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Nifant'ev IE, Vinogradov AA, Vinogradov AA, Sadrtdinova GI, Komarov PD, Minyaev ME, Ilyin SO, Kiselev AV, Samurganova TI, Ivchenko PV. Synthesis, molecular structure and catalytic performance of heterocycle-fused cyclopentadienyl-amido CGC of Ti (IV) in ethylene (co)polymerization: The formation and precision rheometry of long-chain branched polyethylenes. Eur Polym J 2022. [DOI: 10.1016/j.eurpolymj.2022.111397] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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2
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Syntheses of Silylene-Bridged Thiophene-Fused Cyclopentadienyl ansa-Metallocene Complexes for Preparing High-Performance Supported Catalyst. Catalysts 2022. [DOI: 10.3390/catal12030283] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
We synthesized a series of Me2Si-bridged ansa-zirconocene complexes coordinated by thiophene-fused cyclopentadienyl and fluorenyl ligands (Me2Si(2-R1-3-R2-4,5-Me2C7S)(2,7-R32C13H6))ZrMe2 (R1 = Me or H, R2 = H or Me, R3 = H, tBu, or Cl) for the subsequent preparation of supported catalysts. We determined that the fluorenyl ligand adopts an η3-binding mode in 9 (R1 = Me, R2 = H, R3 = H) by X-ray crystallography. Further, we synthesized a derivative 15 by substituting the fluorenyl ligand in 9 with a 2-methyl-4-(4-tert-butylphenyl)indenyl ligand, derivatives 20 and 23 by substituting the Me2Si bridge in 12 (R1 = Me, R2 = H, R3 = tBu) and 15 with a tBuO(CH2)6(Me)Si bridge, and the dinuclear congener 26 by connecting two complexes with a –(Me)Si(CH2)6Si(Me)– spacer. The silica-supported catalysts prepared using 12, 20, and 26 demonstrated up to two times higher productivity in ethylene/1-hexene copolymerization than that prepared with conventional (THI)ZrCl2 (21–26 vs. 12 kg-PE/g-(supported catalyst)), producing polymers with comparable molecular weight (Mw, 330–370 vs. 300 kDa), at a higher 1-hexene content (1.3 vs. 1.0 mol%) but a lower bulk density of polymer particles (0.35 vs. 0.42 g/mL).
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3
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Kumar S, Dholakiya BZ, Jangir R. Role of organometallic complexes in olefin polymerization: a review report. J Organomet Chem 2021. [DOI: 10.1016/j.jorganchem.2021.122066] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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4
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Bae SM, Jeong SM, Baek JW, Lee HJ, Kim H, Yoon Y, Chung S, Lee BY. Dinuclear metallocene complexes for high-performance supported catalysts. Eur Polym J 2021. [DOI: 10.1016/j.eurpolymj.2020.110243] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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5
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Nifant'ev IE, Ivchenko PV, Vinogradov AA. Heterocycle-fused cyclopentadienyl metal complexes: Heterocene synthesis, structure and catalytic applications. Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2020.213515] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Nifant'ev IE, Ivchenko PV. Synthesis of Heteroarene‐Fused Cyclopentadienes and Related Compounds Suitable for Metallocene Preparation. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000178] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Ilya E. Nifant'ev
- A.V. Topchiev Institute of Petrochemical Synthesis RAS Leninsky pr. 22 119991 Moscow Russian Federation
- Department of Chemistry M.V. Lomonosov Moscow University Leninskie gory 1–3 119991 Moscow Russian Federation
| | - Pavel V. Ivchenko
- A.V. Topchiev Institute of Petrochemical Synthesis RAS Leninsky pr. 22 119991 Moscow Russian Federation
- Department of Chemistry M.V. Lomonosov Moscow University Leninskie gory 1–3 119991 Moscow Russian Federation
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Chai Y, Wu C, Liu D, Run M, Cui D. Self-assisted stereospecific polymerization of unmasked polar 4-methylthio-1-butene. Sci China Chem 2019. [DOI: 10.1007/s11426-018-9438-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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8
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Martin MC, Sandridge MJ, Williams CW, Francis ZA, France S. Dehydrative Nazarov-type electrocyclizations of alkenyl (hetero)aryl carbinols via calcium catalysis: Access to cyclopenta[b]thiophenes and indene derivatives. Tetrahedron 2017. [DOI: 10.1016/j.tet.2017.03.041] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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9
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Preparation of "Constrained Geometry" Titanium Complexes of [1,2]Azasilinane Framework for Ethylene/1-Octene Copolymerization. Molecules 2017; 22:molecules22020258. [PMID: 28208780 PMCID: PMC6155698 DOI: 10.3390/molecules22020258] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2016] [Revised: 02/01/2017] [Accepted: 02/07/2017] [Indexed: 11/17/2022] Open
Abstract
The Me₂Si-bridged ansa-Cp/amido half-metallocene, [Me₂Si(η⁵-Me₄C₅)(NtBu)]TiCl₂, termed a "constrained-geometry catalyst (CGC)", is a representative homogeneous Ziegler catalyst. CGC derivatives with the [1,2]azasilinane framework, in which the amide alkyl substituent is joined by the Si-bridge, were prepared, and the catalytic performances of these species was studied. Me₄C₅HSi(Me)(CH₂CH=CH₂)-NH(C(R)(R')CH=CH₂) (R, R' = H or methyl; Me₄C₅H = tetramethylcyclopentadienyl) was susceptible to ring closure metathesis (RCM) when treated with Schrock's Mo-catalyst to afford -Si(Me₄C₅H)(Me)CH₂CH=CHC(R)(R')NH- containing a six-membered ring framework. Using the precursors and the products of RCM, various CGC derivatives, i.e., [-Si(η⁵-Me₄C₅)(Me)CH₂CH=CHC(R)(H)N-]TiMe₂ (13, R = H; 15, R = Me), [-Si(η⁵-Me₄C₅)(Me)CH₂CH₂CH₂CH₂N]TiMe₂ (14), [(η⁵-Me₄C₅)Si(Me)(CH₂CH=CH₂)NCH₂CH=CH₂]TiMe₂ (16), [(η⁵-Me₄C₅)Si (Me)(CH=CH₂)NCH₂CH=CH₂]TiMe₂ (17), and [(η⁵-Me₄C₅)Si(Me)(CH₂CH₃)NCH₂CH₂CH₃]TiMe₂ (18), were prepared. The catalytic activity of the newly prepared complexes was lower than that of CGC when activated with [Ph₃C][B(C₆F₅)₄]/iBu₃Al. However, the catalytic activity of these species was improved by using tetrabutylaluminoxane ([iBu₂Al]₂O) instead of iBu₃Al and the activity of 14/[Ph₃C][B(C₆F₅)₄]/[iBu₂Al]₂O was comparable to that of CGC/[Ph₃C][B(C₆F₅)₄]/iBu₃Al (4.7 and 5.0 × 10⁶ g/mol-Ti, respectively). Advantageously, the newly prepared complexes produced higher molecular weight poly(ethylene-co-1-octene)s than CGC.
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Raju S, van Slagmaat CAMR, Lutz M, Kleijn H, Jastrzebski JTBH, Moret ME, Klein Gebbink RJM. Synthesis of Cyclopentadienyl-Based Tricarbonyl Rhenium Complexes and Some Unusual Reactivities of Cyclopentadienyl Substituents. Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201601220] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Suresh Raju
- Organic Chemistry and Catalysis; Debye Institute for Nanomaterials Science; Faculty of Science; Utrecht University; Universiteitsweg 99 3584 CG Utrecht The Netherlands
| | - Christian A. M. R. van Slagmaat
- Organic Chemistry and Catalysis; Debye Institute for Nanomaterials Science; Faculty of Science; Utrecht University; Universiteitsweg 99 3584 CG Utrecht The Netherlands
| | - Martin Lutz
- Crystal and Structural Chemistry; Bijvoet Center for Biomolecular Research; Faculty of Science; Utrecht University; Padualaan 8 3584 CH Utrecht The Netherlands
| | - Hendrik Kleijn
- Organic Chemistry and Catalysis; Debye Institute for Nanomaterials Science; Faculty of Science; Utrecht University; Universiteitsweg 99 3584 CG Utrecht The Netherlands
| | - Johann T. B. H. Jastrzebski
- Organic Chemistry and Catalysis; Debye Institute for Nanomaterials Science; Faculty of Science; Utrecht University; Universiteitsweg 99 3584 CG Utrecht The Netherlands
| | - Marc-Etienne Moret
- Organic Chemistry and Catalysis; Debye Institute for Nanomaterials Science; Faculty of Science; Utrecht University; Universiteitsweg 99 3584 CG Utrecht The Netherlands
| | - Robertus J. M. Klein Gebbink
- Organic Chemistry and Catalysis; Debye Institute for Nanomaterials Science; Faculty of Science; Utrecht University; Universiteitsweg 99 3584 CG Utrecht The Netherlands
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Ronellenfitsch M, Gehrmann T, Wadepohl H, Enders M. Improving 1-Hexene Incorporation of Highly Active Cp–Chromium-Based Ethylene Polymerization Catalysts. Macromolecules 2016. [DOI: 10.1021/acs.macromol.6b01891] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Mathias Ronellenfitsch
- Institute of Inorganic Chemistry, Heidelberg University, Im Neuenheimer Feld 270, D-69120 Heidelberg, Germany
| | - Thorsten Gehrmann
- Institute of Inorganic Chemistry, Heidelberg University, Im Neuenheimer Feld 270, D-69120 Heidelberg, Germany
| | - Hubert Wadepohl
- Institute of Inorganic Chemistry, Heidelberg University, Im Neuenheimer Feld 270, D-69120 Heidelberg, Germany
| | - Markus Enders
- Institute of Inorganic Chemistry, Heidelberg University, Im Neuenheimer Feld 270, D-69120 Heidelberg, Germany
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12
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Chen R, Yao C, Wang M, Xie H, Wu C, Cui D. Synthesis of Heterocyclic-Fused Cyclopentadienyl Scandium Complexes and the Catalysis for Copolymerization of Ethylene and Dicyclopentadiene. Organometallics 2015. [DOI: 10.1021/om500992v] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Runhai Chen
- State
Key Laboratory of Polymer Physics and Chemistry, Changchun Institute
of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People’s Republic of China
- School
of Chemical Engineering, Shandong University of Technology, Zibo 255049, People’s Republic of China
| | - Changguang Yao
- State
Key Laboratory of Polymer Physics and Chemistry, Changchun Institute
of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People’s Republic of China
- University of the Chinese Academy of Sciences, Changchun
Branch, Changchun 130022, People’s Republic of China
| | - Meiyan Wang
- Institute
of Theoretical Chemistry, State Key Laboratory of Theoretical and
Computational Chemistry, Jilin University, Changchun 130022, China
| | - Hongyan Xie
- State
Key Laboratory of Polymer Physics and Chemistry, Changchun Institute
of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People’s Republic of China
- University of the Chinese Academy of Sciences, Changchun
Branch, Changchun 130022, People’s Republic of China
| | - Chunji Wu
- State
Key Laboratory of Polymer Physics and Chemistry, Changchun Institute
of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People’s Republic of China
| | - Dongmei Cui
- State
Key Laboratory of Polymer Physics and Chemistry, Changchun Institute
of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People’s Republic of China
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Preparation of Thiophene-Fused and Tetrahydroquinoline-Linked Cyclopentadienyl Titanium Complexes for Ethylene/α-Olefin Copolymerization. Catalysts 2013. [DOI: 10.3390/catal3010104] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
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14
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Preparation of half-titanocenes of thiophene-fused trimethylcyclopentadienyl ligands and their ethylene copolymerization reactivity. J Organomet Chem 2011. [DOI: 10.1016/j.jorganchem.2011.03.014] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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15
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Park JH, Do SH, Cyriac A, Yun H, Lee BY. Preparation of half-metallocenes of thiophene-fused and tetrahydroquinoline-linked cyclopentadienyl ligands for ethylene/α-olefin copolymerization. Dalton Trans 2010; 39:9994-10002. [PMID: 20856990 DOI: 10.1039/c0dt00637h] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Directed ortho-lithiation of the lithium carbamates generated from tetrahydroquinoline or tetrahydroquinaldine enables one-step preparation of thiophene-fused and tetrahydroquinoline-linked cyclopentadienes [2-R(1)-3-R(2)-4,5-dimethyl-6-(2-R(3)-2,3,4,5-tetrahydroquinolin-8-yl)-4H-cyclopenta[b]thiophene (R(1), R(2), R(3) = H or methyl)], from which titanium(iv) and zirconium(iv) complexes are prepared. The molecular structures of Me(2)Ti-complexes (12, R(1) = R(2) = Me, R(3) = H; 14, R(1) = R(2) = R(3) = Me) and Cl(2)Zr-complex (17, R(1) = R(2) = Me, R(3) = H) are determined by X-ray crystallography. The Me(2)Ti-complexes, 14 and 15 (R(1) = R(3) = Me, R(2) = H) show excellent activities (62 and 54 × 10(6) g/molTi·h) in ethylene/1-octene copolymerization, even when activated with small amount of MAO (Al/Ti = 1000).
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Affiliation(s)
- Ji Hae Park
- Department of Molecular Science and Technology, Ajou University, Suwon, 443-749, Korea
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16
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Senda T, Hanaoka H, Okado Y, Oda Y, Tsurugi H, Mashima K. Titanium Complexes of Silicon-Bridged Cyclopentadienyl−Phenoxy Ligands Modified with Fused-Thiophene: Synthesis, Characterization, and Their Catalytic Performance in Copolymerization of Ethylene and 1-Hexene. Organometallics 2009. [DOI: 10.1021/om900853q] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Taichi Senda
- Organic Synthesis Research Laboratory, Sumitomo Chemical Co., Ltd., 1-98, Kasugadenaka 3-chome, Konohana-ku, Osaka 554-8558, Japan
| | - Hidenori Hanaoka
- Organic Synthesis Research Laboratory, Sumitomo Chemical Co., Ltd., 1-98, Kasugadenaka 3-chome, Konohana-ku, Osaka 554-8558, Japan
| | - Yoshiya Okado
- Petrochemicals Research Laboratory, Sumitomo Chemical Co., Ltd., 2-1, Kitasode, Sodegaura, Chiba 299-0295, Japan
| | - Yoshiaki Oda
- Organic Synthesis Research Laboratory, Sumitomo Chemical Co., Ltd., 1-98, Kasugadenaka 3-chome, Konohana-ku, Osaka 554-8558, Japan
| | - Hayato Tsurugi
- Department of Chemistry, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan
| | - Kazushi Mashima
- Department of Chemistry, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan
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Kang E, Kim S, Kim T, Chung J, Hahn JS, Ko J, Ok M, Cheong M, Kang SO. Structure–Catalytic Activity Relationship in Bridging Silacycloalkyl Ring Conformations of Constrained Geometry Titanium Complexes. Eur J Inorg Chem 2008. [DOI: 10.1002/ejic.200701312] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Eugene Kang
- Department of Chemistry, Korea University, 208 Seochang, Chochiwon, Chung‐nam 339‐700, Korea, Fax: +82‐41‐867‐5396
| | - Sung‐Kwan Kim
- Department of Chemistry, Korea University, 208 Seochang, Chochiwon, Chung‐nam 339‐700, Korea, Fax: +82‐41‐867‐5396
| | - Tae‐Jin Kim
- Department of Chemistry, Korea University, 208 Seochang, Chochiwon, Chung‐nam 339‐700, Korea, Fax: +82‐41‐867‐5396
| | - Jae‐Ho Chung
- Department of Chemistry, Korea University, 208 Seochang, Chochiwon, Chung‐nam 339‐700, Korea, Fax: +82‐41‐867‐5396
| | - Jong Sok Hahn
- R&D Center, SK Corporation, 140‐1 Wonchon‐dong, Yuseong‐gu, Daejeon 305‐712, Korea
| | - Jaejung Ko
- Department of Chemistry, Korea University, 208 Seochang, Chochiwon, Chung‐nam 339‐700, Korea, Fax: +82‐41‐867‐5396
| | - Myung‐Ahn Ok
- R&D Center, SK Corporation, 140‐1 Wonchon‐dong, Yuseong‐gu, Daejeon 305‐712, Korea
| | - Minserk Cheong
- Department of Chemistry and Research Institute for Basic Sciences, Kyung Hee University, Seoul 130‐701, Korea
| | - Sang Ook Kang
- Department of Chemistry, Korea University, 208 Seochang, Chochiwon, Chung‐nam 339‐700, Korea, Fax: +82‐41‐867‐5396
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