Yasuo Tohda1), Keita Tani, Norihiko Yamawaki, Masahiro Ariga, Nagatoshi Nishiwaki, Katsuroh Kotani, and Eizo Matsumura. Nucleophilic Reaction upon Electron-Deficient Pyridone Derivatives. XII. Novel Additions of 3,5-Dinitro-2-pyridone with Ethyl Vinyl Ether: Formation and Reactions of a Six-membered Cyclic Nitronate // Bulletin of the Chemical Society of Japan. Vol. 66 (1993) , No. 4 pp.1222-1228.
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http://dx.doi.org/10.1246/bcsj.66.1222