反应详情

温度

15 °C

Into a 50-mL round-bottom flask, was placed a solution of tert-butyl 4-(1-benzofuran-6-yl)piperidine-1-carboxylate (compound 63.4, 200 mg, 0.66 mmol) in dichloromethane (3 mL) and trifluoroacetic acid (1 mL). The resulting solution was stirred at 15° C. for 1 hour, then the pH was carefully adjusted to =9 with aqueous sodium hydroxide (2 M). The mixture was diluted with H2O (20 mL) and the layers were separated. The aqueous phase was extracted with dichloromethane (4×20 mL) and the combined organic layers were washed with brine (30 mL), dried (Na2SO4), filtered, and concentrated under reduced pressure to yield the title compound as a brown oil (150 mg, crude).

1. customInto a 50-mL round-bottom flask, was placed
2. customthe layers were separated
3. extractionThe aqueous phase was extracted with dichloromethane (4×20 mL)
4. washthe combined organic layers were washed with brine (30 mL)
5. dry with materialdried (Na2SO4)
6. filtrationfiltered
7. concentrationconcentrated under reduced pressure