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- W587304518 abstract "This manuscript is devoted to a study of the reactivity of simple cobalt(I) salts towards aryl halides, ArX in various conditions: solvent, co-solvent, presence or flot of a metal salt. It is especially shown that the reduction of CoBr2 or Co(BF4)2 leads to a cobalt(I) species which undergoes an oxidative addition in the presence of ArX. The resulting arylcobalt(III) complex is then reduced at the same potential as the starting cobalt(II) compound into an arylcobalt(II) compound. In the presence of zinc(II) salts, the latter undergoes a transmetallation reaction leading to stable arylzinc compounds. These results allowed us to elucidate the mechanisms involved in the electrochemical and the chemical syntheses of arylzinc compounds. Reactivities of cobalt(I) species and arylcobalt(II) compounds have also been studied in the presence of metal salts such as iron(II) and manganese(II). As observed in the presence of zinc(II) salts, these metal salts stabilize the cobalt(I) species affecting thus its reactivity towards aryl halides." @default.
- W587304518 created "2016-06-24" @default.
- W587304518 creator A5082415899 @default.
- W587304518 date "2004-01-01" @default.
- W587304518 modified "2023-09-24" @default.
- W587304518 title "Étude de la réactivité de sels simples du cobalt(I) envers les halogénures aromatiques en absence et présence de cations métalliques (Zn2+, Fe2+, Mn2+) : mécanismes des synthèses électrochimique et chimique de composés arylzinciques" @default.
- W587304518 hasPublicationYear "2004" @default.
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