potassium carbonate in acetone 1 h; Ambient temperature;

1: sodium azide / H2O; acetone / 1 h / Ambient temperature 2: H2, HCl / Pd-C / methanol 3: 57.8 percent / HCl / H2O; ethanol / 1.5h, r.t., 2h, reflux 4: 39 percent / K2CO3 / acetone / 1 h / Ambient temperature View Scheme

1: H2, HCl / Pd-C / methanol 2: 57.8 percent / HCl / H2O; ethanol / 1.5h, r.t., 2h, reflux 3: 39 percent / K2CO3 / acetone / 1 h / Ambient temperature View Scheme

1: 57.8 percent / HCl / H2O; ethanol / 1.5h, r.t., 2h, reflux 2: 39 percent / K2CO3 / acetone / 1 h / Ambient temperature View Scheme