Cyclometallation of arylimines and nitrogen-containing heterocycles via room-temperature C-H bond activation with arene ruthenium(ii) acetate complexes |
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| Authors: | Bin Li Thierry Roisnel Christophe Darcel Pierre H Dixneuf |
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| Institution: | Institut des Sciences Chimiques de Rennes, UMR 6226 CNRS - Université de Rennes 1, Centre of Catalysis and Green Chemistry, Campus de Beaulieu, 35042 Rennes, France. pierre.dixneuf@univ-rennes1.fr christophe.darcel@univ-rennes1.fr. |
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| Abstract: | The reaction of RuCl(2)(p-cymene)](2) with arylimines and 4 equiv. of KOAc in methanol at room temperature produces stable (N^C)-cyclometallated ruthenium(ii) complexes via C-H bond activation/deprotonation. This method can be applied also to nitrogen-containing molecules: N-phenylpyrazole, 2-phenyl-2-oxazoline and benzoh]quinoline. N-Phenyl-pyrazole, RuCl(2)(p-cymene)](2) and diphenylacetylene directly lead to alkyne insertion into the metallacycle C-Ru bond. |
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