Mass spectrometric indication of double bond position in dodecenals without any chemical derivatization

Mass spectrometric indication of double bond position in dodecenals without any chemical derivatization

Ten positional isomers (Δ2‐Δ11) of unmodified dodecenal were analysed by conventional combined gas chromatography/electron impact mass spectrometry. The relative abundances of some predominant fragments in the isomers examined varied with the position of the original double bond. Eminent dominance o...

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Veröffentlicht in:Biological Mass Spectrometry 1988-10, Vol.17 (4), p.301-306
Hauptverfasser: Horiike, Michio, Hirano, Chisato
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Chemistry
Exact sciences and technology
Mass spectrometry
Organic chemistry
Reactivity and mechanisms
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Hirano, Chisato
description Ten positional isomers (Δ2‐Δ11) of unmodified dodecenal were analysed by conventional combined gas chromatography/electron impact mass spectrometry. The relative abundances of some predominant fragments in the isomers examined varied with the position of the original double bond. Eminent dominance of a particular isomer over the others in their relative intensities was observed at some fragment ion peaks. The intensity ratios of certain selected pairs of predominant fragment ions are of diagnostic value for the identification of the double bond position. A procedure for the characterization of the double bond position in the chain is given.
doi_str_mv 10.1002/bms.1200170413
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Mass Spectrom</addtitle><description>Ten positional isomers (Δ2‐Δ11) of unmodified dodecenal were analysed by conventional combined gas chromatography/electron impact mass spectrometry. The relative abundances of some predominant fragments in the isomers examined varied with the position of the original double bond. Eminent dominance of a particular isomer over the others in their relative intensities was observed at some fragment ion peaks. The intensity ratios of certain selected pairs of predominant fragment ions are of diagnostic value for the identification of the double bond position. 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source Wiley Online Library Journals Frontfile Complete; Alma/SFX Local Collection
subjects Chemistry
Exact sciences and technology
Mass spectrometry
Organic chemistry
Reactivity and mechanisms
title Mass spectrometric indication of double bond position in dodecenals without any chemical derivatization
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