While aiming at sustainable organic synthesis, over the last decade particular attention has been focused on two modern fields, C–H bond activation, and visible-light-induced photocatalysis. Couplings through C–H bond activation involve the use of non-prefunctionalized substrates that are directly converted into more complex molecules, without the need of a previous functionalization, thus considerably reduce waste generation and a number of synthetic steps. In parallel, transformations involving photoredox catalysis promote radical reactions in the absence of radical initiators. They are conducted under particularly mild conditions while using the visible light as a cheap and economic energy source. In this way, these strategies follow the requirements of environment-friendly chemistry. Regarding intrinsic advantages as well as the complementary mode of action of the two catalytic transformations previously introduced, their merging in a synergistic dual catalytic system is extremely appealing. In that perspective, the scope of this review aims to present innovative reactions combining C–H activation and visible-light induced photocatalysis.

中文翻译：

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当金属催化的CH官能化遇到可见光光催化时。

在致力于可持续的有机合成的同时，在过去的十年中，人们特别关注了两个现代领域：CH键的活化和可见光诱导的光催化。通过C–H键活化的偶联涉及使用非预官能化的底物，这些底物可直接转化为更复杂的分子，而无需先前的功能化，因此可大大减少废物的产生和许多合成步骤。同时，在没有自由基引发剂的情况下，涉及光氧化还原催化作用的转化会促进自由基反应。它们在特别温和的条件下进行，同时将可见光用作廉价和经济的能源。这样，这些策略就符合环境友好化学的要求。考虑到先前引入的两个催化转化的内在优势以及互补的作用方式，它们在协同双催化体系中的融合是非常有吸引力的。从这个角度来看，本综述的范围旨在提出结合C–H活化和可见光诱导的光催化的创新反应。