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Naphthyridine chemistry. VIII . The mass spectra of the 1,X‐naphthyridines and some of their methyl derivatives
Author(s) -
Paudler William W.,
Kress Thomas J.
Publication year - 1967
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.5570040415
Subject(s) - chemistry , mass spectrum , fragmentation (computing) , spectral line , ion , medicinal chemistry , stereochemistry , organic chemistry , physics , operating system , astronomy , computer science
The mass spectra of the four parent 1,X‐naphthyridines, the 2,3 and 4‐monomethyl‐1,5‐,1,6‐. and 1,8‐ naphthyridincs, seven dimethyl‐1,8‐naphthyridines, and one trimethyl‐1,8‐naphthyridine are reported. Evidence for an azatropylium ion intermediate in the fragmentation of the methyl compounds is presented. The fragmentation modes of the naphthyridines are similar to those for the quinolines in addition to several new processes