Sodium Bicarbonate → N-[3-(1H-indol-2-yl)-1H-indazol-5-yl]-2-methylsulfonylbenzenesulfonamide

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Reaction Steps

N-[3-(1H-Indol-2-yl)-1H-indazol-5-yl]-2-methylsulfonylbenzenesulfonamide can be obtained as described in Example 59 from 1 g of tert-butyl 3-iodo-5-(2-methylsulfonylbenzenesulfonylamino)indazole-1-carboxylate, 900 mg 1-(tert-butyloxycarbonyl)indole-2-boronic acid, 40 ml of dimethylformamide, 3.2 ml of saturated aqueous sodium hydrogencarbonate solution and 50 mg of tetrakis(triphenylphosphine)palladium[0]. 330 mg of N-[3-(1H-indol-2-yl)-1H-indazol-5-yl]-2-methylsulfonylbenzenesulfonamide are thus obtained in the form of a white solid melting above 260° C. (analysis C22H18N4O4S2 % calculated C, 56.63; H, 3.89; N, 12.01; O, 13.72; S, 13.75. % found C, 56.87; H, 4.10; N, 13.81; S, 12.65).

Provenance & Evidence