Br[C:2]1[CH:3]=[CH:4][C:5]2[N:6]([C:8]([CH:11]=[O:12])=[CH:9][N:10]=2)[CH:7]=1.[CH3:13][O:14][C:15]1[N:20]=[C:19]([O:21][CH3:22])[C:18](B(O)O)=[CH:17][N:16]=1.C([O-])([O-])=O.[Na+].[Na+].CN(C=O)C>C(OCC)(=O)C>[CH3:13][O:14][C:15]1[N:20]=[C:19]([O:21][CH3:22])[C:18]([C:2]2[CH:3]=[CH:4][C:5]3[N:6]([C:8]([CH:11]=[O:12])=[CH:9][N:10]=3)[CH:7]=2)=[CH:17][N:16]=1
6-bromoimidazo[1,2-a]pyridine-3-carbaldehyde (Compound of step 1 of Intermediate 1, 200 mg, 0.89 mmol), 2,4-dimethoxypyrimidin-5-ylboronic acid (212.57 mg, 1.15 mmol), dichlorobis(triphenylphosphine) palladium (II) (20 mg, 10% mmol) and 2M aqueous Na2CO3 (1 mL) were added to DMF (8 mL) and refluxed for 3 hours. The reaction mixture was diluted with ethyl acetate and washed with H2O and brine. The solvent was evaporated to obtain crude product, which was purified by column chromatography (silica gel, 1% methanol in chloroform) to obtain the title compound. Yield: 47.43%; 1H NMR (DMSO-d6; 300 MHz): δ 9.97 (s, 1H), 9.59 (s, 1H), 8.56-8.58 (d, 2H, J=4.5 Hz), 7.88-7.98 (m, 2H), 3.96 (s, 3H), 3.98 (s, 3H); MS: m/z 285.1 (M+1)+
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