1: 2.) 15percent H2O2 / 1.) CCl4, irradiation, 1.5 h, 2.) CH2Cl2, 30 min, 0 deg C then 30 min, RT 2: 2.) 1percent HCl / 1.) xylene, reflux, 20 h, 2.) THF, RT, 5 h View Scheme

1: 2.) 15percent H2O2 / 1.) CCl4, irradiation, 1.5 h, 2.) CH2Cl2, 30 min, 0 deg C then 30 min, RT 2: 2.) 1percent HCl / 1.) xylene, reflux, 20 h, 2.) THF, RT, 5 h View Scheme

hydrogenchloride 1.) xylene, reflux, 20 h, 2.) THF, RT, 5 h; Yield given. Yields of byproduct given;