3-chloro-benzenecarboperoxoic acid in dichloromethane T=20°C; 0.0833333 h;

1.1: isopropylmagnesium chloride / tetrahydrofuran / 0.5 h / -30 °C 1.2: SO2 / tetrahydrofuran / 0.5 h / -40 °C 1.3: SO2Cl2 / tetrahydrofuran / -40 - 20 °C 2.1: 304 mg / tetrahydrofuran / 3 h View Scheme

1: H2O 2: HCl gas / Heating View Scheme

in tetrahydrofuran 3 h;

hydrogenchloride Heating;