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Competitive Rearrangements. Part 3. Neopentylic versus Skeletal Rearrangement in the Reaction of t-Butyl-dibenzobicyclo(2.2.2) octatriene with Acids. -Neopentylic rearrangement of the title compound (I) leads to the hydrocarbon (II) whose structure is ascribed on the basis of NMR (no yield given). -(BRAVERMAN, S.; GOTTLIEB, H.; IONICA, I.; FILIP, P.; BADEA, F.; DINULESCU, I. G.; Rev. Roum. Chim. 39 (1994) 4, 387-390; Inst. Org. Chem. "G. D. Nenitzescu", RO-71141 Bucharest 15, Rom.; EN)

Competitive Rearrangements. Part 5. The Rearrangement of 7-(1'-Hydroxy-isopropyl)-dibenzo[a,d]bicyclo[2.2.2]octadiene to a Fused Anthracene.-The title alcohol (I) undergoes a novel cationic rearrangement on treatment with TfOH furnishing the fused anthracene derivative (III). A plausible reaction mechanism is proposed. -(TRANDAFIR, C. V.; IONICA, I.; IANCU, A.; BADEA, F.; DINULESCU, I. G.; Rev. Roum. Chim. 43 (1998) 6, 573-576; Nenitescu Inst. Org. Chem., Roum. Acad., RO-71141 Bucharest, Rom.; EN)