On the structure of "5-nitrosotropolone".
It has long been discussed whether "5-nitrosotropolone" 1 takes the nitroso structure 1A or the tautomeric oxime structure 1B. Analysis of NMR and UV spectra data in this study indicates that the tropoquinone-5-monoxime 1B is preferred. The UV absorption shift to longer wavelength at dilute solutions is attributable to the dissociated form 3.
Ito
Ai
A
Research Foundation Itsuu Laboratory, 2-28-10 Tamagawa, Setagaya-ku, Tokyo 158-0094, Japan.
Muratake
Hideaki
H
Shudo
Koichi
K