N-heterocyclic carbenes (NHCs), with their strong σ-donor ability, have structural diversity by tuning the electronic or steric properties of the nitrogen substituents. So they are recognized one of the most powerful ligand classes in transition-metal catalysis. Among the NHCs, mesoionic carbenes (MICs) have no neutral resonance form, and the electron-donating power can be further enhanced by reducing the number of heteroatoms stabilizing the carbene carbon than Arduengo-type normal imidazolylidenes. The backbone triazol rings can be easily accessed through [3+2] cycloaddition of alkynes and azides, so many researchers have developed the MICs-complexes. However, despite significant progress there are few reports regarding the synthesis of chiral triazolylidene-matal complex.<br/>Herein, we focused on planar chiral ferrocenes with large and rigid chiral environment. Based on this ligand design, we develop new chiral triazolylidene-metal complexes. In 2018, we reported ferrocene-based planar chiral triazolylidene-paradium complexes exhibited good enantioselectivity for the asymmetric Suzuki-Miyaura cross coupling reaction.<br/> To expand the generality of triazolylidenes with planar chiral ferrocene, we synthesized a variety of chiral triazolylidene-metal complexes and investigated on the catalytic activity.<br/>

Synthesis of a variety of chiral triazolylidene-metal complexes and investigatement on the catalytic activity

Macromolecular Chemistry: The Second Century

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ACS Spring 2020 National Meeting & Expo

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.