Diisopropylethylamine → Ammonia

Participants

Reaction Steps

Combine 1-carbobenzyloxy-3-phenyl-3-(2-methanesulfonyloxyethyl)pyrrolidine (10.2 g, 25.3 mmol), (1.34 g, 2.5 mmol), 4-(1-(2-ethoxyethyl)-1H-benzimidazol-2-yl)[1,4]diazepane hydriodic acid salt (16.5 g, 30.4 mmol), and N,N-diisopropylethylamine (18 mL, 101 mmol) in acetonitrile (300 mL). Heat to reflux. After 18 hours, evaporate in vacuo to give a residue. Chromatograph the residue on silica gel eluting with 1/6 containing 1% concentrated aqueous ammonia to give 1-carbobenzyloxy-3-(2-(4-(1-(2-ethoxyethyl)-1H-benzimidazol-2-yl)[1,4]diazepan-1-yl) ethyl)-3-phenylpyrrolidine.

Provenance & Evidence