To a solution of ethyl 2,4-dichloropyrimidine-5-carboxylate (280 mg, 1.27 mmol) and 3-fluoro-4-(1H-imidazol-1-yl)benzenamine (230 mg, 1.30 mmol) in CH3CN (8 mL) at room temperature, DIEA (0.442 mL, 2.54 mmol) was added. The mixture was stirred at room temperature overnight. Water and EtOAc were added. The organic phase was separated, dried over Na2SO4, concentrated in vacuo to give ethyl 2-chloro-4-(3-fluoro-4-(1H-imidazol-1-yl)phenylamino)pyrimidine-5-carboxylate as a solid (383 mg). MS 362.4 and 364.3 (M+H, Cl pattern)
