反应详情

温度

80 °C

Thionyl chloride (120.5 g) was added to a stirred mixture of 2-bromobenzoic acid (194 g) in toluene (500 ml) and N,N-dimethylformamide (DMF) (5 ml) and the mixture heated at 80° C. for 4 hours. The solution was cooled to 20° C. and added slowly to a solution of 4-nitroaniline (133.1 g) in toluene (500 ml) and NMP (120 ml), maintaining the temperature of the reaction mixture between 20°-25° C. The reaction mixture was then stirred for 24 hours when a solid precipitated. Water (360 ml) was added with rigorous stirring and the suspended solid collected by filtration, and washed successively with water, toluene and acetonitrile to give 2-bromo-N-(4-nitrophenyl)benzamide as a solid, in 87% yield, which was used without further purification or characterisation.

1. temperatureThe solution was cooled to 20° C.
2. temperaturemaintaining the temperature of the reaction mixture between 20°-25° C
3. customprecipitated
4. additionWater (360 ml) was added
5. stirringwith rigorous stirring
6. filtrationthe suspended solid collected by filtration
7. washwashed successively with water, toluene and acetonitrile