Hydrochloric Acid → HCID 67693453, compound

Participants

Reaction Steps

Ethyl 5-[(3-(piperadin-1-yl)propyl)sulfonamido]indole-2-carboxylate (PREPARATION 83, 1.63 g) is dissolved in 10 ml of dioxane and 5 ml of water. Then 0.59 g of solid potassium hydroxide pellets are added and the reaction is stirred at 20°-25° for 24 hr. Then 8.91 ml of 1N hydrochloric acid is added after diluting the reaction with 100 ml of water. The mixture is extracted with n-butanol (3×50 ml) and the organic layer is separated and evaporated under reduced pressure to provide the title compound, NMR (300 MHz, d6-DMSO) 7.37, 7.27, 7.00, 6.90, 2.91, 2.25, 1.75, 1.31, (peak at 4.3 ppm obscured by DMSO).

Provenance & Evidence