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Fatty acids, Part 43 The preparation and properties of some methyl dimercaptostearates and of some related methyl epithio- and epidithiostearates

✍ Scribed by F.D. Gunstone; M.G. Hussain; D.M. Smith


Publisher
Elsevier Science
Year
1974
Tongue
English
Weight
470 KB
Volume
13
Category
Article
ISSN
0009-3084

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πŸ“œ SIMILAR VOLUMES


Fatty acids, Part 42 The preparation and
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Some saturated and unsaturated mercapto Cl8 esters have been obtained for the first time. Such compounds are prepared from hydroxy esters via their mesyloxy derivatives by reaction with sodium hydrogen sulphide or with potassium thioacetate (followed by deacetylation) or from alkene esters by radica

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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 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

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The chromatographic properties of the cis and trans methyl octadecenoates and of some C12 and Cls acetylenic esters on thin layers of silica impregnated with silver nitrate and on some GLC systems are reported. The possibility of identification and separation of these isomers is discussed.