Triethylamine → ethyl 2-[3-[4-(3,4-dichlorobenzamido)benzyl]-2-methyl-1H-indol-1-yl]acetate

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Reaction Steps

In a dry reaction vessel, ethyl 2-[3-(4-aminobenzyl)-2-methyl-1H-indol-1-yl]acetate (1.0 g, 3.11 mmol) was added, and dissolved in 15 mL dichloromethane. Triethylamine (1.3 mL, 9.3 mmol) was added, and in an ice bath a dichloromethane solution dissolving 3,4-dichlorobenzoyl chloride (0.652 g, 3.11 mmol) was added slowly. After completion of dropwise addition, it was reacted in an ice bath for 4 h, and filtered. An aqueous solution of sodium bicarbonate was added, extracted with dichloromethane, rotate evaporated to dryness, chromatographed on a column to obtain a white solid 1.23 g, at a yield of 79.7%.

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