反应详情

温度

0 °C

To a solution of 3-tetrahydropyranyloxy-1-propanol (1.0 g, 6.25 mmol) in DMF (10.0 mL) was added NaH (0.17 g, 95%) and stirred at 0° C. After 30 minutes, 2,5 dibromopyridine (1.0 g, 4.22 mmol) was added and the mixture was stirred at room temperature for 2 hours. The mixture was then poured into 5% cold citric acid (10.0 mL) and extracted with EtOAc (3×15 mL). The combined organic extracts were washed with water (3×15 mL), dried (Na2SO4), and concentrated to dryness. The resulting material was purified by silica gel flash chromatography using 20% EtOAc in hexane containing 0.5% triethyl amine. The appropriate fractions (monitored by TLC in 30% EtOAc in hexane) were combined and concentrated to give the desired product (1.1 g) as a colorless syrup. 1H-NMR and mass spectral data were consistent with the structure.

1. stirringthe mixture was stirred at room temperature for 2 hours
2. extractionextracted with EtOAc (3×15 mL)
3. washThe combined organic extracts were washed with water (3×15 mL)
4. dry with materialdried (Na2SO4)
5. concentrationconcentrated to dryness
6. customThe resulting material was purified by silica gel flash chromatography
7. concentrationconcentrated