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Electron‐impact‐induced fragmentation of some phthalazinone derivatives
Author(s) -
Bruck Péater,
Tamás József,
Körmendy Kármenoly
Publication year - 1974
Publication title -
organic mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.475
H-Index - 121
eISSN - 1096-9888
pISSN - 0030-493X
DOI - 10.1002/oms.1210090313
Subject(s) - fragmentation (computing) , intramolecular force , chemistry , fission , ion , mass spectrum , alkyl , polyatomic ion , tricyclic , electron ionization , stereochemistry , ring (chemistry) , medicinal chemistry , crystallography , organic chemistry , physics , nuclear physics , computer science , neutron , ionization , operating system
The mass spectra of 4‐(ω‐hydroxyalkylamino)‐phthalazinone derivatives (I to IV) have been studied. The most important primary fragmentation process is the fission of the alkyl chain β to the amino group, combined with an intramolecular cyclisation reaction. This process results an ion of tricyclic structure, possessing a 4‐membered ring, as was established by partial 15 N labelling.
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