1.1: PhCl2(CHPh)(P(C6H11)3)2 / CH2Cl2 / 3 h / Heating 1.2: 98 percent / Pb(OCOCH3)4 / CH2Cl2 2.1: CH3NHOCH3*HCl; (CH3)3Al / tetrahydrofuran / 3 h / 0 °C 2.2: 83 percent / tetrahydrofuran / 8 h / 40 °C 3.1: ((CH3)3Si)2NLi; (C6H5)N(OSO2CF3)2 / tetrahydrofuran; hexamethylphosphoric acid triamide / 0.5 h / -78 °C 3.2: diethyl ether / 1 h / -78 °C 3.3: 75 percent / Li / liquid ammonia; ethanol / 0.17 h / -78 °C 4.1: diisopropyl azodicarboxylate; (C6H5)3P / tetrahydrofuran / 0.5 h / 0 °C 4.2: 67 percent / (NH4)6Mo7O24; H2O2 / ethanol / 3 h / 0 °C 5.1: NaN(Si(CH3)3)2 / tetrahydrofuran; hexamethylphosphoric acid triamide / 3 h / -60 - 0 °C 6.1: LiOH / tetrahydrofuran; H2O / 8 h / 20 °C 6.2: 89 percent / Li / liquid ammonia; ethanol / 0.17 h / -78 °C View Scheme