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Mehmood A, Mahmood A, Xu X, Raza W, Ahmed S, Ullah N, Luo Y, Tian X. Mechanistic study to reveal steric and electronic aspects involved in the formation of microstructures during Pd-catalyzed olefin/divinyl formal copolymerization: reactivity to catalyst choice. Phys Chem Chem Phys 2023; 25:2439-2450. [PMID: 36598957 DOI: 10.1039/d2cp05117f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
The advancement of metal-catalyzed copolymers is a formidable challenge for achieving distinct catalytic properties to compete with existing plastic polymers in industrial commodities. Herein, we reveal the roles of electronic and steric environments in the thermodynamic preference of microstructures in ethylene/divinyl formal (DVF) co-polymerization using a Pd catalyst under mild conditions to accommodate the respective industrial applicabilities. The insertion products of DVF result in the alteration of the steric crowding, ultimately favoring the efficient formation of cyclic units having potential applications in the manufacture of high-strength fibers. More specifically, to achieve an improved yield of the end copolymer, we tuned the catalytic activity and regioselectivity through a variety of catalysts during ethylene-DVF co-polymerization. The naphthalene-bridged (P^O)PdMe catalyst was found to be promising in terms of the least hindered (buried volume of 47.8%) environment with the thermodynamic preference of 2,1-insertion with an energy of 5.1 kcal mol-1 among all the Pd-metal based catalysts. The highest activity with moderate energy barriers of the proposed catalyst will open new avenues for achieving a variety of potential applications, which is typically not possible using existing polymerization techniques.
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Affiliation(s)
- Andleeb Mehmood
- College of Physics and Optoelectronic Engineering, Shenzhen University, 518000, Shenzhen, China.
| | - Ayyaz Mahmood
- College of Physics and Optoelectronic Engineering, Shenzhen University, 518000, Shenzhen, China.
| | - Xiaowei Xu
- PetroChina Petrochemical Research Institute, 102206, Beijing, China.
| | - Waseem Raza
- Institute for Advanced Study, Shenzhen University, Guangdong, 518060, Shenzhen, P. R. China
| | - Shehzad Ahmed
- College of Physics and Optoelectronic Engineering, Shenzhen University, 518000, Shenzhen, China.
| | - Naeem Ullah
- College of Physics and Optoelectronic Engineering, Shenzhen University, 518000, Shenzhen, China.
| | - Yi Luo
- PetroChina Petrochemical Research Institute, 102206, Beijing, China. .,School of Chemical Engineering, Dalian University of Technology, 116024, Dalian, China
| | - Xiaoqing Tian
- College of Physics and Optoelectronic Engineering, Shenzhen University, 518000, Shenzhen, China.
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2
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Rahbar A, Falcone B, Pareras G, Nekoomanesh-Haghighi M, Bahri-Laleh N, Poater A. Chain Walking in the AlCl 3 Catalyzed Cationic Polymerization of α-Olefins. Chempluschem 2023; 88:e202200432. [PMID: 36592006 DOI: 10.1002/cplu.202200432] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Revised: 12/06/2022] [Indexed: 12/13/2022]
Abstract
Continuing efforts aimed at performing the 1-decene polymerization to low viscosity polyalphaolefins (PAO)s using a less hazardous AlCl3 catalyst than boron-based analogs, the basic mechanisms of this system were revealed in this research. In this aspect, neat AlCl3 and AlCl3 /toluene were carried out to perform 1-decene polymerizations. Microstructure analyses of the as-synthesized oils revealed low molecular weight (708 vs. 1529 g/mol), kinematic viscosity (KV100 =6.4 vs. 22.2 cSt), and long chain branching (82.1 vs. 84.7) of PAO from the system containing toluene solvent. Furthermore, NMR analysis confirmed various types of short chain branch (SCB) with the inclusion of toluene ring in the structure of final PAO chains. Then, to shed light on the basic mechanisms of cationic polymerization of 1-decene including: i) chain initiation, ii) chain transfer to the monomer, iii) isomerization of the carbocation via a chain walking mechanism (causes different SCB length), and iv) binding of toluene ring to the propagating PAO chain (to yield aromatic containing oligomers), molecular modeling at the DFT level was employed. The energies obtained confirmed the ease of carbocation isomerization and chain transfer mechanisms in toluene medium, which well confirms the highly branched structure experimentally obtained for related PAO.
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Affiliation(s)
- Amene Rahbar
- Polymerization Engineering Department, Iran Polymer and Petrochemical Institute (IPPI), P.O. Box 14965/115, Tehran, Iran
| | - Bruno Falcone
- Polymerization Engineering Department, Iran Polymer and Petrochemical Institute (IPPI), P.O. Box 14965/115, Tehran, Iran
- School of Chemistry, University College Cork, College Road, T12 K8AF, Cork, Ireland
| | - Gerard Pareras
- School of Chemistry, University College Cork, College Road, T12 K8AF, Cork, Ireland
- Institut de Química Computacional i Catàlisi, Departament de Química, Universitat de Girona, Mª Aurèlia Capmany 69, 17003, Girona, Spain
| | - Mehdi Nekoomanesh-Haghighi
- Polymerization Engineering Department, Iran Polymer and Petrochemical Institute (IPPI), P.O. Box 14965/115, Tehran, Iran
| | - Naeimeh Bahri-Laleh
- Polymerization Engineering Department, Iran Polymer and Petrochemical Institute (IPPI), P.O. Box 14965/115, Tehran, Iran
| | - Albert Poater
- Institut de Química Computacional i Catàlisi, Departament de Química, Universitat de Girona, Mª Aurèlia Capmany 69, 17003, Girona, Spain
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3
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Chen M, Chen C. Nickel catalysts for the preparation of functionalized polyolefin materials. CHINESE SCIENCE BULLETIN-CHINESE 2022. [DOI: 10.1360/tb-2021-1187] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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4
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Responsive hyperbranched poly(formyl-1,2,3-triazole)s toward quadruple-modal information security protection. Sci China Chem 2022. [DOI: 10.1007/s11426-021-1192-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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5
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Multivariate Linear Regression Models to Predict Monomer Poisoning Effect in Ethylene/Polar Monomer Copolymerization Catalyzed by Late Transition Metals. INORGANICS 2022. [DOI: 10.3390/inorganics10020026] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
This study combined density functional theory (DFT) calculations and multivariate linear regression (MLR) to analyze the monomer poisoning effect in ethylene/polar monomer copolymerization catalyzed by the Brookhart-type catalysts. The calculation results showed that the poisoning effect of polar monomers with relatively electron-deficient functional groups is weaker, such as ethers, and halogens. On the contrary, polar monomers with electron-rich functional groups (carbonyl, carboxyl, and acyl groups) exert a stronger poisoning effect. In addition, three descriptors that significantly affect the poisoning effect have been proposed on the basis of the multiple linear regression model, viz., the chemical shift of the vinyl carbon atom and heteroatom of polar monomer as well as the metal-X distance in the σ-coordination structure. It is expected that these models could guide the development of efficient catalytic copolymerization system in this field.
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6
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Synthesis of functional polyethylene via scandium catalysted copolymerization of ethylene with triphenylamine- or carbazole-substituted styrene derivatives. POLYMER 2022. [DOI: 10.1016/j.polymer.2022.124548] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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7
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Zhang Y, Wang T, Bai J, You W. Repurposing Mitsunobu Reactions as a Generic Approach toward Polyethylene Derivatives. ACS Macro Lett 2022; 11:33-38. [PMID: 35574803 DOI: 10.1021/acsmacrolett.1c00689] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Broad scope of functionality and controllable degree of functionalization are intriguing goals for the development of polar-group-functionalized polyethylene materials. Herein, we propose a generic strategy of using widely available starting materials (i.e., poly(ethylene-co-vinyl acetate), EVA) and mild Mitsunobu functionalization conditions to prepare over 30 polyethylene derivatives. No noble transition metal catalysts (e.g., Ru, Mo, Pd, etc.) or corrosive/explosive reagents (e.g., HBr, NaN3, C2H4, H2, etc.) are used in the synthesis, while functional groups such as azide, aldehyde, norbornene, and thiol can be easily installed, with tunable content as high as 18 mol %. Using this practical method, we successfully prepared polyethylene-derivatized membranes with excellent antimicrobial and fluorescent properties.
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Affiliation(s)
- Yin Zhang
- Beijing National Laboratory for Molecular Sciences (BNLMS), CAS Key Laboratory of Engineering Plastics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People’s Republic of China
- University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
| | - Ting Wang
- Beijing National Laboratory for Molecular Sciences (BNLMS), CAS Key Laboratory of Engineering Plastics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People’s Republic of China
- University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
| | - Jing Bai
- Beijing National Laboratory for Molecular Sciences (BNLMS), CAS Key Laboratory of Engineering Plastics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People’s Republic of China
- University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
| | - Wei You
- Beijing National Laboratory for Molecular Sciences (BNLMS), CAS Key Laboratory of Engineering Plastics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People’s Republic of China
- University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
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8
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Dong J, Yang D, Wang B. Homo‐ and Copolymerization of Norbornene with Allyl Palladium and Nickel Complexes Bearing Imidazo[1,5‐a]pyridine Sulfonate Ligands. Eur J Inorg Chem 2021. [DOI: 10.1002/ejic.202100736] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Jie Dong
- State Key Laboratory of Elemento-Organic Chemistry College of Chemistry Nankai University Tianjin 300071 PR China
| | - Dandan Yang
- State Key Laboratory of Elemento-Organic Chemistry College of Chemistry Nankai University Tianjin 300071 PR China
| | - Baiquan Wang
- State Key Laboratory of Elemento-Organic Chemistry College of Chemistry Nankai University Tianjin 300071 PR China
- State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic Chemistry Chinese Academy of Sciences Shanghai 200032 PR China
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9
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Liao D, Behzadi S, Hong C, Zou C, Qasim M, Chen M. Influence of thiopheneyl‐based twisted backbone on the properties of α‐diimine nickel catalysts in ethylene polymerization. Appl Organomet Chem 2021. [DOI: 10.1002/aoc.6406] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Daohong Liao
- Department of Polymer Science and Engineering University of Science and Technology of China Hefei China
| | - Shabnam Behzadi
- Department of Polymer Science and Engineering University of Science and Technology of China Hefei China
| | - Changwen Hong
- Department of Polymer Science and Engineering University of Science and Technology of China Hefei China
| | - Chen Zou
- Department of Polymer Science and Engineering University of Science and Technology of China Hefei China
| | - Muhammad Qasim
- Department of Polymer Science and Engineering University of Science and Technology of China Hefei China
| | - Min Chen
- Institutes of Physical Science and Information Technology Anhui University Hefei China
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10
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Zhu N, Liang T, Huang Y, Pang W, Chen M, Tan C. Influences of Ligand Backbone Substituents on Phosphinecarbonylpalladium and -nickel Catalysts for Ethylene Polymerization and Copolymerization with Polar Monomers. Inorg Chem 2021; 60:13080-13090. [PMID: 34357773 DOI: 10.1021/acs.inorgchem.1c01490] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A series of phosphinecarbonylpalladium and -nickel catalysts bearing various substituents on the ligand backbone were prepared, characterized, and used in ethylene polymerization and copolymerization with polar monomers. The Pd and Ni catalysts can achieve high activities as well as high polymer molecular weights in both ethylene polymerization and copolymerization with polar monomers. The electron-donating group from the carbonyl side can effectively increase the polymer molecular weights. Utilization of a cyclic backbone structure can increase the catalytic activities at the expense of the polymer molecular weights. Moreover, installation of a pyridyl moiety in the ligand backbone can enable Lewis acid responsiveness and can enhance the polymerization activities. These results suggest the importance of the ligand backbone for the properties of catalysts in ethylene polymerization and copolymerization reactions.
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Affiliation(s)
- Ningning Zhu
- Hefei National Laboratory for Physical Sciences at the Microscale, CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei 230026, China
| | - Tao Liang
- Hefei National Laboratory for Physical Sciences at the Microscale, CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei 230026, China
| | - Yongshuang Huang
- Hefei National Laboratory for Physical Sciences at the Microscale, CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei 230026, China
| | - Wenmin Pang
- Hefei National Laboratory for Physical Sciences at the Microscale, CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei 230026, China
| | - Min Chen
- Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Institutes of Physical Science and Information Technology, Anhui University, Hefei, Anhui 230601, China
| | - Chen Tan
- Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Institutes of Physical Science and Information Technology, Anhui University, Hefei, Anhui 230601, China
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11
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Yu F, Li P, Xu M, Xu G, Na Y, Zhang S, Wang F, Tan C. Iminopyridyl ligands bearing polyethylene glycol unit for nickel catalyzed ethylene polymerization. POLYMER 2021. [DOI: 10.1016/j.polymer.2021.124023] [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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12
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13
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14
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Versatile PNPO ligands for palladium and nickel catalyzed ethylene polymerization and copolymerization with polar monomers. J Catal 2021. [DOI: 10.1016/j.jcat.2020.11.023] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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15
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Zhou G, Cui L, Mu H, Jian Z. Custom-made polar monomers utilized in nickel and palladium promoted olefin copolymerization. Polym Chem 2021. [DOI: 10.1039/d1py00492a] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
In this review, the functions of custom-made polar monomers are insightfully emphasized in the preparation of functional polyolefins.
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Affiliation(s)
- Guanglin Zhou
- State Key Laboratory of Polymer Physics and Chemistry
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022
- China
| | - Lei Cui
- State Key Laboratory of Polymer Physics and Chemistry
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022
- China
| | - Hongliang Mu
- State Key Laboratory of Polymer Physics and Chemistry
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022
- China
| | - Zhongbao Jian
- State Key Laboratory of Polymer Physics and Chemistry
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022
- China
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16
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Dong J, Wang B. Homo- and copolymerization of norbornene using tridentate IzQO palladium catalysts with dimethylaminoethyl as a side arm. Polym Chem 2021. [DOI: 10.1039/d1py00699a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Rigid IzQO–Pd catalysts were synthesized by Rh(iii)-catalyzed C–H/alkyne annulation and applied for the homo- and copolymerizations of norbornene with polar vinyl monomers.
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Affiliation(s)
- Jie Dong
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, PR China
| | - Baiquan Wang
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, PR China
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, PR China
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17
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Doerr AM, Burroughs JM, Gitter SR, Yang X, Boydston AJ, Long BK. Advances in Polymerizations Modulated by External Stimuli. ACS Catal 2020. [DOI: 10.1021/acscatal.0c03802] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Alicia M. Doerr
- Department of Chemistry, University of Tennessee, Knoxville, Tennessee 37996-1600, United States
| | - Justin M. Burroughs
- Department of Chemistry, University of Tennessee, Knoxville, Tennessee 37996-1600, United States
| | - Sean R. Gitter
- Department of Chemistry, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States
| | - Xuejin Yang
- Department of Chemistry, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States
| | - Andrew J. Boydston
- Department of Chemistry, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States
- Department of Chemical and Biological Engineering and Department of Materials Science and Engineering, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States
| | - Brian K. Long
- Department of Chemistry, University of Tennessee, Knoxville, Tennessee 37996-1600, United States
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18
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Mehmood A, Xu X, Raza W, Kim KH, Luo Y. Mechanistic Studies for Palladium Catalyzed Copolymerization of Ethylene with Vinyl Ethers. Polymers (Basel) 2020; 12:E2401. [PMID: 33086515 PMCID: PMC7603233 DOI: 10.3390/polym12102401] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Accepted: 10/16/2020] [Indexed: 11/17/2022] Open
Abstract
The mechanism of ethylene with vinyl ether (VE, CH2=CHOEt) copolymerization catalyzed by phosphine-sulfonate palladium complex (A) was investigated by density functional theory (DFT) calculation. On achieving an agreement between theory and experiment, it is found that the favorable 1,2-selective insertion of VE into the complex A originates from stronger hydrogen interaction between the oxygen atom of VE and the ancillary ligand of catalyst A. Additionally, VE insertion is easier into the ethylene pre-inserted intermediate than that into the catalyst to form the resultant copolymers with the major units of OEt in chain and minor units of OEt at the chain end. The effect of β-OEt and β-H elimination was explored to elucidate chain termination and the molecular weight of copolymers. Furthermore, a family of cationic catalysts has been demonstrated to copolymerize ethylene with VE along with our modified cationic complex B with higher incorporation of VE and reactivity in comparison with complex A, which was modelled computationally by increasing the strong interactions between the catalyst and monomer moiety. Other than VE, the activity of cationic complex B for copolymerization of vinyl chloride and methacrylate is also computed successfully.
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Affiliation(s)
- Andleeb Mehmood
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China; (A.M.); (X.X.); (W.R.)
| | - Xiaowei Xu
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China; (A.M.); (X.X.); (W.R.)
| | - Waseem Raza
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China; (A.M.); (X.X.); (W.R.)
| | - Ki-Hyun Kim
- Department of Civil and Environmental Engineering, Hanyang University, 222 Wangsimni-Ro, Seoul 04763, Korea
| | - Yi Luo
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China; (A.M.); (X.X.); (W.R.)
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Yang XW, Li DH, Song AX, Liu FS. "Bulky-Yet-Flexible" α-Diimine Palladium-Catalyzed Reductive Heck Cross-Coupling: Highly Anti-Markovnikov-Selective Hydroarylation of Alkene in Air. J Org Chem 2020; 85:11750-11765. [PMID: 32808522 DOI: 10.1021/acs.joc.0c01509] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
To pursue a highly regioselective and efficient reductive Heck reaction, a series of moisture- and air-stable α-diimine palladium precatalysts were rationally designed, readily synthesized, and fully characterized. The relationship between the structures of the palladium complexes and the catalytic properties was investigated. It was revealed that the"bulky-yet-flexible"palladium complexes allowed highly anti-Markovnikov-selective hydroarylation of alkenes with (hetero)aryl bromides under aerobic conditions. Further synthetic application of the present protocol could provide rapid and straightforward access to functional and biologically active molecules.
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Affiliation(s)
- Xu-Wen Yang
- School of Chemistry and Chemical Engineering, Guangdong Cosmetics Engineering & Technology Research Center, Guangdong Pharmaceutical University, Zhongshan, Guangdong 528458, China
| | - Dong-Hui Li
- School of Chemistry and Chemical Engineering, Guangdong Cosmetics Engineering & Technology Research Center, Guangdong Pharmaceutical University, Zhongshan, Guangdong 528458, China
| | - A-Xiang Song
- School of Chemistry and Chemical Engineering, Guangdong Cosmetics Engineering & Technology Research Center, Guangdong Pharmaceutical University, Zhongshan, Guangdong 528458, China
| | - Feng-Shou Liu
- School of Chemistry and Chemical Engineering, Guangdong Cosmetics Engineering & Technology Research Center, Guangdong Pharmaceutical University, Zhongshan, Guangdong 528458, China
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20
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Chen L, Wang S, Zhang Y, Li Y, Ge X, Li G, Wang L. N-Hydroxyphthalimide catalyzed hydrazination of polyethylene glycol. REACT FUNCT POLYM 2020. [DOI: 10.1016/j.reactfunctpolym.2020.104666] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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21
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Xu M, Yu F, Li P, Xu G, Zhang S, Wang F. Enhancing Chain Initiation Efficiency in the Cationic Allyl-Nickel Catalyzed (Co)Polymerization of Ethylene and Methyl Acrylate. Inorg Chem 2020; 59:4475-4482. [DOI: 10.1021/acs.inorgchem.9b03647] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Mengli Xu
- Institutes of Physical Science and Information Technology, School of Computer Science and Technology, Anhui University, Hefei 230601, Anhui, China
| | - Fan Yu
- Institutes of Physical Science and Information Technology, School of Computer Science and Technology, Anhui University, Hefei 230601, Anhui, China
| | - Pei Li
- Institutes of Physical Science and Information Technology, School of Computer Science and Technology, Anhui University, Hefei 230601, Anhui, China
| | - Guoyong Xu
- Institutes of Physical Science and Information Technology, School of Computer Science and Technology, Anhui University, Hefei 230601, Anhui, China
| | - Shaojie Zhang
- Institutes of Physical Science and Information Technology, School of Computer Science and Technology, Anhui University, Hefei 230601, Anhui, China
| | - Fuzhou Wang
- Institutes of Physical Science and Information Technology, School of Computer Science and Technology, Anhui University, Hefei 230601, Anhui, China
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22
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Deshmukh SS, Gaikwad SR, Gonnade RG, Pandole SP, Chikkali SH. Pd-Iminocarboxylate Complexes and Their Behavior in Ethylene Polymerization. Chem Asian J 2020; 15:398-405. [PMID: 31863706 DOI: 10.1002/asia.201901501] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Revised: 12/19/2019] [Indexed: 11/07/2022]
Abstract
Designing co-catalyst-free late transition metal complexes for ethylene polymerization is a challenging task at the interface of organometallic and polymer chemistry. Herein, a set of new, co-catalyst-free, single-component catalytic systems for ethylene polymerization have been unraveled. Treatment of anthranilic acid with various aldehydes produced four iminocarboxylate ligands (L1-L4) in very good to excellent yield (75-92 %). The existence of 2-((2-methoxybenzylidene)amino) benzoic acid (L1) has been unambiguously demonstrated using NMR spectroscopy, MS and single-crystal X-ray diffraction. A neutral Pd-iminocarboxylate complex [{N O}PdMe(L1)] (N O=κ2 -N,O-ArCHNC6 H4 CO2 with Ar=2-MeOC6 H4 ) C1 was prepared by treating stoichiometric amount of L1.Na with palladium precursor. The identity of C1 was confirmed by 1-2D NMR spectroscopy and single-crystal X-ray diffraction studies. Along the same lines, palladium complexes C2-C4 were prepared from ligands L2-L4 respectively. In-situ high-pressure NMR investigations revealed that these Pd complexes are amenable to ethylene insertion and undergo facile β-H elimination to produce propylene. These palladium complexes were then evaluated in ethylene polymerization reaction and various reaction parameters were screened. When C1-C4 were exposed to ethylene pressures of 10-50 bar, formation of low-molecular-weight polyethylene was observed.
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Affiliation(s)
- Satej S Deshmukh
- Polymer Science and Engineering Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune, 411008, India
| | - Shahaji R Gaikwad
- Polymer Science and Engineering Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune, 411008, India
| | - Rajesh G Gonnade
- Center for Material Characterization, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune, 411008, India
| | - Satish P Pandole
- Central NMR facility, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune, 411008, India
| | - Samir H Chikkali
- Polymer Science and Engineering Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune, 411008, India.,Academy of Scientific and Innovative Research (AcSIR), Anusandhan Bhawan, 2 Rafi Marg, New Delhi, 110001, India
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23
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Wu Q, Wang W, Xu G, Pang W, Li Y, Tan C, Wang F. Bulky iminophosphine‐based nickel and palladium catalysts bearing 2,6‐dibenzhydryl groups for ethylene oligo‐/polymerization. Appl Organomet Chem 2020. [DOI: 10.1002/aoc.5428] [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)
- Qitong Wu
- School of Chemistry and Chemical EngineeringHefei University of Technology Hefei 230009 China
| | - Wenbing Wang
- School of Chemistry and Chemical EngineeringHefei University of Technology Hefei 230009 China
| | - Guoyong Xu
- Institutes of Physical Science and Information TechnologyAnhui University Hefei 230601 , Anhui China
| | - Wenmin Pang
- Department of Polymer Science and EngineeringUniversity of Science and Technology of China Hefei 230026 China
| | - Yougui Li
- School of Chemistry and Chemical EngineeringHefei University of Technology Hefei 230009 China
| | - Chen Tan
- Institutes of Physical Science and Information TechnologyAnhui University Hefei 230601 , Anhui China
| | - Fuzhou Wang
- Institutes of Physical Science and Information TechnologyAnhui University Hefei 230601 , Anhui China
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Zhao W, Dong B, Liu H, Hu Y, Zhang X. Living coordination–insertion copolymerization of 1-hexene and ligated α-olefins using an α-diimine nickel catalyst and preparation of metal–ligand coordination crosslinked polymers. Polym Chem 2020. [DOI: 10.1039/d0py00224k] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Metal–ligand coordination crosslinked polymers were prepared by coordination–insertion copolymerization of 1-hexene and ligated α-olefins.
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Affiliation(s)
- Wenpeng Zhao
- CAS Key Laboratory of High-Performance
- Synthetic Rubber and its Composite Materials
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun
| | - Bo Dong
- CAS Key Laboratory of High-Performance
- Synthetic Rubber and its Composite Materials
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun
| | - Heng Liu
- CAS Key Laboratory of High-Performance
- Synthetic Rubber and its Composite Materials
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun
| | - Yanming Hu
- CAS Key Laboratory of High-Performance
- Synthetic Rubber and its Composite Materials
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun
| | - Xuequan Zhang
- CAS Key Laboratory of High-Performance
- Synthetic Rubber and its Composite Materials
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun
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25
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Li M, Wang R, Eisen MS, Park S. Light-mediated olefin coordination polymerization and photoswitches. Org Chem Front 2020. [DOI: 10.1039/d0qo00426j] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
This review outlines photoswitchable, transition metal-based olefin coordination polymerization catalysts ranging from homogeneous to heterogeneous, and monometallic to bimetallic regimes.
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Affiliation(s)
- Mingyuan Li
- Department of Chemistry
- Guangdong Technion Israel Institute of Technology
- Shantou 515063
- China
| | - Ruibin Wang
- Department of Chemistry
- Guangdong Technion Israel Institute of Technology
- Shantou 515063
- China
| | - Moris S. Eisen
- Department of Chemistry
- Guangdong Technion Israel Institute of Technology
- Shantou 515063
- China
- Schulich Faculty of Chemistry
| | - Sehoon Park
- Department of Chemistry
- Guangdong Technion Israel Institute of Technology
- Shantou 515063
- China
- Technion-Israel Institute of Technology
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