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Differentiation among some isomeric di‐ and trifunctional aromatic amines by plasma desorption mass spectrometry
Author(s) -
Bouchonnet Stéphane,
Hoppilliard Yannik,
Maret Agnès
Publication year - 1993
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.1210280906
Subject(s) - chemistry , protonation , mass spectrum , mass spectrometry , regioselectivity , desorption , electron ionization , ion , aromaticity , field desorption , medicinal chemistry , ionization , photochemistry , organic chemistry , molecule , chromatography , catalysis , adsorption
Isomeric di‐ and trifunctional aromatic amines are easily differentiated on the basis of their plasma desorption (PD) mass spectra. Six series of aromatic amines were studied in the positive‐ion mode. In each series, the differences observed in the PD mass spectra allow each isomer to be characterized. In the formation of molecular ions, these differences proceed from the competition between electron impact ionization and protonation. Several chemoselective or regioselective reactions such as hydrogenation, hydration, dimerization and some fragmentations also allow isomeric aromatic amines to be differentiated.