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Inne
Monomeric triphenylphosphite palladacycles with N-imidazole ligands as catalysts of Suzuki-Miyaura and Sonogashira reactions.
Autorzy
Rok wydania
2011
Czasopismo
Journal of Organometallic Chemistry
Numer woluminu
696
Strony
3601-3607
DOI
10.1016/j.jorganchem.2011.08.011
Kolekcja
Język
Angielski
Typ publikacji
Artykuł
Three monomeric triphenylphosphite palladacycles of the formula [PdCl(P–C)(im)], where P–C = P(OC6H4)(OC6H5)2, im = 1-methylimidazole, 2, 1,2-dimethylimidazole, 3, and 1-butylimidazole, 4, were obtained in reaction of [PdCl(P–C)]2, 1, with the respective imidazoles. These complexes exhibited high catalytic activity in the Suzuki–Miyaura reaction in ethane-1,2-diol and in the Sonogashira reaction in ionic liquids, [bmim]BF4 and [bmim]PF6. While the application of two imidazoles per palladium caused improvement of the reaction yield, an inhibiting effect was found in both reactions when 1-methylimidazole or 1-butylimidazole was used in 20-fold excess relative to palladium.
Słowa kluczowe
Palladacycles, Imidazole ligands, Suzuki–Miyaura reaction, Sonogashira reaction, ionic liquids
Adres publiczny
https://doi.org/10.1016/j.jorganchem.2011.08.011
Strona internetowa wydawcy
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