反应详情

A solution of (2,6-difluoro-3-nitrophenyl)acetonitrile (4 g, 20.1 mmol) and aniline (1.83 mL, 20.1 mmol) in DMSO (20 mL) was heated at 100° C. for 16 h. The reaction mixture was diluted with water (100 mL) and extracted with EtOAc (3×20 mL). The combined organic extracts were washed with brine, dried (MgSO4) and concentrated in vacuo. The resultant residue was subjected to flash chromatography (SiO2, eluting with 0-100% EtOAc in cyclohexane) to yield the title compound as brown oil (959 mg, 18%). 1H NMR 400 MHz 6 (CDCl3): 8.27 (1H, dd, J=9.4, 5.9 Hz), 7.38-7.32 (2H, m), 7.17-7.12 (1H, m), 6.98-6.90 (3H, m), 3.44 (2H, d, J=1.7 Hz).

1. extractionextracted with EtOAc (3×20 mL)
2. washThe combined organic extracts were washed with brine
3. dry with materialdried (MgSO4)
4. concentrationconcentrated in vacuo
5. washThe resultant residue was subjected to flash chromatography (SiO2, eluting with 0-100% EtOAc in cyclohexane)