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Kulikovskaya NS, Ondar EE, Perepukhov AM, Kostyukovich AY, Novikov RA, Ananikov VP. Structure and Dynamic Rearrangements of the Pt 2dba 3 and Pd 2dba 3 Complexes in Solution. Inorg Chem 2024; 63:10527-10541. [PMID: 38813621 DOI: 10.1021/acs.inorgchem.4c00803] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2024]
Abstract
Although the tris(dibenzylideneacetone)diplatinum complex (Pt2dba3) is an important source of Pt(0) used in catalysis and materials science, its structure has not yet been fully elucidated. A thorough study of the three-dimensional structure of Pt2dba3 and its dynamic behavior in solution was carried out using NMR spectroscopy methods at a high field (600 MHz) and molecular modeling. The complex was shown to contain three dba ligands in the s-cis,s-trans, s-trans,s-cis, and s-trans,s-trans conformations, which are uniformly oriented around the Pt2 backbone. In solution, the Pt2dba3 and Pd2dba3 complexes undergo rapid dynamic rearrangements, as evidenced by the exchange between the signals of the olefin protons of various dba ligands in the EXSY NMR spectra. According to the experimental measurements, the activation energies of the rearrangements were estimated to be 19.9 ± 0.2 and 17.9 ± 0.2 kcal/mol for the platinum and palladium complexes, respectively. Three possible mechanisms for this chemical exchange process were considered within the framework of DFT calculations. According to the calculated data, M2dba3 complexes undergo fluxional isomerization involving successive rotations of the dihedral angles formed by the carbonyl group and the C═C bond. Dissociation of dba ligands does not occur within these processes.
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Affiliation(s)
- Natalia S Kulikovskaya
- Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Moscow 119991, Russia
| | - Evgeniia E Ondar
- Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Moscow 119991, Russia
| | - Alexander M Perepukhov
- Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Moscow 119991, Russia
| | | | - Roman A Novikov
- Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Moscow 119991, Russia
| | - Valentine P Ananikov
- Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Moscow 119991, Russia
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2
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Shimomoto H, Hayashi H, Aramasu K, Itoh T, Ihara E. Polymerization of Diazoacetates Initiated by the Pd( N-arylmaleimide)/NaBPh 4 System: Maleimide Insertion into a Pd–C Bond Preceding to Initiation Leading to Efficient α-Chain-End Functionalization of Poly(alkoxycarbonylmethylene)s. Macromolecules 2022. [DOI: 10.1021/acs.macromol.2c00508] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Hiroaki Shimomoto
- Department of Materials Science and Biotechnology, Graduate School of Science and Engineering, Ehime University, 3 Bunkyo-cho, Matsuyama 790-8577, Japan
| | - Hinano Hayashi
- Department of Materials Science and Biotechnology, Graduate School of Science and Engineering, Ehime University, 3 Bunkyo-cho, Matsuyama 790-8577, Japan
| | - Kyoka Aramasu
- Department of Materials Science and Biotechnology, Graduate School of Science and Engineering, Ehime University, 3 Bunkyo-cho, Matsuyama 790-8577, Japan
| | - Tomomichi Itoh
- Department of Materials Science and Biotechnology, Graduate School of Science and Engineering, Ehime University, 3 Bunkyo-cho, Matsuyama 790-8577, Japan
| | - Eiji Ihara
- Department of Materials Science and Biotechnology, Graduate School of Science and Engineering, Ehime University, 3 Bunkyo-cho, Matsuyama 790-8577, Japan
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3
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Shimomoto H, Ichihara S, Hayashi H, Itoh T, Ihara E. Polymerization of Alkyl Diazoacetates Initiated by Pd(Naphthoquinone)/Borate Systems: Dual Role of Naphthoquinones as Oxidant and Anionic Ligand for Generating Active Pd(II) Species. Macromolecules 2019. [DOI: 10.1021/acs.macromol.9b00857] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Hiroaki Shimomoto
- Department of Materials Science and Biotechnology, Graduate School of Science and Engineering, Ehime University, 3 Bunkyo-cho, Matsuyama 790-8577, Japan
| | - Shohei Ichihara
- Department of Materials Science and Biotechnology, Graduate School of Science and Engineering, Ehime University, 3 Bunkyo-cho, Matsuyama 790-8577, Japan
| | - Hinano Hayashi
- Department of Materials Science and Biotechnology, Graduate School of Science and Engineering, Ehime University, 3 Bunkyo-cho, Matsuyama 790-8577, Japan
| | - Tomomichi Itoh
- Department of Materials Science and Biotechnology, Graduate School of Science and Engineering, Ehime University, 3 Bunkyo-cho, Matsuyama 790-8577, Japan
| | - Eiji Ihara
- Department of Materials Science and Biotechnology, Graduate School of Science and Engineering, Ehime University, 3 Bunkyo-cho, Matsuyama 790-8577, Japan
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4
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Horak KT, Agapie T. Dioxygen Reduction by a Pd(0)–Hydroquinone Diphosphine Complex. J Am Chem Soc 2016; 138:3443-52. [DOI: 10.1021/jacs.5b12928] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Kyle T. Horak
- Division of Chemistry and
Chemical Engineering, California Institute of Technology, 1200 East
California Boulevard MC 127-72, Pasadena, California 91125, United States
| | - Theodor Agapie
- Division of Chemistry and
Chemical Engineering, California Institute of Technology, 1200 East
California Boulevard MC 127-72, Pasadena, California 91125, United States
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Nakaoka S, Murakami Y, Kataoka Y, Ura Y. Maleimide-assisted anti-Markovnikov Wacker-type oxidation of vinylarenes using molecular oxygen as a terminal oxidant. Chem Commun (Camb) 2016; 52:335-8. [DOI: 10.1039/c5cc06746d] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Arylacetaldehydes were successfully synthesized by anti-Markovnikov Wacker-type oxidation of vinylarenes using 1 atm O2 as a terminal oxidant.
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Affiliation(s)
- Sonoe Nakaoka
- Department of Chemistry
- Faculty of Science
- Nara Women's University
- Kitauoyanishi-machi, Nara
- Japan
| | - Yuka Murakami
- Department of Chemistry
- Faculty of Science
- Nara Women's University
- Kitauoyanishi-machi, Nara
- Japan
| | - Yasutaka Kataoka
- Department of Chemistry
- Faculty of Science
- Nara Women's University
- Kitauoyanishi-machi, Nara
- Japan
| | - Yasuyuki Ura
- Department of Chemistry
- Faculty of Science
- Nara Women's University
- Kitauoyanishi-machi, Nara
- Japan
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Xia Y, Miao Z, Wang F, Yao H, Cui M, Ma Y, Qi Z, Sun Y. Theoretical investigation on electronic structures and stability of the dinuclear palladium and platinum complexes. J Organomet Chem 2015. [DOI: 10.1016/j.jorganchem.2014.12.024] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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7
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Low valent palladium benzoquinone complexes bearing different spectator ligands. The versatile coordinative capability of benzoquinone. J Organomet Chem 2014. [DOI: 10.1016/j.jorganchem.2013.10.021] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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8
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DeShong P, E. Nytko F, H. Shukla K. Advances in Siloxane-Based Coupling Reactions: Novel 16-Electron Palladium(0) Tri-alkene Catalysts for Allyl-Aryl Coupling in Precursors to Amaryllidaceae Alkaloids. HETEROCYCLES 2014. [DOI: 10.3987/com-13-s(s)113] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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9
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Dong JJ, Fañanás-Mastral M, Alsters PL, Browne WR, Feringa BL. Palladium-Catalyzed Selective Anti-Markovnikov Oxidation of Allylic Esters. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201301809] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Dong JJ, Fañanás-Mastral M, Alsters PL, Browne WR, Feringa BL. Palladium-Catalyzed Selective Anti-Markovnikov Oxidation of Allylic Esters. Angew Chem Int Ed Engl 2013; 52:5561-5. [DOI: 10.1002/anie.201301809] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2013] [Indexed: 11/06/2022]
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11
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DeShong P, H. Shukla K. Advances in Siloxane-Based Coupling Reactions: Application of Palladium-Mediated Allyl-Aryl Coupling to the Synthesis of Pancratistatin Derivatives. The Formal Total Synthesis of (±)-7-Deoxypancratistatin. HETEROCYCLES 2012. [DOI: 10.3987/com-12-s(n)35] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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12
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Blank F, Vieth JK, Ruiz J, Rodríguez V, Janiak C. η5-Cyclopentadienylpalladium(II) complexes: Synthesis, characterization and use for the vinyl addition polymerization of norbornene and the copolymerization with 5-vinyl-2-norbornene or 5-ethylidene-2-norbornene. J Organomet Chem 2011. [DOI: 10.1016/j.jorganchem.2010.08.050] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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13
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Kuninobu Y, Takai K. Organic reactions catalyzed by rhenium carbonyl complexes. Chem Rev 2010; 111:1938-53. [PMID: 21090810 DOI: 10.1021/cr100241u] [Citation(s) in RCA: 215] [Impact Index Per Article: 15.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Yoichiro Kuninobu
- Division of Chemistry and Biochemistry, Graduate School of Natural Science and Technology, Okayama University, Tsushima, Okayama 700-8530, Japan.
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Yamamoto Y. The First General and Selective Palladium(II)-Catalyzed Alkoxycarbonylation of Arylboronates: Interplay among Benzoquinone-Ligated Palladium(0) Complex, Organoboron, and Alcohol Solvent. Adv Synth Catal 2010. [DOI: 10.1002/adsc.200900836] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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15
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Scheuermann S, Sarkar B, Bolte M, Bats JW, Lerner HW, Wagner M. Single-Electron Transfer in Palladium Complexes of 1,4-Naphthoquinone-Containing Bis(pyrazol-1-yl)methane Ligands. Inorg Chem 2009; 48:9385-92. [DOI: 10.1021/ic9013015] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Sebastian Scheuermann
- Institut für Anorganische und Analytische Chemie, Goethe-Universität Frankfurt, Max-von-Laue-Strasse 7, D-60438 Frankfurt (Main), Germany
| | - Biprajit Sarkar
- Institut für Anorganische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
| | - Michael Bolte
- Institut für Anorganische und Analytische Chemie, Goethe-Universität Frankfurt, Max-von-Laue-Strasse 7, D-60438 Frankfurt (Main), Germany
| | - Jan W. Bats
- Institut für Organische Chemie, Goethe-Universität Frankfurt, Max-von-Laue-Strasse 7, D-60438 Frankfurt (Main), Germany
| | - Hans-Wolfram Lerner
- Institut für Anorganische und Analytische Chemie, Goethe-Universität Frankfurt, Max-von-Laue-Strasse 7, D-60438 Frankfurt (Main), Germany
| | - Matthias Wagner
- Institut für Anorganische und Analytische Chemie, Goethe-Universität Frankfurt, Max-von-Laue-Strasse 7, D-60438 Frankfurt (Main), Germany
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Takao T, Akiyoshi K, Suzuki H. Preparation and Properties of Diruthenium Hydrido Complexes Having a Bridging Benzoquinone Ligand: Formation of an Alcohol Adduct of a μ-η2:η2-Benzoquinone Complex through Hydrogen Bonding. Organometallics 2008. [DOI: 10.1021/om800363f] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Toshiro Takao
- Department of Applied Chemistry, Graduate School of Science and Engineering, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Kazunori Akiyoshi
- Department of Applied Chemistry, Graduate School of Science and Engineering, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Hiroharu Suzuki
- Department of Applied Chemistry, Graduate School of Science and Engineering, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro-ku, Tokyo 152-8552, Japan
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18
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Hilt G, Paul A, Harms K. Cobalt-catalyzed intermolecular [2 + 2 + 2] cycloaddition for the synthesis of 1,3-cyclohexadienes. J Org Chem 2008; 73:5187-90. [PMID: 18543967 DOI: 10.1021/jo800735x] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A cobalt(I)-catalyzed [2 + 2 + 2] cycloaddition reaction between an internal acceptor-substituted alkyne and a terminal alkene leads to the formation of regiochemically enriched polysubstituted 1,3-cyclohexadiene derivatives in acceptable yields when methyl butynoate is used, whereas regiochemically pure products are formed in good yields form phenyl propyonate. The concurrent cyclotrimerization reaction of the alkyne to the corresponding benzene derivative is dependent on the sterical bulk of the alkyne and is considerably reduced with the sterically more hindered alkyne.
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Affiliation(s)
- Gerhard Hilt
- Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Strasse, 35043 Marburg, Germany.
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19
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Shibata Y, Noguchi K, Hirano M, Tanaka K. Rhodium-Catalyzed Highly Enantio- and Diastereoselective Cotrimerization of Alkenes and Dialkyl Acetylenedicarboxylates Leading to Furylcyclopropanes. Org Lett 2008; 10:2825-8. [DOI: 10.1021/ol800966f] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yu Shibata
- Department of Applied Chemistry, Graduate School of Engineering, and Instrumentation Analysis Center, Tokyo University of Agriculture and Technology, Koganei, Tokyo 184-8588, Japan
| | - Keiichi Noguchi
- Department of Applied Chemistry, Graduate School of Engineering, and Instrumentation Analysis Center, Tokyo University of Agriculture and Technology, Koganei, Tokyo 184-8588, Japan
| | - Masao Hirano
- Department of Applied Chemistry, Graduate School of Engineering, and Instrumentation Analysis Center, Tokyo University of Agriculture and Technology, Koganei, Tokyo 184-8588, Japan
| | - Ken Tanaka
- Department of Applied Chemistry, Graduate School of Engineering, and Instrumentation Analysis Center, Tokyo University of Agriculture and Technology, Koganei, Tokyo 184-8588, Japan
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Wachtler H, Schuh W, Augner S, Hägele G, Wurst K, Peringer P. Syn−Anti Isomerization by Intramolecular Alkene Rotation: Study of the Dynamics of the Bicyclo[2.2.1]hept-2-ene Ligands in a Diplatinum(I) Complex and Its Lewis Acid Adducts. Organometallics 2008. [DOI: 10.1021/om7010547] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Helmuth Wachtler
- Institut für Allgemeine, Anorganische und Theoretische Chemie, Universität Innsbruck, Innrain 52a, A-6020 Innsbruck, Austria, and Institut für Anorganische und Strukturchemie, Heinrich Heine Universität Düsseldorf, Universitätsstrasse 1, D-40225 Düsseldorf, Germany
| | - Walter Schuh
- Institut für Allgemeine, Anorganische und Theoretische Chemie, Universität Innsbruck, Innrain 52a, A-6020 Innsbruck, Austria, and Institut für Anorganische und Strukturchemie, Heinrich Heine Universität Düsseldorf, Universitätsstrasse 1, D-40225 Düsseldorf, Germany
| | - Sven Augner
- Institut für Allgemeine, Anorganische und Theoretische Chemie, Universität Innsbruck, Innrain 52a, A-6020 Innsbruck, Austria, and Institut für Anorganische und Strukturchemie, Heinrich Heine Universität Düsseldorf, Universitätsstrasse 1, D-40225 Düsseldorf, Germany
| | - Gerhard Hägele
- Institut für Allgemeine, Anorganische und Theoretische Chemie, Universität Innsbruck, Innrain 52a, A-6020 Innsbruck, Austria, and Institut für Anorganische und Strukturchemie, Heinrich Heine Universität Düsseldorf, Universitätsstrasse 1, D-40225 Düsseldorf, Germany
| | - Klaus Wurst
- Institut für Allgemeine, Anorganische und Theoretische Chemie, Universität Innsbruck, Innrain 52a, A-6020 Innsbruck, Austria, and Institut für Anorganische und Strukturchemie, Heinrich Heine Universität Düsseldorf, Universitätsstrasse 1, D-40225 Düsseldorf, Germany
| | - Paul Peringer
- Institut für Allgemeine, Anorganische und Theoretische Chemie, Universität Innsbruck, Innrain 52a, A-6020 Innsbruck, Austria, and Institut für Anorganische und Strukturchemie, Heinrich Heine Universität Düsseldorf, Universitätsstrasse 1, D-40225 Düsseldorf, Germany
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Frech CM, Leitus G, Milstein D. Processes Involved in the Reduction of a Cyclometalated Palladium(II) Complex. Organometallics 2008. [DOI: 10.1021/om7008815] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Christian M. Frech
- Department of Inorganic Chemistry, University of Zurich, 8057 Zurich, Switzerland, and Department of Organic Chemistry and Department of Chemical Services, The Weizmann Institute of Science, Rehovot 76100, Israel
| | - Gregory Leitus
- Department of Inorganic Chemistry, University of Zurich, 8057 Zurich, Switzerland, and Department of Organic Chemistry and Department of Chemical Services, The Weizmann Institute of Science, Rehovot 76100, Israel
| | - David Milstein
- Department of Inorganic Chemistry, University of Zurich, 8057 Zurich, Switzerland, and Department of Organic Chemistry and Department of Chemical Services, The Weizmann Institute of Science, Rehovot 76100, Israel
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22
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Ozerov OV, Watson LA, Pink M, Caulton KG. Operationally Unsaturated Pincer/Rhenium Complexes Form Metal Carbenes from Cycloalkenes and Metal Carbynes from Alkanes. J Am Chem Soc 2007; 129:6003-16. [PMID: 17429964 DOI: 10.1021/ja062327r] [Citation(s) in RCA: 60] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Operationally unsaturated (i.e., 16/18-electron) (PNPR)Re(H)4, where PNPR is N(SiMe2CH2PR2)2, is reactive at 22 degrees C with cyclic olefins. The first observed products are generally (PNPR)Re(H)2(cycloalkylidene), with hydrogenated olefin as the product of hydrogen abstraction from the tetrahydride. The tetrahydride complex with R = tBu generally fails to react (too bulky), that with R = cyclohexyl suffers a (controllable) tendency to abstraction of 3H from one ring, forming an eta3-cyclohexenyl compound, and that with R = iPr generally gives the richest bimolecular reactivity. The cyclic monoolefins studied show distinct reactivity, C6 giving first the carbene and then coordinated cyclohexadiene, C5 giving carbene, then diene, and then eta5-C5H5, C8 giving carbene and then eta2-cyclooctyne, and C12 giving an eta3-allyl. Norbornene gives a pi-complex of the norbornene in thermal equilibrium with its carbene isomer; at 90 degrees C, hydrocarbon ligand Calpha-Cbeta bond cleavage occurs to give, for the first time, a carbyne complex from an internal olefin. Two compounds synthesized here have the formal composition "(PNPR)Re + olefin", and each of these is capable of dehydrogenating the methyl group of a variety of alkanes at 110 degrees C to form (PNP)ReH triple bond (CR).
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Affiliation(s)
- Oleg V Ozerov
- Department of Chemistry, Indiana University, Bloomington, Indiana 47405-7102, USA
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Roy AK. A Review of Recent Progress in Catalyzed Homogeneous Hydrosilation (Hydrosilylation). ADVANCES IN ORGANOMETALLIC CHEMISTRY 2007. [DOI: 10.1016/s0065-3055(07)55001-x] [Citation(s) in RCA: 166] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
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Zhao WG, Hua R. Highly Regioselective Rhenium-Catalyzed Hydrosilylation of Styrenes. European J Org Chem 2006. [DOI: 10.1002/ejoc.200600555] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Canovese L, Visentin F, Chessa G, Uguagliati P, Levi C, Dolmella A, Bandoli G. Role of the Ligand and of the Size and Flexibility of the Palladium−Ancillary Ligand Cycle on the Reactivity of Substituted Alkynes toward Palladium(0) Complexes Bearing Potentially Terdentate Nitrogen−Sulfur−Nitrogen or Nitrogen−Nitrogen−Nitrogen Ligands: Kinetic and Structural Study. Organometallics 2006. [DOI: 10.1021/om0604728] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Luciano Canovese
- Dipartimento di Chimica, Università di Venezia, Calle Larga Santa Marta 2137, 30123 Venezia, Italy, and Dipartimento di Scienze Farmaceutiche, Università di Padova, Via F. Marzolo 5, 35131 Padova, Italy
| | - Fabiano Visentin
- Dipartimento di Chimica, Università di Venezia, Calle Larga Santa Marta 2137, 30123 Venezia, Italy, and Dipartimento di Scienze Farmaceutiche, Università di Padova, Via F. Marzolo 5, 35131 Padova, Italy
| | - Gavino Chessa
- Dipartimento di Chimica, Università di Venezia, Calle Larga Santa Marta 2137, 30123 Venezia, Italy, and Dipartimento di Scienze Farmaceutiche, Università di Padova, Via F. Marzolo 5, 35131 Padova, Italy
| | - Paolo Uguagliati
- Dipartimento di Chimica, Università di Venezia, Calle Larga Santa Marta 2137, 30123 Venezia, Italy, and Dipartimento di Scienze Farmaceutiche, Università di Padova, Via F. Marzolo 5, 35131 Padova, Italy
| | - Carlo Levi
- Dipartimento di Chimica, Università di Venezia, Calle Larga Santa Marta 2137, 30123 Venezia, Italy, and Dipartimento di Scienze Farmaceutiche, Università di Padova, Via F. Marzolo 5, 35131 Padova, Italy
| | - Alessandro Dolmella
- Dipartimento di Chimica, Università di Venezia, Calle Larga Santa Marta 2137, 30123 Venezia, Italy, and Dipartimento di Scienze Farmaceutiche, Università di Padova, Via F. Marzolo 5, 35131 Padova, Italy
| | - Giuliano Bandoli
- Dipartimento di Chimica, Università di Venezia, Calle Larga Santa Marta 2137, 30123 Venezia, Italy, and Dipartimento di Scienze Farmaceutiche, Università di Padova, Via F. Marzolo 5, 35131 Padova, Italy
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Reingold JA, Uk Son S, Bok Kim S, Dullaghan CA, Oh M, Frake PC, Carpenter GB, Sweigart DA. π-Bonded quinonoid transition-metal complexes. Dalton Trans 2006:2385-98. [PMID: 16705337 DOI: 10.1039/b602678h] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Coordination of the carbocyclic ring of hydroquinones to electrophilic transition-metal fragments such as Mn(CO)3+ and Rh(COD)+ produces stable pi-bonded eta6-complexes that are activated to facile reversible deprotonation of the -OH groups. The deprotonations are accompanied by electron transfer to the transition metal, which acts as an internal oxidizing agent or electron sink. With manganese as the metal, the resulting eta5-semiquinone and eta4-quinone complexes have been used to synthesize one- two- and three-dimensional polymeric metal-organometallic coordination networks. With rhodium as the metal, the pi-quinonoid complexes have been demonstrated to play a unique role in multifunctional C-C coupling catalysis and in the synthesis of new organolithium reagents. Both classes of pi-quinonoid complexes appear to have significant applications in nanochemistry by providing an excellent vehicle for templating the directed self-assembly of nanoparticles into functional materials.
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Li Z, Liu L, Fu Y, Guo QX. Assessing performance of diverse ONIOM methods in calculation of structures of organonickel and organopalladium compounds. ACTA ACUST UNITED AC 2005. [DOI: 10.1016/j.theochem.2005.07.014] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Hirsekorn KF, Veige AS, Marshak MP, Koldobskaya Y, Wolczanski PT, Cundari TR, Lobkovsky EB. Thermodynamics, Kinetics, and Mechanism of (silox)3M(olefin) to (silox)3M(alkylidene) Rearrangements (silox = tBu3SiO; M = Nb, Ta). J Am Chem Soc 2005; 127:4809-30. [PMID: 15796547 DOI: 10.1021/ja046180k] [Citation(s) in RCA: 76] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Olefin complexes (silox)(3)M(ole) (silox = (t)Bu(3)SiO; M = Nb (1-ole), Ta (2-ole); ole = C(2)H(4), C(2)H(3)Me, C(2)H(3)Et, C(2)H(3)C(6)H(4)-p-X (X = OMe, H, CF(3)), C(2)H(3)(t)Bu, (c)C(5)H(8), (c)C(6)H(10), (c)C(7)H(10) (norbornene)) rearrange to alkylidene isomers (silox)(3)M(alk) (M = Nb (1=alk), Ta (2=alk); alk = CHMe, CHEt, CH(n)Pr, CHCH(2)C(6)H(4)-p-X (X = OMe, H, CF(3) (Ta only)), CHCH(2)(t)Bu, (c)C(5)H(8), (c)C(6)H(10), (c)C(7)H(10) (norbornylidene)). Kinetics and labeling experiments suggest that the rearrangement proceeds via a delta-abstraction on a silox CH bond by the beta-olefin carbon to give (silox)(2)RM(kappa(2)-O,C-OSi(t)Bu(2)CMe(2)CH(2)) (M = Nb (4-R), Ta (6-R); R = Me, Et, (n)Pr, (n)Bu, CH(2)CH(2)C(6)H(4)-p-X (X = OMe, H, CF(3) (Ta only)), CH(2)CH(2)(t)Bu, (c)C(5)H(9), (c)C(6)H(11), (c)C(7)H(11) (norbornyl)). A subsequent alpha-abstraction by the cylometalated "arm" of the intermediate on an alpha-CH bond of R generates the alkylidene 1=alk or 2=alk. Equilibrations of 1-ole with ole' to give 1-ole' and ole, and relevant calculations on 1-ole and 2-ole, permit interpretation of all relative ground and transition state energies for the complexes of either metal.
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Affiliation(s)
- Kurt F Hirsekorn
- Department of Chemistry and Chemical Biology, Baker Laboratory, Cornell University, Ithaca, NY 14853, USA
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Frech CM, Shimon LJW, Milstein D. Redox-Induced Collapse and Regeneration of a Pincer-Type Complex Framework: A Nonplanar Coordination Mode of Palladium(II). Angew Chem Int Ed Engl 2005; 44:1709-11. [PMID: 15712307 DOI: 10.1002/anie.200462386] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Christian M Frech
- Department of Organic Chemistry, Weizmann Institute of Science, 76100 Rehovot, Israel
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Frech CM, Shimon LJW, Milstein D. Redox-Induced Collapse and Regeneration of a Pincer-Type Complex Framework: A Nonplanar Coordination Mode of Palladium(II). Angew Chem Int Ed Engl 2005. [DOI: 10.1002/ange.200462386] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Markó I, Stérin S, Buisine O, Berthon G, Michaud G, Tinant B, Declercq JP. Highly Active and Selective Platinum(0)-Carbene Complexes. Efficient, Catalytic Hydrosilylation of Functionalised Olefins. Adv Synth Catal 2004. [DOI: 10.1002/adsc.200404048] [Citation(s) in RCA: 102] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Yamamoto Y, Kuwabara S, Ando Y, Nagata H, Nishiyama H, Itoh K. Palladium(0)-Catalyzed Cyclization of Electron-Deficient Enynes and Enediynes. J Org Chem 2004; 69:6697-705. [PMID: 15387592 DOI: 10.1021/jo049072p] [Citation(s) in RCA: 60] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
In the presence of a Pd(0) precatalyst, Pd2(bq)2(nbe)2 or Pd2(dba)3, 1,6-enyne esters were heated in refluxing benzene to give cyclodimers as single regioisomers. On the other hand, the combination of the Pd(0) precatalyst and triphenyl phosphite gave rise to various cycloisomerization products depending on the substitution pattern of the enyne esters. Six-membered ring cycloisomerization products were predominantly obtained from enyne esters bearing methallyl or 2-phenyl-2-propenyl moieties, while other enyne esters afforded normal five-membered ring cycloisomerization products. Intramolecular [2 + 2 + 2] cyclocotrimerization of enediyne esters also proceeded in the presence of the Pd(0) precatalyst and triphenylphosphine to give fused cyclohexadienes.
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Affiliation(s)
- Yoshihiko Yamamoto
- Department of Applied Chemistry, Graduate School of Engineering, Nagoya University, Chikusa, Nagoya 464-8603, Japan.
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Sprengers JW, Agerbeek MJ, Elsevier CJ, Kooijman H, Spek AL. Synthesis and Crystal Structures of Zerovalent Platinum η2-Fumarate Bis(norbornene) Complexes and Their Application as Hydrosilylation Catalysts. Organometallics 2004. [DOI: 10.1021/om049913i] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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