1
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Sui X, Gutekunst WR. Cascade Alternating Metathesis Cyclopolymerization of Diynes and Dihydrofuran. ACS Macro Lett 2022; 11:630-635. [PMID: 35570817 DOI: 10.1021/acsmacrolett.2c00140] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Ruthenium alkoxymethylidene complexes have recently come into view as competent species for metathesis copolymerization reactions when coupled with appropriate comonomer targets. Here, we explore the ability of Fischer-type carbenes to participate in cascade alternating metathesis cyclopolymerization (CAMC) through facile terminal alkyne addition. The combination of diyne monomers and an equal feed ratio of low-strain dihydrofuran leads to a controlled chain-growth copolymerization with high degrees of alternation (>97% alternating diads) and produces degradable polymer materials with low dispersities and targetable molecular weights. When combined with enyne monomers, this method is amenable to the synthesis of alternating diblock copolymers that can be fully degraded to short oligomer fragments under aqueous acidic conditions. This work furthers the potential for the generation of functional metathesis materials via Fischer-type ruthenium alkylidenes.
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Affiliation(s)
- Xuelin Sui
- School of Chemistry and Biochemistry, Georgia Institute of Technology, 901 Atlantic Drive NW, Atlanta, Georgia 30332, United States
| | - Will R. Gutekunst
- School of Chemistry and Biochemistry, Georgia Institute of Technology, 901 Atlantic Drive NW, Atlanta, Georgia 30332, United States
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2
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Byun S, Park S, Choi Y, Ryu JY, Lee J, Choi JH, Hong S. Highly Efficient Ethenolysis and Propenolysis of Methyl Oleate Catalyzed by Abnormal N-Heterocyclic Carbene Ruthenium Complexes in Combination with a Phosphine–Copper Cocatalyst. ACS Catal 2020. [DOI: 10.1021/acscatal.0c02018] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Seunghwan Byun
- Department of Chemistry, Gwangju Institute of Science and Technology, 123 Cheomdan-gwagiro, Buk-gu, Gwangju 61005, Republic of Korea
- Grubbs Center for Polymers and Catalysis, Gwangju Institute of Science and Technology, 123 Cheomdan-gwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea
| | - Seungwook Park
- Department of Chemistry, Gwangju Institute of Science and Technology, 123 Cheomdan-gwagiro, Buk-gu, Gwangju 61005, Republic of Korea
- Grubbs Center for Polymers and Catalysis, Gwangju Institute of Science and Technology, 123 Cheomdan-gwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea
| | - Youngseo Choi
- 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
| | - Junseong Lee
- Department of Chemistry, Chonnam National University, 77 Yongbong-ro,
Buk-gu, Gwangju 61186, Republic of Korea
| | - Jun-Ho Choi
- Department of Chemistry, Gwangju Institute of Science and Technology, 123 Cheomdan-gwagiro, Buk-gu, Gwangju 61005, Republic of Korea
| | - Sukwon Hong
- Department of Chemistry, Gwangju Institute of Science and Technology, 123 Cheomdan-gwagiro, Buk-gu, Gwangju 61005, Republic of Korea
- Grubbs Center for Polymers and Catalysis, Gwangju Institute of Science and Technology, 123 Cheomdan-gwagi-ro, 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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3
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Multifunctional conjugated 1,6-heptadiynes and its derivatives stimulated molecular electronics: Future moletronics. Eur Polym J 2020. [DOI: 10.1016/j.eurpolymj.2019.109467] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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4
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Jung K, Ahmed TS, Lee J, Sung JC, Keum H, Grubbs RH, Choi TL. Living β-selective cyclopolymerization using Ru dithiolate catalysts. Chem Sci 2019; 10:8955-8963. [PMID: 31762976 PMCID: PMC6855257 DOI: 10.1039/c9sc01326a] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2019] [Accepted: 07/22/2019] [Indexed: 11/21/2022] Open
Abstract
Cyclopolymerization (CP) of 1,6-heptadiyne derivatives is a powerful method for synthesizing conjugated polyenes containing five- or six-membered rings via α- or β-addition, respectively. Fifteen years of studies on CP have revealed that user-friendly Ru-based catalysts promoted only α-addition; however, we recently achieved β-selective regiocontrol to produce polyenes containing six-membered-rings, using a dithiolate-chelated Ru-based catalyst. Unfortunately, slow initiation and relatively low catalyst stability inevitably led to uncontrolled polymerization. Nevertheless, this investigation gave us some clues to how successful living polymerization could be achieved. Herein, we report living β-selective CP by rational engineering of the steric factor on monomer or catalyst structures. As a result, the molecular weight of the conjugated polymers from various monomers could be controlled with narrow dispersities, according to the catalyst loading. A mechanistic investigation by in situ kinetic studies using 1H NMR spectroscopy revealed that with appropriate pyridine additives, imposing a steric demand on either the monomer or the catalyst significantly improved the stability of the propagating carbene as well as the relative rates of initiation over propagation, thereby achieving living polymerization. Furthermore, we successfully prepared diblock and even triblock copolymers with a broad monomer scope.
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Affiliation(s)
- Kijung Jung
- Department of Chemistry , Seoul National University , Seoul 08826 , Republic of Korea .
| | - Tonia S Ahmed
- The Arnold and Mabel Beckman Laboratory of Chemical Synthesis , Division of Chemistry and Chemical Engineering , California Institute of Technology , Pasadena , California 91125 , USA
| | - Jaeho Lee
- Department of Chemistry , Seoul National University , Seoul 08826 , Republic of Korea .
| | - Jong-Chan Sung
- Department of Chemistry , Seoul National University , Seoul 08826 , Republic of Korea .
| | - Hyeyun Keum
- Department of Chemistry , Seoul National University , Seoul 08826 , Republic of Korea .
| | - Robert H Grubbs
- The Arnold and Mabel Beckman Laboratory of Chemical Synthesis , Division of Chemistry and Chemical Engineering , California Institute of Technology , Pasadena , California 91125 , USA
| | - Tae-Lim Choi
- Department of Chemistry , Seoul National University , Seoul 08826 , Republic of Korea .
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5
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Probst P, Elser I, Schowner R, Benedikter MJ, Buchmeiser MR. Regio‐ and Stereospecific Cyclopolymerization of α,ω‐Diynes by Cationic Molybdenum Imido Alkylidene
N
‐Heterocyclic Carbene Complexes. Macromol Rapid Commun 2019; 41:e1900398. [DOI: 10.1002/marc.201900398] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2019] [Revised: 09/04/2019] [Indexed: 01/07/2023]
Affiliation(s)
- Patrick Probst
- Chair of Macromolecular Compounds and Fiber ChemistryInstitute of Polymer ChemistryUniversity of Stuttgart Pfaffenwaldring 55 70569 Stuttgart Germany
| | - Iris Elser
- Chair of Macromolecular Compounds and Fiber ChemistryInstitute of Polymer ChemistryUniversity of Stuttgart Pfaffenwaldring 55 70569 Stuttgart Germany
| | - Roman Schowner
- Chair of Macromolecular Compounds and Fiber ChemistryInstitute of Polymer ChemistryUniversity of Stuttgart Pfaffenwaldring 55 70569 Stuttgart Germany
| | - Mathis J. Benedikter
- Chair of Macromolecular Compounds and Fiber ChemistryInstitute of Polymer ChemistryUniversity of Stuttgart Pfaffenwaldring 55 70569 Stuttgart Germany
| | - Michael R. Buchmeiser
- Chair of Macromolecular Compounds and Fiber ChemistryInstitute of Polymer ChemistryUniversity of Stuttgart Pfaffenwaldring 55 70569 Stuttgart Germany
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6
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Peterson GI, Yang S, Choi TL. Synthesis of Functional Polyacetylenes via Cyclopolymerization of Diyne Monomers with Grubbs-type Catalysts. Acc Chem Res 2019; 52:994-1005. [PMID: 30689346 DOI: 10.1021/acs.accounts.8b00594] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Metathesis cyclopolymerization (CP) of α,ω-diynes is a powerful method to prepare functional polyacetylenes (PAs). PAs have long been studied due to their interesting electrical, optical, photonic, and magnetic properties which make them candidates for use in various advanced applications. Grubbs catalysts are widely used throughout synthetic chemistry, largely due to their accessibility, high reactivity, and tolerance to air, moisture, and many functional groups. Prior to our entrance into this field, only a few examples of CP using modified Grubbs catalysts existed. Inspired by these works, we saw an opportunity to expand the accessibility and utility of Grubbs-catalyzed CPs. We began by exploring CP with popular and commercially available Grubbs catalysts. We found Grubbs third-generation catalyst (G3) to be an excellent catalyst when we used strategies to stabilize the propagating Ru carbene, such as decreasing the polymerization temperature or using weakly coordinating solvent or ligands. Controlled living polymerizations were demonstrated using various 1,6-heptadiyne monomers and yielded polymers with exclusively 5-membered rings (via α-addition) in the polymer backbone. The strategy of stabilizing the Ru carbene was also critical to successful CP with Hoveyda-Grubbs second-generation (HG2) and Grubbs first-generation (G1) catalysts. We found that decomposed Ru species were catalyzing side reactions which could be completely shut down by decreasing the reaction temperature or using weakly coordinating ligands. While HG2 generally led to uncontrolled polymerizations, we found it to be an effective catalyst for monomers with very large side chains. G1 displayed broader functional group tolerance and thus broader monomer scope than G3. We next looked at our ability to change the regioselectivity of the polymerization by using Z-selective catalysts which favor β-addition and the formation of 6-membered rings in the polymer backbone. While modest β-selectivity could be obtained using Grubbs Z-selective catalyst at low temperatures, we found that by using one of Hoveyda and co-workers' catalysts with decreased carbene electrophilicity, we could achieve exclusive formation of 6-membered rings. We also pursued alternative routes to achieve 6+-membered rings in the polymer backbone by using diyne monomers with increased distance between alkynes. We found that optimizing the monomer structure for CP was an effective strategy to achieve controlled polymerizations. By using bulky substituents (maximizing the Thorpe-Ingold effect) and/or using heteroatoms (shorter bonds) to bring the alkynes closer together, controlled living CP could be achieved with various 1,7-octadiyne and 1,8-nonadiyne monomers. Finally, we took advantage of several inherent properties of controlled CP techniques to prepare polymers with advanced architectures and nanostructures. For instance, the living nature of the polymerization enabled production of block copolymers, the tolerance of very large substituents enabled production of dendronized and brush polymers, and the insolubility or crystallinity of some monomers was utilized for the spontaneous self-assembly of polymers into various one- and two-dimensional nanostructures. Overall, the strategies of stabilizing the propagating Ru carbene, modulating the selectivity and reactivity of the Ru carbene, and enhancing the inherent reactivity of monomers were key to improving the utility and performance of CP with Grubbs-type catalysts. The insight provided by these studies will be important for future developments of CP and other metathesis polymerizations utilizing ring-closing steps.
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Affiliation(s)
- Gregory I. Peterson
- Department of Chemistry, Seoul National University, Seoul 08826, Republic of Korea
| | - Sanghee Yang
- Department of Chemistry, Seoul National University, Seoul 08826, Republic of Korea
| | - Tae-Lim Choi
- Department of Chemistry, Seoul National University, Seoul 08826, Republic of Korea
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7
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Catalytic living ring-opening metathesis polymerization with Grubbs’ second- and third-generation catalysts. Nat Chem 2019; 11:488-494. [DOI: 10.1038/s41557-019-0239-4] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2018] [Accepted: 02/27/2019] [Indexed: 12/16/2022]
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8
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Herndon JW. The chemistry of the carbon-transition metal double and triple bond: Annual survey covering the year 2017. Coord Chem Rev 2018. [DOI: 10.1016/j.ccr.2018.08.007] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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9
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Kang C, Kwon S, Sung JC, Kim J, Baik MH, Choi TL. Living Metathesis and Metallotropy Polymerization Gives Conjugated Polyenynes from Multialkynes: How to Design Sequence-Specific Cascades for Polymers. J Am Chem Soc 2018; 140:16320-16329. [PMID: 30427194 DOI: 10.1021/jacs.8b10269] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
On the basis of a combined experimental and computational study, a novel method for preparing fully conjugated polyenynes via cascade metathesis and metallotropy (M&M) polymerization of various multialkynes is developed. DFT calculations elucidate the detailed mechanism of the metallotropic 1,3-shift, which is a key process of M&M polymerization. An α,β-(C,C,C)-agostic interaction stabilizing the metallacyclobutadiene transition state is found to be critically important for the successful polymerization with excellent specificity. The polymerization efficiency displayed by the tetrayne monomer is controlled by the steric demands of its substituents, and more complex hexayne monomers can be successfully polymerized to give access to highly conjugated polyenynes via a series of intramolecular metathesis and metallotropic shift cascade reactions. Furthermore, living polymerization led to the synthesis of block copolymers consisting of fully conjugated polyenyne backbones. The implementation of pentayne monomers provides polyenynes with successive C-C triple bonds via consecutive metallotropic 1,3-shift. In short, the design of multialkynes enables the preparation of diverse conjugated polyenyne motifs via selective M&M cascade reactions.
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Affiliation(s)
- Cheol Kang
- Department of Chemistry , Seoul National University , Seoul 08826 , Republic of Korea
| | - Seongyeon Kwon
- Department of Chemistry , Korea Advanced Institute of Science and Technology (KAIST) , Daejeon 34141 , Republic of Korea.,Center for Catalytic Hydrocarbon Functionalizations , Institute for Basic Science (IBS) , Daejeon 34141 , Republic of Korea
| | - Jong-Chan Sung
- Department of Chemistry , Seoul National University , Seoul 08826 , Republic of Korea
| | - Jinwoo Kim
- Department of Chemistry , Korea Advanced Institute of Science and Technology (KAIST) , Daejeon 34141 , Republic of Korea.,Center for Catalytic Hydrocarbon Functionalizations , Institute for Basic Science (IBS) , Daejeon 34141 , Republic of Korea
| | - Mu-Hyun Baik
- Department of Chemistry , Korea Advanced Institute of Science and Technology (KAIST) , Daejeon 34141 , Republic of Korea.,Center for Catalytic Hydrocarbon Functionalizations , Institute for Basic Science (IBS) , Daejeon 34141 , Republic of Korea
| | - Tae-Lim Choi
- Department of Chemistry , Seoul National University , Seoul 08826 , Republic of Korea
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10
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Comparative Studies on Properties of Polymers with Bulky Side Groups Synthesized by Cyclopolymerization of α,ω-Dienes and α,ω-Diynes. CHINESE JOURNAL OF POLYMER SCIENCE 2018. [DOI: 10.1007/s10118-019-2183-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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11
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Fu L, Zhang T, Fu G, Gutekunst WR. Relay Conjugation of Living Metathesis Polymers. J Am Chem Soc 2018; 140:12181-12188. [DOI: 10.1021/jacs.8b07315] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Liangbing Fu
- School of Chemistry and Biochemistry, Georgia Institute of Technology, 901 Atlantic Drive NW, Atlanta, Georgia 30332, United States
| | - Tianqi Zhang
- School of Chemistry and Biochemistry, Georgia Institute of Technology, 901 Atlantic Drive NW, Atlanta, Georgia 30332, United States
| | - Guanyao Fu
- School of Chemistry and Biochemistry, Georgia Institute of Technology, 901 Atlantic Drive NW, Atlanta, Georgia 30332, United States
| | - Will R. Gutekunst
- School of Chemistry and Biochemistry, Georgia Institute of Technology, 901 Atlantic Drive NW, Atlanta, Georgia 30332, United States
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12
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Pasini D, Takeuchi D. Cyclopolymerizations: Synthetic Tools for the Precision Synthesis of Macromolecular Architectures. Chem Rev 2018; 118:8983-9057. [PMID: 30146875 DOI: 10.1021/acs.chemrev.8b00286] [Citation(s) in RCA: 74] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Monomers possessing two functionalities suitable for polymerization are often designed and utilized in syntheses directed to the formation of cross-linked macromolecules. In this review, we give an account of recent developments related to the use of such monomers in cyclopolymerization processes, in order to form linear, soluble macromolecules. These processes can be activated by means of radical, ionic, or transition-metal mediated chain-growth polymerization mechanisms, to achieve cyclic moieties of variable ring size which are embedded within the polymer backbone, driving and tuning peculiar physical properties of the resulting macromolecules. The two functionalities are covalently linked by a "tether", which can be appropriately designed in order to "imprint" elements of chemical information into the polymer backbone during the synthesis and, in some cases, be removed by postpolymerization reactions. The two functionalities can possess identical or even very different reactivities toward the polymerization mechanism involved; in the latter case, consequences and outcomes related to the sequence-controlled, precision synthesis of macromolecules have been demonstrated. Recent advances in new initiating systems and polymerization catalysts enabled the precision syntheses of polymers with regulated cyclic structures by highly regio- and/or stereoselective cyclopolymerization. Cyclopolymerizations involving double cyclization, ring-opening, or isomerization have been also developed, generating unique repeating structures, which can hardly be obtained by conventional polymerization methods.
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Affiliation(s)
- Dario Pasini
- Department of Chemistry and INSTM Research Unit , University of Pavia , Viale Taramelli , 10-27100 Pavia , Italy
| | - Daisuke Takeuchi
- Department of Frontier Materials Chemistry, Graduate School of Science and Technology , Hirosaki University , 3 Bunkyo-cho , Hirosaki , Aomori , 036-8561 , Japan
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13
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Peterson GI, Bang KT, Choi TL. Mechanochemical Degradation of Denpols: Synthesis and Ultrasound-Induced Chain Scission of Polyphenylene-Based Dendronized Polymers. J Am Chem Soc 2018; 140:8599-8608. [DOI: 10.1021/jacs.8b05110] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Gregory I. Peterson
- Department of Chemistry, Seoul National University, Seoul 08826, Republic of Korea
| | - Ki-Taek Bang
- Department of Chemistry, Seoul National University, Seoul 08826, Republic of Korea
| | - Tae-Lim Choi
- Department of Chemistry, Seoul National University, Seoul 08826, Republic of Korea
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14
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Jung K, Kim K, Sung JC, Ahmed TS, Hong SH, Grubbs RH, Choi TL. Toward Perfect Regiocontrol for β-Selective Cyclopolymerization Using a Ru-Based Olefin Metathesis Catalyst. Macromolecules 2018. [DOI: 10.1021/acs.macromol.8b00969] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Kijung Jung
- Department of Chemistry, Seoul National University, Seoul 08826, Republic of Korea
| | - Kunsoon Kim
- Department of Chemistry, Seoul National University, Seoul 08826, Republic of Korea
| | - Jong-Chan Sung
- Department of Chemistry, Seoul National University, Seoul 08826, Republic of Korea
| | - Tonia S. Ahmed
- The Arnold and Mabel Beckman Laboratory of Chemical Synthesis, Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
| | - Soon Hyeok Hong
- Department of Chemistry, Seoul National University, Seoul 08826, Republic of Korea
| | - Robert H. Grubbs
- The Arnold and Mabel Beckman Laboratory of Chemical Synthesis, Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
| | - Tae-Lim Choi
- Department of Chemistry, Seoul National University, Seoul 08826, Republic of Korea
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15
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Jung H, Jung K, Hong M, Kwon S, Kim K, Hong SH, Choi TL, Baik MH. Understanding the Origin of the Regioselectivity in Cyclopolymerizations of Diynes and How to Completely Switch It. J Am Chem Soc 2018; 140:834-841. [DOI: 10.1021/jacs.7b11968] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Hoimin Jung
- Department
of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
- Center
for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, Republic of Korea
| | - Kijung Jung
- Department
of Chemistry, Seoul National University, Seoul 08826, Republic of Korea
| | - Mannkyu Hong
- Department
of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
- Center
for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, Republic of Korea
| | - Seongyeon Kwon
- Department
of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
- Center
for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, Republic of Korea
| | - Kunsoon Kim
- Department
of Chemistry, Seoul National University, Seoul 08826, Republic of Korea
| | - Soon Hyeok Hong
- Department
of Chemistry, Seoul National University, Seoul 08826, Republic of Korea
| | - Tae-Lim Choi
- Department
of Chemistry, Seoul National University, Seoul 08826, Republic of Korea
| | - Mu-Hyun Baik
- Department
of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
- Center
for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, Republic of Korea
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16
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Remya PR, Suresh CH. Mechanistic studies on acetylene cyclotrimerization catalyzed by Grubbs first and second generation catalysts. MOLECULAR CATALYSIS 2017. [DOI: 10.1016/j.mcat.2017.08.004] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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17
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18
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Kang C, Park H, Lee JK, Choi TL. Cascade Polymerization via Controlled Tandem Olefin Metathesis/Metallotropic 1,3-Shift Reactions for the Synthesis of Fully Conjugated Polyenynes. J Am Chem Soc 2017; 139:11309-11312. [DOI: 10.1021/jacs.7b04913] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Cheol Kang
- Department of Chemistry, Seoul National University, Seoul 08826, Korea
| | - Hyeon Park
- Department of Chemistry, Seoul National University, Seoul 08826, Korea
| | - Jin-Kyung Lee
- Department of Chemistry, Seoul National University, Seoul 08826, Korea
| | - Tae-Lim Choi
- Department of Chemistry, Seoul National University, Seoul 08826, Korea
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