1,2-Dimethoxyethane → HCID 178502419, compound

Participants

Reaction Conditions

Reaction Steps

A mixture of methyl (R)-2-oxo-1-phenyl-2-((S)-2-(5-(4-(6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzo[b]thiophen-2-yl)phenyl)-1H-imidazol-2-yl)pyrrolidin-1-yl)ethylcarbamate (261 mg, 0.39 mmol), (S)-tert-butyl 2-(4-bromo-1H-imidazol-2-yl)pyrrolidine-1-carboxylate (125 mg, 0.39 mmol), and tetrakis(triphenylphosphine) palladium (0) (45 mg, 0.039 mmol), 1,1′-Bis(diphenylphosphino)ferrocene-palladium(II)dichloride dichloromethane complex (29 mg, 0.039 mmol), potassium carbonate (109 mg, 0.78 mmol), dimethoxyethane (5 mL), and water (1 mL) was heated at 85° C. for 16 hours. The solvent was removed under reduced pressure and the residue was take up in dichloromethane (15 mL) and washed with water (5 mL) and brine (5 mL). The organic phase was dried over sodium sulfate and filtered. The solvent was removed under reduced pressure and the residue was subjected to flash chromatography with eluant of (10% methanol in ethyl acetate) and hexane. The product containing fractions were combined and the solvent was removed under reduced pressure to provide (S)-tert-Butyl 2-(4-(2-(4-(2-((S)-1-((R)-2-(methoxycarbonylamino)-2-phenylacetyl)pyrrolidin-2-yl)-1H-imidazol-5-yl)phenyl)benzo[b]thiophen-6-yl)-1H-imidazol-2-yl)pyrrolidine-1-carboxylate (88 mg, 0.011 mmol, 28%).

Provenance & Evidence