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Communication | Regular issue | Vol 9, No. 6, 1978, pp.739-744
Published online, 1st January, 1970
DOI: 10.3987/R-1978-06-0739
Ring Transformation of Uracils to 2-Pyridones. Hydrolysis of 6-(2-Dimethylaminovinyl)uracils

Shigeo Senda,* Kosaku Hirota, Tetsuji Asao, and Yoshio Abe

*Gifu Pharmaceutical University, 6-1 Mitahora-higashi 5-chome, Gifu 502-8585, Japan


Hydrolysis of 1,3-disubstituted 6-(2-dimethylaminovinyl)uracil derivatives (I) in aqueous sodium hydroxide caused a novel ring transformation giving 2-pyridone (II) along with 4-methylenepyrimidine (III) or the degradation product (IV or V).