Dimethylamine → 3(S)-[(3-chloro-4-fluorophenyl)-(3-dimethylamino propyl)amino]pyrrolidine-1-carboxylic acid tert-butyl ester

Participants

Reaction Conditions

Reaction Steps

3(S)-[(3-chloro-4-fluorophenyl)-(3-chloropropyl)amino]pyrrolidine-1-carboxylic acid tert-butyl ester (0.5 g, 1.24 mmol), 50% dimethylamine solution (1 ml) and sodium iodide (0.37 g, 2.5 mmol) were suspended in DMF (3 ml), followed by stirring at 60° C. for 4 hours. After cooling to room temperature, water was added to the reaction solution, and extraction with ethyl acetate was conducted. The organic layer was dried over sodium sulfate, and the solvent was then distilled off under reduced pressure. The residue was purified with basic silica gel column chromatography (ethyl acetate), and the purified product was then concentrated under reduced pressure to thereby obtain 0.36 g of oily colorless 3(S)-[(3-chloro-4-fluorophenyl)-(3-dimethylamino propyl)amino]pyrrolidine-1-carboxylic acid tert-butyl ester.

Provenance & Evidence