JPS4830273B1 - - Google Patents
Info
- Publication number
- JPS4830273B1 JPS4830273B1 JP677369A JP677369A JPS4830273B1 JP S4830273 B1 JPS4830273 B1 JP S4830273B1 JP 677369 A JP677369 A JP 677369A JP 677369 A JP677369 A JP 677369A JP S4830273 B1 JPS4830273 B1 JP S4830273B1
- Authority
- JP
- Japan
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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 |
|---|---|
| JPS4830273B1 true JPS4830273B1 (en) | 1973-09-18 |
Family
ID=27354018
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP677369A Pending JPS4830273B1 (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) |
| US6864376B2 (en) | 2000-12-22 | 2005-03-08 | Eastman Chemical Company | Process for producing ascorbic acid |
| CA2432173A1 (en) * | 2000-12-22 | 2002-07-04 | Eastman Chemical Company | Continuous process for producing l-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 JP JP677369A patent/JPS4830273B1/ja active Pending
- 1969-01-31 ES ES363151A patent/ES363151A1/en not_active Expired
- 1969-01-31 SE SE132669A patent/SE363322B/xx unknown
- 1969-01-31 CS CS62569A patent/CS169787B2/cs unknown
- 1969-02-03 GB GB559569A patent/GB1222322A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE1904619B2 (en) | 1974-10-31 |
| GB1222322A (en) | 1971-02-10 |
| DK131467C (en) | 1976-02-09 |
| FR2001090A1 (en) | 1969-09-26 |
| ES363151A1 (en) | 1970-11-16 |
| CH490368A (en) | 1970-05-15 |
| DK131467B (en) | 1975-07-21 |
| DE1904619C3 (en) | 1975-06-12 |
| DE1904619A1 (en) | 1970-08-27 |
| AT308290B (en) | 1973-06-25 |
| SE363322B (en) | 1974-01-14 |
| CS169787B2 (en) | 1976-07-29 |