1.1: sodium carbonate / chloroform; water / 0.25 h / 0 - 5 °C 1.2: 0.75 h / -45 - -35 °C 1.3: 0 - 50 °C 2.1: sodium carbonate / water / 25 - 30 °C / pH 9.5 3.1: hydrogen / palladium 10 on activated carbon / ethyl acetate / 6 h / 25 - 30 °C / 2206.72 - 2942.29 Torr / autoclave View Scheme