1: 10N aq. HCl, FeCl3 / 2 h / Heating 2: 1.) NBS, AIBN; 2.) Li2CO3, LiF; 3.) I2 View Scheme

1: 10N aq. HCl, FeCl3 / 2 h / Heating 2: 1.) Hg(OAc)2; 2.) 20percent aq. NaOH / 1.) glacial AcOH, reflux, 20-24 h; 2.) MeOH, reflux, 10 min. 3: polyphosphoric acid / xylene / 1 h / 95 - 100 °C View Scheme