CA2299364A1 - Process for the preparation of l-ascorbic acid - Google Patents

Process for the preparation of l-ascorbic acid Download PDF

Info

Publication number
CA2299364A1
CA2299364A1 CA002299364A CA2299364A CA2299364A1 CA 2299364 A1 CA2299364 A1 CA 2299364A1 CA 002299364 A CA002299364 A CA 002299364A CA 2299364 A CA2299364 A CA 2299364A CA 2299364 A1 CA2299364 A1 CA 2299364A1
Authority
CA
Canada
Prior art keywords
acid
keto
gulonic
ascorbic acid
reaction
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.)
Abandoned
Application number
CA002299364A
Other languages
English (en)
French (fr)
Inventor
Ulrich Fechtel
Klaus Beschmann
Wolfgang Heinz
Walter Kuhn
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Merck Patent GmbH
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of CA2299364A1 publication Critical patent/CA2299364A1/en
Abandoned legal-status Critical Current

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
CA002299364A 1997-08-07 1998-07-24 Process for the preparation of l-ascorbic acid Abandoned CA2299364A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19734086.5 1997-08-07
DE19734086A DE19734086C1 (de) 1997-08-07 1997-08-07 Verfahren zur Herstellung von L-Ascorbinsäure
PCT/EP1998/004649 WO1999007691A2 (de) 1997-08-07 1998-07-24 Verfahren zur herstellung von l-ascorbinsäure

Publications (1)

Publication Number Publication Date
CA2299364A1 true CA2299364A1 (en) 1999-02-18

Family

ID=7838185

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002299364A Abandoned CA2299364A1 (en) 1997-08-07 1998-07-24 Process for the preparation of l-ascorbic acid

Country Status (12)

Country Link
EP (1) EP1001952A2 (de)
JP (1) JP2001512722A (de)
KR (1) KR20010022595A (de)
CN (1) CN1265655A (de)
AR (1) AR010938A1 (de)
AU (1) AU9156298A (de)
BR (1) BR9811855A (de)
CA (1) CA2299364A1 (de)
CO (1) CO4770883A1 (de)
DE (1) DE19734086C1 (de)
ID (1) ID25547A (de)
WO (1) WO1999007691A2 (de)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

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
CO4770883A1 (es) 1999-04-30
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

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Legal Events

Date Code Title Description
FZDE Discontinued