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Report | Regular issue | Vol 23, No. 6, 1985, pp.1509-1512
Published online, 1st January, 1970
DOI: 10.3987/R-1985-06-1509
Mono- and Di-substituted 3-Aza-α-tropolones

Yoshie Horiguchi, Takehiro Sano,* and Yoshisuke Tsuda

*Showa Pharmaceutical University, 3-3165, Higashi-tamagawagakuen, Machida, Tokyo 194-8543, Japan


New mono- and di-substituted 3-aza-α-tropolones 6 were synthesized by deethoxycarbonylation and subsequent DDQ oxidation of dihydroazatropolones 4. In methanol, 6 undergoes a skeletal rearrangement to give methyl pyridine-2-carboxylates 7, suggesting that the reaction is characteristic of the azatropolone nucleus.