Photocatalytic\nMulticomponent Carboxylation of Olefins\nand Sulfinate Salts with <sup>13</sup>CO<sub>2</sub>

Herein, we describe a photoinduced multicomponent catalytic\ncarboxylation\nprotocol that streamlines the access to <sup>13</sup>C-labeled carboxylic\nacids from simple olefin precursors, sulfinate salts and <sup>13</sup>CO<sub>2</sub>. Site selectivity is dictated by the radical philicity\nof the starting precursors and reaction intermediates, resulting in\neither a four-component or a five-component endeavor. The method is\ncharacterized by its simplicity and flexibility across a wide number\nof coupling counterparts