The NMR spectra of a number of octadecadiynoic acids and of the derived cis, cis-and trans, trans-octadecadienoates have been studied using a 100 MHz instrument. Characteristic spectral features associated with the number of methylene groups between the two unsaturated centres are described. In diun
Fatty acids, part 28, the synthesis and chromatographic and spectroscopic properties of some methyl cis, cis-dimethyleneoctadecanoates
β Scribed by F.D. Gunstone; M. Lie Ken Jie; R.T. Wall
- Publisher
- Elsevier Science
- Year
- 1971
- Tongue
- English
- Weight
- 173 KB
- Volume
- 6
- Category
- Article
- ISSN
- 0009-3084
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β¦ Synopsis
Eight isomeric methyl cis, cis-octadecadienoates (5,12; 6,12; 7,12; 6,11 ; 8,12; 6,10; 9,12; and 6,9) have been converted to dicyclopropane esters. The GLC behaviour, NMR spectra, and mass spectra of the dimethyleneoctadecanoates are discussed.
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The N.M.R. spectra of the cis octadecenoic (A2-A17), octadecynoic (A2-A 5, AlΒ°), and dodecynoic (A s\_ A ll) acids have been recorded. Those with unsaturation near the centre of the molecule cannot be distinguished from one another but the four isomers with unsaturation closest to the carboxyl group
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