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oai:recercat.cat:2072/3560472024-12-20T17:13:00Zcom_2072_300912com_2072_4427col_2072_301309
RECERCAT author Miceli, Claudia author Rintjema, Jeroen author Martin, Eddy author Escudero-Adán, Eduardo C. author Zonta, Cristiano author Licini, Giulia author Kleij, Arjan W. 2019-05-22T13:03:17Z2024-04-23T10:40:42Z 2019-05-22T13:03:17Z2024-04-23T10:40:42Z 2017-02-16 http://hdl.handle.net/2072/356047 https://doi.org/10.1021/acscatal.7b00109 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 phenolateO 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. eng L'accés als continguts d'aquest document queda condicionat a l'acceptació de les condicions d'ús establertes per la següent llicència Creative Commons:http://creativecommons.org/licenses/by-nc-nd/4.0/ Vanadium(V) Catalysts with High Activity for the Coupling of Epoxides and CO2: Characterization of a Putative Catalytic Intermediate info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion URL https://recercat.cat/bitstream/2072/356047/5/ACS%20Catal.%202017%2c%207%2c%202367-2373%20%28KLEIJ%29.pdf File MD5 4abae4b8fd1ba7bb92e81a784157442f 1620369 application/pdf ACS Catal. 2017, 7, 2367-2373 (KLEIJ).pdf URL https://recercat.cat/bitstream/2072/356047/1/ACS%20Catal.%202017%2c%207%2c%202367-2373%20%28KLEIJ%29.pdf.txt File MD5 aa9a88e4e41048d5f1a9eee37d2ae27c 39446 text/plain ACS Catal. 2017, 7, 2367-2373 (KLEIJ).pdf.txt