Ethyl Acetate → 1-ethoxycarbonyl-4-(1-(5-(ethoxycarbonyl)fur-2-ylmethyl)-1H-benzimidazol-2-yl)[1,4]diazepane

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Reaction Steps

Combine 1-ethoxycarbonyl-4-(1H-benzimidazol-2-yl)[1,4]diazepane (10 mmol) and sodium hydride (10 mmol) in dimethylformamide (20 mL). After gas evolution ceases, add ethyl 5-chloromethyl-2-furoate (10 mmol) and stir. After 3 days, evaporate in vacuo to give a residue. Combine the residue and ethyl acetate. Extract with water and brine. Dry the organic layer over Na2SO4, filter, and evaporate in vacuo to give 1-ethoxycarbonyl-4-(1-(5-(ethoxycarbonyl)fur-2-ylmethyl)-1H-benzimidazol-2-yl)[1,4]diazepane.

Provenance & Evidence