Hydrochloric Acid → HCID 57868186, compound

Participants

Reaction Steps

This [2,5-dichloro-4-[(1H-indol-3-ylcarbonyl)amino]phenyl]acetic acid ethyl ester (5.7 g, 14.57 mmol) was added to THF (50 mL) and ethanol (30 mL), and a 0.25N-aqueous solution of sodium hydroxide (120 mL) was added thereto. The mixture was stirred for 15 hours at room temperature, and then for one hour at 60° C. The reaction mixture was left to cool naturally to room temperature, and then 1N—HCl (32 mL) was added thereto while stirring the reaction mixture under ice cooling. Precipitated crystals were collected by filtration under reduced pressure, washed with water, and then dried, to obtain the title compound (4.25 g, 80%) as a solid.

Provenance & Evidence