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Hirano M, Machida S, Abe R, Mishina T, Komine N, Wu HL. Cross-Dimerization of 2,5-Dihydrofuran with Conjugated Dienes Catalyzed by (Chiral Diene)ruthenium(0) Complexes and Origins of the Enantioselectivity. Organometallics 2021. [DOI: 10.1021/acs.organomet.1c00368] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Masafumi Hirano
- Department of Applied Chemistry, Graduate School of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei, Tokyo 184-8588, Japan
| | - Shuhei Machida
- Department of Applied Chemistry, Graduate School of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei, Tokyo 184-8588, Japan
| | - Ryota Abe
- Department of Applied Chemistry, Graduate School of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei, Tokyo 184-8588, Japan
| | - Takuya Mishina
- Department of Applied Chemistry, Graduate School of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei, Tokyo 184-8588, Japan
| | - Nobuyuki Komine
- Department of Applied Chemistry, Graduate School of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei, Tokyo 184-8588, Japan
| | - Hsyueh-Liang Wu
- Department of Chemistry, National Taiwan Normal University, No.88, Section 4, Tingzhou Road, Taipei 11677, Taiwan
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Gray M, Hines MT, Parsutkar MM, Wahlstrom AJ, Brunelli NA, RajanBabu TV. Mechanism of Cobalt-Catalyzed Heterodimerization of Acrylates and 1,3-Dienes. A Potential Role of Cationic Cobalt(I) Intermediates. ACS Catal 2020; 10:4337-4348. [PMID: 32457820 DOI: 10.1021/acscatal.9b05455] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Coupling reactions of feedstock alkenes are promising, but few of these reactions are practiced industrially. Even though recent advances in the synthetic methodology have led to excellent regio- and enantioselectivies in the dimerization reactions between 1,3-dienes and acrylates, the efficiency as measured by the turnover numbers (TON) in the catalyst has remained modest. Through a combination of reaction progress kinetic analysis (RPKA) of a prototypical dimerization reaction, characterization of isolated low-valent cobalt catalyst precursors involved, several important details of the mechanism of this reaction have emerged. (i) The prototypical reaction has an induction period that requires at least two hours of stir time to generate the competent catalyst. (ii) Reduction of a Co(II) complex to a Co(I) complex, and subsequent generation of a cationic [Co(I)]+ species are responsible for this delay. (iii) Through RPKA using in situ IR spectroscopy, same excess experiments reveal inhibition by the product towards the end of the reaction and no catalyst deactivation is observed as long as diene is present in the medium. The low TON observed is most likely the result of the inherent instability of the putative cationic Co(I)-species that catalyzes the reaction. (iv) Different excess experiments suggest that the reaction is first order in the diene and zero order in the acrylate. (v) Catalyst loading experiments show that the catalyst is first order. The orders in the various regents were further confirmed by Variable Time Normalization Analysis (VTNA). (vi) A mechanism based on oxidative dimerization [via Co(I)/Co(III)-cycle] is proposed. Based on the results of this study, it is possible to increase the TON by a factor of 10 by conducting the reaction at an increased concentration of the starting materials, especially, the diene, which seems to stabilize the catalytic species.
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Affiliation(s)
- Montgomery Gray
- Department of Chemistry and Biochemistry, The Ohio State University, 100 W. 18th Avenue, Columbus, Ohio 43210, United States
| | - Michael T. Hines
- William G. Lowrie Department of Chemical and Biomolecular Engineering, The Ohio State University, 151 W. Woodruff, Columbus, Ohio 43210, United States
| | - Mahesh M. Parsutkar
- Department of Chemistry and Biochemistry, The Ohio State University, 100 W. 18th Avenue, Columbus, Ohio 43210, United States
| | - A. J. Wahlstrom
- William G. Lowrie Department of Chemical and Biomolecular Engineering, The Ohio State University, 151 W. Woodruff, Columbus, Ohio 43210, United States
| | - Nicholas A. Brunelli
- William G. Lowrie Department of Chemical and Biomolecular Engineering, The Ohio State University, 151 W. Woodruff, Columbus, Ohio 43210, United States
| | - T. V. RajanBabu
- Department of Chemistry and Biochemistry, The Ohio State University, 100 W. 18th Avenue, Columbus, Ohio 43210, United States
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3
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Affiliation(s)
- Masafumi Hirano
- Department of Applied Chemistry, Graduate School of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei, Tokyo 184-8588, Japan
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4
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Gallen A, Riera A, Verdaguer X, Grabulosa A. Coordination chemistry and catalysis with secondary phosphine oxides. Catal Sci Technol 2019. [DOI: 10.1039/c9cy01501a] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Review on synthesis, coordination chemistry and catalysis with secondary phosphine oxides.
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Affiliation(s)
- Albert Gallen
- Departament de Química Inorgànica i Orgànica
- Secció de Química Inorgànica
- Universitat de Barcelona
- Barcelona
- Spain
| | - Antoni Riera
- Institute for Research in Biomedicine (IRB-Barcelona)
- The Barcelona Institute of Science and Technology
- Barcelona 08028
- Spain
- Departament de Química Inorgànica i Orgànica
| | - Xavier Verdaguer
- Institute for Research in Biomedicine (IRB-Barcelona)
- The Barcelona Institute of Science and Technology
- Barcelona 08028
- Spain
- Departament de Química Inorgànica i Orgànica
| | - Arnald Grabulosa
- Departament de Química Inorgànica i Orgànica
- Secció de Química Inorgànica
- Universitat de Barcelona
- Barcelona
- Spain
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5
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Chen J, Guo J, Lu Z. Recent Advances in Hydrometallation of Alkenes and Alkynes via the First Row Transition Metal Catalysis. CHINESE J CHEM 2018. [DOI: 10.1002/cjoc.201800314] [Citation(s) in RCA: 227] [Impact Index Per Article: 37.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Jianhui Chen
- College of Chemistry and Materials Engineering; Wenzhou University; Wenzhou, Zhejiang 325035 China
- Department of chemistry; Zhejiang University; Hangzhou Zhejiang 310027 China
| | - Jun Guo
- Department of chemistry; Zhejiang University; Hangzhou Zhejiang 310027 China
| | - Zhan Lu
- Department of chemistry; Zhejiang University; Hangzhou Zhejiang 310027 China
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6
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Ushakov NV. Selective Hydrogenation of 5-Vinylnorborn-2-ene and Other Methods for the Synthesis of 2-Vinylnorbornane. RUSS J APPL CHEM+ 2018. [DOI: 10.1134/s1070427218050026] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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7
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Schall H, Fritz O, Schikora M, Elias J, Pritzkow H, Wadepohl H, Enders M. Bowl Shaped Monodentate Phosphines by Condensation of Imidazole Units with Boranes. Z Anorg Allg Chem 2018. [DOI: 10.1002/zaac.201800016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Helene Schall
- Institute of Inorganic Chemistry; Heidelberg University; Im Neuenheimer Feld 270 69120 Heidelberg Germany
| | - Olaf Fritz
- Institute of Inorganic Chemistry; Heidelberg University; Im Neuenheimer Feld 270 69120 Heidelberg Germany
| | - Margot Schikora
- Institute of Inorganic Chemistry; Heidelberg University; Im Neuenheimer Feld 270 69120 Heidelberg Germany
| | - Jana Elias
- Institute of Inorganic Chemistry; Heidelberg University; Im Neuenheimer Feld 270 69120 Heidelberg Germany
| | - Hans Pritzkow
- Institute of Inorganic Chemistry; Heidelberg University; Im Neuenheimer Feld 270 69120 Heidelberg Germany
| | - Hubert Wadepohl
- Institute of Inorganic Chemistry; Heidelberg University; Im Neuenheimer Feld 270 69120 Heidelberg Germany
| | - Markus Enders
- Institute of Inorganic Chemistry; Heidelberg University; Im Neuenheimer Feld 270 69120 Heidelberg Germany
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8
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Wu H, Li X, Tang X, Huang G. Mechanism and origins of chemo- and regioselectivities of (NHC)NiH-catalyzed cross-hydroalkenylation of vinyl ethers with α-olefins: a computational study. Org Chem Front 2018. [DOI: 10.1039/c8qo01020j] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Density functional theory calculations were performed to investigate the (NHC)NiH-catalyzed cross-hydroalkenylation of vinyl ethers with α-olefins.
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Affiliation(s)
- Hongli Wu
- Department of Chemistry
- School of Science and Tianjin Key Laboratory of Molecular Optoelectronic Sciences
- Tianjin University
- Tianjin 300072
- P. R. China
| | - Xiaojie Li
- Department of Chemistry
- School of Science and Tianjin Key Laboratory of Molecular Optoelectronic Sciences
- Tianjin University
- Tianjin 300072
- P. R. China
| | - Xiangyang Tang
- Department of Chemistry
- School of Science and Tianjin Key Laboratory of Molecular Optoelectronic Sciences
- Tianjin University
- Tianjin 300072
- P. R. China
| | - Genping Huang
- Department of Chemistry
- School of Science and Tianjin Key Laboratory of Molecular Optoelectronic Sciences
- Tianjin University
- Tianjin 300072
- P. R. China
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9
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Gao Y, Houk KN, Ho CY, Hong X. The mechanism and regioselectivities of (NHC)nickel(ii)hydride-catalyzed cycloisomerization of dienes: a computational study. Org Biomol Chem 2017; 15:7131-7139. [DOI: 10.1039/c7ob01494e] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Computation elucidates the mechanism and origins of regioselectivity of (NHC)Ni(ii)hydride-catalyzed cycloisomerization of dienes.
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Affiliation(s)
- Yuan Gao
- Department of Chemistry
- Zhejiang University
- Hangzhou
- China
| | - K. N. Houk
- Department of Chemistry and Biochemistry
- University of California
- Los Angeles
- USA
| | - Chun-Yu Ho
- Department of Chemistry
- Shenzhen Key Laboratory of Full Spectral Solar Electricity Generation (FSSEG)
- South University of Science and Technology of China (SUSTC)
- Shenzhen 518055
- P.R. China
| | - Xin Hong
- Department of Chemistry
- Zhejiang University
- Hangzhou
- China
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10
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Hong X, Wang J, Yang YF, He L, Ho CY, Houk KN. Computational Exploration of Mechanism and Selectivities of (NHC)Nickel(II)hydride-Catalyzed Hydroalkenylations of Styrene with α-Olefins. ACS Catal 2015. [DOI: 10.1021/acscatal.5b01075] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Xin Hong
- Department
of Chemistry and Biochemistry, University of California, Los Angeles, California 90095, United States
| | - Jinglin Wang
- Department
of Chemistry, South University of Science and Technology of China (SUSTC), Shenzhen 518055, P.R. China
| | - Yun-Fang Yang
- Department
of Chemistry and Biochemistry, University of California, Los Angeles, California 90095, United States
| | - Lisi He
- Shenzhen
Research Institute, The Chinese University of Hong Kong, Shatin NT, Hong Kong, P.R. China
| | - Chun-Yu Ho
- Department
of Chemistry, South University of Science and Technology of China (SUSTC), Shenzhen 518055, P.R. China
- Shenzhen
Research Institute, The Chinese University of Hong Kong, Shatin NT, Hong Kong, P.R. China
| | - K. N. Houk
- Department
of Chemistry and Biochemistry, University of California, Los Angeles, California 90095, United States
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Abstract
AbstractMetal-organophosphine complexes are very important candidates in homogeneous and heterogeneous catalysis. Many of the organophosphorus derivatives find applications in nanoscale material synthesis as important precursors. Phosphine complexes containing a variety of substituents exhibit tunable optical properties, which can be successfully applied in conjugation with nanoscale materials in solar-cell applications, photovoltaics, and the development of novel nanomaterials. In view of the emerging importance and potential applications of organophosphorus compounds, this review details the fundamental structural, synthetic, and spectroscopic characterization of organophosphines and their corresponding metal complexes. A special emphasis has been given to 31P{1H} and 1H nuclear magnetic resonance (NMR) spectroscopic analysis.
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Affiliation(s)
- Joe Gerald Jesu Raj
- 1Institut National de la Recherche Scientifique (INRS), Énergie, Matériaux et Télécommunications (EMT), Université du Québec, Varennes, Quebec, Canada J3X 1S2
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12
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Timsina YN, Biswas S, RajanBabu TV. Chemoselective reactions of (E)-1,3-dienes: cobalt-mediated isomerization to (Z)-1,3-dienes and reactions with ethylene. J Am Chem Soc 2014; 136:6215-8. [PMID: 24712838 PMCID: PMC4046774 DOI: 10.1021/ja501979g] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2014] [Indexed: 01/24/2023]
Abstract
In the asymmetric hydrovinylation (HV) of an E/Z-mixture of a prototypical 1,3-diene with (S,S)-(DIOP)CoCl2 or (S,S)-(BDPP)CoCl2 catalyst in the presence of Me3Al, the (E)-isomer reacts significantly faster, leaving behind the Z-isomer intact at the end of the reaction. The presumed [LCo-H](+)-intermediate, especially when L is a large-bite angle ligand, similar to DIOP and BDPP, promote an unusual isomerization of (E/Z)-mixtures of 1,3-dienes to isomerically pure Z-isomers. A mechanism that involves an intramolecular hydride addition via an [η(4)-(diene)(LCo-H)](+) complex, followed by π-σ-π isomerization of the intermediate Co(allyl) species, is proposed for this reaction.
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Affiliation(s)
- Yam N. Timsina
- Department
of Chemistry and Biochemistry, The Ohio
State University, Columbus, Ohio 43210, United
States
| | - Souvagya Biswas
- Department
of Chemistry and Biochemistry, The Ohio
State University, Columbus, Ohio 43210, United
States
| | - T. V. RajanBabu
- Department
of Chemistry and Biochemistry, The Ohio
State University, Columbus, Ohio 43210, United
States
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13
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Saini V, Stokes BJ, Sigman MS. Transition-metal-catalyzed laboratory-scale carbon-carbon bond-forming reactions of ethylene. Angew Chem Int Ed Engl 2013; 52:11206-20. [PMID: 24105881 PMCID: PMC3990188 DOI: 10.1002/anie.201303916] [Citation(s) in RCA: 84] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2013] [Indexed: 11/07/2022]
Abstract
Ethylene, the simplest alkene, is the most abundantly synthesized organic molecule by volume. It is readily incorporated into transition-metal-catalyzed carbon-carbon bond-forming reactions through migratory insertions into alkylmetal intermediates. Because of its D2h symmetry, only one insertion outcome is possible. This limits byproduct formation and greatly simplifies analysis. As described within this Minireview, many carbon-carbon bond-forming reactions incorporate a molecule (or more) of ethylene at ambient pressure and temperature. In many cases, a useful substituted alkene is incorporated into the product.
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Affiliation(s)
- Vaneet Saini
- Department of Chemistry, University of Utah, 315 South 1400 East, Room 2020, Salt Lake City, UT 84112 (USA)
| | - Benjamin J. Stokes
- Department of Chemistry, University of Utah, 315 South 1400 East, Room 2020, Salt Lake City, UT 84112 (USA)
| | - Matthew S. Sigman
- Department of Chemistry, University of Utah, 315 South 1400 East, Room 2020, Salt Lake City, UT 84112 (USA)
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Saini V, Stokes BJ, Sigman MS. Übergangsmetallkatalysierte C-C-Kupplungen mit Ethylen im Labormaßstab. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201303916] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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16
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Noyori R. Facts are the Enemy of Truth-Reflections on Serendipitous Discovery and Unforeseen Developments in Asymmetric Catalysis. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/anie.201205537] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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17
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Noyori R. Fakten sind der Feind der Wahrheit - Betrachtungen über Zufallsentdeckungen und ungeahnte Entwicklungen der asymmetrischen Katalyse. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201205537] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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18
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Wang QS, Xie JH, Li W, Zhu SF, Wang LX, Zhou QL. Ruthenium-catalyzed hydrovinylation of N-acetylenamines leading to amines with a quaternary carbon center. Org Lett 2011; 13:3388-91. [PMID: 21630689 DOI: 10.1021/ol201142v] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A catalytic hydrovinylation of N-acetylenamines with ethylene is reported. This new hydrovinylation reaction is catalyzed by a ruthenium hydride complex, RuHCl(CO)(PCy(3))(2), providing a series of N-acetylamines with a quaternary carbon center with up to 99% yield.
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Affiliation(s)
- Qiu-Shi Wang
- State Key Laboratory and Institute of Elemento-organic Chemistry, Nankai University, Tianjin 300071, China
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Abstract
The scope of Ni(II)-catalyzed hydrovinylation has been extended to strained alkenes such as heterobicyclic [2.2.1]heptanes and cylobutenes. Reactions involving the heterobicyclic compounds are rare examples for this class of compounds where the metal-catalyzed C-C bond-forming reactions proceed without a concomitant ring-opening process. While the enantioselectivity in these systems remains modest, hydrovinylation of endo-5,6--bis-benzyloxymethylbicyclo[2.2.1]hept-2-ene gives excellent yield (>90%) of the product with one of the highest enantioselectivities (95-99% ee) reported for a C-C bond-forming reaction of norbornenes.
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Affiliation(s)
- Wang Liu
- Department of Chemistry, The Ohio State University, 100 West 18th Avenue, Columbus, Ohio 43210, United States
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Affiliation(s)
- Dieter Vogt
- Laboratory of Homogeneous Catalysis, Schuit Institute of Catalysis, Eindhoven University of Technology, Den Dolech 2, Helix STW 4.34, The Netherlands.
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Roy D, Sunoj RB. Ni-, Pd-, or Pt-catalyzed ethylene dimerization: a mechanistic description of the catalytic cycle and the active species. Org Biomol Chem 2010; 8:1040-51. [DOI: 10.1039/b921492e] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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23
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Joseph J, Rajanbabu TV, Jemmis ED. A Theoretical Investigation of the Ni(II)-Catalyzed Hydrovinylation of Styrene. Organometallics 2009; 28:3552-3566. [PMID: 21532981 DOI: 10.1021/om900045p] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We report a detailed and full computational investigation on the hydrovinylation reaction of styrene with the Ni(II)-phospholane catalytic system, which was originally presumed to proceed through a cationic mechanism involving a nickel hydride intermediate. The following general features emerge from this study on a specific catalyst complex that was found to give quantitative yield and moderate selectivity: (a) the activation barrier for the initiation (18.8 kcal/mol) is higher than that for the reaction due to a low-lying square-planar pentenyl chelate intermediate originating from a Ni(II)-allyl catalyst precursor. Consequently there is an induction period for the catalysis; (b) the exit of product from the catalyst is via a β-H-transfer step instead of the usual β-H elimination pathway, which has a very high activation energy due to a trans effect of the phospholane ligand; (c) the turnover-limiting and enantio- determining transition state is also the β-H-transfer; (d) because of the absence of a hydride intermediate, the unwanted isomerization of the product is prevented; (e) since the enantio-discrimination is decided at the H-transfer stage itself, the configuration of the product in a catalytic cycle influences the enantioselectivity in the subsequent cycle; (f) the trans effect of the sole strong ligand in the d8 square-planar Ni(II), the stability of the η(3)-benzyl intermediate, and the availability of three coordination sites enable regioselective hydrovinylation over the possible oligomerization/polymerization of the olefin substrates and linear hydrovinylation. This work has also confirmed the previously recognized role of the hemilabile group at various stages in the mechanism.
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Affiliation(s)
- Jorly Joseph
- School of Chemistry, University of Hyderabad, Central University P. O., Hyderabad 500046, India, Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore 560012, India, Indian Institute of Science Education and Research, Thiruvananthapuram, CET Campus, Kerala 695016, India, and Department of Chemistry, The Ohio State University, 100 W. 18th Avenue, Columbus, Ohio 43210
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Benincori T, Marchesi A, Pilati T, Ponti A, Rizzo S, Sannicolò F. Chirality in the absence of rigid stereogenic elements: the design of configurationally stable C3-symmetric propellers. Chemistry 2009; 15:94-105. [PMID: 19072792 DOI: 10.1002/chem.200801505] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Residual stereoisomerism is a form of stereoisomerism scarcely considered so far for applicative purposes, though extremely interesting, since the production of stereoisomers does not involve classical rigid stereogenic elements. In three-bladed propeller-shaped molecules, a preferred stereomerization mechanism, related to the correlated rotation of the rings, allows the free interconversion of stereoisomers inside separated sets (the residual stereoisomers) that can interconvert through higher energy pathways. In light of possible future applications as chiral ligands for transition metals in stereoselective processes, some C(3)-symmetric phosphorus-centered propellers, which could exist as residual enantiomers, are synthesized and the possibility of resolving their racemates into residual antipodes is explored. While the tris(aryl)methanes are configurationally stable at room temperature, only selected tris(aryl)phosphane oxides display a configurational stability high enough to allow resolution by HPLC on a chiral stationary phase (CSP HPLC) at a semipreparative level at room temperature. Stability was evaluated through different techniques (circular dichroism (CD) signal decay, dynamic CSP HPLC (CSP DHPLC), dynamic NMR analysis (DNMR)) and the results compared and discussed. Phosphanes were found much less stable than the corresponding phosphane oxides, for which preliminary calculations suggest that the three-ring-flip enantiomerization mechanism (M(0)) would be easier than phosphorus pyramidal inversion. The parameters affecting the configurational stability of the residual enantiomers of C(3)-symmetric propellers are discussed.
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Affiliation(s)
- Tiziana Benincori
- Dipartimento di Scienze Chimiche ed Ambientali, Università dell'Insubria via Valleggio 11, 22100 Como, Italy
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Toti A, Giambastiani G, Bianchini C, Meli A, Luconi L. New Functionalized Vinyl Monomers by Ethylene-(Functionalized)-Norbornene Hetero-Trimerization Catalyzed by Cobalt(II)-(Imino)pyridine Complexes. Adv Synth Catal 2008. [DOI: 10.1002/adsc.200800201] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Erre G, Enthaler S, Junge K, Gladiali S, Beller M. Synthesis and application of chiral monodentate phosphines in asymmetric hydrogenation. Coord Chem Rev 2008. [DOI: 10.1016/j.ccr.2007.09.021] [Citation(s) in RCA: 100] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Brunner H. Enantioselective Synthesis of Organic Compounds with Optically Active Transition Metal Catalysts in Substoichiometric Quantities. TOPICS IN STEREOCHEMISTRY 2007. [DOI: 10.1002/9780470147276.ch3] [Citation(s) in RCA: 85] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Bianchini C, Giambastiani G, Meli A, Toti A. Diastereoselective Alkylation−Vinylation of Norbornene Catalyzed by a Tetrahedral Cobalt(II) Pyridinimine Complex. Organometallics 2007. [DOI: 10.1021/om070003l] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Claudio Bianchini
- Istituto di Chimica dei Composti Organometallici (ICCOM-CNR), Via Madonna del Piano 10, Sesto Fiorentino, 50019 Firenze, Italy
| | - Giuliano Giambastiani
- Istituto di Chimica dei Composti Organometallici (ICCOM-CNR), Via Madonna del Piano 10, Sesto Fiorentino, 50019 Firenze, Italy
| | - Andrea Meli
- Istituto di Chimica dei Composti Organometallici (ICCOM-CNR), Via Madonna del Piano 10, Sesto Fiorentino, 50019 Firenze, Italy
| | - Alessandro Toti
- Istituto di Chimica dei Composti Organometallici (ICCOM-CNR), Via Madonna del Piano 10, Sesto Fiorentino, 50019 Firenze, Italy
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Musierowicz S, Waszku°c WT. STERIC CONTROL OF THE P-CHIRAL GROUP IN GRIGNARD ADDITION TO THE CARBONYL GROUP OF α - KETOPHOSPHINE OXIDE. ACTA ACUST UNITED AC 2007. [DOI: 10.1080/03086647708079945] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Tunable phosphinite, phosphite and phosphoramidite ligands for the asymmetric hydrovinylation reactions. Tetrahedron 2005. [DOI: 10.1016/j.tet.2005.03.120] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Kumareswaran R, Nandi M, RajanBabu TV. Hydrovinylation of norbornene. Ligand-dependent selectivity and asymmetric variations. Org Lett 2004; 5:4345-8. [PMID: 14601996 DOI: 10.1021/ol0356284] [Citation(s) in RCA: 64] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
[reaction: see text] Norbornene undergoes Ni-catalyzed (1-2 mol% allylnickel bromide/phosphine/NaBARF or AgSbF(6), 1 bar ethylene, -50 degrees C) hydrovinylation (>97% yield), giving either a 1:1 or a 2:1 (norbornene/ethylene) adduct depending on the size of the phosphine. Use of binaphthol-derived phosphoramidite ligand results in up to 80% ee for the 1:1 adduct. The course of the reaction is highly dependent on the ligand (size and configuration of the appendages) and the counteranion present.
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Affiliation(s)
- Ramaiah Kumareswaran
- Department of Chemistry, 100 W. 18th Avenue, The Ohio State University, Columbus, Ohio 43210, USA
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RajanBabu TV, Nomura N, Jin J, Nandi M, Park H, Sun X. Heterodimerization of olefins. 1. Hydrovinylation reactions of olefins that are amenable to asymmetric catalysis. J Org Chem 2004; 68:8431-46. [PMID: 14575468 DOI: 10.1021/jo035171b] [Citation(s) in RCA: 86] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Through a systematic examination of ligand and counterion effects, new protocols for a nearly quantitative and highly selective codimerization of ethylene and various functionalized vinylarenes have been discovered. In a typical reaction, 4-bromostyrene and ethylene undergo codimerization in the presence of 0.0035 equiv each of [(allyl)NiBr]2, triphenylphosphine, and AgOTf in CH2Cl2 at -56 degrees C to give 3-(4-bromophenyl)-1-butene in >98% yield and selectivity. Corresponding reactions with [(allyl)PdX]2 are much less efficient and less selective and may require further optimization before a viable system can be identified. Another useful protocol that gives comparable yield and selectivity involves the use of a single-component catalyst prepared from allyl 2-diphenylphosphinobenzoate, Ni(COD)2, and (C6F5)3B. Recognition of a synergistic relationship between a chiral hemilabile ligand (for example, (R)-2-methoxy-2'-diphenylphosphino-1,1'-binaphthyl, MOP) and a highly dissociated counteranion (BARF or SbF6) in an enantioselective version of the Ni-catalyzed reaction raises the prospects of developing a practical route for the synthesis of 3-arylbutenes. Several pharmaceutically relevant compounds, including widely used 2-arylpropionic acids, can be synthesized from these key intermediates. This reaction appears to be quite general. Synthesis of several new 2-diphenylphosphino-1,1-binaphthyl derivatives, prepared to probe the effect of hemilabile coordination on the efficiency and selectivity of the reaction, are also described.
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Affiliation(s)
- T V RajanBabu
- Department of Chemistry, The Ohio State University, 100 W. 18th Avenue, Columbus, Ohio 43210, USA.
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Affiliation(s)
- T V RajanBabu
- Department of Chemistry, The Ohio State University, 100 West 18th Avenue, Columbus, OH 43210, USA
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Meneghetti MR, Grellier M, Pfeffer M, Dupont J, Fischer J. Synthesis of Configurationally Stable, Optically Active Organocobalt Compounds. Organometallics 1999. [DOI: 10.1021/om990517n] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Mario Roberto Meneghetti
- Laboratoire de Synthèses Métallo-Induites and Laboratoire de Cristallochimie et Chimie Structurale, UMR 7513 du CNRS, 4, rue Blaise Pascal, 67000 Strasbourg France, and Laboratory of Molecular Catalysis, IQ/UFRGS, Av. Bento Gonçalves, 9500-Porto Alegre, 91501-970 RS, Brazil
| | - Mary Grellier
- Laboratoire de Synthèses Métallo-Induites and Laboratoire de Cristallochimie et Chimie Structurale, UMR 7513 du CNRS, 4, rue Blaise Pascal, 67000 Strasbourg France, and Laboratory of Molecular Catalysis, IQ/UFRGS, Av. Bento Gonçalves, 9500-Porto Alegre, 91501-970 RS, Brazil
| | - Michel Pfeffer
- Laboratoire de Synthèses Métallo-Induites and Laboratoire de Cristallochimie et Chimie Structurale, UMR 7513 du CNRS, 4, rue Blaise Pascal, 67000 Strasbourg France, and Laboratory of Molecular Catalysis, IQ/UFRGS, Av. Bento Gonçalves, 9500-Porto Alegre, 91501-970 RS, Brazil
| | - Jairton Dupont
- Laboratoire de Synthèses Métallo-Induites and Laboratoire de Cristallochimie et Chimie Structurale, UMR 7513 du CNRS, 4, rue Blaise Pascal, 67000 Strasbourg France, and Laboratory of Molecular Catalysis, IQ/UFRGS, Av. Bento Gonçalves, 9500-Porto Alegre, 91501-970 RS, Brazil
| | - Jean Fischer
- Laboratoire de Synthèses Métallo-Induites and Laboratoire de Cristallochimie et Chimie Structurale, UMR 7513 du CNRS, 4, rue Blaise Pascal, 67000 Strasbourg France, and Laboratory of Molecular Catalysis, IQ/UFRGS, Av. Bento Gonçalves, 9500-Porto Alegre, 91501-970 RS, Brazil
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Agbossou F, Carpentier JF, Hapiot F, Suisse I, Mortreux A. The aminophosphine-phosphinites and related ligands: synthesis, coordination chemistry and enantioselective catalysis1Dedicated to the memory of Professor Francis Petit1. Coord Chem Rev 1998. [DOI: 10.1016/s0010-8545(98)00088-5] [Citation(s) in RCA: 85] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Chiral C3-symmetric ligands and their transition metal complexes. ACTA ACUST UNITED AC 1998. [DOI: 10.1016/s1874-5156(97)80009-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
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New homochiral ketoalcohols from aldol reactions of (+)-isomenthone and reversal of diastereoselectivity. Tetrahedron Lett 1997. [DOI: 10.1016/s0040-4039(97)10430-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Trost BM. Atomökonomische Synthesen – eine Herausforderung in der Organischen Chemie: die Homogenkatalyse als wegweisende Methode. Angew Chem Int Ed Engl 1995. [DOI: 10.1002/ange.19951070304] [Citation(s) in RCA: 560] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Andrews P, Corker JM, Evans J, Webster M. Highly active homogeneous nickel catalysts for alkene dimerisation: crystal structure of [Ni(η3-C3H5)(PPh3)Br] and in situ characterisation of AlEt3-activated [Ni(η3-C3H5)(PPh3)Br] by nuclear magnetic resonance and extended X-ray absorption fine structure spectroscopy. ACTA ACUST UNITED AC 1994. [DOI: 10.1039/dt9940001337] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Pillai S, Tembe G, Ravindranathan M. Codimerization of 2,5-norbornadiene with ethylene using soluble cobalt and nickel catalysts. ACTA ACUST UNITED AC 1993. [DOI: 10.1016/0304-5102(93)80086-a] [Citation(s) in RCA: 23] [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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Fiaud JC, Legros JY. Preparation of optically pure 1,2,5-triphenylphospholane. Use as ligand for enantioselective transition-metal catalysis. Tetrahedron Lett 1991. [DOI: 10.1016/s0040-4039(00)93435-x] [Citation(s) in RCA: 44] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Buschmann H, Scharf HD, Hoffmann N, Esser P. Das Isoinversionsprinzip - ein allgemeines Selektionsmodell in der Chemie. Angew Chem Int Ed Engl 1991. [DOI: 10.1002/ange.19911030505] [Citation(s) in RCA: 103] [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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Bolm C, Davis WM, Halterman RL, Barry Sharpless K. Synthese und Struktur eines chiralen,C3-symmetrischen Monophosphans. Angew Chem Int Ed Engl 1988. [DOI: 10.1002/ange.19881000625] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Bolm C, Davis WM, Halterman RL, Sharpless KB. Synthesis and Crystal Structure of a ChiralC3-Symmetric Monophosphane. ACTA ACUST UNITED AC 1988. [DOI: 10.1002/anie.198808351] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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