反应详情

A solution of 3-(aminomethyl)-1-boc-piperidine (409 mg, 1.91 mmol) in acetonitrile (2.5 mL) was added dropwise to a solution of 2-bromo-4-chloro-5-nitropyridine (431 mg, 1.82 mmol) and triethylamine (0.28 mL, 2.0 mmol) in acetonitrile (10 mL). The solution was stirred for 1 hr 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 3-((2-bromo-5-nitropyridin-4-ylamino)methyl)piperidine-1-carboxylate as a yellow-brown solid (718 mg, 95%) 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