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Communication | Regular issue | Vol 16, No. 6, 1981, pp.889-892
Published online, 1st January, 1970
DOI: 10.3987/R-1981-06-0889
2-Azabicyclo[3.2.0]heptane-3,4-diones (4). Thermal Rearrangement of 3-Ethoxy-2-azabicyclo[3.2.0]hept-2-en-4-ones Leadng to 2-Ethoxy-3,4-dihydropyridines

Takehiro Sano,* Yoshie Horiguchi, and Yoshisuke Tsuda

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

Abstract

Thermolysis of 3-ethoxy-2-azabicyclo[3.2.0]hept-2-en-4-ones yielded 2-ethoxy-3,4-dihydropyridines, which is explained by [1,3] sigmatropic rearrangement followed by cheletropic elimination of CO.