Cl[CH2:2][CH2:3][O:4][C:5](=[O:30])[NH:6][C:7]1[CH:12]=[CH:11][C:10]([C:13]2[N:14]([CH2:28][CH3:29])[C:15]3[C:20]([C:21]=2[C:22]#[N:23])=[CH:19][CH:18]=[C:17]([O:24][CH:25]([CH3:27])[CH3:26])[CH:16]=3)=[CH:9][CH:8]=1.C([O-])([O-])=O.[K+].[K+].O>CN(C=O)C>[CH2:28]([N:14]1[C:15]2[C:20](=[CH:19][CH:18]=[C:17]([O:24][CH:25]([CH3:27])[CH3:26])[CH:16]=2)[C:21]([C:22]#[N:23])=[C:13]1[C:10]1[CH:11]=[CH:12][C:7]([N:6]2[CH2:2][CH2:3][O:4][C:5]2=[O:30])=[CH:8][CH:9]=1)[CH3:29]To a solution of [4-(3-cyano-1-ethyl-6-isopropoxy-1H-indol-2-yl)-phenyl]-carbamic acid 2-chloro-ethyl ester (30 mg, 0.07 mmol) in DMF (1 mL) is added aqueous K2CO3 (10 mg) and then stirred at 50° C. for 18 h. The reaction mixture is poured into cold water and the precipitate collected by filtration and washed with hexane and dried in vacuo to afford the title compound (21 mg, 81%).
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