Cationic ruthenium(II) complexes supported on mesoporous silica as catalyst precursors in the selective oxidative cleavage of 1-octene
作者:Hendrik Kotzé、Selwyn Mapolie
DOI:10.1002/aoc.3643
日期:2017.7
The selectiveoxidative cleavage of 1‐octene to heptanal and heptanoic acid is reported. A range of model and silica‐immobilized ruthenium(II) systems were evaluated. The MCM‐41 and SBA‐15 immobilized systems were found to show superior activity when compared to their homogeneous counterparts and were found to exert control over the selective formation of aldehydes or carboxylic acids. This could be
Iron oxide produced by iron-oxidizing bacteria, Leptothrix ochracea, (biogenous iron oxide: BID) was used as a support for immobilized palladium catalysts with organic cross-linkers. Palladium immobilized on BIO bearing imidazolium chloride delivered the desired biaryl products in sufficient yields in the Suzuki-Miyaura coupling reactions under solvent-free conditions and could be reused several times without significant loss of catalytic activity. It is shown that BIO can be exploited as a useful support for immobilization of palladium and the BIO-immobilized palladium catalyst effectively promotes the solvent-free Suzuki-Miyaura coupling reactions. (C) 2011 Elsevier Ltd. All rights reserved.