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• W2029071568 endingPage "399" @default.
• W2029071568 startingPage "379" @default.
• W2029071568 abstract "Abstract This article reviews recent studies on intermolecular transfer of alkynyl and aryl ligands of Ni, Pd, and Pt complexes. The reactions of aryl and alkynyl groups bonded to the Group 10 metal complexes are of significant importance relevant to the mechanism of synthetic organic reactions catalyzed by complexes of these metals. The reaction of alkynylcopperPPh 3 complexes with dichloropalladium complexes leads to formation of mono- and dialkynylpalladium complexes via transmetallation. Aryl(iodo)palladium complexes react with the alkynylcopper complexes to result in rapid and reversible transfer of the alkynyl ligand between Cu(I) and Pd(II) compounds. Aryl(phenylethynyl)palladium complexes with PEt 3 ligands react with aryl(iodo)–palladium and platinum complexes to afford aryl(phenylethynyl)platinum complex. An associative pathway for the reaction is proposed based on the kinetic results. The intermolecular transfer of the alkynyl ligand from Pd(II) to Pt(II) complexes is significantly enhanced by addition of CuI. Aryl ligand transfer of NiBr(Ar)(bpy) (bpy=2,2′-bipyridine) takes place smoothly in DMF to afford an equimolar mixture of dibromo- and diaryl-nickel complexes the latter of which are responsible for reductive elimination of biaryl. A detailed kinetic study of the reaction disclosed the pathway involving a dinuclear Ni intermediate. The introduction of CO 2 into a DMF solution of NiBr(Ph)(bpy) results in formation of biphenyl and benzoic acid. The disproportionation and CO 2 insertion into the Niaryl bond of NiBr(Ar)(bpy) involves the common cationic intermediate [Ni(Ar)(bpy)(DMF)] + Br − formed in polar DMF. Also referred to are recent, related studies on transmetallation of alkynyl and aryl complexes of Group 10 metals." @default.
• W2029071568 created "2016-06-24" @default.
• W2029071568 creator A5037548640 @default.
• W2029071568 creator A5088181080 @default.
• W2029071568 date "2000-03-01" @default.
• W2029071568 modified "2023-09-26" @default.
• W2029071568 title "Transmetallation of alkynyl and aryl complexes of Group 10 transition metals" @default.
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• W2029071568 doi "https://doi.org/10.1016/s0010-8545(99)00210-6" @default.
• W2029071568 hasPublicationYear "2000" @default.
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