[Cl:1][C:2]1[CH:3]=[C:4]2[C:8](=[CH:9][N:10]=1)[NH:7][C:6](=[O:11])[CH:5]2[C:12](=[O:18])[C:13]1[S:17][CH:16]=[CH:15][CH:14]=1.[C:19](=[O:25])=[N:20]S(Cl)(=O)=O.C(#N)C.ClS(NC=O)(=O)=O>CS(C)=O>[Cl:1][C:2]1[CH:3]=[C:4]2[C:8](=[CH:9][N:10]=1)[N:7]([C:19]([NH2:20])=[O:25])[C:6](=[O:11])[CH:5]2[C:12](=[O:18])[C:13]1[S:17][CH:16]=[CH:15][CH:14]=1The title compound was prepared from 5-chloro-3-(2-thenoyl)-6-azaoxindole (Example 3C) according to the procedure of Example 2C, using 5-chloro-3-(2-thenoyl)-6-azaoxindole (140 mg, 0.5 mmol), N-chlorosulfonyl isocyanate (65 L, 0.75 mmol), and acetonitrile (5 mL). The crude N-chlorosulfonyl carboxamide was hydrolysed by stirring in DMSO for 2 hours in a flask open to the air. The product was precipitated by addition of water and was collected by filtration. The solid was recrystallized from methanol. Yield: 27 mg (17%).
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