Plausible Rh(V) Intermediates in Catalytic C–H Activation Reactions

Catalysis by defined transition-metal complexes has captivated the attention of the scientific community over the last decades. The well-documented utility of Rh(III) complexes in C – H activation reactions have enabled the development of a plethora of new catalytic methods. High-valent transition-metal species in C – H activation reactions were first predicted in palladium-based transformations. From those early studies, it was apparent that differences in reactivity and selectivity could be expected. By analogy, higher valent Rh(V) complexes could represent a new approach in C – H activation reactions and offer different opportunities to improve and broaden the current state-of-the-art in the field.