1: 99 percent / 1,8-diazabicyclo<5.4.0>undex-7-ene / CHCl3 / 1 h / Ambient temperature 2: 58 percent / H2 / palladium on charcoal (10percent) / diethyl ether / 2 h / 760 Torr View Scheme

Multi-step reaction with 2 steps 1: 3 percent / m-chloroperbenzoic acid (85percent) / CH2Cl2 / 1.) -23 deg C, 15 min; 2.) -20 deg C, 2 days2: 100 percent / boron trifluoride etherate / CHCl3 / 0.4 h / 40 °C  

Multi-step reaction with 3 steps 1: 79 percent / sodium hydroxide / ethanol; H2O / 18 h / Ambient temperature2: 3 percent / m-chloroperbenzoic acid (85percent) / CH2Cl2 / 1.) -23 deg C, 15 min; 2.) -20 deg C, 2 days3: 100 percent / boron trifluoride etherate / CHCl3 / 0.4 h / 40 °C