Hydrogen chloride (HCl) was added to formamidine acetate (FAAc) and reacted at 0°C (molar ratio HI: FAAc = 1.1:1). The HCl was slowly added to a round-bottom flask containing FAAc, and the mixture was stirred for 2 hours. After the reaction was complete, the reaction solvent was evaporated at 60°C using a rotary evaporator, and the product was recovered. The solid was washed with diethyl ether and recrystallized from ethanol. The resulting white precipitate was dried in a vacuum oven at 65°C for 24 hours. The product was stored in an argon-filled glove box.
Figure: Synthetic Route of Formamidine Hydrochloride
