Dicyclohexylcarbodiimide → (R)-quinuclidin-3-yl 2-(4-methoxyphenyl)-2-(piperidin-1-yl)acetate

Participants

Reaction Steps

Lithium 2-(4-methoxyphenyl)-2-(piperidin-1-yl)acetate (384 mg, 1.50 mmol), DCC (621 mg, 3.01 mmol), and HOBT (461 mg, 3.01 mmol) were dissolved in dry THF (16 ml). (R)-quinuclidin-3-ol (574 mg, 4.51 mmol) was added and the mixture was stirred at room temperature for 16 hours. THF was evaporated and the crude was dissolved in EtOAc, washed with sat. NaHCO3, water and brine. The organic layer was dried over Na2SO4, filtered and evaporated. The crude was purified by flash chromatography (DCM/MeOH/NH4OH=9/1/0.02) to obtain (R)-quinuclidin-3-yl 2-(4-methoxyphenyl)-2-(piperidin-1-yl)acetate (207 mg, 38.4% yield) as a colourless oil.

Provenance & Evidence