[CH2:1]([S:7]([NH2:10])(=[O:9])=[O:8])[CH2:2][CH2:3][CH2:4][CH2:5][CH3:6].[OH-].[Na+].[Cl:13][C:14]1[CH:19]=[CH:18][C:17]([N:20]=[C:21]=[O:22])=[CH:16][CH:15]=1.Cl>CC(C)=O>[Cl:13][C:14]1[CH:19]=[CH:18][C:17]([NH:20][C:21]([NH:10][S:7]([CH2:1][CH2:2][CH2:3][CH2:4][CH2:5][CH3:6])(=[O:9])=[O:8])=[O:22])=[CH:16][CH:15]=1The general method of procedure A was followed with hexanesulfonamide (10 g), acetone (200 ml), 1N sodium hydroxide (60 ml), and 4-chlorophenyl isocyanate (8.8 g) in acetone (50 ml). After three hours of stirring, 1N HCl (60 ml) was added followed by removal of acetone and collection of solid from the water. The solid was washed with water and dried at 65° C. under vacuum to provide 16 g of product.
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