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Inne
Reusable functionalized polysiloxane-supported palladium catalyst for Suzuki-Miyaura cross-coupling.
Autorzy
Rok wydania
2011
Czasopismo
Numer woluminu
282
Strony
270-277
DOI
10.1016/j.jcat.2011.06.023
Kolekcja
Język
Angielski
Typ publikacji
Artykuł
Palladium catalyst, obtained in the reaction of PdCl2(cod) with poly[(3-N-imidazolopropyl)methylsiloxane-co-dimethylsiloxane], was used in the Suzuki–Miyaura cross-coupling of aryl bromides with phenylboronic acid. Catalytic reactions, performed at 40–80 °C in water or 2-propanol/water mixture, led to high yields of 2-methylbiphenyl with TOF up to 25,000 h−1. In recycling experiments, excellent results were obtained in eight subsequent runs. With application of microwave heating, more than 95% of product was formed under mild conditions and short time. XRD, TEM, and XPS methods evidenced the presence of Pd(0) nanoparticles bonded to the polysiloxane support. Their important role in the catalytic process was indicated by the results of mercury poisoning test.
Słowa kluczowe
palladium, Suzuki–Miyaura reaction, Polysiloxane support, Immobilized catalyst, Palladium nanoparticles, Microwave heating
Adres publiczny
https://doi.org/10.1016/j.jcat.2011.06.023
Strona internetowa wydawcy
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Palladium supported on triazolyl-functionalized polysiloxane as recyclable catalyst for Suzuki-Miyaura cross-coupling.
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