hydrogenchloride 1.5 h; Heating;

hydrogenchloride in ethanol; water T=80°C; 6 h;

1: 100 percent / 5n HCl / 1.5 h / Heating 2: 1./ cc H2SO4, NaNO2, acetic acid, 2./ CuBr, NaBr, 16percent HBr / 1./ water, 1 h. 3-5 deg C. 3: 82 percent / CuCl, K2CO3 / pyridine / 3 h / Heating 4: 92 percent / H2 / Raney-nickel / methanol / 4 h / 52504.2 Torr 5: 94 percent / pyridine / 1./ 3 h. 0 deg C. 2./ room temp. overnight. View Scheme

1: 100 percent / 5n HCl / 1.5 h / Heating 2: 1./ cc H2SO4, NaNO2, acetic acid, 2./ CuBr, NaBr, 16percent HBr / 1./ water, 1 h. 3-5 deg C. 3: 38 percent / CuCl, potassium tert-butoxide / 2-methyl-propan-2-ol / 7 h / Heating 4: 100 percent / H2 / Raney-nickel / methanol / 4 h / 52504.2 Torr View Scheme

1: 100 percent / 5n HCl / 1.5 h / Heating 2: 1./ cc H2SO4, NaNO2, acetic acid, 2./ CuBr, NaBr, 16percent HBr / 1./ water, 1 h. 3-5 deg C. 3: 38 percent / CuCl, potassium tert-butoxide / 2-methyl-propan-2-ol / 7 h / Heating 4: 100 percent / H2 / Raney-nickel / methanol / 4 h / 52504.2 Torr 5: 76 percent / pyridine / 1./ 3 h. 0 deg C. 2./ room temp. View Scheme

1: 97 percent / 2 N aq. HCl / 9 h / 85 °C 2: 97 percent / SnCl2 / ethanol / 2 h / 70 °C View Scheme