1.1: sulfuric acid / dichloromethane; water / 3.25 h / -10 - 0 °C / Cooling with ice 1.2: pH 8 - 9 2.1: ammonium formate / palladium on carbon / isopropyl alcohol / 1 h / Inert atmosphere; Reflux 3.1: water; hydrogen bromide / methanol / 100 °C / 15 - 22.5 Torr 4.1: water; hydrogen bromide / 17 h / 105 °C View Scheme

1.1: sulfuric acid / dichloromethane; water / 3.25 h / -10 - 0 °C / Cooling with ice 1.2: pH 8 - 9 2.1: ammonium formate / palladium on carbon / isopropyl alcohol / 1 h / Inert atmosphere; Reflux View Scheme