DK543880A - Forbedret fremgangsmaade til fremstilling af 1,4-dialkylbut-2-en-1,4-dioner - Google Patents
Forbedret fremgangsmaade til fremstilling af 1,4-dialkylbut-2-en-1,4-dionerInfo
- Publication number
- DK543880A DK543880A DK543880A DK543880A DK543880A DK 543880 A DK543880 A DK 543880A DK 543880 A DK543880 A DK 543880A DK 543880 A DK543880 A DK 543880A DK 543880 A DK543880 A DK 543880A
- Authority
- DK
- Denmark
- Prior art keywords
- diones
- dialkyl
- preparation
- improved procedure
- procedure
- Prior art date
Links
Classifications
-
- 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
- C07C45/56—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds from heterocyclic compounds
- C07C45/57—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds from heterocyclic compounds with oxygen as the only heteroatom
- C07C45/59—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds from heterocyclic compounds with oxygen as the only heteroatom in five-membered rings
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB8001011 | 1980-01-11 |
Publications (1)
Publication Number | Publication Date |
---|---|
DK543880A true DK543880A (da) | 1981-07-12 |
Family
ID=10510591
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DK543880A DK543880A (da) | 1980-01-11 | 1980-12-19 | Forbedret fremgangsmaade til fremstilling af 1,4-dialkylbut-2-en-1,4-dioner |
Country Status (9)
Country | Link |
---|---|
US (1) | US4340764A (da) |
EP (1) | EP0032290B1 (da) |
JP (1) | JPS56100732A (da) |
AU (1) | AU539191B2 (da) |
CA (1) | CA1145362A (da) |
DE (1) | DE3067027D1 (da) |
DK (1) | DK543880A (da) |
GB (1) | GB2086372B (da) |
HU (1) | HU184362B (da) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3311320A1 (de) * | 1983-03-29 | 1984-10-11 | Basf Ag, 6700 Ludwigshafen | Verfahren zur herstellung von in 1,4-stellung substituierten 2-buten-1,4-dionen |
US4898988A (en) * | 1989-03-13 | 1990-02-06 | W. R. Grace & Co.-Conn. | Process for the preparation of β-hydroxyketones |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL248419A (da) * | 1958-07-24 | 1900-01-01 | ||
CH439274A (de) * | 1964-03-03 | 1967-07-15 | Firmenich & Cie | Verfahren zur Herstellung eines Cyclopentenonderivates |
IT1014988B (it) * | 1974-06-12 | 1977-04-30 | Snam Progetti | Processo per la preparazione di alfa diol gamma diosso composti |
US3931270A (en) * | 1975-01-07 | 1976-01-06 | International Flavors & Fragrances Inc. | Process for producing 2-thia substituted 1,4 diones |
US4082717A (en) * | 1976-08-02 | 1978-04-04 | Pfizer Inc. | Preparation of gamma-pyrones |
-
1980
- 1980-11-06 EP EP80303963A patent/EP0032290B1/en not_active Expired
- 1980-11-06 DE DE8080303963T patent/DE3067027D1/de not_active Expired
- 1980-11-06 GB GB8035714A patent/GB2086372B/en not_active Expired
- 1980-11-17 AU AU64446/80A patent/AU539191B2/en not_active Ceased
- 1980-11-17 US US06/207,613 patent/US4340764A/en not_active Expired - Lifetime
- 1980-12-04 CA CA000366135A patent/CA1145362A/en not_active Expired
- 1980-12-19 DK DK543880A patent/DK543880A/da not_active Application Discontinuation
-
1981
- 1981-01-07 HU HU8123A patent/HU184362B/hu unknown
- 1981-01-12 JP JP221081A patent/JPS56100732A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
GB2086372A (en) | 1982-05-12 |
EP0032290A3 (en) | 1981-08-26 |
HU184362B (en) | 1984-08-28 |
CA1145362A (en) | 1983-04-26 |
US4340764A (en) | 1982-07-20 |
AU539191B2 (en) | 1984-09-13 |
EP0032290B1 (en) | 1984-03-14 |
EP0032290A2 (en) | 1981-07-22 |
DE3067027D1 (en) | 1984-04-19 |
GB2086372B (en) | 1983-12-07 |
AU6444680A (en) | 1981-07-16 |
JPS56100732A (en) | 1981-08-12 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AHS | Application shelved for other reasons than non-payment |