Now showing items 1-15 of 15

    • Aryloxide-promoted catalyst turnover in Lewis base organocatalysis 

      Hartley, Will C.; O'Riordan, Timothy J. C.; Smith, Andrew D. (2017-08) - Journal item
      This short review highlights select examples of enantioselective Lewis base promoted reactions that use tertiary amine (cinchona alkaloids, isothioureas and DMAP/PPY derivatives) or NHC catalysts and employ aryloxide ...
    • Inner-sphere versus outer-sphere coordination of BF4- in a NHC-gold(I) complex 

      Veenboer, Richard M. P.; Collado, Alba; Dupuy, Stephanie; Lebl, Tomas; Falivene, Laura; Cavallo, Luigi; Cordes, David B.; Slawin, Alexandra M. Z.; Cazin, Catherine S. J.; Nolan, Steven P. (2017-08-14) - Journal article
      The role of counterions in chemistry mediated by gold complexes stretches much further than merely providing charge balance to cationic gold species. Interplay between their basicities and coordination strengths influences ...
    • Insights into the catalytic activity of [Pd(NHC)(cin)Cl] (NHC = IPr, IPrCl, IPrBr) complexes in the Suzuki-Miyaura reaction 

      Izquierdo, Frederic; Zinser, Caroline; Minenkov, Yury; Cordes, David; Slawin, Alexandra; Cavallo, Luigi; Nahra, Fady; Cazin, Catherine; Nolan, Steven Patrick (2018-02-07) - Journal article
      The influence of C4,5-halogenation on palladium N-heterocyclic carbene complexes and their activity in the Suzuki-Miyaura reaction have been investigated. Two [Pd(NHC)(cin)Cl] complexes bearing IPrCl and IPrBr ligands were ...
    • Mechanistic studies of azolium ions and their role in organocatalysis 

      Collett, Christopher J. (University of St Andrews, 2013) - Thesis
      This thesis describes our physical organic and mechanistic investigations into N Heterocyclic Carbene (NHC) mediated organocatalytic transformations, through a collaboration with the research group of Dr AnnMarie O’Donoghue ...
    • A novel route for large-scale synthesis of [Au(NHC)(OH)] complexes 

      Nahra, F.; Patrick, S.R.; Collado-Martinez, Alba; Nolan, S.P. (2014-12-14) - Journal article
      A novel route for the large-scale synthesis of [Au(NHC)(OH)] complexes is reported. Using this new methodology, several [Au(NHC)(OH)] complexes were readily and efficiently accessed on multi-gram scale (up to 20 g).
    • Palladium-catalyzed α-arylation of arylketones at low catalyst loadings 

      Marelli, Enrico; Corpet, Martin Michel Alfred Eton; Davies, Sian; Nolan, Steven Patrick (2014-12-22) - Journal article
      A general catalytic protocol for the a-arylation of aryl ketones has been developed. It involves the use of a preformed, bench-stable Pd–N-heterocyclic carbene precatalyst bearing IHept as an ancillary ligand, and allows ...
    • [Pd(NHC)(PR3)] complexes : versatile tools for tandem dehydrogenation-hydrogenation processes 

      Songis, Olivier; Cazin, Catherine S.J. (2013-09-17) - Journal article
      Homogeneous Pd(0) complexes are powerful tools for numerous catalytic reactions. Recent work has demonstrated the unique properties displayed by [Pd(NHC)(PR3)] catalysts in the activation of ammonia borane (AB) and formic ...
    • Polymer precursors from catalytic reactions of natural oils 

      Furst, Marc R. L. (University of St Andrews, 2013-06-26) - Thesis
      The bidentate ligand 1,2-bis(ditertbutylphosphinomethyl)benzene has been shown to be a very efficient catalyst for operating the alkoxycarbonylation of alkenes and unsaturated esters and carboxylic acids giving a very ...
    • Rate and equilibrium constants for the addition of N-Heterocyclic Carbenes into benzaldehydes : a remarkable 2-substituent effect 

      Collett, Christopher John; Massey, Richard S; Taylor, James Edward; Maguire, Oliver R; O'Donoghue, AnnMarie C; Smith, Andrew David (2015-06) - Journal article
      Rate and equilibrium constants for the reaction between N-aryl triazolium NHC precatalysts and substituted benzaldehyde derivatives to form 3-(hydroxybenzyl)azolium adducts under both catalytic and stoichiometric conditions ...
    • The Suzuki-Miyaura reaction performed using a palladium-N-Heterocyclic carbene catalyst and a weak inorganic base 

      Izquierdo, Frederic; Corpet, Martin Michel Alfred Eton; Nolan, Steven Patrick (2015) - Journal article
      N-Heterocyclic carbenes (NHCs) have been shown to be useful ligands for the Suzuki-Miyaura cross-coupling at low catalyst loadings. We now report that the commercially available and air-stable [Pd(IPr)(cin)Cl] pre-catalyst ...
    • Synergism between N-heterocyclic carbene and phosphorus-based ligands in ruthenium and palladium catalytic systems 

      Schmid, Thibault E. (University of St Andrews, 2012-12-18) - Thesis
      N-heterocyclic carbenes (NHCs) have become a very popular class of ligands, which has found uses in numerous catalytic applications. The use of such compounds in combination with phosphorus-based ligands within metal ...
    • Synthesis and reactivity of novel (NHC)gold(I) complexes 

      Patrick, Scott R. (University of St Andrews, 2014-12-01) - Thesis
      The fields of N-heterocyclic carbenes and homogeneous gold catalysis have experienced tremendous growth within the last two decades. In addition, the combination of these fields to give NHC-gold complexes has delivered ...
    • Synthesis and reactivity studies of mono- and diaurated species bearing N-heterocyclic carbene ligands 

      Gómez Suárez, Adrián (University of St Andrews, 2014-12-01) - Thesis
      The use of Au-NHC complexes in homogenous gold catalysis has become very popular during the last 10 years. The work described in this thesis represents a modest contribution towards a better understanding of the reactivity ...
    • Synthesis, study and application of NHC-gold(I) complexes 

      Veenboer, Richard M. P. (University of St Andrews, 2017-12-07) - Thesis
      The development of procedures for the synthesis of valuable organic molecules constitutes an important part of chemistry. The goal of improving the efficiency of existing methodologies can be fulfilled by use of metal ...
    • Transition metal bifluorides 

      Nahra, Fady; Brill, Marcel; Gomez Herrera, Alberto; Cazin, Catherine S.J.; Nolan, Steven Patrick (2016-01-15) - Journal article
      Since its initial discovery, four decades ago, transition metal bifluoride chemistry has exhibited a slow growth, mainly due to problems associated with synthesis and characterization. Until recently, reports on this ...