反应详情

The 4-[(phenylmethyl)oxy]-1H-indazole (D1) (500 mg, 2.23 mmol), the [3-methyl-4-(methyloxy)phenyl]boronic acid (740 mg, 4.46 mmol), copper (II) acetate (608 mg, 3.345 mmol), pyridine (0.36 mL, 4.46 mmol) and powdered molecular sieves (400 mg) in DCM (75 mL) were stirred at room temperature in the presence of air. After 41 hours the mixture was filtered through a pad of celite and washed with water. The aqueous was re-extracted with DCM and the combined organics were washed with brine and dried over MgSO4. The crude (1.17 g) was purified by flash chromatography (Biotage SP4) with a gradient of EtOAc 0 to 30% in hexane to afford 562 mg of title compound (D34) containing an impurity.

1. filtrationAfter 41 hours the mixture was filtered through a pad of celite
2. washwashed with water
3. extractionThe aqueous was re-extracted with DCM
4. washthe combined organics were washed with brine
5. dry with materialdried over MgSO4
6. customThe crude (1.17 g) was purified by flash chromatography (Biotage SP4) with a gradient of EtOAc 0 to 30% in hexane