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Communication | Regular issue | Vol 16, No. 9, 1981, pp.1499-1502
Published online, 1st January, 1970
DOI: 10.3987/R-1981-09-1499
Synthesis of Vinyl-substituted Indolizine Derivatives by a Novel Reaction of Indolizines with Ethoxyethylenes Having Electron Withdrawing Substituents

Yoshiro Yamashita, Daisuke Suzuki, and Mitsuo Masumura*

*Department of Applied Chemistry, Faculty of Engineering, University of Tokushima, Minamijosanjima-cho, Tokushima 770-8506, Japan


Reactions of indolizine derivatives with electron deficient ethoxyethylenes such as ethoxymethylenemalononitrile gave vinyl-substituted indolizines 3 by the Michael type addition reaction followed by ethanol elimination. Hydrolisis of 3-dicyanovinylindolizines afforded 3-formylindolizines.