[CH3:1][O:2][C:3]1[CH:8]=[CH:7][N:6]=[CH:5][C:4]=1[C:9]1[NH:10][C:11]2[C:16]([CH:17]=1)=[CH:15][C:14]([C:18]#[N:19])=[CH:13][CH:12]=2.[H-].[Na+].IC.[C:24]([O-])(O)=O.[Na+]>CN(C=O)C>[CH3:1][O:2][C:3]1[CH:8]=[CH:7][N:6]=[CH:5][C:4]=1[C:9]1[N:10]([CH3:24])[C:11]2[C:16]([CH:17]=1)=[CH:15][C:14]([C:18]#[N:19])=[CH:13][CH:12]=2
To a solution of 2-(4-methoxy-pyridin-3-yl)-1H-indole-5-carbonitrile (Example 90, 178 mg, 0.649 mmol) in DMF (4 mL) is added 60% sodium hydride in mineral oil (78 mg, 1.95 mmol) and the suspension is stirred for 30 min. Iodomethane (138 mg, 0.97 mmol) is then added to the reaction mixture which is stirred at ambient temperature for 1 h. Aqueous NaHCO3 (3 mL) is added to quench the reaction and the mixture is filtered and purified by HPLC using an Xbridge C18 with a gradient of acetonitrile in 0.1% NH4OH to afford 2-(4-methoxy-pyridin-3-yl)-1-methyl-1H-indole-5-carbonitrile as a white solid. 1H NMR (400 MHz, DMSO-d6) δ ppm 3.59 (s, 3H), 3.89 (s, 3H), 6.67 (s, 1H), 7.27 (d, J=5.8 Hz, 1H), 7.54 (dd, J=8.6, 1.5 Hz, 1H), 7.70 (d, J=8.6 Hz, 1H), 8.11 (d, J=1.1 Hz, 1H), 8.42 (s, 1H), 8.60 (d, J=5.8 Hz, 1H). HRMS (ESI) m/z 264.1138 [(M+H) calcd for C16H14N3O: 264.1137].
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