The Transient Directing Group Strategy: A New Trend in Transition-Metal-Catalyzed C–H Bond Functionalization

Abstract

In recent years, the C–H bond activation field has known very fast expansion offering valuable synthetic tools. Consequently, the quest for new approaches to afford atom- and step-economical processes has driven the scientific community to imagine original strategies. In this context, the direct functionalization of substrates by a transition-metal-catalyzed C–H bond activation using a transient directing group has emerged as a promising approach. This short review focuses on the major progress made in this field to provide to the reader an overview of the recent advances.1 Introduction2 From a Historical Point of View3 Functionalization of Carbonyl Derivatives4 Functionalization of Amines Derivatives5 Summary and Outlook