Studies in organic mass spectrometry. Part 27. Electron ionisation inducedisomerisation of 3-aryl-4(3H)-quinazolinones

Authors
Ceraulo, L Di Stefano, V Ferrugia, M Ludanyi, K Segreto, S Vekey, K
Citation
L. Ceraulo et al., Studies in organic mass spectrometry. Part 27. Electron ionisation inducedisomerisation of 3-aryl-4(3H)-quinazolinones, RAP C MASS, 15(6), 2001, pp. 433-439
Citations number
29
Categorie Soggetti
Spectroscopy /Instrumentation/Analytical Sciences
Journal title
RAPID COMMUNICATIONS IN MASS SPECTROMETRY
ISSN journal
09514198 → ACNP
Volume
15
Issue
6
Year of publication
2001
Pages
433 - 439
Database
ISI
SICI code
0951-4198(2001)15:6<433:SIOMSP>2.0.ZU;2-5
Abstract
The comparison between 70 eV EI (electron ionisation) mass spectra, MIKE (m ass analysed ion kinetic energy) and CID (collision induced dissociation) M IKE spectra, KER (kinetic energy release) and KERD (kinetic energy release distribution) data for 2-methyl-3-aryl-4(3H)-quinazolinones 1-4, with those of the corresponding 2-methyl-4-aryloxyquinazolines 1'-4', indicates that aryloxy radical as well as hydrogen or methyl radical losses involve the fo rmation of common intermediates. This suggests the occurrence of migrations of aryl groups from the N-3 atom to carboxylic oxygen in the molecular ion s of 1-4. Copyright (C) 2001 John Wiley & Sons, Ltd.