2026-04-13T22:38:59Zhttps://recercat.cat/oai/requestoai:recercat.cat:2072/3560472024-12-20T17:13:00Zcom_2072_300912com_2072_4427col_2072_301309
2019-05-22T13:03:17Z
urn:hdl:2072/356047
Vanadium(V) Catalysts with High Activity for the Coupling of Epoxides and CO2: Characterization of a Putative Catalytic Intermediate
Miceli, Claudia
Rintjema, Jeroen
Martin, Eddy
Escudero-Adán, Eduardo C.
Zonta, Cristiano
Licini, Giulia
Kleij, Arjan W.
Vanadium(V) complexes derived from aminotriphenolate ligands are
demonstrated to be highly active catalysts for the coupling of various terminal and internal epoxides with carbon dioxide to afford a series of substituted organic carbonates in good yields. Intriguingly, a V(V) complex bearing peripheral chloride groups on the ligand framework allowed for the formation and isolation of a rare complex that incorporates a ring-opened epoxide with one of the phenolateO atoms acting as a nucleophile and the metal center as a Lewis acidic site. This unusual structure was characterized by X-ray diffraction and 51V-NMR, and was shown to exhibit catalytic activity for the coupling of propylene oxide and CO2 when combined post-synthetically with these substrates. The results obtained herein clearly show that vanadium complexes in a high oxidation state are powerful catalysts for the activation of challenging internal epoxides, and their conversion into cyclic organic carbonates.
2019-05-22T13:03:17Z
2024-04-23T10:40:42Z
2019-05-22T13:03:17Z
2024-04-23T10:40:42Z
2017-02-16
info:eu-repo/semantics/article
info:eu-repo/semantics/acceptedVersion
http://hdl.handle.net/2072/356047
https://doi.org/10.1021/acscatal.7b00109
eng
info:eu-repo/semantics/openAccess
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