1: ammonium formate / palladium on carbon / isopropyl alcohol / 1 h / Inert atmosphere; Reflux 2: water; hydrogen bromide / methanol / 100 °C / 15 - 22.5 Torr 3: water; hydrogen bromide / 17 h / 105 °C View Scheme

ammonium formate; palladium on carbon in isopropyl alcohol 1 h; Inert atmosphereReflux; Product distribution / selectivity;

palladium on carbon in methanol; water T=20 - 60°C; 5.75 h;