反应详情

温度

2.5 °C

To a stirred solution of 4-(propan-2-yloxy)aniline (5.0 g, 33.07 mmol, 1.00 equiv) in 2N hydrochloric acid (35 mL) at 0° C. was added dropwise a solution of sodium nitrite (2.4 g, 34.78 mmol, 1.05 equiv) in water (8 mL). The reaction mixture was stirred at 0-5° C. for 1 h. A solution of SnCl2.H2O (15 g, 66.37 mmol, 2.01 equiv) in 12N hydrochloric acid (20 mL) was then added dropwise at 0-5° C. The resulting mixture was stirred at room temperature overnight. The precipitates was collected by filtration to give 4.7 g (70%) of crude (4-isopropoxyphenyl)hydrazine hydrochloride as a purple solid. The product was used in the next step without further purification.

1. stirringThe resulting mixture was stirred at room temperature overnight
2. filtrationThe precipitates was collected by filtration