Abstract
Metal catecholate frameworks, based on 2,3,6,7,10,11-hexahydroxytriphenylene and bivalent metal ions (Ni2+, Cu2+, Zn2+, Mg2+, Ca2+, Sr2+ and Ba2+) were synthesized, characterized with powder X-ray diffraction and N2 physisorption, and evaluated as catalysts in Knoevenagel condensation and Michael addition reactions. The large number of catecholate oxygen atoms in these materials resulted in a high catalytic activity which was shown to be a function of both the porosity of the material and the electronegativity of the metal ion.
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Acknowledgments
The authors are grateful to the Belgian Federal Government for support in the IAP project 07/05 Functional Supramolecular Systems, to K. U. Leuven for the Methusalem CASAS grant, and to FWO Vlaanderen for research project funding G.0453.09 and G.0486.12. P.V. is grateful for a fellowship from FWO Vlaanderen.
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Valvekens, P., Stalpaert, M., De Winter, G. et al. Metal-Catecholate Frameworks as Solid Basic Catalysts. Top Catal 59, 1757–1764 (2016). https://doi.org/10.1007/s11244-016-0697-5
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DOI: https://doi.org/10.1007/s11244-016-0697-5