3-chloro-benzenecarboperoxoic acid in dichloromethane 1.) 0 deg C, 5 h, 2.) RT, 15 h;

1: 1.) n-butyllithium, 2.) SCl2 / 1.) hexane, ether, -78 deg C, 30 min, 2.) THF, -78 deg C, 1 h 2: 20 percent / m-CPBA / CH2Cl2 / 1.) 0 deg C, 5 h, 2.) RT, 15 h View Scheme

in chloroform T=75°C; further solvents; kinetic deuterium isotope effect; Rate constantMechanism;