Water → HCID 66616121, compound

Participants

Reaction Steps

To a solution of (S)-1-(1-(2-amino-4-phenylbutanoyl)piperidin-4-yl)-3,3-dimethylindolin-2-one hydrochloride (1.00 g, 2.26 mmol, EXAMPLE 1, Step 4) in dichloromethane (10 mL) was added triethylamine (954 microL, 6.79 mmol) and 2-nitrobenzenesulfonyl chloride (501 mg, 2.26 mmol) at 0° C. After stirring for 20 min at room temperature, water and ethyl acetate were added to the mixture. The organic layer was washed with sodium hydrogen carbonate aqueous solution, 1 mol/L hydrochloric acid and brine, dried over sodium sulfate and concentrated. The crude product was purified by silica gel column chromatography (hexane/ethyl acetate, gradient) to give the title compound (1.26 g, 94%) as an amorphous solid.

Provenance & Evidence