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Communication | Special issue | Vol 11, No. 1, 1978, pp.287-292
Published online, 1st January, 1970
DOI: 10.3987/S(N)-1978-01-0287
Synthesis of Heptafulvalene and Sesquifulvalene Derivatives Condensed with a Furan Ring

Toyonobu Asao,* Noboru Morita, and Kazuo Kato

*Department of Chemistry, Graduate School of Science, Tohoku University, Aobayama, Sendai 980-8578, Japan

Abstract

Heptafulvalenes (4 and 5) and sesquifulvalenes (8 and 9) condensed with a furan ring have been synthesized by the reaction of cyclic ketenes with furotropones. Physical properties of the fulvalenes were found to be considerably similar to those of the corresponding carbocyclic fulvalenes.