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)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL12501568A PL69744B1 (en) | 1968-02-01 | 1968-02-01 | |
| PL12501368A PL69743B1 (en) | 1968-02-01 | 1968-02-01 | |
| PL13020568A PL69740B1 (en) | 1968-11-23 | 1968-11-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CS169787B2 true CS169787B2 (en) | 1976-07-29 |
Family
ID=27354018
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CS62569A CS169787B2 (en) | 1968-02-01 | 1969-01-31 |
Country Status (10)
| Country | Link |
|---|---|
| JP (1) | JPS4830273B1 (en) |
| AT (1) | AT308290B (en) |
| CH (1) | CH490368A (en) |
| CS (1) | CS169787B2 (en) |
| DE (1) | DE1904619C3 (en) |
| DK (1) | DK131467C (en) |
| ES (1) | ES363151A1 (en) |
| FR (1) | FR2001090A1 (en) |
| GB (1) | GB1222322A (en) |
| SE (1) | SE363322B (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58177986A (en) * | 1982-04-09 | 1983-10-18 | Shionogi & Co Ltd | Production of l-ascorbic acid |
| ES2061395B1 (en) * | 1993-02-09 | 1995-12-16 | Velasco Clemente Jesus Sanchez | ADDITIONAL INJECTION CARBURETTOR AIR VARIABLE AND FUEL, CONTROLLED THROUGH DIFFERENTIAL PISTON FIXED TO SLIDING WITH DIRECT LINEAR MOVEMENT. |
| DE19938980A1 (en) | 1999-08-19 | 2001-02-22 | Basf Ag | Process for the preparation of 2-keto-L-gulonic acid esters |
| DE19954511A1 (en) * | 1999-11-12 | 2001-05-17 | Basf Ag | Process for the preparation of alkali salts of L-ascorbic acid |
| DE10022518A1 (en) | 2000-05-10 | 2001-11-15 | Basf Ag | Preparation of L-ascorbic acids by reacting 2-keto-L-gulonic acids or melt of 2-keto-L-gulonic acid alkyl esters under acid catalysis using water-miscible solvent(s) |
| BR0116451A (en) * | 2000-12-22 | 2003-09-30 | Eastman Chem Co | Continuous Process for L-Ascorbic Acid Manufacturing |
| US6864376B2 (en) | 2000-12-22 | 2005-03-08 | Eastman Chemical Company | Process for producing ascorbic acid |
| 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 (en) | 2002-07-12 | 2004-07-01 | Basf Ag | Process for the separation of ascorbic acid from a polar solvent containing ascorbic acid and 2-keto-L-gulonic acid |
-
1969
- 1969-01-22 CH CH97469A patent/CH490368A/en not_active IP Right Cessation
- 1969-01-24 FR FR6901434A patent/FR2001090A1/fr not_active Withdrawn
- 1969-01-27 AT AT79869A patent/AT308290B/en not_active IP Right Cessation
- 1969-01-30 DK DK51269A patent/DK131467C/en active
- 1969-01-30 DE DE19691904619 patent/DE1904619C3/en not_active Expired
- 1969-01-31 SE SE132669A patent/SE363322B/xx unknown
- 1969-01-31 CS CS62569A patent/CS169787B2/cs unknown
- 1969-01-31 JP JP677369A patent/JPS4830273B1/ja active Pending
- 1969-01-31 ES ES363151A patent/ES363151A1/en not_active Expired
- 1969-02-03 GB GB559569A patent/GB1222322A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE1904619A1 (en) | 1970-08-27 |
| DK131467B (en) | 1975-07-21 |
| ES363151A1 (en) | 1970-11-16 |
| SE363322B (en) | 1974-01-14 |
| JPS4830273B1 (en) | 1973-09-18 |
| DE1904619B2 (en) | 1974-10-31 |
| GB1222322A (en) | 1971-02-10 |
| FR2001090A1 (en) | 1969-09-26 |
| DE1904619C3 (en) | 1975-06-12 |
| AT308290B (en) | 1973-06-25 |
| DK131467C (en) | 1976-02-09 |
| CH490368A (en) | 1970-05-15 |