反应详情

A solution of N-(2-bromo-6-fluoropyridin-3-yl)-2,2,2-trifluoro-acetamide (9.16 g, 31.9 mmol), allyl bromide (6.18 g, 47.9 mmol) and sodium carbonate (8.82 g, 63.8 mmol) in CH3CN (80 mL) is stirred at 80° C. for 2 h. The reaction mixture is concentrated in vacuo and the residue is purified by silica gel chromatography eluting with 0-60% DCM in heptane to afford N-allyl-N-(2-bromo-6-fluoro-pyridin-3-yl)-2,2,2-trifluoro-acetamide (9.05 g) as an oil. 1H NMR (300 MHz, CDCl3) δ 3.68 (q, H), 5.01 (q, H), 5.17 (d, H), 5.29 (d, H), 6.85(m, H), 7.00 (dd, H), 7.64(t, H).

1. concentrationThe reaction mixture is concentrated in vacuo
2. customthe residue is purified by silica gel chromatography
3. washeluting with 0-60% DCM in heptane