sodium azide in dimethyl sulfoxide T=80°C; 3 h;

1: triethylamine / diethyl ether / 1 h / 0 - 20 °C / Inert atmosphere 2: sodium azide / dimethyl sulfoxide / 3 h / 80 °C View Scheme

sodium azide

1: 4-nitro-aniline With sulfuric acid; sodium nitrite in water; acetic acid T=0°C; 0.0833333 h; 2: N,N-bis(2-azidoethyl)aniline in water; acetic acid; N,N-dimethyl-formamide T=0°C; 12 h; Further stages.;