1
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Wu XT, Yang C, Xi JS, Shi C, Du FS, Li ZC. Enabling Closed-Loop Circularity of "Non-Polymerizable" α, β-Conjugated Lactone Towards High-Performance Polyester with the Assistance of Cyclopentadiene. Angew Chem Int Ed Engl 2024; 63:e202404179. [PMID: 38488293 DOI: 10.1002/anie.202404179] [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: 02/29/2024] [Indexed: 04/17/2024]
Abstract
Chemical recycling of polymers to monomers presents a promising solution to the escalating crisis associated with plastic waste. Despite considerable progress made in this field, the primary efforts have been focused on redesigning new monomers to produce readily recyclable polymers. In contrast, limited research into the potential of seemingly "non-polymerizable" monomers has been conducted. Herein, we propose a paradigm that leverages a "chaperone"-assisted strategy to establish closed-loop circularity for a "non-polymerizable" α, β-conjugated lactone, 5,6-dihydro-2H-pyran-2-one (DPO). The resulting PDPO, a structural analogue of poly(δ-valerolactone) (PVL), exhibits enhanced thermal properties with a melting point (Tm) of 114 °C and a decomposition temperature (Td,5%) of 305 °C. Notably, owing to the structural similarity between DPO and δ-VL, the copolymerization generates semi-crystalline P(DPO-co-VL)s irrespective of the DPO incorporation ratio. Intriguingly, the inherent C=C bonds in P(DPO-co-VL)s enable their convenient post-functionalization via Michael-addition reaction. Lastly, PDPO was demonstrated to be chemically recyclable via ring-closing metathesis (RCM), representing a significant step towards the pursuit of enabling the closed-loop circularity of "non-polymerizable" lactones without altering the ultimate polymer structure.
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Affiliation(s)
- Xiao-Tong Wu
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, Center for Soft Matter Science and Engineering, College of Chemistry & Molecular Engineering, Peking University, Beijing, 100871, China
| | - Chun Yang
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, Center for Soft Matter Science and Engineering, College of Chemistry & Molecular Engineering, Peking University, Beijing, 100871, China
| | - Jian-Shu Xi
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, Center for Soft Matter Science and Engineering, College of Chemistry & Molecular Engineering, Peking University, Beijing, 100871, China
| | - Changxia Shi
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, Center for Soft Matter Science and Engineering, College of Chemistry & Molecular Engineering, Peking University, Beijing, 100871, China
| | - Fu-Sheng Du
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, Center for Soft Matter Science and Engineering, College of Chemistry & Molecular Engineering, Peking University, Beijing, 100871, China
| | - Zi-Chen Li
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, Center for Soft Matter Science and Engineering, College of Chemistry & Molecular Engineering, Peking University, Beijing, 100871, China
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2
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Lepage ML, Alachouzos G, Hermens JGH, Elders N, van den Berg KJ, Feringa BL. Electron-Poor Butenolides: The Missing Link between Acrylates and Maleic Anhydride in Radical Polymerization. J Am Chem Soc 2023; 145:17211-17219. [PMID: 37498188 PMCID: PMC10416300 DOI: 10.1021/jacs.3c04314] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Indexed: 07/28/2023]
Abstract
Butenolides are a class of 5-membered lactones that hold great potential as bio-based monomers to replace oil-derived acrylates, of which they are cyclic analogues. Despite this structural resemblance, the reactivity of the unsaturated ester moiety of electron-poor butenolides leans toward that of maleic anhydride, another essential monomer that does not homopolymerize but copolymerizes in a highly alternating fashion with polarized electron-rich comonomers. By studying the reactivity of 5-methoxy and 5-acyloxy butenolides through a combination of kinetics and density functional theory (DFT) experiments, we explain why electron-poor butenolides constitute a missing link between acrylates and maleic anhydride in radical polymerization.
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Affiliation(s)
- Mathieu L. Lepage
- Stratingh
Institute for Chemistry, Advanced Research Center Chemical Building
Blocks Consortium (ARC CBBC), University
of Groningen, Nijenborgh
4, 9747 AG Groningen, The Netherlands
| | - Georgios Alachouzos
- Stratingh
Institute for Chemistry, Advanced Research Center Chemical Building
Blocks Consortium (ARC CBBC), University
of Groningen, Nijenborgh
4, 9747 AG Groningen, The Netherlands
| | - Johannes G. H. Hermens
- Stratingh
Institute for Chemistry, Advanced Research Center Chemical Building
Blocks Consortium (ARC CBBC), University
of Groningen, Nijenborgh
4, 9747 AG Groningen, The Netherlands
| | - Niels Elders
- Department
Resin Technology, Akzo Nobel Car Refinishes
BV, Rijksstraatweg 31, 2171 AJ Sassenheim, The Netherlands
| | - Keimpe J. van den Berg
- Department
Resin Technology, Akzo Nobel Car Refinishes
BV, Rijksstraatweg 31, 2171 AJ Sassenheim, The Netherlands
| | - Ben L. Feringa
- Stratingh
Institute for Chemistry, Advanced Research Center Chemical Building
Blocks Consortium (ARC CBBC), University
of Groningen, Nijenborgh
4, 9747 AG Groningen, The Netherlands
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3
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Yato H, Oto K, Takasu A, Higuchi M. Catenane formation of a cyclic poly(alkyl sorbate) via chain-growth polymerization induced by an N-heterocyclic carbene and ring-closing without extreme dilution. RSC Adv 2023; 13:13616-13623. [PMID: 37152560 PMCID: PMC10155494 DOI: 10.1039/d3ra01614e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2023] [Accepted: 04/18/2023] [Indexed: 05/09/2023] Open
Abstract
1,3-Di-tert-butylimidazol-2-ylidene (NHCtBu), a typical N-heterocyclic carbene (NHC), was previously found to induce the anionic chain-growth polymerization of ethyl sorbate (ES) in the presence of an aluminum Lewis acid, i.e., methylaluminum bis(2,6-di-tert-butyl-4-methylphenoxide) (MAD), in which the neighboring of α-terminal dienolate with a propagating anion induced cyclization without highly diluted conditions, after monomer depletion, to give the cyclic poly(ES). In this paper, we report that catenane formation occurs by two-step polymerization of ethyl sorbate (ES), in which, after complete monomer (ES) consumption ([ES]0/[NHCtBu]0 = 100/1) in toluene followed by purification by reprecipitation, a second addition of ES monomer ([ES]0/[ NHCtBu]0 = 20/1) in another pot (in toluene or tetrahydrofuran (THF)) resulted in catenane formation, namely a polycatenane. TEM images of a sample from the second step polymerization in THF revealed particles of polycatenane structure consisting of cyclic poly(ES) with sizes ranging from 200 to 1000 nm, showing that this NHCtBu triggered chain polymerization and successive cyclization without highly diluted conditions enabled us to fabricate the intended polycatenane in the successive two-step polymerization.
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Affiliation(s)
- Hirotake Yato
- Division of Soft Materials, Department of Engineering, Nagoya Institute of Technology Gokiso-cho, Showa-ku Nagoya 466-8555 Japan
| | - Kota Oto
- Division of Soft Materials, Department of Engineering, Nagoya Institute of Technology Gokiso-cho, Showa-ku Nagoya 466-8555 Japan
| | - Akinori Takasu
- Division of Soft Materials, Department of Engineering, Nagoya Institute of Technology Gokiso-cho, Showa-ku Nagoya 466-8555 Japan
| | - Masahiro Higuchi
- Division of Soft Materials, Department of Engineering, Nagoya Institute of Technology Gokiso-cho, Showa-ku Nagoya 466-8555 Japan
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4
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Xia Y, Yuan P, Zhang Y, Sun Y, Hong M. Converting Non-strained γ-Valerolactone and Derivatives into Sustainable Polythioesters via Isomerization-driven Cationic Ring-Opening Polymerization of Thionolactone Intermediate. Angew Chem Int Ed Engl 2023; 62:e202217812. [PMID: 36757807 DOI: 10.1002/anie.202217812] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Revised: 01/17/2023] [Accepted: 02/09/2023] [Indexed: 02/10/2023]
Abstract
This contribution reports the efficient conversion of γ-valerolactone and its derivatives, abundant but unexplored renewable feedstocks, into sustainable and degradable polythioesters via the establishment of the first isomerization-driven ring-opening polymerizations (IROPs) of corresponding thionolactone intermediates. The key to this success relies on the development of a new simple and robust [Et3 O]+ [B(C6 F5 )4 ]- cationic initiator which possesses high activity, exclusive selectivity, living nature, and broad scope of thionolactones. A complete inversion of configuration during IROP of enantiopure γ-thionovalerolactone is also disclosed, affording isotactic semicrystalline polythioesters (Tm =87.0 °C) with mechanical property compared well to the representative commodity polyolefins. The formation of a highly crystalline supramolecular stereocomplex with enhanced thermal property (Tm =117.6 °C) has also been revealed.
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Affiliation(s)
- Yongliang Xia
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, 200032, China
| | - Pengjun Yuan
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, 200032, China
| | - Yanping Zhang
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, 200032, China
| | - Yangyang Sun
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, 200032, China
| | - Miao Hong
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, 200032, China.,School of Chemistry and Material Sciences, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, 1 Sub-lane Xiangshan, Hangzhou, 310024, China
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5
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Antunes MM, Silva AF, Fernandes A, Valente AA. γ-Valerolactone synthesis from α-angelica lactone and levulinic acid over biobased multifunctional nanohybrid catalysts. Catal Today 2022. [DOI: 10.1016/j.cattod.2021.08.027] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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6
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Li C, Zhao W, He J, Zhang Y, Zhang W. Single‐Step Expeditious Synthesis of Diblock Copolymers with Different Morphologies by Lewis Pair Polymerization‐Induced Self‐Assembly. Angew Chem Int Ed Engl 2022; 61:e202202448. [DOI: 10.1002/anie.202202448] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Indexed: 11/10/2022]
Affiliation(s)
- Chengkai Li
- State Key Laboratory of Supramolecular Structure and Materials. College of Chemistry Jilin University Changchun Jilin 130012 China
| | - Wuchao Zhao
- State Key Laboratory of Supramolecular Structure and Materials. College of Chemistry Jilin University Changchun Jilin 130012 China
| | - Jianghua He
- State Key Laboratory of Supramolecular Structure and Materials. College of Chemistry Jilin University Changchun Jilin 130012 China
| | - Yuetao Zhang
- State Key Laboratory of Supramolecular Structure and Materials. College of Chemistry Jilin University Changchun Jilin 130012 China
| | - Wangqing Zhang
- Key Laboratory of Functional Polymer Materials of the Ministry of Education Institute of Polymer Chemistry College of Chemistry Nankai University Tianjin 300071 China
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7
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Li S, Chen Q, Yang J, Zhang J. Palladium‐Catalyzed Enantioselective γ‐Arylation of β,γ‐Unsaturated Butenolides. Angew Chem Int Ed Engl 2022; 61:e202202046. [DOI: 10.1002/anie.202202046] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Indexed: 12/19/2022]
Affiliation(s)
- Sanliang Li
- Department of Chemistry Fudan University 2005 Songhu Road Shanghai 200438 China
| | - Qiaoyu Chen
- Academy for Engineering and Technology Fudan University 2005 Songhu Road Shanghai 200438 China
| | - Junfeng Yang
- Department of Chemistry Fudan University 2005 Songhu Road Shanghai 200438 China
| | - Junliang Zhang
- Department of Chemistry Fudan University 2005 Songhu Road Shanghai 200438 China
- School of Chemistry and Chemical Engineering Henan Normal University Xinxiang Henan 453007 China
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8
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Robescu MS, Cendron L, Bacchin A, Wagner K, Reiter T, Janicki I, Merusic K, Illek M, Aleotti M, Bergantino E, Hall M. Asymmetric Proton Transfer Catalysis by Stereocomplementary Old Yellow Enzymes for C═C Bond Isomerization Reaction. ACS Catal 2022. [DOI: 10.1021/acscatal.2c01110] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Marina S. Robescu
- Department of Biology, University of Padova, Padova, Province of Padova 35131, Italy
| | - Laura Cendron
- Department of Biology, University of Padova, Padova, Province of Padova 35131, Italy
| | - Arianna Bacchin
- Institute of Chemistry, University of Graz, Graz, Styria 8010, Austria
| | - Karla Wagner
- Institute of Chemistry, University of Graz, Graz, Styria 8010, Austria
| | - Tamara Reiter
- Institute of Chemistry, University of Graz, Graz, Styria 8010, Austria
| | - Ignacy Janicki
- Department of Heteroorganic Chemistry, Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, Lodz, Lodz Province 90-001, Poland
| | - Kemal Merusic
- Institute of Chemistry, University of Graz, Graz, Styria 8010, Austria
| | - Maximilian Illek
- Institute of Chemistry, University of Graz, Graz, Styria 8010, Austria
| | - Matteo Aleotti
- Institute of Chemistry, University of Graz, Graz, Styria 8010, Austria
| | - Elisabetta Bergantino
- Department of Biology, University of Padova, Padova, Province of Padova 35131, Italy
| | - Mélanie Hall
- Institute of Chemistry, University of Graz, Graz, Styria 8010, Austria
- Field of Excellence BioHealth, University of Graz, Graz, Styria 8010, Austria
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9
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Li C, Zhao W, He J, Zhang Y, Zhang W. Single‐Step Expeditious Synthesis of Diblock Copolymers with Different Morphologies by Lewis Pair Polymerization‐Induced Self‐Assembly. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202202448] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Chengkai Li
- State Key Laboratory of Supramolecular Structure and Materials. College of Chemistry Jilin University Changchun Jilin 130012 China
| | - Wuchao Zhao
- State Key Laboratory of Supramolecular Structure and Materials. College of Chemistry Jilin University Changchun Jilin 130012 China
| | - Jianghua He
- State Key Laboratory of Supramolecular Structure and Materials. College of Chemistry Jilin University Changchun Jilin 130012 China
| | - Yuetao Zhang
- State Key Laboratory of Supramolecular Structure and Materials. College of Chemistry Jilin University Changchun Jilin 130012 China
| | - Wangqing Zhang
- Key Laboratory of Functional Polymer Materials of the Ministry of Education Institute of Polymer Chemistry College of Chemistry Nankai University Tianjin 300071 China
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10
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Zhang ZH, Wang X, Weng B, Zhang Y, Zhang G, Hong M. Zinc-Mediated Allylation-Lactonization One-Pot Reaction to Methylene Butyrolactones: Renewable Monomers for Sustainable Acrylic Polymers with Closed-Loop Recyclability. ACS POLYMERS AU 2022; 2:266-274. [PMID: 36855566 PMCID: PMC9955236 DOI: 10.1021/acspolymersau.2c00001] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Despite biomass-derived methylene butyrolactone monomers having great potential in substituting the petroleum-based methacrylates for synthesizing the sustainable acrylic polymers, the possible industrial production of these cyclic monomers is unfortunately not practical due to moderate overall yields and harsh reaction conditions or a time-consuming multistep process. Here we report a convenient and effective synthetic approach to a series of biomass-derived methylene butyrolactone monomers via a zinc-mediated allylation-lactonization one-pot reaction of biorenewable aldehydes with ethyl 2-(bromomethyl)acrylate. Under simple room-temperature sonication conditions, near-quantitative conversions (>90%) can be accomplished within 5-30 min, providing pure products with high isolated yields of 70-80%. Their efficient polymerizations with a high degree of control and complete chemoselectivity were enabled by the judiciously chosen Lewis pair catalyst based on methylaluminum bis(2,6-di-tert-butyl-4-methylphenoxide) [MeAl(BHT)2] Lewis acid and 3-diisopropyl-4,5-dimethylimidazol-2-ylidene (I i Pr) Lewis base, affording new poly(methylene butyrolactone)s with high thermal stability and thermal properties tuned in a wide range as well as pendant vinyl groups for postfunctionalization. Through the development of an effective depolymerization setup (370-390 °C, ca. 100 mTorr, 1 h, a muffle furnace), thermal depolymerizations of these polymers have been achieved with monomer recovery up to 99.8%, thus successfully constructing sustainable acrylic polymers with closed-loop recyclability.
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Affiliation(s)
- Zhen-Hua Zhang
- State
Key Laboratory of Organometallic Chemistry, Shanghai Institute of
Organic Chemistry, University of Chinese
Academy of Sciences, Chinese Academy of Sciences, Shanghai 200032, China
| | - Xing Wang
- State
Key Laboratory of Organometallic Chemistry, Shanghai Institute of
Organic Chemistry, University of Chinese
Academy of Sciences, Chinese Academy of Sciences, Shanghai 200032, China
| | - Biwei Weng
- State
Key Laboratory of Organometallic Chemistry, Shanghai Institute of
Organic Chemistry, University of Chinese
Academy of Sciences, Chinese Academy of Sciences, Shanghai 200032, China
| | - Yixin Zhang
- State
Key Laboratory of Organometallic Chemistry, Shanghai Institute of
Organic Chemistry, University of Chinese
Academy of Sciences, Chinese Academy of Sciences, Shanghai 200032, China
| | - Guozhu Zhang
- State
Key Laboratory of Organometallic Chemistry, Shanghai Institute of
Organic Chemistry, University of Chinese
Academy of Sciences, Chinese Academy of Sciences, Shanghai 200032, China
| | - Miao Hong
- State
Key Laboratory of Organometallic Chemistry, Shanghai Institute of
Organic Chemistry, University of Chinese
Academy of Sciences, Chinese Academy of Sciences, Shanghai 200032, China,School
of Chemistry and Material Sciences, Hangzhou Institute for Advanced
Study, University of Chinese Academy of
Sciences, 1 Sub-lane Xiangshan, Hangzhou 310024, China,
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11
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Li S, Chen Q, Yang J, Zhang J. Palladium‐Catalyzed Enantioselective γ‐Arylation of β,γ‐Unsaturated Butenolides. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202202046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Sanliang Li
- Department of Chemistry Fudan University 2005 Songhu Road Shanghai 200438 China
| | - Qiaoyu Chen
- Academy for Engineering and Technology Fudan University 2005 Songhu Road Shanghai 200438 China
| | - Junfeng Yang
- Department of Chemistry Fudan University 2005 Songhu Road Shanghai 200438 China
| | - Junliang Zhang
- Department of Chemistry Fudan University 2005 Songhu Road Shanghai 200438 China
- School of Chemistry and Chemical Engineering Henan Normal University Xinxiang Henan 453007 China
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12
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Zhao W, Wang Q, He J, Zhang Y. Boron-Based Lewis Pairs Catalyzed Living, Regioselective and Topology-Controlled Polymerization of (E, E)-alkyl Sorbates. Macromol Rapid Commun 2022; 43:e2200088. [PMID: 35363417 DOI: 10.1002/marc.202200088] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Revised: 03/16/2022] [Indexed: 11/06/2022]
Abstract
It remains as a great challenge to realize living and controlled polymerization of renewable monomers by the boron-based Lewis pairs. Here we employ strong nucleophilic N-heterocyclic olefins (NHOs) or N-heterocyclic carbenes (NHCs) as Lewis bases (LBs), and boron-based compounds as Lewis acids (LAs) to construct LPs for polymerization of alkyl sorbates, including (E, E)-methyl sorbate (MS) and (E, E)-ethyl sorbate (ES). Systematic investigation reveal that the combinations of B(C6 F5 )3 with appropriate acidity and steric hindrance, and strong nucleophilic NHOs promote living and controlled polymerization of alkyl sorbates in 100% 1,4-addition manner, furnishing polymers with predicted molecular weight (Mw up to 56.6 kg/mol) and narrow molecular weight distribution (Đ as low as 1.12). Furthermore, topology analysis shows that NHC1/B(C6 F5 )3 LP produced PMS possessing cyclic structure. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Wuchao Zhao
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, Jilin, 130012, China
| | - Qianyi Wang
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, Jilin, 130012, China
| | - Jianghua He
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, Jilin, 130012, China
| | - Yuetao Zhang
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, Jilin, 130012, China
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13
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Yuan P, Sun Y, Xu X, Luo Y, Hong M. Towards high-performance sustainable polymers via isomerization-driven irreversible ring-opening polymerization of five-membered thionolactones. Nat Chem 2022; 14:294-303. [PMID: 34824460 DOI: 10.1038/s41557-021-00817-9] [Citation(s) in RCA: 53] [Impact Index Per Article: 26.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Accepted: 09/21/2021] [Indexed: 11/09/2022]
Abstract
The development of sustainable polymers that possess useful material properties competitive with existing petroleum-derived polymers is a crucial goal but remains a formidable challenge for polymer science. Here we demonstrate that irreversible ring-opening polymerization (IROP) of biomass-derived five-membered thionolactones is an effective and robust strategy for the polymerization of non-strained five-membered rings-these polymerizations are commonly thermodynamically forbidden under ambient conditions, at industrially relevant temperatures of 80-100 °C. Computational studies reveal that the selective IROP of these thionolactones is thermodynamically driven by S/O isomerization during the ring-opening process. IROP of γ-thionobutyrolactone, a representative non-strained thionolactone, affords a sustainable polymer from renewable resources that possesses external-stimuli-triggered degradability. This poly(thiolactone) also exhibits high performance, with its key thermal and mechanical properties comparing well to those of commercial petroleum-based low-density polyethylene. This IROP strategy will enable conversion of five-membered lactones, generally unachievable by other polymerization methods, into sustainable polymers with a range of potential applications.
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Affiliation(s)
- Pengjun Yuan
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, China
| | - Yangyang Sun
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, China
| | - Xiaowei Xu
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian, China
| | - Yi Luo
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian, China.,PetroChina Petrochemical Research Institute, Beijing, China
| | - Miao Hong
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, China.
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14
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Fe doped aluminoborate PKU-1 catalysts for the ketalization of glycerol to solketal: Unveiling the effects of iron composition and boron. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2021.08.056] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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15
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Guan Y, Chang K, Sun Q, Xu X. Progress in Rare-Earth Metal-Based Lewis Pair Chemistry. CHINESE J ORG CHEM 2022. [DOI: 10.6023/cjoc202112008] [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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16
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One‐Step Synthesis of Lignin‐Based Triblock Copolymers as High‐Temperature and UV‐Blocking Thermoplastic Elastomers. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202114946] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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17
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Wan Y, He J, Zhang Y, Chen EYX. One-Step Synthesis of Lignin-Based Triblock Copolymers as High-Temperature and UV-Blocking Thermoplastic Elastomers. Angew Chem Int Ed Engl 2021; 61:e202114946. [PMID: 34904337 DOI: 10.1002/anie.202114946] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2021] [Indexed: 11/08/2022]
Abstract
This work utilizes frustrated Lewis pairs consisting of tethered bis-organophosphorus superbases and a bulky organoaluminum to furnish the highly efficient synthesis of well-defined triblock copolymers via one-step block copolymerization of lignin-based syringyl methacrylate and n-butyl acrylate, through di-initiation and compounded sequence control. The resulting thermoplastic elastomers (TPEs) exhibit microphase separation and much superior mechanical properties (elongation at break up to 2091 %, tensile strength up to 11.5 MPa, and elastic recovery up to 95 % after 10 cycles) to those of methyl methacrylate-based TPEs. More impressively, lignin-based tri-BCPs can maintain TPEs properties up to 180 °C, exhibit high transparency and nearly 100 % UV shield, suggesting potential applications in temperature-resistant and optical devices.
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Affiliation(s)
- Yi Wan
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, Jilin, 130012, China
| | - Jianghua He
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, Jilin, 130012, China
| | - Yuetao Zhang
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, Jilin, 130012, China
| | - Eugene Y-X Chen
- Department of Chemistry, Colorado State University, Fort Collins, CO 80523-1872, USA
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18
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Synthesis and Antibacterial Activity of Selenium-functionalized Poly(ε-caprolactone). CHINESE JOURNAL OF POLYMER SCIENCE 2021. [DOI: 10.1007/s10118-021-2638-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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19
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Yin L, Liu L, Zhang N. Brush-like polymers: design, synthesis and applications. Chem Commun (Camb) 2021; 57:10484-10499. [PMID: 34550120 DOI: 10.1039/d1cc03940g] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
With the development of controlled polymerisation, almost all polymerisation strategies have been successfully transplanted to surface-initiated polymerisation. The resulting polymer brushes have emerged as an effective tool for surface functionalization and modulation of the surface properties of materials. To meet various demands it is possible to tailor a material surface with polymer brushes that have diverse dimensionalities, morphologies and compositions. The crowded environment within polymer brushes as well as the stretched conformation of polymer chains sometimes provide unique physicochemical properties, which lead to the delicate creation of inorganic-organic hybridised nanostructures, anti-fouling coatings, biomedical carriers, and materials for use in lubrication, photonics and energy storage. So far, challenges remain in the high-precision synthesis and topological control needed to realize extended applications of polymer brushes. In this Feature Article, we highlight the topology, potential application prospects and various synthetic protocols, particularly for recently established methods, for the efficient synthesis of polymer brushes, as well as their benefits and limitations.
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Affiliation(s)
- Liying Yin
- Department of Chemistry, Northeast Normal University, Changchun 130024, P. R. China.
| | - Lin Liu
- Department of Chemistry, Northeast Normal University, Changchun 130024, P. R. China.
| | - Ning Zhang
- Department of Chemistry, Northeast Normal University, Changchun 130024, P. R. China.
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20
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Zhang ZH, Wang X, Wang XJ, Li Y, Hong M. Tris(2,4-difluorophenyl)borane/Triisobutylphosphine Lewis Pair: A Thermostable and Air/Moisture-Tolerant Organic Catalyst for the Living Polymerization of Acrylates. Macromolecules 2021. [DOI: 10.1021/acs.macromol.1c01356] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Zhen-Hua Zhang
- Tianjin Key Lab of Composite & Functional Materials, School of Materials Science and Engineering, Tianjin University, Tianjin 300350, China
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai 200032, China
| | - Xing Wang
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai 200032, China
| | - Xiao-Jun Wang
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai 200032, China
| | - Yuesheng Li
- Tianjin Key Lab of Composite & Functional Materials, School of Materials Science and Engineering, Tianjin University, Tianjin 300350, China
| | - Miao Hong
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai 200032, China
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21
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Su Y, Zhao Y, Zhang H, Luo Y, Xu X. Rare-Earth Aryloxide/Ylide-Functionalized Phosphine Frustrated Lewis Pairs for the Polymerization of 4-Vinylpyridine and Its Derivatives. Macromolecules 2021. [DOI: 10.1021/acs.macromol.1c01339] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Yujie Su
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, P. R. China
| | - Yanan Zhao
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, P. R. China
| | - Hongyue Zhang
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, P. R. China
| | - Yi Luo
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, P. R. China
- PetroChina Petrochemical Research Institute, Beijing 102206, P. R. China
| | - Xin Xu
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, P. R. China
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22
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Bai Y, Wang H, He J, Zhang Y, Chen EYX. Dual-initiating and living frustrated Lewis pairs: expeditious synthesis of biobased thermoplastic elastomers. Nat Commun 2021; 12:4874. [PMID: 34385442 PMCID: PMC8360971 DOI: 10.1038/s41467-021-25069-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Accepted: 07/13/2021] [Indexed: 11/29/2022] Open
Abstract
Biobased poly(γ-methyl-α-methylene-γ-butyrolactone) (PMMBL), an acrylic polymer bearing a cyclic lactone ring, has attracted increasing interest because it not only is biorenewable but also exhibits superior properties to petroleum-based linear analog poly(methyl methacrylate) (PMMA). However, such property enhancement has been limited to resistance to heat and solvent, and mechanically both types of polymers are equally brittle. Here we report the expeditious synthesis of well-defined PMMBL-based ABA tri-block copolymers (tri-BCPs)-enabled by dual-initiating and living frustrated Lewis pairs (FLPs)-which are thermoplastic elastomers showing much superior mechanical properties, especially at high working temperatures (80-130 °C), to those of PMMA-based tri-BCPs. The FLPs consist of a bulky organoaluminum Lewis acid and a series of newly designed bis(imino)phosphine superbases bridged by an alkyl linker, which promote living polymerization of MMBL. Uniquely, such bisphosphine superbases initiate the chain growth from both P-sites concurrently, enabling the accelerated synthesis of tri-BCPs in a one-pot, two-step procedure. The results from mechanistic studies, including the single crystal structure of the dually initiated active species, detailed polymerizations, and kinetic studies confirm the livingness of the polymerization and support the proposed polymerization mechanism featuring the dual initiation and subsequent chain growth from both P-sites of the superbase di-initiator.
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Affiliation(s)
- Yun Bai
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, Jilin, China
| | - Huaiyu Wang
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, Jilin, China
| | - Jianghua He
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, Jilin, China
| | - Yuetao Zhang
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, Jilin, China.
| | - Eugene Y-X Chen
- Department of Chemistry, Colorado State University, Fort Collins, CO, USA
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23
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Dutta S, Bhat NS. Recent Advances in the Value Addition of Biomass‐Derived Levulinic Acid: A Review Focusing on its Chemical Reactivity Patterns. ChemCatChem 2021. [DOI: 10.1002/cctc.202100032] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Saikat Dutta
- Department of Chemistry National Institute of Technology Karnataka Surathkal Mangalore 575025 India
| | - Navya Subray Bhat
- Department of Chemistry National Institute of Technology Karnataka Surathkal Mangalore 575025 India
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24
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Tan X, Wang H. Frustrated Lewis Pair Catalysis: It Takes Two to Make a Thing Go Right. CHINESE J CHEM 2021. [DOI: 10.1002/cjoc.202000570] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Xinyue Tan
- Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University Songhu Road 2005 Shanghai 200438 China
| | - Huadong Wang
- Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University Songhu Road 2005 Shanghai 200438 China
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25
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McGraw ML, Clarke RW, Chen EYX. Synchronous Control of Chain Length/Sequence/Topology for Precision Synthesis of Cyclic Block Copolymers from Monomer Mixtures. J Am Chem Soc 2021; 143:3318-3322. [PMID: 33641330 DOI: 10.1021/jacs.1c00561] [Citation(s) in RCA: 44] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Precision synthesis of cyclic polymers with predictable molecular weight and low dispersity is a challenging task, particularly concerning cyclic polar vinyl polymers through a rapid chain-growth mechanism and without high dilution. Harder yet is the precision synthesis of cyclic block copolymers (cBCPs), ideally from comonomer mixtures. Here we report that Lewis pair polymerization (LPP) capable of thermodynamically and kinetically compounded sequence control successfully addressed this longstanding challenge. Thus, LPP of acrylate/methacrylate mixtures under ambient temperature and normal concentration conditions rapidly and selectively affords well-defined cBCPs with high molecular weight (Mn = 247 kg/mol) and low dispersity (Đ = 1.04) in one step. Such cBCPs have been characterized by multiple techniques, including direct structural observation by imaging.
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Affiliation(s)
- Michael L McGraw
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523-1872, United States
| | - Ryan W Clarke
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523-1872, United States
| | - Eugene Y-X Chen
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523-1872, United States
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26
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Fouilloux H, Thomas CM. Production and Polymerization of Biobased Acrylates and Analogs. Macromol Rapid Commun 2021; 42:e2000530. [DOI: 10.1002/marc.202000530] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2020] [Revised: 11/23/2020] [Indexed: 12/13/2022]
Affiliation(s)
- Hugo Fouilloux
- PSL University Chimie ParisTech CNRS Institut de Recherche de Chimie Paris Paris 75005 France
| | - Christophe M. Thomas
- PSL University Chimie ParisTech CNRS Institut de Recherche de Chimie Paris Paris 75005 France
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27
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Zhou L, Wang Z, Xu G, Lv C, Wang Q. Structure and activity relationship studies of N-heterocyclic olefin and thiourea/urea catalytic systems: application in ring-opening polymerization of lactones. Polym Chem 2021. [DOI: 10.1039/d0py01747g] [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
Structure–activity relationship studies of N-heterocyclic olefin and thiourea/urea catalytic systems were performed and applied to ROP of lactones.
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Affiliation(s)
- Li Zhou
- Key Laboratory of Biobased Materials
- Qingdao Institute of Bioenergy and Bioprocess Technology
- Chinese Academy of Sciences
- Qingdao
- China
| | - Zhenyu Wang
- Key Laboratory of Biobased Materials
- Qingdao Institute of Bioenergy and Bioprocess Technology
- Chinese Academy of Sciences
- Qingdao
- China
| | - Guangqiang Xu
- Key Laboratory of Biobased Materials
- Qingdao Institute of Bioenergy and Bioprocess Technology
- Chinese Academy of Sciences
- Qingdao
- China
| | - Chengdong Lv
- Key Laboratory of Biobased Materials
- Qingdao Institute of Bioenergy and Bioprocess Technology
- Chinese Academy of Sciences
- Qingdao
- China
| | - Qinggang Wang
- Key Laboratory of Biobased Materials
- Qingdao Institute of Bioenergy and Bioprocess Technology
- Chinese Academy of Sciences
- Qingdao
- China
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28
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Bai Y, Wang H, He J, Zhang Y. Living polymerization of naturally renewable butyrolactone-based vinylidenes mediated by a frustrated Lewis pair. Polym Chem 2021. [DOI: 10.1039/d1py00924a] [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
The frustrated Lewis pair composed of an organophosphorus(iii) superbase and a bulky organoaluminum Lewis acid promoted the living/controlled polymerization of naturally renewable butyrolactone-based vinylidenes.
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Affiliation(s)
- Yun Bai
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, Jilin, 130012, China
| | - Huaiyu Wang
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, Jilin, 130012, China
| | - Jianghua He
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, Jilin, 130012, China
| | - Yuetao Zhang
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, Jilin, 130012, China
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29
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Ge F, Li S, Wang Z, Zhang W, Wang X. Controlled and efficient polymerization of methyl methacrylate catalyzed by pyridinylidenaminophosphine based Lewis pairs. Polym Chem 2021. [DOI: 10.1039/d1py00579k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Developing different synthetic approaches to realize controlled or living polymerization is of great interest to polymer chemists to obtain polymers with defined molecular weight, narrow molecular weight distribution and unambiguous structures.
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Affiliation(s)
- Fang Ge
- College of Chemistry and Chemical Engineering
- 266071
- Qingdao University
- Qingdao
- China
| | - Sun Li
- Chinese–German Faculty for Engineering
- 266426
- Qingdao University of Science and Technology
- Qingdao
- China
| | - Zhe Wang
- Chinese–German Faculty for Engineering
- 266426
- Qingdao University of Science and Technology
- Qingdao
- China
| | | | - Xiaowu Wang
- Chinese–German Faculty for Engineering
- 266426
- Qingdao University of Science and Technology
- Qingdao
- China
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30
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Zhou Y, Jiang S, Xu X. Isospecific Polymerization of Methyl Methacrylate by Intramolecular
Rare‐Earth
Metal Based Lewis Pairs†. CHINESE J CHEM 2020. [DOI: 10.1002/cjoc.202000441] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Yiqun Zhou
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science Soochow University Suzhou Jiangsu 215123 China
| | - Shengjie Jiang
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science Soochow University Suzhou Jiangsu 215123 China
| | - Xin Xu
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science Soochow University Suzhou Jiangsu 215123 China
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31
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Affiliation(s)
- Nan Li
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University Beijing 100871 China
- Henan Key Laboratory of Function‐Oriented Porous Materials, College of Chemistry and Chemical Engineering, Luoyang Normal University, Luoyang Henan 471934 China
| | - Wen‐Xiong Zhang
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University Beijing 100871 China
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32
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Messire G, Massicot F, Pascual L, Riguet E, Vasse JL, Behr JB. Broadening the reaction scope of unprotected aldoses via their corresponding nitrones: 1,3-dipolar cycloadditions with alkenes. Org Biomol Chem 2020; 18:5708-5725. [PMID: 32666987 DOI: 10.1039/d0ob01350a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Condensation reactions of unprotected tetroses and pentoses with hydroxylamines afforded nitrones, which were easily converted to densely functionalized isoxazolidines in the presence of electron-poor alkenes. The 1,3-dipolar cycloaddition occurred with good facial discrimination of the chiral nitrone but under rather low endo/exo control. Stereochemistry of isomers was ascertained by chemical correlation with known derivatives from the literature. Microwave activation appeared as the most efficient reaction mode, affording the expected adducts within several minutes whereas hours were needed under standard heating. Alternatively, the transformation proved also possible under high pressure conditions by using a hand pump system, avoiding any energy source. Although water could not be used as the solvent, leading to hydrolysis of the nitrone substrate, a large variety of organic solvents proved efficient. The method has potential use in the preparation of non-ionic carbohydrate-based amphiphiles.
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Affiliation(s)
- Gatien Messire
- Univ. Reims Champagne-Ardenne, ICMR, CNRS UMR 7312, FR Condorcet CNRS 3417, 51687 Reims Cedex 2, France.
| | - Fabien Massicot
- Univ. Reims Champagne-Ardenne, ICMR, CNRS UMR 7312, FR Condorcet CNRS 3417, 51687 Reims Cedex 2, France.
| | - Laura Pascual
- Univ. Reims Champagne-Ardenne, ICMR, CNRS UMR 7312, FR Condorcet CNRS 3417, 51687 Reims Cedex 2, France.
| | - Emmanuel Riguet
- Univ. Reims Champagne-Ardenne, ICMR, CNRS UMR 7312, FR Condorcet CNRS 3417, 51687 Reims Cedex 2, France.
| | - Jean-Luc Vasse
- Univ. Reims Champagne-Ardenne, ICMR, CNRS UMR 7312, FR Condorcet CNRS 3417, 51687 Reims Cedex 2, France.
| | - Jean-Bernard Behr
- Univ. Reims Champagne-Ardenne, ICMR, CNRS UMR 7312, FR Condorcet CNRS 3417, 51687 Reims Cedex 2, France.
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33
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Affiliation(s)
- Michael L. McGraw
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523-1872, United States
| | - Eugene Y.-X. Chen
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523-1872, United States
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34
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Thatikonda T, Deepake SK, Kumar P, Das U. α-Angelica lactone catalyzed oxidation of benzylic sp 3 C-H bonds of isochromans and phthalans. Org Biomol Chem 2020; 18:4046-4050. [PMID: 32427256 DOI: 10.1039/d0ob00729c] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A metal-free organocatalytic system has been developed for highly efficient benzylic C-H oxygenations of cyclic ethers using oxygen as an oxidant. This oxidation reaction utilizes α-angelica lactone as a low cost/low molecular weight catalyst. The optimized reaction conditions allow the synthesis of valued isocoumarins and phthalides from readily available precursors in good yields. Mechanistic studies indicate that the reaction pathway likely involves a radical process via a peroxide intermediate.
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Affiliation(s)
- Thanusha Thatikonda
- Division of Organic Chemistry, CSIR - National Chemical Laboratory, Pune 411008, India.
| | - Siddharth K Deepake
- Division of Organic Chemistry, CSIR - National Chemical Laboratory, Pune 411008, India. and Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Pawan Kumar
- Division of Organic Chemistry, CSIR - National Chemical Laboratory, Pune 411008, India. and Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Utpal Das
- Division of Organic Chemistry, CSIR - National Chemical Laboratory, Pune 411008, India. and Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
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35
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Bai Y, Wang H, He J, Zhang Y. Rapid and Scalable Access to Sequence‐Controlled DHDM Multiblock Copolymers by FLP Polymerization. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202004013] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Yun Bai
- State Key Laboratory of Supramolecular Structure and Materials College of Chemistry Jilin University Changchun Jilin 130012 China
| | - Huaiyu Wang
- State Key Laboratory of Supramolecular Structure and Materials College of Chemistry Jilin University Changchun Jilin 130012 China
| | - Jianghua He
- State Key Laboratory of Supramolecular Structure and Materials College of Chemistry Jilin University Changchun Jilin 130012 China
| | - Yuetao Zhang
- State Key Laboratory of Supramolecular Structure and Materials College of Chemistry Jilin University Changchun Jilin 130012 China
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36
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Bai Y, Wang H, He J, Zhang Y. Rapid and Scalable Access to Sequence-Controlled DHDM Multiblock Copolymers by FLP Polymerization. Angew Chem Int Ed Engl 2020; 59:11613-11619. [PMID: 32237265 DOI: 10.1002/anie.202004013] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Revised: 03/26/2020] [Indexed: 12/25/2022]
Abstract
An immortal N-(diphenylphosphanyl)-1,3-diisopropyl-4,5-dimethyl-1,3-dihydro-2H-imidazol-2-imine/diisobutyl (2,6-di-tert-butyl-4-methylphenoxy) aluminum (P(NIi Pr)Ph2 /(BHT)Ali Bu2 )-based frustrated Lewis pair (FLP) polymerization strategy is presented for rapid and scalable synthesis of the sequence-controlled multiblock copolymers at room temperature. Without addition of extra initiator or catalyst and complex synthetic procedure, this method enabled a tripentacontablock copolymer (n=53, k=4, dpn =50) to be achieved with the highest reported block number (n=53) and molecular weight (Mn =310 kg mol-1 ) within 30 min. More importantly, this FLP polymerization strategy provided access to the multiblock copolymers with tailored properties by precisely adjusting the monomer sequence and block numbers.
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Affiliation(s)
- Yun Bai
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, Jilin, 130012, China
| | - Huaiyu Wang
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, Jilin, 130012, China
| | - Jianghua He
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, Jilin, 130012, China
| | - Yuetao Zhang
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, Jilin, 130012, China
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37
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Wang X, Hong M. Precise Control of Molecular Weight and Stereospecificity in Lewis Pair Polymerization of Semifluorinated Methacrylates: Mechanistic Studies and Stereocomplex Formation. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c00553] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Xing Wang
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai 200032, China
| | - Miao Hong
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai 200032, China
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38
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Wang Z, Zhang X, Liang H, Xian M, Wang X. Binuclear aluminum Lewis acid and its behavior in the polymerization of methyl methacrylate and n-butyl acrylate. Polym Chem 2020. [DOI: 10.1039/d0py00572j] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Bimetallic organoaluminum vs. monomeric organoaluminum in Lewis pair catalysed MMA and nBA polymerization.
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Affiliation(s)
- Zhe Wang
- Key Laboratory of Biobased Materials
- Qingdao Institute of Biomass Energy and Bioprocess Technology
- Chinese Academy of Sciences
- Qingdao
- China
| | - Xianhui Zhang
- Key Laboratory of Biobased Materials
- Qingdao Institute of Biomass Energy and Bioprocess Technology
- Chinese Academy of Sciences
- Qingdao
- China
| | - Hongwen Liang
- China Petroleum and Chemical Corporation
- Baling Branch
- Yueyang
- China
| | - Mo Xian
- Key Laboratory of Biobased Materials
- Qingdao Institute of Biomass Energy and Bioprocess Technology
- Chinese Academy of Sciences
- Qingdao
- China
| | - Xiaowu Wang
- Key Laboratory of Biobased Materials
- Qingdao Institute of Biomass Energy and Bioprocess Technology
- Chinese Academy of Sciences
- Qingdao
- China
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39
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Lv C, Xu G, Yang R, Zhou L, Wang Q. Chiral phosphoric acid catalyzed asymmetric kinetic resolution polymerization of 6-aryl-ε-caprolactones. Polym Chem 2020. [DOI: 10.1039/d0py00514b] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The first chiral phosphoric acid catalyzed asymmetric kinetic resolution polymerization (AKRP) of 6-aryl-ε-caprolactones has been achieved.
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Affiliation(s)
- Chengdong Lv
- Key Laboratory of Biobased Materials
- Qingdao Institute of Bioenergy and Bioprocess Technology
- Chinese Academy of Sciences
- Qingdao
- China
| | - Guangqiang Xu
- Key Laboratory of Biobased Materials
- Qingdao Institute of Bioenergy and Bioprocess Technology
- Chinese Academy of Sciences
- Qingdao
- China
| | - Rulin Yang
- Key Laboratory of Biobased Materials
- Qingdao Institute of Bioenergy and Bioprocess Technology
- Chinese Academy of Sciences
- Qingdao
- China
| | - Li Zhou
- Key Laboratory of Biobased Materials
- Qingdao Institute of Bioenergy and Bioprocess Technology
- Chinese Academy of Sciences
- Qingdao
- China
| | - Qinggang Wang
- Key Laboratory of Biobased Materials
- Qingdao Institute of Bioenergy and Bioprocess Technology
- Chinese Academy of Sciences
- Qingdao
- China
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