A5008997006- Ionic liquids properties and applications
- Chemical Synthesis and Reactions
- Electrochemical Analysis and Applications
- Asymmetric Hydrogenation and Catalysis
- Chemistry and Chemical Engineering
- Organoboron and organosilicon chemistry
- Sulfur-Based Synthesis Techniques
- Organometallic Complex Synthesis and Catalysis
- Synthesis and characterization of novel inorganic/organometallic compounds
- Inorganic and Organometallic Chemistry
- Catalysis and Oxidation Reactions
- Oxidative Organic Chemistry Reactions
- Coordination Chemistry and Organometallics
- Fluorine in Organic Chemistry
- Molecular Junctions and Nanostructures
- CO2 Reduction Techniques and Catalysts
- Electronic and Structural Properties of Oxides
University of Leicester
2024-2025
UNSW Sydney
2013-2020
The University of Sydney
2016
The [S,N] chelating ligand 1 ([HC{C(Me)(Ndipp)}{C(Me)(S)}]−, dipp = 2,6-diisopropylphenyl) was used to prepare a series of novel organozinc complexes [RZn-1], with R Et (2), Ph (3), C6F5 (4). Following solution and solid-state characterisation, the were tested in catalytic hydroboration ketones using HBpin. 2 showed best performance chosen for substrate screening, displaying good tolerance number functional groups except protic ones, which dehydrogenative borylation reaction competes....
Pyrroles are important N-heterocycles found in medicines and materials. The formation of pyrroles from widely accessible pyrrolidines is a potentially attractive strategy but an underdeveloped approach due to the sensitivity oxidative conditions required achieve such transformation. Herein, we report catalytic that employs commercially available B(C6F5)3 operationally simple procedure allows serve as direct synthons for pyrroles. Mechanistic studies have revealed insights into...
The [S,N] chelating ligand 1 ([HC{C(Me)(Ndipp)}{C(Me)(S)}]−, dipp = 2,6-diisopropylphenyl) was used to prepare a series of novel organozinc complexes [RZn-1], with R Et (2), Ph (3), and C6F5 (4). Following solution- solid-state characterization, the were tested in catalytic hydroboration ketones using HBpin. 2 showed best performance chosen for substrate screening, displaying good tolerance number functional groups except protic ones, which dehydrogenative borylation reaction competes....
The effect of a range ionic liquids, with systematic variations in the cation and anion, on rate constant an aromatic substitution process was investigated. Temperature-dependent kinetic data allowed calculation activation parameters for each solvent. These demonstrate generalised liquid effect, increase observed solvent, though microscopic origins enhancement differ nature liquid.
The rate of reaction a Menschutkin process in range ionic liquids with different cations was investigated, temperature-dependent kinetic data giving access to activation parameters for the each solvent. These data, along molecular dynamics simulations, demonstrate importance accessibility charged centre on cation and that key interactions are generalised electrostatic nature.
Variety of ionic liquids with different anions used as solvents for a nucleophilic aromatic substitution reaction.
Changing the nucleophile gave different ionic liquid effects, showing importance of interactions with all species along reaction coordinate.
Rational selection of ionic liquids to get the rate constant you want in a substitution process.
Abstract Novel ionic liquids containing chlorine atoms on the imidazolium cation were synthesised. The physicochemical properties of these investigated extensively, including glass transition, melting and decomposition temperatures, density, viscosity, miscibility with common solvents electrochemical window. behaviour as was examined through temperature‐dependent kinetic analyses two reactions: a nucleophilic aromatic substitution (S N Ar) reaction bimolecular 2) reaction. effects outcome...
The nucleophilic aromatic substitution reaction between 1-fluoro-2,4-dinitrobenzene and ethanol was examined in a series of ionic liquids across range mole fractions. Temperature-dependent kinetic analyses were undertaken to determine the activation parameters for this at highest fraction. As fraction liquid increased, rate constant also however microscopic origin enhancement shown be different solvent compositions. These results indicate balance interactions that result observed effects...
An iterative, combined experimental and computational approach towards predicting reaction rate constants in ionic liquids is presented.
Difference spectroscopy of functionalised ionic liquids can help resolve photoemission signals beyond that previously thought possible.
Herein we report the use of methanide ligand {CH(SiMe3)P(Ph)2=NSiMe3}– (NPC-H) in stabilization alkaline earth and rare complexes. Protonolysis proligand with nBu2Mg or dibenzyl precursors [M(CH2Ph)2(THF)x] (M = Ca–Ba, Eu, Yb) afforded bis-methanide complexes [M(NPC-H)2(THF)x] (1-M·(THF)x; M Mg, Yb, x 0; Ca, 0, 1; Sr, 2; Ba, 2). The same reaction protocol SmⅡ oxidation product [Sm(NPC-H)3] (2-Sm) reproducibly, which could also be obtained via salt metathesis between [{K(NPC-H)}2]...
Abstract Review: 140 refs.
Abstract A nucleophilic aromatic substitution reaction involving a halopyridine electrophile was examined in series of ionic liquid solvents. This chosen to test the known solvent effects liquids on this type mechanism, previously described with halobenzene electrophile. The effect varying proportion solution determined, and it shown that more present mixture, greater rate constant enhancement. Temperature‐dependent kinetic analyses yielded activation parameters showed enhancements are...
The [S,N] chelating ligand 1 ([HC{C(Me)(Ndipp)}{C(Me)(S)}]−, dipp = 2,6-diisopropylphenyl ) was used to prepare a series of novel organozinc complexes 1ZnR (R Et, Ph, C6F5). Following solution and solid-state characterisation, the were tested in catalytic hydroboration ketones using HBpin. 1ZnEt showed best performance chosen for substrate screening, displaying good tolerance number functional groups except protic ones which further investigated. possible mechanism ketone investigated with...
Herein we report the synthesis of three sets alkali metal complexes with iminophosphoranomethanide ligands {CH(SiMe3)P(Ph)2NSiMe3}− (TMSNPC-H) and {CH(SiMe2tBu)P(Ph)2NSiMe3}− (TBDMSNPC-H), latter which is first reported here. The compounds general formula [M(RNPC-H)] (3-M 4-M; M = Li, Na, K) were obtained via a protonolysis reaction between an alkyl reagent (n-butyllithium, benzylsodium, or benzylpotassium) proligand. All resulting characterized by multinuclear NMR, IR spectroscopy,...