Potassium tert-butoxide → (R)-4-((R)-1-(6-bromo-3-methyl-3H-imidazo[4,5-c]pyridin-4-yloxy)ethyl)-1-((R)-1-(4-methoxyphenyl)ethyl)pyrrolidin-2-one

Participants

Reaction Steps

To a solution of (R)-4-((R)-1-hydroxyethyl)-1-((R)-1-(4-methoxyphenyl)ethyl)pyrrolidin-2-one 1.04 (135 mg, 0.51 mmol) in dry THF (6 mL) was added potassium tert-butoxide (72 mg, 0.64 mmol) and the reaction mixture was stirred at rt for 5 min. Then 6-bromo-4-chloro-3-methyl-3H-imidazo[4,5-c]pyridine 2.60 (105 mg, 0.43 mmol) was added and reaction mixture was heated to 60° C. After 12 h, cooled to rt, quenched the reaction mixture with water (0.5 mL) and concentrated. The residue was purified by flash column chromatography (SiO2, 0% MeOH/EtOAc to 20% EtOAc/hexanes) to give ((R)-4-((R)-1-(6-bromo-3-methyl-3H-imidazo[4,5-c]pyridin-4-yloxy)ethyl)-1-((R)-1-(4-methoxyphenyl)ethyl)pyrrolidin-2-one 2.61.

Provenance & Evidence