1: 61 percent / iron powder / acetic acid / 3 h / 80 - 90 °C 2: 95 percent / 2 N NaOH / tetrahydrofuran; methanol / 24 h / Ambient temperature 3: 68 percent / 6 N HCl / methanol / 3 h / Heating 4: 75 percent / hydrogen / Pd on carbon (10percent) / methanol; tetrahydrofuran / 12001 Torr View Scheme

1: 61 percent / iron powder / acetic acid / 3 h / 80 - 90 °C 2: 80 percent / hydrogen / Pd on carbon (10percent) / methanol; tetrahydrofuran / 12001 Torr View Scheme

1: 61 percent / iron powder / acetic acid / 3 h / 80 - 90 °C 2: 95 percent / 2 N NaOH / tetrahydrofuran; methanol / 24 h / Ambient temperature 3: SOCl2 / toluene / 2 h / 90 °C 4: 1 h / Heating 5: 85 percent / hydrogen / Pd on carbon (10percent) / methanol; tetrahydrofuran / 12001 Torr View Scheme

iron in acetic acid T=50 - 80°C; 16 h;

1: 61 percent / iron powder / acetic acid / 3 h / 80 - 90 °C 2: 95 percent / 2 N NaOH / tetrahydrofuran; methanol / 24 h / Ambient temperature View Scheme

1: 61 percent / iron powder / acetic acid / 3 h / 80 - 90 °C 2: 95 percent / 2 N NaOH / tetrahydrofuran; methanol / 24 h / Ambient temperature 3: SOCl2 / toluene / 2 h / 90 °C View Scheme

1: 61 percent / iron powder / acetic acid / 3 h / 80 - 90 °C 2: 95 percent / 2 N NaOH / tetrahydrofuran; methanol / 24 h / Ambient temperature 3: SOCl2 / toluene / 2 h / 90 °C 4: 1 h / Heating View Scheme