension remove the glass beads, and centrifuge at 20,000 xg for 30 minutes for cell-free extraction.
- a liquid was prepared.
- Optical purity of 1-chloro-3,3,3-trifluoroisopropyl alcohol The mixture was extracted with ethyl acetate and measured by gas chromatography using a chiral column described below, and the conversion and optical purity after the reaction were measured, and are shown in Tables 5 and 6 below, respectively.
- the optical purity of 3,3,3-trifluoroisopropyl alcohol was derived from optically active 2-trifluoromethylethylene oxide and analyzed under the analysis conditions described below.
- BGB-174 (0.25 mm ⁇ 30 m ⁇ 0.25 ⁇ m) manufactured by BGB Analytic AG was used for the gas chromatography column, the carrier gas was nitrogen, the pressure was 163 kPa, and the column temperature was 60 to 90 ° C. (1 ° C. / Min) to 150 ° C. (10 ° C./min), and the vaporization chamber / detector (FID) temperature was calculated based on the peak area obtained under the analysis conditions of 230 ° C. The retention time of each enantiomer was 13.4 min for the R isomer and 13.7 min for the S isomer.
- This liquid medium is aseptically inoculated with a genetically engineered Escherichia coli that expresses a large amount of the alcohol dehydrogenase of Chiralscreen (registered trademark) OH E039 of Daicel Corporation, and cultured overnight at 30 ° C. and 160 spm.
- a preculture solution having an optical density (OD600) of 8.2 at a wavelength of 600 nm was obtained.
- a liquid medium composed of yeast extract, sodium glutamate, glucose, lactose, inorganic salts, and antifoaming agent is prepared in 2500 ml of distilled water, and a culture tank with a capacity of 5 L (manufactured by Maruhishi Bioengineer, MDN) Mold 5L (S)) and steam sterilized at 121 ° C. for 30 minutes.
- This culture tank was aseptically inoculated with 5 ml of the preculture, and cultured for 40 hours with stirring at 30 ° C., aeration 0.5 vvm, to prepare a suspension with optical density (OD600) 24.
- the pH during the cultivation was adjusted to around 7.0 using a 20% aqueous sodium carbonate solution and a 42.5% aqueous phosphoric acid solution.
- the aeration was changed to 0 vvm, and 80% wt / wt of 3-chloro-1,1-difluoro-2-propanone hydrate was added to the culture solution at 6.25% wt / v (156.25 g).
- the content was 125.0 g, 853 mmol), and the reductive reaction was performed at 20 ° C. and pH 6.2 for 24 hours while regenerating the coenzyme with formate dehydrogenase.
- the conversion after the reaction was 96%, and the optical purity was 83.0% ee (R).
- the optical purity was calculated from the area of the peak obtained at a detection wavelength of 230 nm.
- the retention time of each enantiomer was 24.2 min for the R isomer and 27.4 min for the S isomer.
- a liquid culture medium having a composition of 2000 ml of ion-exchanged water, 60 g of glucose, 30 g of peptone, 50 g of yeast extract, 4.8 g of potassium dihydrogen phosphate, and 2.5 g of dipotassium hydrogen phosphate was prepared, and a fermenter having a capacity of 5 L (( The product was applied to Maruryo Bio-Engineering Co., Ltd., MDN type 5L (S)) and steam sterilized at 121 ° C. for 60 minutes.
- Trichosporon cutaneum NBRC 1198 strain (individually evaluated for optical purity, 61.5% ee) precultured in a 300 ml baffled Erlenmeyer flask in which 50 ml of liquid medium having the same composition was placed in this liquid medium.
- 50 ml of a suspension of ⁇ 10 9 cfu / ml was inoculated, cultured at 30 ° C., aeration 1 vvm, stirring blade rotation speed 500 rpm for 24 hours, and 5.2 ⁇ 10 9 cfu / ml (92 g / L as wet weight)
- a suspension of was prepared.
- the pH was adjusted at this time using a 20% wt / wt aqueous sodium carbonate solution and adjusted to 6.5. After completion of the culture, aeration was stopped, the rotation speed of the stirring blade was changed to 50 rpm, and 125 g (853 mmol) of 3-chloro-1,1,1-trifluoro-2-propanone was added to 300 ml of ion exchange water prepared in a separate container.
- an online sugar concentration sensor online biosensor BF-410, manufactured by Biot Co., Ltd.
- a computer program that automatically hydrates and dissolves 200 g of glucose is used to maintain the glucose concentration at 2%. Added to the suspension. The reduction of the substrate by the microorganism was monitored every 24 hours, and after 144 hours, it was confirmed that the conversion rate was 86.3%, and the reaction was completed.
- the optical purity was calculated from the area of the peak obtained at a detection wavelength of 230 nm.
- the retention time of each enantiomer was 16.1 min for the R isomer and 18.2 min for the S isomer.
- This liquid medium is aseptically inoculated with a genetically engineered Escherichia coli that expresses a large amount of the alcohol dehydrogenase of Chiralscreen (registered trademark) OH E094 from Daicel Corporation, and cultured overnight at 30 ° C. and 160 spm.
- a preculture solution having an optical density (OD600) of 6.4 at a wavelength of 600 nm was obtained.
- a liquid medium composed of yeast extract, sodium glutamate, glucose, lactose, inorganic salts, and antifoaming agent is prepared in 2500 ml of distilled water, and a culture tank with a capacity of 5 L (manufactured by Maruhishi Bioengineer, MDN) Mold 5L (S)) and steam sterilized at 121 ° C. for 30 minutes.
- This culture tank was aseptically inoculated with 5 ml of the preculture, and cultured for 40 hours with stirring at 30 ° C., aeration 0.5 vvm to prepare a suspension with an optical density (OD600) 22.
- the pH during the cultivation was adjusted to around 7.0 using a 20% aqueous sodium carbonate solution and a 42.5% aqueous phosphoric acid solution.
- the aeration was changed to 0 vvm, and 90% wt / wt of 3-chloro-1,1-difluoro-2-propanone hydrate was 6.25% wt / v (156.25 g) with respect to the culture solution.
- the content was 140.6 g, 960 mmol), and the reductive reaction was performed at 30 ° C. and pH 6.0 for 24 hours while regenerating the coenzyme with glucose dehydrogenase.
- the 99% conversion optical purity after the reaction was 89.2% ee (S).
- This liquid medium is aseptically inoculated with a genetically engineered Escherichia coli that expresses a large amount of the alcohol dehydrogenase of Chiralscreen (registered trademark) OH E094 from Daicel Corporation, and cultured overnight at 30 ° C. and 160 spm.
- a preculture solution having an optical density (OD600) of 7.2 at a wavelength of 600 nm was obtained.
- a liquid medium composed of yeast extract, sodium glutamate, glucose, lactose, inorganic salts, and antifoaming agent is prepared in 2500 ml of distilled water, and a culture tank with a capacity of 5 L (manufactured by Maruhishi Bioengineer, MDN) Mold 5L (S)) and steam sterilized at 121 ° C. for 30 minutes.
- This culture tank was aseptically inoculated with 5 ml of the preculture, and cultured for 40 hours with stirring at 30 ° C., aeration 0.5 vvm to prepare a suspension with an optical density (OD600) 23.
- the pH during the cultivation was adjusted to around 7.0 using a 20% aqueous sodium carbonate solution and a 42.5% aqueous phosphoric acid solution.
- the aeration was changed to 0 vvm, and 93% wt / wt of 3-chloro-1,1-difluoro-2-propanone hydrate was 6.25% wt / v (151.2 g) with respect to the culture solution.
- the content was 140.6 g, 960 mmol), and the reductive reaction was performed at 30 ° C. and pH 6.0 for 24 hours while regenerating the coenzyme with glucose dehydrogenase.
- the 99% conversion optical purity after the reaction was 90.7% ee (S).
- the filtrate was extracted with 20 ml of THF, and the separated aqueous layer was further extracted with 20 ml of THF. Extraction was performed three times in total, and the combined organic layers were subjected to distillation under reduced pressure (internal pressure: 3.0 kPa, vapor temperature: 87 ° C.) to obtain 9.9 g of (R) -3,3-difluoro-1,2-propanediol, 0.8 088 mol, obtained in 88% yield.
- the purity measured by gas chromatography was 99.3%. When the optical purity was analyzed under the above analysis conditions, it was 90.6% ee.
- optically active fluorine-containing alkyl ethylene oxide that is the object of the production method of the present invention can be used as an intermediate for medical and agricultural chemicals.
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Abstract
Description
特許文献1では種々の方法で得られた、光学活性3,3,3-トリフルオロ-1,2-プロパンジオールを1-クロロ-3,3,3-トリフルオロイソプロピルアルコールに誘導し、塩基により閉環する方法が開示されているが、収率が低いという問題があった。
すなわち本発明は、以下の[発明1]-[発明17]に記載する発明を提供する。
[発明1]
式[1]:
で表される含フッ素アルキルクロロメチルケトンに、該ケトンを不斉還元する活性を有する微生物または該活性を有する酵素を作用させる工程を含む、式[2]:
で表される光学活性含フッ素アルキルクロロメチルアルコールの製造方法。
[発明2]
式[1]で表される含フッ素アルキルクロロメチルケトンにおけるRfが、トリフルオロメチル(CF3)基またはジフルオロメチル(CF2H)基である、発明1に記載の製造方法。
[発明3]
前記微生物が、クリプトコッカス・カルバタス(Cryptococcus curvatus)、ピキア・ファリノーサ(Pichia farinosa)、トルラスポーラ・デルブルエキィ (Torulaspora delbrueckii)、キャンディダ・カカオイ (Candida cacaoi)、ロドトルラ・ムシラギノサ (Rhodotorula mucilaginosa)、スポリディボラス・ジョンソニイ (Sporidibolus johnsonii)、及びトリコスポロン・キュタネウム (Trichosporon cutaneum) からなる群より選ばれる少なくとも1種である、発明1または2に記載の製造方法。
[発明4]
前記微生物が、下記に示す受託番号を有する微生物であることを特徴とする、発明3に記載の製造方法。
前記酵素がアルコール脱水素酵素またはカルボニル還元酵素であることを特徴とする、発明1に記載の製造方法。
[発明6]
アルコール脱水素酵素またはカルボニル還元酵素がシロキクラゲ科、サッカロミケス科、ロドトルラ属、スポリディボラス属、トリコスポロン科の微生物、該処理物、該培養液、及び/または、該微生物から得られる酵素であることを特徴とする発明5に記載の製造方法。
[発明7]
前記反応における温度(反応温度)が、5~60℃であることを特徴とする、発明1乃至6の何れかに記載の製造方法。
[発明8]
前記反応におけるpH(反応時におけるpH)が、4.0~8.0の範囲であることを特徴とする、発明1乃至7の何れかに記載の製造方法。
[発明9]
前記反応終了後に得られる光学活性含フッ素アルコールと、不純物とを含む混合液を蒸留することにより、該混合液から不純物を分離し、光学活性含フッ素アルコールを精製する工程を含む、発明1乃至8の何れかに記載の製造方法。
[発明10]
発明1乃至9の何れかの方法で式[2]で表される光学活性含フッ素アルキルクロロメチルアルコールを製造し、次いで、該アルコールに塩基を作用させることを特徴とする、式[3]:
で表される光学活性含フッ素アルキルエチレンオキシドの製造方法。
[発明11]
塩基が、アルカリ金属水素化物、アルカリ土類金属水素化物、アルカリ金属水酸化物、アルカリ土類金属水酸化物、アルカリ金属炭酸塩、アルカリ土類金属炭酸塩、アルカリ金属炭酸水素塩、及びアルカリ土類金属炭酸水素塩からなる群より選ばれる少なくとも一つである、発明10に記載の製造方法。
[発明12]
前記光学活性含フッ素アルキルエチレンオキシドを加水分解することにより、式[4]:
で表される含フッ素アルキル-1,2-エタンジオールに誘導する工程を更に含む、発明10または発明11に記載の製造方法。
[発明13]
加水分解が、酸または塩基を作用させることにより行う、発明12に記載の方法。
[発明14]
塩基が、アルカリ金属水素化物、アルカリ土類金属水素化物、アルカリ金属水酸化物、アルカリ土類金属水酸化物、アルカリ金属炭酸塩、アルカリ土類金属炭酸塩、アルカリ金属炭酸水素塩、及びアルカリ土類金属炭酸水素塩からなる群より選ばれる少なくとも一つである、発明13に記載の製造方法。
[発明15]
含フッ素アルキル-1,2-エタンジオールに誘導する工程を、前記反応で得られた光学活性含フッ素アルキルエチレンオキシドを単離することなく、そのまま加水分解することにより行う、発明12乃至14の何れかに記載の製造方法。
[発明16]
式:
で表される光学活性1-クロロ-3,3-ジフルオロイソプロピルアルコール。
[発明17]
式:
で表される光学活性2-ジフルオロメチルエチレンオキシド。
特に、本発明での対象の1つであるRfがジフルオロメチル基を有する基質については、通常の化学的手法による含フッ素アルキルクロロメチルケトンの不斉還元が極めて困難であり、従来の技術では高い光学純度の光学活性ジフルオロクロロメチルアルコールを得ることはできなかった(参考例1参照)。
工程1について説明する。式[1]で表される含フッ素アルキルクロロメチルケトンは公知の化合物であり、従来技術を基に当業者が適宜調製してもよいし、市販されているものを用いてもよい。
で表されるアルコール付加体も同様に用いることができる。従って、これらの水和体及びアルコール付加体も本願請求項1に包合するものとして扱う。
式[7]中のRは炭素数1~6の直鎖または分岐鎖のアルキル基を表す。具体的にはメチル基、エチル基、プロピル基、イソプロピル基、1-ブチル基、2-ブチル基、イソブチル基、tert-ブチル基、1-ペンチル基、2-ペンチル基、3-ペンチル基、2-メチル-1-ブチル基、2-メチル-2-ブチル基、3-メチル-1-ブチル基、3-メチル-2-ブチル基、ネオペンチル基、1-ヘキシル基、2-ヘキシル基、3-ヘキシル基、2-メチル-1-ペンチル基、3-メチル-1-ペンチル基、4-メチル-1-ペンチル基、2-メチル-2-ペンチル基、3-メチル-2-ペンチル基、4-メチル-2-ペンチル基、2-メチル-3-ペンチル基、3-メチル-3-ペンチル基、2,2-ジメチル-1-ブチル基、2,3-ジメチル-1-ブチル基、3,3-ジメチル-1-ブチル基、2,3-ジメチル-2-ブチル基、3,3-ジメチル-2-ブチル基、2-エチル-1-ブチル基、1-シクロプロピル基、1-シクロペンチル基、1-シクロヘキシル基が挙げられ、その中でもメチル基、エチル基、プロピル基、イソプロピル基、1-ブチル基、2-ブチル基、イソブチル基、tert-ブチル基、1-ペンチル基、1-ヘキシル基、1-シクロヘキシル基を表し、その中でもメチル基、エチル基、プロピル基、イソプロピル基、1-ブチル基、イソブチル基、tert-ブチル基、1-シクロヘキシル基が特に好ましい。
粗生成物を精製する方法としては、特に有機溶媒による抽出とそれに続く分別蒸留が好ましい。有機溶媒としては、エーテル系溶媒、エステル系溶媒、ハロゲン系溶媒、脂肪族炭化水素系溶媒、芳香族炭化水素系溶媒などが採用できる。具体的にはジエチルエーテル、ジイソプロピルエーテル、ジブチルエーテル、メチル-tert-ブチルエーテル、シクロペンチルメチルエーテル、テトラヒドロフラン、2-メチルテトラヒドロフラン、酢酸メチル、酢酸エチル、酢酸プロピル、酢酸t-ブチル、塩化メチレン、クロロホルム、1,2-ジクロロエタン、n-ヘキサン、シクロヘキサン、n-ヘプタン、n-ノナン、n-オクタン、トルエン、キシレン等が挙げられ、ジエチルエーテル、ジイソプロピルエーテル、メチル-tert-ブチルエーテル、テトラヒドロフラン、2-メチルテトラヒドロフラン、酢酸メチル、酢酸エチル、酢酸プロピル、塩化メチレン、クロロホルム、1,2-ジクロロエタン、n-ヘキサン、シクロヘキサン、n-ヘプタン、トルエンが好ましく、ジエチルエーテル、ジイソプロピルエーテル、メチル-tert-ブチルエーテル、2-メチルテトラヒドロフラン、酢酸エチル、塩化メチレン、クロロホルム、n-ヘキサン、トルエンが特に好ましい。これらの溶媒を単独若しくは組み合わせて使用しても良い。
また、反応終了液から菌体を取り除いた後の濾液を直接、上記で示した有機溶媒を用いることにより抽出し、それに対し濃縮を行うことにより光学活性含フッ素アルキルクロロメチルアルコールを回収することも出来る。
[工程2]
次に、工程2について説明する。工程2は、前記工程で製造した式[2]で表される光学活性含フッ素アルキルクロロメチルアルコールを原料とし、該アルコールに塩基を作用させることで、式[3]で表される光学活性含フッ素アルキルエチレンオキシドを得る工程である。ここで塩基を作用させ、閉環することにより、光学純度を低下させることなく、光学活性含フッ素アルキルエチレンオキシドに誘導することが可能である。
中でも、アルカリ金属水素化物、アルカリ金属水酸化物、アルカリ金属炭酸塩、アルカリ土類金属炭酸塩、アルカリ金属炭酸水素塩又はアルカリ土類金属炭酸水素塩が好ましく、アルカリ金属水素化物、アルカリ金属炭酸塩、アルカリ土類金属炭酸塩またはアルカリ金属炭酸水素塩が特に好ましい。
具体的には水素化リチウム、水素化ナトリウム、水素化カリウム、水素化ルビジウム、水素化セシウム、水素化マグネシウム、水素化カルシウム、水酸化リチウム、水酸化ナトリウム、水酸化カリウム、水酸化ルビジウム、水酸化セシウム、水酸化マグネシウム、水酸化カルシウム、炭酸リチウム、炭酸ナトリウム、炭酸カリウム、炭酸ルビジウム、炭酸セシウム、炭酸マグネシウム、炭酸カルシウム、炭酸水素リチウム、炭酸水素ナトリウム、炭酸水素カリウム、炭酸水素ルビジウム、炭酸水素セシウム、炭酸水素マグネシウム、炭酸水素カルシウム、ナトリウムアミド、カリウムアミド、ナトリウム、カリウムが挙げられ、中でも水素化リチウム、水素化ナトリウム、水素化カリウム、水酸化リチウム、水酸化ナトリウム、水酸化カリウム、水酸化ルビジウム、水酸化セシウム、炭酸ナトリウム、炭酸カリウム、炭酸ルビジウム、炭酸セシウム、炭酸カルシウム、炭酸カルシウム、炭酸水素ナトリウム、炭酸水素カリウム、炭酸水素ルビジウム、炭酸水素セシウム、炭酸水素マグネシウム、炭酸水素カルシウムが好ましく、水素化ナトリウム、水酸化カリウム、炭酸カリウム、炭酸セシウム、炭酸ナトリウム、炭酸カルシウム、炭酸水素カリウム、炭酸水素セシウムが特に好ましい。これらは、1種類を単独で、または2種類以上を組み合わせて使用することもできる。
[工程3]
次に、工程3について説明する。本発明では、工程1~工程2を経ることにより、目的化合物である光学活性含フッ素アルキルエチレンオキシドを得ることができるが、本工程では、該エチレンオキシドを加水分解することで開環し、光学活性化合物である下記式[4]:
で表される光学活性含フッ素アルキル-1,2-エタンジオールに簡便に誘導できる。
中でも、アルカリ金属水素化物、アルカリ金属水酸化物、アルカリ金属炭酸塩、アルカリ土類金属炭酸塩、アルカリ金属炭酸水素塩またはアルカリ土類金属炭酸水素塩が好ましく、アルカリ金属水素化物、アルカリ金属水酸化物、アルカリ金属炭酸塩、アルカリ土類金属炭酸塩またはアルカリ金属炭酸水素塩が特に好ましい。
具体的には水素化リチウム、水素化ナトリウム、水素化カリウム、水素化ルビジウム、水素化セシウム、水素化マグネシウム、水素化カルシウム、水酸化リチウム、水酸化ナトリウム、水酸化カリウム、水酸化ルビジウム、水酸化セシウム、水酸化マグネシウム、水酸化カルシウム、炭酸リチウム、炭酸ナトリウム、炭酸カリウム、炭酸ルビジウム、炭酸セシウム、炭酸マグネシウム、炭酸カルシウム、炭酸水素リチウム、炭酸水素ナトリウム、炭酸水素カリウム、炭酸水素ルビジウム、炭酸水素セシウム、炭酸水素マグネシウム、炭酸水素カルシウム、ナトリウムアミド、カリウムアミド、ナトリウム、カリウムが挙げられ、中でも水素化リチウム、水素化ナトリウム、水素化カリウム、水酸化リチウム、水酸化ナトリウム、水酸化カリウム、水酸化ルビジウム、水酸化セシウム、炭酸ナトリウム、炭酸カリウム、炭酸ルビジウム、炭酸セシウム、炭酸カルシウム、炭酸カルシウム、炭酸水素ナトリウム、炭酸水素カリウム、炭酸水素ルビジウム、炭酸水素セシウム、炭酸水素マグネシウム、炭酸水素カルシウムが好ましく、水素化ナトリウム、水酸化カリウム、水酸化カルシウム、炭酸カリウム、炭酸セシウム、炭酸ナトリウム、炭酸カルシウム、炭酸水素カリウム、炭酸水素セシウムが特に好ましい。
これらは、1種類を単独で、または2種類以上を組み合わせて使用することもできる。
有機塩基としては、ピリジン類、トリアルキルアミン類、N,N-ジアルキルアニリン類等が挙げられるが、中でもピリジン類、トリアルキルアミン類が好ましい。具体的には、ピリジン、メチルピリジン、エチルピリジン、ジメチルピリジン(ルチジン)、メチルエチルピリジン、ジエチルピリジン、トリメチルピリジン(コリジン)、ジメチルアミノピリジン、2,2'-ビピリジル、4-ジメチルアミノピリジン、トリメチルアミン、トリエチルアミン、トリプロピルアミン、及びトリブチルアミン、ジイソプロピルエチルアミン、N,N-ジメチルアニリン、またはN,N-ジエチルアニリン等が挙げられる。中でもピリジン、トリメチルアミン、トリエチルアミン、トリブチルアミンが好ましい。これらは、1種類を単独で、または2種類以上を組み合わせて使用することもできる。また、これらの有機塩基と無機塩基の2種類以上を組み合わせて使用することもできる。
酸は、無機酸として、塩酸、硫酸、リン酸、硝酸、ホウ酸等が挙げられる。有機酸として、酢酸、クエン酸、ギ酸、乳酸、シュウ酸、酒石酸、メタンスルホン酸等が挙げられる。中でも入手の容易さやコストの面、取り扱いやすさの点で、塩酸、硫酸が好ましく、これらは、1種類を単独で、または2種類以上を組み合わせて使用することもできる。
含フッ素アルキルクロロメチルアルコールから直接、光学活性含フッ素アルキル-1,2-エタンジオールを得るための最も好ましい形態としては、水存在下で工程2と工程3で共通する有機塩基や無機塩基の試剤を一度に使用することであり、特に無機塩基を使用することにより効率的に光学活性含フッ素アルキル-1,2-エタンジオールに誘導することが出来る。 後処理についても、工程3で記載した処理を同様に行うことにより高純度の光学活性含フッ素アルキル-1,2-エタンジオールを製造することが出来る。
[実施例]
次に実施例を示すが、本発明は以下の実施例によって限定されるものではない。
蒸留水1000ml、ポリペプトン10g、酵母エキス5g、塩化ナトリウム10gの組成からなる液体培地を調製し、試験管(φ1.6cm×15cm)に5mlずつ分注し、下記表3に示す各微生物を接種し、28℃、160spmで48~72時間の培養を行った。培養終了後、90wt%の3-クロロメ-1,1-ジフルオロ-2-プロパノン水和体を1.0%wt/v、グルコースを0.1mol/Lとなるように添加し、28℃、160rpmで還元反応を48時間行った。反応後の変換率の測定は、19F-NMRの内部標準法により行い(以下、すべての化合物で同じ)、1-クロロ-3,3-ジフルオロイソプロピルアルコールの光学純度の測定は、反応液に酢酸エチルを加えて混合し、該アルコールを有機層に抽出し、後述するキラルカラムを用いたガスクロマトグラフィー法により分析した(以下、同じ)。用いた微生物ごとの変換率及び光学純度の測定結果を下記表3に示した。
[光学活性1-クロロ-3,3-ジフルオロイソプロピルアルコールの光学純度の分析条件]
1-クロロ-3,3-ジフルオロイソプロピルアルコールに対して、無水酢酸1.2当量、ピリジン1.2当量を反応させ、アセトキシ体に誘導し、分析試料とした。ガスクロマトグラフィーのカラムにはアジレント・テクノロジー社製のCyclosil-B(0.25mm×30m×0.25μm)を用い、キャリアガスは窒素、圧力は163kPa、カラム温度は60~90℃(1℃/min)~150℃(10℃/min)、気化室・検出器(FID)温度は230℃の分析条件で得られるピークの面積により光学純度を算出した。それぞれのエナンチオマーの保持時間は、R体が15.7min、S体が16.4minであった。立体配置は、光学活性1-クロロ-3,3-ジフルオロイソプロピルアルコールに48%NaOHを作用させ光学活性2,2-ジフルオロエチレンオキシドに誘導した後に、20%H2SO4を作用させ、公知の化合物の光学活性3,3-ジフルオロ-1,2-プロパンジオールに誘導して決定した(後述するが、光学純度は維持される)。
[比較例1]
[3-ブロモ-1,1,1-トリフルオロ-2-プロパノン水和体に対する微生物の反応性調査(スクリーニング)]
実施例1と同様の方法で、微生物による3-ブロモ-1,1,1-トリフルオロ-2-プロパノン水和体の還元反応を実施し、表4に結果を記した。目的とする光学活性1-ブロモ-3,3,3-トリフルオロイソプロピルアルコールは生成しておらず、反応後の化合物を同定したところ、1,1,1-トリフルオロ-3-ヒドロキシ-2-プロパノン及び3,3,3-トリフルオロ-1,2-プロパンジオールであった。本化合物の臭素原子が水中で脱離することから、生体触媒による基質としては採用できないことが分かった。
なお、化学的に調製した光学活性体を用いた光学純度の測定方法を後述する。
1-ブロモ-3,3,3-トリフルオロイソプロピルアルコールに対して、無水トリフルオロ酢酸1.2当量、ピリジン1.2当量を反応させ、トリフルオロアセトキシ体に誘導し、分析試料とした。ガスクロマトグラフィーのカラムにはBGB Analytik AG社製のBGB-174(0.25mm×30m×0.25μm)を用い、キャリアガスは窒素、圧力は163kPa、カラム温度は60~90℃(1℃/min)~150℃(10℃/min)、気化室・検出器(FID)温度は230℃の分析条件で得られるピークの面積により光学純度を算出した。それぞれのエナンチオマーの保持時間は、R体が12.9min、S体が13.2minであった。
Pichia farinosa NBRC 0462菌株を、蒸留水1000ml、ポリペプトン10g、酵母エキス5g、塩化ナトリウム10gの組成からなる試験管(φ1.6cm×15cm)に調製された5mlの液体培地で前培養を行った。この培養液を、容量5Lの培養槽((株)丸菱バイオエンジ製、MDN型5L(S))に調製された蒸留水2500ml、グルコース25g、ペプトン12.5g、酵母エキス7.5g、麦芽エキス7.5g、リン酸二水素カリウム7.5g、リン酸水素二カリウム5.0gの組成からなる高圧蒸気滅菌後の液体培地に投入した。温度30℃、通気1.25L/min、攪拌翼回転数400 rpmで培養を行い、培養中のpHは42.5%リン酸と14%アンモニア水を用いてpH6.5に調整した。培養後の培養液を回収し、500ml容の遠沈管を用いて、遠心分離により菌体を回収した。回収した湿菌体に0.2MのpH7.0のリン酸緩衝液を100ml加え、懸濁液を調製した。ビーズ式細胞破砕装置(BioSpec社製、ビードビーター)を用いて、懸濁液中の細胞を破砕し、ガラスビースを除去後、20,000×g、30分間の遠心分離を行い、無細胞抽出液を調製した。この無細胞抽出液1mlに3-クロロ-1,1-ジフルオロ-2-プロパノン水和体を1%wt/v、2Mグルコースを250μL添加し、30℃で還元反応を24時間行った。反応後の変換率は100%、光学純度は62.0%ee(R)であった。
1mlの200mM リン酸カリウム緩衝液(pH6.5、206mM ギ酸ナトリウム、222mM グルコース、5mM NAD+、(NAD+:ニコチンアミドアデニンジヌクレオチド酸化型、以下同じ)5mM NADP+(NAD+:ニコチンアミドアデニンジヌクレオチドリン酸酸化型、以下同じ)に3-クロロ-1,1,1-トリフルオロ-2-プロパノン水和体または3-クロロ-1,1-ジフルオロ-2-プロパノン水和体を1重量%になるように添加し、下記表5と表6の「酵素名」に示す株式会社ダイセルのChiralscreen(登録商標) OH(アルコール脱水素酵素)を、それぞれ5mg加えてマグネチックスターラーで攪拌しながら25℃で2日間反応させた。1-クロロ-3,3,3-トリフルオロイソプロピルアルコールの光学純度は酢酸エチルで抽出し、後述するキラルカラムを用いたガスクロマトグラフィー法により測定した。それぞれ反応後の変換率と光学純度を測定し、下記表5と表6にそれぞれ示した。光学活性1-クロロ-3,3,3-トリフルオロイソプロピルアルコールの光学純度は、光学活性2-トリフルオロメチルエチレンオキシドに誘導し、後述の分析条件で分析した。
[光学活性1-クロロ-3,3,3-トリフルオロイソプロピルアルコールの光学純度の分析条件]
1-クロロ-3,3,3-トリフルオロイソプロピルアルコールに対して、無水トリフルオロ酢酸1.2当量、ピリジン1.2当量を反応させ、トリフルオロアセトキシ体に誘導し、分析試料とした。ガスクロマトグラフィーのカラムにはBGB Analytik AG社製のBGB-174(0.25mm×30m×0.25μm)を用い、キャリアガスは窒素、圧力は163kPa、カラム温度は60~90℃(1℃/min)~150℃(10℃/min)、気化室・検出器(FID)温度は230℃の分析条件で得られるピークの面積により光学純度を算出した。それぞれのエナンチオマーの保持時間は、R体が13.4min、S体が13.7minであった。
[比較例2]
実施例3と同様の方法で、下記表7と表8の「酵素名」に示す株式会社ダイセルのChiralscreen(登録商標) OH(アルコール脱水素酵素)の、3-クロロ-1,1,1-トリフルオロ-2-プロパノン水和体または3-クロロ-1,1-ジフルオロ-2-プロパノン水和体に対する反応性を評価し、下記表7と表8にそれぞれの結果を示した。
前培養の培地として、蒸留水1000ml、ポリペプトン10g、酵母エキス5g、塩化ナトリウム10gの組成からなる液体培地を調製し、試験管(φ1.6cm×15cm)に5mlずつ分注し、121℃で15分間の蒸気滅菌を行った。この液体培地に、株式会社ダイセルのChiralscreen (登録商標) OH E039のアルコール脱水素酵素を大量発現する遺伝子組換え大腸菌を白金時で無菌的に接種し、30℃、160spmで一晩培養を行い、波長600nmでの光学濃度(OD600)8.2の前培養液を得た。
実施例4で回収した(R)-1-クロロ-3,3-ジフルオロイソプロピルアルコール水溶液から該アルコールの含量が30g(230mmol)となるように水溶液を一部取り出し(166g)、氷冷しながら、48%水酸化ナトリウム水溶液1.0当量を滴下した。滴下は内部の温度を確認しながら、0~3℃を維持するように行った。滴下後、1℃で120分間攪拌し、閉環反応を実施した。反応後、蒸留により蒸気温度50~70℃(大気圧)で抜き出しを行い、(S)-2-ジフルオロメチルエチレンオキシドを17g(182mmol)回収し、後述の分析条件で光学純度を分析したところ83.1%eeであった。収率は79%となった。
[光学活性2-ジフルオロメチルエチレンオキシドの光学純度の分析条件]
2-ジフルオロメチルエチレンオキシドに対して、2-ナフタレンチオールを1.1当量、トリエチルアミンを1.1当量添加し、スルフィドに誘導し、分析試料とした。高速液体クロマトグラフィーのカラムにはダイセル社製のCHIRALCEL OD-H(4.6mm×25cm、粒子径5μm)を用い、移動相はヘキサン/IPA=95/5、流速0.7ml、カラム温度15℃、検出波長230nmで得られるピークの面積により光学純度を算出した。それぞれのエナンチオマーの保持時間は、R体が24.2min、S体が27.4minであった。
実施例5で得た(S)-2-ジフルオロメチルエチレンオキシド17g(182mmol)に20%硫酸水溶液を0.2当量添加し、50℃で8時間攪拌を行った。反応後は、水酸化ナトリウムで溶液のpHを5に調整を行い、ろ過により無機塩を取り除いた後に、減圧蒸留(内圧1.5kPa、蒸気温度80~81℃)で抜き出しを行い、得られたフラクションの水分を測定したところ、4.2%であった。ここにトルエン20mlを加えて、ディーンスターク装置を用いて還流脱水を5時間行った。釜残は生成物とトルエンが二層分離しているため、トルエンを分離させることにより、17g(152mmol)の(S)-3,3-ジフルオロ-1,2-プロパンジオールを得た。また、後述の分析条件で光学純度を分析したところ83.1%eeであった。水分値は0.3%であり、収率は84%となった。
[光学活性3,3-ジフルオロ-1,2-プロパンジオールの光学純度の分析条件]
3,3-ジフルオロ-1,2-プロパンジオールに対して、無水酢酸2.5当量、ピリジン2.5当量を反応させ、ジアセトキシ体に誘導し、分析試料とした。ガスクロマトグラフィーのカラムにはアジレント・テクノロジー社製のCyclosil-B(0.25mm×30m×0.25μm)を用い、キャリアガスは窒素、圧力は163kPa、カラム温度は50℃(5min)、50~150℃(5℃/min)、150℃(15min)、気化室・検出器(FID)温度は230℃の分析条件で得られるピークの面積により光学純度を算出した。それぞれのエナンチオマーの保持時間は、R体が16.3min、S体が17.2minであった。立体配置は公知の情報を元に決定した。
実施例4で調製した(R)-1-クロロ-3,3-ジフルオロイソプロピルアルコールが含まれる水溶液から該アルコールの含量が25g(192mmol)となるように水溶液を一部取り出し(139g)、氷冷しながら、48%水酸化ナトリウム水溶液1.0当量を滴下した。滴下は内部の温度を確認しながら、0~3℃を維持するように行った。滴下後、1℃で120分間攪拌し、その後、30mLの2-メチルテトラヒドロフランで3回抽出を行うことで、(S)-2-ジフルオロメチルエチレンオキシドを14g含む2-メチルテトラヒドロフラン溶液を得た。この溶液に20%硫酸水溶液を0.2当量添加し、60℃で7時間攪拌を行った。
反応後は、水酸化ナトリウムで溶液のpHを5に調整を行い、ろ過により無機塩を取り除いた後に、減圧蒸留(内圧1.5kPa、蒸気温度80~81℃)を行うことにより、14g(125mmol)の(S)-3,3-ジフルオロ-1,2-プロパンジオールを得た。また、前述の分析条件で光学純度を分析したところ83.2%eeであった。収率は65%となった。
実施例4で調製した13g(100mmol)の(R)-1-クロロ-3,3-ジフルオロイソプロピルアルコールが含まれる水溶液(72g)を氷冷しながら、48%水酸化ナトリウム水溶液1.5当量を滴下した。滴下は内部の温度を確認しながら、0~3℃を維持するように行った。滴下後、1℃で12時間攪拌することにより、生成物の(S)-2-ジフルオロメチルエチレンオキシドと(S)-3,3-ジフルオロ-1,2-プロパンジオールの比率は21:79となった。反応後は、生成物をメチルtert-ブチルエーテルで抽出を行い、減圧蒸留することにより4g(36mmol)の(S)-3,3-ジフルオロ-1,2-プロパンジオールを得た。収率は36%となった。
また、前述の分析条件で光学純度を分析したところ83.0%eeであった。
前述のスクリーニング条件で3-クロロ-1,1,1-トリフルオロ-2-プロパノン水和体にTrichosporon cutaneum NBRC 1198菌株を作用させ、61.0%eeの(R)-1-クロロ-3,3,3-トリフルオロイソプロピルアルコールを与えることを確認した。
[キラルカラムを用いた高速液体クロマトグラフィー法による光学活性2-トリフルオロメチルエチレンオキシドの光学純度の分析条件]
2-トリフルオロメチルエチレンオキシドに対して、2-ナフタレンチオールを1.1当量、トリエチルアミンを1.1当量添加し、スルフィドに誘導し、分析試料とした。高速液体クロマトグラフィーのカラムにはダイセル社製のCHIRALCEL OD-H(4.6mm×25cm、粒子径5μm)を用い、移動相はヘキサン/IPA = 95/5、流速0.7ml、カラム温度15℃、検出波長230nmで得られるピークの面積により光学純度を算出した。それぞれのエナンチオマーの保持時間は、R体が16.1min、S体が18.2minであった。
実施例9で調製した(S)-2-トリフルオロメチルエチレンオキシド溶液から該エチレンオキシドの含量が10g(89mmol)となるように溶液を一部取り出し、20%硫酸水溶液を0.2当量添加し、(S)-3,3,3-トリフルオロ-1,2-プロパンジオールに誘導した。生成した(S)-3,3,3-トリフルオロ-1,2-プロパンジオールを後述の分析条件で光学純度を分析したところ61.0%eeであった。
[光学活性3,3,3-トリフルオロ-1,2-プロパンジオールの光学純度の分析条件]
3,3,3-トリフルオロ-1,2-プロパンジオールに対して、無水酢酸2.5当量、ピリジン2.5当量を反応させ、ジアセトキシ体に誘導し、分析試料とした。ガスクロマトグラフィーのカラムにはアジレント・テクノロジー社製のCyclosil-B(0.25mm×30m×0.25μm)を用い、キャリアガスは窒素、圧力は163kPa、カラム温度は50℃(5min)、50~150℃(5℃/min)、150℃(15min)、気化室・検出器(FID)温度は230℃の分析条件で得られるピークの面積により光学純度を算出した。それぞれのエナンチオマーの保持時間は、R体が11.3min、S体が12.2minであった。
前培養の培地として、蒸留水1000ml、ポリペプトン10g、酵母エキス5g、塩化ナトリウム10gの組成からなる液体培地を調製し、試験管(φ1.6cm×15cm)に5mlずつ分注し、121℃で15分間の蒸気滅菌を行った。この液体培地に、株式会社ダイセルのChiralscreen (登録商標) OH E094のアルコール脱水素酵素を大量発現する遺伝子組換え大腸菌を白金時で無菌的に接種し、30℃、160spmで一晩培養を行い、波長600nmでの光学濃度(OD600)6.4の前培養液を得た。
実施例11で回収した85gの(S)-1-クロロ-3,3-ジフルオロイソプロピルアルコール水溶液(含量として14g、105mmol)を氷冷しながら、48%水酸化ナトリウム水溶液1.0当量を滴下した。滴下は内部の温度を確認しながら、0~3℃を維持するように行った。滴下後、1℃で120分間攪拌し、閉環反応を実施した。反応後、蒸留により蒸気温度50~70℃(大気圧)で、生成した(R)-2-ジフルオロメチルエチレンオキシドを49g回収した。19F-NMRの内部標準法により生成物の含量は8g(85mmol)であり、収率は81%となった。前述の分析条件で光学純度を分析したところ89.1%eeであった。
実施例12で調製した49gの(R)-2-ジフルオロメチルエチレンオキシド水溶液(含量として8g、85mmol)に20%硫酸水溶液を0.2当量添加し、60℃で7時間攪拌を行った。反応後は、水酸化ナトリウムで溶液のpHを5に調整を行い、ろ過により無機塩を取り除いた後に、減圧蒸留(内圧1.5kPa、蒸気温度80~81℃)を行うことにより、46gの(R)-3,3-ジフルオロ-1,2-プロパンジオール溶液を回収し、19F-NMRの内部標準法により生成物の含量は7g(66mmol)であり、収率は78%となった。また、前述の分析条件で光学純度を分析したところ89.2%eeであった。
前培養の培地として、蒸留水1000ml、ポリペプトン10g、酵母エキス5g、塩化ナトリウム10gの組成からなる液体培地を調製し、試験管(φ1.6cm×15cm)に5mlずつ分注し、121℃で15分間の蒸気滅菌を行った。この液体培地に、株式会社ダイセルのChiralscreen (登録商標) OH E094のアルコール脱水素酵素を大量発現する遺伝子組換え大腸菌を白金時で無菌的に接種し、30℃、160spmで一晩培養を行い、波長600nmでの光学濃度(OD600)7.2の前培養液を得た。
本培養の培地として、蒸留水2500mlに酵母エキス、グルタミン酸ナトリウム、グルコース、ラクトース、無機塩類、消泡剤からなる液体培地を調製し、容量5Lの培養槽((株)丸菱バイオエンジ製、MDN型5L(S))に張り込み、121℃で30分間の蒸気滅菌を行った。この培養槽に前培養液を無菌的に5ml接種し、30℃、通気0.5vvm、攪拌しながら40時間培養し、光学濃度(OD600)23の懸濁液を調製した。培養時のpHは20%炭酸ナトリウム水溶液、42.5%リン酸水溶液を用いてpH7.0付近に調整した。培養終了後、通気を0vvmに変更し、培養液に対して93%wt/wtの3-クロロ-1,1-ジフルオロ-2-プロパノン水和体を6.25%wt/v(151.2g、含量として140.6g、960mmol)添加し、グルコース脱水素酵素により補酵素の再生を行いながら30℃、pH6.0で還元反応を24時間行った。反応後の変換率99%光学純度は90.7%ee(S)であった。
反応後の培養液に対して塩化カルシウム二水和物(36g)を加えてから減圧蒸留(内圧19.2kPa、蒸気温度57~61℃)により(S)-1-クロロ-3,3-ジフルオロイソプロピルアルコールを含む水溶液を467g回収した。回収した水溶液にメチルtert-ブチルエーテル450mlを加えて撹拌することにより抽出を行った。二層分離を行い、水層に再びメチルtert-ブチルエーテル450mlを加えて抽出し、合わせた有機層の濃縮を行いメチルtert-ブチルエーテルを留去した(内圧23kPa)。残渣は、(S)-1-クロロ-3,3-ジフルオロイソプロピルアルコール(74g、563mmol、90.6%ee)を含む、73.5wt%メチルtert-ブチルエーテル溶液100gとなり、収率は59%であった。
実施例14で得た9.0gの(S)-1-クロロ-3,3-ジフルオロイソプロピルアルコールの73.5wt%メチルtert-ブチルエーテル溶液(含量として6.6g、0.050mmol)を、炭酸カリウム(8.3g、0.060mmol)とジグリム(25ml)の溶液に室温で滴下した。滴下後、内温を40℃に保ち21時間攪拌した。反応後は吸引ろ過により無機塩の除去を行い、濾液を減圧蒸留(内圧43kPa、蒸気温度47℃)により(R)-2-ジフルオロメチルエチレンオキシドが7.1g(51.4wt%、0.039mol)、収率78%で得られた。前述の分析条件で光学純度を分析したところ90.6%eeであった。
実施例14で得た17.7gの(S)-1-クロロ-3,3-ジフルオロイソプロピルアルコールの73.5wt%メチルtert-ブチルエーテル溶液(含量として13.0g、0.10mmol)を、48wt%の炭酸カリウム水溶液(37.5g、0.13mmol)に室温で滴下した。そのまま60℃のバス中で5時間反応を行うことにより変換率は99%となった。反応後は氷冷下で冷却を行ったのちに吸引ろ過を行い、無機塩の除去を行った。濾液をTHF20mlで抽出を行い、分離した水層はさらにTHF20mlで抽出した。合計で3回抽出を行い、合わせた有機層を減圧蒸留(内圧3.0kPa、蒸気温度87℃)により(R)-3,3-ジフルオロ-1,2-プロパンジオールが9.9g、0.088mol、収率88%で得られた。純度をガスクロマトグラフィーで測定すると、99.3%であった。前述の分析条件で光学純度を分析したところ90.6%eeであった。
[参考例1]
[化学触媒を用いた3-クロロ-1,1-ジフルオロ-2-プロパノン水和体の還元反応]
アルゴンガス雰囲気下、20mLのオートクレーブにルテニウム錯体(0.008mmol、基質/触媒比 700)、ギ酸カリウム(0.967g、11.5mmol)、臭化テトラブチルアンモニウム(TBAB)(0.181g、0.56mmol)、水(0.56mL)、ギ酸(0.63mL、16.7mmol、使用ケトンに対し0.3当量)及び3-クロロ-1,1-ジフルオロ-2-プロパノン水和体(5.6mmol)を仕込んだ。容器を密閉して30℃で21時間攪拌した。用いたルテニウム錯体ごとの変換率及び光学純度の測定結果を下記の表9に示した。
このように、化学触媒を用いた不斉還元反応では、1-クロロ-3,3-ジフルオロイソプロピルアルコールの光学純度は低い結果となった。
Claims (17)
- 式[1]で表される含フッ素アルキルクロロメチルケトンにおけるRfが、トリフルオロメチル(CF3)基またはジフルオロメチル(CF2H)基である、請求項1に記載の製造方法。
- 前記微生物が、クリプトコッカス・カルバタス(Cryptococcus curvatus)、ピキア・ファリノーサ(Pichia farinosa)、トルラスポーラ・デルブルエキィ (Torulaspora delbrueckii)、キャンディダ・カカオイ (Candida cacaoi)、ロドトルラ・ムシラギノサ (Rhodotorula mucilaginosa)、スポリディボラス・ジョンソニイ (Sporidibolus johnsonii)、及びトリコスポロン・キュタネウム (Trichosporon cutaneum) からなる群より選ばれる少なくとも1種である、請求項1または2に記載の製造方法。
- 前記酵素がアルコール脱水素酵素またはカルボニル還元酵素であることを特徴とする、請求項1または2に記載の製造方法。
- アルコール脱水素酵素またはカルボニル還元酵素がシロキクラゲ科、サッカロミケス科、ロドトルラ属、スポリディボラス属、トリコスポロン科の微生物、該処理物、該培養液、及び/または、該微生物から得られる酵素であることを特徴とする、請求項5に記載の製造方法。
- 前記反応における温度(反応温度)が、5~60℃であることを特徴とする、請求項1乃至6の何れかに記載の製造方法。
- 前記反応におけるpH(反応時におけるpH)が、4.0~8.0の範囲であることを特徴とする、請求項1乃至7の何れかに記載の製造方法。
- 前記反応終了後に得られる光学活性含フッ素アルコールと、不純物とを含む混合液を蒸留することにより、該混合液から不純物を分離し、光学活性含フッ素アルコールを精製する工程を含む、請求項1乃至8の何れかに記載の製造方法。
- 塩基がアルカリ金属水素化物、アルカリ土類金属水素化物、アルカリ金属水酸化物、アルカリ土類金属水酸化物、アルカリ金属炭酸塩、アルカリ土類金属炭酸塩、アルカリ金属炭酸水素塩、及びアルカリ土類金属炭酸水素塩からなる群より選ばれる少なくとも一つである、請求項10に記載の製造方法。
- 加水分解が、酸または塩基を作用させることにより行う、請求項12に記載の方法。
- 含フッ素アルキル-1,2-エタンジオールに誘導する工程において、用いる塩基がアルカリ金属水素化物、アルカリ土類金属水素化物、アルカリ金属水酸化物、アルカリ土類金属水酸化物、アルカリ金属炭酸塩、アルカリ土類金属炭酸塩、アルカリ金属炭酸水素塩、及びアルカリ土類金属炭酸水素塩からなる群より選ばれる少なくとも一つの塩基性化合物の存在下で行う、請求項13に記載の製造方法。
- 含フッ素アルキル-1,2-エタンジオールに誘導する工程を、前記反応で得られた光学活性含フッ素アルキルエチレンオキシドを単離することなく、そのまま加水分解することにより行う、請求項12乃至14の何れかに記載の製造方法。
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US15/739,498 US10336718B2 (en) | 2015-06-25 | 2016-06-24 | Method for industrial production of optically active fluoroalkyl ethylene oxide |
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JP2020517717A (ja) * | 2017-04-27 | 2020-06-18 | メキシケム フロー エセ・ア・デ・セ・ヴェ | 方法 |
JP2021045108A (ja) * | 2019-09-20 | 2021-03-25 | 公立大学法人 富山県立大学 | 光学活性フルオロアルコールおよび光学活性クロロフルオロアルコールの製造方法 |
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CN108441433B (zh) * | 2018-03-31 | 2021-08-20 | 湖南科技大学 | 胶红酵母nq1及在制备手性醇中的应用 |
CN111073919B (zh) * | 2019-12-11 | 2024-06-07 | 尚科生物医药(上海)有限公司 | 一种制备(s)-2-(3,4-二氟苯基)环氧乙烷的方法 |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2700686A (en) * | 1951-02-15 | 1955-01-25 | Eastman Kodak Co | Hydroxy substituted polyfluorinated compounds |
US2746952A (en) * | 1951-06-30 | 1956-05-22 | Eastman Kodak Co | 2, 4-bis (methylsulfonyl)-benzeneazotetrahydro-quinoline compounds |
JPH10279571A (ja) * | 1997-03-21 | 1998-10-20 | Bayer Ag | トリフルオロメチルオキシランの製造のための改良法 |
WO2006058457A1 (fr) * | 2004-11-30 | 2006-06-08 | Lianyungang Hengbang Pharmaceutical Co. Ltd. | DÉRIVÉS DE 2-MÉTHYL-5-NITROIMIDAZOL-1-ÉTHANOL α-SUBSTITUÉS |
WO2007142210A1 (ja) * | 2006-06-05 | 2007-12-13 | Daicel Chemical Industries, Ltd. | 光学活性アルコールの製造方法 |
JP2009514542A (ja) * | 2005-11-11 | 2009-04-09 | エボニック デグサ ゲーエムベーハー | 主に1種のエナンチオマーを含む1,1,1−トリフルオロイソプロパノールの製造方法 |
WO2011099595A1 (ja) * | 2010-02-15 | 2011-08-18 | 富山県 | (s)-1,1,1-トリフルオロ-2-プロパノールの工業的な製造方法 |
JP2012005396A (ja) * | 2010-06-23 | 2012-01-12 | Toyama Prefecture | (r)−1,1,1−トリフルオロ−2−プロパノールの工業的な製造方法 |
WO2015005341A1 (ja) * | 2013-07-10 | 2015-01-15 | セントラル硝子株式会社 | 光学活性フルオロ乳酸誘導体の製造方法 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06247953A (ja) | 1993-02-22 | 1994-09-06 | Japan Energy Corp | 光学活性な3,3,3−トリフルオロプロペンオキシドの製造方法 |
JP4867201B2 (ja) | 2005-05-27 | 2012-02-01 | セントラル硝子株式会社 | 光学活性1,1,1−トリフルオロ−2,3−エポキシプロパンの製造方法 |
-
2016
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- 2016-06-24 WO PCT/JP2016/068747 patent/WO2016208699A1/ja active Application Filing
- 2016-06-24 US US15/739,498 patent/US10336718B2/en active Active
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2700686A (en) * | 1951-02-15 | 1955-01-25 | Eastman Kodak Co | Hydroxy substituted polyfluorinated compounds |
US2746952A (en) * | 1951-06-30 | 1956-05-22 | Eastman Kodak Co | 2, 4-bis (methylsulfonyl)-benzeneazotetrahydro-quinoline compounds |
JPH10279571A (ja) * | 1997-03-21 | 1998-10-20 | Bayer Ag | トリフルオロメチルオキシランの製造のための改良法 |
WO2006058457A1 (fr) * | 2004-11-30 | 2006-06-08 | Lianyungang Hengbang Pharmaceutical Co. Ltd. | DÉRIVÉS DE 2-MÉTHYL-5-NITROIMIDAZOL-1-ÉTHANOL α-SUBSTITUÉS |
JP2009514542A (ja) * | 2005-11-11 | 2009-04-09 | エボニック デグサ ゲーエムベーハー | 主に1種のエナンチオマーを含む1,1,1−トリフルオロイソプロパノールの製造方法 |
WO2007142210A1 (ja) * | 2006-06-05 | 2007-12-13 | Daicel Chemical Industries, Ltd. | 光学活性アルコールの製造方法 |
WO2011099595A1 (ja) * | 2010-02-15 | 2011-08-18 | 富山県 | (s)-1,1,1-トリフルオロ-2-プロパノールの工業的な製造方法 |
JP2012005396A (ja) * | 2010-06-23 | 2012-01-12 | Toyama Prefecture | (r)−1,1,1−トリフルオロ−2−プロパノールの工業的な製造方法 |
WO2015005341A1 (ja) * | 2013-07-10 | 2015-01-15 | セントラル硝子株式会社 | 光学活性フルオロ乳酸誘導体の製造方法 |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2020517717A (ja) * | 2017-04-27 | 2020-06-18 | メキシケム フロー エセ・ア・デ・セ・ヴェ | 方法 |
JP2021045108A (ja) * | 2019-09-20 | 2021-03-25 | 公立大学法人 富山県立大学 | 光学活性フルオロアルコールおよび光学活性クロロフルオロアルコールの製造方法 |
JP7344509B2 (ja) | 2019-09-20 | 2023-09-14 | 公立大学法人 富山県立大学 | 光学活性フルオロアルコールおよび光学活性クロロフルオロアルコールの製造方法 |
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CN107709566B (zh) | 2021-06-08 |
JP6823266B2 (ja) | 2021-02-03 |
US10336718B2 (en) | 2019-07-02 |
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