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Studies in organic mass spectrometry. VIII . The electron impact mass spectra of 2,4‐substituted‐3‐diazo‐5‐phenylpyrroles
Author(s) -
Ceraulo L.,
Agozzino P.,
Ferrugia M.,
Plescia S.,
Sprio V.
Publication year - 1990
Publication title -
journal of heterocyclic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.321
H-Index - 59
eISSN - 1943-5193
pISSN - 0022-152X
DOI - 10.1002/jhet.5570270203
Subject(s) - chemistry , benzonitrile , mass spectrum , fragmentation (computing) , electron ionization , mass spectrometry , diazo , ion , polyatomic ion , spectral line , vaporization , ring (chemistry) , photochemistry , analytical chemistry (journal) , medicinal chemistry , organic chemistry , chromatography , physics , astronomy , computer science , ionization , operating system
The electron impact mass spectra (75 eV) of the β‐diazopyrroles always show the molecular ions and undergo as the main fragmentation process the elimination of nitrogen followed by ring opening reactions leading to benzonitrile either as neutral or charged species. The peaks at 26 amu below the molecular ions, which are a general feature of these spectra, are due to the presence of the corresponding pyrroles which are formed by reductive reactions during the vaporization process of the samples.