title: Mass spectral fragmentation patterns of new 5-acetyl-4-aryl-6-methyl-2(1H)pyridones
abstract: The electron impact mass spectra of new 5-acetyl-4-aryl-6-methyl-2(1H)pyridones have been studied. A dominant peak in all the spectra is due to cleavage of the CO-NH bond of the amido group with charge retention on the carbonyl 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 the compounds studied. Copyright 1999 John Wiley & Sons, Ltd.
authors.affiliation: Departamento de Quimica Organica I, Facultad de Quimica, Universidad Complutense, 28040-Madrid, Spain.
authors.initials: R
authors.lastname: Martinez
authors.initials: M
authors.lastname: Suarez
authors.initials: N
authors.lastname: Martin
authors.initials: E
authors.lastname: Ochoa
authors.initials: C
authors.lastname: Seoane
authors.initials: Y
authors.lastname: Verdecia