hydrogen; palladium dihydroxide in methanol T=20°C; P=5320 Torr; 48 h;

1: 99 percent / NCS / CH2Cl2 / 14 h / -20 °C 2: HN=C(NMe2)2 / benzene / 17 h / 20 °C 3: 82 percent / NH2OH*HCl / tetrahydrofuran; H2O / 0.25 h / 20 °C View Scheme

1: 99 percent / NCS / CH2Cl2 / 14 h / -20 °C 2: HN=C(NMe2)2 / benzene / 17 h / 20 °C 3: NH2OH*HCl / tetrahydrofuran; H2O / 0.25 h / 20 °C View Scheme