Combined Power of Organo- and Transition Metal Catalysis in Organic Synthesis

The combination of organocatalysis with transition metal catalysis is an emerging research area for the scientific community. Various unprecedented transformations that are otherwise inaccessible by individual catalytic systems can be achieved with good efficiency and stereocontrolled manner by this dual-catalytic strategy. This Review presents a detailed discussion on the recent advances in dual catalytic systems combining organocatalysis and transition metal catalysis, covering the literature of the last five years. A wide variety of combinations of transition metals with organocatalysts including aminocatalysts, such as secondary amines and more recent primary amines, Bronsted acid catalysts, especially phosphoric acids based on the chiral BINOL scaffold and N-heterocyclic carbene catalysts, are discussed. Considering the great contribution of this domain to organic synthesis, the present and future potential of this new and exciting research field is highlighted.