While N-heterocyclic carbenes (NHCs) have played an important role as Lewis-base organocatalysts and developed recently into a full chapter of this exciting area of organocatalysis, NHC-catalyzed single-electron-transfer (SET) processes are still challenging and underdeveloped. Recently, NHC catalysis has been successfully combined with photoredox catalysis for SET reactions and this turned out to be a promising strategy. This article focuses on the recent advances of the combination of photoredox catalysis with NHC catalysis.

中文翻译：

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双N-杂环卡宾/光催化：自由基过程的新策略

尽管N-杂环卡宾（NHC）作为路易斯基有机催化剂发挥了重要作用，并在最近发展成为这一令人激动的有机催化领域的一整章，但NHC催化的单电子转移（SET）工艺仍然具有挑战性，并且开发不足。最近，NHC催化已经成功地与光氧化还原催化结合用于SET反应，这被证明是一种有前途的策略。本文重点介绍了光氧化还原催化与NHC催化相结合的最新进展。