Triethylamine → 4-[(glycylamino)methyl]-1-[4-(N-phenylcarbamoyl)benzyl]piperidine

Participants

Reaction Steps

An acetonitrile (100 mL) solution of 4-(N-phenylcarbamoyl)benzyl chloride (800 mg, 3.26 mmol) was dropped into a mixture of 4-[[N-(9-fluorenylmethyloxycarbonyl)glycyl]aminomethyl]piperidine (1.27 g, 2.96 mmol) with triethylamine (1.25 mL, 8.88 mmol), KI (50 mg, 0.30 mmol) and acetonitrile (200 mL). The resulting mixture was stirred at room temperature for 19 hours and stirred at 60° C. for another 5 hours. After concentrating, the obtained crude product was purified by column chromatography (SiO2, 5% methanol/dichloromethane-triethylamine/methanol/dichloromethane=2:2:96) to provide 4-[(glycylamino)methyl]-1-[4-(N-phenylcarbamoyl)benzyl]piperidine (340 mg, 30%).

Provenance & Evidence