Communication

Cationic Gallium(III) Halide Complexes: A New Generation of π-Lewis Acids

  1. Shun Tang,
  2. Dr. Julien Monot,
  3. Ahmad El-Hellani,
  4. Bastien Michelet,
  5. Dr. Régis Guillot,
  6. Dr. Christophe Bour,
  7. Prof. Dr. Vincent Gandon*

Article first published online: 1 JUN 2012

DOI: 10.1002/chem.201201202

Issue

Chemistry - A European Journal

Chemistry - A European Journal

Special Issue: Conference Issue: 4th European Chemistry Congress, Prague

Volume 18, Issue 33, pages 10239–10243, August 13, 2012

Additional Information

How to Cite

Tang, S., Monot, J., El-Hellani, A., Michelet, B., Guillot, R., Bour, C. and Gandon, V. (2012), Cationic Gallium(III) Halide Complexes: A New Generation of π-Lewis Acids. Chem. Eur. J., 18: 10239–10243. doi: 10.1002/chem.201201202

Author Information

  1. ICMMO, UMR CNRS 8182, Université Paris-Sud, 91405 Orsay (France), Fax: (+) +331694747

*ICMMO, UMR CNRS 8182, Université Paris-Sud, 91405 Orsay (France), Fax: (+) +331694747

Publication History

  1. Issue published online: 3 AUG 2012
  2. Article first published online: 1 JUN 2012
  3. Manuscript Received: 9 APR 2012

Funded by

  • CNRS
  • MESR
  • UPS

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Keywords:

  • cycloisomerization;
  • gallium;
  • heterocyclic carbenes;
  • homogeneous catalysis;
  • Lewis acids
Thumbnail image of graphical abstract

Ga-neration X: Well-defined neutral and cationic gallium(III) halide complexes have been synthesized and evaluated in catalysis. Both the (NHC)GaX3/AgSbF6 catalytic mixture and isolated (NHC)GaX2+ species function as exquisite π-Lewis acids in typical GaX3-catalyzed reactions (see scheme). The cationic complexes are more active than GaX3 and yet more resistant to hydrolysis, which allows lower catalytic loadings and faster reactions.

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