反应详情

温度

100 °C

A mixture of the 6-bromo-benzofuran 3-3 (1.74 g, 8.79 mmol), ethyl acrylate (1.09 g, 10.98 mmol), Pd(OAc)2 (0.099 g, 0.44 mmol), tri-o-tolylphosphine (0.268 g, 0.880 mmol), and sodium acetate (3.60 g, 43.9 mmol) in DMF (10 mL) was heated to 100° C. in a sealed tube for 4 h. The mixture was cooled to room temperature, diluted with water, and extracted with Et2O (2×40 mL). The combined organic extracts were washed with brine (30 mL), dried over MgSO4, filtered, and concentrated. The residue was purified by flash chromatography (10% ethyl acetate/hexanes) to give the ester 3-4 as an off-white solid.

1. temperatureThe mixture was cooled to room temperature
2. extractionextracted with Et2O (2×40 mL)
3. washThe combined organic extracts were washed with brine (30 mL)
4. dry with materialdried over MgSO4
5. filtrationfiltered
6. concentrationconcentrated
7. customThe residue was purified by flash chromatography (10% ethyl acetate/hexanes)