反应详情

To a stirring solution of 1-(4-bromopyridin-2-yl)ethyl methanesulfonate (4.68 g, 16.71 mmol) in anhydrous DMF (45 mL) DMF was added sodium azide (2.17 g, 33.41 mmol) and stirred at room temperature for 2 hours. The reaction was then diluted with 80 mL of water, then extracted with EtOAc (2×75 mL). The organic extracts were combined, washed with water (50 mL) and brine (50 mL), dried over Na2SO4, and concentrated to give the crude product which was used directly without further purification. 1H NMR (400 MHz, CDCl3) δ 8.40 (d, J=5.2 Hz, 1H), 7.55 (s, 1H), 7.41 (d, J=5.2 Hz, 1H), 4.65 (q, J=6.8 Hz, 1H), 1.60 (dd, J=6.8, 0.8 Hz, 3H).

1. extractionextracted with EtOAc (2×75 mL)
2. washwashed with water (50 mL) and brine (50 mL)
3. dry with materialdried over Na2SO4
4. concentrationconcentrated