反应详情

To a mixture of 5-bromo-2-furaldehyde (1.76 g) and morpholine (1.00 ml) in 40 mL anhydrous THF at room temperature was added acetic acid (0.60 mL) followed by sodium triacetoxyborohydride (3.28 g). The mixture was stirred at room temperature for 3 h and then poured into a saturated solution of sodium bicarbonate (100 mL). After stirring vigorously for 5 min the layers were separated and the aqueous layer was extracted with EtOAc. The combined organic layers were washed with brine, dried (Na2SO4), filtered and evaporated to dryness. Purification of the residue by flash chromatography afforded 2.09 g (8.49 mmol, 84% yield) of 4-(5-bromo-2-furylmethyl)morpholine.

1. stirringAfter stirring vigorously for 5 min the layers
2. customwere separated
3. extractionthe aqueous layer was extracted with EtOAc
4. washThe combined organic layers were washed with brine
5. dry with materialdried (Na2SO4)
6. filtrationfiltered
7. customevaporated to dryness
8. customPurification of the residue by flash chromatography