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Catalytic activity of Pd(II) complexes with triphenylphosphito ligands in the sonogashira reaction in ionic liquid media.
Autorzy
Rok wydania
2009
Czasopismo
Numer woluminu
133
Strony
262-266
DOI
10.1007/s10562-009-0181-y
Kolekcja
Język
Angielski
Typ publikacji
Artykuł
The reactivity of palladacycle dimeric complexes with substituted triarylphosphito ligands P(OR)3 (R=Ph, m-MeC6H4, o-MeC6H4, C6H3-2,4-tBu2) as well as their non-orthometallated analogues PdCl2[P(OR)3]2 was tested in a copper-free Sonogashira reaction with iodobenzene and phenylacetylene as substrates and imidazolium ionic liquids as the reaction medium. The ionic liquids [bmim][PF6], [bmim][BF4] and [emim][SO4Et] were chosen. The palladium complexes studied showed high activity, and the yield of diphenylacetylene ranged from 31 to 98% in 1h. The best results were obtained in [bmim][PF6] for PdCl2[P(O-m-MeC6H4)3]2 (84%) and for orthopalladated dimer with the same phosphite (98%).
Słowa kluczowe
palladium, Orthometallation, Sonogashira, Ionic liquids
Adres publiczny
http://dx.doi.org/10.1007/s10562-009-0181-y
Strona internetowa wydawcy
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