| Autor: |
Lemmens V; Centre For Membrane Separations, Adsorption, Catalysis, and Spectroscopy for Sustainable Solutions (cMACs), KU Leuven, Leuven 3001, Belgium., Vos C; Centre For Membrane Separations, Adsorption, Catalysis, and Spectroscopy for Sustainable Solutions (cMACs), KU Leuven, Leuven 3001, Belgium., Bugaev AL; The Smart Materials Research Institute, Southern Federal University, Rostov-on-Don 344090, Russia., Vercammen J; Centre For Membrane Separations, Adsorption, Catalysis, and Spectroscopy for Sustainable Solutions (cMACs), KU Leuven, Leuven 3001, Belgium., Van Velthoven N; Centre For Membrane Separations, Adsorption, Catalysis, and Spectroscopy for Sustainable Solutions (cMACs), KU Leuven, Leuven 3001, Belgium., Gascon J; King Abdullah University of Science and Technology (KAUST), Thuwal 23955, Saudi Arabia., De Vos DE; Centre For Membrane Separations, Adsorption, Catalysis, and Spectroscopy for Sustainable Solutions (cMACs), KU Leuven, Leuven 3001, Belgium. |
| Abstrakt: |
Trifluoromethyl (CF 3 ) 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) 3 2+ 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. |
