hydrogen; palladium on activated charcoal in tetrahydrofuran T=20°C; P=2068.59 Torr; 2 h;

1: 83 percent / N-bromosuccinimide; conc. H2SO4 / 2 h / 80 - 90 °C 2: 82 percent / methanol / 2 h / Heating 3: 92 percent / K2CO3 / palladium(II) acetate / acetone; H2O / 4 h / Heating 4: 100 percent / H2 / Pd/C / tetrahydrofuran / 2 h / 20 °C / 2068.59 Torr View Scheme

1: 92 percent / K2CO3 / palladium(II) acetate / acetone; H2O / 4 h / Heating 2: 100 percent / H2 / Pd/C / tetrahydrofuran / 2 h / 20 °C / 2068.59 Torr View Scheme

1: 82 percent / methanol / 2 h / Heating 2: 92 percent / K2CO3 / palladium(II) acetate / acetone; H2O / 4 h / Heating 3: 100 percent / H2 / Pd/C / tetrahydrofuran / 2 h / 20 °C / 2068.59 Torr View Scheme