反应详情

温度

65 °C

To a solution of 6′-bromo-5″-methyl-3′H-dispiro[cyclobutane-1,2′-indene-1′,2″-imidazol]-4″-amine (Example 54, 0.100 g, 0.31 mmol) in DMF (10 mL) under argon was added 3,3-dimethyl-but-1-yne (0.039 g, 0.47 mmol), tetrakis(triphenylphosphine)palladium(0) (0.036 g, 0.03 mmol) and triethylamine (1.31 mL, 9.43 mmol). The reaction mixture was stirred at r.t. for 5 min before addition of cuprous iodide (8.98 mg, 0.05 mmol). The reaction mixture was stirred overnight at 65° C. and then partitioned between sat aq. NaHCO3 and EtOAc. The organic phase was dried over MgSO4 and concentrated to give a crude product which was purified by preparative chromatography to afford the title compound (0.039 g, 38% yield): 1H NMR (500 MHz, DMSO-d6) δ ppm 1.24 (s, 9 H), 1.47-1.66 (m, 4 H), 1.73-1.84 (m, 1 H), 2.09-2.17 (m, 1 H), 2.18 (s, 3 H), 3.16 (d, 2 H), 6.53 (d, 1 H), 6.60 (s, 2 H), 7.14 (dd, 1 H), 7.24 (d, 1 H); MS (ES+) m/z 320 [M+H]+.

1. custompartitioned
2. dry with materialThe organic phase was dried over MgSO4
3. concentrationconcentrated
4. customto give a crude product which
5. customwas purified by preparative chromatography