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Mass spectra of some 3‐substituted coumarins
Author(s) -
SaintRuf Germain,
De Asish,
Brunskill John S. A.,
Jeffrey Howard
Publication year - 1980
Publication title -
journal of heterocyclic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.321
H-Index - 59
eISSN - 1943-5193
pISSN - 0022-152X
DOI - 10.1002/jhet.5570170117
Subject(s) - chemistry , coumarin , pyrone , fragmentation (computing) , mass spectrum , electron ionization , ring (chemistry) , cleavage (geology) , medicinal chemistry , stereochemistry , organic chemistry , mass spectrometry , chromatography , computer science , ion , geotechnical engineering , fracture (geology) , engineering , ionization , operating system
The electron impact mass spectrometric fragmentation pathways for some 3‐substituted derivatives of coumarin, benzo[ f ]coumarin, thieno[3,2‐ f ]coumarin, thieno[2,3‐ h ]coumarin and azacoumarin, viz nitriles, carboxamides, thiocarboxamides and esters were investigated. The initial cleavage of the pyrone ring is found to be largely dependent on the stability, under electron impact, of the attached functional group.