A mixture of trifluoromethanesulfonic acid 4-[2-methyl-4-(2,4,6-trimethylphenylamino)-pyrimidine-5-sulfonyl]-phenyl ester (95 mg, 0.18 mmol), prepared by the method described in Example 22, 5-tributylstannanyl-pyrimidine (75 mg, 0.20 mmol), LiCl (23 mg, 0.55 mmol) and DMF (4 mL) was deoxygenated with N2 for 10 min, and then Pd(PPh3)2Cl2 (13 mg, 0.018 mmol) and PPh3 (10 mg, 0.036 mmol) were added. The mixture was heated at 150° C. under N2 for 2 h and then cooled to room temperature. Saturated aqueous KF was added, and the mixture was extracted three times with CH2Cl2. The combined organic layers were washed with brine, dried over Na2SO4, filtered and concentrated in vacuo. The residue was purified by chromatography on silica gel (50:50 hexanes/EtOAc) to provide the target compound (66 mg, 80%) as a white solid: mp 210–212° C.; 1H NMR (300 MHz, CDCl3) δ 9.29 (s, 1H), 8.96 (s, 1H), 8.80 (s, 1H), 8.30 (br s, 1H), 8.13 (d, J=8.5 Hz, 2H), 7.76 (d, J=8.5 Hz, 2H), 6.93 (s, 2H), 2.41 (s, 3H), 2.31 (s, 3H), 2.03 (s, 6H); APCI MS m/z 446 [(M+H)+, calcd for C24H24N5O2S, 446.2].
