反应详情

温度

105 °C

To N-acetyl-N-octylaniline (48.4 g, 196 mmol) there was added 4N hydrochloric acid (100 mL) and the mixture heated to 100-110° C. and stirred at this temperature for 4 days. The reaction mixture was cooled to ambient temperature, diluted with water (100 mL), and hexanes (200 mL). The pH of the reaction mixture was brought to pH 14 by addition of 45% potassium hydroxide with cooling by an ice bath. The layers were separated and the aqueous layer washed with hexanes (100 mL). The combined organic layers were dried over sodium sulfate and concentrated by rotary evaporation to give the desired product as a light brown oil (40 g, 195 mmol, 99%). The product was identified by NMR spectroscopy and mass spectrometry and in general was used without further purification. Analytically pure product was obtained by distillation at reduced pressure: by 145-150° C. (0.5 mm).

1. temperatureThe reaction mixture was cooled to ambient temperature
2. temperaturewith cooling by an ice bath
3. customThe layers were separated
4. washthe aqueous layer washed with hexanes (100 mL)
5. dry with materialThe combined organic layers were dried over sodium sulfate
6. concentrationconcentrated by rotary evaporation