DD210267A5 - Verfahren zur herstellung von dihydro-4,4-dimethyl-2,3-furandion - Google Patents
Verfahren zur herstellung von dihydro-4,4-dimethyl-2,3-furandion Download PDFInfo
- Publication number
- DD210267A5 DD210267A5 DD83256758A DD25675883A DD210267A5 DD 210267 A5 DD210267 A5 DD 210267A5 DD 83256758 A DD83256758 A DD 83256758A DD 25675883 A DD25675883 A DD 25675883A DD 210267 A5 DD210267 A5 DD 210267A5
- Authority
- DD
- German Democratic Republic
- Prior art keywords
- dihydro
- oxidation
- dimethyl
- item
- furanone
- 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
- C07D307/60—Two oxygen atoms, e.g. succinic anhydride
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Furan Compounds (AREA)
- Heterocyclic Carbon Compounds Containing A Hetero Ring Having Oxygen Or Sulfur (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19823242560 DE3242560A1 (de) | 1982-11-18 | 1982-11-18 | Verfahren zur herstellung von dihydro-4,4-dimethyl-2,3-furandion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DD210267A5 true DD210267A5 (de) | 1984-06-06 |
Family
ID=6178390
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DD83256758A DD210267A5 (de) | 1982-11-18 | 1983-11-16 | Verfahren zur herstellung von dihydro-4,4-dimethyl-2,3-furandion |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US4503238A (fr) |
| EP (1) | EP0109625B1 (fr) |
| JP (1) | JPS59106480A (fr) |
| AT (1) | ATE22689T1 (fr) |
| DD (1) | DD210267A5 (fr) |
| DE (2) | DE3242560A1 (fr) |
| DK (1) | DK158732C (fr) |
| HU (1) | HU191497B (fr) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1332956C (zh) * | 2002-04-25 | 2007-08-22 | Dsmip资产有限公司 | 酮基泛酸内酯的制备方法 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE6156C (de) * | P. C. JOHANNSEN in Blasberg per Flensburg | Korkzieher | ||
| US4225506A (en) * | 1978-05-30 | 1980-09-30 | Hoffmann-La Roche Inc. | Process for manufacturing a diketone |
-
1982
- 1982-11-18 DE DE19823242560 patent/DE3242560A1/de not_active Withdrawn
-
1983
- 1983-11-11 DE DE8383111279T patent/DE3366681D1/de not_active Expired
- 1983-11-11 AT AT83111279T patent/ATE22689T1/de active
- 1983-11-11 EP EP83111279A patent/EP0109625B1/fr not_active Expired
- 1983-11-16 DD DD83256758A patent/DD210267A5/de not_active IP Right Cessation
- 1983-11-16 US US06/552,389 patent/US4503238A/en not_active Expired - Lifetime
- 1983-11-17 HU HU833965A patent/HU191497B/hu not_active IP Right Cessation
- 1983-11-17 JP JP58215142A patent/JPS59106480A/ja active Granted
- 1983-11-17 DK DK527283A patent/DK158732C/da not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| DE3242560A1 (de) | 1984-05-24 |
| EP0109625B1 (fr) | 1986-10-08 |
| DK527283A (da) | 1984-05-19 |
| DK527283D0 (da) | 1983-11-17 |
| HU191497B (en) | 1987-02-27 |
| JPS59106480A (ja) | 1984-06-20 |
| JPH0437830B2 (fr) | 1992-06-22 |
| EP0109625A1 (fr) | 1984-05-30 |
| DK158732C (da) | 1990-11-19 |
| DK158732B (da) | 1990-07-09 |
| ATE22689T1 (de) | 1986-10-15 |
| DE3366681D1 (en) | 1986-11-13 |
| US4503238A (en) | 1985-03-05 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ENJ | Ceased due to non-payment of renewal fee |