This Account is dedicated to Professor Masahiro Murakami’s excellent contributions to science.
Abstract
Dual light-excited ketone/transition-metal catalysis is a rapidly developing field of photochemistry. It allows for versatile functionalizations of C–H or C–X bonds enabled by triplet ketone acting as a hydrogen-atom-abstracting agent, a single-electron acceptor, or a photosensitizer. This review summarizes recent developments of synthetically useful transformations promoted by the synergy between triplet ketone and transition-metal catalysis.
1 Introduction
2 Triplet Ketone Catalysis via Hydrogen Atom Transfer
2.1 Triplet Ketones with Nickel Catalysis
2.2 Triplet Ketones with Copper Catalysis
2.3 Triplet Ketones with Other Transition-Metal Catalysis
3 Triplet Ketone Catalysis via Single-Electron Transfer
4 Triplet Ketone Catalysis via Energy Transfer
5 Conclusions
Key words
dual catalysis - triplet ketone - transition-metal catalysis - photocatalysis - photosensitizer - C–H functionalization