2,2,6,6-tetramethylpiperidine
Structural formula | ||||||||||||||||
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General | ||||||||||||||||
Surname | 2,2,6,6-tetramethylpiperidine | |||||||||||||||
other names |
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Molecular formula | C 9 H 19 N | |||||||||||||||
Brief description |
clear to yellow liquid |
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External identifiers / databases | ||||||||||||||||
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properties | ||||||||||||||||
Molar mass | 141.25 g mol −1 | |||||||||||||||
Physical state |
liquid |
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density |
0.837 g cm −3 (25 ° C) |
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Melting point |
−59 ° C |
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boiling point |
152 ° C |
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Refractive index |
1.445 (20 ° C) |
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safety instructions | ||||||||||||||||
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Toxicological data | ||||||||||||||||
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions . Refractive index: Na-D line , 20 ° C |
2,2,6,6-Tetramethylpiperidine is a chemical compound from the group of piperidines .
Extraction and presentation
One way of producing tetramethylpiperidine 2 begins with the conjugate addition of ammonia to Phoron 1 . The intermediate product triacetonamine is reduced in a Wolff-Kishner reaction .
use
Tetramethylpiperin forms the basic structure of the HALS - UV stabilizers (from English H indered A mine L ight S tabilizers ). It is also the basis of the radical species 2,2,6,6-tetramethylpiperidinyloxyl (TEMPO) and the strong base lithium tetramethylpiperidide .
Individual evidence
- ↑ a b data sheet at chemicalland21
- ↑ a b c d e f data sheet 2,2,6,6-Tetramethylpiperidine, ≥99% from Sigma-Aldrich , accessed on March 26, 2014 ( PDF ).
- ↑ Detlef Kampmann, Georg Stuhlmüller, Roger Simon, Fabrice Cottet, Frédéric Leroux, Manfred Schlosser : A Large-Scale Low-Cost Access to the Lithium 2,2,6,6-Tetramethylpiperidide Precursor . In: Synthesis . 2005, No. 06, 2005, pp. 1028-1029. doi : 10.1055 / s-2004-834856 .