boron trifluoride diethyl etherate; mercury(II) oxide; trichloroacetic acid in ethanol 2 h; Ambient temperature;

3-chloro-benzenecarboperoxoic acid in dichloromethane T=20°C; Epoxidation;

1: 52 percent / NaH (60 percent in mineral oil) / tetrahydrofuran / 1 h 2: 90 percent / Grubbs' catalyst / CH2Cl2 / 0.5 h / 20 °C 3: 29 percent / MCPBA / CH2Cl2 / 20 °C View Scheme

1: 90 percent / Grubbs' catalyst / CH2Cl2 / 0.5 h / 20 °C 2: 29 percent / MCPBA / CH2Cl2 / 20 °C View Scheme