1: 92 percent / Li/liquid ammonia, isopropanol / tetrahydrofuran / 1.) -50 deg C, 1h 2.) -35 deg C, 2h 2: 94 percent / 60percent aq.HClO4 / dioxane; H2O / 10 h / Ambient temperature View Scheme

With  ammonia; lithium; isopropyl alcohol in  tetrahydrofuran  1.) -50 deg C, 1h 2.) -35 deg C, 2h;