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Design And Construction Of Functional Metal-Metalloporphyrin Frameworks, Le Meng
Design And Construction Of Functional Metal-Metalloporphyrin Frameworks, Le Meng
USF Tampa Graduate Theses and Dissertations
Porous metal-organic frameworks are a new type of functional materials with potential applications for gas storage, gas separation, catalysis, biomedical and chemical sensors. This thesis describes several porous metal-metalloporphyrin frameworks (MMPFs), which were synthesized with a series of transition metals and 5,15-bis(3,5-dicarboxyphenyl)-10,20-bis(2,6-dibromophenyl)porphine. Among these MMPFs, the cobalt MMPF (CoBrPTC) has a fcu structure, which represents the first porphyrin-based MOF with this topology. CoBrPTC was evaluated as heterogeneous catalyst and demonstrated interesting catalytic performances.
Asymmetric Intra- And Intermolecular Cyclopropanation By Co(Ii)- Based Metalloradical Catalysis, Xue Xu
Asymmetric Intra- And Intermolecular Cyclopropanation By Co(Ii)- Based Metalloradical Catalysis, Xue Xu
USF Tampa Graduate Theses and Dissertations
Metal-catalyzed cyclopropanation of olefins with diazo reagents has attracted research interest because of its fundamental and practical importance. The resulting cyclopropyl units are recurrent motifs in biologically important molecules and can serve as versatile precursors in organic synthesis. Since they were first introduced in 2004, Co(II) complexes of D2-symmetric chiral amidoporphyrins [Co(D2-Por*)] have emerged as a new class of catalysts for asymmetric cyclopropanation. These metalloradical catalysts have been shown to be highly effective for asymmetric intermolecular cyclopropanation of a broad scope of substrates with different classes of carbene sources, particularly including electron-deficient olefins and acceptor/acceptor-substituted …