Metal‐Organic Framework Supported Copper Photoredox Catalysts for Iminyl Radical‐Mediated Reactions

作者：Ben Ma, Qi Xia, Deyang Wang, Ji‐Kang Jin, Zekun Li, Qiujiang Liang, Mengying Sun, Dongyi Liu, Lijuan Liu, Hui‐Xing Shu, Jun Yang, Dan Li, Jian He · 发表于：Angewandte Chemie International Edition · 年份：2023 · DOI：10.1002/anie.202300233 · 被引用次数：46 · 研究领域：Metal-Organic Frameworks: Synthesis and Applications、Sulfur-Based Synthesis Techniques、Advanced Photocatalysis Techniques

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.