957062-84-9

In a dry reaction flask, a mixture of aniline (3 mmol) and 14% HBr (6 ml) is cooled to 0 °C. A solution of NaNO2 (3 mmol, 1.1 equiv.) in water (2.4 ml) is slowly added to the above reaction mixture, taking care not to raise the temperature above 0 °C duri