pyridinium chlorochromate in dichloromethane T=20°C; 10 h;

1: 95 percent / diethyl ether / 2 h / 0 °C 2: 98 percent / lithium aluminum hydride / diethyl ether / 2 h / 20 °C 3: 77 percent / PCC / CH2Cl2 / 10 h / 20 °C View Scheme

1: 98 percent / lithium aluminum hydride / diethyl ether / 2 h / 20 °C 2: 77 percent / PCC / CH2Cl2 / 10 h / 20 °C View Scheme