MX171684B - Procedimiento para preparar sal de acido mineral de ester metilico de aminoacidos - Google Patents
Procedimiento para preparar sal de acido mineral de ester metilico de aminoacidosInfo
- Publication number
- MX171684B MX171684B MX018904A MX1890489A MX171684B MX 171684 B MX171684 B MX 171684B MX 018904 A MX018904 A MX 018904A MX 1890489 A MX1890489 A MX 1890489A MX 171684 B MX171684 B MX 171684B
- Authority
- MX
- Mexico
- Prior art keywords
- mineral acid
- reaction solution
- amino acid
- degrees
- methyl ester
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C227/00—Preparation of compounds containing amino and carboxyl groups bound to the same carbon skeleton
- C07C227/38—Separation; Purification; Stabilisation; Use of additives
- C07C227/40—Separation; Purification
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C227/00—Preparation of compounds containing amino and carboxyl groups bound to the same carbon skeleton
- C07C227/14—Preparation of compounds containing amino and carboxyl groups bound to the same carbon skeleton from compounds containing already amino and carboxyl groups or derivatives thereof
- C07C227/18—Preparation of compounds containing amino and carboxyl groups bound to the same carbon skeleton from compounds containing already amino and carboxyl groups or derivatives thereof by reactions involving amino or carboxyl groups, e.g. hydrolysis of esters or amides, by formation of halides, salts or esters
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
La presente invención se refiere a el procedimiento mejorado para la produción y aislamiento en alta pureza y alto rendimiento, de una sal de ácido mineral de un ester metílico de aminoácidos a partir de una solución de reacción, que comprende los pasos de: (a) esterificar el aminoácido seleccionado con metanol en etanol, en presencia del ácido mineral correspondiente a la sal de ácido mineral seleccionado; (b) enfriar la solución de reacción obtenida de la esterificación para la precipitación de cristales; (c) separar los cristales precipitados del líquido sobrenadante; d) separar el metanol y el agua restantes de los cristales separados, ya sea por evaporación o lavado con solvente orgánico y (e) reciclar el líquido sobrenadante para rehusarlo en la reacción de esterificación, caracterizadas las mejoras porque (A) en la solución de reacción de la etapa (a), la cantidad total de metanol es 0.5-2 veces el peso del amino ácido y la concentración del agua no es mayor de 20 por ciento en peso; (B) el enfriamiento de la solución de reacción de la etapa (b) es conducida a por lo menos 20 grados C. (C) la temperatura de evaporación en la etapa (d) es de 20 a 80 grados C, a presión reducida; y (D) el líquido sobrenadante y reciclado tal y como está o despues de ser concentrado entre 20 a 60 grados C, bajo presión reducida, de tal modo de controlar el contenido de agua en la solución de reacción de la etapa (a).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP32786888 | 1988-12-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
MX171684B true MX171684B (es) | 1993-11-10 |
Family
ID=18203873
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
MX018904A MX171684B (es) | 1988-12-27 | 1989-12-26 | Procedimiento para preparar sal de acido mineral de ester metilico de aminoacidos |
Country Status (8)
Country | Link |
---|---|
US (1) | US5113009A (es) |
EP (1) | EP0376230B1 (es) |
KR (1) | KR940007413B1 (es) |
AU (1) | AU612921B2 (es) |
BR (1) | BR8906782A (es) |
CA (1) | CA2006737C (es) |
DE (1) | DE68919468T2 (es) |
MX (1) | MX171684B (es) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NO307503B1 (no) * | 1997-03-05 | 2000-04-17 | Kvaerner Process Systems As | FremgangsmÕte ved og anordning for behandling og bearbeiding av et fluid |
US20050148669A1 (en) * | 2004-10-21 | 2005-07-07 | Daniel Amato | Amino acid esters as nutrient supplements and methods of use |
US8039662B2 (en) * | 2007-03-09 | 2011-10-18 | Dsm Ip Assets B.V. | Process for the preparation of amino acid methyl esters |
US20100152480A1 (en) * | 2008-12-16 | 2010-06-17 | Ghare Vishwas Sadhu | Process for synthesis of cationic surfactants |
CN102234239A (zh) * | 2010-04-30 | 2011-11-09 | 山东大成农药股份有限公司 | 甘氨酸乙酯盐酸盐的优化工艺 |
CN107922313A (zh) * | 2015-08-04 | 2018-04-17 | 中化帝斯曼制药有限公司荷兰公司 | 二氢苯基甘氨酸甲酯的盐 |
CN105343097A (zh) * | 2015-09-24 | 2016-02-24 | 天津健莱得科技有限公司 | 一种含有咖啡因的组合物及其应用和制作方法 |
CN106316869A (zh) * | 2016-08-18 | 2017-01-11 | 精晶药业股份有限公司 | 一种β‑丙氨酸甲酯盐产品的合成方法 |
CN106946721B (zh) * | 2017-03-30 | 2019-01-01 | 湖南华诚生物资源股份有限公司 | 一种从猫豆中同时提取高纯度酪氨酸和左旋多巴的方法 |
CN108147974A (zh) * | 2017-12-28 | 2018-06-12 | 山东新华制药股份有限公司 | L-甲基多巴甲酯的制备工艺 |
JP6960532B2 (ja) | 2018-05-15 | 2021-11-05 | 旭化成株式会社 | アミノ酸アミノアルキルエステル又はその無機酸塩の製造方法 |
CN108892622A (zh) * | 2018-06-28 | 2018-11-27 | 江苏新瑞药业有限公司 | 一种缬氨酸烷基酯盐酸盐的合成方法 |
CN110606811B (zh) * | 2019-09-23 | 2022-12-02 | 湖北宇阳药业有限公司 | 一种l-丝氨酸甲酯盐酸盐的合成方法 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA727143A (en) * | 1966-02-01 | Taub Bernard | Process for amino acid esters | |
US2561323A (en) * | 1948-12-21 | 1951-07-17 | American Cyanamid Co | Method of preparing glutamic acid mono esters |
US2738363A (en) * | 1954-05-07 | 1956-03-13 | Parke Davis & Co | Process for the production of alpha-beta diaminopropionic acid esters |
US4154956A (en) * | 1973-12-21 | 1979-05-15 | Toray Industries, Inc. | Method for producing lysine ester |
JPH01165560A (ja) * | 1987-12-23 | 1989-06-29 | Tosoh Corp | アミノ酸のエステル化方法 |
JP2728883B2 (ja) * | 1988-05-18 | 1998-03-18 | 三井東圧化学株式会社 | アミノ酸メチルエスエル鉱酸塩の製造法 |
-
1989
- 1989-12-24 DE DE68919468T patent/DE68919468T2/de not_active Expired - Fee Related
- 1989-12-24 EP EP89123909A patent/EP0376230B1/en not_active Expired - Lifetime
- 1989-12-26 KR KR1019890019525A patent/KR940007413B1/ko not_active IP Right Cessation
- 1989-12-26 US US07/457,076 patent/US5113009A/en not_active Expired - Lifetime
- 1989-12-26 MX MX018904A patent/MX171684B/es unknown
- 1989-12-27 BR BR898906782A patent/BR8906782A/pt not_active IP Right Cessation
- 1989-12-27 CA CA002006737A patent/CA2006737C/en not_active Expired - Fee Related
- 1989-12-28 AU AU47325/89A patent/AU612921B2/en not_active Ceased
Also Published As
Publication number | Publication date |
---|---|
DE68919468T2 (de) | 1995-06-14 |
KR940007413B1 (ko) | 1994-08-18 |
AU4732589A (en) | 1990-07-05 |
AU612921B2 (en) | 1991-07-18 |
EP0376230A2 (en) | 1990-07-04 |
KR900009557A (ko) | 1990-07-04 |
CA2006737C (en) | 1998-03-31 |
EP0376230A3 (en) | 1991-04-03 |
US5113009A (en) | 1992-05-12 |
EP0376230B1 (en) | 1994-11-23 |
DE68919468D1 (de) | 1995-01-05 |
BR8906782A (pt) | 1990-09-18 |
CA2006737A1 (en) | 1990-06-27 |
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