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Ortho effects in organic molecules on electron impact part 22. Competing oxygen transfers from the nitro group to sulphur and the olefinic double bond in 2‐nitrophenyl styryl sulphides
Author(s) -
Ramana D. V.,
Sundaram N.,
George M.
Publication year - 1990
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.1210250308
Subject(s) - chemistry , double bond , sulfur , fragmentation (computing) , nitro , ion , molecule , oxygen , group (periodic table) , electron transfer , photochemistry , medicinal chemistry , organic chemistry , alkyl , computer science , operating system
Double oxygen migration to sulphur from the ortho ‐nitro group leading to eliminations of SO 2 and · SO 2 H from the molecular ions and single oxygen transfer to the olefinic double bond in the side‐chain giving rise to the most abundant ion at m/z 138 have been observed in 2‐nitrophenyl styryl sulphides on electron impact. The proposed fragmentation mechanisms and the product ion structures were confirmed with the aid of high‐resolution data, B/E linked scan and CID spectra.