hydrogen; palladium on activated charcoal in tetrahydrofuran T=20°C; 6 h; atmospheric pressure;

1: 88 percent / nitric acid / 6 h / 20 °C 2: 87 percent / H2SO4 / 0.12 h / 70 °C 3: 69 percent / PCl5 / toluene / 15 h / Heating 4: 100 percent / H2 / Pd/C / tetrahydrofuran / 6 h / 20 °C / atmospheric pressure View Scheme

1: 87 percent / H2SO4 / 0.12 h / 70 °C 2: 69 percent / PCl5 / toluene / 15 h / Heating 3: 100 percent / H2 / Pd/C / tetrahydrofuran / 6 h / 20 °C / atmospheric pressure View Scheme

1: 69 percent / PCl5 / toluene / 15 h / Heating 2: 100 percent / H2 / Pd/C / tetrahydrofuran / 6 h / 20 °C / atmospheric pressure View Scheme