Acetamidine monohydrochloride → HCID 13225498, compound

Participants

Reaction Steps

A suspension of 1.6 g (0.005 mol) of 8-chloro-3,4-dihydro-4-(dimethylaminomethylene)-1-phenyl-5H-2-benzazepin-5-one and 0.7 g (0.0075 mol) of acetamidine hydrochloride in 50 ml of methanol was stirred at room temperature, under argon, and treated with 0.8 g (0.015 mol) of sodium methylate in one portion. After stirring for 10 min, 30 ml of methylene chloride was added and stirring was continued. Another 0.8 g (0.015 mol) of sodium methylate and 0.7 g (0.0075 mol) of acetamidine hydrochloride were added after 2 hrs. The addition of 0.015 mol of sodium methylate and 0.0075 mol of acetamidine hydrochloride was repeated after another 2 hr and stirring at room temperature was continued overnight. After diluting with 50 ml of methylene chloride, the mixture was washed with water, dried over sodium sulfate and evaporated at reduced pressure. Crystallization occurred when the residue was dissolved in 20 ml of warm hexane and cooled. Evaporation of the solvent gave a second crop of product. Recrystallization from hexane (charcoal) gave off-white crystals: mp 120°-122° C.

Provenance & Evidence