Premium
Electron impact induced fragmentation of ( p ‐substituted phenyl)‐(4′‐methylphenacyl) sulfones: contribution of sulfinate ester rearrangements
Author(s) -
Pihlaja Kalevi,
Ovcharenko Vladimir,
Zakrzewski Andrzej,
Gawinecki Ryszard
Publication year - 2000
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 - 10.1002/1097-0231(20000930)14:18<1674::aid-rcm81>3.0.co;2-z
Subject(s) - chemistry , sulfone , fragmentation (computing) , ion , electron ionization , medicinal chemistry , stereochemistry , polymer chemistry , organic chemistry , computer science , ionization , operating system
The molecular ions of the title compounds are usually very unstable. The main fragmentation corresponds to the formation of p ‐MeC 6 H 4 CO + as would be expected. Another abundant fragment ion was [M − SO 2 ] + which is formed both from the original sulfone and from the rearranged sulfinate esters. There are, however, three primary ions which can be traced back to each isomeric molecular ion: p ‐RC 6 H 4 SO 2 + to the original sulfone, p ‐RC 6 H 4 SO + to the ..CH 2 S(=O)O‐.. type sulfinate ester and p ‐RC 6 H 4 OH +· to the ..CH 2 OS(=O).. type sulfinate ester of which the latter seems by far to dominate. Copyright © 2000 John Wiley & Sons, Ltd.