Rac-{[6-chloro-3-(3-chloro-benzyl)-2-oxo-2,3-dihydro-1h-indol-3-yl]-isopropyl-amino}-acetic acid ethyl ester → HCID 57479232, compound

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rac-{[6-Chloro-3-(3-chloro-benzyl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-isopropyl-amino}-acetic acid ethyl ester (4.5 g, 10.4 mmol) was dissolved in a mixture of MeOH and KOH aqueous solution. This mixed solution was refluxed overnight and then the solution was concentrated. The PH of water layer was adjusted to 5-6 and then the water layer was extracted with dichloromethane. The organic layer was dried, concentrated and purified by chromatography to obtain 3.2 g solid rac-{[6-Chloro-3-(3-chloro-benzyl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-isopropyl-amino}-acetic acid.

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