反应详情

A solution of 4-(aminomethyl)-1-boc-piperidine (370 mg, 1.73 mmol) in acetonitrile (1 mL) was added over 1 minute to a solution of 2-bromo-4-chloro-5-nitropyridine (373 mg, 1.57 mmol) and triethylamine (0.24 mL, 1.73 mmol) in acetonitrile (5 mL). The solution was stirred for 30 minutes then partitioned between dichloromethane and water. The aqueous phase was extracted with dichloromethane (×3) and the combined organic phases were dried (Na2SO4) and concentrated to give tert-butyl 4-((2-bromo-5-nitropyridin-4-ylamino)methyl)piperidine-1-carboxylate as a light brown foam (640 mg, 98%) which was used without further purification.

1. customthen partitioned between dichloromethane and water
2. extractionThe aqueous phase was extracted with dichloromethane (×3)
3. dry with materialthe combined organic phases were dried (Na2SO4)
4. concentrationconcentrated