2,4,6-Tribromophenol → 1,3,5-Tribromo-4-(4-nitrophenoxy)benzene

Beteiligte Stoffe

Reaktionsschritte

A stirred solution of 2,4,6-tribromophenol (3.8 g), 4-fluoronitrobenzene (1:6 g), cesium carbonate (3.7 g) in dimethylformamide (8 mL) was heated at reflux until the starting materials were consumed. The reaction was cooled to room temperature and concentrated. The residue was dissolved in ethyl acetate and washed with sodium hydroxide (2 N), hydrochloric acid (2 N) and brine. Concentration of the organic phase gave 1,3,5-tribromo-4-(4-nitrophenoxy)benzene in quantitative yield. The crude product was used directly in the next step.

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