BR0005323A - Processo para preparar sais de metal alcalino de ácido l-ascórbico - Google Patents
Processo para preparar sais de metal alcalino de ácido l-ascórbicoInfo
- Publication number
- BR0005323A BR0005323A BR0005323-6A BR0005323A BR0005323A BR 0005323 A BR0005323 A BR 0005323A BR 0005323 A BR0005323 A BR 0005323A BR 0005323 A BR0005323 A BR 0005323A
- Authority
- BR
- Brazil
- Prior art keywords
- alkali metal
- metal salts
- acid
- ascorbic acid
- preparing alkali
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/14—Fractional distillation or use of a fractionation or rectification column
- B01D3/141—Fractional distillation or use of a fractionation or rectification column where at least one distillation column contains at least one dividing wall
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/14—Fractional distillation or use of a fractionation or rectification column
- B01D3/32—Other features of fractionating columns ; Constructional details of fractionating columns not provided for in groups B01D3/16 - B01D3/30
- B01D3/322—Reboiler specifications
-
- 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)
- Chemical Kinetics & Catalysis (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Furan Compounds (AREA)
Abstract
"PROCESSO PARA PREPARAR SAIS DE METAL ALCALINO DE áCIDO-ASCóRBICO" Um processo para preparar sais de metal alcalino do ácido L-ascórbico que compreende as seguintes etapas: a) esterificar o ácido 2-ceto-L-gulónico ou o ácido diacetona-2-ceto-L-gulónico com um álcool C~ 1~-C~ 10~ na presença de um catalisador ácido, b) rearranjar o éster de alquila C~ 1~-C~ 10~ do ácido 2-ceto-L-gulónico na presença de um alcóxido C~ 1~-C~ 10~ de metal alcalino, que compreende realizar cada uma das etapas de processo a) e b) continuamente.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19954511A DE19954511A1 (de) | 1999-11-12 | 1999-11-12 | Verfahren zur Herstellung von Alkalisalzen der L-Ascorbinsäure |
Publications (1)
Publication Number | Publication Date |
---|---|
BR0005323A true BR0005323A (pt) | 2001-07-03 |
Family
ID=7928841
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BR0005323-6A BR0005323A (pt) | 1999-11-12 | 2000-11-09 | Processo para preparar sais de metal alcalino de ácido l-ascórbico |
Country Status (6)
Country | Link |
---|---|
US (1) | US6274744B1 (pt) |
EP (1) | EP1099697A1 (pt) |
JP (1) | JP2001151765A (pt) |
CN (1) | CN1247563C (pt) |
BR (1) | BR0005323A (pt) |
DE (1) | DE19954511A1 (pt) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ATE322499T1 (de) * | 2002-11-11 | 2006-04-15 | Verfahren zur herstellung von 2-keto-l-gulonsäure-c-4 c-10 /sb -alkylestern | |
KR101191122B1 (ko) * | 2009-01-20 | 2012-10-15 | 주식회사 엘지화학 | 고순도 노르말 부탄올 생산용 분리벽형 증류탑, 및 노르말 부탄올 증류방법 |
BR112012013158A2 (pt) * | 2009-12-02 | 2016-03-01 | Univ Michigan State | método de produção de um éster alquílico de um ácido carboxílico e método para o isolamento de succinato de dietila |
CN101774988B (zh) * | 2010-01-19 | 2012-07-04 | 江苏工业学院 | 固相双功能催化剂催化合成维生素c的方法 |
RU2702095C1 (ru) * | 2018-12-25 | 2019-10-04 | Акционерное общество "Радиевый институт имени В.Г. Хлопина" | Способ получения монофазных солей актинидов и устройство для их получения |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2185383A (en) | 1937-04-28 | 1940-01-02 | Charles Pflzer & Company | Preparation of levo-ascorbic acid |
CH490368A (fr) * | 1968-02-01 | 1970-05-15 | Politechnika Slaska Im Wincent | Procédé de production de vitamine C |
JPS58177986A (ja) | 1982-04-09 | 1983-10-18 | Shionogi & Co Ltd | L−アスコルビン酸の製造方法 |
DE3314395A1 (de) | 1983-04-21 | 1984-10-25 | Basf Ag, 6700 Ludwigshafen | Verfahren zur durchfuehrung von chemischen reaktionen und gleichzeitiger destillativer zerlegung eines produktgemisches in mehrere fraktionen mittels einer destillationskolonne |
ATE40356T1 (de) * | 1983-08-05 | 1989-02-15 | Hoffmann La Roche | Verfahren zur herstellung von kohlenhydraten. |
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 |
ATE138904T1 (de) | 1989-01-17 | 1996-06-15 | Davy Process Techn Ltd | Kontinuierliches verfahren zur herstellung von carbonsäureestern |
FR2648136B1 (fr) * | 1989-06-12 | 1994-06-17 | Rhone Poulenc Sante | Procede de preparation de l'acide ascorbique |
EP0671405A1 (de) * | 1994-01-18 | 1995-09-13 | F. Hoffmann-La Roche Ag | Herstellung von 2-Keto-L-gulonsäureestern |
JP3135187B2 (ja) | 1994-05-19 | 2001-02-13 | 日本カーボン株式会社 | イオン注入部材用の炭素材料およびその製造方法 |
DE19547073C1 (de) | 1995-12-16 | 1996-11-14 | Merck Patent Gmbh | Verfahren zur Herstellung von Ascorbinsäure |
DE19734086C1 (de) | 1997-08-07 | 1998-08-13 | Merck Patent Gmbh | Verfahren zur Herstellung von L-Ascorbinsäure |
-
1999
- 1999-11-12 DE DE19954511A patent/DE19954511A1/de not_active Withdrawn
-
2000
- 2000-10-10 EP EP00121999A patent/EP1099697A1/de not_active Withdrawn
- 2000-10-17 US US09/688,882 patent/US6274744B1/en not_active Expired - Fee Related
- 2000-11-09 JP JP2000342489A patent/JP2001151765A/ja not_active Withdrawn
- 2000-11-09 BR BR0005323-6A patent/BR0005323A/pt not_active IP Right Cessation
- 2000-11-10 CN CNB001323830A patent/CN1247563C/zh not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
DE19954511A1 (de) | 2001-05-17 |
JP2001151765A (ja) | 2001-06-05 |
US6274744B1 (en) | 2001-08-14 |
EP1099697A1 (de) | 2001-05-16 |
CN1296006A (zh) | 2001-05-23 |
CN1247563C (zh) | 2006-03-29 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
BR9911431A (pt) | Processo para produção de uma solução aquosa de ácido monoéster peroxicarboxìlico | |
BR0002891A (pt) | Processo para a preparação de ácido (met) acrìlico | |
CO4810331A1 (es) | Proceso para la preparacion de esteres en presencia de un catalizador | |
ES2137504T3 (es) | Procedimiento mejorado para la preparacion de polialuminosilicatos solubles en agua. | |
ES2100954T3 (es) | Un metodo para hacer un gel biocompatible insoluble al agua y gel obtenido por dicho metodo. | |
BR0007224A (pt) | Processo para a transesterificação de gorduras e/ou óleo de origem biológica por meio de alcoólise | |
BR0010555A (pt) | Inibidores de neuraminidases | |
ES2189768T3 (es) | Sintesis regioselectiva de derivados de rapamicina. | |
BR0307236A (pt) | Processo para fabricação de compostos orgânicos | |
BRPI9814894A (pt) | processo para a preparação de ácidos 8-metóxi-quinolonocarboxílicos. | |
BR0005323A (pt) | Processo para preparar sais de metal alcalino de ácido l-ascórbico | |
BR0114437A (pt) | Derivados de acido propiÈnico | |
PT1385850E (pt) | Novo processo para a preparacao de oxabispidinas | |
BR0109586A (pt) | Composições contendo policarbonato | |
BRPI0108990B8 (pt) | processo para preparação de derivados de pirimidona com atividade antifungos | |
BR0011996A (pt) | Preparação de piperidin-4-onas substituìdas | |
ES2171706T3 (es) | Procedimiento para la obtencion de sales substituidas del acido 4,4'-diaminoestilben-2,2'-disulfonico. | |
BR0009518A (pt) | Processo para a preparação de um éster do ácido 2-hidroxi-4-metiltiobutìrico | |
BR0007982A (pt) | Processo para a preparação de um composto, e,composto | |
BR0116835A (pt) | Composição e processo | |
AR027368A1 (es) | Procedimiento para la preparacion de esteres del acido hidroxi-4-metil-tiobutirico | |
BR9903561A (pt) | Processo para transesterificação de ésteres alfa-cetocarboxìlicos | |
BR0111403A (pt) | Composições que contêm policarbonato | |
BR9916648A (pt) | Processo para preparar ésteres glioxìlicos ou seus hidratos | |
BR9805589A (pt) | Processo para a produção de ésteres de alfa-tocoferol |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
B08F | Application fees: application dismissed [chapter 8.6 patent gazette] |
Free format text: REFERENTE A 7A E 8A ANUIDADES. |
|
B08K | Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette] |
Free format text: REFERENTE AO DESPACHO 8.6 NA RPI2003 DE 26/05/2009. |