Transition‐Metal‐Catalyzed Synthesis of Hydroxylated Arenes

An overview of the recent bibliography in the transition-metal-catalyzed hydroxylation of aryl derivatives is presented. Two reaction protocols are considered: 1) C--H activation/hydroxylation and, 2) cross-coupling hydroxylation of aryl halides. The achievements and limitations for both procedures are described taking into consideration different metal catalyst/oxidant combinations.