Br[C:2]1[N:7]=[CH:6][C:5]([CH:8]=[O:9])=[CH:4][CH:3]=1.[C:10]([C:13]1[CH:14]=[CH:15][C:16]([F:22])=[C:17](B(O)O)[CH:18]=1)(=[O:12])[NH2:11].C([O-])([O-])=O.[Na+].[Na+]>COCCOC.CCO>[F:22][C:16]1[CH:17]=[CH:18][C:13]([C:10]([NH2:11])=[O:12])=[CH:14][C:15]=1[C:2]1[CH:3]=[CH:4][C:5]([CH:8]=[O:9])=[CH:6][N:7]=1To a solution of 6-bromo-3-pyridinecarboxaldehyde (336 mg, 1.80 mmol) in DME (8 mL) and EtOH (4 mL) under argon, was added (5-carbamoyl-2-fluorophenyl)boronic acid (300 mg, 1.64 mmol) followed by palladium tetrakistriphenylphosphine (190 mg, 0.16 mmol) and 2M Na2CO3 (4 mL). The mixture was heated to 80° C. for 16 h and then allowed to cool to rt. The mixture was partitioned between EtOAc (50 mL), THF (50 mL) and Na2CO3 (20 mL). The aqueous was extracted with EtOAc (50 mL) and the combined organics washed with brine (30 mL) and dried (MgSO4). The solvent was removed in vacuo and the residue purified by column chromatography (0.4% NH3: 4% MeOH: DCM) to give the title compound: RT=2.50 min; m/z (ES+)=245.0 [M+H]+.
Loading…
