3-chloro-benzenecarboperoxoic acid in dichloromethane T=0°C; 3 h;

1: 77 percent / KOH / methanol / 2 h / Ambient temperature 2: 72 percent / CF3COOH, Et3SiH / CH2Cl2 / 7 h / Ambient temperature 3: 95 percent / m-chloroperbenzoic acid / CH2Cl2 / 3 h / 0 °C View Scheme

1: 72 percent / CF3COOH, Et3SiH / CH2Cl2 / 7 h / Ambient temperature 2: 95 percent / m-chloroperbenzoic acid / CH2Cl2 / 3 h / 0 °C View Scheme

3-chloro-benzenecarboperoxoic acid in N,N-dimethyl-formamide Ambient temperature;