反应详情

A suspension of Example 66B (89 mg, 0.31 mmol) and HOBT (46 mg, 0.35 mmol) in DMF (4 mL) at room temperature was treated with aniline (0.029 mL, 0.31 mmol), NMM (0.086 mL, 0.78 mmol) and EDC.HCl (66 mg, 0.34 mmol), stirred overnight, and partitioned between water and ethyl acetate. The aqueous phase was extracted three times with ethyl acetate and the combined organic extracts ware washed with water, and brine, dried (Na2SO4), filtered, and concentrated to a volume of about 3 mL. The product was treated with hexanes and the resulting precipitate was collected by filtration to provide 84 mg (75%) of the desired product. MS(ESI(+)) m/e 361 (M+H)+; 1H NMR (300 MHz, DMSO-d6) δ 10.40 (s, 1H); 8.30 (s, 1H); 8.12 (d, J=8.4 Hz, 2H); 7.80 (d, J=7.5 Hz, 2H); 7.58 (d, J=8.4 Hz, 2H); 7.37 (t, J=7.5 Hz, 2H); 7.12 (t, J=7.5 Hz, 1H); 2.32 (s, 3H); Anal. Calcd. for C20H16N4OS.0.1C4H8O2: C, 66.36; H, 4.59; N, 15.17. Found: 66.07; H, 4.76; N, 15.32.

1. custompartitioned between water and ethyl acetate
2. extractionThe aqueous phase was extracted three times with ethyl acetate
3. washthe combined organic extracts ware washed with water, and brine
4. dry with materialdried (Na2SO4)
5. filtrationfiltered
6. concentrationconcentrated to a volume of about 3 mL
7. additionThe product was treated with hexanes
8. filtrationthe resulting precipitate was collected by filtration