Publications de Andrew Douglas Phillips

Base-Free Transfer Hydrogenation with an Ionic-Liquid-Supported Ruthenium eta(6)-Arene Bis(pyrazolyl)methane Catalyst

Francisco Sepulveda, Paul Joseph Dyson, Andrew Douglas Phillips

Ruthenium complexes of the type [RuCl(eta(6)-arene)-(NN)]X (X = BF4 or BPh4) featuring an eta(6)-arene ligand modified with an imidazolium ring and incorporating the bis(azo) chelating (NN) ligands 2-hydroxyphenylbis(3,5-dimethylpyrazol-1-yl) methane or 2- ...

Wiley-Blackwell2017

Synthesis, Characterization, and Reactivity of the First Osmium beta-Diketiminato Complexes and Application in Catalysis

Rosario Scopelliti, Paul Joseph Dyson, Dominique Schreiber, Andrew Douglas Phillips

The strongly chelating anionic beta-diketiminate ligand has been employed to formulate complexes involving almost every metal of the periodic table; however, the heavier metals of the d block remain relatively unexplored. This paper describes the synthesis ...

Amer Chemical Soc2013

Modulating the Steric, Electronic, and Catalytic Properties of Cp* Ruthenium Half-Sandwich Complexes with β-Diketiminato Ligands

Kay Severin, Rosario Scopelliti, Paul Joseph Dyson, Dominique Schreiber, Katrin Anne Thommes, Andrew Douglas Phillips

Five different types of β-diketiminate ligands, bearing electron-donating to strongly electron-withdrawing substituents, were synthesized and used in the synthesis of Cp* ruthenium complexes (Cp* = η5-C5Me5). One series consists of complexes with a covalen ...

American Chemical Society2011

Polynuclear Ruthenium, Osmium and Gold Complexes. The Quest for Innovative Anticancer Chemotherapeutics

Andrew Douglas Phillips, Christian Hartinger, Alexey Nazarov

Polynuclear compounds are a relatively new and successful approach in metal-based cancer chemotherapy as typified by the trinuclear Pt compound BBR3464 which was evaluated in clinical trials. In this review, we discuss newer developments of polynuclear rut ...

2011

Experimental and theoretical studies on the mechanism of hydrogenation by η6-arene β-diketiminato -ruthenium and -osmium complexes

Paul Joseph Dyson, Dominique Schreiber, Andrew Douglas Phillips

The β-diketiminate class of ligands is renowned for the stabilization of coordinatively unsatd. main-group and transition metal complexes. Moreover, the application and scope of transition metal β-diketiminate complexes in the catalytic transformation of o ...

2010

Rational Design of Highly Cytotoxic η6-Arene β-Diketiminato-Ruthenium Complexes

Rosario Scopelliti, Paul Joseph Dyson, Andrew Douglas Phillips, Alexey Nazarov, Olivier Pierre Zava

A series of ruthenium-benzene complexes with β-diketiminate ligands modified with electron-withdrawing groups were prepd. and characterized by NMR spectroscopy, mass spectrometry, and single-crystal x-ray diffraction. The complexes are stable in air and un ...

American Chemical Society2010

Influence of Structural Variation on the Anticancer Activity of RAPTA-Type Complexes: ptn versus pta

Paul Joseph Dyson, Andrew Douglas Phillips, Anna Katherine Renfrew, Christian Hartinger, Alexey Nazarov

[M(η6-arene)(ptn)Cl]X (M = Ru, Os; arene = p-cymene, benzene, toluene, hexamethylbenzene; ptn = 3,7-dimethyl-7-phospha-1,3,5-triazabicyclo[3.3.1]nonane; X = Cl-, BF4-) were prepd. and characterized spectroscopically. X-ray diffraction was addnl. used to ch ...

2009

A Crystallographic Story of Snakes and Ladders: Encapsulated Water Polymers and Rigid Metal Complexes Based on Mono-N-substituted Carboxylate 4,4'-Bipyridine

Rosario Scopelliti, Paul Joseph Dyson, Zhaofu Fei, Wee Han Ang, Andrew Douglas Phillips

A new zwitterionic bidentate ligand was synthesized incorporating a 4,4'-bipyridine core with a carboxylate group as a single building block, specifically designed for the rational construction of supramol. structures (metal-org. frameworks) that are capab ...

2009

Tuning the efficacy of ruthenium(II)-arene (RAPTA) antitumour compounds with fluorinated arene ligands

Rosario Scopelliti, Paul Joseph Dyson, Ursula Röthlisberger, Enrico Marko Tapavicza, Andrew Douglas Phillips, Anna Katherine Renfrew

A series of compounds of general formula [Ru(eta(6)-fluoroarene)(pta)Cl-2] (fluoroarene = C6H5F, C6H5CF3, and 1,4-C6H4CH3F; pta = 1,3,5-triaza-7-phosphatricyclo[3.3.1.1]decane) have been prepared and characterized spectroscopically. Additionally, X-ray dif ...

American Chemical Society2009

Influence of ion pairing on styrene hydrogenation using a cationic η6-arene β-diketiminato-ruthenium complex

Gabor Laurenczy, Paul Joseph Dyson, Andrew Douglas Phillips

A series of salts composed of the coordinatively unsatd. areneruthenium β-diketiminato cation and different anions, [(η6-C6H6)Ru(ArN:CMeCHCMe:NAr)][X] (1-4; Ar = 2,6-dimethylphenyl; X = OTf-, BF4-, PF6-, BPh4-) and [(η6-C6H6)Ru(ArN:CMeCHCMe:NAr)][BArF4] [5 ...

American Chemical Society2009

Suzuki Coupling Reactions in Ether-Functionalized Ionic Liquids: The Importance of Weakly Interacting Cations

Paul Joseph Dyson, Zhaofu Fei, Andrew Douglas Phillips, Christian Hartinger, Yuehui Li, Xuemei Yang

Imidazolium- and pyridinium-based ionic liqs. with ether/polyether substituents have been evaluated as solvents for palladium-catalyzed Suzuki C-C coupling reactions. In general, reactions proceed more efficiently in these solvents compared to other ionic ...

2008

Linked Metal-cluster Systems: Isolation and Characterization of {anti-[(p-cymene)RuCl]-m-[k 2-P,P';k 1-P''-(PPh2CH2)3CMe]-[AuPt3(CO)3(PCy3)3]}(PF6)2

Hisham Ben Hamidane, Zoltan Beni, Rosario Scopelliti, Paul Joseph Dyson, Andrew Douglas Phillips, Christian Hartinger

The new mixed-metal complex {anti-[(p-cymene)RuCl]-m-[k 2-P,P';k 1-P''-(PPh2CH2)3CMe]-[AuCl]}PF6 and its cluster deriv. {anti-[(p-cymene)RuCl]-m-[k 2-P,P';k 1-P''-(PPh2CH2)3CMe]-[AuPt3(CO)3(PCy3)3]}(PF6)2 have been prepd. and characterized. Notably, NMR sp ...

Springer US2008

(Pentamethylcyclopentadienyl)iridium-PTA (PTA = 1,3,5-Triaza-7-phosphaadamantane) Complexes and Their Application in Catalytic Water Phase Carbon Dioxide Hydrogenation

Gabor Laurenczy, Paul Joseph Dyson, Andrew Douglas Phillips

The water-soluble iridium(III) complexes [CpIr(PTA)Cl2] (1) and [CpIr(PTA)2Cl]Cl (2) (PTA = 1,3,5-triaza-7-phosphaadamantane) have been synthesised and characterised by spectroscopy and X-ray crystallography. The complexes were evaluated as catalyst prec ...

2008

Facile, thermo-reversible cycloaddition of small molecules to a ruthenium(II) arene-diketiminate

Gabor Laurenczy, Rosario Scopelliti, Paul Joseph Dyson, Andrew Douglas Phillips

Formation of a vacant coordination site on a Ru center permits an unusual binding of small molecules such as ethylene, acetylene, and dihydrogen, resulting in the transformation of the chelating β-diketiminate ligand to a β-diimine. These represe ...

2007

Development of Ruthenium Antitumor Drugs that Overcome Multidrug Resistance Mechanisms

Rosario Scopelliti, Paul Joseph Dyson, Claudine Scolaro, Wee Han Ang, Andrew Douglas Phillips, Gianni Sava

Organometallic ruthenium(II) complexes of the general formula [Ru(η6-p-cymene)Cl2(L)] and [Ru(η6-p-cymene)Cl(L)2][BPh4] with modified phenoxazine- and anthracene-based multidrug resistanc ...

2007

In Vitro Evaluation of Rhodium and Osmium RAPTA Analogues: The Case for Organometallic Anticancer Drugs Not Based on Ruthenium

Gabor Laurenczy, Paul Joseph Dyson, Antoine Dorcier, Wee Han Ang, Andrew Douglas Phillips

Reaction of the dimer [(η5-C5Me5)RhCl(μ2-Cl)]2 with 2 or 4 equiv of the water-soluble phosphine 1,3,5-triaza-7-phosphatricyclo[3.3.1.1]decane (pta) affords [Rh(η5-C5Me< ...

2006

Synthesis, Characterization, and in Vitro Evaluation of Novel Ruthenium(II) η6-Arene Imidazole Complexes

Rosario Scopelliti, Paul Joseph Dyson, Claudine Scolaro, Andrew Douglas Phillips, Gianni Sava

Ten complexes of general formula [Ru(η6-arene)Cl2(L)], [Ru(η6-arene)Cl(L)2][X], and [Ru(η6-arene)(L)3][X]2 (η6-arene = benzene, p-cymene; L = imidazole, ...

2006