反应详情

温度

80 °C

Diisopropylethylamine (0.65 mL, 3.7 mmol) was added to a mixture of 3-chloro-4-nitro-benzoic acid (0.2 g, 0.992 mmol), aniline (0.1 mL, 1.1 mmol) and HBTU (0.42 g, 1.1 mmol) in acetonitrile (20 mL) and the reaction mixture was stirred at 80° C. for 8 hours and then at room temperature for 62 hours. The resulting mixture was then partitioned between water and ethyl acetate, the organic layer was separated and the aqueous layer was extracted twice with ethyl acetate. The combined organic extracts were washed with brine, dried over anhydrous sodium sulfate, filtered and evaporated under reduced pressure. The crude residue was purified on a silica gel plug (hexane/EtOAc, 80/20) to afford 135 mg (49% yield) of 3-chloro-4-nitro-N-phenyl-benzamide as a yellow solid.

1. waitat room temperature for 62 hours
2. customThe resulting mixture was then partitioned between water and ethyl acetate
3. customthe organic layer was separated
4. extractionthe aqueous layer was extracted twice with ethyl acetate
5. washThe combined organic extracts were washed with brine
6. dry with materialdried over anhydrous sodium sulfate
7. filtrationfiltered
8. customevaporated under reduced pressure
9. customThe crude residue was purified on a silica gel plug (hexane/EtOAc, 80/20)