反应详情

Following the procedure described in Step 2 of Example 5 1-benzyl-5-bromo-1H-indole (2.22 g , 7.76 mmol) was coupled to 4-trifluoromethylphenyl boronic acid (1.62 g, 8.54 mmol), using tetrakis(triphenylphosphine)palladium (0.892 g, 0.772 mmol), and potassium carbonate (4.29 g, 31.1 mmol) in water (17 mL), ethanol (4 mL), and toluene (37 mL). Purification by flash chromatography using 0.5-1.0% ethyl acetate in hexane as eluant afforded the title compound as a light yellow solid (0.317 g, 12%). 1HNMR (200 MHz, DMSO-d6): δ 7.7-8.0 (m, 5H), 7.4-7.6 (m, 3H), 7.15-7.4 (m, 5H), 6.6 (d, 1H, J=3.6 Hz), and 5.45 ppm (s, 2H).

1. customPurification by flash chromatography