4-Nitrophenol → 1-(2-Bromo-1,1,2-trifluoroethoxy)-4-nitrobenzene

Beteiligte Stoffe

Reaktionsbedingungen

Reaktionsschritte

278 g of 4-nitrophenol and 56 g of potassium hydroxide were dissolved in 800 ml of dimethylformamide, 179 g of bromotrifluoroethylene were fed in, a little at a time, at 40° C., and stirring was then continued for 2 hours at 60° C. The solvent was removed under reduced pressure in a rotary evaporator, the residue was poured into ice-water and extracted with 3×500 ml of methylene chloride, the extract was washed with dilute sodium hydroxide solution and water and dried over Na2SO4, and the solvent was removed. When the residue was distilled, 279.5 g of pure product passed over at 114° C./1.3 mbar.

Herkunft & Nachweise