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He Q, Zhang R, Hu Y, Li J, Yu H, Zheng Y, Qian J. The Effect of Feeding Sequence on the Structure and Properties of the Ethylene/1-Octene Copolymer in the Semi-Continuous Polymerization Reaction System. Polymers (Basel) 2024; 16:526. [PMID: 38399903 PMCID: PMC10893375 DOI: 10.3390/polym16040526] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2024] [Revised: 02/04/2024] [Accepted: 02/09/2024] [Indexed: 02/25/2024] Open
Abstract
The performance of ethylene/1-octene copolymer primarily depends on the microstructure of the polymer chain. This study employed a new method to control the inter-distribution of hexyl chain branches directly on the backbone of the ethylene/1-octene copolymer. Three ethylene/1-octene copolymers with different inter-distributions of hexyl chain branches were synthesized using [Me2Si(C5Me4) (NtBu)] TiCl2 (Ti-CGC) by different feeding sequences in the semi-continuous polymerization reaction system. The three copolymers were named according to the feeding sequence of the materials: ethylene/1-octene/Ti-CGC (EOC), 1-octene/Ti-CGC/ethylene (OCE), and ethylene/Ti-CGC/1-octene (ECO), respectively. The structure and properties of the copolymers were characterized using HT-GPC, 13C-NMR, DSC, WAXD, DMA, MI, and Uniaxial Tension Test. The results showed that the feeding sequence greatly affected the comonomer distribution of the molecular chains, molecular weight, molecular weight distribution, and chemical composition of the copolymers, consequently influencing their thermal performance and mechanical properties. Thus, it is probable that one could obtain an ethylene/1-octene copolymer with designed properties by controlling the feeding sequence during the ethylene/1-octene semi-continuous copolymerization process.
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Affiliation(s)
- Qiqi He
- College of Chemistry and Chemical Engineering, China University of Petroleum (East China), Qingdao 266555, China; (Q.H.); (R.Z.)
| | - Ruijun Zhang
- College of Chemistry and Chemical Engineering, China University of Petroleum (East China), Qingdao 266555, China; (Q.H.); (R.Z.)
| | - Yuexin Hu
- College of Petrochemical Engineering, Liaoning Petrochemical University, Fushun 113001, China; (Y.H.); (J.L.)
| | - Junhua Li
- College of Petrochemical Engineering, Liaoning Petrochemical University, Fushun 113001, China; (Y.H.); (J.L.)
| | - Hongbo Yu
- PetroChina Fushun Petrochemical, Fushun 113001, China;
| | - Yong Zheng
- College of Materials and Chemical Engineering, China Three Gorges University, Yichang 443002, China
| | - Jianhua Qian
- College of Petrochemical Engineering, Liaoning Petrochemical University, Fushun 113001, China; (Y.H.); (J.L.)
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Wu X, Ding D, Zhang Y, Jiang HJ, Wang T, Zhao LP. Enantioselective synthesis of 1-aminoindene derivatives via asymmetric Brønsted acid catalysis. Chem Commun (Camb) 2021; 57:9680-9683. [PMID: 34486623 DOI: 10.1039/d1cc03568a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We describe a catalytic asymmetric iminium ion cyclization reaction of simple 2-alkenylbenzaldimines using a BINOL-derived chiral N-triflyl phosphoramide. The corresponding 1-aminoindenes and tetracyclic 1-aminoindanes are formed in good yields and high enantioselectivities. Further, the chemical utility of the obtained enantiopure 1-aminoindene is demonstrated for the asymmetric synthesis of (S)-rasagiline.
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Affiliation(s)
- Xiang Wu
- Anhui Province Key Laboratory of Advanced Catalytic Materials and Reaction Engineering, School of Chemistry and Chemical Engineering, Hefei University of Technology, 193 Tunxi Road, Hefei 230009, China. .,Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen 518055, China
| | - Du Ding
- Department of Chemistry, University of Science and Technology of China, Hefei, 230026, China
| | - Ying Zhang
- Department of Chemistry, University of Science and Technology of China, Hefei, 230026, China
| | - Hua-Jie Jiang
- Department of Chemistry, University of Science and Technology of China, Hefei, 230026, China
| | - Tao Wang
- Anhui Province Key Laboratory of Advanced Catalytic Materials and Reaction Engineering, School of Chemistry and Chemical Engineering, Hefei University of Technology, 193 Tunxi Road, Hefei 230009, China.
| | - Li-Ping Zhao
- Anhui Province Key Laboratory of Advanced Catalytic Materials and Reaction Engineering, School of Chemistry and Chemical Engineering, Hefei University of Technology, 193 Tunxi Road, Hefei 230009, China.
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3
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Rondo RT, Kirschbaum K, Mason MR. New class of trianionic constrained geometry ligands: Representative complexes of zirconium. J Organomet Chem 2021. [DOI: 10.1016/j.jorganchem.2021.121830] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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4
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Izmer VV, Lebedev AY, Kononovich DS, Borisov IS, Kulyabin PS, Goryunov GP, Uborsky DV, Canich JAM, Voskoboynikov AZ. ansa-Metallocenes Bearing 4-(N-Azolyl)-2-methylindenyl and Related Ligands: Development of Highly Isoselective Catalysts for Propene Polymerization at Higher Temperatures. Organometallics 2019. [DOI: 10.1021/acs.organomet.9b00648] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Vyatcheslav V. Izmer
- Department of Chemistry, Lomonosov Moscow State University, Leninskie Gory 1/3, Moscow 119991, Russia
| | - Artem Y. Lebedev
- Department of Chemistry, Lomonosov Moscow State University, Leninskie Gory 1/3, Moscow 119991, Russia
| | - Dmitry S. Kononovich
- Department of Chemistry, Lomonosov Moscow State University, Leninskie Gory 1/3, Moscow 119991, Russia
| | - Ilya S. Borisov
- Department of Chemistry, Lomonosov Moscow State University, Leninskie Gory 1/3, Moscow 119991, Russia
| | - Pavel S. Kulyabin
- Department of Chemistry, Lomonosov Moscow State University, Leninskie Gory 1/3, Moscow 119991, Russia
| | - Georgy P. Goryunov
- Department of Chemistry, Lomonosov Moscow State University, Leninskie Gory 1/3, Moscow 119991, Russia
| | - Dmitry V. Uborsky
- Department of Chemistry, Lomonosov Moscow State University, Leninskie Gory 1/3, Moscow 119991, Russia
| | - Jo Ann M. Canich
- Baytown Technology and Engineering Complex, ExxonMobil Chemical Company, 5200 Bayway Drive, Baytown, Texas 77520, United States
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Chen MH, Hsieh JC, Lee YH, Cheng CH. Controlled Synthesis of Enantioselective 1-Aminoindenes via Cobalt-Catalyzed [3 + 2] Annulation Reaction. ACS Catal 2018. [DOI: 10.1021/acscatal.8b02566] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Min-Hsien Chen
- Department of Chemistry, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Jen-Chieh Hsieh
- Department of Chemistry, Tamkang University, New Taipei City 25137, Taiwan
| | - Yi-Hsien Lee
- Department of Chemistry, Tamkang University, New Taipei City 25137, Taiwan
| | - Chien-Hong Cheng
- Department of Chemistry, National Tsing Hua University, Hsinchu 30013, Taiwan
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6
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Ohtsuka Y, Yamamoto T, Miyazaki T, Yamakawa T. Palladium-catalyzed Selective Amination of Aryl(haloaryl)amines with 9H
-Carbazole Derivatives. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201701356] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Yuhki Ohtsuka
- Sagami Chemical Research Institute; Hayakawa 2743-1, Ayase Kanagawa 252-1193 Japan
| | - Tetsuya Yamamoto
- Sagami Chemical Research Institute; Hayakawa 2743-1, Ayase Kanagawa 252-1193 Japan
- Present address: Tokyo Denki University; Senjyu Asahi-cho 5, Adachi-ku Tokyo 120-8511 Japan
| | - Takanori Miyazaki
- Tosoh Corporation; Kaisei-cho 4560, Shunan-shi Yamaguchi 746-8501 Japan
| | - Tetsu Yamakawa
- Sagami Chemical Research Institute; Hayakawa 2743-1, Ayase Kanagawa 252-1193 Japan
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Medvedev MG, Borisov IS, Kulyabin PS, Izmer VV, Kononovich DS, Uborsky DV, Voskoboynikov AZ. Crystal structures of di-μ-bromido-bis{di-bromido-[η 5-2-(di-methyl-amino)-inden-yl]zirconium(IV)} and di-bromido-bis-[η 5-2-(di-methyl-amino)-inden-yl]zirconium(IV). Acta Crystallogr E Crystallogr Commun 2016; 72:1599-1602. [PMID: 27840717 PMCID: PMC5095842 DOI: 10.1107/s2056989016016595] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2016] [Accepted: 10/17/2016] [Indexed: 11/10/2022]
Abstract
In the title compounds, [Zr2Br6(C11H12N)2], (I) and [ZrBr2(C11H12N)2], (II), the positions of the η5-binding 2-di-methyl-amino-indenyl units are fixed by intra-molecular C-H⋯Br inter-actions involving aromatic or di-methyl-amino H atoms. The binuclear mol-ecule of (I) is located on a general position, while the mononuclear mol-ecule of (II) is situated on a twofold rotation axis. Both ZrIV atoms in (I) are ligated by one cyclo-penta-dienyl (CP) ring and four Br ligands (two bridging, two terminal), while in (II) the ZrIV atom is ligated by two CP rings and two terminal Br ligands. The crystal structures of both (I) and (II) comprise of strands of π-π- and N-π-bonded mol-ecules, which in turn are linked by C-H⋯Br inter-actions.
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Affiliation(s)
- Michael G. Medvedev
- X-ray Structural Laboratory, A. N. Nesmeyanov Institute of Organoelement Compounds, Vavilova St. 28, GSP-1, Moscow 119991, V-334, Russian Federation
| | - Ilya S. Borisov
- Department of Chemistry, Lomonosov Moscow State University, 1/3 Leninskie Gory, GSP-1, Moscow 119991, Russian Federation
| | - Pavel S. Kulyabin
- Department of Chemistry, Lomonosov Moscow State University, 1/3 Leninskie Gory, GSP-1, Moscow 119991, Russian Federation
| | - Vyatcheslav V. Izmer
- Department of Chemistry, Lomonosov Moscow State University, 1/3 Leninskie Gory, GSP-1, Moscow 119991, Russian Federation
| | - Dmitry S. Kononovich
- Department of Chemistry, Lomonosov Moscow State University, 1/3 Leninskie Gory, GSP-1, Moscow 119991, Russian Federation
| | - Dmitry V. Uborsky
- Department of Chemistry, Lomonosov Moscow State University, 1/3 Leninskie Gory, GSP-1, Moscow 119991, Russian Federation
| | - Alexander Z. Voskoboynikov
- Department of Chemistry, Lomonosov Moscow State University, 1/3 Leninskie Gory, GSP-1, Moscow 119991, Russian Federation
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8
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New zirconocenes with 4,5,6,7-tetrahydroindene ligands. Synthesis and catalytic activity in the polymerization of ethylene and copolymerization of ethylene with hex-1-ene. Russ Chem Bull 2016. [DOI: 10.1007/s11172-016-1485-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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9
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Hao X, Yuan J, Yu GA, Qiu MQ, She NF, Sun Y, Zhao C, Mao SL, Yin J, Liu SH. Air-stable and highly efficient indenyl-derived phosphine ligand: Application to Buchwald–Hartwig amination reactions. J Organomet Chem 2012. [DOI: 10.1016/j.jorganchem.2012.02.007] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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10
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Terao H, Iwashita A, Matsukawa N, Ishii S, Mitani M, Tanaka H, Nakano T, Fujita T. Ethylene and Ethylene/α-Olefin (Co)Polymerization Behavior of Bis(phenoxy−imine)Ti Catalysts: Significant Substituent Effects on Activity and Comonomer Incorporation. ACS Catal 2011. [DOI: 10.1021/cs100148a] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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11
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Klosin J, Kruper WJ, Patton JT, Abboud KA. Synthesis and X-ray structure of novel 2- and 3-heteroatom-substituted ansa-zirconocene complexes. J Organomet Chem 2009. [DOI: 10.1016/j.jorganchem.2009.03.049] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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