Ball-Milling-Enabled Reactivity of Manganese Metal*
| Autor: | Emma Richards, Louis C. Morrill, Duncan L. Browne, William I. Nicholson, Alex C. Seastram, Giuseppina Magri, Robert R. A. Bolt, Adam Khan, Joseph Howard |
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| Rok vydání: | 2021 |
| Předmět: |
Radical trapping
chemistry.chemical_element Manganese electron paramagnetic spectroscopy Catalysis law.invention Metal law reductive coupling Reactivity (chemistry) Electron paramagnetic resonance Ball mill Mechanochemistry Chemistry Communication food and beverages General Chemistry General Medicine Combinatorial chemistry Communications Reagent visual_art visual_art.visual_art_medium manganese ball milling organometallics |
| Zdroj: | Angewandte Chemie (International Ed. in English) |
| ISSN: | 1521-3773 1433-7851 |
| Popis: | Efforts to generate organomanganese reagents under ball‐milling conditions have led to the serendipitous discovery that manganese metal can mediate the reductive dimerization of arylidene malonates. The newly uncovered process has been optimized and its mechanism explored using CV measurements, radical trapping experiments, EPR spectroscopy, and solution control reactions. This unique reactivity can also be translated to solution whereupon pre‐milling of the manganese is required. A manganese‐mediated reductive dimerization of arylidene malonates by ball milling is reported. The process has been optimised and its mechanism explored by CV measurements, radical trapping, and EPR spectroscopy. Control experiments identify the action of ball milling rather than mortar and pestle is necessary to realise the effective activation of manganese, which can then be used in either solution or a ball mill for subsequent reactions. |
| Databáze: | OpenAIRE |
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