Copper Catalyst Activation Driven by Photoinduced Electron;;Transfers A Prototype Photolatent Click Catalyst

摘要

The development of catalysts with light-controlled activity is a challenging area of current research, with a strong potential for development. Considering transition metal catalysts, the generation of a highly active catalytic species on demand by light irradiation of an inactive precatalyst presents several key benefits: 1) metal species that are stable for handling under ambient conditions; 2) switching on catalysis at a given time and place; 3) tuning the onset of the generated active catalyst by controlling the photoactivation process, which would be valuable for highly exothermic reactions conducted on a large scale. To date, most examples of photocontrolled transition metal catalysts are the so-called photocaged catalysts, which rely on the photodissociation or photodecomposition of ligands in coordinatively saturated metal complexes to generate vacant active sites.