Mass spectral fragmentation patterns of new 5-acetyl-4-aryl-6-methyl-2(1H)pyridones

Authors
Martinez, R Suarez, M Martin, N Ochoa, E Seoane, C Verdecia, Y
Citation
R. Martinez et al., Mass spectral fragmentation patterns of new 5-acetyl-4-aryl-6-methyl-2(1H)pyridones, RAP C MASS, 13(21), 1999, pp. 2180-2182
Citations number
9
Categorie Soggetti
Spectroscopy /Instrumentation/Analytical Sciences
Journal title
RAPID COMMUNICATIONS IN MASS SPECTROMETRY
ISSN journal
09514198 → ACNP
Volume
13
Issue
21
Year of publication
1999
Pages
2180 - 2182
Database
ISI
SICI code
0951-4198(1999)13:21<2180:MSFPON>2.0.ZU;2-T
Abstract
The electron impact mass spectra of new 5-acetyl-4-aryl-6-methyl-2(1H)pyrid ones have been studied. A dominant peak in all the spectra is due to cleava ge of the CO-NH bond of the amido group with charge retention on the carbon yl group. This fragmentation is followed by a hydrogen rearrangement to the nitrogen atom forming ketene intermediates; this pathway leads to a highly stabilized ion which constitutes the base peak in the spectra in most of t he compounds studied. Copyright (C) 1999 John Wiley & Sons, Ltd.