1: 1) AlCl3, 2) 10percent HCl / 1) benzene, temp ,40 deg C, 2) benzene, 1 h, 50 deg C 2: 48percent HBr / 15 h / Ambient temperature 3: 48 percent / NaOMe / methanol / 24 h / Heating View Scheme

1: 1) AlCl3, 2) 10percent HCl / 1) benzene, temp ,40 deg C, 2) benzene, 1 h, 50 deg C 2: 48percent HBr / 15 h / Ambient temperature View Scheme