1
|
Kenkel I, Franke A, Dürr M, Zahl A, Dücker-Benfer C, Langer J, Filipović MR, Yu M, Puchta R, Fiedler SR, Shores MP, Goldsmith CR, Ivanović-Burmazović I. Switching between Inner- and Outer-Sphere PCET Mechanisms of Small-Molecule Activation: Superoxide Dismutation and Oxygen/Superoxide Reduction Reactivity Deriving from the Same Manganese Complex. J Am Chem Soc 2017; 139:1472-1484. [PMID: 28111938 DOI: 10.1021/jacs.6b08394] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Readily exchangeable water molecules are commonly found in the active sites of oxidoreductases, yet the overwhelming majority of studies on small-molecule mimics of these enzymes entirely ignores the contribution of water to the reactivity. Studies of how these enzymes can continue to function in spite of the presence of highly oxidizing species are likewise limited. The mononuclear MnII complex with the potentially hexadentate ligand N-(2-hydroxy-5-methylbenzyl)-N,N',N'-tris(2-pyridinylmethyl)-1,2-ethanediamine (LOH) was previously found to act as both a H2O2-responsive MRI contrast agent and a mimic of superoxide dismutase (SOD). Here, we studied this complex in aqueous solutions at different pH values in order to determine its (i) acid-base equilibria, (ii) coordination equilibria, (iii) substitution lability and operative mechanisms for water exchange, (iv) redox behavior and ability to participate in proton-coupled electron transfer (PCET) reactions, (v) SOD activity and reductive activity toward both oxygen and superoxide, and (vi) mechanism for its transformation into the binuclear MnII complex with (H)OL-LOH and its hydroxylated derivatives. The conclusions drawn from potentiometric titrations, low-temperature mass spectrometry, temperature- and pressure-dependent 17O NMR spectroscopy, electrochemistry, stopped-flow kinetic analyses, and EPR measurements were supported by the structural characterization and quantum chemical analysis of proposed intermediate species. These comprehensive studies enabled us to determine how transiently bound water molecules impact the rate and mechanism of SOD catalysis. Metal-bound water molecules facilitate the PCET necessary for outer-sphere SOD activity. The absence of the water ligand, conversely, enables the inner-sphere reduction of both superoxide and dioxygen. The LOH complex maintains its SOD activity in the presence of •OH and MnIV-oxo species by channeling these oxidants toward the synthesis of a functionally equivalent binuclear MnII species.
Collapse
Affiliation(s)
- Isabell Kenkel
- Department of Chemistry and Pharmacy, University Erlangen-Nuremberg , 91058 Erlangen, Germany
| | - Alicja Franke
- Department of Chemistry and Pharmacy, University Erlangen-Nuremberg , 91058 Erlangen, Germany
| | - Maximilian Dürr
- Department of Chemistry and Pharmacy, University Erlangen-Nuremberg , 91058 Erlangen, Germany
| | - Achim Zahl
- Department of Chemistry and Pharmacy, University Erlangen-Nuremberg , 91058 Erlangen, Germany
| | - Carlos Dücker-Benfer
- Department of Chemistry and Pharmacy, University Erlangen-Nuremberg , 91058 Erlangen, Germany
| | - Jens Langer
- Department of Chemistry and Pharmacy, University Erlangen-Nuremberg , 91058 Erlangen, Germany
| | - Milos R Filipović
- Department of Chemistry and Pharmacy, University Erlangen-Nuremberg , 91058 Erlangen, Germany
| | - Meng Yu
- Department of Chemistry and Biochemistry, Auburn University , Auburn, Alabama 36849, United States
| | - Ralph Puchta
- Department of Chemistry and Pharmacy, University Erlangen-Nuremberg , 91058 Erlangen, Germany
| | - Stephanie R Fiedler
- Department of Chemistry, Colorado State University , Fort Collins, Colorado 80523-1872, United States
| | - Matthew P Shores
- Department of Chemistry, Colorado State University , Fort Collins, Colorado 80523-1872, United States
| | - Christian R Goldsmith
- Department of Chemistry and Biochemistry, Auburn University , Auburn, Alabama 36849, United States
| | | |
Collapse
|
2
|
Lazić D, Arsenijević A, Puchta R, Bugarčić ŽD, Rilak A. DNA binding properties, histidine interaction and cytotoxicity studies of water soluble ruthenium(ii) terpyridine complexes. Dalton Trans 2016; 45:4633-46. [PMID: 26855406 DOI: 10.1039/c5dt04132e] [Citation(s) in RCA: 65] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
In this study, two representatives of previously synthesized ruthenium(ii) terpyridine complexes, i.e., [Ru(Cl-tpy)(en)Cl][Cl] (1) and [Ru(Cl-tpy)(dach)Cl][Cl] (2), were chosen and a detailed study of the kinetic parameters of their reactivity toward l-histidine (l-His), using the UV-Vis and (1)H NMR techniques, was developed. The inner molecular rearrangement from N3-coordinated l-His to the N1 bound isomer, observable in the NMR data, was corroborated by DFT calculations favoring N1 coordination by nearly 4 kcal mol(-1). These two ruthenium(ii) terpyridine complexes were investigated for their interactions with DNA employing UV-Vis spectroscopy, DNA viscosity measurements and fluorescence quenching measurements. The high binding constants obtained in the DNA binding studies (Kb = 10(4)-10(5) M(-1)) suggest a strong binding of the complexes to calf thymus (CT) DNA. Competitive studies with ethidium bromide (EB) showed that the complexes can displace DNA-bound EB, suggesting strong competition with EB (Ksv = 1.5-2.5 × 10(4) M(-1)). In fact, the results indicate that these complexes can bind to DNA covalently and non-covalently. In order to gain insight of the behavior of a neutral compound, besides the four previously synthesized cationic complexes [Ru(Cl-tpy)(en)Cl][Cl] (1), [Ru(Cl-tpy)(dach)Cl][Cl] (2), [Ru(Cl-tpy)(bpy)Cl][Cl] (3) and [Ru(tpy)Cl3] (P2), a new complex, [Ru(Cl-tpy)(pic)Cl] (4), was used in the biological studies. Their cytotoxicity was investigated against three different tumor cell lines, i.e., A549 (human lung carcinoma cell line), HCT116 (human colon carcinoma cell line), and CT26 (mouse colon carcinoma cell line), by the MTT assay. Complexes 1 and 2 showed higher activity than complexes 3, 4 and P2 against all the selected cell lines. The results on in vitro anticancer activity confirmed that only compounds that hydrolyze the monodentate ligand at a reasonable rate show moderate activity, provided that the chelate ligand is a hydrogen bond donor.
Collapse
Affiliation(s)
- Dejan Lazić
- Faculty of Medicine, Centre for Molecular Medicine and Stem Cell Research, University of Kragujevac, Svetozara Markovića 69, 34000 Kragujevac, Serbia
| | | | | | | | | |
Collapse
|
3
|
Kumar P, Irrgang T, Kostakis GE, Kempe R. Phosphine-free chiral iridium catalysts for asymmetric catalytic hydrogenation of simple ketones. RSC Adv 2016. [DOI: 10.1039/c6ra04524c] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Phosphine free iridium catalysts with simple structures show efficient enantioselectivities and activities in the asymmetric hydrogenation of simple ketones by using chiral iridium catalysts to chiral alcohols with up to 96% ee.
Collapse
Affiliation(s)
- Prashant Kumar
- Department of Chemistry
- School of Life Sciences
- University of Sussex
- Brighton BN1 9QJ, UK
- Inorganic Chemistry II
| | - Torsten Irrgang
- Inorganic Chemistry II
- University of Bayreuth
- 95440-Bayreuth, Germany
| | - George E. Kostakis
- Department of Chemistry
- School of Life Sciences
- University of Sussex
- Brighton BN1 9QJ, UK
| | - Rhett Kempe
- Inorganic Chemistry II
- University of Bayreuth
- 95440-Bayreuth, Germany
| |
Collapse
|
4
|
Sperger T, Sanhueza IA, Kalvet I, Schoenebeck F. Computational Studies of Synthetically Relevant Homogeneous Organometallic Catalysis Involving Ni, Pd, Ir, and Rh: An Overview of Commonly Employed DFT Methods and Mechanistic Insights. Chem Rev 2015. [PMID: 26207572 DOI: 10.1021/acs.chemrev.5b00163] [Citation(s) in RCA: 410] [Impact Index Per Article: 45.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Theresa Sperger
- Institute of Organic Chemistry, RWTH Aachen University , Landoltweg 1, 52074 Aachen, Germany
| | - Italo A Sanhueza
- Institute of Organic Chemistry, RWTH Aachen University , Landoltweg 1, 52074 Aachen, Germany.,Laboratory of Organic Chemistry, ETH Zürich , Vladimir-Prelog-Weg 3, 8093 Zürich, Switzerland
| | - Indrek Kalvet
- Institute of Organic Chemistry, RWTH Aachen University , Landoltweg 1, 52074 Aachen, Germany
| | - Franziska Schoenebeck
- Institute of Organic Chemistry, RWTH Aachen University , Landoltweg 1, 52074 Aachen, Germany
| |
Collapse
|
5
|
Otsuka T, Ishii A, Dub PA, Ikariya T. Practical Selective Hydrogenation of α-Fluorinated Esters with Bifunctional Pincer-Type Ruthenium(II) Catalysts Leading to Fluorinated Alcohols or Fluoral Hemiacetals. J Am Chem Soc 2013; 135:9600-3. [DOI: 10.1021/ja403852e] [Citation(s) in RCA: 88] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Takashi Otsuka
- Chemical Research Center, Central Glass Co. Ltd., 2805 Imafuku-Nakadai Kawagoe,
Saitama, 350-1151, Japan
| | - Akihiro Ishii
- Chemical Research Center, Central Glass Co. Ltd., 2805 Imafuku-Nakadai Kawagoe,
Saitama, 350-1151, Japan
| | - Pavel A. Dub
- Department of Applied Chemistry,
Graduate School of Science and Engineering, Tokyo Institute of Technology, 2-12-1-E4-1 O-okayama, Meguro-ku, Tokyo
152-8552, Japan
| | - Takao Ikariya
- Department of Applied Chemistry,
Graduate School of Science and Engineering, Tokyo Institute of Technology, 2-12-1-E4-1 O-okayama, Meguro-ku, Tokyo
152-8552, Japan
| |
Collapse
|
6
|
Hasanayn F, Morris RH. Symmetry Aspects of H2 Splitting by Five-Coordinate d6 Ruthenium Amides, and Calculations on Acetophenone Hydrogenation, Ruthenium Alkoxide Formation, and Subsequent Hydrogenolysis in a Model trans-Ru(H)2(diamine)(diphosphine) System. Inorg Chem 2012; 51:10808-18. [DOI: 10.1021/ic301233j] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Faraj Hasanayn
- Department of Chemistry, American University of Beirut, Beirut,
Lebanon
| | - Robert H. Morris
- Department
of Chemistry, University of Toronto, 80 St. George
Street, Toronto, Ontario M5S 3H6, Canada
| |
Collapse
|
7
|
Jolley KE, Zanotti‐Gerosa A, Hancock F, Dyke A, Grainger DM, Medlock JA, Nedden HG, Le Paih JJM, Roseblade SJ, Seger A, Sivakumar V, Prokes I, Morris DJ, Wills M. Application of Tethered Ruthenium Catalysts to Asymmetric Hydrogenation of Ketones, and the Selective Hydrogenation of Aldehydes. Adv Synth Catal 2012. [DOI: 10.1002/adsc.201200362] [Citation(s) in RCA: 68] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Katherine E. Jolley
- Department of Chemistry, The University of Warwick, Coventry, CV4 7AL, U.K. Fax: (+44)‐24‐7652‐4112; phone (+44)‐24‐7652‐3260
| | - Antonio Zanotti‐Gerosa
- Johnson Matthey Chiral Technologies, Johnson Matthey Catalysts, 28 Cambridge Science Park, Milton Road, Cambridge, CB4 0FP, U.K
| | - Fred Hancock
- Johnson Matthey Chiral Technologies, Johnson Matthey Catalysts, 28 Cambridge Science Park, Milton Road, Cambridge, CB4 0FP, U.K
| | - Alan Dyke
- Johnson Matthey Chiral Technologies, Johnson Matthey Catalysts, 28 Cambridge Science Park, Milton Road, Cambridge, CB4 0FP, U.K
| | - Damian M. Grainger
- Johnson Matthey Chiral Technologies, Johnson Matthey Catalysts, 28 Cambridge Science Park, Milton Road, Cambridge, CB4 0FP, U.K
| | - Jonathan A. Medlock
- Johnson Matthey Chiral Technologies, Johnson Matthey Catalysts, 28 Cambridge Science Park, Milton Road, Cambridge, CB4 0FP, U.K
| | - Hans G. Nedden
- Johnson Matthey Chiral Technologies, Johnson Matthey Catalysts, 28 Cambridge Science Park, Milton Road, Cambridge, CB4 0FP, U.K
| | - Jacques J. M. Le Paih
- Johnson Matthey Chiral Technologies, Johnson Matthey Catalysts, 28 Cambridge Science Park, Milton Road, Cambridge, CB4 0FP, U.K
| | - Stephen J. Roseblade
- Johnson Matthey Chiral Technologies, Johnson Matthey Catalysts, 28 Cambridge Science Park, Milton Road, Cambridge, CB4 0FP, U.K
| | - Andreas Seger
- Johnson Matthey Chemicals India Pvt. Ltd., Plot No. 6, MIDC Industrial Estate, Taloja Dist. Raigad, Maharashtra – 410208, India
| | - Vilvanathan Sivakumar
- Johnson Matthey Chemicals India Pvt. Ltd., Plot No. 6, MIDC Industrial Estate, Taloja Dist. Raigad, Maharashtra – 410208, India
| | - Ivan Prokes
- Department of Chemistry, The University of Warwick, Coventry, CV4 7AL, U.K. Fax: (+44)‐24‐7652‐4112; phone (+44)‐24‐7652‐3260
| | - David J. Morris
- Department of Chemistry, The University of Warwick, Coventry, CV4 7AL, U.K. Fax: (+44)‐24‐7652‐4112; phone (+44)‐24‐7652‐3260
| | - Martin Wills
- Department of Chemistry, The University of Warwick, Coventry, CV4 7AL, U.K. Fax: (+44)‐24‐7652‐4112; phone (+44)‐24‐7652‐3260
| |
Collapse
|
8
|
O WWN, Lough AJ, Morris RH. Bifunctional Mechanism with Unconventional Intermediates for the Hydrogenation of Ketones Catalyzed by an Iridium(III) Complex Containing an N-Heterocyclic Carbene with a Primary Amine Donor. Organometallics 2012. [DOI: 10.1021/om300071v] [Citation(s) in RCA: 67] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Wylie W. N. O
- Davenport Laboratory, Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S
3H6, Canada
| | - Alan J. Lough
- Davenport Laboratory, Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S
3H6, Canada
| | - Robert H. Morris
- Davenport Laboratory, Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S
3H6, Canada
| |
Collapse
|
9
|
O WWN, Lough AJ, Morris RH. Factors Favoring Efficient Bifunctional Catalysis. Study of a Ruthenium(II) Hydrogenation Catalyst Containing an N-Heterocyclic Carbene with a Primary Amine Donor. Organometallics 2012. [DOI: 10.1021/om300108p] [Citation(s) in RCA: 76] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Wylie W. N. O
- Davenport Laboratory, Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S
3H6, Canada
| | - Alan J. Lough
- Davenport Laboratory, Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S
3H6, Canada
| | - Robert H. Morris
- Davenport Laboratory, Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S
3H6, Canada
| |
Collapse
|
10
|
Askevold B, Roesky HW, Schneider S. Learning from the Neighbors: Improving Homogeneous Catalysts with Functional Ligands Motivated by Heterogeneous and Biocatalysis. ChemCatChem 2012. [DOI: 10.1002/cctc.201100347] [Citation(s) in RCA: 85] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Bjorn Askevold
- Department Chemie und Pharmazie, Friedrich‐Alexander Universität Erlangen–Nürnberg, Egerlandstr. 1, 91058 Erlangen (Germany)
| | - Herbert W. Roesky
- Institut für Anorganische Chemie, Georg‐August Universität Göttingen, Tammannstr. 4, 37077 Göttingen (Germany)
| | - Sven Schneider
- Department Chemie und Pharmazie, Friedrich‐Alexander Universität Erlangen–Nürnberg, Egerlandstr. 1, 91058 Erlangen (Germany)
| |
Collapse
|
11
|
Petrović B, Bugarčić ŽD, Dees A, Ivanović-Burmazović I, Heinemann FW, Puchta R, Steinmann SN, Corminboeuf C, van Eldik R. Role of π-acceptor effects in controlling the lability of novel monofunctional Pt(II) and Pd(II) complexes: crystal structure of [Pt(tripyridinedimethane)Cl]Cl. Inorg Chem 2012; 51:1516-29. [PMID: 22263538 DOI: 10.1021/ic201807a] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The kinetics and mechanism of substitution reactions of novel monofunctional [Pt(tpdm)Cl](+) and [Pd(tpdm)Cl](+) complexes (where tpdm = tripyridinedimethane) and their aqua analogues with thiourea (tu), L-methionine (L-met), glutathione (GSH), and guanosine-5'-monophosphate (5'-GMP) were studied in 0.1 M NaClO(4) at pH = 2.5 (in the presence of 10 mM NaCl for reactions of the chlorido complexes). The reactivity of the investigated nucleophiles follows the order tu > l-met > GSH > 5'-GMP. The reported rate constants showed the higher reactivity of the Pd(II) complexes as well as the higher reactivity of the aqua complex than the corresponding chlorido complex. The negative values reported for the activation entropy as well as the activation volume confirmed an associative substitution mode. In addition, the molecular and crystal structure of [Pt(tpdm)Cl]Cl was determined by X-ray crystallography. The compound crystallizes in a monoclinic space group C2/c with two independent molecules of the complex and unit cell dimensions of a = 38.303(2) Å, b = 9.2555(5) Å, c = 27.586(2) Å, β = 133.573(1)°, and V = 7058.3(8) Å(3). The cationic complex [Pt(tpdm)Cl](+) exhibits square-planar coordination around the Pt(II) center. The lability of the [Pt(tpdm)Cl](+) complex is orders of magnitude lower than that of [Pt(terpyridine)Cl](+). Quantum chemical calculations were performed on the [Pt(tpdm)Cl](+) and [Pt(terpyridine)Cl](+) complexes and their reactions with thiourea. Theoretical computations for the corresponding Ni(II) complexes clearly demonstrated that π-back-bonding properties of the terpyridine chelate can account for acceleration of the nucleophilic substitution process as compared to the tpdm chelate, where introduction of two methylene groups prevents such an effective π-back bonding.
Collapse
Affiliation(s)
- Biljana Petrović
- Faculty of Science, University of Kragujevac, Radoja Domanovica 12, P.O. Box 60, 34000 Kragujevac, Serbia
| | | | | | | | | | | | | | | | | |
Collapse
|
12
|
Zhang X, Guo X, Chen Y, Tang Y, Lei M, Fang W. Mechanism investigation of ketone hydrogenation catalyzed by ruthenium bifunctional catalysts: insights from a DFT study. Phys Chem Chem Phys 2012; 14:6003-12. [DOI: 10.1039/c2cp23936a] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
13
|
Chen K, Pullarkat SA, Ma M, Li Y, Leung PH. Chiral cyclopalladated complex promoted asymmetric synthesis of diester-substituted P,N-ligands via stepwise hydrophosphination and hydroamination reactions. Dalton Trans 2012; 41:5391-400. [DOI: 10.1039/c2dt12379g] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
14
|
O WWN, Lough AJ, Morris RH. Mechanistic Investigation of the Hydrogenation of Ketones Catalyzed by a Ruthenium(II) Complex Featuring an N-Heterocyclic Carbene with a Tethered Primary Amine Donor: Evidence for an Inner Sphere Mechanism. Organometallics 2011. [DOI: 10.1021/om101152m] [Citation(s) in RCA: 73] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Wylie W. N. O
- Davenport Laboratory, Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6, Canada
| | - Alan J. Lough
- Davenport Laboratory, Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6, Canada
| | - Robert H. Morris
- Davenport Laboratory, Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6, Canada
| |
Collapse
|
15
|
Dahlenburg L, Kramer D, Heinemann FW. Chiral Ir(I) and Ir(III) complexes [Ir{(R)-binap} (1,2-diamine)]Cl and trans-[Ir(H)2{(R)-binap} (1,2-diamine)]Cl: synthesis and catalytic applications. J COORD CHEM 2010. [DOI: 10.1080/00958971003746108] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Lutz Dahlenburg
- a Department Chemie und Pharmazie , Friedrich-Alexander-Universität Erlangen-Nürnberg , Gerlandstraße 1, D-91058 Erlangen, Germany
| | - Dagmar Kramer
- a Department Chemie und Pharmazie , Friedrich-Alexander-Universität Erlangen-Nürnberg , Gerlandstraße 1, D-91058 Erlangen, Germany
| | - Frank W. Heinemann
- a Department Chemie und Pharmazie , Friedrich-Alexander-Universität Erlangen-Nürnberg , Gerlandstraße 1, D-91058 Erlangen, Germany
| |
Collapse
|
16
|
Cook E, Masuda JD, Xia A. Synthesis, characterization, and application of palladium complexes containing 8-quinolylphosphinite ligands. CAN J CHEM 2010. [DOI: 10.1139/v09-156] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Palladium complexes containing 8-quinolylphosphinite ligands have been synthesized and characterized. Their solid state structures were determined by single-crystal X-ray diffraction. They were found to be active catalysts for Suzuki coupling reactions of phenylboronic acid and various aryl halides.
Collapse
Affiliation(s)
- Earl Cook
- Department of Chemistry, Mount Saint Vincent University, Halifax, NS B3M 2J6, Canada
- Department of Chemistry, Saint Mary’s University, Halifax, NS B3H 3C3, Canada
| | - Jason D. Masuda
- Department of Chemistry, Mount Saint Vincent University, Halifax, NS B3M 2J6, Canada
- Department of Chemistry, Saint Mary’s University, Halifax, NS B3H 3C3, Canada
| | - Aibing Xia
- Department of Chemistry, Mount Saint Vincent University, Halifax, NS B3M 2J6, Canada
- Department of Chemistry, Saint Mary’s University, Halifax, NS B3H 3C3, Canada
| |
Collapse
|
17
|
Lei M, Zhang W, Chen Y, Tang Y. Preference of H2 as Hydrogen Source in Hydrogenation of Ketones Catalyzed by Late Transition Metal Complexes. A DFT Study. Organometallics 2010. [DOI: 10.1021/om900434n] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ming Lei
- State Key Laboratory of Chemical Resource Engineering, Institute of Materia Medica, College of Science, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China
| | - Wenchao Zhang
- State Key Laboratory of Chemical Resource Engineering, Institute of Materia Medica, College of Science, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China
| | - Yue Chen
- State Key Laboratory of Chemical Resource Engineering, Institute of Materia Medica, College of Science, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China
| | - Yanhui Tang
- School of Materials Science & Engineering, Beijing Institute of Fashion Technology, Beijing 100029, People's Republic of China
| |
Collapse
|
18
|
Martins JE, Wills M. Ir(III) complexes of diamine ligands for asymmetric ketone hydrogenation. Tetrahedron 2009. [DOI: 10.1016/j.tet.2009.05.012] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|