1
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Kemper G, Hölscher M, Leitner W. Pd(II)-catalyzed carboxylation of aromatic C─H bonds with CO 2. SCIENCE ADVANCES 2023; 9:eadf2966. [PMID: 36735781 PMCID: PMC9897662 DOI: 10.1126/sciadv.adf2966] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/12/2022] [Accepted: 12/30/2022] [Indexed: 06/18/2023]
Abstract
The carboxylation of nonactivated C─H bonds provides an attractive yet hitherto largely elusive chemical process to synthesize carboxylic acids by incorporation of CO2 into the chemical value chain. Here, we report on the realization of such a reaction using simple and nonactivated arenes as starting materials. A computationally designed Pd(II) complex acts as organometallic single-component catalyst, and apart from a base, necessary for thermodynamic stabilization of the intermediates, no other additives or coreagents are required. Turnover numbers up to 102 and high regioselectivities are achieved. The potential of this catalytic reaction for "green chemistry" is demonstrated by the synthesis of veratric acid, an intermediate for pharmaceutical production, from CO2 and veratrol.
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Affiliation(s)
- Gregor Kemper
- Institut für Technische und Makromolekulare Chemie, RWTH Aachen University, Aachen, Germany
| | - Markus Hölscher
- Institut für Technische und Makromolekulare Chemie, RWTH Aachen University, Aachen, Germany
| | - Walter Leitner
- Institut für Technische und Makromolekulare Chemie, RWTH Aachen University, Aachen, Germany
- Max Planck Institute for Chemical Energy Conversion, Mülheim an der Ruhr, Germany
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2
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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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3
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Cao L, Cai Z, Li M. Synthesis and Characterization of Phosphinobenzenamine Palladium Complexes and Their Application in Ethylene Polymerization and Copolymerization with Polar Monomers. Organometallics 2022. [DOI: 10.1021/acs.organomet.2c00389] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Affiliation(s)
- Lixin Cao
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, P. R. China
| | - Zhengguo Cai
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, P. R. China
| | - Mingyuan Li
- Department of Chemistry, Guangdong Technion - Israel Institute of Technology, Shantou 515063, P. R. China
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4
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Karimi M, Arabi H, Sadjadi S. New advances in olefin homo and copolymerization using neutral, single component palladium/nickel complexes ligated by a phosphine-sulfonate. J Catal 2022. [DOI: 10.1016/j.jcat.2022.05.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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5
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Mote NR, Gaikwad SR, Khopade KV, Gonnade RG, Chikkali SH. Controlled di-lithiation enabled synthesis of phosphine-sulfonamide ligands and implications in ethylene oligomerization. Dalton Trans 2021; 50:3717-3723. [PMID: 33634816 DOI: 10.1039/d1dt00093d] [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
Catalyst design for ethylene oligomerization has attracted significant interest. Herein, we report the synthesis of phosphine-sulfonamide-derived palladium complexes and examine their performance in ethylene oligomerization. Arresting a dilithiation intermediate of N-(2-bromophenyl)-4-methylbenzenesulfonamide (1) at -84 °C selectively produced N-(2-(bis(2-methoxyphenyl)phosphanyl)phenyl)-4-methylbenzenesulfonamide (L1A). However, the same reaction at -41 °C delivered a different ligand; 2-(bis(2-methoxyphenyl)phosphanyl)-4-methyl-N-phenylbenzenesulfonamide (L2A). The generality of our strategy has been demonstrated by preparing N-(2-(diphenylphosphanyl)phenyl)-4-methylbenzenesulfonamide (L1B) and 2-(diphenylphosphanyl)-4-methyl-N-phenylbenzenesulfonamide (L2B). Subsequently, L1A and L1B were treated with a palladium precursor to yield 5-membered complexes C1 and C2, respectively. In contrast, L2A upon treatment with palladium produced a 6-membered metal complex C3. Thus, a small library of 7 palladium complexes (C1-C7) were synthesized by varying the donor moiety (pyridine, DMSO, and acetonitrile). The identity of palladium complexes was unambiguously ascertained using a combination of spectroscopic and analytical methods, including single-crystal X-ray diffraction. The performance of the complexes C1-C7 was investigated in ethylene oligomerization and almost all of them were found to be active. The resultant ethylene oligomers were characterized using 1H and 13C NMR, MALDI-ToF-MS, and GPC. Detailed screening of reaction parameters revealed 100 °C and 40 bars ethylene to be optimal conditions. Complex C5 outperformed other complexes and produced ethylene oligomers with a molecular weight of 1000-1900 g mol-1.
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Affiliation(s)
- Nilesh R Mote
- Polyolefin Laboratory, Polymer Science and Engineering Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune-411008, India. and Academy of Scientific and Innovative Research (AcSIR), Anusandhan Bhawan, 2 Rafi Marg, New Delhi-110001, India
| | - Shahaji R Gaikwad
- Polyolefin Laboratory, Polymer Science and Engineering Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune-411008, India. and Academy of Scientific and Innovative Research (AcSIR), Anusandhan Bhawan, 2 Rafi Marg, New Delhi-110001, India
| | - Kishor V Khopade
- Polyolefin Laboratory, Polymer Science and Engineering Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune-411008, India. and Academy of Scientific and Innovative Research (AcSIR), Anusandhan Bhawan, 2 Rafi Marg, New Delhi-110001, India
| | - Rajesh G Gonnade
- Center for Materials Characterization, CSIR-National Chemical Laboratory, Dr Homi Bhabha Road, Pune-411008, India
| | - Samir H Chikkali
- Polyolefin Laboratory, Polymer Science and Engineering Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune-411008, India. and Academy of Scientific and Innovative Research (AcSIR), Anusandhan Bhawan, 2 Rafi Marg, New Delhi-110001, India
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6
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Wang B, Liu H, Zhang C, Tang T, Zhang X. Propylene homopolymerization and copolymerization with ethylene by acenaphthene-based α-diimine nickel complexes to access EPR-like elastomers. Polym Chem 2021. [DOI: 10.1039/d1py00923k] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of acenaphthene-based α-diimine nickel complexes were synthesized and subsequently used for accessing branched EPR-like elastomers with different compositions and chain structures.
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Affiliation(s)
- Beibei Wang
- Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun, 130022, Jilin, China
- University of Science and Technology of China, Hefei, 230026, Anhui, PR China
- Key Laboratory of Rubber-Plastics, Ministry of Education/Shandong Provincial Key Laboratory of Rubber-Plastics, Qingdao University of Science & Technology, Qingdao, 266042, China
| | - Heng Liu
- Key Laboratory of Rubber-Plastics, Ministry of Education/Shandong Provincial Key Laboratory of Rubber-Plastics, Qingdao University of Science & Technology, Qingdao, 266042, China
| | - Chunyu Zhang
- Key Laboratory of Rubber-Plastics, Ministry of Education/Shandong Provincial Key Laboratory of Rubber-Plastics, Qingdao University of Science & Technology, Qingdao, 266042, China
| | - Tao Tang
- Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun, 130022, Jilin, China
- University of Science and Technology of China, Hefei, 230026, Anhui, PR China
| | - Xuequan Zhang
- Key Laboratory of Rubber-Plastics, Ministry of Education/Shandong Provincial Key Laboratory of Rubber-Plastics, Qingdao University of Science & Technology, Qingdao, 266042, China
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7
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Mehmood A, Xu X, Raza W, Kukkar D, Kim KH, Luo Y. Computational study of the copolymerization mechanism of ethylene with methyl 2-acetamidoacrylate catalyzed by phosphine-sulfonate palladium complexes. NEW J CHEM 2021. [DOI: 10.1039/d1nj02698d] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this research, a computational study is carried out to describe the insertion of a vital monomer, methyl 2-acetamidoacrylate (MAAA), into catalyst A (A = [(POOMe,OMe)PdMe]) (POOMe,OMe = 2[2-MeOC6H4](2-SO3-5-MeC6H4)P).
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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
| | - Xiaowei Xu
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
| | - Waseem Raza
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
| | - Deepak Kukkar
- Department of Civil and Environmental Engineering, Hanyang University, 222 Wangsimni-Ro, Seoul, Korea
| | - Ki-Hyun Kim
- Department of Civil and Environmental Engineering, Hanyang University, 222 Wangsimni-Ro, Seoul, Korea
| | - Yi Luo
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
- PetroChina Petrochemical Research Institute, Beijing 102206, China
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8
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Varmužová V, Horký F, Štěpnička P. Synthesis and coordination of a hybrid phosphinoferrocene sulfonamide ligand. NEW J CHEM 2021. [DOI: 10.1039/d1nj00080b] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A hybrid, phosphinoferrocene sulfonamide ligand was synthesised and studied as a ligand in Pd(ii) complexes, which were structurally characterised. Selected compounds were studied by cyclic voltammetry.
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Affiliation(s)
- Věra Varmužová
- Department of Inorganic Chemistry
- Faculty of Science
- Charles University
- Hlavova 2030
- Czech Republic
| | - Filip Horký
- Department of Inorganic Chemistry
- Faculty of Science
- Charles University
- Hlavova 2030
- Czech Republic
| | - Petr Štěpnička
- Department of Inorganic Chemistry
- Faculty of Science
- Charles University
- Hlavova 2030
- Czech Republic
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9
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Luo W, Wang Z, Cao X, Liang D, Wei M, Yin K, Li L. Construction of Benzo-1,2,3-thiazaphosphole Heterocycles by Annulations of ortho-Phosphinoarenesulfonyl Fluorides with Trimethylsilyl Azide. J Org Chem 2020; 85:14785-14794. [PMID: 32885966 DOI: 10.1021/acs.joc.0c01309] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Annulations of ortho-phosphinoarenesulfonyl fluorides with trimethylsilyl azide were developed to access an unprecedented benzo-1,2,3-thiazaphosphole heterocycle. A corresponding reaction mechanism was proposed and further elucidated by experimental and computational studies. The reaction proceeds through a Staudinger-type iminophosphorane intermediate followed by intramolecular trapping with sulfonyl fluoride.
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Affiliation(s)
- Wenjun Luo
- PCFM Lab and GDHPRC Lab, School of Chemistry, Sun Yat-sen University, Guangzhou 510275, P. R. China
| | - Zhenguo Wang
- PCFM Lab and GDHPRC Lab, School of Chemistry, Sun Yat-sen University, Guangzhou 510275, P. R. China
| | - Xiaohui Cao
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, P. R. China
| | - Dacheng Liang
- PCFM Lab and GDHPRC Lab, School of Chemistry, Sun Yat-sen University, Guangzhou 510275, P. R. China
| | - Mingjie Wei
- PCFM Lab and GDHPRC Lab, School of Chemistry, Sun Yat-sen University, Guangzhou 510275, P. R. China
| | - Keshu Yin
- PCFM Lab and GDHPRC Lab, School of Chemistry, Sun Yat-sen University, Guangzhou 510275, P. R. China
| | - Le Li
- PCFM Lab and GDHPRC Lab, School of Chemistry, Sun Yat-sen University, Guangzhou 510275, P. R. China
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10
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Voit G, Jenthra S, Hölscher M, Weyhermüller T, Leitner W. Reversible Insertion of Carbon Dioxide at Phosphine Sulfonamido PdII–Aryl Complexes. Organometallics 2020. [DOI: 10.1021/acs.organomet.0c00560] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Gregor Voit
- Institut für Technische und Makromolekulare Chemie, RWTH Aachen University, Worringerweg 2, 52074 Aachen, Germany
| | - Sangeth Jenthra
- Institut für Technische und Makromolekulare Chemie, RWTH Aachen University, Worringerweg 2, 52074 Aachen, Germany
| | - Markus Hölscher
- Institut für Technische und Makromolekulare Chemie, RWTH Aachen University, Worringerweg 2, 52074 Aachen, Germany
| | - Thomas Weyhermüller
- Max Planck Institute for Chemical Energy Conversion, Mülheim an der Ruhr, Germany
| | - Walter Leitner
- Institut für Technische und Makromolekulare Chemie, RWTH Aachen University, Worringerweg 2, 52074 Aachen, Germany
- Max Planck Institute for Chemical Energy Conversion, Mülheim an der Ruhr, Germany
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11
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Park DA, Byun S, Ryu JY, Lee J, Lee J, Hong S. Abnormal N-Heterocyclic Carbene–Palladium Complexes for the Copolymerization of Ethylene and Polar Monomers. ACS Catal 2020. [DOI: 10.1021/acscatal.0c00802] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Da-Ae Park
- Department of Chemistry, Gwangju Institute of Science and Technology, 123 Cheomdan-gwagiro, Buk-gu, Gwangju 61005, Republic of Korea
| | - Seunghwan Byun
- Department of Chemistry, Gwangju Institute of Science and Technology, 123 Cheomdan-gwagiro, Buk-gu, Gwangju 61005, Republic of Korea
| | - Ji Yeon Ryu
- Department of Chemistry, Chonnam National University, 77 Yongbong-ro,
Buk-gu, Gwangju 61186, Republic of Korea
| | - Jinyoung Lee
- Catalyst R&D, LG Chem Research Park, 188 Munji-ro, Yuseong-gu, Daejeon 34122, Republic of Korea
| | - Junseong Lee
- Department of Chemistry, Chonnam National University, 77 Yongbong-ro,
Buk-gu, Gwangju 61186, Republic of Korea
| | - Sukwon Hong
- Department of Chemistry, Gwangju Institute of Science and Technology, 123 Cheomdan-gwagiro, Buk-gu, Gwangju 61005, Republic of Korea
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology, 123 Cheomdan-gwagiro, Buk-gu, Gwangju 61005, Republic of Korea
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12
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Navarro M, Rosar V, Montini T, Milani B, Albrecht M. Olefin Dimerization and Isomerization Catalyzed by Pyridylidene Amide Palladium Complexes. Organometallics 2018. [DOI: 10.1021/acs.organomet.8b00422] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Miquel Navarro
- Department für Chemie und Biochemie, Universität Bern, CH−3012 Bern, Switzerland
| | - Vera Rosar
- Department für Chemie und Biochemie, Universität Bern, CH−3012 Bern, Switzerland
- Department of Chemical and Pharmaceutical Sciences, University of Trieste, via Licio Giorgieri 1, 34127 Trieste, Italy
| | - Tiziano Montini
- Department of Chemical and Pharmaceutical Sciences, University of Trieste, via Licio Giorgieri 1, 34127 Trieste, Italy
| | - Barbara Milani
- Department of Chemical and Pharmaceutical Sciences, University of Trieste, via Licio Giorgieri 1, 34127 Trieste, Italy
| | - Martin Albrecht
- Department für Chemie und Biochemie, Universität Bern, CH−3012 Bern, Switzerland
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13
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Wimmer FP, Caporaso L, Cavallo L, Mecking S, Falivene L. Mechanism of Insertion Polymerization of Allyl Ethers. Macromolecules 2018. [DOI: 10.1021/acs.macromol.8b00783] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Florian P. Wimmer
- Chair of Chemical Materials Science, Department of Chemistry, University of Konstanz, 78464 Konstanz, Germany
- Physical Sciences and Engineering Division, Kaust Catalysis Center (KCC), King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia
| | - Lucia Caporaso
- Dipartimento di Chimica e Biologia, Università di Salerno, Via Papa Paolo Giovanni II, I-84084 Fisciano, Italy
| | - Luigi Cavallo
- Physical Sciences and Engineering Division, Kaust Catalysis Center (KCC), King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia
| | - Stefan Mecking
- Chair of Chemical Materials Science, Department of Chemistry, University of Konstanz, 78464 Konstanz, Germany
| | - Laura Falivene
- Physical Sciences and Engineering Division, Kaust Catalysis Center (KCC), King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia
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14
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Mitsushige Y, Yasuda H, Carrow BP, Ito S, Kobayashi M, Tayano T, Watanabe Y, Okuno Y, Hayashi S, Kuroda J, Okumura Y, Nozaki K. Methylene-Bridged Bisphosphine Monoxide Ligands for Palladium-Catalyzed Copolymerization of Ethylene and Polar Monomers. ACS Macro Lett 2018; 7:305-311. [PMID: 35632905 DOI: 10.1021/acsmacrolett.8b00034] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A series of palladium complexes bearing a bisphosphine monoxide with a methylene linker, that is, [κ2-P,O-(R12P)CH2P(O)R22]PdMe(2,6-lutidine)][BArF4] (Pd/BPMO), were synthesized and evaluated as catalysts for the homopolymerization of ethylene and the copolymerization of ethylene and polar monomers. X-ray crystallographic analyses revealed that these Pd/BPMO complexes exhibit significantly narrower bite angles and longer Pd-O bonds than Pd/BPMO complexes bearing a phenylene linker, while maintaining almost constant Pd-P bond lengths. Among the complexes synthesized, menthyl-substituted complex 3f (R1 = (1R,2S,5R)-2-isopropyl-5-methylcyclohexan-1-yl; R2 = Me) showed the best catalytic performance in the homo- and copolymerization in terms of molecular weight and polymerization activity. Meanwhile, complex 3e (R1 = t-Bu; R2 = Me) exhibited a markedly higher incorporation of comonomers in the copolymerization of ethylene and allyl acetate (≤12.0 mol %) or methyl methacrylate (≤0.6 mol %). The catalytic system represents one of the first examples of late-transition-metal complexes bearing an alkylene-bridged bidentate ligand that afford high-molecular-weight copolymers from the copolymerization of ethylene and polar monomers.
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Affiliation(s)
- Yusuke Mitsushige
- Department of Chemistry and Biotechnology, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Hina Yasuda
- Department of Chemistry and Biotechnology, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Brad P. Carrow
- Department of Chemistry, Princeton University, Princeton, New Jersey, United States
| | - Shingo Ito
- Department of Chemistry and Biotechnology, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Minoru Kobayashi
- Japan Polychem Corporation, 1 Toho-cho, Yokkaichi, Mie 510-0848, Japan
| | - Takao Tayano
- Japan Polychem Corporation, 1 Toho-cho, Yokkaichi, Mie 510-0848, Japan
| | - Yumiko Watanabe
- Computational Science and Technology Information Center, Showa Denko K.K., 1-1-1 Ohnodai, Midori-ku, Chiba, Chiba 267-0056, Japan
| | - Yoshishige Okuno
- Computational Science and Technology Information Center, Showa Denko K.K., 1-1-1 Ohnodai, Midori-ku, Chiba, Chiba 267-0056, Japan
| | - Shinya Hayashi
- Institute for Advanced and Core Technology, Showa Denko K.K., 2 Nakanosu, Oita, Oita 870-1809, Japan
| | - Junichi Kuroda
- Institute for Advanced and Core Technology, Showa Denko K.K., 2 Nakanosu, Oita, Oita 870-1809, Japan
| | - Yoshikuni Okumura
- Institute for Advanced and Core Technology, Showa Denko K.K., 2 Nakanosu, Oita, Oita 870-1809, Japan
| | - Kyoko Nozaki
- Department of Chemistry and Biotechnology, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
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15
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Wilders AM, Contrella ND, Sampson JR, Zheng M, Jordan RF. Allosteric Effects in Ethylene Polymerization Catalysis. Enhancement of Performance of Phosphine-Phosphinate and Phosphine-Phosphonate Palladium Alkyl Catalysts by Remote Binding of B(C6F5)3. Organometallics 2017. [DOI: 10.1021/acs.organomet.7b00815] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Alison M. Wilders
- Department of Chemistry, University of Chicago, 5735 S. Ellis Avenue, Chicago, Illinois 60637, United States
| | - Nathan D. Contrella
- Department of Chemistry, University of Chicago, 5735 S. Ellis Avenue, Chicago, Illinois 60637, United States
| | - Jessica R. Sampson
- Department of Chemistry, University of Chicago, 5735 S. Ellis Avenue, Chicago, Illinois 60637, United States
| | - Mingfang Zheng
- Department of Chemistry, University of Chicago, 5735 S. Ellis Avenue, Chicago, Illinois 60637, United States
| | - Richard F. Jordan
- Department of Chemistry, University of Chicago, 5735 S. Ellis Avenue, Chicago, Illinois 60637, United States
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16
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Bézier D, Daugulis O, Brookhart M. Polymerization of Ethylene Catalyzed by Phosphine-Iminophosphorane Palladium Complexes. Organometallics 2017. [DOI: 10.1021/acs.organomet.7b00391] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- David Bézier
- Center for Polymer Chemistry,
Department of Chemistry, University of Houston, Houston, Texas 77204-5003, United States
| | - Olafs Daugulis
- Center for Polymer Chemistry,
Department of Chemistry, University of Houston, Houston, Texas 77204-5003, United States
| | - Maurice Brookhart
- Center for Polymer Chemistry,
Department of Chemistry, University of Houston, Houston, Texas 77204-5003, United States
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17
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Xiong S, Guo L, Zhang S, Liu Z. Asymmetric Cationic [P, O] Type Palladium Complexes in Olefin Homopolymerization and Copolymerization. CHINESE J CHEM 2017. [DOI: 10.1002/cjoc.201600898] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Shuoyan Xiong
- Key Laboratory of Soft Matter Chemistry, Chinese Academy of Sciences, Department of Polymer Science and Engineering; University of Science and Technology of China; Hefei Anhui 230026 China
| | - Lihua Guo
- School of Chemistry and Chemical Engineering; Qufu Normal University; Qufu Shandong 273165 China
| | - Shumiao Zhang
- School of Chemistry and Chemical Engineering; Qufu Normal University; Qufu Shandong 273165 China
| | - Zhe Liu
- School of Chemistry and Chemical Engineering; Qufu Normal University; Qufu Shandong 273165 China
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Chen Z, Liu W, Daugulis O, Brookhart M. Mechanistic Studies of Pd(II)-Catalyzed Copolymerization of Ethylene and Vinylalkoxysilanes: Evidence for a β-Silyl Elimination Chain Transfer Mechanism. J Am Chem Soc 2016; 138:16120-16129. [PMID: 27960299 DOI: 10.1021/jacs.6b10462] [Citation(s) in RCA: 99] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Copolymerizations of ethylene with vinyltrialkoxysilanes are reported using both a "traditional" cationic Pd(II) aryldiimine catalyst, t-1 (aryl = 2,6-diisopropylphenyl), and a "sandwich-type" aryldiimine catalyst, s-2 (aryl = 8-tolylnaphthyl). Incorporation levels of vinyltrialkoxysilanes between 0.25 and 2.0 mol % were achieved with remarkably little rate retardation relative to ethylene homopolymerizations. In the case of the traditional catalyst system, molecular weights decrease as the level of comonomer increases and only one trialkoxysilyl group is incorporated per chain. Molecular weight distributions of ca. 2 are observed. For the sandwich catalyst, higher molecular weights are observed with many more trialkoxysilyl groups incorporated per chain. Polymers with molecular weight distributions of ca. 1.2-1.4 are obtained. Detailed NMR mechanistic studies have revealed the formation of intermediate π-complexes of the type (diimine)Pd(alkyl)(vinyltrialkoxysilane)+. 1,2-Migratory insertions of these complexes occur with rates similar to ethylene insertion and result in formation of observable five-membered chelate intermediates. These chelates are rapidly opened with ethylene forming alkyl ethylene complexes, a requirement for chain growth. An unusual β-silyl elimination mechanism was shown to be responsible for chain transfer and formation of low molecular weight copolymers in the traditional catalyst system, t-1. This chain transfer process is retarded in the sandwich system. Relative binding affinities of ethylene and vinyltrialkoxysilanes to the cationic palladium center have been determined. The quantitative mechanistic studies reported fully explain the features of the bulk polymerization results.
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Affiliation(s)
- Zhou Chen
- Center for Polymer Chemistry, Department of Chemistry, University of Houston , Houston, Texas 77204-5003, United States
| | - Weijun Liu
- Department of Chemistry, University of North Carolina at Chapel Hill , Chapel Hill, North Carolina 27599-3290, United States
| | - Olafs Daugulis
- Center for Polymer Chemistry, Department of Chemistry, University of Houston , Houston, Texas 77204-5003, United States
| | - Maurice Brookhart
- Center for Polymer Chemistry, Department of Chemistry, University of Houston , Houston, Texas 77204-5003, United States.,Department of Chemistry, University of North Carolina at Chapel Hill , Chapel Hill, North Carolina 27599-3290, United States
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Jian Z, Mecking S. Short-Chain Branched Polar-Functionalized Linear Polyethylene via “Tandem Catalysis”. Macromolecules 2016. [DOI: 10.1021/acs.macromol.6b00581] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Zhongbao Jian
- Chair
of Chemical Materials Science, Department of Chemistry, University of Konstanz, Universitätsstrasse 10, 78457 Konstanz, Germany
| | - Stefan Mecking
- Chair
of Chemical Materials Science, Department of Chemistry, University of Konstanz, Universitätsstrasse 10, 78457 Konstanz, Germany
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20
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Wu Z, Chen M, Chen C. Ethylene Polymerization and Copolymerization by Palladium and Nickel Catalysts Containing Naphthalene-Bridged Phosphine–Sulfonate Ligands. Organometallics 2016. [DOI: 10.1021/acs.organomet.6b00076] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Zixia Wu
- Key Laboratory
of Soft Matter Chemistry, Chinese Academy of Sciences, Department
of Polymer Science and Engineering, University of Science and Technology of China, Hefei 230026, People’s Republic of China
| | - Min Chen
- Key Laboratory
of Soft Matter Chemistry, Chinese Academy of Sciences, Department
of Polymer Science and Engineering, University of Science and Technology of China, Hefei 230026, People’s Republic of China
| | - Changle Chen
- Key Laboratory
of Soft Matter Chemistry, Chinese Academy of Sciences, Department
of Polymer Science and Engineering, University of Science and Technology of China, Hefei 230026, People’s Republic of China
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21
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Guo L, Dai S, Sui X, Chen C. Palladium and Nickel Catalyzed Chain Walking Olefin Polymerization and Copolymerization. ACS Catal 2015. [DOI: 10.1021/acscatal.5b02426] [Citation(s) in RCA: 362] [Impact Index Per Article: 40.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Lihua Guo
- School
of Pertrochemical Engineering, Changzhou University, Changzhou 213164, China
- School
of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, China
| | - Shengyu Dai
- Key
Laboratory of Soft Matter Chemistry, Chinese Academy of Sciences,
Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei 230026, China
| | - Xuelin Sui
- Key
Laboratory of Soft Matter Chemistry, Chinese Academy of Sciences,
Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei 230026, China
| | - Changle Chen
- Key
Laboratory of Soft Matter Chemistry, Chinese Academy of Sciences,
Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei 230026, China
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22
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Sui X, Dai S, Chen C. Ethylene Polymerization and Copolymerization with Polar Monomers by Cationic Phosphine Phosphonic Amide Palladium Complexes. ACS Catal 2015. [DOI: 10.1021/acscatal.5b01490] [Citation(s) in RCA: 116] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Xuelin Sui
- Key Laboratory of Soft Matter
Chemistry, Chinese Academy of Sciences, Department of Polymer Science
and Engineering, University of Science and Technology of China, Hefei 230026, People’s Republic of China
| | - Shengyu Dai
- Key Laboratory of Soft Matter
Chemistry, Chinese Academy of Sciences, Department of Polymer Science
and Engineering, University of Science and Technology of China, Hefei 230026, People’s Republic of China
| | - Changle Chen
- Key Laboratory of Soft Matter
Chemistry, Chinese Academy of Sciences, Department of Polymer Science
and Engineering, University of Science and Technology of China, Hefei 230026, People’s Republic of China
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