Transition-metal-catalyzed decarbonylation via carbon–carbon bond cleavage is an essential synthetic methodology. Given the ubiquity of carbonyl compounds, the selective decarbonylative process offers a distinct synthetic strategy using carbonyl groups as “traceless handles”. This reaction has been significantly developed in recent years in many respects, including catalytic system development, mechanistic understanding, substrate scope, and application in the synthesis of complex functional molecules. Therefore, this review aims to summarize the recent progress on transition-metal-catalyzed decarbonylative process, from the discovery of new transformations to the understanding of reaction mechanisms, to reveal the great achievements and potentials in this field. The contents of this review are categorized by the type of chemical bond cleavage in the decarbonylative process. The main challenges and opportunities of the decarbonylative process are also examined with the goal of expanding the application range of decarbonylation reactions.

中文翻译：

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通过过渡金属催化的碳-碳键裂解进行选择性脱羰。

通过碳-碳键裂解的过渡金属催化脱羰作用是必不可少的合成方法。考虑到羰基化合物的普遍性，选择性脱羰工艺提供了一种独特的合成方法，即使用羰基作为“无痕手柄”。近年来，该反应已在许多方面得到了显着发展，包括催化体系的发展，机理的理解，底物范围以及在复杂功能分子的合成中的应用。因此，本综述旨在总结过渡金属催化脱羰过程的最新进展，从发现新的转化形式到对反应机理的理解，以揭示该领域的巨大成就和潜力。这篇综述的内容按脱羰过程中化学键裂解的类型分类。为了扩大脱羰反应的应用范围，还研究了脱羰方法的主要挑战和机遇。