1: 34 percent / sodium nitrite / dimethylsulfoxide / 8 h / Ambient temperature 2: 1) aq. NaOH / 1) r.t., 2) DMSO, 5 min at 50 deg C and 21 h at r.t. 3: 12 N HCl, tin / 2.5 h / 65 °C View Scheme

hydrogenchloride; tin T=65°C; 2.5 h; Yield given;

1: 1) aq. NaOH / 1) r.t., 2) DMSO, 5 min at 50 deg C and 21 h at r.t. 2: 12 N HCl, tin / 2.5 h / 65 °C View Scheme

1: 1) aq. NaOH / 1) r.t., 2) DMSO, 5 min at 50 deg C and 21 h at r.t. 2: 12 N HCl, tin / 2.5 h / 65 °C View Scheme