Determination of Double Bond Position in Conjugated Dienes by Chemical Ionization Mass Spectrometry with Isobutane

R. E. Doolittle, James Homer Tumlinson, III, A. Proveaux

Research output: Contribution to journalArticle

38 Citations (Scopus)

Abstract

The chemical ionization (CI) mass spectra of a series Of functionallzed conjugated dienes, including aldehydes, alcohols, formates, acetates, and hydrocarbons were investigated to determine whether fragmentations occur that are characteristic of the position of the conjugated system within the hydrocarbon chain. CI with isobutane as ionizing gas produces structure-specific fragment ions with m/z ratios that can be used to locate the positions of the double bonds in most of the cases studied. When the conjugated system is proximal to the functional group or conjugated with the functional group, other fragmentation processes take precedence. These patterns of fragmentations constitute a very useful analytical tool for the location of conjugated double bonds in a variety of natural products.

Original languageEnglish (US)
Pages (from-to)1625-1630
Number of pages6
JournalAnalytical Chemistry
Volume57
Issue number8
DOIs
StatePublished - Jul 1 1985

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Butanes
Hydrocarbons
Functional groups
Ionization
Mass spectrometry
Formates
Biological Products
Aldehydes
Acetates
Gases
Alcohols
Ions

All Science Journal Classification (ASJC) codes

  • Analytical Chemistry

Cite this

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Determination of Double Bond Position in Conjugated Dienes by Chemical Ionization Mass Spectrometry with Isobutane. / Doolittle, R. E.; Tumlinson, III, James Homer; Proveaux, A.

In: Analytical Chemistry, Vol. 57, No. 8, 01.07.1985, p. 1625-1630.

Research output: Contribution to journalArticle

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