Water → 2-(1H-Indol-5-yl)-N-methylethane-1-sulfonamide

Participants

Reaction Conditions

Reaction Steps

N-[2-ethynyl-4-(2-methylsulfamoyl-ethyl)-phenyl]-acetamide (100 g) was dissolved in N-methylpyrrolidone (900 ml) at 25° C. Potassium tert-butoxide (60 g) was added and the reaction mass was heated to 80-85° C. for 120-150 minutes. The reaction mass was cooled gradually to 25° C., water (3000 ml) was added and stirred for 30 minutes. The solution was extracted with ethyl acetate (2000 ml). The organic layer was dried over sodium sulfate and distilled under vacuum to obtain a residue. The residue was treated with heptane (300 ml) to obtain a solid which was filtered, washed with heptane and dried at 50-55° C. under vacuum to obtain the title compound. (Yield: 84 g, HPLC Purity: 98%)

Provenance & Evidence