Protonolysis of a ruthenium-carbene bond and applications in olefin metathesis.
نویسندگان
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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ورودعنوان ژورنال:
- Journal of the American Chemical Society
دوره 133 22 شماره
صفحات -
تاریخ انتشار 2011