Synthesis and applications of chiral phosphite ligands derived from incompletely condensed silsesquioxane backbones |
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| Authors: | Gabriela Ionescu Jarl Ivar van der Vlugt Hendrikus CL Abbenhuis Dieter Vogt |
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| Institution: | Schuit Institute of Catalysis, Laboratory of Homogeneous Catalysis, Eindhoven University of Technology, PO Box 513, 5600 MB Eindhoven, The Netherlands |
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| Abstract: | The synthesis of novel chiral tri- and bidentate phosphites 2, 5, 6 and 8, derived from incompletely condensed silsesquioxane backbones and binaphthol, is described. These compounds can be obtained in good yield and are characterized by multinuclear NMR spectroscopy, mass spectrometry and elemental analyses. The complexation with Rh(cod)2]BF4 has been studied for all bidentate ligands. These nanosized ligands have been applied in the rhodium-catalyzed asymmetric hydroformylation of vinyl acetate and in the rhodium-catalyzed hydrogenation of methyl-(Z)-2-acetamidocinnamate. |
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