反应详情

温度

80 °C

To a solution of Example 4C (0.75 g, 2.31 mmol) in N,N-dimethylformamide/tetrahydrofuran (1:4, 20 mL) were added potassium tert-butoxide (0.77 g, 6.93 mmol), tetrabutylammonium iodide (0.09, 0.23 mmol) and the commercially available HCl salt of 4-(chloromethyl)thiazole (TCI-US, 0.59 g, 3.46 mmol). The reaction mixture was stirred at 80° C. for 16 hours, cooled, diluted with ethyl acetate (20 mL) and quenched with saturated aqueous NaHCO3 (20 mL). The aqueous layer was extracted with ethyl acetate (2×20 mL). The combined organic layers were washed with water (1×25 mL), dried over anhydrous Na2SO4, filtered, and concentrated under reduced pressure. The residue was purified by column chromatography using an Analogix® Intelliflash280 ™ (SiO2, 0-100% ethyl acetate in hexanes) to afford the title compound. 1H NMR (300 MHz, DMSO-d6) δ ppm 1.32 (s, 9 H), 3.76 (s, 3 H), 5.49 (s, 2 H), 7.09 (d, J=9.2 Hz, 1 H), 7.36 (s, 1 H), 7.44 (dd, J=9.0, 2.9 Hz, 1 H), 7.57 (d, J=2.0 Hz, 1 H), 7.61 (d, J=3.1 Hz, 1 H), 9.10 (d, J=2.0 Hz, 1 H); MS (ESI) m/z 422 (M+H)+; Anal. Calculated for C19H20ClN3O2S2: C, 54.08; H, 4.78; N, 9.96. Found: C, 54.10; H, 4.62; N, 9.81.

1. temperaturecooled
2. customquenched with saturated aqueous NaHCO3 (20 mL)
3. extractionThe aqueous layer was extracted with ethyl acetate (2×20 mL)
4. washThe combined organic layers were washed with water (1×25 mL)
5. dry with materialdried over anhydrous Na2SO4
6. filtrationfiltered
7. concentrationconcentrated under reduced pressure
8. customThe residue was purified by column chromatography