Chemistry of Heterocyclic Compounds p. 1258 - 1262 (1988)
Update date:2022-08-16
Topics:
Terent'ev, P. B.
Stankyavichyus, A. P.
According to mass-spectral data, 9-hydroxy-10-nitrosophenanthrene in the gas phase exists primarily in this tautomeric form rather than in the 9-oxo-10-hydroxyimino tautomeric form, while passing to its 4,5-diaza and, particularly, its 1,8-diaza analogs shifts the equilibrium sharply to favor the o-quinoid form.The character of the fragmentation of the molecular ions of the polycyclic compounds differs markedly from the fragmentation of the acyclic rearrangement product - 2-carboxy-2'-cyanobiphenyl.
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