Hexaphenylsilacyclopentadiene may undergo π4s+π2s cycloaddition with ethyl acrylate to form bicyclosilaheptene. The same study reports similar cycloaddition reactions with various dienophiles. The reaction of hexaphenylsilacyclopentadiene with perbenzoic acid yields a mixture of tetraphenylfuran and cis-dibenzoylstilbene.