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Studies in organic mass spectrometry—V: N‐arylsulphonyliminopyridinium betaines
Author(s) -
Ikeda M.,
Kato S.,
Sumida Y.,
Tamura Y.
Publication year - 1971
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.1210051205
Subject(s) - fragmentation (computing) , chemistry , mass spectrometry , deuterium , polyatomic ion , ion , mass spectrum , labelling , pyridine , cleavage (geology) , analytical chemistry (journal) , high resolution , medicinal chemistry , organic chemistry , chromatography , materials science , physics , atomic physics , biochemistry , remote sensing , fracture (geology) , computer science , composite material , geology , operating system
The mass spectral fragmentation of N‐arylsulphonyliminopyridinium betaines has been rationalized using high resolution mass spectrometry as well as deuterium labelling. The most characteristic features are a very facile NS bond cleavage and skeletal rearrangements accompanied by the expulsion of SO 2 from the molecular ion and the [M1] ion to the corresponding ionized N‐aryliminopyridinium betaines and azacarbazoles, respectively. The presence of methyl substituents at the α‐position of the pyridine ring has a significant effect on the mode of the fragmentation.