反应详情

Following the procedure described in Step 2 of Example 5, 6-bromo-1-[4-(tert-butyl)benzyl]-1H-indole (0.490 g, 1.43 mmol) was coupled to 4-trifluoromethylbenzeneboronic acid (0.300 g, 1.58 mmol), using tetrakis(triphenylphosphine)palladium (0.0560 g, 0.0484 mmol) and sodium carbonate (0.615 g, 5.80 mmol) in water (2.8 mL), ethanol (1.4 mL) and toluene (10 mL). Purification by flash chromatography using hexane as an eluant afforded 1-[4-(tert-butyl)benzyl]-6-[4-(trifluoromethyl)phenyl]-1-H-indole as a white solid (0.392 g, 67%), mp 134-135° C. 1HNMR (200 MHz, DMSO-d6): δ 7.85 (d, 3H, J=7.7 Hz), 7.75 (d, 2H, J=7.7 Hz), 7.65 (d, 1H, J=7.7 Hz), 7.55 (d, 1H, J=4.1 Hz), 7.25-7.4 (m, 3H), 7.15 (d, 2H, J=7.7 Hz), 6.5 (d, 1H, J=2.6 Hz), 5.45 (s, 2H), and 1.2 ppm (s, 9H).

1. customPurification by flash chromatography