Into a dry reaction vessel, methyl 2-[1-(4-aminobenzyl)-2-methyl-1H-indol-3-yl]acetate (260 mg, 0.843 mmol) was added, and dissolved in 10 mL dichloromethane. Triethylamine (0.36 mL, 2.59 mmol) was added, and 2-naphthoyl chloride (195 mg, 1.02 mmol) was added slowly in an ice bath. Upon completion of addition, it was reacted for 1 h in an ice bath, and stirred at room temperature for 3 days. An aqueous solution of sodium bicarbonate was added to quench. It was extracted with dichloromethane, rotate evaporated to dryness, chromatographed on a column to obtain a white solid 150 mg, at a yield of 38.4%.
