Ethyl 2-[(2-chloro-5-fluoro-4-pyrimidinyl)amino]benzoate (1.0 g, 3.4 mmol), 3-(4-methyl-1-piperazinyl)aniline (0.65 g, 3.4 mmol), ethanol (45 mL) and 6N HCl (1.5 mL, 8.8 mmol) were heated with stirring in a reaction vessel, which was sealed and heated at 95° C. for 24 h. The reaction mixture was cooled to room temperature, poured into water, extracted with ethyl acetate and neutralized to pH 7 by the slow addition of 6N NaOH. The resulting precipitate was collected on a sintered glass funnel and washed with water and ethyl ether to afford the title compound as a tan solid; yield 1.0 g (65%). MS: M(C24H27FN6O2)=450.52 (M+H)+=451.2.
