sodium hydroxide; sodium hypobromide in ethanol 15 h; Ambient temperature;

1: 97 percent / NaHCO3, m-ClC6H4CO3H / CH2Cl2 / 14 h / 0 °C 2: 77 percent / sodium hypobromit, 1N NaOH / ethanol / 15 h / Ambient temperature View Scheme

sodium in ethanol 0.75 h; Heating;