Ligand Controlled Carbon-Carbon Bond FormationversusCarbon-Oxygen Bond Cleavage in the Nickel-Catalyzed Electrochemical Reduction of Allyl o-Halophenyl Ethers

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Abstract
The electrochemical reactivity of ortho-allyloxy halobenzenes in the presence of Ni(II) complexes as catalysts is determined by the nature of the ligand. Ni(II)-Cyclam complexes catalyze a cyclization reaction, whereas with Ni(II)-bipyridine complexes, the allyl-oxygen bond is selectively cleaved.