反应详情

温度

0 °C

(5-Amino-3-bromo-pyridin-2-yl)-carbamic acid tert-butyl ester (50 mg, 0.17 mmol), 3-fluoro-benzoyl chloride (28 mg, 0.17 mmol), and N,N-diisopropylethylamine (0.03 mL, 0.19 mmol) were dissolved in CH2Cl2 (2 mL), and stirred or 1 h at 0° C. The reaction solution was diluted with 1 M HCl/CH2Cl2, and filtered through an Extrelut column. The column was washed with CH2Cl2, and the filtrate was concentrated. The crude product was purified via Biotage eluting with a gradient of 20 to 70% EtOAc/hexanes to provide of [3-bromo-5-(3-fluoro-benzoylamino)-pyridin-2-yl]-carbamic acid tert-butyl ester (47 mg, 66% yield) as a solid.

1. filtrationfiltered through an Extrelut column
2. washThe column was washed with CH2Cl2
3. concentrationthe filtrate was concentrated
4. customThe crude product was purified via Biotage
5. washeluting with a gradient of 20 to 70% EtOAc/hexanes