[Cl:1][C:2]1[N:3]=[C:4]2[C:8](=[CH:9][CH:10]=1)[NH:7][C:6](=[O:11])[CH:5]2[C:12](=[O:19])[C:13]1[S:17][CH:16]=[C:15]([Cl:18])[CH:14]=1.[C:20](=[O:26])=[N:21]S(Cl)(=O)=O.C(#N)C.ClS(NC=O)(=O)=O>CS(C)=O.O>[Cl:1][C:2]1[N:3]=[C:4]2[C:8](=[CH:9][CH:10]=1)[N:7]([C:20]([NH2:21])=[O:26])[C:6](=[O:11])[CH:5]2[C:12](=[O:19])[C:13]1[S:17][CH:16]=[C:15]([Cl:18])[CH:14]=1The title compound was prepared from 5-chloro-3-(4-chloro-2-thenoyl)-4-azaoxindole (Example 27) according to the procedure of Example 2C, using 5-chloro-3-(4-chloro-2-thenoyl)-4-azaoxindole (0.75 g, 2.39 mmol), N-chlorosulfonyl isocyanate (0.31 mL, 3.56 mmol), and acetonitrile (12 mL). Hydrolysis of the N-chlorosulfonyl carboxamide was achieved by stirring in DMSO (8 mL) for 4 hours at room temperature in a flask open to the air. The product was obtained by dilution of the mixture with water followed by filtration and recrystallized from acetic acid. Yield: 352 mg (41%).
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