Introducing axial chirality into mesoionic 4,4'-bis(1,2,3-triazole) dicarbenes

Org Lett. 2012 Apr 6;14(7):1866-8. doi: 10.1021/ol3004657. Epub 2012 Mar 20.

Abstract

Mesoionic 4,4'-bis(1,2,3-triazole-5,5'-diylidene) Rh(I) complexes having a C2 chiral 4,4'-axis were accessed from 3-alkyltriazolium salts in virtually complete de. Their structure and configurational integrity were assessed by NMR spectroscopy, X-ray crystallography, and chiral HPLC. Computational analysis of the MICs involved in the reaction suggested the formation of a highly stable and unprecedented cation-carbene intermediate species, which could be evidenced experimentally by cyclic voltammetry analysis.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Chromatography, High Pressure Liquid
  • Crystallography, X-Ray
  • Magnetic Resonance Spectroscopy
  • Methane / analogs & derivatives*
  • Methane / chemical synthesis
  • Methane / chemistry
  • Models, Molecular
  • Molecular Structure
  • Triazoles / chemical synthesis*
  • Triazoles / chemistry

Substances

  • Triazoles
  • carbene
  • Methane