5-decene
Structural formula | ||||||||||
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cis -form (above) trans -form (below) | ||||||||||
General | ||||||||||
Surname | 5-decene | |||||||||
other names |
Dec-5-en |
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Molecular formula | C 10 H 20 | |||||||||
Brief description |
colorless liquid |
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External identifiers / databases | ||||||||||
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properties | ||||||||||
Molar mass | 140.27 g mol −1 | |||||||||
Physical state |
liquid |
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density |
0.74 g cm −3 (25 ° C) |
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Melting point |
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boiling point |
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solubility |
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Refractive index |
1.424 (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 |
5-Decene is a chemical compound from the group of the decenes , which occurs in two isomeric forms.
Extraction and presentation
trans -5-decene can be obtained by reacting 5-decyne with lithium in ammonia . By reacting 5-decyne with hydrogen and a Lindlar catalyst , cis -5-decene can be produced. Through additional reaction steps (reaction with bromine , dichloromethane and sodium amide to 5-decyne), a conversion of the cis to the trans form and vice versa is possible in this way. Using special catalysts, cis -5-decene can also be prepared with a high degree of purity by metathesis of 1-hexyne .
properties
5-decene is a colorless liquid that is practically insoluble in water. Its pyrolysis produces numerous other organic compounds in addition to propene , ethene , 1-butene and 1-heptene .
use
trans -5-decene can be used to characterize the effect of cyclization and the stability of the Criegee intermediates formed during ozonolysis .
Individual evidence
- ↑ a b c d e f g h data sheet trans-5-decene, 99% from Sigma-Aldrich , accessed on June 3, 2017 ( PDF ).
- ↑ a b c d e f William M. Haynes: CRC Handbook of Chemistry and Physics, 94th Edition . CRC Press, 2016, ISBN 978-1-4665-7115-0 , pp. 142 ( limited preview in Google Book search).
- ↑ Data sheet trans-5-Decene, 97% at AlfaAesar, accessed on June 3, 2017 ( PDF )(JavaScript required) .
- ↑ John E. McMurry: Organic Chemistry . Cengage Learning, 2015, ISBN 978-1-305-68646-5 , pp. 286-IA10 ( limited preview in Google Book search).
- ^ McMurry, John E. Study Guide with Student Solutions Manual for McMurry's Organic Chemistry, 8th . Cengage Learning, 2011, ISBN 1-285-97481-6 , pp. 209 ( limited preview in Google Book search).
- ↑ mit.edu: DSpace @ MIT: Z-selective olefin metathesis processes and Cis / syndioselective ROMP with high oxidation state molybdenum alkylidenes , accessed on June 3, 2017
- ^ Serban C. Moldoveanu: Pyrolysis of Organic Molecules Applications to Health and Environmental Issues . Elsevier, 2009, ISBN 978-0-08-093215-6 , pp. 181 ( limited preview in Google Book search).