Repozytorium
Wyszukaj
Kolekcje
Inne
Carbonylative Suzuki coupling reaction catalyzed by a hydrospirophosphorane palladium complex.
Autorzy
Rok wydania
2017
Czasopismo
Numer woluminu
9
Strony
4397-4409
DOI
10.1002/cctc.201700946
Kolekcja
Język
Angielski
Typ publikacji
Artykuł
A Pd complex with the H-spirophosphorane ligand, PdCl2{P(OCMe2CMe2O)OC6H4NH2} (Cat. 1), was used as the catalyst in the carbonylative Suzuki coupling of substituted iodobenzenes with arylboronic acids and with sodium tetraphenylborate. Substituted diarylketones were obtained in good to excellent yields and a selectivity over 95 % under 1 atm of CO with 1.5 mol % of the catalyst. The promoting role of the H-spirophosphorane ligand in the catalytic process was evidenced. We used X-ray photoelectron spectroscopy, TEM, and 31P NMR spectroscopy to reveal that during the reaction Cat. 1 undergoes transformation into Pd complexes that bear the spirophosphorane ligand or other P ligands formed by its dealkylation and to Pd nanoparticles. All these Pd species contribute to the high productivity of the system.
Słowa kluczowe
cross-coupling, ketones, nanoparticles, palladium, ligands
Adres publiczny
http://dx.doi.org/10.1002/cctc.201700946
Strona internetowa wydawcy
Podobne publikacje
Pd nanoparticles for coupling reactions and domino/tandem reactions.
Trzeciak Anna M.
Synthesis and catalytic evaluation of phosphanylferrocene ligands with cationic guanidinium pendants and varied phosphane substituents.
Bárta Ondřej, Císařová Ivana, Mieczyńska Ewa, Trzeciak Anna M., Štěpnička Petr
The role of palladium nanoparticles in catalytic C–C cross-coupling reactions.
Trzeciak Anna M., Augustyniak Adam W.