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Substituted 1,3,5-Triazine Hexacarboxylates as Potential Linkers for MOFs
Arne Klinkebiel1, Ole Beyer2, Ulrich Lüning3
1Otto-Diels-Institut für Organische Chemie der Christian-Albrechts-Universität zu Kiel, D-24098 Kiel, Germany. aklinkebiel@oc.uni-kiel.de.
Abstract:
Hexacarboxylates are promising linkers for MOFs such as NU-109 or NU-110, which possess large values for surfaces and pore volumina. Starting from 2,4,6-tris(bromoaryl)-1,3,5-triazines, palladium-catalyzed cross coupling reactions (Suzuki-Miyaura, Sonogashira-Hagihara) form elongated hexacarboxylate linkers. Eight new 2,4,6-tris(biphenyl) and 2,4,6-tris(phenylethynylphenyl) 1,3,5-triazines have been prepared in quantities ranging from 40 mg to 1.1 g. In five cases, one of the arms of the linker carries an additional functionality (NO2 or OMe).
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