The halex reaction describes any aryl HALogen EXchange. The chlorine atom in aryl chlorides (with electron-withdrawing substituents) is replaced by fluorine with potassium fluoride using polar solvents such as DMF and DMSO and high temperatures.
Read more about this topic: Finkelstein Reaction
Famous quotes containing the word reaction:
“In a land which is fully settled, most men must accept their local environment or try to change it by political means; only the exceptionally gifted or adventurous can leave to seek his fortune elsewhere. In America, on the other hand, to move on and make a fresh start somewhere else is still the normal reaction to dissatisfaction and failure.”
—W.H. (Wystan Hugh)