[NH2:1][C:2]1[CH:7]=[C:6]([OH:8])[CH:5]=[CH:4][C:3]=1[S:9][C:10]1[CH:15]=[CH:14][C:13]([NH:16][C:17](=[O:19])[CH3:18])=[CH:12][CH:11]=1.Br[CH2:21][C:22]#[N:23].C(=O)([O-])[O-].[K+].[K+]>CN(C=O)C>[NH2:1][C:2]1[CH:7]=[C:6]([O:8][CH2:21][C:22]#[N:23])[CH:5]=[CH:4][C:3]=1[S:9][C:10]1[CH:15]=[CH:14][C:13]([NH:16][C:17](=[O:19])[CH3:18])=[CH:12][CH:11]=1A mixture of the product from Example 232b (56 mg, 0.17 mmol), 2-Bromoacetonitrile (20 mg, 0.17 mmol) and potassium carbonate (26 mg, 0.19 mmol) in DMF (1 mL) was stirred at room temperature 15 hr. The next day, the reaction mixture was poured onto ice and the solid collected by filtration providing the title compound (53 mg, 100%).
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