Cl[C:2]1[N:7]=[CH:6][CH:5]=[CH:4][N:3]=1.[CH3:8][O:9][C:10]1[CH:17]=[C:16]([O:18][CH3:19])[CH:15]=[CH:14][C:11]=1[CH2:12][NH2:13].C(N(CC)CC)C>C(O)C.O>[CH3:8][O:9][C:10]1[CH:17]=[C:16]([O:18][CH3:19])[CH:15]=[CH:14][C:11]=1[CH2:12][NH:13][C:2]1[N:7]=[CH:6][CH:5]=[CH:4][N:3]=1A mixture of 2-chloropyrimidine (1.37 g, 12 mmol), 2,4-dimethoxybenzylamine (2.61 g, 15.6 mmol) and triethylamine (2.51 mL, 18 mmol) in ethanol (8 mL) was heated in a Biotage Initiator™ microwave at 120° C. for 15 minutes. The reaction mixture was diluted with water and extracted with dichloromethane (×3). The combined organic layers were washed with brine, dried over anhydrous magnesium sulfate, filtered and concentrated in vacuo. The residue was purified by silica gel column chromatography (20-50% ethyl acetate in heptane gradient elution) to afford the title compound as a white solid (2.14 g, 72%).
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