In a sealed tube a solution of 5-bromo-N4-(trans-4-methoxycyclohexyl)-6-methylpyrimidine-2,4-diamine (811 mg, 2.57 mmol) and ethyl acrylate (559 uL, 5.15 mmol) in triethylamine (25 mL) was bubbled with argon for ˜10 minutes. Tetrakis(triphenylphosphin)-palladium (0) (297 mg, 0.257 mmol) was added, the vial was sealed, and the reaction was heated to 130° C. overnight. The reaction mixture was cooled to room temperature, diluted with ethyl acetate (450 mL), washed with water, 0.1 N hydrochloric acid, brine, dried (MgSO4), filtered and concentrated. The crude product was purified by flash chromatography eluting with chloroform/methanol (0-10%) to afford (E)-ethyl 3-(2-amino-4-(trans-4-methoxycyclohexylamino)-6-methylpyrimidin-5-yl)acrylate (674 mg, 78%).
