M. Umehara, H. Honnami, S. Hishida
Oct 1, 1993
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Journal
Bulletin of the Chemical Society of Japan
Abstract
The five cis/trans isomers of C6–C8–C5 fused ring compound, tricyclo[9.4.0.04,8]pentadecane-2,9-dione were synthesized by photocycloaddition of decalin-1,3-dione to cyclopentene. The conformational analyses were carried out by MM2 and the results were compared with X-ray analyses. The eight-membered rings take predominantly boat-chair forms although those in C5–C8–C5 fused ring compounds exist in various conformations.