Chelated ruthenium catalysts for Z-selective olefin metathesis.
نویسندگان
چکیده
We report the development of ruthenium-based metathesis catalysts with chelating N-heterocyclic carbene (NHC) ligands that catalyze highly Z-selective olefin metathesis. A very simple and convenient procedure for the synthesis of such catalysts has been developed. Intramolecular C-H bond activation of the NHC ligand, promoted by anion ligand substitution, forms the appropriate chelate for stereocontrolled olefin metathesis.
منابع مشابه
Alkene chemoselectivity in ruthenium-catalyzed Z-selective olefin metathesis.
Chelated ruthenium catalysts have achieved highly chemoselective olefin metathesis reactions. Terminal and internal Z olefins were selectively reacted in the presence of internal E olefins. Products were produced in good yield and high stereoselectivity for formation of a new Z olefin. No products of metathesis with the internal E olefin were observed. Chemoselectivity for terminal olefins was ...
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ورودعنوان ژورنال:
- Journal of the American Chemical Society
دوره 133 22 شماره
صفحات -
تاریخ انتشار 2011