Protonolysis of a ruthenium-carbene bond and applications in olefin metathesis.

نویسندگان

  • Benjamin K Keitz
  • Jean Bouffard
  • Guy Bertrand
  • Robert H Grubbs
چکیده

The synthesis of a ruthenium complex containing an N-heterocylic carbene (NHC) and a mesoionic carbene (MIC) is described wherein addition of a Brønsted acid results in protonolysis of the Ru-MIC bond to generate an extremely active metathesis catalyst. Mechanistic studies implicated a rate-determining protonation step in the generation of the metathesis-active species. The activity of the NHC/MIC catalyst was found to exceed those of current commercial ruthenium catalysts.

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عنوان ژورنال:
  • Journal of the American Chemical Society

دوره 133 22  شماره 

صفحات  -

تاریخ انتشار 2011