反应详情

温度

80 °C

1-Methyl-1H-1,2,3-triazole (0.044 g, 0.530 mmol) was dissolved in THF (5.3 mL) and cooled to −78° C. n-Butyllithium solution in hexanes (0.25 mL, 0.636 mmol) was added dropwise and the solution was stirred for further 5 minutes before zinc chloride (3.18 mL, 1.591 mmol) was added. After 30 minutes at −78° C., the reaction mixture was diluted with DMF (2.1 mL), tetrakis(triphenylphosphine)palladium(O) (0.031 g, 0.027 mmol) and a solution of 6-chloro-2-methoxy-3-nitropyridine (0.1 g, 0.530 mmol) in DMF (0.53 mL) were added. The solution was stirred at 80° C. for 4 hours. After the mixture was cooled to room temperature, H2O and EtOAc were added and the phases were separated. The organic phase was washed with H2O, brine, dried (Na2SO4), filtered and the solvent was removed in vacuo. The residue was purified via Biotage silica gel column chromatography eluting with cyclohexane/EtOAc (99/1 to 50/50) to afford the title compound as a light yellow solid (51 mg, 41%).

1. additionwas added dropwise
2. additionwas added
3. temperatureAfter the mixture was cooled to room temperature
4. customthe phases were separated
5. washThe organic phase was washed with H2O, brine
6. dry with materialdried (Na2SO4)
7. filtrationfiltered
8. customthe solvent was removed in vacuo
9. customThe residue was purified via Biotage silica gel column chromatography
10. washeluting with cyclohexane/EtOAc (99/1 to 50/50)