Ru-Bipyridine Entrapped in the Supercages of EMC-1 Faujasite as Catalyst for the Trifluoromethylation of Arenes
Bugaev, Aram L.
Van Velthoven, Niels
De Vos, Dirk E.
KAUST DepartmentChemical Engineering Program
KAUST Catalysis Center (KCC)
Physical Science and Engineering (PSE) Division
KAUST Grant NumberOSR-2018-CRG7-3741.2
Embargo End Date2022-12-27
Permanent link to this recordhttp://hdl.handle.net/10754/675118
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AbstractTrifluoromethyl (CF3) groups are versatile structural motifs especially in the field of agrochemicals and pharmaceuticals. However, current trifluoromethylation reactions are generally associated with stoichiometric amounts of transition metals/metal oxidants, homogeneous catalysts, high temperatures, and expensive trifluoromethylating agents. In this work, the homogeneous photocatalyst Ru(bipy)32+ is entrapped in the pores of a faujasite support (EMC-1) via a "ship-in-a-bottle"strategy. The formation of the coordination compound was confirmed by Fourier transform infrared (FTIR), UV-Vis spectroscopy, and X-ray absorption spectroscopy (XAS). Due to its high stability toward acidified environments, this single-site heterogeneous catalyst is suitable for the trifluoromethylation of synthetically interesting (hetero)arenes under visible-light irradiation at room temperature. Furthermore, the heterogeneous catalyst could efficiently be reused for at least three times with minimal catalyst leaching/deactivation.
CitationLemmens, V., Vos, C., Bugaev, A. L., Vercammen, J., Van Velthoven, N., Gascon, J., & De Vos, D. E. (2021). Ru-Bipyridine Entrapped in the Supercages of EMC-1 Faujasite as Catalyst for the Trifluoromethylation of Arenes. ACS Applied Materials & Interfaces. doi:10.1021/acsami.1c19655
SponsorsThe research leading to these results has received funding from the KAUST-CRG Program (OSR-2018-CRG7-3741.2). J.V., N.V.V., and D.E.D.V. thank the FWO (Fonds, voor Wetenschappelijk Onderzoek, Flanders, Belgium) for SB funding (1S17620N, 1S32917N, and G0F2320N). The XAS experiments were performed on beamline BM23 at the European Synchrotron Radiation Facility (ESRF), Grenoble, France. A.L.B. acknowledges the Ministry of Science and Higher Education of the Russian Federation for financial support (075-15-2021-1363). V.L. is thanking Carlos Marquez for SEM and ICP-OES measurements.
PublisherAmerican Chemical Society (ACS)
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