反应详情

Following the procedure described in Step 1 of Example 1, 2-[(6-bromo-1-methyl-2-naphthyl)oxy]acetonitrile (4.93 g, 17.9 mmol) was coupled to 2-benzofuranboronic acid (3.58 g, 22.1 mmol) using [1,1′-bis(diphenylphosphino)ferrocene]dichloropalladium (II) complex with dichloromethane (1:1) (0.452 g, 0.553 mmol) and potassium carbonate (3.75 g, 27.1 mmol) in dioxane (130 mL) and water (13 mL). Purification by flash chromatography using 3-9% ethyl acetate in hexane as an eluant yielded 2-{[6-(1-benzofuran-2-yl)-1-methyl-2-naphthyl]oxy}acetonitrile a light yellow solid (3.03 g), mp 143-145° C., 1HNMR (300 MHz, DMSO-d6): δ8.45 (s, 1H), 7.95-8.15 (m, 3H), 7.7 (t, 2H, J=7.3 Hz), 7.5-7.6 (m, 2H), 7.2-7.4 (m, 2H), 5.35 (s, 2H), and 2.55 ppm (s, 3H).

1. customPurification by flash chromatography