Recent Advances in Copper‐Catalyzed Carboxylation Reactions with CO2

Abstract As an ideal one‐carbon synthon, CO2 has been successfully utilized in diverse carboxylation reactions to construct a series of value‐added products. Among various transition‐metal catalysts, the inexpensive copper complexes exhibit unique catalytic activity in carboxylation reactions. This review summarizes the recent developments in copper‐catalyzed carboxylation reactions with CO2, the contents of which are divided into five parts based on the type of the substrates or products: organic halides and their surrogates, C−C double bonds, C−C triple bonds, C−H bonds and the synthesis of heterocycles.