ZA8986B - Production of l-ascorbic acid from 2-keto-i-gulonic acid with an acid catalyst and a lipophilic surfactant having a low hydrophilic:lipophilic balance under substantially anhydrous conditions - Google Patents
Production of l-ascorbic acid from 2-keto-i-gulonic acid with an acid catalyst and a lipophilic surfactant having a low hydrophilic:lipophilic balance under substantially anhydrous conditionsInfo
- Publication number
- ZA8986B ZA8986B ZA8986A ZA8986A ZA8986B ZA 8986 B ZA8986 B ZA 8986B ZA 8986 A ZA8986 A ZA 8986A ZA 8986 A ZA8986 A ZA 8986A ZA 8986 B ZA8986 B ZA 8986B
- Authority
- ZA
- South Africa
- Prior art keywords
- acid
- lipophilic
- keto
- production
- under substantially
- Prior art date
Links
- CIWBSHSKHKDKBQ-JLAZNSOCSA-N Ascorbic acid Chemical compound OC[C@H](O)[C@H]1OC(=O)C(O)=C1O CIWBSHSKHKDKBQ-JLAZNSOCSA-N 0.000 title 2
- 239000002211 L-ascorbic acid Substances 0.000 title 1
- 235000000069 L-ascorbic acid Nutrition 0.000 title 1
- 239000003377 acid catalyst Substances 0.000 title 1
- 229960005070 ascorbic acid Drugs 0.000 title 1
- 239000004094 surface-active agent Substances 0.000 title 1
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)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US14209888A | 1988-01-06 | 1988-01-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ZA8986B true ZA8986B (en) | 1990-08-29 |
Family
ID=22498548
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ZA8986A ZA8986B (en) | 1988-01-06 | 1989-01-05 | Production of l-ascorbic acid from 2-keto-i-gulonic acid with an acid catalyst and a lipophilic surfactant having a low hydrophilic:lipophilic balance under substantially anhydrous conditions |
Country Status (8)
| Country | Link |
|---|---|
| EP (1) | EP0324261A1 (da) |
| JP (1) | JPH01213275A (da) |
| CN (1) | CN1035665A (da) |
| AU (1) | AU608929B2 (da) |
| DK (1) | DK3589A (da) |
| MX (1) | MX169971B (da) |
| YU (1) | YU1389A (da) |
| ZA (1) | ZA8986B (da) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08188578A (ja) * | 1994-11-11 | 1996-07-23 | Takeda Chem Ind Ltd | Ｌ−アスコルビン酸の製造方法 |
| DE19547073C1 (de) * | 1995-12-16 | 1996-11-14 | Merck Patent Gmbh | Verfahren zur Herstellung von Ascorbinsäure |
| US6740762B2 (en) * | 2001-08-24 | 2004-05-25 | Eastman Chemical Company | Process for ascorbic acids using alkaline earth silicate catalysts |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58177986A (ja) * | 1982-04-09 | 1983-10-18 | Shionogi & Co Ltd | Ｌ−アスコルビン酸の製造方法 |
| 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 |
| DE3766792D1 (de) * | 1986-10-01 | 1991-01-31 | Air Prod & Chem | Herstellung von poly(n-vinylamiden) mit hohem molekulargewicht und polyvinylamine durch polymerisation in umgekehrter emulsion. |
-
1988
- 1988-12-22 EP EP88312161A patent/EP0324261A1/en not_active Withdrawn
-
1989
- 1989-01-05 DK DK003589A patent/DK3589A/da not_active Application Discontinuation
- 1989-01-05 MX MX1444389A patent/MX169971B/es unknown
- 1989-01-05 YU YU00013/89A patent/YU1389A/xx unknown
- 1989-01-05 ZA ZA8986A patent/ZA8986B/xx unknown
- 1989-01-05 AU AU27745/89A patent/AU608929B2/en not_active Ceased
- 1989-01-05 CN CN89100127A patent/CN1035665A/zh active Pending
- 1989-01-06 JP JP64001142A patent/JPH01213275A/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| EP0324261A1 (en) | 1989-07-19 |
| JPH01213275A (ja) | 1989-08-28 |
| DK3589A (da) | 1989-07-07 |
| YU1389A (en) | 1990-06-30 |
| AU2774589A (en) | 1989-07-06 |
| MX169971B (es) | 1993-08-02 |
| AU608929B2 (en) | 1991-04-18 |
| DK3589D0 (da) | 1989-01-05 |
| CN1035665A (zh) | 1989-09-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| IL89850A0 (en) | Ester of ascorbic acid 2-phosphate | |
| EP0236103A3 (en) | Preparation of aqeous solutions of copolymers of dicarboxylic acids having a low dicarboxylic acid monomer content | |
| EP0272787A3 (en) | Catalytic production of optically active carboxylic acid | |
| ZA908165B (en) | Non-aqueous micellar solutions of various drugs | |
| HU907152D0 (en) | Diagnosis of appendicitis by utilization of delta-hydroxy-hippuric acid | |
| JPS6416783A (en) | Bridged diazabicycloalkylquinolinecarboxylic acid and esters of same | |
| GB2179353B (en) | A method of purifying l-ascorbic acid | |
| AU559281B2 (en) | L-ascorbic acid from 2-keto-l-gulonate | |
| AU608155B2 (en) | Preparation of dicarboxylic acid | |
| EP0296483A3 (en) | Preparation of ascorbic acid 6-esters | |
| AU2774589A (en) | 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 | |
| GB2205567B (en) | Production of l-ascorbic acid | |
| GB2196338B (en) | 7-oxabicycloheptane substituted hydroxamic acid prostaglandin analogs | |
| GB8502790D0 (en) | Salicyclic acid esters | |
| EP0253788A3 (en) | A method of preparing 5-amino salicyclic acid | |
| GB2179354B (en) | A method of purifying l-ascorbic acid | |
| JPS6413057A (en) | Manufacture of omega-formylalkanecarboxylic acid ester | |
| JPS6413055A (en) | Manufacture of pentenoic acid ester | |
| ZA895238B (en) | Production of chloric acid | |
| JPS6420261A (en) | Aqueous composition containing polymerized fatty acid polyamide | |
| GB8813889D0 (en) | Solutions of permonosulphuric acid | |
| JPS6470459A (en) | Manufacture of 2-arylthiobenzoic acid | |
| JPS6463542A (en) | Manufacture of 3,3-dimethyl-4-pentenoic acid | |
| ZA857970B (en) | Esters of 2-bromo-4-methylimidazole-5-carboxylic acid | |
| IL92279A0 (en) | Preparation of 2-chloro-4-toluenesulfonic acid |