Activation of Small Molecules at N-Heterocyclic Carbene Centers

Abstract

The transition-metal-like behavior of N-heterocyclic carbenes (NHCs) in the activation of small molecules such as CO, NO, N₂O, H₂, and NH₃ is reviewed. The resemblance to transition metals is mainly attributed to the adjustable electronic properties of the carbene centers through modification of their structure. Furthermore, applications of NHCs in the activation of various C–H bonds for functionalization are explored.

Key words

N-heterocyclic carbine - main-group chemistry - small-molecule activation - radical chemistry - C–H bond activation

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