DK0711764T3 - Fremgangsmåde til fremstilling af L-ascorbinsyre - Google Patents

Fremgangsmåde til fremstilling af L-ascorbinsyre

Info

Publication number
DK0711764T3
DK0711764T3 DK95117646T DK95117646T DK0711764T3 DK 0711764 T3 DK0711764 T3 DK 0711764T3 DK 95117646 T DK95117646 T DK 95117646T DK 95117646 T DK95117646 T DK 95117646T DK 0711764 T3 DK0711764 T3 DK 0711764T3
Authority
DK
Denmark
Prior art keywords
ascorbic acid
preparation
acid
ether
keto
Prior art date
Application number
DK95117646T
Other languages
Danish (da)
English (en)
Inventor
Haruomi Honda
Toru Yamano
Masayuki Yamashita
Original Assignee
Takeda Chemical Industries Ltd
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 Takeda Chemical Industries Ltd filed Critical Takeda Chemical Industries Ltd
Application granted granted Critical
Publication of DK0711764T3 publication Critical patent/DK0711764T3/da

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)
DK95117646T 1994-11-11 1995-11-09 Fremgangsmåde til fremstilling af L-ascorbinsyre DK0711764T3 (da)

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 (1)

Publication Number Publication Date
DK0711764T3 true DK0711764T3 (da) 1998-11-16

Family

ID=26528514

Family Applications (1)

Application Number Title Priority Date Filing Date
DK95117646T DK0711764T3 (da) 1994-11-11 1995-11-09 Fremgangsmåde til fremstilling af L-ascorbinsyre

Country Status (7)

Country Link
US (1) US5637734A (zh)
EP (1) EP0711764B1 (zh)
JP (1) JPH08188578A (zh)
CN (1) CN1055689C (zh)
AT (1) ATE167674T1 (zh)
DE (1) DE69503106T2 (zh)
DK (1) DK0711764T3 (zh)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
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
US6610863B2 (en) * 2000-12-22 2003-08-26 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)

* Cited by examiner, † Cited by third party
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 (zh) 1970-10-05 1973-05-18
EP0086324B1 (de) * 1982-02-12 1988-09-21 F. HOFFMANN-LA ROCHE & CO. Aktiengesellschaft Verfahren zur Herstellung von Ascorbinsäure
DE3484216D1 (de) 1983-06-28 1991-04-11 Genentech Inc Biosynthetische 2,5-diketogluconsaeurereduktase, verfahren, rekombinante zellen und expressionsvektoren fuer ihre herstellung und ihre verwendung zur bereitung von 2-keto-l-gulonsaeure.
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
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
DE3819045C2 (de) * 1987-06-08 1997-06-19 Takeda Chemical Industries Ltd Herstellung von L-Ascorbinsäure
EP0324261A1 (en) * 1988-01-06 1989-07-19 Pfizer Inc. Production of L-ascorbic acid from 2-keto-L-gulonic acid with an acid catalyst and a lipophilic surfactant having a low hydrophilic: lipophilic balance under substantially anhydrous conditions

Also Published As

Publication number Publication date
ATE167674T1 (de) 1998-07-15
EP0711764B1 (en) 1998-06-24
US5637734A (en) 1997-06-10
DE69503106T2 (de) 1999-02-25
EP0711764A1 (en) 1996-05-15
CN1055689C (zh) 2000-08-23
CN1129699A (zh) 1996-08-28
DE69503106D1 (de) 1998-07-30
JPH08188578A (ja) 1996-07-23

Similar Documents

Publication Publication Date Title
DK489686A (da) Fremgangsmaade til fremstilling af 2-keto-l-gulonsyre
DK0535940T3 (da) Fremgangsmåde til fremstilling af dihomo-gamma-linolensyre og et lipid indeholdende samme
DE59602236D1 (de) Verfahren zur Herstellung von Ascorbinsäure
DK0711764T3 (da) Fremgangsmåde til fremstilling af L-ascorbinsyre
DE69102254D1 (de) Produktion von Glycidylverbindungen.
IT8123719A0 (it) Procedimento per produrre etilenglicole mediante reazione di metanolo, di un perossido organico e di formaldeide.
FI913657A0 (fi) 4-amino-d4-steroider och deras anvaendning som 5a-reduktasinhibitorer.
DK90787A (da) Affyringsapparat til et optisk ledt, traadstyret missil.
DK0476442T3 (da) L-gulono-gamma-lactondehydrogenase
ATE110052T1 (de) Verfahren zur herstellung von organischen carbonaten.
DK580887D0 (da) Fremgangsmaade til fremstilling af styreneret hydroquinon
DK0483459T3 (da) Fremgangsmåde til fremstilling af phosphatidylcholinderivater
DK0812847T3 (da) Fremgangsmåde til fremstilling af 5-brom-2-fluorbenzenboronsyre
DK0576228T3 (da) Fremgangsmåde til fremstilling af beta-anomer-berigede 2-deoxy-2,2-difluor-D-ribofuranosyl-arylsulfonater
ZA946870B (en) Process for preparing 4,4'-dinitrostilbene-2,2'-disulphonic acid.
DK0662475T3 (da) Fremgangsmåde til fremstilling af 2-perfluoralkyl-3-oxazolin-5-on.
DE69101790D1 (de) Verfahren zur Herstellung von Vitamin A Aldehyd.
ATE158275T1 (de) Herstellung von pivaloylhydrazid
DE69109953D1 (de) Alfa-fluorocarbonsäurederivate als Zwischenprodukte zur Herstellung von Fungiziden.
DE59405089D1 (de) Verfahren zur Herstellung von 4,5-Difluorbenzaldehyden
DK589185A (da) Fremgangsmaade til fremstilling af monochlorhydroquinoner ved chlorering af hydroquinon
DK0406065T3 (da) Fremgangsmåde til fremstilling af pseudo-ionon
TH13553EX (th) กรรมวิธีที่ดีขึ้นสำหรับเตรียมเซฟาโลสพอรินส์
ES2152825A1 (es) Metodo general de obtencion de esteres del acido poli (-glutamico) mediante transesterificacion.
IT7824949A0 (it) Processo per la produzione dicomposti organici alifatici difunzionali.