WO2005118524A1 - Procede de preparation de derives de [(s)-(-)-alpha-methylamino phenylacetone]2 (2r,3r)-acide tartrique - Google Patents
Procede de preparation de derives de [(s)-(-)-alpha-methylamino phenylacetone]2 (2r,3r)-acide tartrique Download PDFInfo
- Publication number
- WO2005118524A1 WO2005118524A1 PCT/CN2005/000744 CN2005000744W WO2005118524A1 WO 2005118524 A1 WO2005118524 A1 WO 2005118524A1 CN 2005000744 W CN2005000744 W CN 2005000744W WO 2005118524 A1 WO2005118524 A1 WO 2005118524A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- methylaminophenylacetone
- tartaric acid
- acid
- methylamino
- phenylacetone
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C221/00—Preparation of compounds containing amino groups and doubly-bound oxygen atoms bound to the same carbon skeleton
-
- 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
Definitions
- the present invention relates to an intermediate for preparing (1R, 2S)-(-)-ephedrine: [(S)-(-)--aminophenylphenylacetone] 2 ⁇ (2R, 3R) -tartaric acid derivative Preparation. ' Background technique
- [(S)-(-)-a-methylaminophenylacetone] 2 ⁇ (2R, 3R) -tartaric acid derivatives are generally prepared by resolving the compound (Earth) - ⁇ -methylaminophenylacetone.
- Chinese patent CN1298867A uses (lR, 3S)-(+) _ camphoric acid as a resolving agent, and equimolar ( ⁇ ) - ⁇ -methylaminophenylacetone and (lR, 3S)-(+)-camphoric acid In ethanol, heat to dissolve, cool to crystallize, and separate (RM +)- a -methylaminophenylacetone, (1 38)-(+)-camphoric acid; then precipitate the required (S) in another solvent system.
- )-(-)-ci-methylaminophenylacetone * (1R, 3S)-(+)-camphoric acid needs to undergo heating and cooling processes, and the preparation process is relatively complicated.
- Chinese patents CN1267664A and CN1265391A use (1R)-(-)-camphorsulfonic acid as a resolving agent, and put ( ⁇ ) - ⁇ -methylaminophenylacetone and (lR)-(-)-camphorsulfonic acid in water, Dissolve by heating and cool the crystals to obtain (S)-(-)- ⁇ -methylaminophenylacetone, (lR)-(-) Chapter 4 brain sulfonic acid.
- the salt formed by ⁇ -methylaminophenylacetone and organic acid is more sensitive to temperature, and under heating (> 50 ° C), side reactions are likely to occur, reducing the optical yield of resolution.
- U.S. Patent No. 2,802,865 dissolves the salt formed by ( ⁇ ) - ⁇ -methylaminophenylacetone with (1S)-(+)-camphorsulfonic acid or (2R, 3R)-(-)-dibenzoyltartaric acid at room temperature
- (1S)-(+)-camphorsulfonic acid or (2R, 3R)-(-)-dibenzoyltartaric acid In a single solvent: alcohol, and then cooled to 0-5 ° C, crystals are precipitated, but the optical purity is not high, usually it needs to crystallize several times. Since the solubility of the salt is not sensitive to temperature, the resolution is not high and the operation is complicated.
- Takamatsu H. Takamatsu, J. Pharm. Soc.
- Japan, 76, 1219 (1956)) discloses that using (2R, 3R)-(-)-dibenzoyltartaric acid as a resolving agent, -Methylaminophenylacetone and (2R, 3R)-(-)-dibenzoyltartaric acid were dissolved in ethyl acetate, left to stand, 4 kg of crystals were recrystallized, and then recrystallized from absolute ethanol. Takamatsu declared that it had achieved Symmetric transformation.
- CN1267664A, CN1265391A, and CN1298867A all add a certain amount of base to the resolution mother liquor, and heat the racemic ⁇ -methylaminophenylacetone. Because ⁇ -methylaminophenylacetone is unstable, after 15-31h of heating, side reactions occur, and the recovery of ⁇ -methylaminophenylacetone is low. Summary of the invention
- the technical problem to be solved by the present invention is to disclose a method for preparing [(S)-(-)- ⁇ -methylaminophenylacetone] 2 * (2 31) -tartaric acid derivative, so as to overcome the above-mentioned defects existing in the prior art.
- the method of the present invention includes the following steps:
- the methylaminophenylacetone includes: ( ⁇ ) -a-methylaminophenylacetone, (R)-(+)- a -methylaminophenylacetone or the inclusion part (S)-(+ a-methylamine (R)-(+ a-methylaminophenylacetone) of phenyl acetone;
- the reaction temperature is 0 ⁇ 40 ° C, and the reaction time is 2 ⁇ 48 hours.
- the structural formula of the methylaminophenylacetone is-
- the (2R, 3R) -tartaric acid derivatives include: (2R, 3R)-(-)-di-p-methylbenzoyltartaric acid, (2R, 3R)-(-)-di-p-methylbenzoyl Tartaric acid monohydrate, (2R, 3R)-(-)-di-m-methylbenzoyltartaric acid, (2R, 3R)-(-)-di-m-methylbenzoyltartaric acid monohydrate, (2R, 3R )-(-)-Di-o-methylbenzoyl tartaric acid, (2R, 3R)-(-)-di-o-methylbenzoyl tartaric acid monohydrate, (2R, 3R)-(-)-dibenzoyl Acyl tartaric acid, (2R, 3R)-(-)-dibenzoyl tartaric acid monohydrate, (2R, 3R)-(-)-diacetyltartaric acid, (2R,
- the said salt-forming solvent is selected from the group consisting of alcohols or water-containing alcohols, esters or ethers, or mixtures thereof; said mixed solvent is selected from the group consisting of alcohols and esters, the mixtures of water-containing alcohols and esters, the alcohols and Either a mixture of ethers or a mixture of aqueous alcohols and ethers.
- the alcohol is a C1-C5 alcohol, that is, C1-C50H
- the ester is an ester composed of an acid of C 5 and an alcohol of CC 5 , that is, a cc ⁇ cooc ether composed of an alcohol of cc 5 and an alcohol of cc 5 ether
- the weight ratio of the volume of the mixed solvent to ( ⁇ ) -methylaminophenylacetone is:
- R is: p-methylbenzoyl, o-methylbenzoyl, m-methylbenzoyl, benzoyl or acetyl;
- X is 0 or 1.
- the (R)-(+)- ⁇ -methylaminophenylacetone racemization method of the present invention includes the following steps: heating the resolution mother liquor at about 40 ⁇ 90 ° C for 0.5 ⁇ 4h, adding hydrochloric acid, sulfuric acid or phosphoric acid to the system The pH is about 1 ⁇ 3. Stir and separate the organic layer for recovery of the resolving agent. Add the alkali metal or alkaline earth metal hydroxide to the water layer to pH 10 ⁇ 14, and extract the racemic organic solvent. ⁇ -Methylaminophenylacetone, applied to the next batch resolution.
- 2 mol (earth) of monomethylaminophenylacetone and 1 mol of the resolving agent are used to form a salt. If chiral camphoric acid or camphorsulfonic acid is used as the resolving agent, 1 mol of the resolving agent can only be used with 1 mol (Earth) - ⁇ -methylaminophenylacetone forms a salt, so the resolution of the present invention is high.
- the invention does not require heating to dissolve the solids generated during the salt formation process, and cooling the heated solution to re-precipitate the solids, that is, it does not need to change the temperature of the system. At the set temperature, the invention only needs to continue after the end of the feeding Stir for a period of time or leave it for a period of time after stirring. After filtering, [(S)-(-)- ⁇ -methylaminophenylacetone] 2 ⁇ (2R, 3R) -tartaric acid derivatives can be obtained.
- Another feature of the present invention is: the resolution optical yield exceeds the theoretical amount, which can reach 158.7%; the diastereomeric purity (%) is 97.2% determined by capillary electrophoresis, and the optical purity is high, without further purification, It shows that asymmetric transformation was achieved during the splitting process. This is because the less soluble [(S)-(-)- ⁇ -methylaminophenylacetone] 2 ⁇ (2R, 3R) -tartaric acid derivative is precipitated in the solvent, which breaks the equilibrium in the system.
- the mother liquid is resolved by heating for a short time, and racemization of a-methylaminophenylacetone can be achieved. Due to the short heating time, the destruction of a-methylaminophenylacetone is reduced. In addition, because ct-methylaminophenylacetone still exists in the form of a salt, it is more stable than the free base, and the recovery rate of a-methylaminophenylacetone is improved. In addition, because no acid or base is added, it reduces the Material consumption; At the same time, under this condition, the hydrolysis of the resolving agent is slow and the loss is small. detailed description
- the salt was placed in an aqueous solution of sodium carbonate, the temperature was controlled to be less than 5 ° C, and extracted with dichloromethane. Dichloromethane was distilled off to obtain (S)-(-)-a-methylaminophenylacetone.
- the salt was placed in an aqueous solution of sodium carbonate, the temperature was controlled to less than 5 ° C, and extracted with dichloromethane. Dichloromethane is distilled off to obtain (S)-(-)--methylaminophenylacetone.
- the salt was placed in an aqueous solution of sodium carbonate, the temperature was controlled to be less than 5 ° C, and extracted with dichloromethane. Dichloromethane is distilled off to obtain (S)-(-)- ⁇ -methylaminophenylacetone.
- Example 1 The mother liquid for resolving in Example 1 was heated at about 50 ° C for about 1 hour, 4N hydrochloric acid was added until the pH of the system was about 1, and the organic layer was separated for recovery of the resolving agent. Aqueous 30% NaOH solution was added to the aqueous layer to a pH of about 14, and the racemic ⁇ -methylaminophenylacetone was extracted with ethyl acetate and applied to the next batch of resolution.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 200410024865 CN1293039C (zh) | 2004-06-02 | 2004-06-02 | [(S)-(-)-α-甲胺基苯丙酮]2·(2R,3R)-酒石酸衍生物的制备方法 |
CN200410024865.8 | 2004-06-02 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005118524A1 true WO2005118524A1 (fr) | 2005-12-15 |
Family
ID=34601012
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CN2005/000744 WO2005118524A1 (fr) | 2004-06-02 | 2005-05-27 | Procede de preparation de derives de [(s)-(-)-alpha-methylamino phenylacetone]2 (2r,3r)-acide tartrique |
Country Status (2)
Country | Link |
---|---|
CN (1) | CN1293039C (zh) |
WO (1) | WO2005118524A1 (zh) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101870660A (zh) * | 2010-05-10 | 2010-10-27 | 青海省青海湖药业有限公司 | 一种L-(-)-盐酸麻黄碱和d-(+)-盐酸伪麻黄碱制备方法 |
CN104119240A (zh) * | 2013-04-23 | 2014-10-29 | 中国人民解放军军事医学科学院毒物药物研究所 | (S)-(-)-α-甲胺基苯丙酮的制备方法 |
CN104725259B (zh) * | 2013-12-19 | 2017-01-18 | 上海医药工业研究院 | 左旋多巴中间体衍生物的制备方法 |
CN113024391A (zh) * | 2021-04-09 | 2021-06-25 | 北京旋光普利生物医药科技开发有限公司 | (S)-(-)- α -甲胺基苯丙酮的制备 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2802865A (en) * | 1954-06-15 | 1957-08-13 | Parke Davis & Co | Methylaminopropiophenone compounds and methods for producing the same |
US5227526A (en) * | 1992-06-16 | 1993-07-13 | Mallinckrodt Specialty Chemicals Company | Resolution of 3-dimethylamino-2-methylpropiophenone (3-DAMP) |
CN1265391A (zh) * | 2000-01-31 | 2000-09-06 | 李健府 | 左旋α-甲胺苯丙酮的制备及拆分剂重复使用方法 |
CN1267664A (zh) * | 2000-03-14 | 2000-09-27 | 李健府 | 左旋α-甲胺苯丙酮的制备 |
CN1298867A (zh) * | 1999-12-06 | 2001-06-13 | 赤峰艾克制药科技有限公司 | 光学活性的α-胺基苯丙酮的制备方法 |
-
2004
- 2004-06-02 CN CN 200410024865 patent/CN1293039C/zh active Active
-
2005
- 2005-05-27 WO PCT/CN2005/000744 patent/WO2005118524A1/zh active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2802865A (en) * | 1954-06-15 | 1957-08-13 | Parke Davis & Co | Methylaminopropiophenone compounds and methods for producing the same |
US5227526A (en) * | 1992-06-16 | 1993-07-13 | Mallinckrodt Specialty Chemicals Company | Resolution of 3-dimethylamino-2-methylpropiophenone (3-DAMP) |
CN1298867A (zh) * | 1999-12-06 | 2001-06-13 | 赤峰艾克制药科技有限公司 | 光学活性的α-胺基苯丙酮的制备方法 |
CN1265391A (zh) * | 2000-01-31 | 2000-09-06 | 李健府 | 左旋α-甲胺苯丙酮的制备及拆分剂重复使用方法 |
CN1267664A (zh) * | 2000-03-14 | 2000-09-27 | 李健府 | 左旋α-甲胺苯丙酮的制备 |
Also Published As
Publication number | Publication date |
---|---|
CN1583714A (zh) | 2005-02-23 |
CN1293039C (zh) | 2007-01-03 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP4795435B2 (ja) | エソメプラゾール及びその塩の製造方法 | |
EA005588B1 (ru) | Соли производных 3,3-дифенилпропиламинов | |
CA2731245C (en) | A process for preparing r-beta-amino phenylbutyric acid derivatives | |
EP3221296B1 (en) | Method for the production of praziquantel and precursors thereof | |
EP3414256B1 (en) | Purification process involving amine salt of obeticholic acid | |
WO2019242192A1 (zh) | 一种布瓦西坦中间体、其制备方法及布瓦西坦的制备方法 | |
US20190256522A1 (en) | Pharmaceutically acceptable salts and polymorphic forms of hydrocodone benzoic acid enol ester and processes for making same | |
WO2005118524A1 (fr) | Procede de preparation de derives de [(s)-(-)-alpha-methylamino phenylacetone]2 (2r,3r)-acide tartrique | |
JP5641802B2 (ja) | (s)−4−〔(4−クロロフェニル)(2−ピリジル)メトキシ〕ピペリジンのジアステレオマー塩の製造方法 | |
KR20120039344A (ko) | 엔독시펜의 신규한 제조 방법 | |
WO2016169533A1 (en) | A solid form of apremilast and a process for preparing the same | |
WO1994015904A1 (en) | Novel process and intermediates for the preparation of prodrugs | |
JPH1180149A (ja) | (±)−クロマンカルボン酸の光学分割法 | |
EP2035400B1 (en) | Method for the preparation of salts of 2-[2-(4-dibenzo[b,f][1,4]thiazepin-11-yl-1-piperazinyl)ethoxy]ethanol (quetiapine) | |
DK164739B (da) | Fremgangsmaade til fremstilling af l(-)carnitinhydrochlorid og indre l(-)carnitinsalt | |
JP2641542B2 (ja) | 非対称ジヒドロピリジン類の製造方法 | |
US6462229B1 (en) | Process for the preparation of (-)-α-(difluoromethyl)ornithine-monohydrochloride monohydrate | |
EP1341762A1 (en) | Process for resolving racemic mixtures of piperidine derivatives | |
CA2610651A1 (en) | Process for preparing 3,3-diarylpropylamines | |
WO2010126138A1 (ja) | 3環性ベンゾピラン化合物の新規な結晶形態及びその製造方法 | |
JP6670744B2 (ja) | ヒオデオキシコール酸ナトリウム(NaHDC)の多形形態およびその調製方法 | |
US6861525B2 (en) | Process for the preparation imidazo[1,2-A]pyridine-3-acetamides | |
WO2024022426A1 (zh) | 一种4-(三甲基铵)戊酸的制备方法 | |
WO2011158262A1 (en) | Polymorphic form of fexofenadine hydrochloride, intermediates and process for its preparation | |
JPH09241227A (ja) | 新規光学分割剤 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KM KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NA NG NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SM SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): BW GH GM KE LS MW MZ NA SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LT LU MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
DPEN | Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed from 20040101) | ||
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWW | Wipo information: withdrawn in national office |
Country of ref document: DE |
|
122 | Ep: pct application non-entry in european phase |