Photocatalytic Multicomponent Carboxylation of Olefins and Sulfinate Salts with 13CO2

Herein, we describe a photoinduced multicomponent catalytic carboxylation protocol that streamlines the access to 13C-labeled carboxylic acids from simple olefin precursors, sulfinate salts and 13CO2. Site selectivity is dictated by the radical philicity of the starting precursors and reaction intermediates, resulting in either a four-component or a five-component endeavor. The method is characterized by its simplicity and flexibility across a wide number of coupling counterparts