Transition Metal‐Catalyzed CH Carboxylation/Carbonylation of (Hetero)arenes with CO 2

Abstract Although carbon dioxide (CO 2 ) is known as the primary greenhouse gas, it is also considered by chemists as the ideal one‐carbon (C1) feedstock for producing valuable fine chemicals due to its abundant, inexpensive, nontoxic, and renewable properties. Nevertheless, the use of CO 2 in transition metal‐catalyzed CH carboxylation of arenes is a double challenge due to the inertness of both CO 2 and aryl CH bond. Herein, important achievements until September of 2021 in the field of transition metal‐catalyzed CH carboxylation of (hetero)arenes with CO 2 will be briefly discussed.