1.1: sodium amide / tetrahydrofuran; hexamethylphosphoric acid triamide / 1.5 h / 20 °C 1.2: 91.52 percent / tetrahydrofuran; hexamethylphosphoric acid triamide / -73 - 20 °C 2.1: 92 percent / lithium aluminum hydride / tetrahydrofuran / 2 h / 0 °C 3.1: 66.64 percent / pyridinium chlorochromate / CH2Cl2 / 3 h / 20 °C View Scheme

1.1: sodium amide / tetrahydrofuran; hexamethylphosphoric acid triamide / 1.5 h / 20 °C 1.2: 91.52 percent / tetrahydrofuran; hexamethylphosphoric acid triamide / -73 - 20 °C 2.1: 92 percent / lithium aluminum hydride / tetrahydrofuran / 2 h / 0 °C 3.1: 66.64 percent / pyridinium chlorochromate / CH2Cl2 / 3 h / 20 °C View Scheme

1: 96 percent / triphenylphosphine, Br2 / CCl4 / 16 h / Ambient temperature 2: 1.) cuprous iodide, 2,2' bipyridyl / 1.) THF, 2 deg C, 10 min, 2.) THF, a) 2 deg C, 2 h, b) RT, 15 h 3: p-toluenesulfonic acid / methanol; H2O / 15 h / 20 °C 4: 94 percent / pyridinium chlorochromate / CH2Cl2 / 1.5 h / Ambient temperature View Scheme

1: 95 percent / diisobutylaluminum hydride / diethyl ether; toluene / 1.5 h / -10 °C 2: 96 percent / triphenylphosphine, Br2 / CCl4 / 16 h / Ambient temperature 3: 1.) cuprous iodide, 2,2' bipyridyl / 1.) THF, 2 deg C, 10 min, 2.) THF, a) 2 deg C, 2 h, b) RT, 15 h 4: p-toluenesulfonic acid / methanol; H2O / 15 h / 20 °C 5: 94 percent / pyridinium chlorochromate / CH2Cl2 / 1.5 h / Ambient temperature View Scheme

1: 1.) cuprous iodide, 2,2' bipyridyl / 1.) THF, 2 deg C, 10 min, 2.) THF, a) 2 deg C, 2 h, b) RT, 15 h 2: p-toluenesulfonic acid / methanol; H2O / 15 h / 20 °C 3: 94 percent / pyridinium chlorochromate / CH2Cl2 / 1.5 h / Ambient temperature View Scheme

1: 63 percent / dilithium tetrachlorocuprate / tetrahydrofuran / 1.) -78 deg C, 2 h, 2.) RT, 15 h 2: 99 percent / 5percent HCl / acetone / 6 h / Ambient temperature 3: 95 percent / diisobutylaluminum hydride / diethyl ether; toluene / 1.5 h / -10 °C 4: 96 percent / triphenylphosphine, Br2 / CCl4 / 16 h / Ambient temperature 5: 1.) cuprous iodide, 2,2' bipyridyl / 1.) THF, 2 deg C, 10 min, 2.) THF, a) 2 deg C, 2 h, b) RT, 15 h 6: p-toluenesulfonic acid / methanol; H2O / 15 h / 20 °C 7: 94 percent / pyridinium chlorochromate / CH2Cl2 / 1.5 h / Ambient temperature View Scheme

1: 99 percent / 5percent HCl / acetone / 6 h / Ambient temperature 2: 95 percent / diisobutylaluminum hydride / diethyl ether; toluene / 1.5 h / -10 °C 3: 96 percent / triphenylphosphine, Br2 / CCl4 / 16 h / Ambient temperature 4: 1.) cuprous iodide, 2,2' bipyridyl / 1.) THF, 2 deg C, 10 min, 2.) THF, a) 2 deg C, 2 h, b) RT, 15 h 5: p-toluenesulfonic acid / methanol; H2O / 15 h / 20 °C 6: 94 percent / pyridinium chlorochromate / CH2Cl2 / 1.5 h / Ambient temperature View Scheme

1: 87 percent / NH3 2: 1) 9-BBN, 2) H2O2, AcONa 3: 88 percent / H2 / Ni-P2 4: 94 percent / PCC View Scheme

1: 87 percent / NH3 2: 1) 9-BBN, 2) H2O2, AcONa 3: 88 percent / H2 / Ni-P2 4: 94 percent / PCC View Scheme

1: 1) 9-BBN, 2) H2O2, AcONa 2: 88 percent / H2 / Ni-P2 3: 94 percent / PCC View Scheme