反应详情

温度

80 °C

Cyclopentyl methanesulfonate 10c (50 mg, 0.28 mmol), (S)-methyl 2-(6-((4′-hydroxy-2′,6′-dimethylbiphenyl-3-yl)methoxy)-2,3-dihydrobenzofuran-3-yl)acetate 3 h (60 mg, 0.14 mmol), and cesium carbonate (100 mg, 0.30 mmol) were dissolved in 10 mL of N,N-dimethylformamide. The reaction mixture was heated to 80° C. and stirred for 12 hours. The resulting mixture was mixed with 10 mL of water and extracted with ethyl acetate (20 mL×2). The organic phase was washed with water (20 mL×2) and saturated sodium chloride solution (20 mL) successively, dried with anhydrous sodium sulfate, and filtered. The filtrate was concentrated under the reduced pressure and the residue was purified by elution system B to obtain the title compound (S)-methyl 2-(6-((4′-(cyclopentyloxy)-2′,6′-dimethylbiphenyl-3-yl)methoxy)-2,3-dihydrobenzofuran-3-yl)acetate 10d (40 mg, yield 30.0%) as a colorless slime.

1. extractionextracted with ethyl acetate (20 mL×2)
2. washThe organic phase was washed with water (20 mL×2) and saturated sodium chloride solution (20 mL) successively
3. dry with materialdried with anhydrous sodium sulfate
4. filtrationfiltered
5. concentrationThe filtrate was concentrated under the reduced pressure
6. customthe residue was purified by elution system B