WO2001017944A1 - Procede relatif a l'elaboration d'aminoalcool optiquement actif - Google Patents
Procede relatif a l'elaboration d'aminoalcool optiquement actif Download PDFInfo
- Publication number
- WO2001017944A1 WO2001017944A1 PCT/JP2000/006092 JP0006092W WO0117944A1 WO 2001017944 A1 WO2001017944 A1 WO 2001017944A1 JP 0006092 W JP0006092 W JP 0006092W WO 0117944 A1 WO0117944 A1 WO 0117944A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- optically active
- amino
- group
- salt
- resolving agent
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C215/00—Compounds containing amino and hydroxy groups bound to the same carbon skeleton
- C07C215/02—Compounds containing amino and hydroxy groups bound to the same carbon skeleton having hydroxy groups and amino groups bound to acyclic carbon atoms of the same carbon skeleton
- C07C215/04—Compounds containing amino and hydroxy groups bound to the same carbon skeleton having hydroxy groups and amino groups bound to acyclic carbon atoms of the same carbon skeleton the carbon skeleton being saturated
- C07C215/06—Compounds containing amino and hydroxy groups bound to the same carbon skeleton having hydroxy groups and amino groups bound to acyclic carbon atoms of the same carbon skeleton the carbon skeleton being saturated and acyclic
- C07C215/08—Compounds containing amino and hydroxy groups bound to the same carbon skeleton having hydroxy groups and amino groups bound to acyclic carbon atoms of the same carbon skeleton the carbon skeleton being saturated and acyclic with only one hydroxy group and one amino group bound to the carbon skeleton
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C213/00—Preparation of compounds containing amino and hydroxy, amino and etherified hydroxy or amino and esterified hydroxy groups bound to the same carbon skeleton
- C07C213/10—Separation; Purification; Stabilisation; Use of additives
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/41—Preparation of salts of carboxylic acids
- C07C51/412—Preparation of salts of carboxylic acids by conversion of the acids, their salts, esters or anhydrides with the same carboxylic acid part
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07B—GENERAL METHODS OF ORGANIC CHEMISTRY; APPARATUS THEREFOR
- C07B2200/00—Indexing scheme relating to specific properties of organic compounds
- C07B2200/07—Optical isomers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- 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 a method for producing optically active 4-amino-2-methylbutane-1-1-ol which is useful as an intermediate for the synthesis of optically-active medicaments and agricultural chemicals.
- the present invention relates to a method for use as an optically active pharmaceutical / agrochemical synthesis intermediate, and a method for producing an optically active medical / agrochemical using the optically active 4-amino-12-methylbutan-1-ol obtained by the above production method.
- the former method has a problem that the yield is low.
- the safety of nitromethane used as a raw material and the yield of the addition reaction are low, and the industrial production method has a problem. It is hard to be established.
- racemic 4-amino-12-methylbutane-l-ol for example, a method described in JP-A No. 8-291157 is used to prepare 3-cyano isotolone from hydrocyanic acid and methyl methacrylate. After methyl is obtained, it can be obtained by reduction with an alkali metal hydride in a suitable solvent.However, there is no report on the optical resolution of racemic 4-amino-2-methylbutane-111-ol as in the present invention. .
- Optically active organic acid Optically active optical resolving agent
- low molecular aminoalcono salts of optically active mandelic acid with optically active 2-amino-1-butanol (US 42608 15A, US 425952 1A, EP 5 18 B 1)
- a salt with benzylamino-1-butanol US Pat. No. 4,239,992A is known, but these amino alcohols are only related to
- An object of the present invention is to provide an industrially advantageous method for producing optically active 4-amino-12-methylbutan-l-l-ol which is useful as an intermediate for the synthesis of optically active medicinal and agricultural chemicals.
- Another object of the present invention is to provide an optically active 4-amino-2-methylbutane-1-1ol from a diastereomer salt of an optically active 4-amino-2-methylbutan-1-1ol and an optically active optical resolving agent. And a method for industrially advantageously recovering an optically active optical resolving agent from a diastereomer salt of optically active 4-amino-2-methylbutane-1-1-ol and an optically active optical resolving agent. To provide.
- the present inventors have conducted intensive studies in order to achieve the above object, and as a result, an optically active organic acid was caused to act on racemic 4-amino-2-methylbutan-111-ol, preferably in the presence of a solvent. By separating the diastereomer salt from the mother liquor, it was found that optically active 4-amino-2-methylbutan-1-ol could be obtained, and the present invention was completed.
- the present inventors have conducted intensive studies in order to achieve the above object, and as a result, have found that a diastereomer monosalt of optically active 4-amino-2-methylbutan-111-ol and an optically active optical resolving agent can be dissolved in a solvent and Contact with alkali to demineralize and separate into solid and liquid. Optically active 4-amino-2-methylbutan-1-ol can be obtained with high purity and high yield from the filtrate.
- the present inventors have found that a filter containing an alkali salt of a resolving agent is brought into contact with a solvent and an acid, and that the crystallized optical resolving agent can be recovered by solid-liquid separation, thereby completing the present invention.
- the present inventors have prepared a salt of an optically active 4-amino-2-methylbutane-111-ol with an optically active optical resolving agent in a solvent such as alcohol, water and the like, and an alkali metal hydroxide, an alkali metal hydroxide. Desolate by contacting with an alkali such as, etc., and replacing the solvent such as alcohol and water with an alcohol having low solubility of the optically active optical resolving agent alkali metal salt (alkali metal salt). (Alkali metal salt) and optically active 4-amino-2-methylbutan-l-ol solution are separated by solid-liquid separation to recover the optically active alkali resolving agent alkali metal salt (alkali metal salt). —The inventors have found that it is possible to obtain methylbutane-111-ol, and have completed the present invention.
- the present invention provides an optically active compound comprising reacting a racemic form of 4-amino-2-methylbutan-111-ol with an optically active organic acid to crystallize the resulting diastereomer salt and separating it into a solid and a liquid. This is a method for producing amino-2-methylbutan-1-ol.
- the present invention relates to a salt of optically active 4-amino-2-methylbutan-111-ol and an optically active organic acid.
- the present invention relates to a method for producing the salt and a method for producing optically active 4-amino-12-methylbutan-111-ol using the salt.
- the present invention relates to a filtrate obtained by contacting a diastereomer salt of an optically active 4-amino-2-methylbutan-111-ol with an optically active optical resolving agent with a solvent and an alkali to salt-separate, and then performing solid-liquid separation. More specifically, the present invention relates to a method for producing optically active 4-amino-2-methylbutane-l-ol, which obtains optically active 4-amino-2-methylbutan-l-l-ol.
- the present invention relates to a method wherein a filter containing an alkali salt of an optically active optical resolving agent obtained by solid-liquid separation by the above method is brought into contact with a solvent and an acid, and the crystallized optically active optical resolving agent is solid-liquid separated.
- the present invention relates to a method for producing optically active 4-amino-2-methylbutane-1-ol which is separated and recovered.
- the present invention relates to a method for preparing a diastereomer salt of an optically active 4-amino-2-methylbutane-1-1-ol and an optically active optical resolving agent by contacting the diastereomer salt with a solvent and an alkaline solvent to form a salt.
- a solvent and an alkaline solvent With alcohol with low solubility of alkaline agent
- the optically active optically resolving agent alkali salt and the optically active optically resolving agent are recovered by solid-liquid separation of the optically active optically resolving agent alkali salt and the optically active optically resolving agent alkaline salt. 2—Related to a method for producing methyl-1-butanol.
- the present invention relates to a method for preparing a diastereomer salt of an optically active 4-amino-2-methylbutane-1-1-ol and an optically active optical resolving agent by contacting the diastereomer salt with an alcohol or an alkali metal alcoholate, and salt-solving the alcohol.
- the present invention relates to a method for producing optically active 4-amino-2-methylbutan-1-ol, which recovers a metal salt of a resolving agent.
- the present invention provides a method for desolving a diastereomer salt of an optically active 4-amino-2-methylbutan-1-ol with an optically active optical resolving agent by contacting water and Z or an alcohol with an alkali metal hydroxide.
- the water, Z or alcohol is replaced with an alcohol having a low solubility in the optically active optical resolving agent, and the optically active optical resolving agent is replaced with an optically active metal salt.
- the present invention relates to a method for producing optically active 4-amino-2-methylbutan-1-ol, which comprises solid-liquid separation of a solution of methylbutane-11 to recover an optically active metal salt of an optically resolving agent.
- the present invention provides a method for recovering an optically active optical resolving agent used in the production of optically active 4-amino-2-methylbutane-111-ol, and an optically active optical resolving agent recovered by the recovery method. To produce optically active 4-amino-2-methylbutane-1-ol.
- the present invention provides a method of using the optically active 4-amino-2-methylbutane-l-l-ol obtained by the above-mentioned production method as an intermediate for the synthesis of an optically-active medicinal and agrochemical, and the optically-active l-l-oxyl obtained by the above production method
- the present invention relates to a method for producing an optically active medicinal and agricultural chemical using amino-2-methylbutane-1-ol.
- FIG. 1 shows the 1 H—NMR spectrum of the (R) -2-chloromandelic acid ′ (R) —4-amino-2-methylbutane-111-ol salt of the present invention.
- Figure 2 shows the (R) -2-chloromandelic acid '(R) -4-amino-2- Represents the 13 C—NMR spectrum of the methyl butane- 1- ol salt.
- FIG. 3 shows the IR spectrum of the (R) -2-chloromandelic acid '(R) -4-amino-2-methylbutane-l-l monol salt of the present invention.
- the 4-1 amino-2-methylbutane-1-ol which is the target of optical resolution has a primary hydroxyl group and an amino group in the molecule, and the methyl group is not bonded.
- the asymmetric carbon has a structure corresponding to the position of ⁇ with the carbon to which the amino group is bonded. Even in amino alcohols having such a structure, optically active organic acids (optically active optical resolving agents) are used. To form a diastereomer complex, and crystallize to obtain a salt.
- This salt is brought into contact with a solvent and an alkali, separated into a solid and a liquid, and the optically active 4-amino-2-methylbutane-11-ol is separated from the filtrate.
- the present invention has been achieved by obtaining new knowledge that it can be obtained. Furthermore, new knowledge was obtained that the alkali salt of the optically active optical resolving agent of the filter obtained by solid-liquid separation can be brought into contact with a solvent and an acid to separate the solid and liquid to recover the yield of the optical resolving agent. As a result, the present invention has been achieved.
- the present invention relates to a method for preparing a salt of an optically active 4-amino-2-methylbutane-1-1ol and an optically active optical resolving agent with a solvent such as alcohol or water and an alkali metal alcoholate or an alkali metal hydroxide.
- a solvent such as alcohol or water and an alkali metal alcoholate or an alkali metal hydroxide.
- the salt is dissolved by contacting with an alkali, and the solvent such as alcohol or water is replaced with an alcohol having a low solubility of the optically active optical resolving agent alkali metal salt (alkali metal salt).
- An optically active organic acid can be recovered by solid-liquid separation of an alkali metal salt) and an optically active 4-amino-2-methylbutan-1-ol solution to obtain optically active 4-amino-2-methylbutan-1-ol in high yield.
- various optical resolving agents derived from natural products or synthetic products can be used, and both R-form and S-form can be used.
- Preferred examples include an optically active carboxylic acid, an optically active sulfonic acid, and an optically active phosphonic acid represented by the general formula (1).
- D represents COO—, SO 3— or P03 H—.
- A, B, and C each represent hydrogen, a substituted or unsubstituted linear or branched alkyl group having 1 to 10 carbon atoms, and halogen.
- the group is a linear or branched alkyl group having 1 to 10 carbon atoms, a halogen atom, an alkoxy group, a hydroxyl group, a nitro group, a benzoyl group, a carboxyl group, an acyl group, a methylthio group or a sulfonic acid group.
- A, B, C, (CH 2 ) n -DH may not be the same, where n is 1 or 0.)
- optically active carboxylic acid optically active sulfonic acid or optically active phosphonic acid represented by the general formula (1), as a linear or branched alkyl group having 1 to 10 carbon atoms represented by A, B and C, Is, for example, methyl, ethyl, n-propyl, isopropyl, n-butynole, sec-butyl, tert-butyl, isobutynole, pentyl, hexyl, octyl, cyclohexyl And the like.
- nitrogen atom include fluorine, chlorine and bromine atoms.
- Examples of the alkoxy group include a methoxy group, an ethoxy group, and a propoxy group.
- Examples of the acyloxy group include an acetyloxy group.
- Examples of the substituent of the above-mentioned alkyl group, amino group, phenyl group and naphthyl group include the aforementioned linear or branched alkyl group having 1 to 10 carbon atoms, a halogen atom, an alkoxy group, a hydroxyl group, a nitro group, Examples include benzoyl group, carboxyl group, acetyl group and other acyl groups, methylthio groups, sulfonic acid groups and the like.
- optically active carboxylic acids such as tartaric acid, malic acid, lactic acid, mandelic acid, dibenzoyltartaric acid, citramaric acid, phenyllactic acid, pantothenic acid, and 1,4-benzodioxane-12-carboxylic acid.
- Hydroxycarboxylic acids and their derivatives 2-bromopropionic acid, ⁇ -carboxy- ⁇ -butyro Lactone, 2-chlorobutanoic acid, 2-methylhexanoic acid, 2-methyldecanoic acid, 2-methylbutanoic acid, menthoxyacetic acid, tetrahydrofuranic acid, 2-phenylbutanoic acid, 2-phenylpropionic acid, 2-phenylsuccinic acid,
- Examples include optically active N-substituted amino acids, pyroglutamic acid, camphoric acid, N-acetyl- (D) -valine and the like.
- optically active organic sulfonic acid examples include 10-camphorsulfonic acid, pheninoleethanetansolephonic acid, hybromocamphor- ⁇ -snolephonic acid, and 3-endporomocin 8-sulfonic acid.
- optically active organic phosphonic acid examples include 1-amino-2-methylpropionylphosphonic acid.
- optically active carboxylic acids represented by the general formula (1) preferred are the optically active 2-aryl-12-substituted acetic acids represented by the general formula (2).
- ( ⁇ represents a linear or branched alkyl group having 1 to 10 carbon atoms, a halogen atom, an alkoxy group, an acyloxy group or a hydroxyl group.
- Ar represents a substituted or unsubstituted phenyl group or a naphthyl group.
- the substituent is a linear or branched alkyl group having 1 to 1 ° carbon atom, a halogen atom, an alkoxy group, a hydroxyl group, a nitro group, a benzoyl group, a carboxyl group, a methylthio group or a sulfonic acid group. Represents an asymmetric carbon.
- a linear or branched alkyl group having 1 to 10 carbon atoms represented by Y a linear or branched alkyl group having 1 to 10 carbon atoms represented by Y, a halogen atom, an alkoxy group, an acyloxy group represented by Y
- the group include those exemplified in the general formula (1).
- Ar include a substituted or unsubstituted phenyl group and a naphthyl group.
- the substituent include the aforementioned linear or branched alkyl group having 1 to 10 carbon atoms, a halogen atom, an alkoxy group, a hydroxyl group, Nitro group, carboxy And sulfonic acid groups.
- optically active 2-aryl-12-substituted acetic acid represented by the above general formula (2) (monoacetyl mandelic acid and the like can be mentioned.
- optically active 2-aryl-12-substituted acetic acid represented by the general formula (2) include an optically active mandelic acid derivative represented by the following general formula (3).
- Z represents hydrogen or a linear or branched alkyl group having 1 to 10 carbon atoms, a halogen atom, an alkoxy group, a hydroxyl group, a nitro group, a methylthio group or a benzoyl group. * Represents an asymmetric carbon. m is an integer of 1 to 5, and when m ⁇ 2, Z may be the same or different.)
- optically active mandelic acid derivative represented by the general formula (3) specific examples of the linear or branched alkyl group having 1 to 10 carbon atoms represented by Z, a halogen atom, and an alkoxy group are as described above. Examples thereof include those exemplified in the general formula (1).
- Z is preferably hydrogen, methyl, ethyl, fluorine, chlorine, bromine, methoxy, ethoxy, hydroxyl, methylthio or nitro, more preferably hydrogen, chlorine Or a nitro group.
- the optically active mandelic acid derivative represented by the above general formula (3) is preferably mandelic acid, 2-chloromandelic acid, 3-chloromandelic acid, 4-chloromandelic acid, 2-bromomandelic acid, 3- Bromomandelic acid, 4-Monobromomandelic acid, 2-Hydroxymandelic acid, 3-Hydroxymandenoleic acid, 4-Hydroxymandenoleic acid, 2-Methylmandelic acid, 3-Methynolemandelic acid, 4-Methylmandelic acid, 2 —Methoxymandelic acid, 3—Methoxymandelic acid, 4—Methoxymandelic acid, 2—2 It is tromandelic acid, 3-nitromandelic acid, 412 tromandelic acid, or methyl thiomandelic acid, more preferably mandelic acid, 2-chloromandelic acid, 4-1 chloromandelic acid, or 412 tromandelic acid.
- optically active mandelic acid derivatives are optional.
- they can be prepared by the methods described in Japanese Patent Application Laid-Open Nos. Hei 9-94996 and Hei 4-2-25991. it can.
- the solvent which can be used when the optically active organic acid is allowed to act on racemic 4-amino-2-methylbutan-1-ol is not particularly limited, but is preferably water, methanol, ethanol, or the like.
- Various alcohols such as isopropanol, ⁇ -propanol, and butanol; ethers such as getyl ether, isopropyl ether, tetrahydrofuran and dioxane; ketones such as acetone and methyl ethyl ketone; esters such as methyl acetate and ethyl acetate.
- Nitrogen-containing solvents such as acetonitrile and dimethylformamide; halogenated hydrocarbons such as dichloromethane, dichloroethane and chloroform; and mixed solvents thereof. More preferably, water, methanol, ethanol, isopropanol, n-propanol, isopropyl ether, acetone, acetonitrile, or a mixed solvent thereof is used.
- a method for forming a diastereomer salt in a solvent is optional.
- an optically active organic acid used as an optical resolving agent is dissolved in an appropriate solvent as described above, and an equimolar racemic form of 4-amino-2-methylbutan-1-ol is directly diluted or diluted with an appropriate solvent.
- the mixture may be added dropwise to form a diastereomer salt, or may be mixed in the reverse order.
- the mixing temperature is optional, but is preferably from 0 to 100 ° C, more preferably from 10 to 80 ° C.
- the molar ratio of the racemic form of the optically active organic acid and 4-amino-12-methylbutane-111-ol used is arbitrary, but is preferably 0.2-5, more preferably 0.5-2.
- the concentration of the racemic form of the optically active organic acid and 4-amino-12-methylbutane-l-ol is arbitrary, but is preferably 0.1 to 80% (by weight), respectively. More preferably, it is 1 to 50 (weight)%.
- the diastereomer salt solution obtained in this way can be cooled directly after concentration or after concentration, to precipitate crystals. At this time, the seed crystal By adding a small amount of diastereomer salt crystals with high optical purity, it is possible to efficiently crystallize.
- the seed crystal has high optical purity, but the addition amount of about 0.01 to 1% of the dissolved mass is sufficient. Also, crystallization of the diastereomer salt occurs spontaneously in the supersaturated state without adding any seed crystal, and the diastereomer salt may precipitate as in the case where the seed crystal is added. From the mother liquor after the crystal separation, the salt of the enantiomer 4-amino-2-methylbutane-111-ol can be recovered by an operation such as concentration. Therefore, any optical isomer can be obtained.
- the diastereomer salt thus obtained can be converted to a more optically pure diastereomer monosalt by recrystallization using a suitable solvent such as ethanol as described above.
- the optically active amino alcohol can be recovered by neutralizing the diastereomer salt or treating with an ion exchange resin.
- the optically active organic acid used as the resolving agent can be recovered and reused.
- Examples of the salt of the optically active 4-amino-2-methylbutan-l-l-ol and the optically active organic acid (optically active optical resolving agent) in the present invention include an optically active compound represented by the following general formula (4). —Amino-2-methylbutan-1-ol and a salt of an optically active carboxylic acid, an optically active sulfonic acid or an optically active phosphonic acid.
- optically active carboxylic acid optically active sulfonic acid or optically active phosphonic acid in the general formula (4) include the same as those exemplified in the general formula (1).
- Preferred examples of the salt represented by the general formula (4) include an optically active 2-aryl-2-monosubstituted acetic acid and an optically active 4-amino-2-methyi represented by the following general formula (5). Salts with butane one 1 one-ol and the like (
- optically active 2-aryl-12-substituted acetic acid in the general formula (5) include the same as those exemplified in the general formula (2).
- an optically active mandelic acid derivative represented by the following general formula (6) an optically active 4-amino-2-methylbutane-1-1-ol Salts.
- the diastereomer salt obtained as above is brought into contact with a solvent and an alkali to demineralize, and after cooling, solid-liquid separation is performed.
- 4-Amino-1-methylbutane-1-ol can be obtained.
- the alkali metal preferably, an alkali metal hydroxide, an alkali earth metal hydroxide, an alkali metal alcoholate, an alkaline earth metal alcoholate and ammonia are used, more preferably an alkali metal hydroxide.
- the amount of the alcohol used is preferably 0.5 to 3 equivalents, more preferably 0.9 to 1.1 equivalents to the diastereomer salt.
- the solvent to be brought into contact with the diastereomer salt is not particularly limited.
- Ethers such as methyl tert-butyl ether, ketones such as acetone and methyl ethyl ketone, esters such as methyl acetate and ethyl acetate, nitrogen-containing solvents such as acetonitrile and dimethylformamide, or a mixture thereof Is used.
- various alcohols such as water, methanol, ethanol, isopropanol, n-propanol and butanol, or a mixture thereof are used.
- any method may be used as the contacting method.
- diastereomer monosalt is added to a solvent, and at least a part of the diastereomer salt is dissolved. Can be added.
- the temperature is usually from the melting point of the solution to the boiling point, preferably from 30 ° C to the boiling point.
- the amount of the solvent is such that the separated mother liquor can be recycled and used as little as possible.
- the amount is from 0.1 to 100 times (weight) the diastereomer salt.
- the amount is 1 to 5 times (weight).
- Operations such as cooling and concentration can be performed to promote crystallization of the alkali salt of the optically active optical resolving agent.
- the temperature after cooling is preferably 30 ° C from the melting point of the solvent, and more preferably 0 to 15 ° C.
- the solid-liquid separation between the alkali salt of the organic acid and the mother liquor may be carried out by any method, but may be carried out by, for example, filtration or sedimentation. In filtration, centrifugal filtration, pressure filtration, or vacuum filtration can be used. The filter obtained by the solid-liquid separation may be washed with a solvent if necessary.
- a high-concentration solution of optically active 4-amino-12-methylbutane-1-ol can be obtained.
- the concentration is usually carried out at normal pressure or reduced pressure, preferably at 30 to 120 ° C. If necessary, simple distillation or rectification can provide highly pure optically active 4-amino-2-methylbutane.
- the conditions for the distillation are not particularly limited, but the distillation is preferably performed under a vacuum of 1 to 12 O Torr at a temperature of 50 to 200 ° C, more preferably at a temperature of 60 to 150 ° C.
- An optically active optical resolving agent can be recovered by bringing the above-mentioned solid-liquid separated filter into contact with a solvent and an acid, cooling, and then performing solid-liquid separation of the precipitate.
- the solvent used at this time is not particularly limited, but is preferably water, methanol, ethanol, isopro-no-no, or n-prono.
- Various alcohols such as nonole and butanol, ethers such as getyl ether, isopropyl ether, tetrahydrofuran and dioxane, ketones such as acetone and methyl ethyl ketone, or a mixture thereof are used.
- Water, methanol, ethanol, isopropanol, n-propanol, butanol, and other various anolecols or mixtures thereof are used.
- the acid a mineral acid such as hydrochloric acid, nitric acid or sulfuric acid can be used.
- the pH after adding the acid is preferably 3 or less, and more preferably 1-2.
- the temperature at the time of solid-liquid separation is preferably 40 ° C or less, more preferably 0 to 1 ° C.
- the contacting method may be any method.
- an alkali salt of an optically active optical resolving agent is added to a solvent, at least a part of the salt is dissolved, and an acid can be added with stirring.
- the temperature is usually from the melting point of the solution to the boiling point, preferably from 30 ° C to the boiling point.
- the amount of the solvent is such that the separated mother liquor can be recycled and used as little as possible, but preferably 0.1 to 100 times the amount of the alkali salt of the optically active optical resolving agent. (Weight), and more preferably 1 to 5 times (weight). Operations such as cooling and concentration can be performed to promote crystallization of the optically active optical resolving agent.
- the temperature after cooling is preferably 40 ° C. from the melting point of the solvent, More preferably, it is 0 to 15 ° C.
- the solid-liquid separation between the optically active optical resolving agent and the mother liquor can be carried out by any method, for example, by filtration or sedimentation. In the filtration, centrifugal filtration, pressure filtration or vacuum filtration can be used. The filter obtained by solid-liquid separation may be washed with a solvent if necessary.
- a diastereomer salt of optically active 4-amino-2-methylbutane-1-ol and an optically active optical resolution agent is contacted with a solvent such as an alcohol and an alkali such as an alkali metal alcoholate. And dissolves the salt, replacing the solvent such as alcohol with an alcohol having low solubility in the optically active optical resolving agent alkali salt (alkali metal salt), and replacing it with the optically active optical resolving agent alkali salt (alkali metal salt).
- the optically active 4-amino-2-methylbutane monoamine solution has a low concentration of the alkali salt (alkali metal salt) of the optically active optical resolving agent by solid-liquid separation of the optically active 4-amino-2-methylbutane monool solution. 1 All-ol solution can be obtained. By concentrating or distilling the solution, high-purity optically active 4-amino-12-methylbutan-1-ol can be produced in high yield.
- the solvent to be brought into contact with the diastereomer salt in the above method is not particularly limited as described above, and examples thereof include alcohols, particularly, methanol and ethanol.
- examples of alcohols having low solubility of an alkali salt (alkali metal salt) of an optically active optical resolving agent include isopropyl alcohol, n-butanol, 2-butanol and t-butanol.
- Examples of the alcohol that is brought into contact with the diastereomer salt include the same ones as described above, and examples of the anorecali metal alcoholate include alcoholates of alcohols such as methanol and ethanol with sodium and potassium.
- the amount of the alkali metal alcoholate to be used is preferably 0.5 to 3 equivalents, more preferably 0.9 to 1.1 equivalents, based on the diastereomer salt.
- the contacting method may be any method, but adding a diastereomer salt in alcohol, dissolving at least a part of the salt, and adding a granular material, a suspension, or an alkali metal alcoholate in an alcohol solution with stirring.
- the temperature is usually from the melting point of the solution to the boiling point, preferably from 30 & C to the boiling point.
- the amount of solvent is The used mother liquor can be recycled and used as little as possible, but it is preferably 0.1 times to 100 times (weight) the diastereomer salt, and more preferably 1 time. The amount is up to 5 times (weight).
- operations such as cooling, concentration, and replacement with a solvent having low solubility can be performed.
- the temperature after cooling is preferably from the melting point of the solvent to 30 ° C, more preferably from 0 ° C to 15 ° C.
- Displacement concentration can also be performed. This displacement concentration is performed by adding a solvent having low solubility of an alkali salt of an organic acid (optical resolving agent) while concentrating, thereby replacing the solvent to form an alkali salt of the organic acid. Is to promote crystallization.
- the solid-liquid separation between the alkali metal salt of the optically active optical resolving agent and the mother liquor may be carried out by any method, for example, by filtration or sedimentation.
- filtration centrifugal filtration, pressure filtration or vacuum filtration can be used.
- the filter obtained by solid-liquid separation may be washed with a solvent if necessary.
- By heating and concentrating the solution obtained by solid-liquid separation a highly concentrated solution of optically active 4-amino-2-methylbutane-111-ol can be obtained.
- the concentration is usually performed under normal pressure or reduced pressure, preferably at 30 to 120 ° C.
- simple distillation or rectification can provide high-purity optically active 4-amino-2-methylbutan-1-1-ol.
- the distillation is preferably carried out under a vacuum of 1 to 12 O Torr and at a temperature of 50 to 200 ° C, more preferably 60 to 150 ° C.
- the alkali salt (alkali metal salt) of the optically active optical resolving agent thus obtained is brought into contact with a solvent and an acid in the same manner as described above, and the precipitate is solid-liquid separated.
- the optical resolving agent can be recovered.
- an optically active quaternary amino-2-methylbutan-1-ol and a diastereomer salt of an optically active optical resolving agent are brought into contact with water and Z or an alcohol and an alkali metal hydroxide to form a salt.
- Z or the alcohol is replaced with an alcohol such as butanol, which has a low solubility in the optically active optical resolving agent, and the optically active optical resolving agent is replaced with an alcoholic metal salt.
- An optically active optical resolving agent is formed by solid-liquid separation of a 1-ol solution.
- An optically active 4-monoamino-2-methylbutane-1-ol solution with a low concentration of metal salts Can be obtained. The obtained solution can be concentrated and distilled to produce high-purity optically active 4-amino-2-methylbutane-1-ol in high yield.
- the same alcohols as mentioned above can be mentioned, and particularly, methanol, ethanol and the like can be mentioned.
- the alcohol having a low solubility of the alkali metal salt of the optically active optical resolving agent include isopropinoleanolone, n-butanoone, 2-butanoone, and t-butanoone.
- alkali metal hydroxide preferably used are sodium hydroxide, hydroxylated water, and lithium hydroxide, and more preferably, sodium hydroxide.
- the amount of the alkali metal hydroxide to be used is preferably 0.5 to 3 equivalents, more preferably 0.9 to 1.1 equivalents, based on the diastereomer salt.
- the contacting method may be any method, but a diastereomeric salt is added to a solvent, at least a part of the salt is dissolved, and a powder, a suspension, or an alkali metal hydroxide of a solution is added with stirring. be able to.
- the temperature is usually from the melting point of the solution to the boiling point, preferably from 30 ° C to the boiling point.
- the amount of the solvent can be used by recycling the separated mother liquor and using as little as possible.
- the amount of the solvent is from 0.1 to 100 times (weight) of the diastereomer salt. More preferably, the amount is 1 to 5 times (weight).
- operations such as cooling, concentration, and replacement with a solvent having low solubility can be performed.
- concentration is usually carried out by heating under normal pressure or reduced pressure, preferably at 30 to 120 ° C. Cooling can be performed if necessary, and the temperature after cooling is preferably from the melting point of the solvent to 30 ° C, and more preferably from 0 ° C to 15 ° C.
- crystallization of the alkali metal salt of the optical resolving agent can be advanced.
- an operation such as replacing water and / or alcohol with a solvent having low solubility
- crystallization of the alkali metal salt of the optical resolving agent can be advanced.
- To replace the solvent with a solvent with low solubility such as a method of adding a solvent with low solubility of the alkali metal salt of the optically active optical resolving agent while concentrating, or a method of adding a solvent with low solubility after concentration, etc. It can be performed.
- Solid-liquid separation between the alkali metal salt of the optically active optical resolving agent and the mother liquor can be performed by any method. However, it can be separated by, for example, filtration or sedimentation. For filtration, centrifugal filtration, pressure filtration or vacuum filtration can be used. The filtrate obtained by the solid-liquid separation may be washed with a solvent if necessary.
- the alkali metal salt of the optically active optical resolving agent thus obtained is brought into contact with a solvent and an acid in the same manner as above to separate the precipitate into a solid and a liquid. Can be recovered.
- Examples of the diastereo salt of the optically active 4-amino-2-methylbutane-111-ol and the optically active optical resolving agent used in the method of the present invention include the above-mentioned general formulas (4), (5) and And (6).
- a diastereomer salt of optically active 4-amino-2-methylbutan-1-ol and an optically active optical resolving agent (optically active organic acid) can be produced, and the diastereomer salt is used to prepare the diastereomer salt.
- Active 4-amino-2-methylbutan-1-ol can be produced.
- the optically active optical resolving agent used in the production of optically active 4-amino-2-methylbutane-1-1-ol can be recovered, and the optically active optical resolving agent thus recovered can be reused.
- optically active 4-amino-12-methylbutane-111-ol can be produced.
- optically active 4-amino-2-methylbutan-l-lol thus obtained can be used as an intermediate for the synthesis of optically-active medicaments and agricultural chemicals.
- Metalbutane-one ol can be used to produce optically active medicaments and pesticides.
- the optical purity of 4-amino-2-methylbutan-111-ol in the obtained crystals was measured by inducing the crystals into dibenzoyl compounds as follows. That is, 0.29 g of crystals of the diastereomer salt was dissolved in 2 m of IN NaOH and extracted three times with an equal amount of tetrahydrofuran. The organic phase was concentrated under reduced pressure to obtain 0.09 g of optically active 4-amino-2-methylbutan-111-ol. Of these, about 2 Omg was weighed, 1 m1 of methylene chloride, 60 mg of pyridine and 60 mg of benzoinole chloride were added in this order, and reacted at room temperature for 10 minutes.
- Example 8 Replace the optically active organic acid used with (R) -412 tromandelic acid and replace the seed crystal with the salt of (R) -4-nitromandelic acid '(R) —4-amino-2-methylbutan-1-ol.
- Example 8 Replace the optically active organic acid used with (R) -412 tromandelic acid and replace the seed crystal with the salt of (R) -4-nitromandelic acid '(R) —4-amino-2-methylbutan-1-ol.
- 1.32 g of diastereomer salt crystals were obtained.
- the optical purity of the optically active 4-amino-12-methylbutan-l-ol in the crystal was 86.6% e.e.
- the optical purity of 4-amino-12-methylbutane-111-ol in this crystal was (R) -isomer 63% e.e.
- the crystals were further dissolved in 110 Om 1 of isopropanol by heating, and the recrystallization operation was repeated to obtain 102 g of diastereomer salt crystals having high optical purity.
- the optical purity of the 4-amino-2-methylbutane-111-ol in this crystal was (R) -form 99.9% e.e.
- Example 10 100 g of the diastereomer salt crystal with high optical purity obtained in Example 10 was dissolved by heating in 415 g of methanol, and dissolved by adding 80 g of a 28% methanol solution of sodium methylate. After salting and cooling to 5 ° C, solid-liquid separation was performed. The separated solution was concentrated and distilled under vacuum to obtain 15 g of (R) -4-amino-2-methylbutane-11-all. The optical purity of the obtained (R) -4-amino-2-methylbutan-1-ol was 99.9% e.e.
- the filter obtained by solid-liquid separation was heated and dissolved in 8 Og of water, and after adding 7 g of concentrated sulfuric acid, the mixture was cooled to 5 ° C and subjected to solid-liquid separation.
- the recovered (R) -2-chloromandelic acid was 22 g.
- Example 1 Replace the optically active organic acid used with (R) -mandelic acid and replace the seed crystal with a salt of (R) -mandelic acid '(R)-4-amino-2-methylbutane-111-ol, and recrystallize. In the same manner as in Example 1 except that the procedure was not repeated, 0.58 g of diastereomer salt crystals were obtained. The optical purity of the optically active 4-amino-12-methylbutane-1-ol in the crystal was (R) form 87.8% e.e.
- optically active 4-amino-2-methylbutan-l-l-ol which is useful as an optically active pharmaceutical / agrochemical synthesis intermediate, can be provided on an industrial scale with high yield, high purity, and low cost. Further, according to the present invention, the used optical resolving agent can be recovered in a high yield.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP00956999A EP1219593A4 (en) | 1999-09-07 | 2000-09-07 | METHOD FOR PRODUCING AN OPTICALLY ACTIVE AMINAL ALCOHOL |
US10/070,365 US6743944B1 (en) | 1999-09-07 | 2000-09-07 | Process for producing optically active aminoalcohol |
JP2001521691A JP4728548B2 (ja) | 1999-09-07 | 2000-09-07 | 光学活性アミノアルコールの製造方法 |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11/252902 | 1999-09-07 | ||
JP25290299 | 1999-09-07 | ||
JP2000205074 | 2000-07-06 | ||
JP2000/205074 | 2000-07-06 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2001017944A1 true WO2001017944A1 (fr) | 2001-03-15 |
Family
ID=26540935
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2000/006092 WO2001017944A1 (fr) | 1999-09-07 | 2000-09-07 | Procede relatif a l'elaboration d'aminoalcool optiquement actif |
Country Status (4)
Country | Link |
---|---|
US (1) | US6743944B1 (ja) |
EP (1) | EP1219593A4 (ja) |
JP (1) | JP4728548B2 (ja) |
WO (1) | WO2001017944A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7612226B2 (en) | 2005-04-28 | 2009-11-03 | Pfizer Inc. | Amino acid derivatives |
JP2013530977A (ja) * | 2010-06-25 | 2013-08-01 | ウーツェーベー ファルマ ゲーエムベーハー | 窒素置換(s)−5−アルコキシ−2−アミノテトラリン誘導体の分割方法 |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2927900B1 (fr) * | 2008-02-27 | 2010-09-17 | Clariant Specialty Fine Chem | Procede de preparation d'alpha-aminoacetals optiquement actifs. |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3553257A (en) * | 1966-09-16 | 1971-01-05 | American Cyanamid Co | Preparation of d-2-amino-1-butanol salts |
US4330484A (en) * | 1979-08-22 | 1982-05-18 | Basf Aktiengesellschaft | Diastereomeric salts of malic acid and 2-aminobutanol, and process for the resolution of rademis maic acid |
EP0089139A2 (en) * | 1982-03-16 | 1983-09-21 | Beecham Group Plc | Antibiotics, their preparation and use |
US5770590A (en) * | 1995-03-24 | 1998-06-23 | Takeda Chemical Industries, Ltd. | Cyclic compounds, their prudiction and use |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CS208913B1 (cs) * | 1971-12-20 | 1981-10-30 | Alois Krajicek | Způsob výroby (+)-2-amino-1-butanolu štěpením rácemického aminobutanolu |
JPS50111004A (ja) * | 1974-02-18 | 1975-09-01 | ||
DE2733425C2 (de) | 1977-07-23 | 1982-08-26 | Riedel-De Haen Ag, 3016 Seelze | Verfahren zur Herstellung von D(-)-Mandelsäure aus DL-Mandelsäure durch racemische Spaltung |
US4239912A (en) | 1978-12-08 | 1980-12-16 | American Cyanamid Company | Process for resolving DL-Mandelic acid with novel 2-benzylamino-1-butanols |
US4260815A (en) | 1979-10-09 | 1981-04-07 | American Cyanamid Company | Process for preparing a solution of DL-mandelic acid |
US4259521A (en) * | 1979-10-09 | 1981-03-31 | American Cyanamid Company | Process for resolving DL-mandelic acid |
JPS56123936A (en) * | 1980-03-05 | 1981-09-29 | Hiroyuki Nohira | Optical resolution of (+-)-2-amino-1-butanol and/or (+-)- mandelic acid |
JPS5844393A (ja) | 1981-09-09 | 1983-03-15 | 株式会社日立製作所 | ドライチユ−ブ交換方法及び装置 |
JP2698936B2 (ja) | 1990-08-16 | 1998-01-19 | 日東化学工業株式会社 | R(‐)―マンデル酸誘導体の製造法 |
JP3081649B2 (ja) | 1990-12-20 | 2000-08-28 | 三菱レイヨン株式会社 | S−(+)−マンデルアミドおよびその誘導体の製造法 |
JP3312459B2 (ja) | 1993-12-28 | 2002-08-05 | 東レ株式会社 | 光学活性アミンの単離方法 |
JP3856850B2 (ja) * | 1994-08-18 | 2006-12-13 | 生化学工業株式会社 | 光学活性アミノケトン及びアミノアルコールの製造方法 |
JPH08291157A (ja) | 1995-04-25 | 1996-11-05 | Mitsubishi Gas Chem Co Inc | 新規な3−メチルテトラヒドロフランの製法 |
JP2976097B2 (ja) * | 1995-03-24 | 1999-11-10 | 武田薬品工業株式会社 | 環状化合物、その製造法および剤 |
-
2000
- 2000-09-07 US US10/070,365 patent/US6743944B1/en not_active Expired - Fee Related
- 2000-09-07 WO PCT/JP2000/006092 patent/WO2001017944A1/ja not_active Application Discontinuation
- 2000-09-07 JP JP2001521691A patent/JP4728548B2/ja not_active Expired - Fee Related
- 2000-09-07 EP EP00956999A patent/EP1219593A4/en not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3553257A (en) * | 1966-09-16 | 1971-01-05 | American Cyanamid Co | Preparation of d-2-amino-1-butanol salts |
US4330484A (en) * | 1979-08-22 | 1982-05-18 | Basf Aktiengesellschaft | Diastereomeric salts of malic acid and 2-aminobutanol, and process for the resolution of rademis maic acid |
EP0089139A2 (en) * | 1982-03-16 | 1983-09-21 | Beecham Group Plc | Antibiotics, their preparation and use |
US5770590A (en) * | 1995-03-24 | 1998-06-23 | Takeda Chemical Industries, Ltd. | Cyclic compounds, their prudiction and use |
Non-Patent Citations (2)
Title |
---|
J. CORSE ET AL.: "Dihydrozeatin: An improved synthesis and resolution of both isomers", J. PLANT GROWTH REGUL., vol. 2, no. 1, 1983, pages 47 - 57, XP002934779 * |
See also references of EP1219593A4 * |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7612226B2 (en) | 2005-04-28 | 2009-11-03 | Pfizer Inc. | Amino acid derivatives |
JP2013530977A (ja) * | 2010-06-25 | 2013-08-01 | ウーツェーベー ファルマ ゲーエムベーハー | 窒素置換(s)−5−アルコキシ−2−アミノテトラリン誘導体の分割方法 |
US8981121B2 (en) | 2010-06-25 | 2015-03-17 | Ucb Pharma Gmbh | Process for the preparation of nitrogen substituted aminotetralins derivatives |
Also Published As
Publication number | Publication date |
---|---|
JP4728548B2 (ja) | 2011-07-20 |
US6743944B1 (en) | 2004-06-01 |
EP1219593A1 (en) | 2002-07-03 |
EP1219593A4 (en) | 2004-09-01 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP2839344B2 (ja) | 環状アミノ酸、並びにその中間体の製造方法 | |
JP5254836B2 (ja) | ベナゼプリル及びその類似体の生産に有用な中間体の速度論的分離 | |
US9771317B2 (en) | Process for preparing lacosamide and related compounds | |
JPH0674243B2 (ja) | 光学純度の高い光学活性アテノロール塩及びアテノロールの製法 | |
WO2001017944A1 (fr) | Procede relatif a l'elaboration d'aminoalcool optiquement actif | |
EP0036265B1 (en) | Method of optical resolution of (+/-)-2-amino-1-butanol and/or (+/-) -mandelic acid | |
JP2002512223A (ja) | 純粋な鏡像体であるn−メチル−n−[(1s)−1−フェニル−2−((3s)−3−ヒドロキシピロリジン−1−イル)エチル]−2,2−ジフェニルアセトアミドの製造方法 | |
US7238839B2 (en) | Process for the resolution of racemic (R,S) -5-(2-(2-(2- ethoxyphenoxy) ethylamino)Propyl)-2-methoxybenzene sulfonamide (tamsulosin), its novel R and S isomers and their salts and processes for their preparation | |
EP1341762A1 (en) | Process for resolving racemic mixtures of piperidine derivatives | |
JP2971291B2 (ja) | 光学活性2−アミノ酪酸の製法 | |
JP4126921B2 (ja) | 光学活性なβ−フェニルアラニン誘導体の製造方法 | |
WO2002020461A1 (fr) | 3-amino-1-indanole, technique de synthese de ce compose et procede de resolution optique | |
JP4093608B2 (ja) | 光学活性2−フェノキシプロピオン酸の製造方法 | |
KR100305152B1 (ko) | C-치환디에틸렌트리아민의제조방법 | |
JPH03503288A (ja) | 分割方法 | |
JPH1160543A (ja) | 1−アミノテトラリン−2−オールの光学分割方法と分割の過程で生じるジアステレオマー塩 | |
US20040039206A1 (en) | Process for resolving racemic mixtures of piperidine derivatives | |
JP2003137835A (ja) | (r)−3−ヒドロキシ−3−(2−フェニルエチル)ヘキサン酸の製造方法 | |
JP3300712B2 (ja) | 光学活性な2,2−ジメチル−5−フェニル−1,3−ジオキソラン−4−オンの製造法 | |
JPH09241227A (ja) | 新規光学分割剤 | |
WO2002022543A1 (fr) | Procede de preparation d'un derive d'acide carboxylique optiquement actif | |
JPS61103852A (ja) | 2−フエニルプロピオン酸エステル類の光学分割法 | |
JPH08183779A (ja) | 光学活性ピペラジン誘導体の製造方法および製造の中間体 | |
JP2003095991A (ja) | 光学活性3,3,3−トリフルオロ−2−ヒドロキシ−2−メチルプロピオン酸の製造法 | |
JPH09100259A (ja) | 光学活性な二級アミンの製造方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): JP US |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
DFPE | Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101) | ||
WWE | Wipo information: entry into national phase |
Ref document number: 10070365 Country of ref document: US |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2000956999 Country of ref document: EP |
|
WWP | Wipo information: published in national office |
Ref document number: 2000956999 Country of ref document: EP |
|
WWW | Wipo information: withdrawn in national office |
Ref document number: 2000956999 Country of ref document: EP |