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Showing 1 to 13 of 13 for “"Pd-catalysis"”.
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Palladium-catalyzed C-C, C-N and C-O bond formation
New methods for Pd-catalyzed cross-coupling reactions of aryl halides or arenesulfonates are described. Key to the success of these transformations is the proper choice of ligand and reaction conditions. Palladium catalysts supported by bulky, monodentate phosphine ligands with a biaryl backbone or …
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Development of Copper(I) Hydride-Catalyzed Asymmetric Olefin Hydrofunctionalization Reactions
… of alkenes enable by dual CuH and Pd catalysis.
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Development of Stereoselective Hydrofunctionalization Reactions Enabled by Dual Copper (I) Hydride and Palladium Catalysis
… particularly those which rely on dual CuH- and Pd-catalysis. Chapter one offers a synopsis on the history of CuH catalysis and the seminal discoveries in dual CuH- and Pd-catalyzed reactions. Chapter two describes the CuH-catalyzed C2-allylation of benzimidazoles. Chapter three details the …
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Exploration of mild and selective hydrozirconation reactions facilitated by zirconocene hydride catalysts generated in Situ.
… using first-row and early transition metal catalysis. Analogously, the use of zirconium is appealing because it is earth-abundant, has low associated toxicity, and is often is less costly than late transition metals. We sought to (i) develop reaction conditions that facilitate the conversion …
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APPLY LADDER OF CHEMICAL CIRCULARITY: RECYCLING OF RARE EARTH ELEMENTS RECOVERED FROM ELETRONIC WASTE AS A CATALYST IN ORGANIC REACTION.
… copper catalysts in asymmetric and homogeneous catalysis, with a specific focus on continuous flow chemistry. The research extensively examines the Michael addition reaction between indoles and benzylidene malonates, employing these catalysts to achieve high reaction efficiency and selectivity. …
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Coordination chemistry of unusual oxidation states of nickel and palladium relevant to homogeneous catalysis
… transition metals – nickel (Ni) and palladium (Pd) hold privileged positions in the realm of metal-mediated catalysis. Transition metal complexes containing these metals are some of the most active catalysts that have been developed for important areas including, but not limited to, …
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Mild and Convenient Methods to Prepare N-Alkyl Tacrines
… Upon exploring the alternatives, N-arylation by Pd-catalysis seemed to be the most mild and convenient alternative over the standard SNAr procedures.
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Development of new transition metal-catalyzed carbon-fluorine, carbon-nitrogen, and carbon-carbon bond forming processes
… of regiochemical fidelity has been achieved by Pd-catalysis employing a new biarylphosphine ligand and TESCF₃ as a crucial additive. Five, six, and seven-membered vinyl triflate substrates, as well as a few acyclic substrates undergo the transformation successfully. The intriguing "TESCF₃ …
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Part I: Palladium PEPPSI-IPENT CI, A Useful Catalyst for Challenging Amination Reactions Part II: Generation Of Benzynes in Flow Reactors followed by Subsequent Diels-Alder Reactions
… Buchwald Hartwig amination reactions using Pd-NHC pre-catalysts. Specifically, we focused on: a) coupling of sterically hindered primary and secondary amines and b) coupling of 2-aminopyridine derivatives with aryl and heteroaryl halides. Although several approaches have been developed and …
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Understanding Structure-Property Relationships for Palladium-Gold Nanoparticles as Colloidal Catalysts
Bimetallic palladium-gold (PdAu) nanoparticle (NP) catalysts have been demonstrated for the better catalytic performance than monometallic Pd catalysts in various reactions; however, the enhancement mechanism is not completely clear for most reactions. This thesis addresses the investigation of …
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Palladium and manganese catalysis in C-H activation
… of dibenzofurans via transition metal-mediated catalysis suffer from a number of drawbacks. Thus, focus was targeted at addressing many of the limitations existing with the current protocols for the intramolecular direct arylation of diarylethers. Substrates with electron withdrawing groups were …
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Mechanism and application of Lewis and Brønsted acid effects in organotransition metal catalysis
… described here address concepts in homogeneous catalysis and organometallic chemistry, with a focus on method development for catalytic reaction applications in organic synthesis. The unifying theme throughout the research is the development of rational design principles for cooperative …
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Ligand Manipulation and Reactivity Studies of Organometallic High Valent Palladium Complexes
<p>Catalysis involving high-valent Pd(III) and Pd(IV) complexes has recently shown important applications in the development of new chemical transformations that compliments conventional Pd<super>0/II</super> catalysis.</p><p>However, the Pd(III) or Pd(IV) intermediates cannot be …