AN UNEXPECTED METHYL LOSS OBSERVED IN ELECTRON IONIZATION OF CHALCONES

Authors
ARDANAZ C KAVKA J GUIDUGLI FH FAVRETTO D TRALDI P
Citation
C. Ardanaz et al., AN UNEXPECTED METHYL LOSS OBSERVED IN ELECTRON IONIZATION OF CHALCONES, Rapid communications in mass spectrometry, 12(3), 1998, pp. 139-143
Citations number
15
Categorie Soggetti
Spectroscopy,"Chemistry Analytical
Journal title
Rapid communications in mass spectrometry → ACNP
ISSN journal
09514198
Volume
12
Issue
3
Year of publication
1998
Pages
139 - 143
Database
ISI
SICI code
0951-4198(1998)12:3<139:AUMLOI>2.0.ZU;2-1
Abstract
A careful analysis of the electron ionization mass spectra of chalcone s reveals the presence of [M-15](+.) and [M-16](+) ions which, by coll ision experiments, accurate mass measurements and deuterium labelling have been proved to originate by primary methyl and methane loss respe ctively, These findings suggest the existence of a population of molec ular ions of chalcone exhibiting a structure different from the dibenz o-cycloheptadienone structure proposed in the literature. (C) 1998 Joh n Wiley & Sons, Ltd.