AU9156298A - Process for preparing l-ascorbic acid - Google Patents

Process for preparing l-ascorbic acid

Info

Publication number: AU9156298A
Authority: AU; Australia
Prior art keywords: preparing; ascorbic acid; ascorbic; acid
Prior art date: 1997-08-07
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

AU91562/98A

Inventor

Klaus Beschmann

Ulrich Fechtel

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

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.)

1997-08-07

Filing date

1998-07-24

Publication date

1999-03-01

1998-07-24 Application filed by Merck Patent GmbH filed Critical Merck Patent GmbH

1999-03-01 Publication of AU9156298A publication Critical patent/AU9156298A/en

Status 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

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)

AU91562/98A 1997-08-07 1998-07-24 Process for preparing l-ascorbic acid Abandoned AU9156298A (en)

Applications Claiming Priority (3)

Application Number	Priority Date	Filing Date	Title
DE19734086A DE19734086C1 (en)	1997-08-07	1997-08-07	L-ascorbic acid preparation
DE19734086		1997-08-07
PCT/EP1998/004649 WO1999007691A2 (en)	1997-08-07	1998-07-24	Process for preparing l-ascorbic acid

Publications (1)

Publication Number	Publication Date
AU9156298A true AU9156298A (en)	1999-03-01

Family

ID=7838185

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
AU91562/98A Abandoned AU9156298A (en)	1997-08-07	1998-07-24	Process for preparing l-ascorbic acid

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

1997
- 1997-08-07 DE DE19734086A patent/DE19734086C1/en not_active Expired - Fee Related
1998
- 1998-07-24 EP EP98943779A patent/EP1001952A2/en not_active Withdrawn
- 1998-07-24 CN CN98807955A patent/CN1265655A/en active Pending
- 1998-07-24 ID IDW20000174A patent/ID25547A/en unknown
- 1998-07-24 AU AU91562/98A patent/AU9156298A/en not_active Abandoned
- 1998-07-24 BR BR9811855-2A patent/BR9811855A/en not_active Application Discontinuation
- 1998-07-24 WO PCT/EP1998/004649 patent/WO1999007691A2/en not_active Application Discontinuation
- 1998-07-24 KR KR1020007001187A patent/KR20010022595A/en not_active Application Discontinuation
- 1998-07-24 JP JP2000506195A patent/JP2001512722A/en active Pending
- 1998-07-24 CA CA002299364A patent/CA2299364A1/en not_active Abandoned
- 1998-08-06 CO CO98045322A patent/CO4770883A1/en unknown
- 1998-08-07 AR ARP980103913A patent/AR010938A1/en unknown

Also Published As

Publication number	Publication date
JP2001512722A (en)	2001-08-28
KR20010022595A (en)	2001-03-26
DE19734086C1 (en)	1998-08-13
ID25547A (en)	2000-10-12
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
WO1999007691A3 (en)	1999-04-08
EP1001952A2 (en)	2000-05-24
CA2299364A1 (en)	1999-02-18

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Legal Events

Date	Code	Title	Description
2000-04-20	MK6	Application lapsed section 142(2)(f)/reg. 8.3(3) - pct applic. not entering national phase