Journal article

1,2,3-triazolylidenes as versatile abnormal carbene ligands for late transition metals

  • Mathew, Paulson Department of Chemistry, University of Fribourg, Switzerland
  • Neels, Antonia Centre Suisse d’Electronique et de Microtechnique, Neuchâtel, Switzerland
  • Albrecht, Martin Department of Chemistry, University of Fribourg, Switzerland
Published in:
  • Journal of the American Chemical Society. - 2008, vol. 130, no. 41, p. 13534–13535
English The [3 + 2] cycloaddition of azides and acetylenes followed by nitrogen quaternization was applied for the generation of novel and highly modular triazolium salts. The selective substitution of the 1,3,4-substitution pattern presets such salts as precursors for a new class of abnormal carbene ligands, thus expanding the family of these high-impact ligands. Metalation of the triazolium salts is highly versatile and is illustrated by direct C−H bond activation as well as by applying a transmetalation protocol, thus providing access to Pd(II), Ru(II), Rh(I), and Ir(I) abnormal carbene complexes. The donor properties of these carbenes were analyzed by using Tolman electronic parameters and were found to be slightly stronger than those the most basic normal carbenes.
Faculté des sciences et de médecine
Département de Chimie
  • English
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