Synthesis and properties of methyl 9,12,15-octadecatrienoate geometric isomers

Autor:	Henry Rakoff, E. A. Emken
Rok vydání:	1982
Předmět:	Infrared Organic Chemistry Cell Biology Photochemistry Biochemistry chemistry.chemical_compound Chain (algebraic topology) chemistry Bromide Wittig reaction Melting point Physical chemistry Molecular Biology Cis–trans isomerism
Zdroj:	Chemistry and Physics of Lipids. 31:215-225
ISSN:	0009-3084
DOI:	10.1016/0009-3084(82)90057-3
Popis:	The eight geometrically isomeric methyl 9,12,15-octadecatrienoates were prepared by using the Wittig reaction to couple cis- or trans-3-hexyenyltriphenylphosphonium bromide and methyl 12-oxo-cis- or trans-9-dodecenoate. Pairs of geometric triene isomers formed were separated by partial silver resin chromatography. Physical constants including melting points, percent trans by infrared, equivalent chain lengths (ECL), and 13C nuclear magnetic resonance (NMR) chemcial shifts are tabulated for the individual isomers.
Databáze:	OpenAIRE
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