Short-RInChIKey=SA-FUHFF-UHFFFADPSC-ITQUKLNMBH-UHFFFADPSC-NUHFF-NUHFF-NUHFF-ZZZ

4-[2.2]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 dissolved in toluene (30 mL). The mixture was heated to 120 °C for 18 h under removal of water using a Dean-Stark trap. The solvent was removed under reduced pressure.