Cl[C:2]1[C:7]([C:8]2[CH:13]=[CH:12][CH:11]=[CH:10][CH:9]=2)=[CH:6][N:5]=[C:4]([C:14]2[CH:19]=[CH:18][CH:17]=[CH:16][N:15]=2)[N:3]=1.[F-].[K+].[O:22]1[CH2:27][CH2:26]OCC1>O.CC(C)([P](C(C)(C)C)([Pd][P](C(C)(C)C)(C(C)(C)C)C(C)(C)C)C(C)(C)C)C>[C:8]1([C:7]2[C:2]([C:8]3[CH:9]=[CH:10][C:26]([CH:27]=[O:22])=[CH:6][CH:7]=3)=[N:3][C:4]([C:14]3[CH:19]=[CH:18][CH:17]=[CH:16][N:15]=3)=[N:5][CH:6]=2)[CH:13]=[CH:12][CH:11]=[CH:10][CH:9]=14-Chloro-5-phenyl-2-pyridin-2-ylpyrimidine (4-2; 0.15 g, 0.56 mmol), (4-formylphenyl)boronic (0.126 g, 0.840 mmol), bis(tri-t-butylphosphine)palladium(0) (0.014 g, 0.028 mmol) and anhydrous KF (0.107 g, 1.85 mmol) were stirred in 2 μl anhydrous dioxane under N2. The reaction was heated to reflux. After 15 min an additional sample of bis(tri-t-butylphosphine)palladium(0) (0.014 g, 0.028 mmol) was added and the reaction was heated at reflux overnight. The reaction was cooled and diluted with water. The mixture was extracted 3× with DCM. The combined organic phases was dried over Na2SO4, filtered and concentrated. The residue was purified by flash column chromatography (dissolved sample in DCM, eluted with 98:2 DCM/EA) and provided an impure sample of 4-(5-phenyl-2-pyridin-2-ylpyrimidin-4-yl)benzaldehyde (4-3) that was used directly in the next transformation.
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