1: 99 percent / Br2 / CHCl3 / 2 h / Ambient temperature 2: 60 percent / polyphosphoric acid / 8 h / 55 °C 3: 96 percent / H2, triethylamine / 7percent Pd-C / ethanol / 3.5 h / Ambient temperature 4: 98 percent / pyridinium chloride / 1 h / 200 °C 5: 95 percent / pyridine / 5 h / Ambient temperature 6: 66 percent / Br2 / CCl4 / 3 h / Ambient temperature 7: 74 percent / LiCl / dimethylformamide / 3 h / Heating 8: K3PO4 / dimethylsulfoxide / 0.5 h / 60 °C 9: 97 percent / 2 M aq.KOH / ethanol 10: 60 percent / acetonitrile / 0.17 h / Ambient temperature; Irradiation View Scheme

1: KOH / ethanol; H2O / 1 h / Heating 2: 88 percent / 0.67 h / 190 °C 3: 99 percent / Br2 / CHCl3 / 2 h / Ambient temperature 4: 60 percent / polyphosphoric acid / 8 h / 55 °C 5: 96 percent / H2, triethylamine / 7percent Pd-C / ethanol / 3.5 h / Ambient temperature 6: 98 percent / pyridinium chloride / 1 h / 200 °C 7: 95 percent / pyridine / 5 h / Ambient temperature 8: 66 percent / Br2 / CCl4 / 3 h / Ambient temperature 9: 74 percent / LiCl / dimethylformamide / 3 h / Heating 10: K3PO4 / dimethylsulfoxide / 0.5 h / 60 °C 11: 97 percent / 2 M aq.KOH / ethanol 12: 60 percent / acetonitrile / 0.17 h / Ambient temperature; Irradiation View Scheme

1: 74 percent / LiCl / dimethylformamide / 3 h / Heating 2: K3PO4 / dimethylsulfoxide / 0.5 h / 60 °C 3: 97 percent / 2 M aq.KOH / ethanol 4: 60 percent / acetonitrile / 0.17 h / Ambient temperature; Irradiation View Scheme

in benzene 2 h; Heating;