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Inne
Palladium complexes with chiral imidazole ligands as potential catalysts for asymmetric C—C coupling reactions.
Autorzy
Rok wydania
2017
Czasopismo
Numer woluminu
455
Strony
595-599
DOI
10.1016/j.ica.2016.05.021
Kolekcja
Język
Angielski
Typ publikacji
Artykuł
Two palladium complexes of the type [Pd(im)(2)Cl-2] containing chiral imidazole ligands (im = 1-bomyloxymethylene imidazole, 1-fenchyloxymethylyne imidazole) were synthesized and structurally characterized. The square planar structure of one of the complexes was confirmed by the X-ray analysis.The new palladium complexes were tested as catalysts in various C-C bond forming reactions, namely Suzuki-Miyaura, carbonylative Suzuki-Miyaura, asymmetric Heck-type coupling reactions and asymmetric conjugate addition of phenylboronic acid to heterocyclic acceptors. In all the reactions the cross -coupling products were obtained with high yield and selectivity under mild conditions. In case of coupling of 2,3-dihydrofuran with phenylboronic acid ee value ca. 10 was observed.
Słowa kluczowe
palladium, chiral imidazole, Suzuki-Miyaura coupling, carbonylative coupling, Assymetric reaction
Adres publiczny
http://dx.doi.org/10.1016/j.ica.2016.05.021
Strona internetowa wydawcy
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