反应详情

温度

90 °C

Into a 100-mL three neck round-bottom flask, which was purged and maintained with an inert atmosphere of nitrogen, was placed a solution of 5-iodo-2-(methoxymethyl)-1H-imidazole (compound 230.4, 70 mg, 0.29 mmol) in dioxane (10 mL). Pd(dppf)Cl2 (22 mg, 0.029 mmol), a solution of potassium carbonate (160 mg, 1.16 mmol) in water (2 mL), methyl 2,4-dimethyl-5-(tetramethyl-1,3,2-dioxaborolan-2-yl)benzoate (compound 160.1, 168 mg, 0.58 mmol) were added to the reaction. The reaction mixture was stirred overnight at 90° C., then quenched with 10 mL of H2O. The aqueous phase was extracted with 3×10 mL of ethyl acetate and the combined organic layers were washed with 1×10 mL of brine, dried over anhydrous sodium sulfate and concentrated under reduced pressure. The residue was purified by silica gel chromatography with ethyl acetate/petroleum ether (1:1) as eluent to furnish 70 mg (87%) of the title compound as a white solid.

1. customInto a 100-mL three neck round-bottom flask, which was purged
2. temperaturemaintained with an inert atmosphere of nitrogen
3. customquenched with 10 mL of H2O
4. extractionThe aqueous phase was extracted with 3×10 mL of ethyl acetate
5. washthe combined organic layers were washed with 1×10 mL of brine
6. dry with materialdried over anhydrous sodium sulfate
7. concentrationconcentrated under reduced pressure
8. customThe residue was purified by silica gel chromatography with ethyl acetate/petroleum ether (1:1) as eluent