反应详情

温度

0 °C

2-tert-Butyl-5-nitrobenzenamine (70 g, 359 mmol) and a catalytic amount of DMAP were dissolved into THF (1.5 L) under N2. Triethylamine (109 g, 1077 mmol) was added and the solution was cooled to 0° C. Bromoacetyl bromide (207 g, 1023 mmol) was then added and the reaction was stirred at room temperature for 16 hours. The reaction was then partially concentrated under reduced pressure, treated with water, and extracted three times with EtOAc. The EtOAc extracts were washed with brine, combined, dried over Na2SO4 and concentrated to a black oil. This oil was purified using silica chromatography, 95:5:0.5 CH2Cl2:MeOH:NH4OH, giving 2-bromo-N-(2-tert-butyl-5-nitrophenyl)acetamide as a brown solid.

1. concentrationThe reaction was then partially concentrated under reduced pressure
2. additiontreated with water
3. extractionextracted three times with EtOAc
4. washThe EtOAc extracts were washed with brine
5. dry with materialdried over Na2SO4
6. concentrationconcentrated to a black oil
7. customThis oil was purified