Reichle Alexander, Reiser Oliver
Institute of Organic Chemistry, University of Regensburg 93053 Regensburg Germany
Chem Sci. 2023 Apr 6;14(17):4449-4462. doi: 10.1039/d3sc00388d. eCollection 2023 May 3.
Over the past decade, photocatalysis has developed into a powerful strategy for the selective functionalization of molecules through radical intermediates. Besides the well-established iridium- or ruthenium-based photocatalysts, which ideally fulfill the requirements for a photocatalyst, such as long excited-state lifetimes and photostability, the shift towards earth-abundant metal-based photocatalysts has so far been less explored. The concept of light-induced homolysis (LIH) for generating radicals has recently gained significant interest as a new platform for inducing photoreactions with earth-abundant 3d-metal complexes despite only having excited-state lifetimes in the low nanosecond range or even below. Cu(ii)-complexes play a prominent role in exploiting this concept, which will be discussed by showcasing recent developments in organic synthesis with a view to identifying the future prospects of this growing field.
在过去十年中，光催化已发展成为一种通过自由基中间体对分子进行选择性官能化的强大策略。除了成熟的铱基或钌基光催化剂，它们理想地满足了光催化剂的要求，如长激发态寿命和光稳定性外，向储量丰富的金属基光催化剂的转变目前探索较少。尽管光诱导均裂（LIH）产生自由基的概念目前激发态寿命仅在低纳秒范围内甚至更低，但作为一种利用储量丰富的3d金属配合物诱导光反应的新平台，最近已引起了人们极大的兴趣。Cu（II）配合物在利用这一概念方面发挥了重要作用，本文将通过展示有机合成的最新进展来讨论这一点，以期确定这一不断发展的领域的未来前景。
