2]Paracyclophanyl)ethanol (505 mg, 2.00 mmol, 1.00 equiv.) and neutral aluminum oxide (1.02 g, 10.0 mmol, 5.00 equiv.) that had been activated at 155 °C for 18 h under high vacuum, were suspended in toluene (30 mL). The mixture was heated to 120 °C for 18 h under the removal of water using a DEAN-STARK trap. The solvent was removed under reduced pressure, and the obtained powder was filtered over a short silica plug using n-pentane/EtOAc, 4:1 as eluent, to obtain the title compound (418 mg, 1.78 mmol, 89%) as a colorless solid.