1: AlCl3 / 1,2-dichloro-ethane 2: 82 percent / acetic acid / toluene; xylene / 4 h / Heating 3: 43 percent / fuming HNO3, conc. H2SO4 / 1.) 0 deg C; 2.) r.t, 25 min View Scheme

1: 82 percent / acetic acid / toluene; xylene / 4 h / Heating 2: 43 percent / fuming HNO3, conc. H2SO4 / 1.) 0 deg C; 2.) r.t, 25 min View Scheme

sulfuric acid; nitric acid 1.) 0 deg C; 2.) r.t, 25 min;