Water → HCID 77502920, compound

Participants

Reaction Conditions

Reaction Steps

A mixture of racemic (2′S,3S,4′R)-4′-[5-bromo-2-(2-ethoxycarbonyl-2-methyl-ethoxy)-phenyl]-6-chloro-2′-(5-chloro-2-methyl phenyl)spiro[3H-indole-3,3′-piperidine]-2,6′(1H)-dione (200 mg, 0.3 mmol), NaOH (40 mg, 1 mmol), H2O (5 mL) and THF (5 mL) was heated at 80° C. for 2 h. Then THF was removed in vacuum. The water solution was acidified by concentrated hydrochloric acid (1.5 mL) to “pH” 2. The white precipitate was collected by filtration to give the title compound as a white solid (Yield: 100 mg).

Provenance & Evidence