Publications – João Costa Pessoa - 2011
نویسندگان
چکیده
An account of recent research of the groups of Costa Pessoa and Maurya is presented, focusing on the preparation of several polystyrene anchored complexes and their use as catalysts in functionalization of alkenes. The procedures for covalently binding the ligands or ligand precursors are outlined, as well as for coordination of the metal ions. Instrumental techniques used for the characterization of the polymer-bound complexes were highlighted. The heterogenized complexes were used as catalysts for the functionalization of alkenes, namely for oxidative aminations, hydroaminations and several types of oxidations, and results obtained using the catalysts prepared are presented. The main advantages of the use of the prepared supported catalyst are specified, namely their recyclability and their higher activity, also confirmed in many cases by comparison with their homogeneous counterparts. An account of the success in the use of EPR to characterize the VOand Cu-systems is also given.
منابع مشابه
Publications – João Costa Pessoa - 2008
Short Abstract 3-Formylsalicylic acid (Hfsal) covalently bound to chloromethylated polystyrene (PS) cross-linked with 5% divinylbenzene reacts with DL-alanine and L-isoleucine to give the Schiff-base tridentate ligands PS-H2fsal-DL-Ala and PS-H2fsal-L-isoleu, respectively. These anchored ligands on reaction with VOSO4 and Cu(CH3COO)2.H2O form complexes PS-[VO(fsal-DL-Ala)(H2O)], PS-[Cu(fsal-DLA...
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