To a mixture of 6-chloro-N4-(4-{[2-(trifluoromethyl)pyridin-4-yl]oxy}phenyl)pyrimidine-2,4-diamine (1.0 g, 2.6 mmol; available by condensation of 2-amino-4,6-dichloropyrimidine and {4-[(2-trifluromethylpyridin-4-yl)oxy]phenyl}amine, described in WO 2003/099771, which is hereby incorporated by reference) and 1,3-dimethylphenylboronic acid (786 mg, 5.2 mmol) in DMF (13 m]L) was added aqueous Na2CO3 (2 M, 3.9 mL) and tetrakis(triphenylphosphin)palladium (0) (303 mg, 0.26 mmol). The resulting mixture was degassed for 10 min before it was placed in a microwave reactor (Emrys optimizer by Personal Chemistry) at 150° C. for 20 min. The resulting mixture was cooled to rt before it was filtered and insoluble material was rinsed with DMF. The filtrate was concentrated under vacuo and dissolved in EtOAc. The resulting mixture was washed with water and the organic layer was dried over Na2SO4. Removal of the solvent under vacuo gave the crude material, which was purified with 40 M biotage eluting with Hex/EtOAc (1/1) to provide the title compound as an off-white solid (657 mg, 56%): 1H NMR (DMSO-d6): δ 9.27 (s, 1H), 8.59 (d, 1H), 7.86-7.90 (m, 2H), 7.35 (d, 1H), 7.04-7.17 (m, 6H), 6.35 (s, 2H), 5.86 (s, 1H), 2.10 (s, 6H) ppm; MS ES 452 (M+H)+, RT=2.76 min.
