Multi-step reaction with 2 steps 1: 71 percent / H2O2 / methanol / 1.) 0 deg C, 1 h, 2.) r.t., overnight2: 1.) HBr, NaNO2, 2.) CuBr, HBr / 1.) H2O, 0-5 deg C, 20 min, then 15-20 deg C, 15 min 2.) H2O, r.t., 30 min  

Multi-step reaction with 2 steps 1: 1.) conc. H2SO4, NaNO2 / 1.) ethanol, H2O, 0-5 deg C, 2.) ethanol, H2O, 80 deg C, 20 min2: 4 percent / Br2, Ag2SO4, conc. H2SO4 / Ambient temperature