Dichloromethane → 1-(3,4,5-Trimethoxybenzoyl)-3-(2-(4-(1-(2-ethoxyethyl)-1H-benzimidazol-2-yl)[1,4]diazepan-1-yl)ethyl)-3-phenylpyrrolidine

Participants

Reaction Steps

Combine 1-(3,4,5-trimethoxybenzoyl)-3-phenyl-3-(2-methanesulfonyloxyethyl)pyrrolidine (1.0 g, 2.2 mmol) and 4-(1-(2-ethoxyethyl)-1H-benzimidazol-2-yl)[1,4]diazepane (0.72 g, 2.2 mmol), and N,N-diisopropylethylamine (0.75 mL, 4.4 mmol) in acetonitrile (70 mL). Heat to reflux. After 72 hours, cool and pour the reaction mixture into dichloromethane (700 mL). Extract twice with water and then brine. Dry the organic layer over Na2SO4, filter, and concentrate in vacuo to obtain a residue. Chromatograph the residue on a short column of silica gel eluting with 25% methanol/0.6% concentrated aqueous ammonia/ethyl acetate to give the title compound: Rf=0.38 (silica gel, 25% methanol/0.6% concentrated aqueous ammonia/ethyl acetate).

Provenance & Evidence