Water → HCID 59314163, compound

Participants

Reaction Steps

The mixture of 2-[(1H-indole-4-carbonyl)-amino]-indan-2-carboxylic acid ethyl ester (55) (200 mg, 0.57 mmol) and KOH (600 mg, 10.7 mmol) is dissolved in EtOH (8 mL) and water (1 mL) under a water bath. The water bath is removed when KOH is completely dissolved and the resulting reaction solution is stirred at RT for 8 h. After concentration in vacuo, the residue is dissolved in water (20 mL) and acidified with conc. HCl until no more white precipitate formed. The precipitate is filtered to give a pure product (56) as white solid (162 mg, 89%).

Provenance & Evidence