1: 93 percent / 3-chlorobenzoperoxoic acid / CH2Cl2 / 1.) 0 deg C, 2.) room temp., 1 h 2: 79 percent / p- toluenesulfonic acid / CCl4 / 0.33 h / Heating 3: 83 percent / Raney nickel / ethanol / 2 h / Heating View Scheme