1: With sulfuric acid in methanol Cooling with ice; 2: With hydrogen; palladium on activated charcoal in methanol T=20°C; P=2585.81 Torr; 23 h; Inert atmosphere; 3: With sodium hydrogencarbonate; potassium carbonate in water pH=9 - 10; Reflux;

1: H2 / Raney nickel / methanol; tetrahydrofuran / 46 h / 50 °C / 2585.7 Torr 2: toluene / 48 h / Heating 3: lithium aluminum hydride / tetrahydrofuran / 1.) RT, 2 d, 2.) reflux, 2 h View Scheme