SE363322B - - Google Patents
Info
- Publication number
- SE363322B SE363322B SE132669A SE132669A SE363322B SE 363322 B SE363322 B SE 363322B SE 132669 A SE132669 A SE 132669A SE 132669 A SE132669 A SE 132669A SE 363322 B SE363322 B SE 363322B
- Authority
- SE
- Sweden
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 (en) | 1968-02-01 | 1968-02-01 | |
| PL12501568A PL69744B1 (en) | 1968-02-01 | 1968-02-01 | |
| PL13020568A PL69740B1 (en) | 1968-11-23 | 1968-11-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SE363322B true SE363322B (en) | 1974-01-14 |
Family
ID=27354018
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE132669A SE363322B (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) |
| DE60110932T2 (en) * | 2000-12-22 | 2006-01-19 | Eastman Chemical Co., Kingsport | CONTINUOUS METHOD FOR THE PREPARATION OF L-ASCORBIC ACID |
| ATE303373T1 (en) | 2000-12-22 | 2005-09-15 | Eastman Chem Co | METHOD FOR PRODUCING ASCORBIC ACID IN THE PRESENCE OF A SULFITE |
| 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 DE DE19691904619 patent/DE1904619C3/en not_active Expired
- 1969-01-30 DK DK51269A patent/DK131467C/en active
- 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 |
|---|---|
| CH490368A (en) | 1970-05-15 |
| FR2001090A1 (en) | 1969-09-26 |
| DE1904619B2 (en) | 1974-10-31 |
| DK131467C (en) | 1976-02-09 |
| DE1904619C3 (en) | 1975-06-12 |
| ES363151A1 (en) | 1970-11-16 |
| JPS4830273B1 (en) | 1973-09-18 |
| GB1222322A (en) | 1971-02-10 |
| DK131467B (en) | 1975-07-21 |
| DE1904619A1 (en) | 1970-08-27 |
| CS169787B2 (en) | 1976-07-29 |
| AT308290B (en) | 1973-06-25 |