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Nebra N. High-Valent Ni III and Ni IV Species Relevant to C-C and C-Heteroatom Cross-Coupling Reactions: State of the Art. Molecules 2020; 25:molecules25051141. [PMID: 32143336 PMCID: PMC7179250 DOI: 10.3390/molecules25051141] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2020] [Revised: 02/25/2020] [Accepted: 02/26/2020] [Indexed: 11/16/2022] Open
Abstract
Ni catalysis constitutes an active research arena with notable applications in diverse fields. By analogy with its parent element palladium, Ni catalysts provide an appealing entry to build molecular complexity via cross-coupling reactions. While Pd catalysts typically involve a M0/MII redox scenario, in the case of Ni congeners the mechanistic elucidation becomes more challenging due to their innate properties (like enhanced reactivity, propensity to undergo single electron transformations vs. 2e− redox sequences or weaker M–Ligand interaction). In recent years, mechanistic studies have demonstrated the participation of high-valent NiIII and NiIV species in a plethora of cross-coupling events, thus accessing novel synthetic schemes and unprecedented transformations. This comprehensive review collects the main contributions effected within this topic, and focuses on the key role of isolated and/or spectroscopically identified NiIII and NiIV complexes. Amongst other transformations, the resulting NiIII and NiIV compounds have efficiently accomplished: i) C–C and C–heteroatom bond formation; ii) C–H bond functionalization; and iii) N–N and C–N cyclizative couplings to forge heterocycles.
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Affiliation(s)
- Noel Nebra
- Laboratoire Hétérochimie Fondamentale et Appliquée, Université Paul Sabatier/CNRS UMR 5069, 118 Route de Narbonne, 31062 Toulouse, France
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Kai W, Qian H, Liu D, Ye Z. NCN-Pincer palladium complexes immobilized on MCM-41 molecular sieve: Application in α-arylation reactions. MOLECULAR CATALYSIS 2019. [DOI: 10.1016/j.mcat.2018.10.024] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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3
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Valdés H, González-Sebastián L, Morales-Morales D. Aromatic para-functionalized NCN pincer compounds. J Organomet Chem 2017. [DOI: 10.1016/j.jorganchem.2017.05.034] [Citation(s) in RCA: 58] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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4
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Synthesis, characterization, X-ray crystallography analysis and kinetic study of tris(2-(4-trifluoromethylbenzylideneamino)ethyl)amine copper derivatives. Polyhedron 2016. [DOI: 10.1016/j.poly.2015.09.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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5
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Rühlig K, Mothes R, Aliabadi A, Kataev V, Büchner B, Buschbeck R, Rüffer T, Lang H. CuII bis(oxamato) end-grafted poly(amidoamine) dendrimers. Dalton Trans 2016; 45:7960-79. [DOI: 10.1039/c5dt03416g] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
“Magneto-dendrimers” comprising up to ten endgrafted {Cu3(3,4-bopb)(pmdta)2}2− complex fragments have been synthesized to determine their magnetic properties.
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Affiliation(s)
- Karoline Rühlig
- Technische Universität Chemnitz
- Faculty of Natural Sciences
- Institute of Chemistry
- Inorganic Chemistry
- 09107 Chemnitz
| | - Robert Mothes
- Technische Universität Chemnitz
- Faculty of Natural Sciences
- Institute of Chemistry
- Inorganic Chemistry
- 09107 Chemnitz
| | - Azar Aliabadi
- Leibniz Institute for Solid State and Materials Research IFW Dresden
- 01069 Dresden
- Germany
| | - Vladislav Kataev
- Leibniz Institute for Solid State and Materials Research IFW Dresden
- 01069 Dresden
- Germany
| | - Bernd Büchner
- Leibniz Institute for Solid State and Materials Research IFW Dresden
- 01069 Dresden
- Germany
| | - Roy Buschbeck
- Technische Universität Chemnitz
- Faculty of Natural Sciences
- Institute of Chemistry
- Inorganic Chemistry
- 09107 Chemnitz
| | - Tobias Rüffer
- Technische Universität Chemnitz
- Faculty of Natural Sciences
- Institute of Chemistry
- Inorganic Chemistry
- 09107 Chemnitz
| | - Heinrich Lang
- Technische Universität Chemnitz
- Faculty of Natural Sciences
- Institute of Chemistry
- Inorganic Chemistry
- 09107 Chemnitz
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6
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Bussey KA, Cavalier AR, Connell JR, Mraz ME, Oshin KD, Pintauer T, Gray DL, Parkin S. Crystal structure of ortho-rhom-bic {bis-[(pyridin-2-yl)meth-yl](3,5,5,5-tetra-chloro-pent-yl)amine-κ(3) N,N',N''}chlorido-copper(II) perchlorate. Acta Crystallogr E Crystallogr Commun 2015; 71:847-51. [PMID: 26279883 PMCID: PMC4518935 DOI: 10.1107/s2056989015011792] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2015] [Accepted: 06/19/2015] [Indexed: 05/23/2024]
Abstract
In the title compound, [CuCl(C17H19Cl4N3)]ClO4, the Cu(II) ion adopts a distorted square-planar geometry defined by one chloride ligand and the three nitro-gen atoms from the bis-[(pyridin-2-yl)meth-yl](3,5,5,5-tetra-chloro-pent-yl)amine ligand. The perchlorate counter-ion is disordered over three sets of sites with refined occupancies 0.0634 (17), 0.221 (16) and 0.145 (7). In addition, the hetero-scorpionate arm of the bis-[(pyridin-2-yl)meth-yl](3,5,5,5-tetra-chloro-pent-yl)amine ligand is disordered over two sets of sites with refined occupancies 0.839 (2) and 0.161 (2). In the crystal, weak Cu⋯Cl inter-actions between symmetry-related mol-ecules create a dimerization with a chloride occupying the apical position of the square-pyramidal geometry typical of many copper(II) chloride hetero-scorpionate complexes.
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Affiliation(s)
- Katherine A. Bussey
- Department of Chemistry & Physics, Saint Mary’s College, Notre Dame, IN 46556, USA
| | - Annie R. Cavalier
- Department of Chemistry & Physics, Saint Mary’s College, Notre Dame, IN 46556, USA
| | - Jennifer R. Connell
- Department of Chemistry & Physics, Saint Mary’s College, Notre Dame, IN 46556, USA
| | - Margaret E. Mraz
- Department of Chemistry & Physics, Saint Mary’s College, Notre Dame, IN 46556, USA
| | - Kayode D. Oshin
- Department of Chemistry & Physics, Saint Mary’s College, Notre Dame, IN 46556, USA
| | - Tomislav Pintauer
- Department of Chemistry & Biochemistry, Duquesne University, Pittsburgh, PA, 15282, USA
| | - Danielle L. Gray
- School of Chemical Sciences, University of Illinois, Urbana-Champaign, IL 61801, USA
| | - Sean Parkin
- Department of Chemistry, University of Kentucky, Lexington, KY 40506, USA
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7
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Yakhvarov DG, Khusnuriyalova AF, Sinyashin OG. Electrochemical Synthesis and Properties of Organonickel σ-Complexes. Organometallics 2014. [DOI: 10.1021/om500100q] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Dmitry G. Yakhvarov
- A. E. Arbuzov Institute
of Organic and Physical
Chemistry, Kazan Scientific Centre of the Russian Academy of Sciences, Arbuzov str. 8, 420088 Kazan, Russian Federation
- Kazan Federal University, Kremlyovskaya
str. 18, 420008 Kazan, Russian Federation
| | | | - Oleg G. Sinyashin
- A. E. Arbuzov Institute
of Organic and Physical
Chemistry, Kazan Scientific Centre of the Russian Academy of Sciences, Arbuzov str. 8, 420088 Kazan, Russian Federation
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9
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Kung MC, Riofski MV, Missaghi MN, Kung HH. Organosilicon platforms: bridging homogeneous, heterogeneous, and bioinspired catalysis. Chem Commun (Camb) 2014; 50:3262-76. [DOI: 10.1039/c3cc48766k] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Organosilicon compounds form versatile structures such as cubic metallasiloxanes, cage-like silsesquioxanes, macromolecular nanocages, and flexible dendrimers and linear metallasiloxanes, and are useful as catalysts, ligands for metal complexes, and catalyst supports.
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Affiliation(s)
- Mayfair C. Kung
- Department of Chemical and Biological Engineering
- Northwestern University
- Evanston, USA
| | - Mark V. Riofski
- Department of Chemical and Biological Engineering
- Northwestern University
- Evanston, USA
| | - Michael N. Missaghi
- Department of Chemical and Biological Engineering
- Northwestern University
- Evanston, USA
| | - Harold H. Kung
- Department of Chemical and Biological Engineering
- Northwestern University
- Evanston, USA
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10
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Yazerski VA, Orue A, Evers T, Kleijn H, Klein Gebbink RJM. Molecularly enlarged S,S-BnTsDPEN ligands for iron-catalyzed asymmetric olefin epoxidation reactions using hydrogen peroxide. Catal Sci Technol 2013. [DOI: 10.1039/c3cy00484h] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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11
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Choi SK, Thomas TP, Leroueil P, Kotlyar A, Van Der Spek AFL, Baker JR. Specific and cooperative interactions between oximes and PAMAM dendrimers as demonstrated by (1)H NMR study. J Phys Chem B 2012; 116:10387-97. [PMID: 22871033 DOI: 10.1021/jp305867v] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Oximes are important in the treatment of organophosphate (OP) poisoning, but have limited biological half-lives. Complexing these drugs with a macromolecule, such as a dendrimer, could improve their pharmacokinetics. The present study investigates the intermolecular interactions that drive the complexation of oxime-based drug molecules with fifth generation poly(amidoamine) (PAMAM) dendrimers. We performed steady-state binding studies of two molecules, pralidoxime and obidoxime, employing multiple NMR methods, including 1D titration, (1)H-(1)H 2D spectroscopy (COSY, NOESY), and (1)H diffusion-ordered spectroscopy (DOSY). Several important insights were gained in understanding the host-guest interactions occurring between the drug molecules and the polymer. First, the guest molecules bind to the dendrimer macromolecule through a specific interaction rather than through random, hydrophobic encapsulation. Second, this specificity is driven primarily by the electrostatic or H-bond interaction of the oxime at a dendrimer amine site. Also, the average strength for each drug and dendrimer interaction is affected by the surface modification of the polymer. Third, individual binding events between oximes and a dendrimer have a negative cooperative effect on subsequent oxime binding. In summary, this report provides a novel perspective important for designing host systems for drug delivery.
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Affiliation(s)
- Seok Ki Choi
- Department of Internal Medicine, Michigan Nanotechnology Institute for Medicine and Biological Sciences , ‡Department of Biomedical Engineering, and §Department of Anesthesiology, University of Michigan , Ann Arbor, Michigan 48109, United States
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12
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Tomalia DA. Dendritic effects: dependency of dendritic nano-periodic property patterns on critical nanoscale design parameters (CNDPs). NEW J CHEM 2012. [DOI: 10.1039/c1nj20501c] [Citation(s) in RCA: 135] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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13
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Muñoz‐Molina JM, Belderrain TR, Pérez PJ. Atom Transfer Radical Reactions as a Tool for Olefin Functionalization – On the Way to Practical Applications. Eur J Inorg Chem 2011. [DOI: 10.1002/ejic.201100379] [Citation(s) in RCA: 103] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- José María Muñoz‐Molina
- Laboratorio de Catálisis Homogénea, Departamento de Química y Ciencia de los Materiales, Unidad Asociada al CSIC, Centro de Investigación en Química Sostenible (CIQSO), Campus de El Carmen s/n, Universidad de Huelva, 21007 Huelva, Spain
| | - Tomás R. Belderrain
- Laboratorio de Catálisis Homogénea, Departamento de Química y Ciencia de los Materiales, Unidad Asociada al CSIC, Centro de Investigación en Química Sostenible (CIQSO), Campus de El Carmen s/n, Universidad de Huelva, 21007 Huelva, Spain
| | - Pedro J. Pérez
- Laboratorio de Catálisis Homogénea, Departamento de Química y Ciencia de los Materiales, Unidad Asociada al CSIC, Centro de Investigación en Química Sostenible (CIQSO), Campus de El Carmen s/n, Universidad de Huelva, 21007 Huelva, Spain
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14
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Choi SK, Leroueil P, Li MH, Desai A, Zong H, Van Der Spek AFL, Baker JR. Specificity and Negative Cooperativity in Dendrimer–Oxime Drug Complexation. Macromolecules 2011. [DOI: 10.1021/ma200522m] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Seok Ki Choi
- Michigan Nanotechnology Institute for Medicine and Biological Sciences and Department of Internal Medicine, ‡Department of Biomedical Engineering, and §Department of Anesthesiology, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Pascale Leroueil
- Michigan Nanotechnology Institute for Medicine and Biological Sciences and Department of Internal Medicine, ‡Department of Biomedical Engineering, and §Department of Anesthesiology, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Ming-Hsin Li
- Michigan Nanotechnology Institute for Medicine and Biological Sciences and Department of Internal Medicine, ‡Department of Biomedical Engineering, and §Department of Anesthesiology, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Ankur Desai
- Michigan Nanotechnology Institute for Medicine and Biological Sciences and Department of Internal Medicine, ‡Department of Biomedical Engineering, and §Department of Anesthesiology, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Hong Zong
- Michigan Nanotechnology Institute for Medicine and Biological Sciences and Department of Internal Medicine, ‡Department of Biomedical Engineering, and §Department of Anesthesiology, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Abraham F. L. Van Der Spek
- Michigan Nanotechnology Institute for Medicine and Biological Sciences and Department of Internal Medicine, ‡Department of Biomedical Engineering, and §Department of Anesthesiology, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - James R. Baker
- Michigan Nanotechnology Institute for Medicine and Biological Sciences and Department of Internal Medicine, ‡Department of Biomedical Engineering, and §Department of Anesthesiology, University of Michigan, Ann Arbor, Michigan 48109, United States
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15
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Natarajan B, Jayaraman N. Synthesis and studies of Rh(I) catalysts within and across poly(alkyl aryl ether) dendrimers. J Organomet Chem 2011. [DOI: 10.1016/j.jorganchem.2010.09.054] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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16
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Radicals in transition metal catalyzed reactions? transition metal catalyzed radical reactions?: a fruitful interplay anyway: part 3: catalysis by group 10 and 11 elements and bimetallic catalysis. Top Curr Chem (Cham) 2011; 320:323-451. [PMID: 22143611 DOI: 10.1007/128_2011_288] [Citation(s) in RCA: 73] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
This review summarizes the current status of transition metal catalyzed reactions involving radical intermediates in organic chemistry. This part focuses on radical-based methods catalyzed by group 10 and group 11 metal complexes. Reductive and redox-neutral C-C bond formations catalyzed by low-valent metal complexes as well as catalytic oxidative methods are reviewed. Catalytic processes which rely on the combination of two metal complexes are also covered.
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Tahara K, Shimakoshi H, Tanaka A, Hisaeda Y. Redox Behavior and Electrochemical Catalytic Function of B12–Hyperbranched Polymer. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2010. [DOI: 10.1246/bcsj.20100221] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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18
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19
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Affiliation(s)
- George R. Newkome
- Departments of Polymer Science and Chemistry, University of Akron, Akron, Ohio 44325-4717, and Department of Chemistry, Hiram College, Hiram, Ohio 44234
| | - Carol Shreiner
- Departments of Polymer Science and Chemistry, University of Akron, Akron, Ohio 44325-4717, and Department of Chemistry, Hiram College, Hiram, Ohio 44234
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20
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Chang SH, Scarfato A, Kleeberg C, Bröring M, Hoffmann G, Wiesendanger R. Adsorption behavior of asymmetric Pd pincer complexes on a Cu(111) surface. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:10868-10871. [PMID: 20441153 DOI: 10.1021/la100746a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
We address the adsorption of asymmetric Pd pincer complexes on a Cu(111) surface by scanning tunneling microscopy. The structural asymmetry is manifested in the observation of two chiral enantiomers. To enable an unambiguous identification of individual constituents, three closely related complexes with small modifications are investigated in parallel. Thereby, methyl substituents determine attractive molecule-molecule interaction. Depending on their distribution, dimerization and tetramerization can be observed.
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Affiliation(s)
- Shih-Hsin Chang
- Institute of Applied Physics and Microstructure Research Center Hamburg, University of Hamburg, Germany
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21
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Balili MNC, Pintauer T. Kinetic Studies of the Initiation Step in Copper Catalyzed Atom Transfer Radical Addition (ATRA) in the Presence of Free Radical Diazo Initiators as Reducing Agents. Inorg Chem 2010; 49:5642-9. [DOI: 10.1021/ic100540q] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Marielle Nicole C. Balili
- Duquesne University, Department of Chemistry and Biochemistry, 600 Forbes Avenue, 308 Mellon Hall, Pittsburgh, Pennsylvania 15282
| | - Tomislav Pintauer
- Duquesne University, Department of Chemistry and Biochemistry, 600 Forbes Avenue, 308 Mellon Hall, Pittsburgh, Pennsylvania 15282
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22
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Hourani R, Kakkar A. Advances in the Elegance of Chemistry in Designing Dendrimers. Macromol Rapid Commun 2010; 31:947-74. [DOI: 10.1002/marc.200900712] [Citation(s) in RCA: 87] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2009] [Revised: 11/12/2009] [Indexed: 11/09/2022]
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23
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Suijkerbuijk BMJM, Schamhart DJ, Kooijman H, Spek AL, van Koten G, Klein Gebbink RJM. Mono(NCN-pincer palladium)-metalloporphyrin catalysts: evidence for supramolecular bimetallic catalysis. Dalton Trans 2010; 39:6198-216. [DOI: 10.1039/b925236n] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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24
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Tahara K, Shimakoshi H, Tanaka A, Hisaeda Y. Synthesis, characterization and catalytic function of a B12-hyperbranched polymer. Dalton Trans 2010; 39:3035-42. [DOI: 10.1039/b923924c] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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25
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Mandal B, Ghosh P, Basu B. Recent Approaches Toward Solid Phase Synthesis of β-Lactams. HETEROCYCLIC SCAFFOLDS I 2010. [DOI: 10.1007/7081_2009_9] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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26
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Jayamurugan G, Jayaraman N. Increased Efficacies of an Individual Catalytic Site in Clustered Multivalent Dendritic Catalysts. Adv Synth Catal 2009. [DOI: 10.1002/adsc.200900377] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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27
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Subhani MA, Müller KS, Eilbracht P. Chiral Polyamino AlcoholsviaHydroaminomethylation: A New Class of Polyamines for Dendritic Cores and Ligand Precursors. Adv Synth Catal 2009. [DOI: 10.1002/adsc.200900267] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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28
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Schoeps D, Sashuk V, Ebert K, Plenio H. Solvent-Resistant Nanofiltration of Enlarged (NHC)Pd(allyl)Cl Complexes for Cross-Coupling Reactions. Organometallics 2009. [DOI: 10.1021/om900214j] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Dirk Schoeps
- Anorganische Chemie im Zintl-Institut, Technische Universität Darmstadt, Petersenstrasse 18, 64287 Darmstadt, Germany
| | - Volodymyr Sashuk
- Anorganische Chemie im Zintl-Institut, Technische Universität Darmstadt, Petersenstrasse 18, 64287 Darmstadt, Germany
| | - Katrin Ebert
- GKSS-Forschungszentrum Geesthacht GmbH, Institut für Polymerforschung, Max-Planck-Strasse 1, 21502 Geesthacht, Germany
| | - Herbert Plenio
- Anorganische Chemie im Zintl-Institut, Technische Universität Darmstadt, Petersenstrasse 18, 64287 Darmstadt, Germany
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Gaab M, Bellemin-Laponnaz S, Gade L. “Catalysis in a Tea Bag”: Synthesis, Catalytic Performance and Recycling of Dendrimer-Immobilised Bis- and Trisoxazoline Copper Catalysts. Chemistry 2009; 15:5450-62. [DOI: 10.1002/chem.200900504] [Citation(s) in RCA: 66] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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30
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Wieczorek B, Dijkstra HP, Egmond MR, Klein Gebbink RJ, van Koten G. Incorporating ECE-pincer metal complexes as functional building blocks in semisynthetic metalloenzymes, supramolecular polypeptide hybrids, tamoxifen derivatives, biomarkers and sensors. J Organomet Chem 2009. [DOI: 10.1016/j.jorganchem.2008.12.010] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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31
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Naka A, Matsumoto Y, Itano T, Hasegawa K, Shimamura T, Ohshita J, Kunai A, Takeuchi T, Ishikawa M. Nanosized starlike molecules. Synthesis and optical properties of tris- and tetrakis[oligo(disilanylenebithienylene)dimethylsilyl]benzene. J Organomet Chem 2009. [DOI: 10.1016/j.jorganchem.2008.10.053] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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32
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Kruithof CA, Dijkstra HP, Lutz M, Spek AL, Gebbink RJMK, van Koten G. X-Ray and NMR Study of the Structural Features of SCS-Pincer Metal Complexes of the Group 10 Triad. Organometallics 2008. [DOI: 10.1021/om800324w] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Cornelis A. Kruithof
- Chemical Biology and Organic Chemistry, Debye Institute for NanoMaterials Science, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH, Utrecht, The Netherlands, and Crystal and Structural Chemistry, Bijvoet Center for Biomolecular Research, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands
| | - Harmen P. Dijkstra
- Chemical Biology and Organic Chemistry, Debye Institute for NanoMaterials Science, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH, Utrecht, The Netherlands, and Crystal and Structural Chemistry, Bijvoet Center for Biomolecular Research, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands
| | - Martin Lutz
- Chemical Biology and Organic Chemistry, Debye Institute for NanoMaterials Science, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH, Utrecht, The Netherlands, and Crystal and Structural Chemistry, Bijvoet Center for Biomolecular Research, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands
| | - Anthony L. Spek
- Chemical Biology and Organic Chemistry, Debye Institute for NanoMaterials Science, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH, Utrecht, The Netherlands, and Crystal and Structural Chemistry, Bijvoet Center for Biomolecular Research, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands
| | - Robertus J. M. Klein Gebbink
- Chemical Biology and Organic Chemistry, Debye Institute for NanoMaterials Science, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH, Utrecht, The Netherlands, and Crystal and Structural Chemistry, Bijvoet Center for Biomolecular Research, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands
| | - Gerard van Koten
- Chemical Biology and Organic Chemistry, Debye Institute for NanoMaterials Science, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH, Utrecht, The Netherlands, and Crystal and Structural Chemistry, Bijvoet Center for Biomolecular Research, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands
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de Jesús E, Flores JC. Dendrimers: Solutions For Catalyst Separation and Recycling–A Review † Dedicated to the memory of Dr. José Antonio Delgado Oyagüe. Ind Eng Chem Res 2008. [DOI: 10.1021/ie800381d] [Citation(s) in RCA: 87] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ernesto de Jesús
- Departamento de Química Inorgánica, Universidad de Alcalá, Campus Universitario, 28871 Alcalá de Henares, Madrid, Spain
| | - Juan C. Flores
- Departamento de Química Inorgánica, Universidad de Alcalá, Campus Universitario, 28871 Alcalá de Henares, Madrid, Spain
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Döring K, Taher D, Walfort B, Lutz M, Spek AL, van Klink GP, van Koten G, Lang H. Linear homobimetallic 4-thioacetyl-substituted NCN pincer palladium(II) and platinum(II) complexes with N-bidentate connecting units (NCN=[C6H2(CH2NMe2)2-2,6-R-4]−). Inorganica Chim Acta 2008. [DOI: 10.1016/j.ica.2008.01.023] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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35
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Zaupa G, Scrimin P, Prins LJ. Origin of the Dendritic Effect in Multivalent Enzyme-Like Catalysts. J Am Chem Soc 2008; 130:5699-709. [DOI: 10.1021/ja7113213] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Giovanni Zaupa
- Department of Chemical Sciences, University of Padova, and ITM-CNR Padova section, Via Marzolo 1, 35131 Padova, Italy
| | - Paolo Scrimin
- Department of Chemical Sciences, University of Padova, and ITM-CNR Padova section, Via Marzolo 1, 35131 Padova, Italy
| | - Leonard J. Prins
- Department of Chemical Sciences, University of Padova, and ITM-CNR Padova section, Via Marzolo 1, 35131 Padova, Italy
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36
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Mehendale N, Sietsma JR, de Jong K, van Walree C, Gebbink RJK, van Koten G. PCP- and SCS-Pincer Palladium Complexes Immobilized on Mesoporous Silica: Application in CC Bond Formation Reactions. Adv Synth Catal 2007. [DOI: 10.1002/adsc.200700330] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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37
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Lu SM, Alper H. Synthesis of large ring macrocycles (12-18) by recyclable palladium-complexed dendrimers on silica gel catalyzed intramolecular cyclocarbonylation reactions. Chemistry 2007; 13:5908-16. [PMID: 17444546 DOI: 10.1002/chem.200601724] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Intramolecular cyclocarbonylation reactions with palladium-complexed dendrimers on silica gel as catalysts are very effective for the synthesis of twelve- to eighteen-membered ring macrocycles. This process can tolerate a wide variety of functional groups, including halide, ether, ketone, and ester. The heterogeneous dendritic catalysts facilitate excellent substrate reactivity, affording oxygen-, nitrogen-, or sulfur-containing tricyclic heterocycles in 70-92 % yields. Importantly, these systems are easily recovered by simple filtration and reused several times with only a slight loss of activity.
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Affiliation(s)
- Shui-Ming Lu
- Centre for Catalysis Research and Innovation, Department of Chemistry, University of Ottawa, Ottawa, Ontario, K1N 6N5, Canada
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38
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Thommes K, Içli B, Scopelliti R, Severin K. Atom-Transfer Radical Addition (ATRA) and Cyclization (ATRC) Reactions Catalyzed by a Mixture of [RuCl2Cp*(PPh3)] and Magnesium. Chemistry 2007; 13:6899-907. [PMID: 17546709 DOI: 10.1002/chem.200700442] [Citation(s) in RCA: 95] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
A new catalytic procedure for atom-transfer radical addition (ATRA) and cyclization (ATRC) reactions is described. The combination of the ruthenium(III) complex [RuCl(2)Cp*(PPh3)] (Cp*: pentamethylcyclopentadienyl) with magnesium allows these reactions to be performed under mild conditions with high efficiency. In most cases, the catalyst concentrations required are significantly lower than those used in previously reported procedures. It is suggested that magnesium acts as a reducing agent that generates and regenerates the catalytically active ruthenium(II) species. The precatalyst [RuCl(2)Cp*(PPh3)] has been analyzed by X-ray crystallography.
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Affiliation(s)
- Katrin Thommes
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland
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González-Campo A, Viñas C, Teixidor F, Núñez R, Sillanpää R, Kivekäs R. Modular Construction of Neutral and Anionic Carboranyl-Containing Carbosilane-Based Dendrimers. Macromolecules 2007. [DOI: 10.1021/ma070907i] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Arántzazu González-Campo
- Institut de Ciència de Materials, CSIC, Campus U.A.B., 08193 Bellaterra, Spain, Department of Chemistry, University of Jyväskylä, FIN-40351, Jyväskylä, Finland, and Department of Chemistry, P.O. Box 55, University of Helsinki, FIN-00014, Finland
| | - Clara Viñas
- Institut de Ciència de Materials, CSIC, Campus U.A.B., 08193 Bellaterra, Spain, Department of Chemistry, University of Jyväskylä, FIN-40351, Jyväskylä, Finland, and Department of Chemistry, P.O. Box 55, University of Helsinki, FIN-00014, Finland
| | - Francesc Teixidor
- Institut de Ciència de Materials, CSIC, Campus U.A.B., 08193 Bellaterra, Spain, Department of Chemistry, University of Jyväskylä, FIN-40351, Jyväskylä, Finland, and Department of Chemistry, P.O. Box 55, University of Helsinki, FIN-00014, Finland
| | - Rosario Núñez
- Institut de Ciència de Materials, CSIC, Campus U.A.B., 08193 Bellaterra, Spain, Department of Chemistry, University of Jyväskylä, FIN-40351, Jyväskylä, Finland, and Department of Chemistry, P.O. Box 55, University of Helsinki, FIN-00014, Finland
| | - Reijo Sillanpää
- Institut de Ciència de Materials, CSIC, Campus U.A.B., 08193 Bellaterra, Spain, Department of Chemistry, University of Jyväskylä, FIN-40351, Jyväskylä, Finland, and Department of Chemistry, P.O. Box 55, University of Helsinki, FIN-00014, Finland
| | - Raikko Kivekäs
- Institut de Ciència de Materials, CSIC, Campus U.A.B., 08193 Bellaterra, Spain, Department of Chemistry, University of Jyväskylä, FIN-40351, Jyväskylä, Finland, and Department of Chemistry, P.O. Box 55, University of Helsinki, FIN-00014, Finland
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Stol M, Snelders DJM, Godbole MD, Havenith RWA, Haddleton D, Clarkson G, Lutz M, Spek AL, van Klink GPM, van Koten G. 2,6-Bis(oxazolinyl)phenylnickel(II) Bromide and 2,6-Bis(ketimine)phenylnickel(II) Bromide: Synthesis, Structural Features, and Redox Properties. Organometallics 2007. [DOI: 10.1021/om061055y] [Citation(s) in RCA: 67] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Marianne Stol
- Organic Chemistry and Catalysis, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands, Dutch Polymer Institute, P.O. Box 902, 5600 AX Eindhoven, The Netherlands, Leiden Institute of Chemistry, Gorleaus Laboratories, Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands, Theoretical Chemistry Group, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands, Department of Chemistry, Warwick University, Coventry CV4 7Al, United Kingdom
| | - Dennis J. M. Snelders
- Organic Chemistry and Catalysis, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands, Dutch Polymer Institute, P.O. Box 902, 5600 AX Eindhoven, The Netherlands, Leiden Institute of Chemistry, Gorleaus Laboratories, Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands, Theoretical Chemistry Group, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands, Department of Chemistry, Warwick University, Coventry CV4 7Al, United Kingdom
| | - Meenal D. Godbole
- Organic Chemistry and Catalysis, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands, Dutch Polymer Institute, P.O. Box 902, 5600 AX Eindhoven, The Netherlands, Leiden Institute of Chemistry, Gorleaus Laboratories, Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands, Theoretical Chemistry Group, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands, Department of Chemistry, Warwick University, Coventry CV4 7Al, United Kingdom
| | - Remco W. A. Havenith
- Organic Chemistry and Catalysis, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands, Dutch Polymer Institute, P.O. Box 902, 5600 AX Eindhoven, The Netherlands, Leiden Institute of Chemistry, Gorleaus Laboratories, Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands, Theoretical Chemistry Group, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands, Department of Chemistry, Warwick University, Coventry CV4 7Al, United Kingdom
| | - David Haddleton
- Organic Chemistry and Catalysis, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands, Dutch Polymer Institute, P.O. Box 902, 5600 AX Eindhoven, The Netherlands, Leiden Institute of Chemistry, Gorleaus Laboratories, Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands, Theoretical Chemistry Group, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands, Department of Chemistry, Warwick University, Coventry CV4 7Al, United Kingdom
| | - Guy Clarkson
- Organic Chemistry and Catalysis, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands, Dutch Polymer Institute, P.O. Box 902, 5600 AX Eindhoven, The Netherlands, Leiden Institute of Chemistry, Gorleaus Laboratories, Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands, Theoretical Chemistry Group, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands, Department of Chemistry, Warwick University, Coventry CV4 7Al, United Kingdom
| | - Martin Lutz
- Organic Chemistry and Catalysis, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands, Dutch Polymer Institute, P.O. Box 902, 5600 AX Eindhoven, The Netherlands, Leiden Institute of Chemistry, Gorleaus Laboratories, Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands, Theoretical Chemistry Group, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands, Department of Chemistry, Warwick University, Coventry CV4 7Al, United Kingdom
| | - Anthony L. Spek
- Organic Chemistry and Catalysis, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands, Dutch Polymer Institute, P.O. Box 902, 5600 AX Eindhoven, The Netherlands, Leiden Institute of Chemistry, Gorleaus Laboratories, Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands, Theoretical Chemistry Group, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands, Department of Chemistry, Warwick University, Coventry CV4 7Al, United Kingdom
| | - Gerard P. M. van Klink
- Organic Chemistry and Catalysis, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands, Dutch Polymer Institute, P.O. Box 902, 5600 AX Eindhoven, The Netherlands, Leiden Institute of Chemistry, Gorleaus Laboratories, Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands, Theoretical Chemistry Group, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands, Department of Chemistry, Warwick University, Coventry CV4 7Al, United Kingdom
| | - Gerard van Koten
- Organic Chemistry and Catalysis, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands, Dutch Polymer Institute, P.O. Box 902, 5600 AX Eindhoven, The Netherlands, Leiden Institute of Chemistry, Gorleaus Laboratories, Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands, Theoretical Chemistry Group, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands, Department of Chemistry, Warwick University, Coventry CV4 7Al, United Kingdom
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41
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Hwang SH, Shreiner CD, Moorefield CN, Newkome GR. Recent progress and applications for metallodendrimers. NEW J CHEM 2007. [DOI: 10.1039/b612656c] [Citation(s) in RCA: 188] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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42
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Benito JM, de Jesús E, de la Mata FJ, Flores JC, Gómez R, Gómez-Sal P. Mononuclear and Dendritic Nickel(II) Complexes Containing N,N‘-Iminopyridine Chelating Ligands: Generation Effects on the Catalytic Oligomerization and Polymerization of Ethylene. Organometallics 2006. [DOI: 10.1021/om0509084] [Citation(s) in RCA: 86] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- José M. Benito
- Departamento de Química Inorgánica, Universidad de Alcalá, Campus Universitario, 28871 Alcalá de Henares, Madrid, Spain
| | - Ernesto de Jesús
- Departamento de Química Inorgánica, Universidad de Alcalá, Campus Universitario, 28871 Alcalá de Henares, Madrid, Spain
| | - F. Javier de la Mata
- Departamento de Química Inorgánica, Universidad de Alcalá, Campus Universitario, 28871 Alcalá de Henares, Madrid, Spain
| | - Juan C. Flores
- Departamento de Química Inorgánica, Universidad de Alcalá, Campus Universitario, 28871 Alcalá de Henares, Madrid, Spain
| | - Rafael Gómez
- Departamento de Química Inorgánica, Universidad de Alcalá, Campus Universitario, 28871 Alcalá de Henares, Madrid, Spain
| | - Pilar Gómez-Sal
- Departamento de Química Inorgánica, Universidad de Alcalá, Campus Universitario, 28871 Alcalá de Henares, Madrid, Spain
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43
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Ring closing metathesis employing organometallic substrates and the templated synthesis of macrocycles. ACTA ACUST UNITED AC 2006. [DOI: 10.1016/j.molcata.2006.01.071] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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44
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Berger A, Klein Gebbink RJM, van Koten G. Transition Metal Dendrimer Catalysts. TOP ORGANOMETAL CHEM 2006. [DOI: 10.1007/3418_030] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/07/2023]
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45
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Benito JM, de Jesús E, de la Mata FJ, Flores JC, Gómez R. Neutral and Cationic Dendritic Palladium(II) Complexes Containing N,N‘-Iminopyridine Chelating Ligands. Synthesis and Their Use for the Syndiospecific Copolymerization of CO/4-tert-Butylstyrene. Organometallics 2006. [DOI: 10.1021/om0601044] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- José M. Benito
- Departamento de Química Inorgánica, Universidad de Alcalá, Campus Universitario, 28871 Alcalá de Henares, Madrid, Spain
| | - Ernesto de Jesús
- Departamento de Química Inorgánica, Universidad de Alcalá, Campus Universitario, 28871 Alcalá de Henares, Madrid, Spain
| | - F. Javier de la Mata
- Departamento de Química Inorgánica, Universidad de Alcalá, Campus Universitario, 28871 Alcalá de Henares, Madrid, Spain
| | - Juan C. Flores
- Departamento de Química Inorgánica, Universidad de Alcalá, Campus Universitario, 28871 Alcalá de Henares, Madrid, Spain
| | - Rafael Gómez
- Departamento de Química Inorgánica, Universidad de Alcalá, Campus Universitario, 28871 Alcalá de Henares, Madrid, Spain
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Zuccaccia D, Busetto L, Cassani MC, Macchioni A, Mazzoni R. PGSE NMR Studies on DAB-Organo-Rhodium Dendrimers: Evaluation of the Molecular Size, Self-Aggregation Tendency, and Surface Metal Density. Organometallics 2006. [DOI: 10.1021/om0600240] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Daniele Zuccaccia
- Dipartimento di Chimica, Università di Perugia, Via Elce di Sotto, 8-06123 Perugia, Italy, and Dipartimento di Chimica Fisica ed Inorganica, Università di Bologna, Viale Risorgimento, 4-40136 Bologna, Italy
| | - Luigi Busetto
- Dipartimento di Chimica, Università di Perugia, Via Elce di Sotto, 8-06123 Perugia, Italy, and Dipartimento di Chimica Fisica ed Inorganica, Università di Bologna, Viale Risorgimento, 4-40136 Bologna, Italy
| | - M. Cristina Cassani
- Dipartimento di Chimica, Università di Perugia, Via Elce di Sotto, 8-06123 Perugia, Italy, and Dipartimento di Chimica Fisica ed Inorganica, Università di Bologna, Viale Risorgimento, 4-40136 Bologna, Italy
| | - Alceo Macchioni
- Dipartimento di Chimica, Università di Perugia, Via Elce di Sotto, 8-06123 Perugia, Italy, and Dipartimento di Chimica Fisica ed Inorganica, Università di Bologna, Viale Risorgimento, 4-40136 Bologna, Italy
| | - Rita Mazzoni
- Dipartimento di Chimica, Università di Perugia, Via Elce di Sotto, 8-06123 Perugia, Italy, and Dipartimento di Chimica Fisica ed Inorganica, Università di Bologna, Viale Risorgimento, 4-40136 Bologna, Italy
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Lu SM, Alper H. Intramolecular carbonylation reactions with recyclable palladium-complexed dendrimers on silica: synthesis of oxygen, nitrogen, or sulfur-containing medium ring fused heterocycles. J Am Chem Soc 2006; 127:14776-84. [PMID: 16231932 DOI: 10.1021/ja053650h] [Citation(s) in RCA: 112] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Palladium-complexed dendrimers supported on silica were evaluated as catalysts for intramolecular carbonylation reactions. The results showed that dendritic catalysts display high activity, affording oxygen, nitrogen, or sulfur-containing seven- or eight-membered ring fused heterocycles in excellent yields. Moreover, these catalysts have competitive advantages in that they can be easily recovered by simple filtration in air and reused for up to eight cycles with only a slight loss of activity.
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Affiliation(s)
- Shui-Ming Lu
- Centre for Catalysis Research and Innovation, Department of Chemistry, University of Ottawa, Ontario, Canada K1N 6N5
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Camerano JA, Casado MA, Ciriano MA, Oro LA. Tris(pyrazolyl)borate carbosilane dendrimers and metallodendrimers. Dalton Trans 2006:5287-93. [PMID: 17088968 DOI: 10.1039/b608558j] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A modified tris(pyrazolylborate) ligand has been prepared in two steps. First, reaction of triisopropylborate with allylmagnesium bromide and further treatment with benzoyl chloride gave CH(2) = CHCH(2)B(O(i)Pr), which was then reacted with potassium pyrazolate and pyrazole to give the compound K[CH(2) = CHCH(2)Bpz(3)]. The new allyl-containing scorpionate anion of acts as a bi- or tri-dentate ligand, as shown by the mononuclear complexes [CH(2) = CHCH(2)Bpz(3)M(LL)] (M = Rh, LL = nbd, ; LL = tfb, ; LL = (CO)(PPh(3)), ; M = Ir, LL = cod, ), obtained from reactions of the chlorido-bridged dinuclear complexes [{M(mu-Cl)(LL)}(2)] with 2. Furthermore, the borate represents a key material to achieve the attachment of tris(pyrazolyl)borate groups to the peripheries of carbosilane dendrimers. Thus, the platinum-catalyzed hydrosilylation reactions of compound with the dendritic cores Si[(CH(2))(3)SiMe(2)H](4) (G(0)-(SiH)(4)), (G(1)-(SiH)(8)), and (G(2)-(SiH)(16)) gave the corresponding borate-containing dendrimers Si[(CH(2))(3)SiMe(2)(CH(2))(3)B(O(i)Pr)(2)](4) (G(0)-B(4)), Si[(CH(2))(3)SiMe{(CH(2))(3)SiMe(2)(CH(2))(3)B(O(i)Pr)(2)}(2)](4) (G(1)-B(8)), and Si[(CH(2))(3)SiMe{(CH(2))(3)SiMe[(CH(2))(3)SiMe(2)(CH(2))(3)B(O(i)Pr)(2)](2)}(2)](4) (G(2)-B(16)) selectively in the anti-Markovnikov direction. Further reactions of G(0)-B(4), G(1)-B(8) and G(2)-B(16) with potassium pyrazolate and pyrazole rendered the corresponding polyanionic dendrimers K(4)[Si{(CH(2))(3)SiMe(2)(CH(2))(3)Bpz(3)}(4)] (G(0)-(Bpz(3))(4)), G(1)-(Bpz(3))(8), and G(2)-(Bpz(3))(16), respectively, which contain 4, 8, and 16 tris(pyrazolyl)borate groups symmetrically located around the dendritic peripheries. These unusual polyanionic dendrimers are excellent scaffolds to support metal centres, as shown by the reactions of G(0)-(Bpz(3))(4), G(1)-(Bpz(3))(8), and G(2)-(Bpz(3))(16) with [{Rh(mu-Cl)(nbd)}(2)] to give the neutral rhodadendrimers [Si{(CH(2))(3)SiMe(2)(CH(2))(3)Bpz(3)Rh(nbd)}(4)] G(0)-(Bpz(3)Rh)(4), G(1)-(Bpz(3)Rh)(8) and G(2)-(Bpz(3)Rh)(16) as stable solids in excellent yields. Following this protocol, mixed rhodium/iridium metallodendrimers can be prepared.
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Affiliation(s)
- José A Camerano
- Departamento de Química Inorgánica, Instituto de Ciencia de Materiales de Aragón, C.S.I.C.-Universidad de Zaragoza, E-50009 Zaragoza, Spain
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Reek JN, Arévalo S, van Heerbeek R, Kamer PC, van Leeuwen PW. Dendrimers in Catalysis. ADVANCES IN CATALYSIS 2006. [DOI: 10.1016/s0360-0564(05)49002-1] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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