The general procedure for the synthesis of 3-iodobenzylamine hydrochloride from the compound (CAS: 200706-60-1) was as follows: 2.0 g (5.6 mmol) of compound (A) and 20 mL of anhydrous ethanol were added to the reaction flask. After heating the mixture to 60°C, an ethanolic solution of hydrazine hydrate (prepared by dissolving 0.42 g, 8.4 mmol of hydrazine hydrate in 3 mL of anhydrous ethanol) was added dropwise under continuous stirring. The reaction was kept heated and stirred for 20 min and a yellow precipitate was observed to be formed. Stirring was stopped and the reaction mixture was kept in a 70°C water bath for 2.5 hours. It was then cooled to room temperature, at which time a large amount of yellow precipitate precipitated. 4 mL of 1 mol/L hydrochloric acid solution was added to the reaction flask to acidify the reaction mixture and stirring was continued for 30 minutes. After completion of the reaction, a filtration operation was carried out, the filtrate was washed with a small amount of water and the filtrates were combined. The combined filtrates were evaporated to dryness under reduced pressure and finally dried under vacuum to give 0.539 g of yellow solid (B) in 35.9% yield.
