反应详情

PS-DCC (1.02 g, 1.35 mmol, loading: 1.33 mmol/g) is suspended in dry THF (13.5 mL). Then HOBT (0.21 g, 1.35 mmol), [(4-fluoro-phenyl)-methyl-amino]-phenyl-acetic acid hydrochloride (I71) (0.20 g, 0.68 mmol) and (R)-quinuclidin-3-ol (0.26 g, 2.03 mmol) are added. The mixture is shaken at RT overnight. PS-DCC is filtered off, washed with EtOAc and THF. The solution is evaporated and the residue is portioned between EtOAc and water. The organic phase is washed with sat. NaHCO3, dried (Na2SO4) and evaporated. The crude is purified by flash chromatography (DCM/MeOH=95/5) to afford the title compound as a colorless oil (209 mg, 84% yield, mixture of diastereoisomers).

1. filtrationPS-DCC is filtered off
2. washwashed with EtOAc and THF
3. customThe solution is evaporated
4. washThe organic phase is washed with sat. NaHCO3
5. dry with materialdried (Na2SO4)
6. customevaporated
7. customThe crude is purified by flash chromatography (DCM/MeOH=95/5)