Triethylamine → Ethyl 3-{5-[(3-nitrobenzoyl)amino]-1H-benzimidazol-1-yl}-3-phenylpropanoate

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Reaction Steps

To a solution of ethyl 3-(5-amino-1H-benzimidazol-1-yl)-3-phenylpropanoate (250 mg, 809 μmol) in dichloromethane (15 mL) was added triethylamine (280 μL, 2.03 mmol), 3-nitrobenzoyl chloride (375 mg, 2.03 mmol) and DMAP (10 mg, 81 μmol). The solution was stirred at room temperature for 144 hours, and was then evaporated in vacuo. The residue was purified by flash column chromatography on silica gel, eluting with a mixture of dichloromethane and methanol (97:3) to afford the title compound, [LCMS (Method A, Mobile Phase II) RT=5.53 min, MH+ 459].

Provenance & Evidence