反应详情

Heat a solution of 2-(4-fluoro-2-nitro-phenylamino)-5-trifluoromethyl-benzonitrile (9.995 g, 30.73 mmol) in ethanol (170 ml) to 60° C. Add to a solution of tin (II) chloride (29.1 g, 153.67 mmol) in 5.0 N hydrochloric acid (170 ml) and heat to reflux. After 18 hours, cool the reaction to room temperature and place in a freezer for 24 hours. The product precipitates from the solution and is collected by filtration. Obtained 2.253 g of the title compound (6.79 mmol, 22% yield) as a yellow amorphous solid: Mass Spectrum (m/e): 296(M+1).

1. temperatureheat to reflux
2. temperaturecool
3. customthe reaction to room temperature
4. waitplace in a freezer for 24 hours
5. customThe product precipitates from the solution
6. filtrationis collected by filtration