Trimethylboroxine
Structural formula | ||||||||||||||||
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General | ||||||||||||||||
Surname | Trimethylboroxine | |||||||||||||||
other names |
2,4,6-trimethylboroxine |
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Molecular formula | C 3 H 9 B 3 O 3 | |||||||||||||||
Brief description |
colorless liquid |
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External identifiers / databases | ||||||||||||||||
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properties | ||||||||||||||||
Molar mass | 125.53 g mol −1 | |||||||||||||||
Physical state |
liquid |
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density |
0.898 g cm −3 (25 ° C) |
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Melting point |
−38 ° C |
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boiling point |
78-80 ° C |
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Refractive index |
1.362 (20 ° C) |
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safety instructions | ||||||||||||||||
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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 |
Trimethylboroxine is a chemical compound from the group of boroxines .
Extraction and presentation
Trimethylboroxine can be obtained by reacting trimethylborane with boron (III) oxide at 300 ° C.
Other ways of representation are also known.
properties
Trimethylboroxine is a colorless clear liquid.
use
Trimethylboroxine is used as a derivatizing agent for GLC analysis , as a polymerization additive and for the production of CBS catalysts for asymmetric reductions.
Individual evidence
- ↑ a b c d e f g h i j data sheet trimethylboroxine, 99% from Sigma-Aldrich , accessed on May 14, 2017 ( PDF ).
- ↑ Georg Brauer (Ed.), With the collaboration of Marianne Baudler a . a .: Handbook of Preparative Inorganic Chemistry. 3rd, revised edition. Volume I, Ferdinand Enke, Stuttgart 1975, ISBN 3-432-02328-6 , p. 816.
- ^ Herbert C. Brown, Thomas E. Cole: Organoboranes. 39. Convenient procedures for the preparation of methylboronic acid and trimethylboroxine. In: Organometallics. 4, 1985, pp. 816-821, doi : 10.1021 / om00124a002 .