反应详情

A solution of methyl 5-(4-(1H-pyrazol-1-yl)benzyl)-4-cyclopropyl-2-formylbenzoate (0.11 g), trans-2-aminocyclopentanol hydrochloride (0.04 g), triethylamine (0.04 mL) and anhydrous magnesium sulfate (0.07 g) in THF (2.20 mL) was stirred at room temperature for 5 hr. The insoluble substance was removed by filtration, and the filtrate was concentrated under reduced pressure. The residue was diluted with methanol (2.20 mL) and THF (2.20 mL), sodium triacetoxyborohydride (0.13 g) was added thereto, and the mixture was stirred overnight at room temperature. The reaction mixture was diluted with ethyl acetate, and the mixture was washed with water and saturated brine. The organic layer was dried over anhydrous magnesium sulfate, and the solvent was evaporated under reduced pressure. The residue was purified by silica gel column chromatography (ethyl acetate/hexane) to give the title compound (0.06 g).

1. customThe insoluble substance was removed by filtration
2. concentrationthe filtrate was concentrated under reduced pressure
3. additionThe residue was diluted with methanol (2.20 mL) and THF (2.20 mL), sodium triacetoxyborohydride (0.13 g)
4. additionwas added
5. additionThe reaction mixture was diluted with ethyl acetate
6. washthe mixture was washed with water and saturated brine
7. dry with materialThe organic layer was dried over anhydrous magnesium sulfate
8. customthe solvent was evaporated under reduced pressure
9. customThe residue was purified by silica gel column chromatography (ethyl acetate/hexane)