ID25547A - L-ASKORBAT ACID MAKING PROCESS - Google Patents

L-ASKORBAT ACID MAKING PROCESS

Info

Publication number
ID25547A
ID25547A IDW20000174A ID20000174A ID25547A ID 25547 A ID25547 A ID 25547A ID W20000174 A IDW20000174 A ID W20000174A ID 20000174 A ID20000174 A ID 20000174A ID 25547 A ID25547 A ID 25547A
Authority
ID
Indonesia
Prior art keywords
askorbat
making process
acid making
acid
making
Prior art date
Application number
IDW20000174A
Other languages
Indonesian (id)
Inventor
Ulrich Fechtel
Klaus Beschmann
Wolfgang Heinz
Walter Kuhn
Original Assignee
Merck Patent Gmbh
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 Merck Patent Gmbh filed Critical Merck Patent Gmbh
Publication of ID25547A publication Critical patent/ID25547A/en

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)
IDW20000174A 1997-08-07 1998-07-24 L-ASKORBAT ACID MAKING PROCESS ID25547A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19734086A DE19734086C1 (en) 1997-08-07 1997-08-07 L-ascorbic acid preparation

Publications (1)

Publication Number Publication Date
ID25547A true ID25547A (en) 2000-10-12

Family

ID=7838185

Family Applications (1)

Application Number Title Priority Date Filing Date
IDW20000174A ID25547A (en) 1997-08-07 1998-07-24 L-ASKORBAT ACID MAKING PROCESS

Country Status (12)

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

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19904821C1 (en) * 1999-02-05 2000-07-06 Merck Patent Gmbh Preparation of L-ascorbic acid from 2-keto- or 2,3-4,6-diacetone-2-keto-L-gulonic acid
DE19919203A1 (en) 1999-04-28 2000-11-02 Basf Ag Process for the preparation of L-ascorbic acid
DE19954511A1 (en) 1999-11-12 2001-05-17 Basf Ag Process for the preparation of alkali salts of L-ascorbic acid
DE10022518A1 (en) 2000-05-10 2001-11-15 Basf Ag Preparation of L-ascorbic acids by reacting 2-keto-L-gulonic acids or melt of 2-keto-L-gulonic acid alkyl esters under acid catalysis using water-miscible solvent(s)
WO2002051827A1 (en) 2000-12-22 2002-07-04 Eastman Chemical Company Process for producing ascorbic acid in the presence of a sulfit
CA2432173A1 (en) 2000-12-22 2002-07-04 Eastman Chemical Company Continuous process for producing l-ascorbic acid
PL373506A1 (en) * 2001-04-10 2005-09-05 Danisco Usa Polymerization of mono and disaccharides with monocarboxylic acids and lactones
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 (en) * 2019-12-29 2020-05-01 安徽丰原发酵技术工程研究有限公司 Method for preparing vitamin C by acid method
CN111018815A (en) * 2019-12-29 2020-04-17 安徽丰原发酵技术工程研究有限公司 Method for preparing vitamin C by increasing concentration of hydrochloric acid through solvent extraction
CN114369075B (en) * 2022-02-14 2023-09-29 河北乐开节能科技股份有限公司 Method for preparing VC crystal by using aqueous solution of 2-keto-L-gulonic acid in one step

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 (en) * 1978-10-31 1980-05-21 Joachim Schmidt METHOD AND DEVICE FOR PREPARING L-ASCORBIN ACID
CN86105960A (en) * 1985-08-09 1987-05-13 鲁布里佐尔公司 Under substantially anhydrous conditions, prepare the L-xitix from 2-ketone-L-gulonic acid
DE3819045C2 (en) * 1987-06-08 1997-06-19 Takeda Chemical Industries Ltd Production of L-ascorbic acid

Also Published As

Publication number Publication date
JP2001512722A (en) 2001-08-28
KR20010022595A (en) 2001-03-26
DE19734086C1 (en) 1998-08-13
AR010938A1 (en) 2000-07-12
BR9811855A (en) 2000-08-15
CN1265655A (en) 2000-09-06
WO1999007691A2 (en) 1999-02-18
CO4770883A1 (en) 1999-04-30
AU9156298A (en) 1999-03-01
WO1999007691A3 (en) 1999-04-08
EP1001952A2 (en) 2000-05-24
CA2299364A1 (en) 1999-02-18

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