MASS-SPECTROMETRIC STUDY OF SOME PYRAZOLINE DERIVATIVES

Authors
SAAD EF HAMADA NM SHARAF SM ELSADANY SK MOUSSA AM ELBA M
Citation
Ef. Saad et al., MASS-SPECTROMETRIC STUDY OF SOME PYRAZOLINE DERIVATIVES, Rapid communications in mass spectrometry, 12(13), 1998, pp. 833-836
Citations number
16
Categorie Soggetti
Spectroscopy,"Chemistry Analytical
Journal title
Rapid communications in mass spectrometry → ACNP
ISSN journal
09514198
Volume
12
Issue
13
Year of publication
1998
Pages
833 - 836
Database
ISI
SICI code
0951-4198(1998)12:13<833:MSOSPD>2.0.ZU;2-C
Abstract
The structures of some new carboxamide, thiocarboxamide, nicotinoyl an d isonicotinoyl pyrazoline derivatives have been related to their mass spectral data. The ions produced under electron impact showed both th e characteristic pyrazoline ion and unusual azete fragmentation patter ns. These results suggest that the mass spectra of these pyrazoline de rivatives are both position and substituent dependent. Fragmentations of the ions are discussed in view of their metastable transitions. (C) 1998 John Wiley & Sons, Ltd.