An enantiomerically pure adamantylimido molybdenum alkylidene complex. An effective new catalyst for enantioselective olefin metathesis |
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Authors: | Tsang W C Peter Jernelius Jesper A Cortez G A Weatherhead Gabriel S Schrock Richard R Hoveyda Amir H |
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Affiliation: | Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, MA 02467, USA. |
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Abstract: | An enantiomerically pure Mo-based complex that bears an alkylimido ligand is prepared and characterized through NMR spectroscopy and X-ray analysis. Mo complex 4 is the only reported chiral alkylimido catalyst; all previous chiral complexes are arylimido systems. These studies show that the chiral Mo catalyst exists exclusively as the syn isomer and that it offers unique reactivity and selectivity profiles in asymmetric olefin metathesis. |
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