BR9811855A - Processo para preparação de ácido l-ascórbico - Google Patents

Processo para preparação de ácido l-ascórbico

Info

Publication number
BR9811855A
BR9811855A BR9811855-2A BR9811855A BR9811855A BR 9811855 A BR9811855 A BR 9811855A BR 9811855 A BR9811855 A BR 9811855A BR 9811855 A BR9811855 A BR 9811855A
Authority
BR
Brazil
Prior art keywords
ascorbic acid
preparing
acid
preparation
ascorbic
Prior art date
Application number
BR9811855-2A
Other languages
English (en)
Portuguese (pt)
Inventor
Ulrich Fechtel
Klaus Beschmann
Wolfgang Heinzig
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 BR9811855A publication Critical patent/BR9811855A/pt

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)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
BR9811855-2A 1997-08-07 1998-07-24 Processo para preparação de ácido l-ascórbico BR9811855A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19734086A DE19734086C1 (de) 1997-08-07 1997-08-07 Verfahren zur Herstellung von L-Ascorbinsäure
PCT/EP1998/004649 WO1999007691A2 (fr) 1997-08-07 1998-07-24 Procede de preparation d'acide l-ascorbique

Publications (1)

Publication Number Publication Date
BR9811855A true BR9811855A (pt) 2000-08-15

Family

ID=7838185

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9811855-2A BR9811855A (pt) 1997-08-07 1998-07-24 Processo para preparação de ácido l-ascórbico

Country Status (12)

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

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 (fr) 2000-12-22 2002-07-04 Eastman Chemical Company Procede en continu de production d'acide l-ascorbique
JP2004516319A (ja) 2000-12-22 2004-06-03 イーストマン ケミカル カンパニー 亜硫酸塩の存在下でのアスコルビン酸の製造方法
NZ528677A (en) * 2001-04-10 2006-11-30 Danisco Usa Inc 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
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
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
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
JP2001512722A (ja) 2001-08-28
ID25547A (id) 2000-10-12
KR20010022595A (ko) 2001-03-26
WO1999007691A2 (fr) 1999-02-18
DE19734086C1 (de) 1998-08-13
AR010938A1 (es) 2000-07-12
CA2299364A1 (fr) 1999-02-18
AU9156298A (en) 1999-03-01
EP1001952A2 (fr) 2000-05-24
WO1999007691A3 (fr) 1999-04-08
CO4770883A1 (es) 1999-04-30
CN1265655A (zh) 2000-09-06

Similar Documents

Publication Publication Date Title
BR9802011A (pt) Processo para a produção de vanilina.
BR0009411A (pt) Composto de anilina substituìda, e, processo para a preparação e uso de compostos
BR9811855A (pt) Processo para preparação de ácido l-ascórbico
KR960702830A (ko) 방사선 보호제로서의 N-알킬티오 폴리아민 유도체(N-Alkylthio polyaine derivatives as radioprotective agents)
ATE288900T1 (de) Substituierte benzoylcyclohexandione
BRPI9814894A (pt) processo para a preparação de ácidos 8-metóxi-quinolonocarboxílicos.
BR0100982A (pt) Processo para a preparação de derivados deresorcinol
BR9807988A (pt) Processo para a preparação de um composto, e, composto.
BR0013751A (pt) Processo para produção de derivados de ácido naftiridina-3-carboxìlico
PT1206452E (pt) Processo de preparacao de compostos benzoper-hidroisoindole
BR9909260A (pt) Processo para o preparo de (r)-alfa-(2,3-dimetóxifenil)-1-[2-(4-fluoro-fenil)etil]-4-pi peridinametanol
BR9712773A (pt) Processo para a sìntese de benzotiofenos
BR9810481A (pt) Processo para preparação de 1h-indol-3-glioxamidas 4-substituìdas.
BR9811579A (pt) Processo para preparação de ácidos 3-ciano-2,4-dialógeno-5-fluorobenzóicos
BR9807785A (pt) Processo para a preparação do composto, e, composto
BRPI0000967B8 (pt) processos para preparação de compostos secretagogos de hormônio de crescimento
BR9902051A (pt) Oxidação seletiva e a preparação de compostos aromáticos contendo grupos hidroxila.
BR9813897A (pt) Derivados de bifenila como farmacêuticos
BR0000184A (pt) Processo para a preparação de compostos heterocìclicos
BR9809439A (pt) Processos para preparação de benzotiofenos
ATE242763T1 (de) Methoximinophenylessigsäureamide
IT1303824B1 (it) Procedimento per la produzione di caprolattame di elevata purezza.
BR9913401A (pt) Processo para a preparação de 2hidróxi-6-trifluorometilpiridina
BR9808047B1 (pt) processo para a preparação de 2-nitroguanidinas 1,3-dissubstituìdas.
BR9907340A (pt) Ciclo-heptenos substituìdos, e processo para a produção de um composto

Legal Events

Date Code Title Description
FA10 Dismissal: dismissal - article 33 of industrial property law
B11Y Definitive dismissal - extension of time limit for request of examination expired [chapter 11.1.1 patent gazette]