反应详情

N-[3-(3-Aminophenyl)-1H-indazol-5-yl]-2-methylsulfonylbenzenesulfonamide can be obtained as described in Example 49 from 200 mg of N-[3-(3-nitrophenyl)-1H-indazol-5-yl]-2-methylsulfonylbenzenesulfonamide, 6 ml of ethanol, 73 mg of powdered iron, 100 ml of distilled water and 40 μl of 12 N hydrochloric acid. 70 mg of N-[3-(3-aminophenyl)-1H-indazol-5-yl]-2-methylsulfonylbenzenesulfonamide are thus obtained in the form of light yellow crystals melting at 154° C. (analysis C20H18N4O4S2 % calculated C, 54.29; H, 4.10; N, 12.66; O, 14.46; S, 14.49. % found C, 53.03; H, 4.26; N, 11.63; S, 13.22).