反应详情

温度

92.5 °C

To a mixture of 6-chloro-N*4*-(4-chloro-phenyl)-pyrimidine-2,4-diamine (0.5 g, 1.96 mmol), 5-chloro-2-methoxy-phenyl boronic acid (0.73 g, 3.92 mmol), palladium (II) acetate (0.066 g, 0.294 mmol), and triphenylphosphine (0.154 g, 0.588 mmol) was added a solution of sodium carbonate (0.63 g, 5.88 mmol) dissolved in water (6 ml) followed by glyme (20 ml). The reaction mixture was stirred under an argon atmosphere at 90-95° C. for 18 hours. After cooling to room temperature, the mixture was filtered through a pad of celite under suction and concentrated. The residue was purified by flash chromatography on silica gel eluting with ethyl acetate-hexane (1:3) to provide the title compound (0.350 g, 49% yield) as a white powder. 1H NMR (CDCl3) δ 3.86 (s, 3H, CH3), 4.90 (s, 2H, NH2), 6.58 (s, 1H, NH), 6.71 (s, 1H, Ar), 6.91 (d, 1H, J=8.8 Hz, Ar), 7.32-7.41 (m, 5H, Ar), 7.87 (d, 1H, J=2.7 Hz, Ar).

1. temperatureAfter cooling to room temperature
2. filtrationthe mixture was filtered through a pad of celite under suction
3. concentrationconcentrated
4. customThe residue was purified by flash chromatography on silica gel eluting with ethyl acetate-hexane (1:3)