反应详情

温度

160 °C

To a solution of 4-isopropoxyphenol (CAS #7495-77-4. 3 g, 19.7 mmole), at room temperature in DMSO (30 mL) was added in turn, 2-bromothiazole (3.23 g, 19.7 mmole) and potassium carbonate (5.44 g, 39.4 mmole), heated at 160° C. for 3 hours. The reaction mixture was cooled, diluted with ethyl acetate, washed with water and brine sequentially, dried over magnesium sulfate, filtered and concentrated. The residue was purified on Silica gel column using a gradient of 5 to 25% ethyl acetate in hexane and provided 2.54 g (55%) of the title compound as yellowish oil. 1H NMR (300 MHz, CDCl3) δ ppm 7.22 (d, J=3.68 Hz, 1H) 7.15-7.21 (m, 2H) 6.86-6.95 (m, 2H) 6.76 (d, J=4.04 Hz, 1H) 4.43-4.60 (heptet, J=6.25 Hz, 1H) 1.34 (d, J=6.25 Hz, 6H). MS (ESI) m/z 236 (M+H)+.

1. temperatureThe reaction mixture was cooled
2. washwashed with water and brine sequentially
3. dry with materialdried over magnesium sulfate
4. filtrationfiltered
5. concentrationconcentrated
6. customThe residue was purified on Silica gel column