Efficient Catalytic Activity of Copper/Aluminum Hydrotalcite in Diaryl Ether Synthesis

A simple copper/aluminium hydrotalcite (Cu/Al-HT) catalyzed arylation of phenols with aryl iodides afforded the corresponding diaryl ethers in moderate to excellent yields. This ligand-free Cu/Al-HT catalyzed Coupling of aryl iodides with phenols resulted in high yields of diaryl ethers in the absence of an additive. The catalyst was quantitatively recovered from the reaction by simple filtration and reused for a number of cycles.