反应详情

温度

50 °C

2-Bromo-6-(bromomethyl)pyridine (Example 190, Step 1) (1.50 g, 5.98 mmol), 1H-1,2,3-triazole (520 mL, 8.97 mmol), and K2CO3 (1.652 g, 11.96 mmol) were combined in DMF (5.0 mL) and stirred at 50° C. overnight. The mixture was diluted with water and extracted with EtOAc (2×). The combined organic layers were washed with brine, dried (MgSO4), filtered, and evaporated. Flash chromatography (0-100% EtOAc/hexanes) separated the two regioisomeric products to provide 2-bromo-6-(1H-1,2,3-triazol-1-ylmethyl)pyridine (lower Rf) and 2-bromo-6-(2H-1,2,3-triazol-2-ylmethyl)pyridine (higher Rf) as colorless solids.

1. extractionextracted with EtOAc (2×)
2. washThe combined organic layers were washed with brine
3. dry with materialdried (MgSO4)
4. filtrationfiltered
5. customevaporated
6. customFlash chromatography (0-100% EtOAc/hexanes) separated the two regioisomeric products