1.1: 99 percent / H2 / Pd/C / 1 h 2.1: 90 percent / LiAlH4 / tetrahydrofuran / 24 h / 20 °C 3.1: O3 / CH2Cl2 / -78 °C 3.2: 93 percent / Me2S / CH2Cl2 / 24 h / 20 °C 4.1: Jones reagent / acetone / 1.5 h / 20 °C 5.1: 156 mg / toluene / 24 h / Heating View Scheme