DK0442431T3 - Fremgangsmåde til fremstilling af kvadratsyre - Google Patents
Fremgangsmåde til fremstilling af kvadratsyreInfo
- Publication number
- DK0442431T3 DK0442431T3 DK91101903.2T DK91101903T DK0442431T3 DK 0442431 T3 DK0442431 T3 DK 0442431T3 DK 91101903 T DK91101903 T DK 91101903T DK 0442431 T3 DK0442431 T3 DK 0442431T3
- Authority
- DK
- Denmark
- Prior art keywords
- preparation
- cyclobutenones
- cyclobuten
- acetoxy
- give
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C49/00—Ketones; Ketenes; Dimeric ketenes; Ketonic chelates
- C07C49/587—Unsaturated compounds containing a keto groups being part of a ring
- C07C49/703—Unsaturated compounds containing a keto groups being part of a ring containing hydroxy groups
- C07C49/707—Unsaturated compounds containing a keto groups being part of a ring containing hydroxy groups a keto group being part of a three- to five-membered ring
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
- C07C45/42—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by hydrolysis
- C07C45/43—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by hydrolysis of >CX2 groups, X being halogen
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
- C07C45/51—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by pyrolysis, rearrangement or decomposition
- C07C45/54—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by pyrolysis, rearrangement or decomposition of compounds containing doubly bound oxygen atoms, e.g. esters
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
- C07C45/61—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups
- C07C45/64—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups by introduction of functional groups containing oxygen only in singly bound form
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
- C07C45/61—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups
- C07C45/67—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups by isomerisation; by change of size of the carbon skeleton
- C07C45/673—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups by isomerisation; by change of size of the carbon skeleton by change of size of the carbon skeleton
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Steroid Compounds (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH43990 | 1990-02-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DK0442431T3 true DK0442431T3 (da) | 1994-06-13 |
Family
ID=4187060
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DK91101903.2T DK0442431T3 (da) | 1990-02-12 | 1991-02-11 | Fremgangsmåde til fremstilling af kvadratsyre |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US5130492A (fr) |
| EP (1) | EP0442431B1 (fr) |
| JP (1) | JP2890856B2 (fr) |
| AT (1) | ATE105543T1 (fr) |
| CA (1) | CA2036002A1 (fr) |
| DE (1) | DE59101590D1 (fr) |
| DK (1) | DK0442431T3 (fr) |
| ES (1) | ES2052288T3 (fr) |
| IE (1) | IE64516B1 (fr) |
| RU (1) | RU2049768C1 (fr) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5360937A (en) * | 1992-03-24 | 1994-11-01 | Lonza Ltd. | 1,3-cyclobutanedione-bisketals, process for their production and their use |
| JP4003817B2 (ja) * | 1996-04-09 | 2007-11-07 | 協和発酵ケミカル株式会社 | ３，４−ジヒドロキシ−３−シクロブテン−１，２−ジオンの製造法 |
| EP1010684B1 (fr) * | 1997-09-05 | 2008-07-16 | Kyowa Yuka Co., Ltd. | Procede de production de 3,4-dihydroxy-3-cyclobutene-1,2-dione |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3288854A (en) * | 1963-07-05 | 1966-11-29 | Eastman Kodak Co | Addition of dialkylketenes to alkoxyacetylenes |
| DE1253266B (de) * | 1963-08-24 | 1967-11-02 | Huels Chemische Werke Ag | Verfahren zur Herstellung von Dioxocyclobutendiol |
| US3456010A (en) * | 1968-01-18 | 1969-07-15 | American Cyanamid Co | Chloro-hydroxy-polyfluorocycloalkenones |
| CH609837A5 (en) * | 1975-05-30 | 1979-03-30 | Ciba Geigy Ag | Contact herbicide and its use |
| DE2623836C3 (de) * | 1976-05-28 | 1978-12-21 | Chemische Werke Huels Ag, 4370 Marl | Verfahren zur Herstellung von Quadratsäure |
| US4104308A (en) * | 1976-06-21 | 1978-08-01 | International Business Machines Corporation | Synthesis of squaric acid |
| CH621107A5 (fr) * | 1976-12-03 | 1981-01-15 | Ciba Geigy Ag | |
| DE2824558C3 (de) * | 1978-06-05 | 1981-07-09 | Chemische Werke Hüls AG, 4370 Marl | Verfahren zur Herstellung von Quadratsäure |
| DE3314431A1 (de) * | 1983-04-21 | 1984-10-25 | Chemische Werke Hüls AG, 4370 Marl | Verfahren zur herstellung von quadratsaeure |
-
1991
- 1991-01-29 IE IE30891A patent/IE64516B1/en not_active IP Right Cessation
- 1991-02-07 US US07/651,982 patent/US5130492A/en not_active Expired - Fee Related
- 1991-02-08 JP JP3018039A patent/JP2890856B2/ja not_active Expired - Lifetime
- 1991-02-08 CA CA002036002A patent/CA2036002A1/fr not_active Abandoned
- 1991-02-11 AT AT9191101903T patent/ATE105543T1/de not_active IP Right Cessation
- 1991-02-11 ES ES91101903T patent/ES2052288T3/es not_active Expired - Lifetime
- 1991-02-11 RU SU914894419A patent/RU2049768C1/ru active
- 1991-02-11 DK DK91101903.2T patent/DK0442431T3/da not_active Application Discontinuation
- 1991-02-11 EP EP91101903A patent/EP0442431B1/fr not_active Expired - Lifetime
- 1991-02-11 DE DE59101590T patent/DE59101590D1/de not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| IE64516B1 (en) | 1995-08-09 |
| JPH04330034A (ja) | 1992-11-18 |
| ATE105543T1 (de) | 1994-05-15 |
| ES2052288T3 (es) | 1994-07-01 |
| DE59101590D1 (de) | 1994-06-16 |
| US5130492A (en) | 1992-07-14 |
| RU2049768C1 (ru) | 1995-12-10 |
| CA2036002A1 (fr) | 1991-08-13 |
| IE910308A1 (en) | 1991-08-14 |
| EP0442431A1 (fr) | 1991-08-21 |
| JP2890856B2 (ja) | 1999-05-17 |
| EP0442431B1 (fr) | 1994-05-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| AHB | Application shelved due to non-payment |