title: Elongated and substituted triazine-based tricarboxylic acid linkers for MOFs.
abstract: New triazine-based tricarboxylic acid linkers were prepared as elongated relatives of triazinetribenzoic acid (TATB). Additionally, functional groups (NO2, NH2, OMe, OH) were introduced for potential post-synthetic modification (PSM) of MOFs. Functionalized tris(4-bromoaryl)triazine "cores" (3a,3b) were obtained by unsymmetric trimerization mixing one equivalent of an acid chloride (OMe or NO2substituted) with two equivalents of an unsubstituted nitrile. Triple Suzuki coupling of the cores3with suitable phenyl- and biphenylboronic acid derivatives provided elongated tricarboxylic acid linkers as carboxylic acids17and20or their esters16and19. Reduction of the nitro group and cleavage of the methoxy group gave the respective amino and hydroxy-substituted triazine linkers.
authors.affiliation: Otto-Diels-Institut für Organische Chemie, Christian-Albrechts-Universität zu Kiel, Olshausenstr. 40, D-24098 Kiel, Germany.
authors.forename: Arne
authors.initials: A
authors.lastname: Klinkebiel
authors.affiliation: Otto-Diels-Institut für Organische Chemie, Christian-Albrechts-Universität zu Kiel, Olshausenstr. 40, D-24098 Kiel, Germany.
authors.forename: Ole
authors.initials: O
authors.lastname: Beyer
authors.affiliation: Otto-Diels-Institut für Organische Chemie, Christian-Albrechts-Universität zu Kiel, Olshausenstr. 40, D-24098 Kiel, Germany.
authors.forename: Barbara
authors.initials: B
authors.lastname: Malawko
authors.affiliation: Otto-Diels-Institut für Organische Chemie, Christian-Albrechts-Universität zu Kiel, Olshausenstr. 40, D-24098 Kiel, Germany.
authors.forename: Ulrich
authors.initials: U
authors.lastname: Lüning
keywords: MOF; Suzuki coupling; isoreticular; linker; triazine