Repozytorium
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Kolekcje
Inne
Monomolecular, nanosized and heterogenized palladium catalysts for the Heck reaction.
Autorzy
Rok wydania
2007
Czasopismo
Coordination Chemistry Reviews
Numer woluminu
251
Strony
1281-1293
DOI
10.1016/j.ccr.2006.11.013
Kolekcja
Język
Angielski
Typ publikacji
Artykuł
The review comprises discussion concerning transformations of soluble and insoluble palladium catalysts during the Heck reaction. Special attention is paid to two essential stages of the Heck reaction: reduction of Pd(II) in precursor to Pd(0) and oxidative addition of the main substrate, aryl halide, to Pd(0) in a form of monomolecular or nanosized Pd(0) colloid. It was shown that both, soluble and insoluble, palladium precursors form at the presence of the tetrabutyl ammonium salt soluble Pd(II) complexes of general formula [Bu4N]2[PdPhxX4−x]. Formation of these soluble complexes explains the change of Pd(0) nanoparticles size during the Heck reaction. Additionally the Heck reaction can proceed on the surface of Pd(0) nanoparticles (stabilized colloids).
Słowa kluczowe
Heck reaction, palladium, nanaoparticles, Pd(0) colloid, Heterogenized palladium catalyst
Adres publiczny
https://doi.org/10.1016/j.ccr.2006.11.013
Strona internetowa wydawcy
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