反应详情

温度

80 °C

According to Scheme 3 Method A: To a mixture of 1-(4-chloro-2-fluorobenzyl)-5-bromopyridin-2(1H)-one (1 eq, 1.00 mmol, 0.40 g) in dioxane/K3PO4 (2M, 10 mL), were added Pd(PPh3)4 (0.3 eq, 0.4 mmol, 0.4 g) and 6-methoxypyridin-3-ylboronic acid (1.5 eq, 2.00 mmol, 0.30 g) then the reaction mixture was heated at 80° C. for 17 hours. The mixture was diluted with AcOEt. The organic fraction washed with brine, dried over Na2SO4, filtered and concentrated under reduced pressure. The crude product was purified by silica gel chromatography (AIT Flashsmart prepacked column 25 g SiO2, CH2Cl2/AcOEt 70/30) and by crystallization in pentane/Et2O to afford 1-(4-chloro-2-fluorobenzyl)-5-(6-methoxypyridin-3-yl)pyridin-2(1H)-one (0.91 mmol, 0.40 g, 91%) as a white solid.

1. washThe organic fraction washed with brine
2. dry with materialdried over Na2SO4
3. filtrationfiltered
4. concentrationconcentrated under reduced pressure
5. customThe crude product was purified by silica gel chromatography (AIT Flashsmart prepacked column 25 g SiO2, CH2Cl2/AcOEt 70/30) and by crystallization in pentane/Et2O