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
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 (xx) |
| JP (1) | JPH01213275A (xx) |
| CN (1) | CN1035665A (xx) |
| AU (1) | AU608929B2 (xx) |
| DK (1) | DK3589A (xx) |
| MX (1) | MX169971B (xx) |
| YU (1) | YU1389A (xx) |
| ZA (1) | ZA8986B (xx) |
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 |
| EP0264649B1 (en) * | 1986-10-01 | 1990-12-19 | Air Products And Chemicals, Inc. | Manufacture of high molecular weight poly(n-vinylamides) and poly(vinylamines) by inverse emulsion polymerization |
-
1988
- 1988-12-22 EP EP88312161A patent/EP0324261A1/en not_active Withdrawn
-
1989
- 1989-01-05 CN CN89100127A patent/CN1035665A/zh active Pending
- 1989-01-05 MX MX1444389A patent/MX169971B/es unknown
- 1989-01-05 AU AU27745/89A patent/AU608929B2/en not_active Ceased
- 1989-01-05 ZA ZA8986A patent/ZA8986B/xx unknown
- 1989-01-05 DK DK003589A patent/DK3589A/da not_active Application Discontinuation
- 1989-01-05 YU YU00013/89A patent/YU1389A/xx unknown
- 1989-01-06 JP JP64001142A patent/JPH01213275A/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| CN1035665A (zh) | 1989-09-20 |
| YU1389A (en) | 1990-06-30 |
| MX169971B (es) | 1993-08-02 |
| AU608929B2 (en) | 1991-04-18 |
| AU2774589A (en) | 1989-07-06 |
| DK3589A (da) | 1989-07-07 |
| DK3589D0 (da) | 1989-01-05 |
| JPH01213275A (ja) | 1989-08-28 |
| EP0324261A1 (en) | 1989-07-19 |
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