water T=25°C; ΔH=4858 cal/mol, ΔG=-1475 cal/mol, ΔS=25.42 eu; Thermodynamic data;

toluene-4-sulfonic acid Title compound not separated from byproducts;

toluene-4-sulfonic acid Heating;

hydrogen azide; toluene-4-sulfonic acid in dichloromethane 6.5 h; Ambient temperature; Title compound not separated from byproducts;

1: 4.5 g / p-toluenesulfonic acid / Heating 2: 76 percent / potassium t-butoxide / pentane / 1.) 0 deg C, 30 min., 2.) 2 h, room temp. 3: MeLi / diethyl ether / 1.) 0 deg C, 0.5 h, 2.) 2 h, room temp. 4: methanol; CCl4 View Scheme