1: 63 percent / hydrogen / 5percent palladium on calcium carbonate / methanol / 760 Torr / Ambient temperature 2: 30 percent / 50percent suspension of sodium hydride in oil / 1,2-dimethoxy-ethane 3: alkali / aq. ethanol 4: 31 percent / diethyl ether / 0.25 h / 0 °C View Scheme

in diethyl ether T=0°C; 0.25 h;

1: 30 percent / 50percent suspension of sodium hydride in oil / 1,2-dimethoxy-ethane 2: alkali / aq. ethanol 3: 31 percent / diethyl ether / 0.25 h / 0 °C View Scheme

1: 30 percent / 50percent suspension of sodium hydride in oil / 1,2-dimethoxy-ethane 2: alkali / aq. ethanol 3: 31 percent / diethyl ether / 0.25 h / 0 °C View Scheme

1: alkali / aq. ethanol 2: 31 percent / diethyl ether / 0.25 h / 0 °C View Scheme