CS169787B2 - - Google Patents
Info
- Publication number
- CS169787B2 CS169787B2 CS62569A CS62569A CS169787B2 CS 169787 B2 CS169787 B2 CS 169787B2 CS 62569 A CS62569 A CS 62569A CS 62569 A CS62569 A CS 62569A CS 169787 B2 CS169787 B2 CS 169787B2
- Authority
- CS
- Czechoslovakia
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)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL12501368A PL69743B1 (ja) | 1968-02-01 | 1968-02-01 | |
| PL12501568A PL69744B1 (ja) | 1968-02-01 | 1968-02-01 | |
| PL13020568A PL69740B1 (ja) | 1968-11-23 | 1968-11-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CS169787B2 true CS169787B2 (ja) | 1976-07-29 |
Family
ID=27354018
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CS62569A CS169787B2 (ja) | 1968-02-01 | 1969-01-31 |
Country Status (10)
| Country | Link |
|---|---|
| JP (1) | JPS4830273B1 (ja) |
| AT (1) | AT308290B (ja) |
| CH (1) | CH490368A (ja) |
| CS (1) | CS169787B2 (ja) |
| DE (1) | DE1904619C3 (ja) |
| DK (1) | DK131467C (ja) |
| ES (1) | ES363151A1 (ja) |
| FR (1) | FR2001090A1 (ja) |
| GB (1) | GB1222322A (ja) |
| SE (1) | SE363322B (ja) |
Families Citing this family (10)
| 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 |
| ES2061395B1 (es) * | 1993-02-09 | 1995-12-16 | Velasco Clemente Jesus Sanchez | Carburador de inyeccion adicional variable de aire y combustible, controlado mediante embolo diferencial fijado a corredera con movimiento lineal directo. |
| DE19938980A1 (de) | 1999-08-19 | 2001-02-22 | Basf Ag | Verfahren zur Herstellung von 2-Keto-L-gulonsäureestern |
| 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 |
| 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 |
| ATE295843T1 (de) * | 2000-12-22 | 2005-06-15 | Eastman Chem Co | Kontinuierliches verfahren zur herstellung von l- ascorbinsäure |
| 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 |
| DE10231890B4 (de) | 2002-07-12 | 2004-07-01 | Basf Ag | Verfahren zur Abtrennung von Ascorbinsäure aus einem polaren, Ascorbinsäure und 2-Keto-L-gulonsäure enthaltenden Lösungsmittel |
-
1969
- 1969-01-22 CH CH97469A patent/CH490368A/fr not_active IP Right Cessation
- 1969-01-24 FR FR6901434A patent/FR2001090A1/fr not_active Withdrawn
- 1969-01-27 AT AT79869A patent/AT308290B/de not_active IP Right Cessation
- 1969-01-30 DE DE19691904619 patent/DE1904619C3/de not_active Expired
- 1969-01-30 DK DK51269A patent/DK131467C/da active
- 1969-01-31 JP JP677369A patent/JPS4830273B1/ja active Pending
- 1969-01-31 CS CS62569A patent/CS169787B2/cs unknown
- 1969-01-31 ES ES363151A patent/ES363151A1/es not_active Expired
- 1969-01-31 SE SE132669A patent/SE363322B/xx unknown
- 1969-02-03 GB GB559569A patent/GB1222322A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE1904619C3 (de) | 1975-06-12 |
| SE363322B (ja) | 1974-01-14 |
| JPS4830273B1 (ja) | 1973-09-18 |
| FR2001090A1 (ja) | 1969-09-26 |
| DE1904619A1 (de) | 1970-08-27 |
| DK131467B (da) | 1975-07-21 |
| CH490368A (fr) | 1970-05-15 |
| DK131467C (da) | 1976-02-09 |
| GB1222322A (en) | 1971-02-10 |
| ES363151A1 (es) | 1970-11-16 |
| AT308290B (de) | 1973-06-25 |
| DE1904619B2 (de) | 1974-10-31 |