1: 85 percent / SOCl2 / CHCl3 / 0.5 h / Heating 2: 98 percent / dimethylformamide / 2 h / 60 °C 3: H2 / 5percent Pd/C / ethyl acetate / 760 Torr 4: 1.) aq. HBr, NaNO2, 2.) Cu2O / 1.) acetone, 5 deg C, 2.) acetone 5: 38 percent / NaOAc / ethanol / 5 h / Heating 6: 79 percent / 4N HCl / 24 h / Heating View Scheme