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Communication | Special issue | Vol 11, No. 1, 1978, pp.401-408
Published online, 1st January, 1970
DOI: 10.3987/S(N)-1978-01-0401
Cycloaddition of Azepine Derivatives with Methoxycarbonyl-2-pyrones

Shigenori Iida,* Toshio Mukai, and Katsuhiro Saito

*Department of Chemistry, Faculty of Science, Tohoku University, Aoba-ku, Ssendai 980-8578, Japan

Abstract

Cycloaddition reactions of 5- or 3-methoxycarbonyl-2-pyrone with 1-ethoxycarbonyl-1H-azepine and 1-ethoxycarbonyl-1H-1,2-diazepine were investigated. The (4+2) and (4+6) type adducts such as 6, 7 and 10 were obtained in addition to the corresponding benzazepine derivatives, 3 and 4, which derived from the (4+2) type adducts.