[Br:1][C:2]1[CH:3]=[CH:4][C:5]2=[C:6]([CH:19]=1)[NH:7][C:8](=[O:18])[CH2:9][N:10]=[C:11]2[C:12]1[CH:17]=[CH:16][CH:15]=[CH:14][CH:13]=1.[H-].[Na+].[CH3:22]I>CN(C=O)C>[Br:1][C:2]1[CH:3]=[CH:4][C:5]2=[C:6]([CH:19]=1)[N:7]([CH3:22])[C:8](=[O:18])[CH2:9][N:10]=[C:11]2[C:12]1[CH:17]=[CH:16][CH:15]=[CH:14][CH:13]=1Title compound 354 (3.1 g, 11.8 mmol), sodium hydride (565 mg, 14.14 mmol) and methyliodide (0.88 mL, 14.14 mmol) were stirred together in DMF (60 mL) at room temperature for 6 hours. DMF was removed and the residue was partitioned in EtOAc and water. The organic layer was dried, filtered and evaporated. The crude product was purified by flash chromatography (3:1 to 1:2 hexane:ethyl acetate) to afford title compound 357 (2.3 g, 60%) as a white solid.
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