To a mixture of (S)-tert-butyl 2-chloro-4-(3-methylmorpholino)-5,6-dihydropyrido[3,4-d]pyrimidine-7(8H)-carboxylate (by) (54 mg, 0.15 mmol), 6-(benzyloxy)-N-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)pyridin-2-amine (ow) (prepared in Example 289, 61 mg, 0.15 mmol), Tetrakis(triphenylphosphine)palladium(0) (11.7 mg, 0.0101 mmol), Potassium carbonate (26.8 mg, 0.194 mmol) and Potassium acetate (19.9 mg, 0.203 mmol) was added Acetonitrile (0.56 mL) and Water (0.23 mL) under N2. The reaction was microwaved at 120° C. for 20 minutes. After evaporation of solvents, the residue was purified on a silica gel column to give the desired product (80 mg, 90% yield) as slightly brown powder. The 1H-NMR, TLC and LC-MS were identical to the one in Example 299.
