Citric Acid → HCID 67486861, compound

Participants

Reaction Steps

A mixture of N-[2-(benzylthio)-3-oxopropyl]-7-[methyl(pyridin-2-ylsulfonyl)amino]-5-[3-(methylsulfonyl)propoxy]-1H-indole-2-carboxamide (0.35 g), N-acetylpiperazine (0.14 g) and 1,2-dichloroethane (8 mL) was stirred at room temperature for 10 min. Sodium triacetoxyborohydride (345 mg) was added to the reaction solution, and the mixture was stirred at room temperature for 16 hr. The reaction solution was acidified with aqueous citric acid solution, basified with aqueous sodium hydrogencarbonate solution, and extracted with ethyl acetate. The organic layer was washed with saturated brine, dried over anhydrous magnesium sulfate, and concentrated under reduced pressure. The obtained residue was subjected to silica gel column chromatography (ethyl acetate:methanol=10:0-9:1) to give the title compound (0.35 g, yield: 85%) as a colorless amorphous solid. MS: 756 (MH+).

Provenance & Evidence