Construction of a visible light-driven hydrocarboxylation cycle of alkenes by the combined use of Rh(i) and photoredox catalysts

A visible light-driven catalytic cycle for hydrocarboxylation of alkenes with CO₂ was established using a combination of a Rh(i) complex as a carboxylation catalyst and [Ru(bpy)₃]²⁺ (bpy = 2,2′-bipyridyl) as a photoredox catalyst.