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Back Cover: Metal-Organic Framework Supported Copper Photoredox Catalysts for Iminyl Radical-Mediated Reactions (Angew. Chem. Int. Ed. 21/2023) |
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| Authors: | Dr Ben Ma Qi Xia Deyang Wang Dr Ji-Kang Jin Zekun Li Qiu-Jiang Liang Meng-Ying Sun Dongyi Liu Li-Juan Liu Dr Hui-Xing Shu Prof Dr Jun Yang Prof Dr Dan Li Prof Dr Jian He |
| Institution: | 1. Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, P. R. China
State Key Laboratory of Synthetic Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, P. R. China These authors contributed equally to this work.;2. Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, P. R. China These authors contributed equally to this work.;3. Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, P. R. China College of Chemistry and Materials Science, Guangdong Provincial Key Laboratory of Functional Supramolecular Coordination Materials and Applications, Jinan University, Guangzhou, 510632 P. R. China These authors contributed equally to this work.;4. Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, P. R. China;5. College of Chemistry and Materials Science, Guangdong Provincial Key Laboratory of Functional Supramolecular Coordination Materials and Applications, Jinan University, Guangzhou, 510632 P. R. China |
| Abstract: | Visible-light copper photocatalysis has recently emerged as a viable technology for building sustainable synthetic processes. To broaden the applications of phosphine-ligated copper(I) complexes, we describe herein an effective metal-organic framework (MOF)-supported copper(I) photocatalyst for multiple iminyl radical-mediated reactions. Due to site isolation, the heterogenized copper photosensitizer has a significantly higher catalytic activity than its homogeneous counterpart. Using a hydroxamic acid linker to immobilize copper species on MOF supports affords the heterogeneous catalysts with high recyclability. The post-synthetic modification sequence on MOF surfaces allows for the preparation of previously unavailable monomeric copper species. Our findings highlight the potential of using MOF-based heterogeneous catalytic systems to address fundamental challenges in the development of synthetic methodologies and mechanistic investigations of transition-metal photoredox catalysis. |
| Keywords: | Copper Photosensitizers Hydroxamic Acids Metal-Organic Frameworks Photoredox Catalysis Post-Synthetic Modification |