Synthesis of chloroformamidine hydrochloride: cyanamide (50.0 g, 1.19 mol, 1 eq.) was dissolved in diethyl ether (900 ml) and the solution was cooled to 0°C. An ether solution of hydrogen chloride (450 g, 29%) was slowly added while the temperature was kept below +5 °C. After addition, the reaction mixture was continued to be stirred at room temperature for some time. Subsequently, the white precipitate was collected by filtration and dried under vacuum at 30 °C to afford a white solid product, chloroformamidine hydrochloride (132.66 g, 1.15 mol, 96.64% yield).
