反应详情

温度

110 °C

A 20-mL vial was charged with 4-chloro-2-(3-chlorophenyl)-6-cyclopropylpyrimidine (0.380 g, 1.43 mmol), ethyl 2-(6-aminopyridin-3-yl)acetate (0.410 g, 2.27 mmol), palladium acetate (0.016 g, 0.071 mmol), rac-BINAP (0.069 g, 0.11 mmol) and cesium carbonate (1.17 g, 3.58 mmol) in dioxane (10 mL) under argon. The reaction mixture was heated to 110° C. under microwave irradiation for 1.25 h. The reaction mixture was cooled, and diluted with ethyl acetate and filtered through celite. The filtrate was washed with saturated sodium chloride (2×10 mL), dried over sodium sulfate, filtered, and the filtrate concentrated under reduced pressure. The residue was purified by chromatography on silica using hexanes/ethyl acetate (10:0 to 0:10) as eluent to afford the title compound (0.504 g, 86%) as an off-white solid. MW=408.88. M.p. 133-135° C. 1H NMR (DMSO-d6, 500 MHz) δ 10.13 (s, 1H), 8.31-8.29 (m, 1H), 8.27 (dt, J=7.0, 1.5 Hz, 1H), 8.22 (d, J=2.0 Hz, 1H), 7.75-7.68 (m, 2H), 7.62 (br s, 1H), 7.59-7.52 (m, 2H), 4.10 (q, J=7.5 Hz, 2H), 3.68 (s, 2H), 2.07 (septet, J=4.5 Hz, 1H), 1.21 (t, J=7.0 Hz, 3H), 1.14-1.10 (m, 2H), 1.06-1.00 (m, 2H); APCI MS m/z 409 [M+H]+.

1. temperatureThe reaction mixture was cooled
2. filtrationfiltered through celite
3. washThe filtrate was washed with saturated sodium chloride (2×10 mL)
4. dry with materialdried over sodium sulfate
5. filtrationfiltered
6. concentrationthe filtrate concentrated under reduced pressure
7. customThe residue was purified by chromatography on silica