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Mass spectral fragmentation patterns of some new benzo[b]thiophene‐ and thieno[2,3‐b]thiophene‐2,5‐dicarbonyldichlorides and ‐dicarbonyldianilides and anilidoquinolones
Author(s) -
KarminskiZamola Grace,
Dogan Jasna,
Boykin David W.,
Bajić Miro
Publication year - 1995
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.1290090406
Subject(s) - thiophene , chemistry , fragmentation (computing) , cleavage (geology) , bond cleavage , ion , molecule , mass spectrum , stereochemistry , electron ionization , medicinal chemistry , organic chemistry , catalysis , geotechnical engineering , fracture (geology) , computer science , engineering , ionization , operating system
The electron impact mass spectra of some benzo[b]thiophene‐ and thieno[2,3‐b]thiophene‐2,5‐dicarbonyldichlorides, 2,5‐dicarbonyldianalides, 9‐anilido‐benzo[b]thienyl[2,3‐c]quinolones and 9‐anilido‐thieno[4,5‐b′]thienyl[2,3‐c]quinolones are discussed. Dominant peaks in dianilides are formed by cleavage of the CN bond on one side of the anilido group, as well as on the anilido group itself in anilidoquinolones. These ions fragment further by the cleavage of a CC bond in dianilides and the CONRPh group is lost directly, while the quinolonic part of the molecule in quinolones fragments with low probability. Characteristic fragment ions of dicarbonyldichlorides arise by the cleavage of the CCl bond.