CO4770883A1 - Procedimiento para preparar acido l-ascorbico - Google Patents
Procedimiento para preparar acido l-ascorbicoInfo
- Publication number
- CO4770883A1 CO4770883A1 CO98045322A CO98045322A CO4770883A1 CO 4770883 A1 CO4770883 A1 CO 4770883A1 CO 98045322 A CO98045322 A CO 98045322A CO 98045322 A CO98045322 A CO 98045322A CO 4770883 A1 CO4770883 A1 CO 4770883A1
- Authority
- CO
- Colombia
- Prior art keywords
- acid
- preparing
- procedure
- process according
- ascorbic acid
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D307/00—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom
- C07D307/02—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings
- C07D307/34—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members
- C07D307/56—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
- C07D307/62—Three oxygen atoms, e.g. ascorbic acid
Abstract
Procedimiento para preparar ácido L-ascórbico, caracterizado porque se hace reaccionar el ácido 2-ceto-L-gulónico con un ácido mineral concentrado a una temperatura comprendida entre 40 y 80°C. Procedimiento según la reivindicación 1, caracterizado porque la reacción se lleva a cabo a temperaturas comprendidas entre 50 y 70°C. Procedimiento según la reivindicación 1 ó 2, caracterizado porque la relación entre el ácido 2-ceto-L-gulónico y el ácido mineral es de 1:3. Procedimiento según una de las reivindicaciones 1 a 3, caracterizado porque en calidad de ácido mineral se emplea el ácido clorhídrico concentrado. Procedimiento según una de las reivindicaciones 1 a 4, caracterizado porque se lleva una mezcla compuesta por ácido 2-ceto-L-gulónico y ácido mineral concentrado a la temperatura de reacción deseada.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19734086A DE19734086C1 (de) | 1997-08-07 | 1997-08-07 | Verfahren zur Herstellung von L-Ascorbinsäure |
Publications (1)
Publication Number | Publication Date |
---|---|
CO4770883A1 true CO4770883A1 (es) | 1999-04-30 |
Family
ID=7838185
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CO98045322A CO4770883A1 (es) | 1997-08-07 | 1998-08-06 | Procedimiento para preparar acido l-ascorbico |
Country Status (12)
Country | Link |
---|---|
EP (1) | EP1001952A2 (es) |
JP (1) | JP2001512722A (es) |
KR (1) | KR20010022595A (es) |
CN (1) | CN1265655A (es) |
AR (1) | AR010938A1 (es) |
AU (1) | AU9156298A (es) |
BR (1) | BR9811855A (es) |
CA (1) | CA2299364A1 (es) |
CO (1) | CO4770883A1 (es) |
DE (1) | DE19734086C1 (es) |
ID (1) | ID25547A (es) |
WO (1) | WO1999007691A2 (es) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19904821C1 (de) * | 1999-02-05 | 2000-07-06 | Merck Patent Gmbh | Verfahren zur Herstellung von L-Ascobinsäure |
DE19919203A1 (de) | 1999-04-28 | 2000-11-02 | Basf Ag | Verfahren zur Herstellung von L-Ascorbinsäure |
DE19954511A1 (de) | 1999-11-12 | 2001-05-17 | Basf Ag | Verfahren zur Herstellung von Alkalisalzen der L-Ascorbinsäure |
DE10022518A1 (de) | 2000-05-10 | 2001-11-15 | Basf Ag | Verfahren zur Herstellung von L-Ascorbinsäure durch Lactonisierung von 2-Keto-L-gulonsäure oder 2-Keto-L-gulonsäureestern |
WO2002051826A1 (en) | 2000-12-22 | 2002-07-04 | Eastman Chemical Company | Continuous process for producing l-ascorbic acid |
US6864376B2 (en) | 2000-12-22 | 2005-03-08 | Eastman Chemical Company | Process for producing ascorbic acid |
IL158299A0 (en) * | 2001-04-10 | 2004-05-12 | Danisco Usa Inc | Processes for preparing a carbohydrate polymer |
US6740762B2 (en) | 2001-08-24 | 2004-05-25 | Eastman Chemical Company | Process for ascorbic acids using alkaline earth silicate catalysts |
US6716997B1 (en) | 2001-10-09 | 2004-04-06 | Eastman Chemical Company | Systems and methods for generation of ascorbic acid with reduced color |
CN111087373A (zh) * | 2019-12-29 | 2020-05-01 | 安徽丰原发酵技术工程研究有限公司 | 一种酸法制备维生素c的方法 |
CN111018815A (zh) * | 2019-12-29 | 2020-04-17 | 安徽丰原发酵技术工程研究有限公司 | 一种通过溶剂萃取提高盐酸浓度制备维生素c的方法 |
CN114369075B (zh) * | 2022-02-14 | 2023-09-29 | 河北乐开节能科技股份有限公司 | 利用2-酮基-l-古龙酸的水溶液一步制备vc结晶的方法 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2462251A (en) * | 1945-05-16 | 1949-02-22 | Merck & Co Inc | Process for preparing ascorbic acids |
DD141832A1 (de) * | 1978-10-31 | 1980-05-21 | Joachim Schmidt | Verfahren und vorrichtung zur herstellung von l-ascorbinsaeure |
CN86105960A (zh) * | 1985-08-09 | 1987-05-13 | 鲁布里佐尔公司 | 在基本无水条件下从2-酮-l-古洛糖酸制备l-抗坏血酸 |
DE3819045C2 (de) * | 1987-06-08 | 1997-06-19 | Takeda Chemical Industries Ltd | Herstellung von L-Ascorbinsäure |
-
1997
- 1997-08-07 DE DE19734086A patent/DE19734086C1/de not_active Expired - Fee Related
-
1998
- 1998-07-24 JP JP2000506195A patent/JP2001512722A/ja active Pending
- 1998-07-24 CN CN98807955A patent/CN1265655A/zh active Pending
- 1998-07-24 CA CA002299364A patent/CA2299364A1/en not_active Abandoned
- 1998-07-24 KR KR1020007001187A patent/KR20010022595A/ko not_active Application Discontinuation
- 1998-07-24 ID IDW20000174A patent/ID25547A/id unknown
- 1998-07-24 EP EP98943779A patent/EP1001952A2/de not_active Withdrawn
- 1998-07-24 WO PCT/EP1998/004649 patent/WO1999007691A2/de not_active Application Discontinuation
- 1998-07-24 AU AU91562/98A patent/AU9156298A/en not_active Abandoned
- 1998-07-24 BR BR9811855-2A patent/BR9811855A/pt not_active Application Discontinuation
- 1998-08-06 CO CO98045322A patent/CO4770883A1/es unknown
- 1998-08-07 AR ARP980103913A patent/AR010938A1/es unknown
Also Published As
Publication number | Publication date |
---|---|
BR9811855A (pt) | 2000-08-15 |
ID25547A (id) | 2000-10-12 |
WO1999007691A3 (de) | 1999-04-08 |
WO1999007691A2 (de) | 1999-02-18 |
AU9156298A (en) | 1999-03-01 |
CN1265655A (zh) | 2000-09-06 |
KR20010022595A (ko) | 2001-03-26 |
DE19734086C1 (de) | 1998-08-13 |
AR010938A1 (es) | 2000-07-12 |
EP1001952A2 (de) | 2000-05-24 |
JP2001512722A (ja) | 2001-08-28 |
CA2299364A1 (en) | 1999-02-18 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CO4770883A1 (es) | Procedimiento para preparar acido l-ascorbico | |
DK0464095T3 (da) | Hidtil ukendt hypertermostabil alfa-amylase | |
UA7080A1 (uk) | Спосіб одержання кристалічного торасеміду | |
ES2159919T3 (es) | Procedimiento para la preparacion de compuestos de tipo ceramidas. | |
ES2125655T3 (es) | Produccion de granulos de tensioactivo anionico por neutralizacion in situ. | |
ES2010679B3 (es) | Productos de transformacion y su aplicacion como catalizadores en la obtencion de plasticos de base de isocianato. | |
MX9303073A (es) | Piedras abrasivas sinteticas y metodo para fabricar las mismas. | |
DE3751478T2 (de) | Herstellungsverfahren einer viskositätsstabilen antisäurezusammensetzung. | |
ES526406A0 (es) | Procedimiento para producir -amilasas termoestables por cultivo de microorganismos a altas temperaturas | |
GB1396449A (en) | Low expansion ceramic or glass-ceramic articles | |
ES2168515T3 (es) | Metodo para producir borato de calcio. | |
ES2187684T3 (es) | Procedimiento para preparar productos intermedios para la sintesis de agentes antifungicos. | |
AU576107B2 (en) | Isohexide-nucleoside | |
DK1187805T3 (da) | Fremgangsmåde til fremstilling af R-(-)-carnitin ud fra S-(-)-chlorravsyre eller ud fra et derivat deraf | |
AR247208A1 (es) | Procedimiento para obtener 3n-oxido de 2,4-diamino-6-piperidinil-pirimidina. | |
CA2215585A1 (en) | Practical synthesis of urea derivatives | |
PT94127A (pt) | Processo para a producao de 2-oxindol-1-carboxamidas | |
ES2075110T3 (es) | Un metodo para producir 3'-(1h-tetrazol-5-il) oxanilato de butilo. | |
EP0249359A3 (en) | Process for production of fatty acids | |
BR8607101A (pt) | Processo para a producao de cloro-tolonila | |
DK0665815T3 (da) | Amorft alkalimetalsilicat, fremgangsmåde og anvendelser | |
DK544887A (da) | Fremgangsmaade til fremstilling af betahydroxysmoersyre og dennes salte | |
JPS6426528A (en) | Production of xylylene glycol | |
PT1104397E (pt) | Processo para a preparacao de ester de etilo do acido atropico | |
CO5031315A1 (es) | Metodo de purificacion 1,3,5-triisopropilbenceno |