1.1: AlCl3, aluminium chloride; N,N-diethylaniline / dichloromethane / -10 - 0 °C 2.1: 3-chloro-benzenecarboperoxoic acid / dichloromethane / 0 - 20 °C 2.2: 16 h / 20 °C 3.1: toluene-4-sulfonic acid / 2 h / 20 °C / Large scale reaction View Scheme

AlCl3, aluminium chloride; N,N-diethylaniline in dichloromethane T=-10 - 0°C;

1.1: AlCl3, aluminium chloride; N,N-diethylaniline / dichloromethane / -10 - 0 °C 2.1: 3-chloro-benzenecarboperoxoic acid / dichloromethane / 0 - 20 °C 2.2: 16 h / 20 °C View Scheme