Global ETD Search
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Showing 1 to 16 of 16 for “"Aryl-amines"”.
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Dual c–h functionalization of n-aryl amines & development of novel hydrogen bonding catalysts
… with its application in synthesis of polycyclic amines. This reaction features dual C–H activation, which in addition to α-functionalization of C(sp3)–H bonds of amines, simultaneously results in the functionalization of an ortho C(sp2)–H bond of the aryl ring. A classical Povarov approach to …
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Synthesis of N-Heterocycles and Thiocines via Electrophilic Divalent Reactive Intermediates
… Driver group. My research has focused on using aryl amines and azides as the N-atom source to synthesize these complex organic scaffolds that possess biological activity such as dibenzazepines, benzimidazoles, and 3H-indoles by accessing electrophilic divalent intermediates. I found that …
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Investigation of the Steric and Electronic Properties of 3-Iminophosphine Ligands in Chelated Palladium Allyl Complexes for Use in the Regioselective Hydroamination of Allenes
… hydroamination of 3-methyl-1,2-butadiene with aryl amines to form solely the kinetic product at room temperature was studied by observing conversion to products via NMR spectroscopy. An understanding of the importance of these 3-iminophosphine ligand features guides the rational design of …
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Synthesis and study of ligands for Pd-catalyzed C-O and C-N coupling
… containing these ligands, electron-neutral aryl bromides were coupled with phenols at room temperature for the first time. A variety of electron-deficient aryl halides and phenols were also coupled at moderate temperatures in good yields. In order to probe how the structural features of the …
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Applications for imidazophenanthridine-based heterocycles
… syntheses developed were applied to a range of aryl amines and more elaborate substrates, such as bifunctional aminoquinolinium cations and amino functionalised polyoxometalates (POMs). 1,2,3,12b-tetrahydroimidazo[1,2-f]phenanthridines (TIPs), an intermediate in the 3-step cascade synthesis of …
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Synthesis and characterization of novel macromolecules/networks via side chain modifications of amorphous poly(arylene ethers)
… by chemical modification of amorphous poly(arylene ethers) with pendant amines were investigated. A new monomer, 3-aminophenyl-bis(4-fluoro phenyl)phosphine oxide was prepared by nitration and reduction of bis(4-fluoro phenyl)phenylphosphine oxide. Statistical incorporation of pendant aryl …
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Synthesis, morphologies and applications of polyoxometalate-containing diblock copolymers
… the phthalimide protecting groups to regenerate aryl amines, POM clusters were finally linked to the coil block of all diblock copolymers to yield the targeted hybrid diblock copolymers. The covalent cluster attachment was confirmed by UV-Vis spectroscopy, FTIR and cyclovoltammetry measurements. …
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Design and synthesis of polymeric semiconductors for perovskite applications
… amination protocol using primary aryl amines and aryl dihalides afforded highly reproducible, high yielding family of polymers, which could be purified by a simple sequence of precipitations. Appropriate selection of pendant functional groups, such as electron donating methoxy, or …
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A Study of Novel Nitrogen-Containing Quinoidal Electrolytes for Redox Flow Batteries
… an investigation of quinones functionalised with aryl amines. 2,5-bis(4-carboxyanilino)-benzo-1,4-quinone was found to be the most promising example, retaining its electrochemical activity after reacting with hydroxide ions, the resultant molecule showing greater stability and reacting at a lower …
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Development of new transition metal catalysts for C-N bond formation and continuous flow processes for C-F bond formation
… a new process to enable the rapid preparation of aryl fluorides via the Balz-Schiemann reaction is explored. Chapter 1. Development of an Air-Stable Nickel Precatalyst for the Amination of Aryl Chlorides, Sulfamates, Mesylates, and Triflates. A new air-stable nickel precatalyst for C-N …
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I. Palladium-catalyzed anti-Markovnikov oxidative amination of olefins II. Catalytic deracemization of axially chiral diols III. Three component carboamination of electron deficient alkenes
… group can be varied greatly, including aryl, alkoxy, amide, and imide groups. The mechanism of the reaction has been studied extensively, and it was shown that the use of an in situ generated palladate catalyst proved essential to achieve the unusual regioselectivity observed compared to …
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Amidate complexes of the group 4 metals : sythesis, reactivity, and hydroamination catalysis
… C=C coupling to generate an enediamido complex (aryl isocyanides), or rearrange to generate a bis(amidate) bis(vinylamido) complex (alkyl isocyanides). Benzyl abstraction to generate cationic Zr bis(amidate) benzyl complexes is also possible through reaction with [Ph₃C][B(C₆F₅)4] or B(C₆F₅)₃ …