A zerovalent nickel-2,2'-bipyridine complex: an efficient catalyst for electrochemical homocoupling of ortho-substituted halides and their heterocoupling with meta- and para-substituted halides

Article abstract of DOI:10.1016/0022-328X(87)85158-6

Electroreduction of ortho-substituted halides Ar-X in a nickel-2,2'-bipyridyl system and N-methylpyrrolidone as solvent gave the homocoupling product ArAr.The nickel-2,2'-bipyridyl system is also a catalyst for the electrochemical heterocoupling of ArX with meta- or para-substituted halides Ar'X'.