反应详情

温度

100 °C

To a solution of 4-methyl-2-(5-trifluoromethanesulfonyloxy-4′-trifluoromethyl-biphenyl-3-yl)-pentanoic acid ethyl ester, 1 g (250 mg, 0.49 mmol) in toluene (5 mL) in a sealed tube was added racemic-2-(di-t-butylphosphino)-1,1′-binaphthyl (59 mg, 0.15 mmol), Pd(OAc)2 (110 mg, 0.49 mmol), 2-propyl-piperidine hydrogen bromide (152 mg, 0.73 mmol). The system was flushed with nitrogen. To this was added NaOtBu (118 mg, 1.23 mmol) and heated to 100° C. for 3 h. The system was cooled to room temperature and quenched by slow addition of water. The mixture was extracted with EtOAc (3×20 mL). The organic phase was washed with saturated NaHCO3 solution and brine. The organic fraction was dried (MgSO4) and concentrated in vacuo. The crude mixture was purified by ISCO column chromatography to obtain 4-methyl-2-[5-(2-propyl-piperidin-1-yl)-4′-trifluoromethyl-biphenyl-3-yl]-pentanoic acid ethyl ester. Calcd for C29H38F3NO2 (M+H) 490.61, Found 490.4.

1. customThe system was flushed with nitrogen
2. temperatureThe system was cooled to room temperature
3. customquenched by slow addition of water
4. extractionThe mixture was extracted with EtOAc (3×20 mL)
5. washThe organic phase was washed with saturated NaHCO3 solution and brine
6. dry with materialThe organic fraction was dried (MgSO4)
7. concentrationconcentrated in vacuo
8. customThe crude mixture was purified by ISCO column chromatography