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An efficient synthesis of functional stilbenes in Hiyama coupling reaction catalysed by H-spirophosphorane palladium complex.
Autorzy
Rok wydania
2011
Czasopismo
Journal of Molecular Catalysis A-Chemical
Numer woluminu
351
Strony
128-135
DOI
10.1016/j.molcata.2011.09.025
Kolekcja
Język
Angielski
Typ publikacji
Artykuł
An efficient Hiyama cross-coupling reaction of functionalised styrylsilanes with iodo- and bromobenzene has been performed using complex [PdCl2P(OCH2CMe2NH) OCH2CMe2NH2] as precatalyst. The styrylsilanes underwent cross-coupling reactions with excellent selectivity and yield, up to 99%, of the corresponding E-stilbenes. When (E)-[1-(4-bromophenyl)-2-(1,1,3,3,3-pentamethyldisiloxy)]ethene was used as a source of the silane, a homocoupling reaction took place and polymeric compound containing 0.77% of palladium in the form of Pd(0) nanoparticles was obtained. This material used as a catalyst made it possible to obtain 40% and 38% of the Hiyama cross-coupling product in two subsequent runs.
Słowa kluczowe
Cross-coupling, Hiyama coupling, Palladium catalyst, Stilbenes, Vinylsiloxanes
Adres publiczny
https://doi.org/10.1016/j.molcata.2011.09.025
Strona internetowa wydawcy
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