Tetrahydrofuran → HCID 57901642, compound

Participants

Reaction Steps

To a mixture of N-(1-oxo-2,3,4,9-tetrahydro-1H-carbazol-8-yl)thiophene-2-sulfonamide (0.50 g), tetrahydrofuran (20 mL) and methanol (2 mL) was added sodium borohydride (0.11 g) at 0° C., and the mixture was stirred at room temperature for 3 hr. The reaction mixture was concentrated, 10% aqueous citric acid solution was added, and the resulting crystals were filtrated, washed with water, and dried to give the title compound (0.43 g, yield 86%) as colorless crystals. The crystals were recrystallized from ethyl acetate-hexane. melting point>175° C. (decomposition).

Provenance & Evidence