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Frei A, Ramu S, Lowe GJ, Dinh H, Semenec L, Elliott AG, Zuegg J, Deckers A, Jung N, Bräse S, Cain AK, Blaskovich MAT. Platinum Cyclooctadiene Complexes with Activity against Gram-positive Bacteria. ChemMedChem 2021; 16:3165-3171. [PMID: 34018686 PMCID: PMC8596843 DOI: 10.1002/cmdc.202100157] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2021] [Indexed: 11/17/2022]
Abstract
Antimicrobial resistance is a looming health crisis, and it is becoming increasingly clear that organic chemistry alone is not sufficient to continue to provide the world with novel and effective antibiotics. Recently there has been an increased number of reports describing promising antimicrobial properties of metal-containing compounds. Platinum complexes are well known in the field of inorganic medicinal chemistry for their tremendous success as anticancer agents. Here we report on the promising antibacterial properties of platinum cyclooctadiene (COD) complexes. Amongst the 15 compounds studied, the simplest compounds Pt(COD)X2 (X=Cl, I, Pt1 and Pt2) showed excellent activity against a panel of Gram-positive bacteria including vancomycin and methicillin resistant Staphylococcus aureus. Additionally, the lead compounds show no toxicity against mammalian cells or haemolytic properties at the highest tested concentrations, indicating that the observed activity is specific against bacteria. Finally, these compounds showed no toxicity against Galleria mellonella at the highest measured concentrations. However, preliminary efficacy studies in the same animal model found no decrease in bacterial load upon treatment with Pt1 and Pt2. Serum exchange studies suggest that these compounds exhibit high serum binding which reduces their bioavailability in vivo, mandating alternative administration routes such as e. g. topical application.
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Affiliation(s)
- Angelo Frei
- Centre for Superbug SolutionsInstitute for Molecular BioscienceThe University of QueenslandSt. LuciaQLD 4072Australia
| | - Soumya Ramu
- Centre for Superbug SolutionsInstitute for Molecular BioscienceThe University of QueenslandSt. LuciaQLD 4072Australia
| | - Gabrielle J. Lowe
- Centre for Superbug SolutionsInstitute for Molecular BioscienceThe University of QueenslandSt. LuciaQLD 4072Australia
| | - Hue Dinh
- ARC Centre of Excellence in Synthetic BiologyDepartment of Molecular SciencesMacquarie UniversitySydneyNSWAustralia
| | - Lucie Semenec
- ARC Centre of Excellence in Synthetic BiologyDepartment of Molecular SciencesMacquarie UniversitySydneyNSWAustralia
| | - Alysha G. Elliott
- Centre for Superbug SolutionsInstitute for Molecular BioscienceThe University of QueenslandSt. LuciaQLD 4072Australia
| | - Johannes Zuegg
- Centre for Superbug SolutionsInstitute for Molecular BioscienceThe University of QueenslandSt. LuciaQLD 4072Australia
| | - Anke Deckers
- Institute of Organic ChemistryKarlsruhe Institute of Technology (KIT)Fritz-Haber-Weg 676131KarlsruheGermany
| | - Nicole Jung
- Institute of Organic ChemistryKarlsruhe Institute of Technology (KIT)Fritz-Haber-Weg 676131KarlsruheGermany
- Institute of Biological and Chemical Systems – Functional Molecular Systems (IBCS-FMS)Karlsruhe Institute of Technology (KIT)Hermann-von-Helmholtz-Platz 176344Eggenstein-LeopoldshafenGermany
| | - Stefan Bräse
- Institute of Organic ChemistryKarlsruhe Institute of Technology (KIT)Fritz-Haber-Weg 676131KarlsruheGermany
- Institute of Biological and Chemical Systems – Functional Molecular Systems (IBCS-FMS)Karlsruhe Institute of Technology (KIT)Hermann-von-Helmholtz-Platz 176344Eggenstein-LeopoldshafenGermany
| | - Amy K. Cain
- ARC Centre of Excellence in Synthetic BiologyDepartment of Molecular SciencesMacquarie UniversitySydneyNSWAustralia
| | - Mark A. T. Blaskovich
- Centre for Superbug SolutionsInstitute for Molecular BioscienceThe University of QueenslandSt. LuciaQLD 4072Australia
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Vincent KB, Parthey M, Yufit DS, Kaupp M, Low PJ. Synthesis and redox properties of mono-, di- and tri-metallic platinum-ethynyl complexes based on the trans-Pt(C6H4N{C6H4OCH3-4}2)(C CR)(PPh3)2 motif. Polyhedron 2015. [DOI: 10.1016/j.poly.2014.04.035] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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3
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Faust M, Enders M, Gao K, Reichenbach L, Muller T, Gerlinger W, Sachweh B, Kasper G, Bruns M, Bräse S, Seipenbusch M. Synthesis of Pt/SiO2Catalyst Nanoparticles from a Continuous Aerosol Process using Novel Cyclo-octadienylplatinum Precursors. ACTA ACUST UNITED AC 2013. [DOI: 10.1002/cvde.201207038] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Matthias Faust
- Institute for Mechanical Process Engineering and Mechanics; Karlsruhe Institute of Technology (KIT); Straße am Forum 8; D-76131; Karlsruhe; (Germany)
| | - Mirja Enders
- Institute of Organic Chemistry; Karlsruhe Institute of Technology (KIT); Fritz-Haber-Weg 6; D-76131; Karlsruhe; (Germany)
| | - Kun Gao
- Institute for Mechanical Process Engineering and Mechanics; Karlsruhe Institute of Technology (KIT); Straße am Forum 8; D-76131; Karlsruhe; (Germany)
| | - Linus Reichenbach
- Institute of Organic Chemistry; Karlsruhe Institute of Technology (KIT); Fritz-Haber-Weg 6; D-76131; Karlsruhe; (Germany)
| | - Thierry Muller
- Institute of Organic Chemistry; Karlsruhe Institute of Technology (KIT); Fritz-Haber-Weg 6; D-76131; Karlsruhe; (Germany)
| | | | - Bernd Sachweh
- Joint Lab IP3; BASF SE; Ludwigshafen; D-67056; (Germany)
| | - Gerhard Kasper
- Institute for Mechanical Process Engineering and Mechanics; Karlsruhe Institute of Technology (KIT); Straße am Forum 8; D-76131; Karlsruhe; (Germany)
| | - Michael Bruns
- Institute for Applied Materials; Karlsruhe Institute of Technology (KIT); Eggenstein-Leopoldshafen; D-76344; (Germany)
| | - Stefan Bräse
- Institute of Organic Chemistry; Karlsruhe Institute of Technology (KIT); Fritz-Haber-Weg 6; D-76131; Karlsruhe; (Germany)
| | - Martin Seipenbusch
- Institute for Mechanical Process Engineering and Mechanics; Karlsruhe Institute of Technology (KIT); Straße am Forum 8; D-76131; Karlsruhe; (Germany)
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Mintcheva N, Georgieva I, Mihaylov T, Trendafilova N, Tanabe M, Osakada K. NMR, IR and DFT studies of phenylplatinum complexes with O-monodentate coordinated silsesquioxanate and auxiliary phosphine ligands. J Organomet Chem 2012. [DOI: 10.1016/j.jorganchem.2011.09.023] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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5
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Dell’Amico DB, Labella L, Marchetti F, Samaritani S. Convenient preparation of (η4-alkadiene)dichloroplatinum(II) complexes from [PtCl6]2− anions and their reduction to platinum(0) alkene complexes under phase-transfer catalysis conditions. J Organomet Chem 2011. [DOI: 10.1016/j.jorganchem.2010.12.043] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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6
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Itazaki M, Shigesato Y, Nakazawa H. Platinum complexes with diamino-substituted phosphorus ligands: Synthesis, characterization, and their reactivity with a Lewis acid. CR CHIM 2010. [DOI: 10.1016/j.crci.2010.02.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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7
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8
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Kakeya M, Tanabe M, Nakamura Y, Osakada K. Dialkyl- and diaryl-platinum(II) complexes with secondary phosphines: Preparation, structure and thermal reaction giving the metallopolymer. J Organomet Chem 2009. [DOI: 10.1016/j.jorganchem.2009.03.009] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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9
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Sangtrirutnugul P, Tilley TD. Alkyl and Hydrido Complexes of Platinum(IV) Supported by the Bis(8-quinolyl)methylsilyl Ligand. Organometallics 2008. [DOI: 10.1021/om701162h] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
| | - T. Don Tilley
- Department of Chemistry, University of California, Berkeley, Berkeley, California 94720
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10
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Usón R, Forniés J, Espinet P, Garín J. Preparation of Halo- or Pseudohalo Methyl Bis (Phenyl)(Chelate) Platinum(IV) Complexes. ACTA ACUST UNITED AC 2006. [DOI: 10.1080/00945717708055960] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- R. Usón
- a Department of Inorganic , Chemistry University of Zaragoza , Spain
| | - J. Forniés
- a Department of Inorganic , Chemistry University of Zaragoza , Spain
| | - P. Espinet
- a Department of Inorganic , Chemistry University of Zaragoza , Spain
| | - J. Garín
- a Department of Inorganic , Chemistry University of Zaragoza , Spain
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11
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Kunkely H, Vogler A. Photoluminescence of PtII(cyclooctatetraene)(CN)2 originating from a MLCT triplet. INORG CHEM COMMUN 2006. [DOI: 10.1016/j.inoche.2006.03.032] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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12
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Mintcheva N, Tanabe M, Osakada K. Preparation and Structure of New Phenylplatinum Complexes Containing Silsesquioxane as a Monodentate or Bidentate Ligand. Organometallics 2006. [DOI: 10.1021/om060192s] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Neli Mintcheva
- Chemical Resources Laboratory (Mail Box R1-3), Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan
| | - Makoto Tanabe
- Chemical Resources Laboratory (Mail Box R1-3), Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan
| | - Kohtaro Osakada
- Chemical Resources Laboratory (Mail Box R1-3), Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan
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13
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Baldwin JA, Butler IS, Gilson DF. Effect of high external pressures on the vibrational spectra of crystalline dichloro(1,5-cycloctadiene)platinum(II), Pt(η4-C8H12)Cl2. Inorganica Chim Acta 2006. [DOI: 10.1016/j.ica.2006.02.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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14
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Karshtedt D, McBee JL, Bell AT, Tilley TD. Stoichiometric and Catalytic Arene Activations by Platinum Complexes Containing Bidentate Monoanionic Nitrogen-Based Ligands. Organometallics 2006. [DOI: 10.1021/om0600902] [Citation(s) in RCA: 64] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Dmitry Karshtedt
- Departments of Chemistry and Chemical Engineering, University of California, Berkeley, Berkeley, California 94720, and Chemical Sciences Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, California 94720
| | - Jennifer L. McBee
- Departments of Chemistry and Chemical Engineering, University of California, Berkeley, Berkeley, California 94720, and Chemical Sciences Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, California 94720
| | - Alexis T. Bell
- Departments of Chemistry and Chemical Engineering, University of California, Berkeley, Berkeley, California 94720, and Chemical Sciences Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, California 94720
| | - T. Don Tilley
- Departments of Chemistry and Chemical Engineering, University of California, Berkeley, Berkeley, California 94720, and Chemical Sciences Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, California 94720
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15
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Pantcheva I, Osakada K. Synthesis and Reactivity of a Platinum(II) Complex with a Chelating Dehydro(arylboronic anhydride) Ligand. Transmetalation of Arylboronic Acid. Organometallics 2006. [DOI: 10.1021/om0509903] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ivayla Pantcheva
- Chemical Resources Laboratory, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan
| | - Kohtaro Osakada
- Chemical Resources Laboratory, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan
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16
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Hörner M, de Oliveira GM, de Oliveira JS, Teles WM, Filgueiras CAL, Beck J. Stabilization of the (η4-COD)Pt-fragment (COD=η2,η2-cyclo-octa-1,5-diene) by a bistriazenide: Synthesis and X-ray structural characterization of [(η4-COD)Pt(NNN-Ph)2C6H4], a neutral 1,2-bis(phenyltriazenido)benzene complex of platinum(II). J Organomet Chem 2006. [DOI: 10.1016/j.jorganchem.2005.09.018] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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17
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18
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Itazaki M, Nishihara Y, Osakada K. Platinum complex-catalyzed hydrosilylation and isomerization of methylenecyclopropane derivatives. Effect of structures of the substrate and catalyst. J Org Chem 2002; 67:6889-95. [PMID: 12353979 DOI: 10.1021/jo020293+] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
PtI(2)(PPh(3))(2) catalyzes hydrosilylation of 2,2-diphenyl-1-methylenecyclopropane with HSiEt(3), HSiPh(3), HSiEt(2)Ph, HSiPhCl(2), and HSiCl(3) under solvent-free conditions at 140 degrees C to produce the silyl compounds with a (2,2-diphenylcyclopropyl)methyl substituent in moderate to high yields without ring-opening of the substrate. PtI(2)(PPh(3))(2) is converted by the reaction into PtH(I)(PPh(3))(2), which also catalyzes the hydrosilylation of the methylenecyclopropanes. The reaction of 2-phenyl-1-methylenecyclopropane, 2-methyl-2-phenyl-1-methylenecyclopropane, 2,2-diphenethyl-1-methylenecyclopropane, and alkylidenecyclopropanes with HSiEt(3) catalyzed by PtI(2)(PPh(3))(2) causes addition of hydrosilane to the substrate accompanied by ring-opening. 2,2-Diphenyl-1-methylenecyclopropane undergoes ring-opening isomerization in the presence of HSi(OEt)Me(2) and Pt(PEt(3))(3) catalyst to give 1,1-diphenyl-1,3-butadiene. The pathways for the hydrosilylation and the isomerization are discussed.
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Affiliation(s)
- Masumi Itazaki
- Chemical Resources Laboratory, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan
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19
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Appleton TG, Bennett MA. Preparation and properties of hydroxo(methyl)-1,2-bis(diphenylphosphino)ethaneplatinum(II). A trans-influence series including .sigma. carbon donor ligands based on platinum-phosphorus coupling constants. Inorg Chem 2002. [DOI: 10.1021/ic50181a048] [Citation(s) in RCA: 188] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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20
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Klein A, McInnes EJL, Kaim W. Organometallic platinum(ii) complexes of methyl-substituted phenanthrolines. ACTA ACUST UNITED AC 2002. [DOI: 10.1039/b201419j] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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21
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Reactions of HOSiMe2Ar with PtPPh3 complexes leading to SiC bond activation or formation of a siloxoplatinum complex. J Organomet Chem 2001. [DOI: 10.1016/s0022-328x(01)00796-3] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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22
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Klein A, van Slageren J, Záliš S. Spectroscopy and photochemical reactivity of cyclooctadiene platinum complexes. J Organomet Chem 2001. [DOI: 10.1016/s0022-328x(00)00792-0] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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23
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Klein A, Klinkhammer KW, Scheiring T. Cyclooctadienemethylplatinum complexes: synthesis, reactivity, molecular structure and spectroscopic properties of the organometallic hydroxoplatinum(II) complex [(COD)PtMe(OH)]. J Organomet Chem 1999. [DOI: 10.1016/s0022-328x(99)00500-8] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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24
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Blacker AJ, Clarke ML, Loft MS, Mahon MF, Williams JMJ. Synthesis and Structure of Enantiomerically Pure Platinum Complexes of Phosphino-oxazolines and Their Use in Asymmetric Catalysis. Organometallics 1999. [DOI: 10.1021/om990186e] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- A. John Blacker
- Zeneca, Huddersfield Works, Leeds Road, Huddersfield HD2 1FF, U.K., Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, U.K., and Glaxo-Wellcome, DC1, Temple Hill, Dartford DA1 5AH, U.K
| | - Matthew L. Clarke
- Zeneca, Huddersfield Works, Leeds Road, Huddersfield HD2 1FF, U.K., Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, U.K., and Glaxo-Wellcome, DC1, Temple Hill, Dartford DA1 5AH, U.K
| | - Michael S. Loft
- Zeneca, Huddersfield Works, Leeds Road, Huddersfield HD2 1FF, U.K., Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, U.K., and Glaxo-Wellcome, DC1, Temple Hill, Dartford DA1 5AH, U.K
| | - Mary F. Mahon
- Zeneca, Huddersfield Works, Leeds Road, Huddersfield HD2 1FF, U.K., Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, U.K., and Glaxo-Wellcome, DC1, Temple Hill, Dartford DA1 5AH, U.K
| | - Jonathan M. J. Williams
- Zeneca, Huddersfield Works, Leeds Road, Huddersfield HD2 1FF, U.K., Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, U.K., and Glaxo-Wellcome, DC1, Temple Hill, Dartford DA1 5AH, U.K
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25
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Schager F, Haack KJ, Mynott R, Rufińska A, Pörschke KR. Novel (R2PC2H4PR2)M0−COT Complexes (M = Pd, Pt) Having Semiaromatic η2-COT or Dianionic η2(1,4)-COT Ligands. Organometallics 1998. [DOI: 10.1021/om970762b] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Frank Schager
- Max-Planck-Institut für Kohlenforschung, Postfach 101353, D-45466 Mülheim an der Ruhr, Germany
| | - Karl-Josef Haack
- Max-Planck-Institut für Kohlenforschung, Postfach 101353, D-45466 Mülheim an der Ruhr, Germany
| | - Richard Mynott
- Max-Planck-Institut für Kohlenforschung, Postfach 101353, D-45466 Mülheim an der Ruhr, Germany
| | - Anna Rufińska
- Max-Planck-Institut für Kohlenforschung, Postfach 101353, D-45466 Mülheim an der Ruhr, Germany
| | - Klaus-Richard Pörschke
- Max-Planck-Institut für Kohlenforschung, Postfach 101353, D-45466 Mülheim an der Ruhr, Germany
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27
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Romeo R, Alibrandi G. Structure-Reactivity Correlations for the Dissociative Uncatalyzed Isomerization of Monoalkylbis(phosphine)platinum(II) Solvento Complexes. Inorg Chem 1997; 36:4822-4830. [PMID: 11670162 DOI: 10.1021/ic970210l] [Citation(s) in RCA: 51] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Complexes of the type cis-[PtL(2)Me(2)] (1-14) (L = an extended series of phosphines of widely different steric and electronic properties) were synthesized, characterized, and used as precursors for the formation of cis-monoalkylplatinum(II) solvento species in methanol. The cleavage of the first platinum-alkyl bond by protonolysis is a fast process, but the subsequent cis to trans isomerization of the cationic solvento species [PtL(2)(Me)(MeOH)](+) is relatively slow and it can be( )()monitored using (31)P NMR or conventional spectrophotometry. A large collection of (1)H and (31)P NMR data for cis-[PtL(2)Me(2)], cis-[PtL(2)Me(MeOH)](+), and trans-[PtL(2)Me(MeOH)](+) complexes showed interesting dependencies upon the size, the sigma-donor capacity, and the mutual position of the phosphines in the coordination sphere of the metal. The rate constants for isomerization of cis-[PtL(2)Me(MeOH)](+) were resolved quantitatively into steric and electronic contributions of the phosphine ligands, by means of correlations with parameters which reflect their sigma-donor ability (chi values) and steric requirements (Tolman's cone angles, theta). The electronic and steric profiles obtained for these reactions are discussed within the framework of a mechanism which involves dissociative loss of the solvent molecule and interconversion of two geometrically distinct 3-coordinate T-shaped 14-electron intermediates. The factors controlling the stability of these coordinatively unsaturated species are discussed. The electronic and steric influences of phosphines as "spectator" ligands in a dissociative process are compared with those shown by these ligands when used as nucleophiles in associative substitution processes. The activation parameters DeltaH() and DeltaS() were measured using both conventional isothermal and non-isothermal spectrophotometric kinetics.
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Affiliation(s)
- Raffaello Romeo
- Dipartimento di Chimica Inorganica, Chimica Analitica e Chimica Fisica and Istituto di Chimica e Tecnologia dei Prodotti Naturali (ICTPN-CNR), Sezione di Messina, Università di Messina, Salita Sperone 31, Vill. S. Agata, 98166 Messina, Italy
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28
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Rendina LM, Puddephatt RJ. Oxidative Addition Reactions of Organoplatinum(II) Complexes with Nitrogen-Donor Ligands. Chem Rev 1997; 97:1735-1754. [PMID: 11848891 DOI: 10.1021/cr9704671] [Citation(s) in RCA: 301] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Louis M. Rendina
- Department of Chemistry, The University of Adelaide, Adelaide, South Australia 5005, Australia, and Department of Chemistry, The University of Western Ontario, London, Ontario N6A 5B7, Canada
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29
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Canty AJ, Fritsche SD, Jin H, Patel J, Skelton BW, White AH. Water and Protic Acids as Oxidants for Platinum(II): Diorgano(hydrido)platinum(IV) and Diorgano(hydroxo)platinum(IV) Chemistry, Including Structural Studies of Poly(pyrazol-1-yl)borate Complexes Pt(OH)R2{(pz)3BH} (R = Methyl, p-Tolyl) and Pt(OH)Me2{(pz)4B}·H2O. Organometallics 1997. [DOI: 10.1021/om9610814] [Citation(s) in RCA: 45] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Allan J. Canty
- Departments of Chemistry, University of Tasmania, Hobart, Tasmania, Australia, and University of Western Australia, Nedlands, Western Australia 6907, Australia
| | - Steven D. Fritsche
- Departments of Chemistry, University of Tasmania, Hobart, Tasmania, Australia, and University of Western Australia, Nedlands, Western Australia 6907, Australia
| | - Hong Jin
- Departments of Chemistry, University of Tasmania, Hobart, Tasmania, Australia, and University of Western Australia, Nedlands, Western Australia 6907, Australia
| | - Jim Patel
- Departments of Chemistry, University of Tasmania, Hobart, Tasmania, Australia, and University of Western Australia, Nedlands, Western Australia 6907, Australia
| | - Brian W. Skelton
- Departments of Chemistry, University of Tasmania, Hobart, Tasmania, Australia, and University of Western Australia, Nedlands, Western Australia 6907, Australia
| | - Allan H. White
- Departments of Chemistry, University of Tasmania, Hobart, Tasmania, Australia, and University of Western Australia, Nedlands, Western Australia 6907, Australia
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30
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Wyrwa R, Poppitz W, G�rls H. Massenspektrometrische und r�ntgenstrukturanalytische Untersuchungen an Komplexen des Typs (COD)PtX2 (X = Cl, Br, I, CH3, CH2CMe3, CH2SiMe3). Z Anorg Allg Chem 1997. [DOI: 10.1002/zaac.199762301103] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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31
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Affiliation(s)
- Ian D. Gay
- Department of Chemistry, Simon Fraser University, Burnaby, BC, Canada V5A 1S6
| | - G. Brent Young
- Department of Chemistry, Imperial College of Science, Technology and Medicine, London SW7 2AY, U.K
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Displacement of norbornadiene (NBD) from the mixed alkyl compound, Pt(CH3) (CF3)(NBD) by various ligands and the insertion of difluorocarbene into a PtCH3 bond promoted by the addition of iodide ion to Pt(CH3) (CF3)(NBD). J Organomet Chem 1993. [DOI: 10.1016/0022-328x(93)83128-i] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Synthesis of organosilicon polymers—II. Norbornadiene/PtII complex: Catalyst in step-polymerization. Eur Polym J 1992. [DOI: 10.1016/0014-3057(92)90188-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Grobe J, Hildebrandt W. Alternativ-Liganden. XIX. Platin(II)-Komplexe mit Donor/Akzeptor-Liganden des Typs Me2PCH2CH2SiXneM3-n (X = F, C6H4F) und (2-Me2PC6H4)SiFMe2. Z Anorg Allg Chem 1990. [DOI: 10.1002/zaac.19905900108] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Saleem AM, Hodali HA. Synthesis and Reactions of some Phenyl Derivatives of Platinum(II). ACTA ACUST UNITED AC 1990. [DOI: 10.1080/00945719008048624] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Heterodinuclear nitrosyl complexes Part 3. New organometallic nitrosyls of iridium(III) and platinum. Inorganica Chim Acta 1990. [DOI: 10.1016/s0020-1693(00)83204-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Alcohol complexes of platinum(II). Syntheses and crystal structures of [S-(R*,R*)]-(+)589-[Pt(OSO2CF3)2[1,2-C6H4 (PMePh)2] and [S-(R*,R*)]-(+)589-[Pt(HOCH2CH2OH) [1,2-C6H4(PMePh)2](CF3SO3)2. ACTA ACUST UNITED AC 1990. [DOI: 10.1016/s0957-4166(00)82264-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Appleton TG, Berry RD, Hall JR, Neale DW. Displacement of norbornadiene (NBD) from Pt(CF3)2(NBD) by weak donor ligands L, and reactions of cis-Pt(CF3)2L2 with water and acids. J Organomet Chem 1989. [DOI: 10.1016/0022-328x(89)85349-5] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Ankianiec BC, Young G. Synthesis and spectroscopic characteristics of bis-[dimethyl(phenyl)silylmethyl]platinum(II) complexes with nitrogen donor ligands. Polyhedron 1989. [DOI: 10.1016/s0277-5387(00)86379-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Ghedini M, Neve F, Longeri M, Bruno MC. 3,6-bis(2′-pyridyl)pyridazine-based ligands. Synthesis and organometallic complexes of platinum(II). Inorganica Chim Acta 1988. [DOI: 10.1016/s0020-1693(00)90579-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Thomson S, Young G. Synthesis and spectroscopic characteristics of trimethylsilylmethylplatinum(II) complexes with η2 alkene, nitrogen and phosphorus and sulphur donor ligands. Polyhedron 1988. [DOI: 10.1016/s0277-5387(00)80710-x] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Ghedini M, Longeri M, Neve F. Platinum(II) dimethyl and diphenyl complexes with some bidiazines and 3,6-bis(2′-pyridyl)pyridazine. Inorganica Chim Acta 1987. [DOI: 10.1016/s0020-1693(00)81746-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Jain VK, Rao G, Jain L. The Organic Chemistry of Platinum(IV). ADVANCES IN ORGANOMETALLIC CHEMISTRY 1987. [DOI: 10.1016/s0065-3055(08)60027-1] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Bassan R, Bryars KH, Judd L, Platt AW, Pringle PG. Improved syntheses of [PtMe2(1,5-COD)]. Inorganica Chim Acta 1986. [DOI: 10.1016/s0020-1693(00)84506-5] [Citation(s) in RCA: 26] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Displacement of norbornadiene (NBD) from PtMe2(NBD) BY N-donors, dimethylsulfoxide, and cyanide, and reactions of cis-PtMe2L2 iodomethane. J Organomet Chem 1986. [DOI: 10.1016/0022-328x(86)80119-x] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Brune HA, Falck M, Hemmer R, Alt HG. Untersuchungen über den Mechanismus der reduktiven Eliminierung des Biphenyl-;Systems auscis-Diphenylbis-(triphenylphosphan)platin(II)-Verbindungen: Einfluß der Elektronendichten am Platin auf die Aktivierungsparameter. ACTA ACUST UNITED AC 1984. [DOI: 10.1002/cber.19841170903] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Elding LI, Kellenberger B, Venanzi LM. Transition Metal Complexes with Bidentate Ligands Spanningtrans-Positions. XII. Steric effects in the kinetics and mechanism of substitutions at hydride and methyl bisphosphine platinum (II) complexes. Helv Chim Acta 1983. [DOI: 10.1002/hlca.19830660607] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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