Modular Approach to the Synthesis of Polydentate NHC-Ligand Precursors (Benzimidazolium Salts) Containing Axial Chiral 1,1′-Binaphthyl via Pd-Catalyzed N-Arylation of 1,2-Diaminobenzene

Abstract

A convenient and efficient modular approach to the synthesis of polydentate NHC ligand precursors (benzimidazolium salts) containing axial chiral 1,1′-binaphthyl from 1,2-diaminobenzene and BINOL has been developed. The benzimidazolium salts could be regarded as the potential bidentate, tridentate, and tetradentate NHC ligand precursors.

Key words

NHC - benzimidazolium salt - N-arylation - Pd-catalyzed

• References

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