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Mass spectra of 1,2,4‐triazoles—II: Alkyl 1,2,4‐triazoles
Author(s) -
Blackman A. J.,
Bowie J. H.
Publication year - 1973
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.1210070110
Subject(s) - alkyl , chemistry , mass spectrum , fragmentation (computing) , ring (chemistry) , ion , triazole , cleavage (geology) , nitrogen atom , nitrogen , stereochemistry , medicinal chemistry , organic chemistry , materials science , fracture (geology) , computer science , composite material , operating system
The mass spectra of monomethyl 1,2,4‐triazoles contain fragment ions produced by specific cleavage of the heterocyclic ring. A major fragmentation from many molecular ions involves the elimination of HCN, but loss of N 2 is either very small or completely absent. No N or H scrambling occurs within the triazole ring system, as evidenced by labelling studies. The loss of a hydrogen atom from the molecular ions of 3‐alkyl‐1,2,4‐triazoles (alkyl ⩾ C 2 H 5 ) originates from hydrogens attached to the β carbon and nitrogen atoms.