Tetrahydrofuran → (R)-4-((R)-1-(6-chloro-3-((2-(trimethylsilyl)ethoxy)methyl)-3H-imidazo[4,5-c]pyridin-4-yloxy)ethyl)-1-((R)-1-(4-methoxyphenyl)ethyl)pyrrolidin-2-one

Participants

Reaction Steps

A solution of NaHMDS in THF (1M, 0.85 ml, 0.85 mmol) was added to a solution of (R)-4-((R)-1-hydroxyethyl)-1-((R)-1-(4-methoxyphenyl)ethyl)pyrrolidin-2-one 1.04 (205 mg, 0.78 mmol) in DMF (10 mL) at room temperature. After 5 minutes, a solution of 6-chloro-4-(methylsulfonyl)-3-((2-(trimethylsilyl)ethoxy)methyl)-3H-imidazo[4,5-c]pyridine 2.09 (256 mg, 0.707 mmol) in DMF (2 mL) was added and mixture stirred at room temperature. After 10 minutes, LC/MS indicated full conversion to desired product. Reaction mixture was quenched with 15 mL of water, poured into 30 mL of water, and extracted with ethyl acetate (100 mL). Organics were washed with Brine (2×50 mL), dried (MgSO4), filtered, and concentrated under reduced pressure to yield (R)-4-((R)-1-(6-chloro-3-((2-(trimethylsilyl)ethoxy)methyl)-3H-imidazo[4,5-c]pyridin-4-yloxy)ethyl)-1-((R)-1-(4-methoxyphenyl)ethyl)pyrrolidin-2-one 2.11, which was used in the next step without further purification.

Provenance & Evidence