Dichloromethane → HCID 178502432, compound

Participants

Reaction Conditions

Reaction Steps

To a suspension of (2S,4S)-4-methyl-2-{4-[4′-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-biphenyl-4-yl]-1H-imidazol-2-yl}-pyrrolidine-1-carboxylic acid tert-butyl ester (138 mg, 0.2606 mmol), methyl ((S)-1-((2S,4S)-2-(5-iodo-1H-benzo[d]imidazol-2-yl)-4-methylpyrrolidin-1-yl)-3-methyl-1-oxobutan-2-yl)carbamate (126.2 mg, 0.2606 mmol), Pd(DPPF)(Cl)2.CH2Cl2 (21.3 mg, 0.02606 mmol) in 2-propanol (1.4 mL) is added 1M aqueous NaHCO3 (1.3 mL, 1.3 mmol). The reaction mixture is heated at 80° C. for 19 hours, cooled to RT, and extracted with dichloromethane (2×10 mL). The organic layer is dried over Na2SO4, filtered, and concentrated to dryness. The residue is purified by flash column chromatography on silica gel (50 to 100% EtOAc in hexanes) to give (2S,4S)-2-[4-(4′-{2-[(2S,4S)-1-((S)-2-methoxycarbonylamino-3-methyl-butyryl)-4-methyl-pyrrolidin-2-yl]-1H-benzoimidazol-5-yl}-biphenyl-4-yl)-1H-imidazol-2-yl]-4-methyl-pyrrolidine-1-carboxylic acid tert-butyl ester (75 mg, 38%). HPLC: Waters symmetry shield RP18 3.5 μm 4.6 mm×50 mm, solvent A: 0.01% TFA in acetonitrile, solvent B: 0.01% TFA in water, gradient: 15:85 A:B to 90:10 A:B over 10 minutes, RT=4.87 min.

Provenance & Evidence