4-(Boc-amino)pyridine is a protected derivative of the amino acid Pyridine, a heterocyclic compound that is commonly found in biological specimens (such as human red blood cells), and is used as a starting reagent and intermediate in the chemical and pharmaceutical industries.
At room temperature, 4-aminopyridine (600 mg, 6.36 mmol), 4-dimethylaminopyridine (DMAP, 600 μg, 5.00 μmol), di-tert-butyl dicarbonate (Boc2O, 1.57 mL, 7.00 mmol) and triethylamine (Et3N, 1 mL, 7.63 mmol) were suspended in anhydrous tetrahydrofuran (THF, 3 mL) in anhydrous tetrahydrofuran (THF, 3 mL) and the reaction was stirred under argon protection for 20 min. After completion of the reaction, the reaction mixture was diluted with dichloromethane (CH2Cl2, 5 mL) and washed with 0.1 N hydrochloric acid (5 mL). The organic layers were combined, dried with anhydrous magnesium sulfate (MgSO4), filtered and concentrated by rotary evaporation. Finally, the target product 4-(tert-butoxycarbonylamino)pyridine (S1w, 1.30 g, yield >99%) was purified as a white solid by column chromatography (eluent ratio 30:1 dichloromethane/methanol).
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