Alkoxylation reactions of aryl halides catalyzed by magnetic copper ferrite

Copper ferrite (CuFe2O4), which is easy-made, air-stable, low cost, easy separable, and regenerable, was applied as catalyst in an efficient method for C–O coupling reactions between various kinds of unactivated alkyl alcohols and aryl halides. This method only adopts 2.5% mol CuFe2O4 catalyst and selectively proceeds to C–O bond formation even sensitive substituents exist in the system.