DE69503106T2 - Verfahren zur Herstellung von L-Ascorbinsäure - Google Patents
Verfahren zur Herstellung von L-AscorbinsäureInfo
- Publication number
- DE69503106T2 DE69503106T2 DE69503106T DE69503106T DE69503106T2 DE 69503106 T2 DE69503106 T2 DE 69503106T2 DE 69503106 T DE69503106 T DE 69503106T DE 69503106 T DE69503106 T DE 69503106T DE 69503106 T2 DE69503106 T2 DE 69503106T2
- Authority
- DE
- Germany
- Prior art keywords
- ascorbic acid
- preparation
- acid
- ether
- keto
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Furan Compounds (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP27731494 | 1994-11-11 | ||
JP7228887A JPH08188578A (ja) | 1994-11-11 | 1995-09-06 | L−アスコルビン酸の製造方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69503106D1 DE69503106D1 (de) | 1998-07-30 |
DE69503106T2 true DE69503106T2 (de) | 1999-02-25 |
Family
ID=26528514
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69503106T Expired - Lifetime DE69503106T2 (de) | 1994-11-11 | 1995-11-09 | Verfahren zur Herstellung von L-Ascorbinsäure |
Country Status (7)
Country | Link |
---|---|
US (1) | US5637734A (de) |
EP (1) | EP0711764B1 (de) |
JP (1) | JPH08188578A (de) |
CN (1) | CN1055689C (de) |
AT (1) | ATE167674T1 (de) |
DE (1) | DE69503106T2 (de) |
DK (1) | DK0711764T3 (de) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19547073C1 (de) * | 1995-12-16 | 1996-11-14 | Merck Patent Gmbh | Verfahren zur Herstellung von Ascorbinsäure |
US5846683A (en) * | 1996-04-08 | 1998-12-08 | Sharp Kabushiki Kaisha | Toner producing method using recycled extra-fine toner particles |
WO2002051826A1 (en) * | 2000-12-22 | 2002-07-04 | Eastman Chemical Company | Continuous process for producing l-ascorbic acid |
US6476239B1 (en) * | 2002-02-12 | 2002-11-05 | Eastman Chemical Company | Process for the preparation of ascorbic acid |
US6872314B2 (en) * | 2003-08-29 | 2005-03-29 | Eastman Chemical Company | Dewatering process |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB466548A (en) * | 1935-11-26 | 1937-05-31 | Tadeus Reichstein | Process for the manufacture of laevo-ascorbic acid (vitamin-c) |
US2462251A (en) | 1945-05-16 | 1949-02-22 | Merck & Co Inc | Process for preparing ascorbic acids |
JPS4815931B1 (de) | 1970-10-05 | 1973-05-18 | ||
DE3378049D1 (en) * | 1982-02-12 | 1988-10-27 | Hoffmann La Roche | Process for preparing ascorbic acid |
IL89242A (en) | 1983-06-28 | 1990-08-31 | Genentech Inc | Process for producing a recombinant microorganism capable of converting glucose into 2-keto-l-gulonic acid,the microorganism obtained by said process and its use in converting glucose into 2-keto-l-gulonic acid |
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 |
JP2667201B2 (ja) | 1987-06-08 | 1997-10-27 | 武田薬品工業株式会社 | L−アスコルビン酸の製造法 |
EP0324261A1 (de) * | 1988-01-06 | 1989-07-19 | Pfizer Inc. | Herstellung von Ascorbinsäure aus 2-Keto-L-gulonsäure unter im wesentlichen wasserfreien Bedingungen in Gegenwart eines sauren Katalysators und eines lipophilen grenzflächenaktiven Mittels mit einer niedrigen hydrophilen:lipophilen Gleichgewichtswert |
-
1995
- 1995-09-06 JP JP7228887A patent/JPH08188578A/ja active Pending
- 1995-11-03 US US08/553,027 patent/US5637734A/en not_active Expired - Fee Related
- 1995-11-09 DE DE69503106T patent/DE69503106T2/de not_active Expired - Lifetime
- 1995-11-09 AT AT95117646T patent/ATE167674T1/de not_active IP Right Cessation
- 1995-11-09 DK DK95117646T patent/DK0711764T3/da active
- 1995-11-09 EP EP95117646A patent/EP0711764B1/de not_active Expired - Lifetime
- 1995-11-10 CN CN95119217A patent/CN1055689C/zh not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
EP0711764A1 (de) | 1996-05-15 |
ATE167674T1 (de) | 1998-07-15 |
EP0711764B1 (de) | 1998-06-24 |
CN1055689C (zh) | 2000-08-23 |
US5637734A (en) | 1997-06-10 |
DE69503106D1 (de) | 1998-07-30 |
CN1129699A (zh) | 1996-08-28 |
DK0711764T3 (da) | 1998-11-16 |
JPH08188578A (ja) | 1996-07-23 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8327 | Change in the person/name/address of the patent owner |
Owner name: BASF AG, 67063 LUDWIGSHAFEN, DE |
|
8330 | Complete renunciation |