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Cheong M, Singh A. A Density Functional Study on Ethylene Trimerization and Tetramerization Using Real Sasol Cr-PNP Catalysts. Molecules 2023; 28:molecules28073101. [PMID: 37049864 PMCID: PMC10095999 DOI: 10.3390/molecules28073101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2023] [Revised: 03/28/2023] [Accepted: 03/28/2023] [Indexed: 04/03/2023] Open
Abstract
To gain molecular-level insight into the intricate features of the catalytic behavior of chromium–diphosphine complexes regarding ethylene tri- and tetramerizations, we performed density functional theory (DFT) calculations. The selective formation of 1-hexene and 1-octene by the tri- and tetramerizations of ethylene are generally accepted to follow the metallacycle mechanism. To explore the mechanism of ethylene tri- and tetramerizations, we used a real Sasol chromium complex with a nitrogen-bridged diphosphine ligand with ortho- and para-methoxyaryl substituents. We explore the trimerization mechanism for ethylene first and, later on for comparison, we extend the potential energy surfaces (PES) for the tetramerization of ethylene with both catalysts. The calculated results reveal that the formation of 1-hexene and 1-octene with the ortho-methoxyaryl and para-methoxyaryl Cr-PNP catalysts have nearly similar potential energy surfaces (PES). From the calculated results important insights are gained into the tri- and tetramerizations. The tetramerization of ethylene with the para-methoxyaryl Cr-PNP catalyst lowers the barrier height by ~2.6 kcal/mol compared to that of ethylene with the ortho-methoxyaryl Cr-PNP catalyst. The selectivity toward trimerization or tetramerization comes from whether the energy barrier for ethylene insertion to metallacycloheptane is higher than β-hydride transfer to make 1-hexene. The metallacycle mechanism with Cr (I)–Cr (III) intermediates is found to be the most favored, with the oxidative coupling of the two coordinated ethylenes to form chromacyclopentane being the rate-determining step.
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2
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Sicard AJ, Ghaffari B, Gabidullin BM, Ovens JS, Hughes RP, Baker RT. Nickel-Catalyzed Homologation of Vinylidene Difluoride (CH 2═CF 2): Selective β-F vs β-H Elimination. J Am Chem Soc 2022; 144:22713-22721. [PMID: 36469940 DOI: 10.1021/jacs.2c10448] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Hydrofluoroolefins (HFOs) constitute the newest generation of fluorocarbon refrigerants and foam-blowing agents due to their reduced global warming potential vs their saturated analogues. To identify new synthetic routes to HFOs, we show that reactions of bulky Ni(0) phosphine and -NHC complexes with vinylidene difluoride (VF2) afford μ-fluoro-1,1,3-trifluorobut-3-enyl Ni complexes. Moreover, addition of triisopropylsilane allows for reductive elimination of the reduced product─2,4,4-trifluoro-1-butene─demonstrating the Ni-catalyzed hydrodefluorodimerization of VF2. Accompanying DFT calculations identify the T-shaped nickelacyclopentane intermediate that spontaneously undergoes selective intramolecular β-F (vs β-H) elimination.
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Affiliation(s)
- Alexandre J Sicard
- Department of Chemistry and Biomolecular Sciences and Centre for Catalysis Research and Innovation, University of Ottawa, 30 Marie Curie, Ottawa, Ontario K1N 6N5, Canada
| | - Behnaz Ghaffari
- Department of Chemistry and Biomolecular Sciences and Centre for Catalysis Research and Innovation, University of Ottawa, 30 Marie Curie, Ottawa, Ontario K1N 6N5, Canada
| | - Bulat M Gabidullin
- Faculty of Science, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
| | - Jeffrey S Ovens
- Faculty of Science, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
| | - Russell P Hughes
- Department of Chemistry, Dartmouth College, Hanover, New Hampshire 03755, United States
| | - R Tom Baker
- Department of Chemistry and Biomolecular Sciences and Centre for Catalysis Research and Innovation, University of Ottawa, 30 Marie Curie, Ottawa, Ontario K1N 6N5, Canada
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3
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Zhong X, Liu L, Guo X, Sun L, Liu B, Liu Z. Cr/PCCP-Catalysed Selective Ethylene Oligomerization: Analysis of Various Conformations and the Hemilabile Methoxy Group. Catal Sci Technol 2022. [DOI: 10.1039/d2cy01219g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this work, the effect of the hemilabile methoxy group in the Cr-based catalyst bearing (C6H5)2-P(CH2)2P-(C6H5)2 (PCCP) and (o-MeOC6H4)(C6H5)-P(CH2)2P-(C6H5)(o-MeOC6H4) (PCCPOMe) ligands on ethylene tri- and tetramerization were systematically investigated by...
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4
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Makume BF, Holzapfel CW, Maumela MC, Willemse JA, van den Berg JA. Ethylene Tetramerisation: A Structure-Selectivity Correlation. Chempluschem 2020; 85:2308-2315. [PMID: 33048469 DOI: 10.1002/cplu.202000553] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Revised: 09/25/2020] [Indexed: 11/10/2022]
Abstract
The effect of ethylene tetramerisation ligand structures on 1-octene selectivity is well studied. However, by-product formation is less understood. In this work, a range of PNP ligand structures are correlated with the full product selectivity and with catalyst activity. As steric bulk on the N-substituent increases, the product selectivity shifts from >10 % to < 3% of both C6 cyclics and C16+ by-products. 1-Octene peaks at ca. 70%. Thereafter, only 1-hexene increases. Similar selectivity changes were observed for ortho-Ph-substituted PNP ligands. The C10-14 selectivity was less affected by the ligand structure. The ligand effect on the changes in selectivity is explained mechanistically. Lastly, an increase in ligand steric bulk was found to improve catalyst activity and reduce polymer formation by an order of magnitude. It is proposed that steric bulk promotes formation of cationic catalytic species which are responsible for selective ethylene oligomerisation.
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Affiliation(s)
- Boitumelo F Makume
- Department of Chemical Sciences, University of Johannesburg, Kingsway Campus, Aucklandpark, 2006, Johannesburg, South Africa.,Group Technology, Sasol South Africa, 1 Klasie Havenga road, 1947, Sasolburg, South Africa
| | - Cedric W Holzapfel
- Department of Chemical Sciences, University of Johannesburg, Kingsway Campus, Aucklandpark, 2006, Johannesburg, South Africa
| | - Munaka C Maumela
- Department of Chemical Sciences, University of Johannesburg, Kingsway Campus, Aucklandpark, 2006, Johannesburg, South Africa.,Group Technology, Sasol South Africa, 1 Klasie Havenga road, 1947, Sasolburg, South Africa
| | - J Alexander Willemse
- Group Technology, Sasol South Africa, 1 Klasie Havenga road, 1947, Sasolburg, South Africa
| | - Jan A van den Berg
- Group Technology, Sasol South Africa, 1 Klasie Havenga road, 1947, Sasolburg, South Africa
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5
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A hemilabile diphosphine pyridine pincer ligand: σ- and π-binding in molybdenum coordination complexes. Polyhedron 2020. [DOI: 10.1016/j.poly.2020.114631] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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6
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Kwon DH, Maley SM, Stanley JC, Sydora OL, Bischof SM, Ess DH. Why Less Coordination Provides Higher Reactivity Chromium Phosphinoamidine Ethylene Trimerization Catalysts. ACS Catal 2020. [DOI: 10.1021/acscatal.0c02595] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Doo-Hyun Kwon
- Department of Chemistry and Biochemistry, Brigham Young University, Provo, Utah 84602 United States
| | - Steven M. Maley
- Department of Chemistry and Biochemistry, Brigham Young University, Provo, Utah 84602 United States
| | - Johnathan C. Stanley
- Department of Chemistry and Biochemistry, Brigham Young University, Provo, Utah 84602 United States
| | - Orson L. Sydora
- Research and Technology, Chevron Phillips Chemical Company LP, 1862 Kingwood Drive, Kingwood, Texas 77339 United States
| | - Steven M. Bischof
- Research and Technology, Chevron Phillips Chemical Company LP, 1862 Kingwood Drive, Kingwood, Texas 77339 United States
| | - Daniel H. Ess
- Department of Chemistry and Biochemistry, Brigham Young University, Provo, Utah 84602 United States
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7
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Gordon CP, Andersen RA, Copéret C. Metal Olefin Complexes: Revisiting the
Dewar
−
Chatt
−
Duncanson
Model and Deriving Reactivity Patterns from Carbon‐13 NMR Chemical Shift. Helv Chim Acta 2019. [DOI: 10.1002/hlca.201900151] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Christopher P. Gordon
- Department of Chemistry and Applied BiosciencesETH Zürich Vladimir-Prelog-Weg 1–5 CH-8093 Zürich Switzerland
| | - Richard A. Andersen
- Department of ChemistryUniversity of California Berkeley, California 94720 United States
| | - Christophe Copéret
- Department of Chemistry and Applied BiosciencesETH Zürich Vladimir-Prelog-Weg 1–5 CH-8093 Zürich Switzerland
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8
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Skatova AA, Bazyakina NL, Fedushkin IL, Piskunov AV, Druzhkov NO, Cherkasov AV. Mononuclear gallium complexes with the redox-active dmp-bian ligand (dmp-bian is 1,2-bis[(2,6-dimethylphenyl)imino]acenaphthene): synthesis and reactions with alkynes. Russ Chem Bull 2019. [DOI: 10.1007/s11172-019-2383-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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9
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Gao J, Zhang L, Alam F, Chen Y, Jiang T. Synthesis of PE Wax by Chromium Complexes Bearing NP Ligands. ChemistrySelect 2018. [DOI: 10.1002/slct.201800952] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Jinlong Gao
- Tianjin Marine Chemical Technology Engineering CenterCollege of Chemical Engineering and Material ScienceTianjin University of Science & Technology Tianjin 300457 China
| | - Le Zhang
- Handan Key Laboratory of Organic small molecule materialsHandan University Handan 056005 China
| | - Fakhre Alam
- Tianjin Marine Chemical Technology Engineering CenterCollege of Chemical Engineering and Material ScienceTianjin University of Science & Technology Tianjin 300457 China
| | - Yanhui Chen
- Tianjin Marine Chemical Technology Engineering CenterCollege of Chemical Engineering and Material ScienceTianjin University of Science & Technology Tianjin 300457 China
| | - Tao Jiang
- Tianjin Marine Chemical Technology Engineering CenterCollege of Chemical Engineering and Material ScienceTianjin University of Science & Technology Tianjin 300457 China
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10
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NMR chemical shift analysis decodes olefin oligo- and polymerization activity of d 0 group 4 metal complexes. Proc Natl Acad Sci U S A 2018; 115:E5867-E5876. [PMID: 29891699 DOI: 10.1073/pnas.1803382115] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
d0 metal-alkyl complexes (M = Ti, Zr, and Hf) show specific activity and selectivity in olefin polymerization and oligomerization depending on their ligand set and charge. Here, we show by a combined experimental and computational study that the 13C NMR chemical shift tensors of the α-carbon of metal alkyls that undergo olefin insertion signal the presence of partial alkylidene character in the metal-carbon bond, which facilitates this reaction. The alkylidene character is traced back to the π-donating interaction of a filled orbital on the alkyl group with an empty low-lying metal d-orbital of appropriate symmetry. This molecular orbital picture establishes a connection between olefin insertion into a metal-alkyl bond and olefin metathesis and a close link between the Cossee-Arlmann and Green-Rooney polymerization mechanisms. The 13C NMR chemical shifts, the α-H agostic interaction, and the low activation barrier of ethylene insertion are, therefore, the results of the same orbital interactions, thus establishing chemical shift tensors as a descriptor for olefin insertion.
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11
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Gunasekara T, Kim J, Preston A, Steelman DK, Medvedev GA, Delgass WN, Sydora OL, Caruthers JM, Abu-Omar MM. Mechanistic Insights into Chromium-Catalyzed Ethylene Trimerization. ACS Catal 2018. [DOI: 10.1021/acscatal.8b00468] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Thilina Gunasekara
- Department of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, Indiana 47907, United States
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, California 93106-9510, United States
| | - Jungsuk Kim
- Charles D. Davidson School of Chemical Engineering, Purdue University, Forney Hall of Chemical
Engineering, 480 Stadium Mall Drive, West Lafayette, Indiana 47907, United States
| | - Andrew Preston
- Department of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, Indiana 47907, United States
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, California 93106-9510, United States
| | - D. Keith Steelman
- Department of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, Indiana 47907, United States
| | - Grigori A. Medvedev
- Charles D. Davidson School of Chemical Engineering, Purdue University, Forney Hall of Chemical
Engineering, 480 Stadium Mall Drive, West Lafayette, Indiana 47907, United States
| | - W. Nicholas Delgass
- Charles D. Davidson School of Chemical Engineering, Purdue University, Forney Hall of Chemical
Engineering, 480 Stadium Mall Drive, West Lafayette, Indiana 47907, United States
| | - Orson L. Sydora
- Research and Technology, Chevron Phillips Chemical LP, 1862 Kingwood Drive, Kingwood, Texas 77339, United States
| | - James M. Caruthers
- Charles D. Davidson School of Chemical Engineering, Purdue University, Forney Hall of Chemical
Engineering, 480 Stadium Mall Drive, West Lafayette, Indiana 47907, United States
| | - Mahdi M. Abu-Omar
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, California 93106-9510, United States
- Department of Chemical Engineering, University of California, Santa Barbara, California 93106-9510, United States
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12
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Ishii S, Nakano T, Kawamura K, Kinoshita S, Ichikawa S, Fujita T. Development of new selective ethylene trimerization catalysts based on highly active ethylene polymerization catalysts. Catal Today 2018. [DOI: 10.1016/j.cattod.2017.09.017] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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13
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Zhang L, Wei W, Alam F, Chen Y, Jiang T. Efficient chromium-based catalysts for ethylene tri-/tetramerization switched by silicon-bridged/N,P-based ancillary ligands: a structural, catalytic and DFT study. Catal Sci Technol 2017. [DOI: 10.1039/c7cy01561e] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
High performance catalysts switched by a series of silicon-bridged/N,P-based ancillary ligands have been explored.
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Affiliation(s)
- Le Zhang
- Tianjin Key Laboratory of Marine Resources and Chemistry
- College of Chemical Engineering and Materials Science
- Tianjin University of Science and Technology
- Tianjin 300457
- China
| | - Wei Wei
- Tianjin Key Laboratory of Marine Resources and Chemistry
- College of Chemical Engineering and Materials Science
- Tianjin University of Science and Technology
- Tianjin 300457
- China
| | - Fakhre Alam
- Tianjin Key Laboratory of Marine Resources and Chemistry
- College of Chemical Engineering and Materials Science
- Tianjin University of Science and Technology
- Tianjin 300457
- China
| | - Yanhui Chen
- Tianjin Key Laboratory of Marine Resources and Chemistry
- College of Chemical Engineering and Materials Science
- Tianjin University of Science and Technology
- Tianjin 300457
- China
| | - Tao Jiang
- Tianjin Key Laboratory of Marine Resources and Chemistry
- College of Chemical Engineering and Materials Science
- Tianjin University of Science and Technology
- Tianjin 300457
- China
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14
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Britovsek GJP, McGuinness DS. A DFT Mechanistic Study on Ethylene Tri- and Tetramerization with Cr/PNP Catalysts: Single versus Double Insertion Pathways. Chemistry 2016; 22:16891-16896. [DOI: 10.1002/chem.201603909] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2016] [Indexed: 11/05/2022]
Affiliation(s)
- George J. P. Britovsek
- Department of Chemistry; Imperial College London; Exhibition Rd, South Kensington London SW7 2AZ UK
| | - David S. McGuinness
- School of Physical Sciences; University of Tasmania; Private Bag 75 Hobart 7001 Australia
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15
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Zhang QW, An K, Liu LC, Guo S, Jiang C, Guo H, He W. Rhodium-Catalyzed Intramolecular C−H Silylation by Silacyclobutanes. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201602376] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Qing-Wei Zhang
- School of Pharmaceutical Sciences; Tsinghua University; Beijing 100084 China
| | - Kun An
- School of Pharmaceutical Sciences; Tsinghua University; Beijing 100084 China
| | - Li-Chuan Liu
- School of Pharmaceutical Sciences; Tsinghua University; Beijing 100084 China
| | - Shuangxi Guo
- School of Pharmaceutical Sciences; Tsinghua University; Beijing 100084 China
| | - Chenran Jiang
- School of Pharmaceutical Sciences; Tsinghua University; Beijing 100084 China
| | - Huifang Guo
- School of Pharmaceutical Sciences; Tsinghua University; Beijing 100084 China
| | - Wei He
- School of Pharmaceutical Sciences; Tsinghua University; Beijing 100084 China
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16
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Zhang QW, An K, Liu LC, Guo S, Jiang C, Guo H, He W. Rhodium-Catalyzed Intramolecular C-H Silylation by Silacyclobutanes. Angew Chem Int Ed Engl 2016; 55:6319-23. [PMID: 27073004 DOI: 10.1002/anie.201602376] [Citation(s) in RCA: 76] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2016] [Indexed: 11/11/2022]
Abstract
Silacyclobutane was discovered to be an efficient C-H bond silylation reagent. Under the catalysis of Rh(I) /TMS-segphos, silacyclobutane undergoes sequential C-Si/C-H bond activations, affording a series of π-conjugated siloles in high yields and regioselectivities. The catalytic cycle was proposed to involve a rarely documented endocyclic β-hydride elimination of five-membered metallacycles, which after reductive elimination gave rise to a Si-Rh(I) species that is capable of C-H activation.
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Affiliation(s)
- Qing-Wei Zhang
- School of Pharmaceutical Sciences, Tsinghua University, Beijing, 100084, China
| | - Kun An
- School of Pharmaceutical Sciences, Tsinghua University, Beijing, 100084, China
| | - Li-Chuan Liu
- School of Pharmaceutical Sciences, Tsinghua University, Beijing, 100084, China
| | - Shuangxi Guo
- School of Pharmaceutical Sciences, Tsinghua University, Beijing, 100084, China
| | - Chenran Jiang
- School of Pharmaceutical Sciences, Tsinghua University, Beijing, 100084, China
| | - Huifang Guo
- School of Pharmaceutical Sciences, Tsinghua University, Beijing, 100084, China
| | - Wei He
- School of Pharmaceutical Sciences, Tsinghua University, Beijing, 100084, China.
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17
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Karbach FF, Severn JR, Duchateau R. Effect of Aluminum Alkyls on a Homogeneous and Silica-Supported Phenoxy-Imine Titanium Catalyst for Ethylene Trimerization. ACS Catal 2015. [DOI: 10.1021/acscatal.5b01359] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Fabian F. Karbach
- Department
of Chemical Engineering and Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - John R. Severn
- UHMWPE Chemistry & Catalysis, DSM, NL-6160MD Geleen, The Netherlands
| | - Robbert Duchateau
- Department
of Chemical Engineering and Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
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18
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Britovsek GJP, McGuinness DS, Wierenga TS, Young CT. Single- and Double-Coordination Mechanism in Ethylene Tri- and Tetramerization with Cr/PNP Catalysts. ACS Catal 2015. [DOI: 10.1021/acscatal.5b00989] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- George J. P. Britovsek
- Department of Chemistry, Imperial College London, Exhibition Road, South Kensington,
London SW7 2AZ, United Kingdom
| | - David S. McGuinness
- School
of Physical Sciences−Chemistry, University of Tasmania, Private
Bag 75, Hobart 7001, Australia
| | - Tanita S. Wierenga
- School
of Physical Sciences−Chemistry, University of Tasmania, Private
Bag 75, Hobart 7001, Australia
| | - Craig T. Young
- Department of Chemistry, Imperial College London, Exhibition Road, South Kensington,
London SW7 2AZ, United Kingdom
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19
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Yip SYY, Aïssa C. Isomerization of Olefins Triggered by Rhodium-Catalyzed C-H Bond Activation: Control of Endocyclic β-Hydrogen Elimination. Angew Chem Int Ed Engl 2015; 54:6870-3. [PMID: 25907465 PMCID: PMC4497606 DOI: 10.1002/anie.201500596] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2015] [Revised: 03/12/2015] [Indexed: 11/07/2022]
Abstract
Five-membered metallacycles are typically reluctant to undergo endocyclic β-hydrogen elimination. The rhodium-catalyzed isomerization of 4-pentenals into 3-pentenals occurs through this elementary step and cleavage of two C-H bonds, as supported by deuterium-labeling studies. The reaction proceeds without decarbonylation, leads to trans olefins exclusively, and tolerates other olefins normally prone to isomerization. Endocyclic β-hydrogen elimination can also be controlled in an enantiodivergent reaction on a racemic mixture.
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Affiliation(s)
- Stephanie Y Y Yip
- Department of Chemistry, University of Liverpool, Crown Street, L69 7ZD (UK)
| | - Christophe Aïssa
- Department of Chemistry, University of Liverpool, Crown Street, L69 7ZD (UK).
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20
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Yip SYY, Aïssa C. Isomerization of Olefins Triggered by Rhodium-Catalyzed CH Bond Activation: Control of Endocyclic β-Hydrogen Elimination. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201500596] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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21
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Pasha FA, Basset JM, Toulhoat H, de Bruin T. DFT Study on the Impact of the Methylaluminoxane Cocatalyst in Ethylene Oligomerization Using a Titanium-Based Catalyst. Organometallics 2015. [DOI: 10.1021/om5008874] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Farhan Ahmad Pasha
- IFP Energies Nouvelles, 1-4
Avenue de Bois Préau, 92852, Rueil-Malmaison, France
- KAUST
Catalysis Research Center, King Abdullah University of Science and Technology, Thuwal 23955-6900 Saudi Arabia
| | - Jean-Marie Basset
- KAUST
Catalysis Research Center, King Abdullah University of Science and Technology, Thuwal 23955-6900 Saudi Arabia
| | - Hervé Toulhoat
- IFP Energies Nouvelles, 1-4
Avenue de Bois Préau, 92852, Rueil-Malmaison, France
| | - Theodorus de Bruin
- IFP Energies Nouvelles, 1-4
Avenue de Bois Préau, 92852, Rueil-Malmaison, France
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22
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Nisa RU, Maria M, Wasim F, Mahmood T, Ludwig R, Ayub K. Mechanistic insight of TiCl4catalyzed formal [3 + 3] cyclization of 1,3-bis(silyl enol ethers) with 1,3-dielectrophiles. RSC Adv 2015. [DOI: 10.1039/c5ra19238b] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The mechanism of TiCl4mediated formal [3 + 3] cyclization of 1,3-bis(silyl enol ethers) with 1,3-dielectrophiles is studied at the B3LYP level of density functional theory (DFT) to rationalize the experimental regioselectivity.
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Affiliation(s)
- Riffat Un Nisa
- Department of Chemistry
- COMSATS Institute for Information Technology
- Campus Abbottabad
- Abbottabad
- Pakistan
| | - Maria Maria
- Department of Chemistry
- COMSATS Institute for Information Technology
- Campus Abbottabad
- Abbottabad
- Pakistan
| | - Fatima Wasim
- Department of Chemistry
- COMSATS Institute for Information Technology
- Campus Abbottabad
- Abbottabad
- Pakistan
| | - Tariq Mahmood
- Department of Chemistry
- COMSATS Institute for Information Technology
- Campus Abbottabad
- Abbottabad
- Pakistan
| | - Ralf Ludwig
- Leibniz-Institut für Katalyse e. V. an der Universität Rostock
- 18059 Rostock
- Germany
- Department of Physical Chemistry
- University of Rostock
| | - Khurshid Ayub
- Department of Chemistry
- COMSATS Institute for Information Technology
- Campus Abbottabad
- Abbottabad
- Pakistan
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23
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Breuil PAR, Magna L, Olivier-Bourbigou H. Role of Homogeneous Catalysis in Oligomerization of Olefins : Focus on Selected Examples Based on Group 4 to Group 10 Transition Metal Complexes. Catal Letters 2014. [DOI: 10.1007/s10562-014-1451-x] [Citation(s) in RCA: 121] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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24
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Yang Y, Liu Z, Cheng R, He X, Liu B. Mechanistic DFT Study on Ethylene Trimerization of Chromium Catalysts Supported by a Versatile Pyrrole Ligand System. Organometallics 2014. [DOI: 10.1021/om500306a] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Yun Yang
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Meilong Road 130, Shanghai 200237, People’s Republic of China
- Department of Chemical Engineering and Chemistry, Eindhoven University of Technology,
P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Zhen Liu
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Meilong Road 130, Shanghai 200237, People’s Republic of China
| | - Ruihua Cheng
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Meilong Road 130, Shanghai 200237, People’s Republic of China
| | - Xuelian He
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Meilong Road 130, Shanghai 200237, People’s Republic of China
| | - Boping Liu
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Meilong Road 130, Shanghai 200237, People’s Republic of China
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25
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Fedushkin IL, Skatova AA, Dodonov VA, Chudakova VA, Bazyakina NL, Piskunov AV, Demeshko SV, Fukin GK. Digallane with Redox-Active Diimine Ligand: Dualism of Electron-Transfer Reactions. Inorg Chem 2014; 53:5159-70. [DOI: 10.1021/ic500259k] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Igor L. Fedushkin
- G. A. Razuvaev Institute of Organometallic Chemistry of Russian Academy of Sciences, Tropinina 49, Nizhny Novgorod 603950, Russian Federation
- Nizhny Novgorod State University, Prospect Gagarina 23, Nizhny Novgorod 603950, Russian Federation
| | - Alexandra A. Skatova
- G. A. Razuvaev Institute of Organometallic Chemistry of Russian Academy of Sciences, Tropinina 49, Nizhny Novgorod 603950, Russian Federation
| | - Vladimir A. Dodonov
- G. A. Razuvaev Institute of Organometallic Chemistry of Russian Academy of Sciences, Tropinina 49, Nizhny Novgorod 603950, Russian Federation
| | - Valentina A. Chudakova
- G. A. Razuvaev Institute of Organometallic Chemistry of Russian Academy of Sciences, Tropinina 49, Nizhny Novgorod 603950, Russian Federation
| | - Natalia L. Bazyakina
- G. A. Razuvaev Institute of Organometallic Chemistry of Russian Academy of Sciences, Tropinina 49, Nizhny Novgorod 603950, Russian Federation
| | - Alexander V. Piskunov
- G. A. Razuvaev Institute of Organometallic Chemistry of Russian Academy of Sciences, Tropinina 49, Nizhny Novgorod 603950, Russian Federation
- Nizhny Novgorod State University, Prospect Gagarina 23, Nizhny Novgorod 603950, Russian Federation
| | - Serhiy V. Demeshko
- Institut für Anorganische Chemie, Georg-August-Universität, Tammannstrasse 4, Göttingen 37077, Germany
| | - Georgy K. Fukin
- G. A. Razuvaev Institute of Organometallic Chemistry of Russian Academy of Sciences, Tropinina 49, Nizhny Novgorod 603950, Russian Federation
- Nizhny Novgorod State University, Prospect Gagarina 23, Nizhny Novgorod 603950, Russian Federation
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26
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Liu Z, He X, Cheng R, Eisen MS, Terano M, Scott SL, Liu B. Chromium Catalysts for Ethylene Polymerization and Oligomerization. CATALYSIS AND KINETICS - MOLECULAR LEVEL CONSIDERATIONS 2014. [DOI: 10.1016/b978-0-12-419974-3.00003-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
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27
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Mahamo T, Moss JR, Mapolie SF, Smith GS, Slootweg JC, Lammertsma K. Platinacycloalkane complexes containing [P,N] bidentate ligands: synthesis and decomposition studies. Dalton Trans 2014; 43:5546-57. [DOI: 10.1039/c3dt52798k] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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28
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Robinson R, McGuinness DS, Yates BF. The Mechanism of Ethylene Dimerization with the Ti(OR′)4/AlR3 Catalytic System: DFT Studies Comparing Metallacycle and Cossee Proposals. ACS Catal 2013. [DOI: 10.1021/cs4006875] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Robert Robinson
- School
of Chemistry, University of Tasmania, Private Bag
75, Hobart 7001, Australia
| | - David S. McGuinness
- School
of Chemistry, University of Tasmania, Private Bag
75, Hobart 7001, Australia
| | - Brian F. Yates
- School
of Chemistry, University of Tasmania, Private Bag
75, Hobart 7001, Australia
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29
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Heinig S, Wöhl A, Müller W, Al-Hazmi MH, Müller BH, Peulecke N, Rosenthal U. The Effect of Substituents in PNPNH Ligands on Activity and Selectivity of a Chromium-Based Catalyst System for Highly Selective Ethylene Trimerization. ChemCatChem 2013. [DOI: 10.1002/cctc.201300324] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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30
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Suttil JA, McGuinness DS, Gardiner MG, Evans SJ. Ethylene polymerisation and oligomerisation with arene-substituted phenoxy-imine complexes of titanium: investigation of multi-mechanism catalytic behaviour. Dalton Trans 2013; 42:4185-96. [DOI: 10.1039/c3dt32183e] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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31
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Suttil JA, McGuinness DS. Mechanism of Ethylene Dimerization Catalyzed by Ti(OR′)4/AlR3. Organometallics 2012. [DOI: 10.1021/om3008508] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- James A. Suttil
- School of Chemistry, University
of Tasmania, Private
Bag 75, Hobart 7001, Australia
| | - David S. McGuinness
- School of Chemistry, University
of Tasmania, Private
Bag 75, Hobart 7001, Australia
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32
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Otten E, Meetsma A, Hessen B. ansa-Cyclopentadienyl-Arene Tantalum Complexes: Structure and Reactivity of Neutral, Cationic, and Dicationic Derivatives. Organometallics 2012. [DOI: 10.1021/om300421m] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Edwin Otten
- Stratingh Institute for
Chemistry, University of Groningen, Nijenborgh 4, 9747 AG, Groningen, The Netherlands
| | - Auke Meetsma
- Stratingh Institute for
Chemistry, University of Groningen, Nijenborgh 4, 9747 AG, Groningen, The Netherlands
| | - Bart Hessen
- Stratingh Institute for
Chemistry, University of Groningen, Nijenborgh 4, 9747 AG, Groningen, The Netherlands
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33
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Zhong L, Liu Z, Cheng R, Tang S, Qiu P, He X, Terano M, Liu B. Active Site Transformation During the Induction Period of Ethylene Polymerization over the Phillips CrOx/SiO2 Catalyst. ChemCatChem 2012. [DOI: 10.1002/cctc.201100278] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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34
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Lyaskovskyy V, de Bruin B. Redox Non-Innocent Ligands: Versatile New Tools to Control Catalytic Reactions. ACS Catal 2012. [DOI: 10.1021/cs200660v] [Citation(s) in RCA: 797] [Impact Index Per Article: 66.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Volodymyr Lyaskovskyy
- Van ‘t Hoff Institute for
Molecular Sciences
(HIMS), University of Amsterdam, P.O. Box
94720 1090 GE Amsterdam, The Netherlands
| | - Bas de Bruin
- Van ‘t Hoff Institute for
Molecular Sciences
(HIMS), University of Amsterdam, P.O. Box
94720 1090 GE Amsterdam, The Netherlands
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35
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Machan CW, Lifschitz AM, Stern CL, Sarjeant AA, Mirkin CA. Crystallographic Snapshots of the Bond-Breaking Isomerization Reactions Involving Nickel(II) Complexes with Hemilabile Ligands. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201107620] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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36
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Machan CW, Lifschitz AM, Stern CL, Sarjeant AA, Mirkin CA. Crystallographic Snapshots of the Bond-Breaking Isomerization Reactions Involving Nickel(II) Complexes with Hemilabile Ligands. Angew Chem Int Ed Engl 2011; 51:1469-72. [DOI: 10.1002/anie.201107620] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2011] [Revised: 11/21/2011] [Indexed: 11/10/2022]
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37
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Yang Y, Liu Z, Zhong L, Qiu P, Dong Q, Cheng R, Vanderbilt J, Liu B. Spin Surface Crossing between Chromium(I)/Sextet and Chromium(III)/Quartet without Deprotonation in SNS-Cr Mediated Ethylene Trimerization. Organometallics 2011. [DOI: 10.1021/om200722r] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Yun Yang
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Meilong Road 130, Shanghai 200237, People's Republic of China
| | - Zhen Liu
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Meilong Road 130, Shanghai 200237, People's Republic of China
| | - Lei Zhong
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Meilong Road 130, Shanghai 200237, People's Republic of China
| | - Pengyuan Qiu
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Meilong Road 130, Shanghai 200237, People's Republic of China
| | - Qi Dong
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Meilong Road 130, Shanghai 200237, People's Republic of China
| | - Ruihua Cheng
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Meilong Road 130, Shanghai 200237, People's Republic of China
| | - Jeffrey Vanderbilt
- Westlake Chemical Corporation, P.O. Box 8388, Longview, Texas 75607, United States
| | - Boping Liu
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Meilong Road 130, Shanghai 200237, People's Republic of China
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38
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39
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Budzelaar PHM. Mechanisms of branch formation in metal-catalyzed ethene polymerization. WILEY INTERDISCIPLINARY REVIEWS-COMPUTATIONAL MOLECULAR SCIENCE 2011. [DOI: 10.1002/wcms.79] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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40
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McGuinness DS. Olefin oligomerization via metallacycles: dimerization, trimerization, tetramerization, and beyond. Chem Rev 2011; 111:2321-41. [PMID: 20873753 DOI: 10.1021/cr100217q] [Citation(s) in RCA: 475] [Impact Index Per Article: 36.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- David S McGuinness
- School of Chemistry, University of Tasmania, Private Bag 75, Hobart 7001, Australia.
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41
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Toulhoat H, Lontsi Fomena M, de Bruin T. Computational Study of the Effect of Confinement within Microporous Structures on the Activity and Selectivity of Metallocene Catalysts for Ethylene Oligomerization. J Am Chem Soc 2011; 133:2481-91. [DOI: 10.1021/ja105950z] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Hervé Toulhoat
- Direction Scientifique and ‡Direction Chimie et Physico-chimie Appliquées, IFP Energies nouvelles, 1 et 4 avenue de Bois-Préau, 92852 Rueil-Malmaison, France
| | - Mireille Lontsi Fomena
- Direction Scientifique and ‡Direction Chimie et Physico-chimie Appliquées, IFP Energies nouvelles, 1 et 4 avenue de Bois-Préau, 92852 Rueil-Malmaison, France
| | - Theodorus de Bruin
- Direction Scientifique and ‡Direction Chimie et Physico-chimie Appliquées, IFP Energies nouvelles, 1 et 4 avenue de Bois-Préau, 92852 Rueil-Malmaison, France
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42
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Son KS, Waymouth RM. Selective Ethylene Oligomerization in the Presence of ZnR2: Synthesis of Terminally-Functionalized Ethylene Oligomers. Organometallics 2010. [DOI: 10.1021/om100503v] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Kyung-sun Son
- Departement of Chemistry, Stanford University, Stanford, California 94305
| | - Robert M. Waymouth
- Departement of Chemistry, Stanford University, Stanford, California 94305
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43
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Peitz S, Aluri B, Peulecke N, Müller B, Wöhl A, Müller W, Al-Hazmi M, Mosa F, Rosenthal U. An Alternative Mechanistic Concept for Homogeneous Selective Ethylene Oligomerization of Chromium-Based Catalysts: Binuclear Metallacycles as a Reason for 1-Octene Selectivity? Chemistry 2010; 16:7670-6. [DOI: 10.1002/chem.201000750] [Citation(s) in RCA: 85] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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44
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Kirillov E, Marquet N, Razavi A, Belia V, Hampel F, Roisnel T, Gladysz JA, Carpentier JF. New C1-Symmetric Ph2C-Bridged Multisubstituted ansa-Zirconocenes for Highly Isospecific Propylene Polymerization: Synthetic Approach via Activated Fulvenes. Organometallics 2010. [DOI: 10.1021/om100289y] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Evgeny Kirillov
- Université de Rennes
1
- Friedrich-Alexander Universität Erlangen-Nürnberg
| | | | | | | | - Frank Hampel
- Friedrich-Alexander Universität Erlangen-Nürnberg
| | | | - John A. Gladysz
- Friedrich-Alexander Universität Erlangen-Nürnberg
- Texas A&M University
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45
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Wöhl A, Müller W, Peitz S, Peulecke N, Aluri BR, Müller BH, Heller D, Rosenthal U, Al-Hazmi MH, Mosa FM. Influence of Process Parameters on the Reaction Kinetics of the Chromium-Catalyzed Trimerization of Ethylene. Chemistry 2010; 16:7833-42. [PMID: 20512824 DOI: 10.1002/chem.201000533] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Anina Wöhl
- Linde AG, Linde Engineering Division, Dr.-Carl-von-Linde-Strasse 6-14, 82049 Pullach, Germany
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46
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Hanton MJ, Daubney L, Lebl T, Polas S, Smith DM, Willemse A. Selective dimerisation of alpha-olefins using tungsten-based initiators. Dalton Trans 2010; 39:7025-37. [PMID: 20502816 DOI: 10.1039/c0dt00106f] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The selective dimerisation of the alpha-olefins 1-pentene through to 1-nonene is reported using an in situ-generated catalyst derived from tungsten hexachloride, aniline, triethylamine and alkylaluminium halide. The influence of reagent identity and reaction stoichiometry, along with activator, solvent and alpha-olefin substrate choice are probed. The catalyst is found to be highly selective towards dimerisation, minimising the formation of undesired heavier oligomers. Notably, the selectivity within the dimer fraction is found to favour the formation of products with methyl branches. The selectivity towards individual olefin isomers has been determined and the system is found to also produce trace levels of dienes and alkanes. A kinetic study of the system reveals a second order dependence on substrate. Comparison of the products observed, with those expected for metallacyclic and Cossee-type mechanisms, suggests that the latter is in operation, something confirmed by the results of a C(2)H(4)/C(2)D(4) co-dimerisation experiment which showed full isotopic scrambling in the products. Thus a mechanistic proposal is made to account for the observed behaviour of the system, including the diene and alkane formation.
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Affiliation(s)
- Martin J Hanton
- Sasol Technology UK, St Andrews Laboratory, Purdie Building, North Haugh, St Andrews, Fife, UK KY16 9ST.
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47
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Suzuki Y, Kinoshita S, Shibahara A, Ishii S, Kawamura K, Inoue Y, Fujita T. Trimerization of Ethylene to 1-Hexene with Titanium Complexes Bearing Phenoxy−Imine Ligands with Pendant Donors Combined with MAO. Organometallics 2010. [DOI: 10.1021/om1003368] [Citation(s) in RCA: 83] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yasuhiko Suzuki
- Research Center, Mitsui Chemicals, Inc., 580-32 Nagaura, Sodegaura, Chiba 299-0265, Japan
| | - Shinsuke Kinoshita
- Research Center, Mitsui Chemicals, Inc., 580-32 Nagaura, Sodegaura, Chiba 299-0265, Japan
| | - Atsushi Shibahara
- Research Center, Mitsui Chemicals, Inc., 580-32 Nagaura, Sodegaura, Chiba 299-0265, Japan
| | - Seiichi Ishii
- Research Center, Mitsui Chemicals, Inc., 580-32 Nagaura, Sodegaura, Chiba 299-0265, Japan
| | - Kazumori Kawamura
- Research Center, Mitsui Chemicals, Inc., 580-32 Nagaura, Sodegaura, Chiba 299-0265, Japan
| | - Yoshihisa Inoue
- Research Center, Mitsui Chemicals, Inc., 580-32 Nagaura, Sodegaura, Chiba 299-0265, Japan
| | - Terunori Fujita
- Research Center, Mitsui Chemicals, Inc., 580-32 Nagaura, Sodegaura, Chiba 299-0265, Japan
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48
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Batuecas M, Esteruelas MA, García-Yebra C, Oñate E. Redox Isomerization of Allylic Alcohols Catalyzed by Osmium and Ruthenium Complexes Containing a Cyclopentadienyl Ligand with a Pendant Amine or Phosphoramidite Group: X-ray Structure of an η3-1-Hydroxyallyl-Metal-Hydride Intermediate. Organometallics 2010. [DOI: 10.1021/om100126t] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- María Batuecas
- Departamento de Química Inorgánica, Instituto de Ciencia de Materiales de Aragón, Universidad de Zaragoza, CSIC, 50009 Zaragoza, Spain
| | - Miguel A. Esteruelas
- Departamento de Química Inorgánica, Instituto de Ciencia de Materiales de Aragón, Universidad de Zaragoza, CSIC, 50009 Zaragoza, Spain
| | - Cristina García-Yebra
- Departamento de Química Inorgánica, Instituto de Ciencia de Materiales de Aragón, Universidad de Zaragoza, CSIC, 50009 Zaragoza, Spain
| | - Enrique Oñate
- Departamento de Química Inorgánica, Instituto de Ciencia de Materiales de Aragón, Universidad de Zaragoza, CSIC, 50009 Zaragoza, Spain
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49
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Qi Y, Dong Q, Zhong L, Liu Z, Qiu P, Cheng R, He X, Vanderbilt J, Liu B. Role of 1,2-Dimethoxyethane in the Transformation from Ethylene Polymerization to Trimerization Using Chromium Tris(2-ethylhexanoate)-Based Catalyst System: A DFT Study. Organometallics 2010. [DOI: 10.1021/om900917k] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Yuan Qi
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Meilong Road 130, Shanghai 200237, People's Republic of China
| | - Qi Dong
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Meilong Road 130, Shanghai 200237, People's Republic of China
| | - Lei Zhong
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Meilong Road 130, Shanghai 200237, People's Republic of China
| | - Zhen Liu
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Meilong Road 130, Shanghai 200237, People's Republic of China
| | - Pengyuan Qiu
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Meilong Road 130, Shanghai 200237, People's Republic of China
| | - Ruihua Cheng
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Meilong Road 130, Shanghai 200237, People's Republic of China
| | - Xuelian He
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Meilong Road 130, Shanghai 200237, People's Republic of China
| | | | - Boping Liu
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Meilong Road 130, Shanghai 200237, People's Republic of China
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50
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Suttil JA, McGuinness DS, Evans SJ. Arene substituted cyclopentadienyl complexes of Zr and Hf: preparation and evaluation as catalysts for ethylene trimerisation. Dalton Trans 2010; 39:5278-85. [DOI: 10.1039/c000913j] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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