Practical manganese-catalysed highly enantioselective cis-dihydroxylation of electron-deficient alkenes and detection of a cis-dioxomanganese(V) intermediate by high resolution ESI-MS analysis |
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| Authors: | Chow Toby Wai-Shan Liu Yungen Che Chi-Ming |
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| Institution: | Department of Chemistry, State Key Laboratory on Synthetic Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, China. |
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| Abstract: | A practical protocol has been developed for asymmetric cis-dihydroxylation of electron-deficient alkenes with Oxone catalysed by a manganese complex bearing a chiral tetradentate N(4)-donor ligand affording cis-diols in up to 95% yield with up to 96% ee. Analysis of the reaction mixture by high resolution ESI-MS revealed the formation of a cis-dioxomanganese(V) intermediate. |
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