1: 82.4 percent / pyridine / 6 h / Heating 2: 99 percent / ethanolic HCl, H2 / 10percent Pd on charcoal / ethanol / 20 h / 120 °C / 75005.9 Torr 3: 97 percent / iron powder, bromine, iodidne / CH2Cl2 / Ambient temperature; overnight 4: 99 percent / 85percent phosphoric acid, P2O5 / 2 h / 90 °C View Scheme

1: 99 percent / ethanolic HCl, H2 / 10percent Pd on charcoal / ethanol / 20 h / 120 °C / 75005.9 Torr 2: 97 percent / iron powder, bromine, iodidne / CH2Cl2 / Ambient temperature; overnight 3: 99 percent / 85percent phosphoric acid, P2O5 / 2 h / 90 °C View Scheme

1: 97 percent / iron powder, bromine, iodidne / CH2Cl2 / Ambient temperature; overnight 2: 99 percent / 85percent phosphoric acid, P2O5 / 2 h / 90 °C View Scheme

hydrogen; N-ethyl-N,N-diisopropylamine; 10 palladium on active carbon in ethanol 0.166667 h; Ambient temperature;