反应详情

2-Chloro-N-(pyridin-2-yl)acetamide (30.4 mg, 0.18 mmol) was added to a solution of (R)—((R)-quinuclidin-3-yl) 2-phenyl-2-(phenylamino)acetate (diastereomer 1 of I2) (60 mg, 0.18 mmol) in EtOAc (2 ml). The reaction mixture was stirred at room temperature overnight (UPLC-MS: complete conversion). The solvent was evaporated, and the crude rodcut was triturated with Et2O (2 ml). The product was further purified by preparative HPLC to obtain (R)-1-(2-oxo-2-(pyridin-2-ylamino)ethyl)-3-((R)-2-phenyl-2-(phenylamino)acetoxy)-1-azoniabicyclo[2.2.2]octane chloride (34.5 mg, 38.2% yield).

1. customThe solvent was evaporated
2. customthe crude rodcut was triturated with Et2O (2 ml)
3. customThe product was further purified by preparative HPLC