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Ohtani K, Shimizu K, Takahashi T, Takamura M. Novel Chain-End Modification of Polymer Iodides via Reversible Complexation-Mediated Polymerization with Functionalized Radical Generation Agents. Polymers (Basel) 2023; 15:2667. [PMID: 37376313 DOI: 10.3390/polym15122667] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Revised: 06/07/2023] [Accepted: 06/09/2023] [Indexed: 06/29/2023] Open
Abstract
The modification of polymer chain ends is important in order to produce highly functional polymers. A novel chain-end modification of polymer iodides (Polymer-I) via reversible complexation-mediated polymerization (RCMP) with different functionalized radical generation agents, such as azo compounds and organic peroxides, was developed. This reaction was comprehensively studied for three different polymers, i.e., poly (methyl methacrylate), polystyrene and poly (n-butyl acrylate) (PBA), two different functional azo compounds with aliphatic alkyl and carboxy groups, three different functional diacyl peroxides with aliphatic alkyl, aromatic, and carboxy groups, and one peroxydicarbonate with an aliphatic alkyl group. The reaction mechanism was probed using matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS). The combination of PBA-I, iodine abstraction catalyst and different functional diacyl peroxides enabled higher chain-end modification to desired moieties from the diacyl peroxide. The dominant key factors for efficiency in this chain-end modification mechanism were the combination rate constant and the amount of radicals generated per unit of time.
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Affiliation(s)
- Kazuya Ohtani
- Department of Organic Materials Science, Graduated School of Organic Materials Science, Yamagata University, 4-3-16 Jonan, Yonezawa 992-8510, Japan
| | - Kanta Shimizu
- Department of Organic Materials Science, Graduated School of Organic Materials Science, Yamagata University, 4-3-16 Jonan, Yonezawa 992-8510, Japan
| | - Tatsuhiro Takahashi
- Department of Organic Materials Science, Graduated School of Organic Materials Science, Yamagata University, 4-3-16 Jonan, Yonezawa 992-8510, Japan
| | - Masumi Takamura
- Yamagata University Inkjet Development Center, 1- 808-48 Arcadia, Yonezawa 992-0119, Japan
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Li X, Ogihara T, Kato T, Nakamura Y, Yamago S. Evidence for Polarity- and Viscosity-Controlled Pathways in the Termination Reaction in the Radical Polymerization of Acrylonitrile. Macromolecules 2021. [DOI: 10.1021/acs.macromol.1c00158] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Xiaopei Li
- Institute for Chemical Research, Kyoto University, Uji 611-0011, Japan
| | - Tasuku Ogihara
- Institute for Chemical Research, Kyoto University, Uji 611-0011, Japan
| | - Tatsuhisa Kato
- Institute for Chemical Research, Kyoto University, Uji 611-0011, Japan
| | - Yasuyuki Nakamura
- Research and Services Division of Materials Data and Integrated System, National Institute for Materials Science, Tsukuba, Ibaraki 305-0047, Japan
| | - Shigeru Yamago
- Institute for Chemical Research, Kyoto University, Uji 611-0011, Japan
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Ji P, Zhang Y, Gao F, Bi F, Wang W. Direct, stereoselective thioglycosylation enabled by an organophotoredox radical strategy. Chem Sci 2020; 11:13079-13084. [PMID: 34094490 PMCID: PMC8163235 DOI: 10.1039/d0sc04136j] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Accepted: 10/19/2020] [Indexed: 12/13/2022] Open
Abstract
While strategies involving a 2e- transfer pathway have dictated glycosylation development, the direct glycosylation of readily accessible glycosyl donors as radical precursors is particularly appealing because of high radical anomeric selectivity and atom- and step-economy. However, the development of the radical process has been challenging owing to notorious competing reduction, elimination and/or SN side reactions of commonly used, labile glycosyl donors. Here we introduce an organophotocatalytic strategy through which glycosyl bromides can be efficiently converted into corresponding anomeric radicals by photoredox mediated HAT catalysis without a transition metal or a directing group and achieve highly anomeric selectivity. The power of this platform has been demonstrated by the mild reaction conditions enabling the synthesis of challenging α-1,2-cis-thioglycosides, the tolerance of various functional groups and the broad substrate scope for both common pentoses and hexoses. Furthermore, this general approach is compatible with both sp2 and sp3 sulfur electrophiles and late-stage glycodiversification for a total of 50 substrates probed.
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Affiliation(s)
- Peng Ji
- Departments of Pharmacology and Toxicology and Chemistry and Biochemistry, BIO5 Institute, and University of Arizona Cancer Centre, University of Arizona Tucson AZ 85721 USA
| | - Yueteng Zhang
- Departments of Pharmacology and Toxicology and Chemistry and Biochemistry, BIO5 Institute, and University of Arizona Cancer Centre, University of Arizona Tucson AZ 85721 USA
| | - Feng Gao
- Departments of Pharmacology and Toxicology and Chemistry and Biochemistry, BIO5 Institute, and University of Arizona Cancer Centre, University of Arizona Tucson AZ 85721 USA
| | - Fangchao Bi
- Departments of Pharmacology and Toxicology and Chemistry and Biochemistry, BIO5 Institute, and University of Arizona Cancer Centre, University of Arizona Tucson AZ 85721 USA
| | - Wei Wang
- Departments of Pharmacology and Toxicology and Chemistry and Biochemistry, BIO5 Institute, and University of Arizona Cancer Centre, University of Arizona Tucson AZ 85721 USA
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Lu Y, Yamago S. Synthesis of Structurally Controlled, Highly Branched Polymethacrylates by Radical Polymerization through the Design of a Monomer Having Hierarchical Reactivity. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c00393] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yangtian Lu
- Institute for Chemical Research, Kyoto University, Gokasho, Uji, Kyoto 611-0011, Japan
| | - Shigeru Yamago
- Institute for Chemical Research, Kyoto University, Gokasho, Uji, Kyoto 611-0011, Japan
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Imamura Y, Fujita T, Kobayashi Y, Yamago S. Tacticity, molecular weight, and temporal control by lanthanide triflate-catalyzed stereoselective radical polymerization of acrylamides with an organotellurium chain transfer agent. Polym Chem 2020. [DOI: 10.1039/d0py01280g] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Ternary control over molecular weight, tacticity, and time was achieved in the polymerization of acrylamides by photo-induced organotellurium-mediated radical polymerization (TERP) in the presence of Y(OTf)3 or Yb(OTf)3 as an acid catalyst.
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Affiliation(s)
- Yuji Imamura
- Institute for Chemical Research
- Kyoto University
- Uji 611-0011
- Japan
| | - Takehiro Fujita
- Institute for Chemical Research
- Kyoto University
- Uji 611-0011
- Japan
| | - Yu Kobayashi
- Graduate School of Science
- Osaka City University
- Osaka 558-8585
- Japan
| | - Shigeru Yamago
- Institute for Chemical Research
- Kyoto University
- Uji 611-0011
- Japan
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6
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Lin Q, Diao T. Mechanism of Ni-Catalyzed Reductive 1,2-Dicarbofunctionalization of Alkenes. J Am Chem Soc 2019; 141:17937-17948. [DOI: 10.1021/jacs.9b10026] [Citation(s) in RCA: 125] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Qiao Lin
- Department of Chemistry, New York University, 100 Washington Square East, New York, New York 10003, United States
| | - Tianning Diao
- Department of Chemistry, New York University, 100 Washington Square East, New York, New York 10003, United States
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7
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Lu Y, Yamago S. One‐Step Synthesis of Dendritic Highly Branched Polystyrenes by Organotellurium‐Mediated Copolymerization of Styrene and a Dienyl Telluride Monomer. Angew Chem Int Ed Engl 2019; 58:3952-3956. [DOI: 10.1002/anie.201814566] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2018] [Indexed: 11/08/2022]
Affiliation(s)
- Yangtian Lu
- Institute for Chemical ResearchKyoto University Uji 611-0011 Japan
| | - Shigeru Yamago
- Institute for Chemical ResearchKyoto University Uji 611-0011 Japan
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Lu Y, Yamago S. One‐Step Synthesis of Dendritic Highly Branched Polystyrenes by Organotellurium‐Mediated Copolymerization of Styrene and a Dienyl Telluride Monomer. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201814566] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Yangtian Lu
- Institute for Chemical ResearchKyoto University Uji 611-0011 Japan
| | - Shigeru Yamago
- Institute for Chemical ResearchKyoto University Uji 611-0011 Japan
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Kuang Y, Wang X, Anthony D, Diao T. Ni-catalyzed two-component reductive dicarbofunctionalization of alkenes via radical cyclization. Chem Commun (Camb) 2018; 54:2558-2561. [DOI: 10.1039/c8cc00358k] [Citation(s) in RCA: 66] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
A reductive dicarbofunctionalization of alkenes has been developed and applied to the preparation of substituted carbo- and heterocycles.
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Mishima E, Tamura T, Yamago S. Controlled Copolymerization of 1-Octene and (Meth)acrylates via Organotellurium-Mediated Living Radical Polymerization (TERP). Macromolecules 2012. [DOI: 10.1021/ma301570r] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Eri Mishima
- Institute
for Chemical Research, Kyoto University, and ‡CREST, Japan
Science and Technology Agency, Uji 611-0011, Japan
| | - Tomoki Tamura
- Institute
for Chemical Research, Kyoto University, and ‡CREST, Japan
Science and Technology Agency, Uji 611-0011, Japan
| | - Shigeru Yamago
- Institute
for Chemical Research, Kyoto University, and ‡CREST, Japan
Science and Technology Agency, Uji 611-0011, Japan
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Mishima E, Tamura T, Yamago S. Controlled Copolymerization of Acrylate and 6-Methyleneundecane by Organotellurium-Mediated Living Radical Polymerization (TERP). Macromolecules 2012. [DOI: 10.1021/ma300325r] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Eri Mishima
- Institute for Chemical
Research, Kyoto University, Uji 611-0011,
Japan
| | - Tomoki Tamura
- Institute for Chemical
Research, Kyoto University, Uji 611-0011,
Japan
| | - Shigeru Yamago
- Institute for Chemical
Research, Kyoto University, Uji 611-0011,
Japan
- CREST, Japan Science and Technology Agency, Tokyo 102-0076, Japan
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13
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Mishima E, Yamago S. Controlled random and alternating copolymerization of (meth)acrylates, acrylonitrile, and (meth)acrylamides with vinyl ethers by organotellurium-, organostibine-, and organobismuthine-mediated living radical polymerization reactions. ACTA ACUST UNITED AC 2012. [DOI: 10.1002/pola.26004] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Nakamura Y, Kitada Y, Kobayashi Y, Ray B, Yamago S. Quantitative Analysis of the Effect of Azo Initiators on the Structure of α-Polymer Chain Ends in Degenerative Chain-Transfer-Mediated Living Radical Polymerization Reactions. Macromolecules 2011. [DOI: 10.1021/ma201761q] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yasuyuki Nakamura
- Institute for Chemical Research, Kyoto University, Uji 611-0011, Japan
| | - Yukie Kitada
- Institute for Chemical Research, Kyoto University, Uji 611-0011, Japan
| | | | | | - Shigeru Yamago
- Institute for Chemical Research, Kyoto University, Uji 611-0011, Japan
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Mishima E, Yamago S. Controlled Alternating Copolymerization of (Meth)acrylates and Vinyl Ethers by Using Organoheteroatom-Mediated Living Radical Polymerization. Macromol Rapid Commun 2011; 32:893-8. [DOI: 10.1002/marc.201100089] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2011] [Indexed: 11/05/2022]
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Yamago S. Precision Polymer Synthesis by Degenerative Transfer Controlled/Living Radical Polymerization Using Organotellurium, Organostibine, and Organobismuthine Chain-Transfer Agents. Chem Rev 2009; 109:5051-68. [DOI: 10.1021/cr9001269] [Citation(s) in RCA: 369] [Impact Index Per Article: 24.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Shigeru Yamago
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
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Mitamura T, Iwata K, Ogawa A. (PhTe)2-Mediated Intramolecular Radical Cyclization of o-Ethynylaryl Isocyanides Leading to Bistellurated Quinolines upon Visible-Light Irradiation. Org Lett 2009; 11:3422-4. [DOI: 10.1021/ol901267h] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Takenori Mitamura
- Department of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University, Gakuen-cho 1-1, Nakaku, Sakai, Osaka 599-8531, Japan
| | - Kimiyo Iwata
- Department of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University, Gakuen-cho 1-1, Nakaku, Sakai, Osaka 599-8531, Japan
| | - Akiya Ogawa
- Department of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University, Gakuen-cho 1-1, Nakaku, Sakai, Osaka 599-8531, Japan
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18
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Yamago S, Kayahara E, Yamada H. Synthesis of structurally well-controlled ω-vinylidene functionalized poly(alkyl methacrylate)s and polymethacrylonitrile by organotellurium, organostibine, and organobismuthine-mediated living radical polymerizations. REACT FUNCT POLYM 2009. [DOI: 10.1016/j.reactfunctpolym.2009.03.008] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Yamago S, Ukai Y, Matsumoto A, Nakamura Y. Organotellurium-Mediated Controlled/Living Radical Polymerization Initiated by Direct C−Te Bond Photolysis. J Am Chem Soc 2009; 131:2100-1. [DOI: 10.1021/ja8099689] [Citation(s) in RCA: 158] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Shigeru Yamago
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan, Division of Molecular Materials Chemistry, Graduate School of Science, Osaka City University, Osaka 558-8585, Japan
| | - Yuu Ukai
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan, Division of Molecular Materials Chemistry, Graduate School of Science, Osaka City University, Osaka 558-8585, Japan
| | - Atsushi Matsumoto
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan, Division of Molecular Materials Chemistry, Graduate School of Science, Osaka City University, Osaka 558-8585, Japan
| | - Yasuyuki Nakamura
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan, Division of Molecular Materials Chemistry, Graduate School of Science, Osaka City University, Osaka 558-8585, Japan
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Kayahara E, Yamago S. Development of an Arylthiobismuthine Cocatalyst in Organobismuthine-Mediated Living Radical Polymerization: Applications for Synthesis of Ultrahigh Molecular Weight Polystyrenes and Polyacrylates. J Am Chem Soc 2009; 131:2508-13. [DOI: 10.1021/ja8092899] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Eiichi Kayahara
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Shigeru Yamago
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
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