反应详情

温度

140 °C

To a solution of methyl 2-[4-chloro-2-methyl-5,6,7,8-tetrahydro[1]benzothieno[2,3-b]pyridin-3-yl]-2-ethoxyacetate (0.040 g; 0.113 mmol) in a mixture of DME-water (3:1) (0.48 mL) were added potassium carbonate (0.062 g; 0.452 mmol), tetrakis(triphenylphosphine)palladium(0) (0.0065 g; 0.0056 mmol) and 4-tolylboronic acid (0.031 g; 0.226 mmol). The solution was stirred for 30 min at 140° C. under microwave irradiation. Ethyl acetate was added to the reaction mixture and the solution was washed with brine. The organic phase was dried over magnesium sulphate, filtered and concentrated under reduced pressure. Purification by flash chromatography on silica gel using a gradient of ethylacetate (5-40%) in heptane furnished 0.025 g (54%) of the title compound as a solid.

1. washthe solution was washed with brine
2. dry with materialThe organic phase was dried over magnesium sulphate
3. filtrationfiltered
4. concentrationconcentrated under reduced pressure
5. customPurification by flash chromatography on silica gel using a gradient of ethylacetate (5-40%) in heptane