ARYLATION CATALYTIQUE D'ORGANOPHOSPHORES. PRODUITS DE L'ARYLATION, CATALYSEE PAR LES SELS DE NICKEL (II), DE COMPOSES DU PHOSPHORE TRICOORDINE

Article abstract of DOI:10.1016/S0022-328X(00)85905-7

Analysis of the products from the nickel (II) bromide catalysed arylation of tricoordinated phosphorus compounds R2P-Z (Z = H, Cl, SR,NR2) pointed out that this arylation always takes place on phosphorus resulting at first in formation of pseudophosphonium salts.Only the aminophosphonium salts are stable under reaction conditions; the other salts undergo several transformations which can be brought together in a general reactivity scheme to account for all the side products.On regard to other heteroatoms these results point out a particular ability of phosphorus to be arylated under nickel (II) catalysis.The reaction with secondary phosphines can be applied to synthetise diarylphosphonium salts.