3-chloro-benzenecarboperoxoic acid in dichloromethane T=-25°C; 20 h;

in tetrahydrofuran Irradiation (UV/VIS); photolysis (400-W Hg lamp, 0°C, 2 h);

1: 95 percent / 0.4M CeCl3*7H2O, Na-boranate / methanol / 0.17 h / Ambient temperature 3: 70 percent / 77percent m-chloroperbenzoic acid / CH2Cl2 / 20 h / -25 °C View Scheme

Hydrogenation;