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Mass spectrometry of some carbamoyl‐ and thiocarbamoylcyclohexanones
Author(s) -
Srzić D.
Publication year - 1989
Publication title -
rapid communications in mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.528
H-Index - 136
eISSN - 1097-0231
pISSN - 0951-4198
DOI - 10.1002/rcm.1290030705
Subject(s) - chemistry , fragmentation (computing) , electron ionization , deuterium , tautomer , mass spectrometry , keto–enol tautomerism , enol , mass spectrum , labelling , ion , mass , ionization , analytical chemistry (journal) , chemical ionization , collision induced dissociation , computational chemistry , chromatography , tandem mass spectrometry , stereochemistry , organic chemistry , atomic physics , biochemistry , physics , computer science , catalysis , operating system
Abstract The fragmentation of some carbamoyl‐ and thiocarbamoylcyclohexanones under electron ionization has been investigated by means of high‐ and low‐resolution mass spectrometry and deuterium labelling. Some characteristic fragmentation processes observed in the mass spectra of thiocarbamoylcyclohexanones indicate that both keto and enol forms of their molecular ions exist in the gas phase. The fragmentation data for carbamoylcyclohexanone show that the keto form is largely predominant in the keto‐enol tautomeric equilibrium.