hydrogenchloride; sodium nitrite in water T=0°C; Diazotization;

1.1: EtONa / ethanol / 0.5 h 1.2: 78 percent / EtONO / 1 h / 0 °C 2.1: 48 percent / Al/Hg / ethanol / 4 h / 0 - 25 °C 3.1: 74 percent / 1N HCl; NaNO2 / H2O / 0 °C View Scheme

1: 48 percent / Al/Hg / ethanol / 4 h / 0 - 25 °C 2: 74 percent / 1N HCl; NaNO2 / H2O / 0 °C View Scheme

in ethanol T=47.85°C; Ring cleavage; Equilibrium constantActivation energy; Further Variations:Temperatures;