Sulfoxonium ylides are carbene precursors and safer alternatives for highly reactive and unstable diazo compounds, and they are used extensively in the field of C-H activation. The current review is a collection of recent advancements in transition-metal-catalyzed C(sp²)-H activation using sulfoxonium ylides as precursors. The review emphasizes the use of sulfoxonium ylides as coupling partners for acylmethylation of arenes and heteroarenes. Also, it accounts for the construction of heterocycles employing sulfoxonium ylide as a coupling partner with non-innocent directing groups by C-H activation, acylmethylation followed by intramolecular cyclization in one pot or domino fashion. The review also highlights recent advances in C-H activation reactions using sulfoxonium ylide as a carbenoid-based directing group to construct carbocyclic rings. The review focuses on using sulfoxonium ylide as a coupling partner and directing group, followed by the mode of transformation, scope of the reaction, and the possible mechanistic aspect.

Sulfoxonium ylides 是卡宾前体和高反应性和不稳定重氮化合物的更安全替代品，它们广泛用于 CH 活化领域。目前的综述是过渡金属催化 C(sp ²)-H 活化使用 sulfoxonium 叶立德作为前体。该综述强调了使用亚砜叶立德作为芳烃和杂芳烃酰基甲基化的偶联伙伴。此外，它还解释了使用 sulfoxonium ylide 作为偶联伙伴与非无辜导向基团通过 CH 活化、酰基甲基化和分子内环化以一锅或多米诺方式构建杂环的原因。该评论还重点介绍了 CH 活化反应的最新进展，该反应使用亚砜叶立德作为基于类胡萝卜素的导向基团来构建碳环。综述的重点是使用 sulfoxonium ylide 作为偶联伙伴和导向基团，其次是转化模式、反应范围和可能的机理方面。