Hypervalent Iodine Reagents Enable Chemoselective Deboronative/Decarboxylative Alkenylation by Photoredox Catalysis.

A photoinduced chemoselective C(sp3)—C(sp2) coupling reaction through a deboronation of trifluoroborates and decarboxylation of α,β-unsaturated carboxylic acids is developed using a hypervalent benziodoxolone as reagent.