Recent advances in formal C(sp²)–H functionalization of aldehyde‐derived N,N‐dialkylhydrazones (substitution at the azomethine carbon atom) are highlighted, with a focus on radical‐mediated processes that open up new opportunities for C–C bond formation, such as alkylation reactions with the aid of hypervalent iodonium reagents or polyhaloalkanes, as well as for carbon–heteroatom bond formation (C–N, C–P). Cascade sequences based on these reactions, and leading to (hetero)cyclic frameworks, are also discussed.

中文翻译：

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醛衍生的N，N-二烷基hydr的自由基介导的形式C（sp ²）–H官能化

着重介绍了醛衍生的N，N-二烷基hydr（在偶氮甲碱碳原子上的取代）的正式C（sp ²）-H官能化的最新进展，重点是自由基介导的过程，这些过程为C-C键打开了新的机遇。形成，例如借助高价碘鎓试剂或多卤代烷烃进行的烷基化反应，以及碳-杂原子键的形成（C–N，C–P）。还讨论了基于这些反应并导致（杂环）环构架的级联序列。