6533b823fe1ef96bd127e07f
RESEARCH PRODUCT
Studies in organic mass spectrometry. Part 17—Formation of phenol radical ions by rearrangement of the molecular ions of someN-arylthiophenecarboxamides and -benzamides
Paolo De MariaDomenico SpinelliRosaria SalettiSalvatore FotiMirella FerrugiaLeopoldo Ceraulsubject
Collision-induced dissociationChemistryPolyatomic ionMass spectrumAnalytical chemistryFast atom bombardmentMass spectrometryTandem mass spectrometryPhotochemistrySpectroscopyIon sourceIondescription
It has been shown by exact mass measurements and collision-induced dissociation mass-analysed ion kinetic energy spectra that the structure of the m/z 124 ion observed in the mass spectra of N-(4-methoxyphenyl)thiophene-2-carboxamide, N-(4-methoxyphenyl)thiophene-3-carboxamide, N-(4-methoxyphenyl)-5-nitrothiophene-3-carboxamide and N-(4-methoxyphenyl)benzamide is identical with that of the molecular ion of 4-methoxyphenol. This ion becomes abundant in metastable energy window reactions. A probable mechanism for its formation is discussed.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1995-02-01 | Journal of Mass Spectrometry |