反应详情

温度

120 °C

4-(3-Dimethylamino-acryloyl)-3,5-dimethyl-1H-pyrrole-2-carboxylic acid amide (100 mg, 0.43 mmol), 4-fluorophenylguanidine nitrate (139 mg, 0.65 mmol) and K2CO3 (94 mg, 0.68 mmol) were partially dissolved in 2-methoxyethanol (5 mL) and heated at 120° C. for 18 h. The mixture was concentrated in vacuo and purified by SiO2 chromatography (EtOAc/MeOH gradient elution). The crude product was triturated in iPr2O to afford the title compound (31 mg) as a buff solid. M.p. 93.5–96.8° C. MS: [M+H+]=326.9 (C17H16FN5O requires 325.3). 1H-NMR (DMSO-d6) δ: 2.36 (s, 3H, CH3), 2.39 (s, 3H, CH3), 6.79 (d, 1H, J=5.4 Hz, pyrimidinyl-H), 6.92 (br. s, 2H, NH), 7.07 (t, 2H, J=8.5 Hz, Ph-H), 7.76–7.78 (m, 2H, Ph-H), 8.36 (d, 1H, J=5.4 Hz, pyrimidinyl-H), 9.41 (s, 1H, NH), 11.24 (br. s, 1H, NH).

1. concentrationThe mixture was concentrated in vacuo
2. custompurified by SiO2 chromatography (EtOAc/MeOH gradient elution)
3. customThe crude product was triturated in iPr2O