The present review highlights the most important recent contributions toward the synthesis of functionalized fused heteroaromatic rings via intramolecular C–H activation mediated or catalyzed by transition metals. This type of reaction constitutes a versatile strategy to obtain a great variety of fused heterocyclic systems through the formation of carbon–carbon (C–C) and C–heteroatom bonds from direct coupling between two adjacent C–H bonds or C–H/H–X bonds. The revision is focused on the synthesis of fused heterocycles through two chemical processes: (1) metal-catalyzed intramolecular oxidative C–H activation, and (2) intramolecular C–H activation mediated by metallic Lewis acids.

本综述着重介绍了最近通过过渡金属介导或催化的分子内C–H活化合成功能化稠合杂芳环的最重要贡献。这种类型的反应构成了一种通用的策略，即通过两个相邻的C–H键或C–H / H之间的直接偶合形成碳-碳（C–C）和C–杂原子键来获得各种各样的稠合杂环系统–X键。该修订版着重于通过两个化学过程合成稠合杂环：（1）金属催化的分子内氧化C–H活化，以及（2）金属路易斯酸介导的分子内的C–H活化。