2,5-Dichlorophenol → 2,5-Dichloro-4-nitrophenol

Beteiligte Stoffe

Reaktionsschritte

2,5-dichlorophenol (72 g, 440 mmol) were slurried in 100 ml dichloromethane which resulted in an endothermic reaction. To this mixture were slowly added 30 ml (480 mmol) concentrated nitric acid. The reaction was allowed to reach and maintain reflux. The mixture was stirred until it reached ambient temperature and all materials remained in solution. 50 g of ice were added and solids precipitated. The mixture was filtered cold and washed with 25 ml dichloromethane, 50 ml dichloromethane, then twice with 25 ml dichloromethane to yield 28.4 g of 2,5-dichloro-4-nitrophenol.

Herkunft & Nachweise