Scheme 4. Left: Formation of Dihydronaphthalenes, (E)-Aryl dienes, Dibenzocyclooctenes, and Monobenzocyclooctadienes, Depending on the Substitution Pattern (R2) of the Allyl Moiety of the Substrate. Right: DFT-Calculated Mechanisms for Formation of Monobenzocyclooctadienes (ΔG°333K in kcal mol–1, BP86/def2-TZVP/disp3).
