1: 100 percent / pyridine / Ambient temperature; overnight 2: 90 percent / H2 / 5percent Pd/alumina / CH2Cl2 / 24 h 3: 90 percent / LiAlH4 / tetrahydrofuran / 0.5 h / Heating View Scheme

1: 100 percent / pyridine / Ambient temperature; overnight 2: 100 percent / H2 / 5percent Pd/alumina / CH2Cl2 / 5 h 3: 91 percent / LiAlH4 / tetrahydrofuran / 0.5 h / Heating View Scheme

1: 80 percent / pyridine / tetrahydrofuran / 2 h / 0 °C 2: 100 percent / H2 / 5percent Pd/alumina / CH2Cl2 / 3 h 3: 91 percent / LiAlH4 / tetrahydrofuran / 0.5 h / Heating View Scheme

lithium aluminium tetrahydride in diethyl ether 2 h; Ambient temperature;