反应详情

To a solution of 7-hydroxy-benzo[b]thiophene (Boot, J. R.; Brace, G.; Delatour, C. L.; Dezutter, N.; Fairhurst, J.; Findlay, J.; Gallagher, P. T.; Hoes, I.; Mahadevan, S.; Mitchell, S. N.; Rathmell, R. E.; Richards, S. J.; Simmonds, R. G.; Wallace, L.; Whatton, M. A.; Bioorganic & Medicinal Chemistry Letters (2004), 14(21), 5395-5399; 1.0 g, 6.6 mmol) in acetone (15 mL) was added 2-iodoethyl methylether (Ubichem, CAS: 4296-15-5, 2.47 g, 13.2 mmol) and potassium carbonate (1.84 g, 13.2 g). The reaction mixture was stirred at reflux for 16 h, quenched with ice/water, and extracted with ethyl acetate. The organics were washed, dried and concentrated. The residue was chromatographed on silica gel using heptane/ethyl acetate as eluent to obtain 7-(2-methoxy-ethoxy)-benzo[b]thiophene (1.29 g) as a colourless oil. MS (ISP): m/209.1 (M+H)+

1. temperatureat reflux for 16 h
2. customquenched with ice/water
3. extractionextracted with ethyl acetate
4. washThe organics were washed
5. customdried
6. concentrationconcentrated
7. customThe residue was chromatographed on silica gel