1: 97 percent / HCl / 1 h / 20 °C 2: 93 percent / tetrahydrofuran / 3 h / 20 °C 3: 1.) MCPBA / 1.) CHCl3, 0 deg C, 30 min, 2.) r.t., 24 h 4: 86 percent / H2 / 5percent Rh/Al2O3 / ethanol / 20 h / 20 °C / 4560 Torr 5: 47 percent / POCl3, pyridine / 20 °C 6: 56 percent / Na, NH3 / tetrahydrofuran / 1.5 h / -78 °C View Scheme

1: 91 percent / LiAlH4 / diethyl ether / 2.5 h / 0 °C 2: 1.) MCPBA / 1.) CHCl3, 0 deg C, 30 min, 2.) r.t., 48 h 3: 94 percent / Na, NH3 / tetrahydrofuran / 1.5 h / -78 °C 4: 70 percent / H2 / 5percent Rh/Al2O3 / ethanol / 18 h / 20 °C / 3800 Torr View Scheme