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Fully Borylated Methane and Ethane by Ruthenium‐Mediated Cleavage and Coupling of CO
Authors:Dr Andrei S Batsanov  Prof?Dr Javier A Cabeza  Dr Marco G Crestani  Dr Manuel R Fructos  Dr Pablo García‐Álvarez  Dr Marie Gille  Prof Zhenyang Lin  Prof?Dr Todd B Marder
Institution:1. Department of Chemistry, Durham University, Durham, UK;2. Departamento de Química Orgánica e Inorgánica-IUQOEM, Centro de Innovación en Química Avanzada (ORFEO-CINQA), Universidad de Oviedo-CSIC, Oviedo, Spain;3. The Hong Kong University of Science and Technology, Hong Kong, P.R. China;4. Institut für Anorganische Chemie, Julius-Maximilians-Universit?t Würzburg, Würzburg, Germany
Abstract:Many transition‐metal complexes and some metal‐free compounds are able to bind carbon monoxide, a molecule which has the strongest chemical bond in nature. However, very few of them have been shown to induce the cleavage of its C?O bond and even fewer are those that are able to transform CO into organic reagents with potential in organic synthesis. This work shows that bis(pinacolato)diboron, B2pin2, reacts with ruthenium carbonyl to give metallic complexes containing borylmethylidyne (CBpin) and diborylethyne (pinBC≡CBpin) ligands and also metal‐free perborylated C1 and C2 products, such as C(Bpin)4 and C2(Bpin)6, respectively, which have great potential as building blocks for Suzuki–Miyaura cross‐coupling and other reactions. The use of 13CO‐enriched ruthenium carbonyl has demonstrated that the boron‐bound carbon atoms of all of these reaction products arise from CO ligands.
Keywords:boron  borylation  carbon monoxide  cluster compounds  ruthenium
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