Process for preparation of 4-amino-2,2,6,6-tetramethylpiperidine (TAD) via the intermediate 2,2,6,6-tetramethyl-4-[(2,2,6,6-tetramethyl-4-piperidylidene)amino]-piperidine
Production of 4-amino-2,2,6,6- tetramethyl-piperidine (TAD; formula (I)) comprises (1) reacting 2,2,6,6-tetramethyl-piperidin-4-one (TAA; formula (II)) with TAD to give 2,2,6,6-tetramethyl-4-Ä(2,2,6,6-tetramethyl-4- piperidylidene)aminoÜ-piperidine (Imine formula (III)) and then (2) reacting (III) w...
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| Main Author | |
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| Format | Patent |
| Language | English French German |
| Published |
05.01.2000
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| Edition | 7 |
| Subjects | |
| Online Access | Get full text |
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| Abstract | Production of 4-amino-2,2,6,6- tetramethyl-piperidine (TAD; formula (I)) comprises (1) reacting 2,2,6,6-tetramethyl-piperidin-4-one (TAA; formula (II)) with TAD to give 2,2,6,6-tetramethyl-4-Ä(2,2,6,6-tetramethyl-4- piperidylidene)aminoÜ-piperidine (Imine formula (III)) and then (2) reacting (III) with ammonia and hydrogen in presence of a hydrogenation catalyst to give 2 mol equivalents of TAD. Also claimed is a process for the production of (III) by reaction of (I) with (II). |
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| AbstractList | Production of 4-amino-2,2,6,6- tetramethyl-piperidine (TAD; formula (I)) comprises (1) reacting 2,2,6,6-tetramethyl-piperidin-4-one (TAA; formula (II)) with TAD to give 2,2,6,6-tetramethyl-4-Ä(2,2,6,6-tetramethyl-4- piperidylidene)aminoÜ-piperidine (Imine formula (III)) and then (2) reacting (III) with ammonia and hydrogen in presence of a hydrogenation catalyst to give 2 mol equivalents of TAD. Also claimed is a process for the production of (III) by reaction of (I) with (II). |
| Author | JULIUS, MANFRED |
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| DocumentTitleAlternate | Verfahren zur Herstellung von 4-Amino-2,2,6,6-tetramethylpiperidin (TAD) über das Zwischenprodukt 2,2,6,6-Tetramethyl-4-[(2,2,6,6-tetramethyl-4-piperidyliden)amino]-piperidin Procédé pour la préparation de 4-amino-2,2,6,6-tétraméthylpipéridine (TAD) via le composé intermédiaire 2,2,6,6-tétraméthyl-4-[(2,2,6,6-tétraméthyl-4-pipéridylidéne)amino]-pipéridine |
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| Notes | Application Number: EP19970118719 |
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| Snippet | Production of 4-amino-2,2,6,6- tetramethyl-piperidine (TAD; formula (I)) comprises (1) reacting 2,2,6,6-tetramethyl-piperidin-4-one (TAA; formula (II)) with... |
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| Title | Process for preparation of 4-amino-2,2,6,6-tetramethylpiperidine (TAD) via the intermediate 2,2,6,6-tetramethyl-4-[(2,2,6,6-tetramethyl-4-piperidylidene)amino]-piperidine |
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