Hydrochloric Acid → HCID 57476201, compound

Participants

Reaction Conditions

Reaction Steps

A mixture of ethyl 7-[methyl(pyridin-2-ylsulfonyl)amino]-5-[3-(methylsulfonyl)propoxy]-1H-indole-2-carboxylate (2.50 g), 1N aqueous sodium hydroxide solution (10 mL), ethanol (10 mL) and tetrahydrofuran (10 mL) was stirred at 60° C. for 1.5 hr. 1N Hydrochloric acid (10 mL) and water were added to the reaction mixture, and the mixture was extracted with ethyl acetate. The ethyl acetate layer was washed with saturated brine, dried (MgSO4), and concentrated to give the title compound (2.30 g, yield 98%) as colorless crystals. The crystals were recrystallized from acetone-hexane to give colorless prism crystals. melting point 207-208° C.

Provenance & Evidence