NL7408409A - - Google Patents
Info
- Publication number
- NL7408409A NL7408409A NL7408409A NL7408409A NL7408409A NL 7408409 A NL7408409 A NL 7408409A NL 7408409 A NL7408409 A NL 7408409A NL 7408409 A NL7408409 A NL 7408409A NL 7408409 A NL7408409 A NL 7408409A
- Authority
- NL
- Netherlands
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D211/00—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings
- C07D211/04—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom
- C07D211/68—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having one double bond between ring members or between a ring member and a non-ring member
- C07D211/72—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having one double bond between ring members or between a ring member and a non-ring member with hetero atoms or with carbon atoms having three bonds to hetero atoms, with at the most one bond to halogen, directly attached to ring carbon atoms
- C07D211/74—Oxygen atoms
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D211/00—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings
- C07D211/02—Preparation by ring-closure or hydrogenation
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Hydrogenated Pyridines (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
- Catalysts (AREA)
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH924173A CH574412A5 (en) | 1973-06-25 | 1973-06-25 | 2,2,6,6-Tetra-methyl-4-oxo-piperidine prepn. - from acetone and ammonia with acid catalyst in two stages with addn. of further acetone in second stage |
| CH1425773 | 1973-10-05 | ||
| CH543974 | 1974-04-19 | ||
| CH559974 | 1974-04-24 | ||
| CH701874A CH582147A5 (en) | 1974-05-22 | 1974-05-22 | 2,2,6,6-Tetra-methyl-4-oxo-piperidine prepn. - from acetone and ammonia with acid catalyst in two stages with addn. of further acetone in second stage |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| NL7408409A true NL7408409A (en) | 1974-12-30 |
| NL190846B NL190846B (en) | 1994-04-18 |
| NL190846C NL190846C (en) | 1994-09-16 |
Family
ID=27509238
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL7408409A NL190846C (en) | 1973-06-25 | 1974-06-21 | Process for preparing 2,2,6,6-tetramethyl-4-piperidone. |
Country Status (19)
| Country | Link |
|---|---|
| JP (1) | JPS5929589B2 (en) |
| AR (1) | AR202653A1 (en) |
| AT (1) | AT338262B (en) |
| BG (1) | BG27080A3 (en) |
| CA (1) | CA1027950A (en) |
| DD (1) | DD112443A5 (en) |
| DE (1) | DE2429937A1 (en) |
| DK (1) | DK139678B (en) |
| FI (1) | FI190574A (en) |
| FR (1) | FR2234291B1 (en) |
| GB (1) | GB1461703A (en) |
| HU (1) | HU176761B (en) |
| IE (1) | IE39523B1 (en) |
| IL (1) | IL45095A (en) |
| IT (1) | IT1021057B (en) |
| LU (1) | LU70387A1 (en) |
| NL (1) | NL190846C (en) |
| NO (1) | NO742255L (en) |
| SE (1) | SE403478B (en) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2807172A1 (en) * | 1978-02-20 | 1979-08-23 | Huels Chemische Werke Ag | METHOD FOR PREPARING 2,2,6,6-TETRAMETHYLPIPERIDONE- (4) |
| IT1094039B (en) * | 1978-03-31 | 1985-07-26 | Chimosa Chimica Organica Spa | PROCESS FOR THE PREPARATION OF 2,2,6,6-TETRAMETHY-4-PIPERIDONE |
| US4275211A (en) * | 1978-11-17 | 1981-06-23 | Ciba-Geigy Corporation | Process for preparing 2,2,6,6-tetraalkyl-4-oxopiperidines |
| DE2916471A1 (en) * | 1979-04-24 | 1980-11-06 | Hoechst Ag | Tri:acetonamine prodn. from acetone and ammonia - under defined conditions using little or no catalyst |
| DE3013403A1 (en) * | 1980-04-05 | 1981-10-08 | Hoechst Ag, 6000 Frankfurt | METHOD FOR PRODUCING 2,2,6,6-TETRAMETHYLPIPERDON-4 |
| DE3119514A1 (en) * | 1981-05-15 | 1983-02-24 | Empresa Cubana Exportadora e Importadora de Productos Médicos Medicuba, La Habana | Triacetoneamine hydrochloride, process for its preparation and medicaments |
| JPH0739389B2 (en) * | 1986-03-03 | 1995-05-01 | 吉富製薬株式会社 | Method for producing 2,2,6,6-tetramethyl-4-oxopiperidine |
| DE19634157A1 (en) * | 1996-08-23 | 1998-02-26 | Basf Ag | Process for the preparation of 2,2,6,6-tetramethylpiperidin-4-one |
| DE102012215900A1 (en) | 2012-09-07 | 2014-05-15 | Evonik Industries Ag | Process for the preparation and processing of a triacetonamine-containing reaction mixture |
| DE102012215903A1 (en) | 2012-09-07 | 2014-03-13 | Evonik Industries Ag | Process for the treatment of a wastewater stream, which results from the workup of a triacetonamine-containing reaction mixture |
| EP3663284B1 (en) | 2018-12-07 | 2021-02-03 | Evonik Operations GmbH | Improved method for the preparation of triacetonamine |
| EP3750876A1 (en) | 2019-06-13 | 2020-12-16 | Evonik Operations GmbH | Method for preparing triacetone amine, 2,2,4,6-tetramethylpiperidine and/or the salts of 2,2,4,6-tetramethylpiperidine |
| US11731940B2 (en) | 2020-05-07 | 2023-08-22 | Evonik Operations Gmbh | Process for preparing triacetonamine |
| EP4279484A1 (en) | 2022-05-17 | 2023-11-22 | Sabo GmbH | Improved method for the preparation of triacetonamine |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3513170A (en) * | 1966-07-23 | 1970-05-19 | Sankyo Co | Preparation of 2,2,6,6-tetramethyl-4-oxopiperidine |
-
1974
- 1974-06-20 DK DK330874AA patent/DK139678B/en unknown
- 1974-06-20 SE SE7408172A patent/SE403478B/en unknown
- 1974-06-20 FI FI1905/74A patent/FI190574A/fi unknown
- 1974-06-20 NO NO742255A patent/NO742255L/no unknown
- 1974-06-21 GB GB2760474A patent/GB1461703A/en not_active Expired
- 1974-06-21 DE DE2429937A patent/DE2429937A1/en active Granted
- 1974-06-21 LU LU70387*A patent/LU70387A1/xx unknown
- 1974-06-21 HU HUCI001483 patent/HU176761B/en unknown
- 1974-06-21 IT IT24300/74A patent/IT1021057B/en active
- 1974-06-21 IL IL45095A patent/IL45095A/en unknown
- 1974-06-21 AR AR254314A patent/AR202653A1/en active
- 1974-06-21 CA CA203,059A patent/CA1027950A/en not_active Expired
- 1974-06-21 DD DD179373A patent/DD112443A5/en unknown
- 1974-06-21 BG BG7427040A patent/BG27080A3/xx unknown
- 1974-06-21 JP JP49071215A patent/JPS5929589B2/en not_active Expired
- 1974-06-21 IE IE1302/74A patent/IE39523B1/en unknown
- 1974-06-21 NL NL7408409A patent/NL190846C/en not_active IP Right Cessation
- 1974-06-21 FR FR7421684A patent/FR2234291B1/fr not_active Expired
- 1974-06-21 AT AT517774A patent/AT338262B/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| SE403478B (en) | 1978-08-21 |
| NO742255L (en) | 1975-01-20 |
| JPS5929589B2 (en) | 1984-07-21 |
| NL190846C (en) | 1994-09-16 |
| DK330874A (en) | 1975-02-17 |
| AT338262B (en) | 1977-08-10 |
| JPS5036473A (en) | 1975-04-05 |
| ATA517774A (en) | 1976-12-15 |
| IT1021057B (en) | 1978-01-30 |
| FI190574A (en) | 1974-12-26 |
| IE39523B1 (en) | 1978-10-25 |
| IL45095A (en) | 1977-05-31 |
| FR2234291A1 (en) | 1975-01-17 |
| IE39523L (en) | 1974-12-25 |
| DK139678C (en) | 1979-09-10 |
| DD112443A5 (en) | 1975-04-12 |
| DK139678B (en) | 1979-03-26 |
| NL190846B (en) | 1994-04-18 |
| DE2429937C2 (en) | 1988-01-28 |
| GB1461703A (en) | 1977-01-19 |
| IL45095A0 (en) | 1974-09-10 |
| LU70387A1 (en) | 1976-04-13 |
| SE7408172L (en) | 1974-12-27 |
| DE2429937A1 (en) | 1975-01-16 |
| AR202653A1 (en) | 1975-06-30 |
| BG27080A3 (en) | 1979-08-15 |
| FR2234291B1 (en) | 1980-01-25 |
| HU176761B (en) | 1981-05-28 |
| CA1027950A (en) | 1978-03-14 |
| AU7043274A (en) | 1976-01-08 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| BA | A request for search or an international-type search has been filed | ||
| BB | A search report has been drawn up | ||
| BC | A request for examination has been filed | ||
| A85 | Still pending on 85-01-01 | ||
| BK | Erratum |
Free format text: PAT.BUL.18/94,PAGE 3189,HEADING V,SECTION 4;THE FOLLOWING PATENT AND DATE OF LAPSE SHOULD BE ADDED:190846 940819 |
|
| V4 | Discontinued because of reaching the maximum lifetime of a patent |