Repozytorium
Wyszukaj
Kolekcje
Inne
Rh/DNA nanoparticles, synthesis, characterization and catalytic activity in "on water" asymmetric hydroformylation reaction.
Autorzy
Rok wydania
2018
Czasopismo
Numer woluminu
3
Strony
1727-1736
DOI
10.1002/slct.201702877
Kolekcja
Język
Angielski
Typ publikacji
Artykuł
DNA-stabilized Rh NPs were synthesized by the chemical reduction of Rh(acac)(CO)2 (acac=acetylacetonate) in water at 80 °C. The obtained nanoparticles, Rh/DNA, were characterized by various spectroscopic and microscopic methods, such as IR, UV-Vis, XRD (X-ray diffraction), ICP-AES (Inductively coupled plasma atomic emission spectroscopy), EDX (Energy-dispersive X-ray spectroscopy analysis), TEM (Transmission electron microscopy), and SEM (Scanning electron microscopy) analyses. Their catalytic activity was successfully investigated in the “on water” hydroformylation of styrene. The conversion of styrene and chemoselectivity towards aldehydes were 100%. A high iso/n ratio was also obtained, up to 6.1 and 16.7 with PPh3 (triphenylphosphine) and (R)-BINAP (2,2′-bis(diphenylphosphino)-1,1′-binaphthyl) ligands respectively. In the hydroformylation of vinyl acetate with Rh/DNA, performed in the presence of a chiral BINAP ligand “on water”, high enantioselectivity was obtained, up to 49% ee. These results were significantly better than when utilizing Rh(acac)(CO)2 as a catalyst under the same conditions.
Słowa kluczowe
asymmetric hydroformylation, On water reaction, Rh nanoparticles, Rh/DNA, vinyl acetate
Adres publiczny
https://doi.org/10.1002/slct.201702877
Strona internetowa wydawcy
Podobne publikacje
The new organometallic rhodium-iron homogeneous catalytic system for hydroformylation.
Trzeciak Anna M., Mieczyńska Ewa, Ziółkowski Józef J.