Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 7 of 7 for “"Pybox"”.
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Lanthanide luminescence in Pybox functionalized metallopolymers
… antennas. It was shown that the incorporation of Pybox-derivatives into polymers results in luminescent solids with high quantum efficiencies. Two Pybox monomers were synthesized and studied in detail. These monomers were copolymerized with three co-monomers through either radical polymerization …
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Síntesis de Complejos de cobre(I) con ligandos pybox . Aplicaciones en catálisis asimétrica
… de complejos de cobre(I) con ligandos pybox enantiopuros, así como algunas de sus aplicaciones en procesos de catálisis asimétrica. En el Capítulo 1 se presenta la síntesis de complejos de cobre(I) con ligandos R-pybox (R = iPr, Ph, iPr-pybox-diPh) a partir de distintos precursores …
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Complejos de cobre(I) y osmio(II) con ligandos N-dadores bi- y tridentados: síntesis y aplicaciones en catálisis asimétrica
… y de osmio(II) con ligandos tipo phebox y pybox enantiopuros de simetría C2 y las primeras aplicaciones en la reacción de transferencia asimétrica de hidrógeno a cetonas de los nuevos derivados de osmio(II)-pybox sintetizados. En el Capítulo 1 se describe la síntesis de los primeros …
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Alkyl-heteroatom Bond Forming Reactions from the Late Transition Metals
… 9 and 10 metals bound by the pincer ligands Pybox and PCP, respectively, were initially investigated. Evidence suggests the Ir-Et complex ([(dmPybox)Ir(Et)(OAc)][PF6] (12)) undergoes a β-H deprotonation, similar to an E2 type elimination in organic chemistry, rather than the desired SN2 …
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Nickel-catalyzed asymmetric cross-couplings of secondary allylic chlorides and planar-chiral compounds in asymmetric synthesis
… bond-forming reactions are described. A nickel/Pybox system effectively catalyzes regio- and enantioselective cross-couplings between racemic secondary allylic chlorides and readily available alkylzinc halides. This method is applied to generate two stereo centers in a formal total synthesis of …
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Nickel-catalyzed asymmetric arylations of [alpha]-halocarbonyl compounds and studies of boratabenzene-containing transition metal complexes
… arylation of a-bromoketones using a nickel/pybox catalyst. The third section details the development of a Suzuki arylation of a-bromo- and a-chloroamides using aryl-(9-BBN) reagents. Both of these cross-coupling procedures are stereoconvergent, as they convert the racemic starting …
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Iron catalyzed C-H activation and synthesis of novel ligands
… styrene. After ligand screening, an (S,S)-i-Pr-pybox ligand was discovered to be an efficient ligand, affording (R)-phenylaziridine in 83% yield with 40% ee. Also, aziridinations using in situ generated iminophenyliodinanes using 10-20 mol% of iron(II) triflate and a combination of the …