反应详情

温度

60 °C

The synthesis was performed with reference to the known literature (US 2006/0148801). A solution of 6-chloro-1-tosyl-1H-pyrrolo[2,3-b]pyridine (0.38 g, 1.2 mmol) in tetrahydrofuran (20 mL) was added with tetrakis(triphenylphosphine)palladium(0) (0.069 g, 0.060 mmol) under an argon atmosphere. Then, the mixture was added dropwise with a 2 M solution of methyl zinc chloride in THF (3.6 mL, 7.2 mmol), and then the mixture was stirred at 60° C. for 48 hours. The reaction mixture was added with water, and the mixture was extracted with ethyl acetate. The organic layer was washed with saturated brine, and then dried over anhydrous magnesium sulfate. The solvent was evaporated under reduced pressure, and then the residue was subjected to silica gel column chromatography (eluted with hexane/ethyl acetate (90:10→50:50)) to obtain 6-methyl-1-tosyl-1H-pyrrolo[2,3-b]pyridine (0.28 g, 81%).

1. extractionthe mixture was extracted with ethyl acetate
2. washThe organic layer was washed with saturated brine
3. dry with materialdried over anhydrous magnesium sulfate
4. customThe solvent was evaporated under reduced pressure
5. washthe residue was subjected to silica gel column chromatography (eluted with hexane/ethyl acetate (90:10→50:50))