Ethyl Acetate → HCID 54243045, compound

Participants

Reaction Steps

Combine 1-((S)-α-methylbenzyl)-3-(4-fluorophenylmethyl)-3-(2-methanesulfonyloxyethyl)-2-oxopyrrolidine (Rf=0.59 silica gel, ethyl acetate) (0.67 g, 1.59 mmol) and 4-(1-(2-ethoxyethyl)-1H-benzimidazol-2-yl)[1,4]diazepane hydriodic acid salt (0.86 g, 1.59 mmol), and N,N-diisopropylethylamine (1.24 mL, 7.13 mmol) in acetonitrile (20 mL). Heat to reflux. After 16 hours, cool and evaporate in vacuo to give a residue. Combine the residue and ethyl acetate, extract twice with a saturated aqueous sodium bicarbonate solution and then brine. Dry the organic layer over Na2SO4, filter, and concentrate in vacuo to obtain a residue. Chromatograph the residue on silica gel eluting sequentially with with 15% methanol/dichloromethane and then 15% methanol/dichloromethane/1.0% concentrated aqueous ammonia to give a diastereomer of the title compound.

Provenance & Evidence