1: With lithium aluminium tetrahydride in tetrahydrofuran T=0 - 20°C; 2: With water; sodium hydroxide in tetrahydrofuran 0.5 h;

1.1: lithium hexamethyldisilazane / tetrahydrofuran / 1.5 h / 0 - 5 °C 1.2: 2.5 h / 0 - 20 °C 1.3: 0 °C 2.1: lithium aluminium tetrahydride / tetrahydrofuran / 0 - 20 °C 2.2: 0.5 h View Scheme