1: 1.) n-BuLi / 1.) THF, hexane, -78 deg C, 30 min, 2.) THF, hexane, 30 min 2: 35 percent / acetone / 1.3 h / Irradiation 3: 1.) m-CPBA / 1.) CH2Cl2, -78 deg C, 40 min, 2.) CCl4, 70 deg C, 1 h View Scheme

1: 35 percent / acetone / 1.3 h / Irradiation 2: 1.) m-CPBA / 1.) CH2Cl2, -78 deg C, 40 min, 2.) CCl4, 70 deg C, 1 h View Scheme

3-chloro-benzenecarboperoxoic acid 1.) CH2Cl2, -78 deg C, 40 min, 2.) CCl4, 70 deg C, 1 h; Yield given. Multistep reaction;