JPS5488275A - Production of 2,2,6,6-tetramethyl-4-oxopiperidine - Google Patents
Production of 2,2,6,6-tetramethyl-4-oxopiperidineInfo
- Publication number
- JPS5488275A JPS5488275A JP15421777A JP15421777A JPS5488275A JP S5488275 A JPS5488275 A JP S5488275A JP 15421777 A JP15421777 A JP 15421777A JP 15421777 A JP15421777 A JP 15421777A JP S5488275 A JPS5488275 A JP S5488275A
- Authority
- JP
- Japan
- Prior art keywords
- acetone
- catalyst
- hydrazine
- ammonia
- oxopiperidine
- Prior art date
- 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.)
- Granted
Links
Abstract
PURPOSE: High-purity title compound useful as synthetic intermediate for light stabilizers or medicines is prepared from acetone and/or its acidic condensates and ammonia using a specific catalyst in high yield.
CONSTITUTION: The reaction of acetone and/or acidic condensates of acetone such as diacetone alcohol, mesityl oixde with ammonia is carried out in the presence of a catalyst of a hydrazine and/or its hydrohalogenic acid salt of the formula (R1, R2, R3, R4 are alkyl, cycloalkyl, aryl, alkaryl, aralkyl and hydrogen respectively; X is Br, Cl, I; n is 1, 2) such as hydrazine or N-methylhydrazine to form the objective triacetoneamine. The amount of the catalyst used is more than 0.01, preferably 0.05W10.0 wt.% based on the acetone used.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15421777A JPS597701B2 (en) | 1977-12-21 | 1977-12-21 | Method for producing 2,2,6,6-tetramethyl-4-oxopiperidine |
US05/971,858 US4252958A (en) | 1977-12-21 | 1978-12-21 | Process for preparing 2,2,6,6-Tetramethyl-4-oxopiperidine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15421777A JPS597701B2 (en) | 1977-12-21 | 1977-12-21 | Method for producing 2,2,6,6-tetramethyl-4-oxopiperidine |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5488275A true JPS5488275A (en) | 1979-07-13 |
JPS597701B2 JPS597701B2 (en) | 1984-02-20 |
Family
ID=15579395
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15421777A Expired JPS597701B2 (en) | 1977-12-21 | 1977-12-21 | Method for producing 2,2,6,6-tetramethyl-4-oxopiperidine |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS597701B2 (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02145571A (en) * | 1988-11-28 | 1990-06-05 | Mitsui Petrochem Ind Ltd | Production of 2,2,6,6-tetramethyl-4-oxopiperidine |
EP2706056A1 (en) | 2012-09-07 | 2014-03-12 | Evonik Industries AG | Method for the preparation and treatment of a reaction mixture containing triacetonamine |
EP2706045A1 (en) | 2012-09-07 | 2014-03-12 | Evonik Industries AG | Method for the treatment of a waste water flow resulting from the processing of a reaction mixture containing triacetonamine |
EP3663284A1 (en) | 2018-12-07 | 2020-06-10 | 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 |
EP3907217A1 (en) | 2020-05-07 | 2021-11-10 | Evonik Operations GmbH | Improved method for the preparation of triacetonamine |
EP4279484A1 (en) | 2022-05-17 | 2023-11-22 | Sabo GmbH | Improved method for the preparation of triacetonamine |
-
1977
- 1977-12-21 JP JP15421777A patent/JPS597701B2/en not_active Expired
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02145571A (en) * | 1988-11-28 | 1990-06-05 | Mitsui Petrochem Ind Ltd | Production of 2,2,6,6-tetramethyl-4-oxopiperidine |
EP2706056A1 (en) | 2012-09-07 | 2014-03-12 | Evonik Industries AG | Method for the preparation and treatment of a reaction mixture containing triacetonamine |
EP2706045A1 (en) | 2012-09-07 | 2014-03-12 | Evonik Industries AG | Method for the treatment of a waste water flow resulting from the processing of a reaction mixture containing triacetonamine |
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 |
DE102012215900A1 (en) | 2012-09-07 | 2014-05-15 | Evonik Industries Ag | Process for the preparation and processing of a triacetonamine-containing reaction mixture |
EP3663284A1 (en) | 2018-12-07 | 2020-06-10 | Evonik Operations GmbH | Improved method for the preparation of triacetonamine |
US10807954B2 (en) | 2018-12-07 | 2020-10-20 | Evonik Operations Gmbh | Method for preparing triacetone amine |
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 |
EP3750877A1 (en) | 2019-06-13 | 2020-12-16 | Evonik Operations GmbH | Method for preparing triacetone amine and 2,2,4,6-tetramethylpiperidine |
EP3907217A1 (en) | 2020-05-07 | 2021-11-10 | Evonik Operations GmbH | Improved method for the preparation of triacetonamine |
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 |
Also Published As
Publication number | Publication date |
---|---|
JPS597701B2 (en) | 1984-02-20 |
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