1: 55 percent / isoamyl nitrite, CH2I2 / 0.33 h / 100 °C 2: (PhCN)2PdCl2 / acetonitrile / 14 h / 100 °C 3: NH3 / methanol 4: 70 percent / NH3 / methanol / 12 h / 120 °C 5: 91 percent / tetrabutylammonium fluoride / tetrahydrofuran / 2 h / Ambient temperature View Scheme