反应详情

温度

110 °C

A mixture of 6-bromo-5-(2-fluoro-4-nitrophenoxy)-1-(tetrahydro-2H-pyran-2-yl)-1H-indazole (5.0 g, 11.5 mmol), 4-pyridineboronic acid (3.0 g, 24.3 mmol), PdCl2(dppf) (1.8 g, 2.25 mmol) and CsF (5.0 g, 33.0 mmol) in 1,4-dioxane (100 mL) is stirred at 110° C. overnight. Then, aqueous NH4Cl and EtOAc are added. The organic phase is separated, dried over anhydrous MgSO4 and concentrated. The residue is purified by silica gel column chromatography eluting with PE:EtOAc (3:1) to give the desired product (2.8 g, 56% yield). MS (m/z): 435.1 (M+H).

1. customThe organic phase is separated
2. dry with materialdried over anhydrous MgSO4
3. concentrationconcentrated
4. customThe residue is purified by silica gel column chromatography
5. washeluting with PE