Diels−Alder Cycloaddition of 11-Oxapentacyclo[6.5.2.23,6.02,7.09,13]- heptadeca-4,14,16-triene-4,5-dicarboxylic Anhydride with Cyclopentadiene and the Transannular Reactions of the Resulting Cycloadducts
Diels−Alder Cycloaddition of 11-Oxapentacyclo[6.5.2.23,6.02,7.09,13]- heptadeca-4,14,16-triene-4,5-dicarboxylic Anhydride with Cyclopentadiene and the Transannular Reactions of the Resulting Cycloadducts
The Diels–Aldercycloadditions of facially dissymmetric sesquibicyclo[2.2.2]octadiene-fused maleicanhydride 1 with exocyclic 1,3-butadienes have been studied. The reactions proceeded via syn-side (relative to the etheno-bridge in 1) attack of the diene upon 1.