Catalysis based on precious metals has reached an incredible level of sophistication and has found widespread use and application, both in academia and in industry. However, owing to the environmental impact, cost, and low abundance, catalysis based on inexpensive, abundant, and environmentally benign first‐row transition metals has become a valuable alternative to traditional reactions promoted by their less‐abundant counterparts. From economic and ecological perspectives, iron salts and iron metal complexes are highly promising candidates to replace costly and toxic metals. In recent years, iron complexes have been used to promote the formation of radicals. Photoredox chemistry is a valuable method for the generation of radical species under mild conditions, but it often relies on rare‐earth‐metal complexes. The employment of iron complexes for the generation of radicals is attractive for the development of sustainable, simple, and effective procedures. In this Focus Review, we highlight and summarize recent radical reactions promoted by iron complexes and their application in organic reactions.

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铁促进的自由基反应：现状与展望

基于贵金属的催化已经达到了令人难以置信的复杂水平，并且在学术界和工业界都得到了广泛的应用。然而，由于对环境的影响，成本和低丰度，基于廉价，丰富且对环境无害的第一行过渡金属的催化作用已成为由其相对不丰富的对应物所促进的传统反应的一种有价值的替代方法。从经济和生态的角度来看，铁盐和铁金属络合物是替代昂贵和有毒金属的有前途的候选物。近年来，铁络合物已用于促进自由基的形成。光氧化还原化学是在温和条件下产生自由基物种的一种有价值的方法，但它通常依赖于稀土金属络合物。使用铁配合物产生自由基对于开发可持续，简单和有效的程序具有吸引力。在本焦点回顾中，我们重点介绍和总结了铁络合物促进的近期自由基反应及其在有机反应中的应用。