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Communication | Regular issue | Vol 48, No. 3, 1998, pp.421-425
Published online, 1st January, 1970
DOI: 10.3987/COM-97-8064
Concentration Effect on the Stereoselectivity of [4+2] Cycloaddition Reactions of 3-Cyano-γ-benzopyrone Derivatives with Electron Rich Dienes

Richard P. Hsung*

*Department of Chemistry, Institute of Technology, University of Minnesota, Kolthoff and Smith Halls 207 Pleasant Street S. E. Minneapolis, MN 55455-0431, U.S.A.

Abstract

The stereoselectivity of [4+2] cycloaddition reactions of 3-cyano-γ-benzopyrone derivatives with electron rich dienes was found to be influenced by the reaction concentrations of γ-benzopyrone derivatives.