Switchable Site-Selective Catalytic Carboxylation of Allylic Alcohols with CO2

A switchable site-selective catalytic carboxylation of allylic alcohols has been developed in which CO2 is used with dual roles, both facilitating C­–OH cleavage and as C1 source. This protocol is characterized by its mild conditions, absence of stoichiometric organometallic reagents, broad scope and exquisite regiodivergency that can be modulated by the ligand employed.