1
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Cai Y, Binder WH. Triggered Crosslinking of Main-Chain Enediyne Polyurethanes via Bergman Cyclization. Macromol Rapid Commun 2023; 44:e2300440. [PMID: 37877520 DOI: 10.1002/marc.202300440] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Revised: 10/23/2023] [Indexed: 10/26/2023]
Abstract
Crosslinking chemistries occupy an important position in polymer modification with a particular importance when triggered in response to external stimuli. Enediyne (EDY) moieties are used as functional entities in this work, known to undergo a pericyclic Bergman cyclization (BC) to induce a triggered crosslinking of polyurethanes (PU) via the intermediately formed diradicals. Diamino-EDYs, where the distance between the enyne-moieties is known to be critical to induce a BC, are placed repetitively as main-chain structural elements in isophorone-based PUs to induce reinforcement upon heating, compression, or stretching. A 7-day compression under room temperature results in a ≈69% activation of the BC, together with the observation of an increase in tensile strength by 62% after 25 stretching cycles. The occurrence of BC is further proven by the decreased exothermic values in differential scanning calorimetry, together with characteristic peaks of the formed benzene moieties via IR spectroscopy. Purely heat-induced crosslinking contributes to 191% of the maximum tensile strength in comparison to the virgin PU. The BC herein forms an excellent crosslinking strategy, triggered by heat or force in PU materials.
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Affiliation(s)
- Yue Cai
- Macromolecular Chemistry, Institute of Chemistry, Faculty of Natural Science II, Martin Luther University Halle-Wittenberg, Von-Danckelmann-Platz 4, 06120, Halle (Saale), Germany
| | - Wolfgang H Binder
- Macromolecular Chemistry, Institute of Chemistry, Faculty of Natural Science II, Martin Luther University Halle-Wittenberg, Von-Danckelmann-Platz 4, 06120, Halle (Saale), Germany
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2
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Cai Y, Lehmann F, Peiter E, Chen S, Zhu J, Hinderberger D, Binder WH. Bergman cyclization of main-chain enediyne polymers for enhanced DNA cleavage. Polym Chem 2022. [DOI: 10.1039/d2py00259k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The design of novel polymers bearing multiple ene-diynes in the main chain are reported, allowing to tune activity of DNA cleavage via the Bergman cyclization.
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Affiliation(s)
- Yue Cai
- Macromolecular Chemistry, Institute of Chemistry, Faculty of Natural Science II (Chemistry, Physics and Mathematics), Martin-Luther-University Halle-Wittenberg, von-Danckelmann-Platz 4, Halle D-06120, Germany
| | - Florian Lehmann
- Physical Chemistry, Institute of Chemistry, Faculty of Natural Science II (Chemistry, Physics and Mathematics), Martin-Luther-University Halle-Wittenberg, von-Danckelmann-Platz 4, Halle D-06120, Germany
| | - Edgar Peiter
- Faculty of Natural Sciences III, Plant Nutrition Laboratory, Institute of Agricultural and Nutritional Sciences, Martin Luther University Halle-Wittenberg, Halle D-06099, Germany
| | - Senbin Chen
- Key Laboratory of Materials Chemistry for Energy Conversion and Storage, Ministry of Education (HUST), School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan 430074, China
| | - Jintao Zhu
- Key Laboratory of Materials Chemistry for Energy Conversion and Storage, Ministry of Education (HUST), School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan 430074, China
| | - Dariush Hinderberger
- Physical Chemistry, Institute of Chemistry, Faculty of Natural Science II (Chemistry, Physics and Mathematics), Martin-Luther-University Halle-Wittenberg, von-Danckelmann-Platz 4, Halle D-06120, Germany
| | - Wolfgang H. Binder
- Macromolecular Chemistry, Institute of Chemistry, Faculty of Natural Science II (Chemistry, Physics and Mathematics), Martin-Luther-University Halle-Wittenberg, von-Danckelmann-Platz 4, Halle D-06120, Germany
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3
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Saikia P, Gogoi S. Recent advances in decarbonylative annulation reactions. Org Biomol Chem 2021; 19:8853-8873. [PMID: 34606552 DOI: 10.1039/d1ob00891a] [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
In recent years, decarbonylative annulation reactions have emerged as one of the most efficient routes to construct a variety of important carbocyclic and heterocyclic scaffolds. The main advantages of this type of reaction are, first, the carbonyl compounds are used as the starting materials which are abundant in nature and second, the major by-product of this reaction is carbon monoxide. In the last two decades, various intramolecular and intermolecular decarbonylative annulation reactions have been performed using carbonyl compounds and alkenes/alkynes/arenes/isocyanates etc. as the annulation partners. These reactions are typically performed either in the presence of or in the absence of a metal catalyst. However, these reactions are still in their infancy as a very little progress has been achieved in these reactions. Through this review article, it is attempted to highlight the recent developments on various decarbonylative annulation reactions which ultimately lead to the formation of important structural moieties.
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Affiliation(s)
- Pallabi Saikia
- Chemical Science and Technology Division, CSIR-North East Institute of Science and Technology, Jorhat-785006, AcSIR, Ghaziabad-201 002, India. .,Department of Chemistry, Mangaldai College, Post Mangaldai, Upahupara, 784125, Assam, India.
| | - Sanjib Gogoi
- Chemical Science and Technology Division, CSIR-North East Institute of Science and Technology, Jorhat-785006, AcSIR, Ghaziabad-201 002, India.
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4
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Singha M, Bhattacharya P, Ray D, Basak A. Sterically hindering the trajectory of nucleophilic attack towards p-benzynes by a properly oriented hydrogen atom: an approach to achieve regioselectivity. Org Biomol Chem 2021; 19:5148-5154. [PMID: 34032259 DOI: 10.1039/d1ob00521a] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Nucleophilic addition to p-benzynes derived via Bergman cyclization has become a topic of keen interest. Studying the regioselectivity in such addition can reveal important information regarding the parameters controlling such addition. Recently, high regioselectivity has been achieved in nucleophilic addition to a p-benzyne derived from an ortho substituted benzo fused cyclic azaenediyne. Rather than having a freely rotating substitution, a rigid hydrogen atom coming from a suitable naptho fused enediyne and residing in the plane of the p-benzyne ring can offer hindrance to the trajectory of the nucleophile. This can lead to regioselectivity provided the other side remains relatively free of such hindrance. Based on that approach, halide addition to p-benzynes derived from naphtho fused cyclic azaenediynes was studied and a high level of regioselectivity was observed. Steric hindrance to the trajectory of nucleophile by the bay hydrogen was found to be the main cause of such regioselectivity; however, differential electrostatic potential as well as distortions at reactive centres have a minor role in controlling the regioselectivity. The products of such high yielding addition are the halo naphtho tetrahydroisoquinolines.
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Affiliation(s)
- Monisha Singha
- Department of Chemistry, Indian Institute of Technology, Kharagpur721302, India.
| | | | - Debashis Ray
- Department of Chemistry, Indian Institute of Technology, Kharagpur721302, India.
| | - Amit Basak
- Department of Chemistry, Indian Institute of Technology, Kharagpur721302, India. and School of Bioscience, Indian Institute of Technology, Kharagpur721302, India
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5
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Zhang M, Lu H, Li B, Ma H, Wang W, Cheng X, Ding Y, Hu A. Experimental and Computational Study on the Intramolecular Hydrogen Atom Transfer Reactions of Maleimide-Based Enediynes After Cycloaromatization. J Org Chem 2020; 86:1549-1559. [DOI: 10.1021/acs.joc.0c02401] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Mengsi Zhang
- Shanghai Key Laboratory of Advanced Polymeric Materials, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Haotian Lu
- Shanghai Key Laboratory of Advanced Polymeric Materials, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Baojun Li
- Shanghai Key Laboratory of Advanced Polymeric Materials, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Hailong Ma
- Shanghai Key Laboratory of Advanced Polymeric Materials, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Wenbo Wang
- Shanghai Key Laboratory of Advanced Polymeric Materials, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Xiaoyu Cheng
- Shanghai Key Laboratory of Advanced Polymeric Materials, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Yun Ding
- Shanghai Key Laboratory of Advanced Polymeric Materials, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Aiguo Hu
- Shanghai Key Laboratory of Advanced Polymeric Materials, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
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6
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Léger SJ, Marchetti B, Ashfold MNR, Karsili TNV. The Role of Norrish Type-I Chemistry in Photoactive Drugs: An ab initio Study of a Cyclopropenone-Enediyne Drug Precursor. Front Chem 2020; 8:596590. [PMID: 33425854 PMCID: PMC7793749 DOI: 10.3389/fchem.2020.596590] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Accepted: 11/25/2020] [Indexed: 01/01/2023] Open
Abstract
We present a contemporary mechanistic description of the light-driven conversion of cyclopropenone containing enediyne (CPE) precusors to ring-opened species amenable to further Bergman cyclization and formation of stable biradical species that have been proposed for use in light-induced cancer treatment. The transformation is rationalized in terms of (purely singlet state) Norrish type-I chemistry, wherein photoinduced opening of one C-C bond in the cyclopropenone ring facilitates non-adiabatic coupling to high levels of the ground state, subsequent loss of CO and Bergman cyclization of the enediyne intermediate to the cytotoxic target biradical species. Limited investigations of substituent effects on the ensuing photochemistry serve to vindicate the experimental choices of Popik and coworkers (J. Org. Chem., 2005, 70, 1297-1305). Specifically, replacing the phenyl moiety in the chosen model CPE by a 1,4-benzoquinone unit leads to a stronger, red-shifted parent absorption, and increases the exoergicity of the parent → biradical conversion.
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Affiliation(s)
- Spencer J. Léger
- Department of Chemistry, University of Louisiana at Lafayette, Lafayette, LA, United States
- Department of Chemical Engineering, University of Louisiana at Lafayette, Lafayette, LA, United States
| | - Barbara Marchetti
- Department of Chemistry, University of Louisiana at Lafayette, Lafayette, LA, United States
| | | | - Tolga N. V. Karsili
- Department of Chemistry, University of Louisiana at Lafayette, Lafayette, LA, United States
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7
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Danilkina NA, D'yachenko AS, Govdi AI, Khlebnikov AF, Kornyakov IV, Bräse S, Balova IA. Intramolecular Nicholas Reactions in the Synthesis of Heteroenediynes Fused to Indole, Triazole, and Isocoumarin. J Org Chem 2020; 85:9001-9014. [PMID: 32506914 DOI: 10.1021/acs.joc.0c00930] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The applicability of an intramolecular Nicholas reaction for the preparation of 10-membered O- and N-enediynes fused to indole, 1,2,3-triazole, and isocoumarin was investigated. The general approach to acyclic enediyne precursors fused to heterocycles includes inter- and intramolecular buta-1,3-diyne cyclizations with the formation of iodoethynylheterocycles, followed by Sonogashira coupling. The nature of both a heterocycle and a nucleophilic group affects the possibility of a 10-membered ring closure by the Nicholas reaction. Among oxacycles, an isocoumarin-fused enediyne was obtained. In the case of O-enediyne annulated with indole, instead of the formation of a 10-membered cycle, BF3-promoted addition of an OH-group to the proximal triple bond at the C3 position afforded dihydrofuryl-substituted indole. For 1,2,3-triazole-fused analogues, using NH-Ts as a nucleophilic functional group allowed obtaining 10-membered azaenediyne, while the substrate with a hydroxyl group gave only traces of the desired 10-membered oxacycle. An improved method for the deprotection of Co-complexes of cyclic enediynes using tetrabutylammonium fluoride in an acetone/water mixture and the investigation of the 10-membered enediynes' reactivity in the Bergman cyclization are also reported. In the solid state, all synthesized iodoethynylheterocycles were found to be involved in halogen bond (XB) formation with either O or N atoms as XB acceptors.
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Affiliation(s)
- Natalia A Danilkina
- Institute of Chemistry, Saint Petersburg State University (SPbU), Universitetskaya nab. 7/9, 199034 Saint Petersburg, Russia
| | - Alexander S D'yachenko
- Institute of Chemistry, Saint Petersburg State University (SPbU), Universitetskaya nab. 7/9, 199034 Saint Petersburg, Russia
| | - Anastasia I Govdi
- Institute of Chemistry, Saint Petersburg State University (SPbU), Universitetskaya nab. 7/9, 199034 Saint Petersburg, Russia
| | - Alexander F Khlebnikov
- Institute of Chemistry, Saint Petersburg State University (SPbU), Universitetskaya nab. 7/9, 199034 Saint Petersburg, Russia
| | - Ilya V Kornyakov
- Institute of Chemistry, Saint Petersburg State University (SPbU), Universitetskaya nab. 7/9, 199034 Saint Petersburg, Russia
| | - Stefan Bräse
- Institute of Organic Chemistry (IOC), Karlsruhe Institute of Technology (KIT), Fritz-Haber-Weg 6, 76131 Karlsruhe, Germany.,Institute of Biological and Chemical Systems-Functional Molecular Systems (IBCS-FMS), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Irina A Balova
- Institute of Chemistry, Saint Petersburg State University (SPbU), Universitetskaya nab. 7/9, 199034 Saint Petersburg, Russia
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8
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Li B, Zhang M, Lu H, Ma H, Wang Y, Chen H, Ding Y, Hu A. Coordination‐Accelerated Radical Formation from Acyclic Enediynes for Tumor Cell Suppression. Chem Asian J 2019; 14:4352-4357. [DOI: 10.1002/asia.201901182] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2019] [Revised: 10/21/2019] [Indexed: 12/12/2022]
Affiliation(s)
- Baojun Li
- Shanghai Key Laboratory of Advanced Polymeric MaterialsSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Mengsi Zhang
- Shanghai Key Laboratory of Advanced Polymeric MaterialsSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Haotian Lu
- Shanghai Key Laboratory of Advanced Polymeric MaterialsSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Hailong Ma
- Shanghai Key Laboratory of Advanced Polymeric MaterialsSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Yue Wang
- Shanghai Key Laboratory of Advanced Polymeric MaterialsSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Huimin Chen
- Shanghai Key Laboratory of Advanced Polymeric MaterialsSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Yun Ding
- Shanghai Key Laboratory of Advanced Polymeric MaterialsSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Aiguo Hu
- Shanghai Key Laboratory of Advanced Polymeric MaterialsSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
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9
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Mishiro K, Kimura T, Furuyama T, Kunishima M. Phototriggered Active Alkyne Generation from Cyclopropenones with Visible Light-Responsive Photocatalysts. Org Lett 2019; 21:4101-4105. [DOI: 10.1021/acs.orglett.9b01280] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Kenji Mishiro
- Institute for Frontier Science Initiative, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan
| | - Takeshi Kimura
- Faculty of Pharmaceutical Sciences, Institute of Medical, Pharmaceutical, and Health Sciences, Kanazawa University,
Kakuma-machi, Kanazawa 920-1192, Japan
| | - Taniyuki Furuyama
- Graduate School of Natural Science and Technology, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan
- Japan Science and Technology Agency (JST)-PRESTO, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
| | - Munetaka Kunishima
- Faculty of Pharmaceutical Sciences, Institute of Medical, Pharmaceutical, and Health Sciences, Kanazawa University,
Kakuma-machi, Kanazawa 920-1192, Japan
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10
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Cr(II)-promoted internal cyclization of acyclic enediynes fused to benzo[b]thiophene core: Macrocycles versus 2-methylenecycloalkan-1-ols formation. ARAB J CHEM 2019. [DOI: 10.1016/j.arabjc.2018.05.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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11
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Lyapunova AG, Danilkina NA, Rumyantsev AM, Khlebnikov AF, Chislov MV, Starova GL, Sambuk EV, Govdi AI, Bräse S, Balova IA. Relative Reactivity of Benzothiophene-Fused Enediynes in the Bergman Cyclization. J Org Chem 2018; 83:2788-2801. [DOI: 10.1021/acs.joc.7b03258] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Anna G. Lyapunova
- Institute
of Chemistry, Saint Petersburg State University (SPbSU), Universitetskaya
nab. 7/9, 199034 Saint Petersburg, Russia
| | - Natalia A. Danilkina
- Institute
of Chemistry, Saint Petersburg State University (SPbSU), Universitetskaya
nab. 7/9, 199034 Saint Petersburg, Russia
| | - Andrey M. Rumyantsev
- Department
of Genetics and Biotechnology, Saint Petersburg State University (SPbSU), Universitetskaya nab. 7/9, 199034 Saint Petersburg, Russia
| | - A. F. Khlebnikov
- Institute
of Chemistry, Saint Petersburg State University (SPbSU), Universitetskaya
nab. 7/9, 199034 Saint Petersburg, Russia
| | - Mikhail V. Chislov
- Research
Centre for Thermogravimetric and Calorimetric Research, St. Petersburg State University, Universitetskaya nab. 7/9, 199034 Saint Petersburg, Russia
| | - Galina L. Starova
- Institute
of Chemistry, Saint Petersburg State University (SPbSU), Universitetskaya
nab. 7/9, 199034 Saint Petersburg, Russia
| | - Elena V. Sambuk
- Department
of Genetics and Biotechnology, Saint Petersburg State University (SPbSU), Universitetskaya nab. 7/9, 199034 Saint Petersburg, Russia
| | - Anastasia I. Govdi
- Institute
of Chemistry, Saint Petersburg State University (SPbSU), Universitetskaya
nab. 7/9, 199034 Saint Petersburg, Russia
| | - Stefan Bräse
- Institute
of Organic Chemistry (IOC), Karlsruhe Institute of Technology (KIT), Fritz-Haber-Weg 6, 76131 Karlsruhe, Germany
- Institute
of Toxicology and Genetics (ITG), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, D-76344 Eggenstein-Leopoldshafen, Germany
| | - Irina A. Balova
- Institute
of Chemistry, Saint Petersburg State University (SPbSU), Universitetskaya
nab. 7/9, 199034 Saint Petersburg, Russia
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12
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Watanabe T, Geib SJ, Curran DP, Taniguchi T. N-Heterocyclic Carbene Boranes are Hydrogen Donors in Masamune-Bergman Reactions of Benzo[3,4]cyclodec-3-ene-1,5-diynes. J Org Chem 2017; 82:13034-13042. [PMID: 29120175 DOI: 10.1021/acs.joc.7b01981] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Thermal reactions of benzo[3,4]cyclodec-3-ene-1,5-diyne with N-heterocyclic carbene boranes (NHC-boranes) provided mixtures of 9-borylated 1,2,3,4-tetrahydroanthracenes along with 1,2,3,4-tetrahydroanthracene. These products indicate that NHC-boranes serve as hydrogen donors to a p-benzyne intermediate formed by the Masamune-Bergman reaction. Experimental results support a radical mechanism in nonpolar solvents, but suggest that ionic mechanisms compete in the production of 1,2,3,4-tetrahydroanthracene when the reaction is performed in a polar solvent.
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Affiliation(s)
- Takashi Watanabe
- School of Pharmaceutical Sciences, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University , Kakuma-machi, Kanazawa 920-1192, Japan
| | - Steven J Geib
- Department of Chemistry, University of Pittsburgh , Pittsburgh, Pennsylvania 15260, United States
| | - Dennis P Curran
- Department of Chemistry, University of Pittsburgh , Pittsburgh, Pennsylvania 15260, United States
| | - Tsuyoshi Taniguchi
- School of Pharmaceutical Sciences, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University , Kakuma-machi, Kanazawa 920-1192, Japan
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13
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Qin P, Cope SK, Steger H, Veccharelli KM, Holland RL, Hitt DM, Moore CE, Baldridge KK, O’Connor JM. Photoactivated Transition-Metal Triggers for Ambient Temperature Enediyne and Dienyne Cyclization: Ruthenium-η6-Naphthalene Complexes. Organometallics 2017. [DOI: 10.1021/acs.organomet.7b00589] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Pengjin Qin
- Department
of Chemistry, University of California, San Diego, La Jolla, California 92093, United States
| | - Stephen K. Cope
- Department
of Chemistry, University of California, San Diego, La Jolla, California 92093, United States
| | - Han Steger
- Department
of Chemistry, University of California, San Diego, La Jolla, California 92093, United States
| | - Kate M. Veccharelli
- Department
of Chemistry, University of California, San Diego, La Jolla, California 92093, United States
| | - Ryan L. Holland
- Department
of Chemistry, University of California, San Diego, La Jolla, California 92093, United States
| | - David M. Hitt
- Department
of Chemistry, University of California, San Diego, La Jolla, California 92093, United States
| | - Curtis E. Moore
- Department
of Chemistry, University of California, San Diego, La Jolla, California 92093, United States
| | - Kim K. Baldridge
- School
of Pharmaceutical Science and Technology, Tianjin University, 92 Weijin Road, Nankai District, Tianjin, 300072, People’s Republic of China
| | - Joseph M. O’Connor
- Department
of Chemistry, University of California, San Diego, La Jolla, California 92093, United States
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14
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Chen S, Huang B, Sun S, Ding Y, Hu A. Unexpected [2+2] Photocycloaddition between Enediyne Compounds in Solid State. ASIAN J ORG CHEM 2017. [DOI: 10.1002/ajoc.201700095] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Shudan Chen
- Shanghai Key Laboratory of Advanced Polymeric Materials; School of Materials Science and Engineering; East China University of Science and Technology; Shanghai 2 00237 China
| | - Binlei Huang
- Shanghai Key Laboratory of Advanced Polymeric Materials; School of Materials Science and Engineering; East China University of Science and Technology; Shanghai 2 00237 China
| | - Shiyuan Sun
- Shanghai Key Laboratory of Advanced Polymeric Materials; School of Materials Science and Engineering; East China University of Science and Technology; Shanghai 2 00237 China
| | - Yun Ding
- Shanghai Key Laboratory of Advanced Polymeric Materials; School of Materials Science and Engineering; East China University of Science and Technology; Shanghai 2 00237 China
| | - Aiguo Hu
- Shanghai Key Laboratory of Advanced Polymeric Materials; School of Materials Science and Engineering; East China University of Science and Technology; Shanghai 2 00237 China
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15
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Das J, Roy S, Halnor S, Das AK, Basak A. Enediyne-based protein capture agents: demonstration of an enediyne moiety acting as a photoaffinity label. Org Biomol Chem 2017; 15:1122-1129. [DOI: 10.1039/c6ob02075e] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Two enediyne based protein-capture compounds 1 and 2 were synthesized.
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Affiliation(s)
- Joyee Das
- Department of Chemistry
- Indian Institute of Technology Kharagpur
- Kharagpur-721302
- India
| | - Sayantani Roy
- School of Bioscience
- Indian Institute of Technology Kharagpur
- Kharagpur-721302
- India
| | - Swapnil Halnor
- Department of Chemistry
- Indian Institute of Technology Kharagpur
- Kharagpur-721302
- India
| | - Amit Kumar Das
- School of Bioscience
- Indian Institute of Technology Kharagpur
- Kharagpur-721302
- India
| | - Amit Basak
- Department of Chemistry
- Indian Institute of Technology Kharagpur
- Kharagpur-721302
- India
- School of Bioscience
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16
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Sutton DA, Yu SH, Steet R, Popik VV. Cyclopropenone-caged Sondheimer diyne (dibenzo[a,e]cyclooctadiyne): a photoactivatable linchpin for efficient SPAAC crosslinking. Chem Commun (Camb) 2016; 52:553-6. [PMID: 26538499 PMCID: PMC4689622 DOI: 10.1039/c5cc08106h] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The first fully conjugated bis-cyclopropenone (photo-DIBOD), a derivative of dibenzo[a,e][8]annulene, has been synthesized. 350-420 nm irradiation of this robust compound results in the efficient formation of dibenzo [a,e] cyclooctadiyne, an unstable, but useful SPAAC cross-linking reagent. Since photo-DIBO doesn't react with organic azides, this method allows for the spatiotemporal control of the ligation of two azide-tagged substrates.
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Affiliation(s)
- Dewey A Sutton
- Department of Chemistry, University of Georgia, Athens, GA 30602, USA.
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17
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Raviola C, Protti S, Ravelli D, Fagnoni M. (Hetero)aromatics from dienynes, enediynes and enyne–allenes. Chem Soc Rev 2016; 45:4364-90. [DOI: 10.1039/c6cs00128a] [Citation(s) in RCA: 64] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Recent advances in the synthesis of (hetero)aromatics starting from polyenes, such as dienynes, enediynes and enyne–allenes, are discussed.
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18
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Danilkina NA, Lyapunova AG, Khlebnikov AF, Starova GL, Bräse S, Balova IA. Ring-Closing Metathesis of Co2(CO)6–Alkyne Complexes for the Synthesis of 11-Membered Dienediynes: Overcoming Thermodynamic Barriers. J Org Chem 2015; 80:5546-55. [DOI: 10.1021/acs.joc.5b00409] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Natalia A. Danilkina
- Institute
of Chemistry, Saint Petersburg State University, Universitetskiy pr. 26, 198504 Saint Petersburg, Russia
| | - Anna G. Lyapunova
- Institute
of Chemistry, Saint Petersburg State University, Universitetskiy pr. 26, 198504 Saint Petersburg, Russia
| | - Alexander F. Khlebnikov
- Institute
of Chemistry, Saint Petersburg State University, Universitetskiy pr. 26, 198504 Saint Petersburg, Russia
| | - Galina L. Starova
- Institute
of Chemistry, Saint Petersburg State University, Universitetskiy pr. 26, 198504 Saint Petersburg, Russia
| | - Stefan Bräse
- Institute
of Organic Chemistry, Karlsruhe Institute of Technology, Campus
South, Fritz-Haber-Weg 6, 76131 Karlsruhe, Germany
- Institute
of Toxicology and Genetics, Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, D-76344 Eggenstein-Leopoldshafen, Germany
| | - Irina A. Balova
- Institute
of Chemistry, Saint Petersburg State University, Universitetskiy pr. 26, 198504 Saint Petersburg, Russia
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19
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Song D, Sun S, Tian Y, Huang S, Ding Y, Yuan Y, Hu A. Maleimide-based acyclic enediyne for efficient DNA-cleavage and tumor cell suppression. J Mater Chem B 2015; 3:3195-3200. [DOI: 10.1039/c4tb02018a] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
A pH-sensitive acyclic enediyne (1) was synthesized for efficient DNA-cleavage and tumor cell suppression.
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Affiliation(s)
- Depeng Song
- Shanghai Key Laboratory of Advanced Polymeric Materials
- School of Materials Science and Engineering
- East China University of Science and Technology
- Shanghai
- China
| | - Shiyuan Sun
- Shanghai Key Laboratory of Advanced Polymeric Materials
- School of Materials Science and Engineering
- East China University of Science and Technology
- Shanghai
- China
| | - Yu Tian
- The State Key Laboratory of Bioreactor Engineering
- East China University of Science and Technology
- Shanghai
- China
| | - Shuai Huang
- Shanghai Key Laboratory of Advanced Polymeric Materials
- School of Materials Science and Engineering
- East China University of Science and Technology
- Shanghai
- China
| | - Yun Ding
- Department of Chemistry and Applied Biosciences
- Eidgenössische Technische Hochschule Zurich and Facoltà di Informatica
- Instituto di Scienze Computationali
- Università della Svizzera Italiana
- CH-6900 Lugano
| | - Yuan Yuan
- The State Key Laboratory of Bioreactor Engineering
- East China University of Science and Technology
- Shanghai
- China
| | - Aiguo Hu
- Shanghai Key Laboratory of Advanced Polymeric Materials
- School of Materials Science and Engineering
- East China University of Science and Technology
- Shanghai
- China
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20
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Danilkina NA, Kulyashova AE, Khlebnikov AF, Bräse S, Balova IA. Electrophilic Cyclization of Aryldiacetylenes in the Synthesis of Functionalized Enediynes Fused to a Heterocyclic Core. J Org Chem 2014; 79:9018-45. [DOI: 10.1021/jo501396s] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- N. A. Danilkina
- Institute
of Chemistry, Saint Petersburg State University, Universitetskiy pr. 26, 198504 Saint Petersburg, Russia
| | - A. E. Kulyashova
- Institute
of Chemistry, Saint Petersburg State University, Universitetskiy pr. 26, 198504 Saint Petersburg, Russia
| | - A. F. Khlebnikov
- Institute
of Chemistry, Saint Petersburg State University, Universitetskiy pr. 26, 198504 Saint Petersburg, Russia
| | - S. Bräse
- Institute
of Organic Chemistry, Karlsruhe Institute of Technology, Campus South, Fritz-Haber-Weg 6, 76131 Karlsruhe, Germany
- Institute of Toxicology and Genetics, Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, D-76344 Eggenstein-Leopoldshafen, Germany
| | - I. A. Balova
- Institute
of Chemistry, Saint Petersburg State University, Universitetskiy pr. 26, 198504 Saint Petersburg, Russia
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21
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Zhang CP, Chen QY, Guo Y, Xiao JC, Gu YC. Difluoromethylation and trifluoromethylation reagents derived from tetrafluoroethane β-sultone: Synthesis, reactivity and applications. Coord Chem Rev 2014. [DOI: 10.1016/j.ccr.2013.11.010] [Citation(s) in RCA: 81] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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22
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Affiliation(s)
- Manabu Abe
- Department of Chemistry, Graduate School of Science, Hiroshima University (HIRODAI), 1-3-1 Kagamiyama, Higashi-Hiroshima,
Hiroshima 739-8526, Japan
- Institute for Molecular Science (IMS), Okazaki, Aichi 444-8787,
Japan
- JST-CREST, 5
Sanbancho,
Chiyodaku, Tokyo 102-0075, Japan
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23
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Mohamed RK, Peterson PW, Alabugin IV. Concerted Reactions That Produce Diradicals and Zwitterions: Electronic, Steric, Conformational, and Kinetic Control of Cycloaromatization Processes. Chem Rev 2013; 113:7089-129. [DOI: 10.1021/cr4000682] [Citation(s) in RCA: 166] [Impact Index Per Article: 15.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Rana K. Mohamed
- Department of Chemistry
and Biochemistry, Florida State University, Tallahassee, Florida 32306-4390,
United States
| | - Paul W. Peterson
- Department of Chemistry
and Biochemistry, Florida State University, Tallahassee, Florida 32306-4390,
United States
| | - Igor V. Alabugin
- Department of Chemistry
and Biochemistry, Florida State University, Tallahassee, Florida 32306-4390,
United States
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24
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Samanta D, Cinar ME, Das K, Schmittel M. Nonstatistical Dynamic Effects in the Thermal C2–C6 Diels–Alder Cyclization of Enyne–Allenes. J Org Chem 2013; 78:1451-62. [DOI: 10.1021/jo302524a] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Debabrata Samanta
- Department
of Chemistry and Biology, Universität Siegen, Adolf-Reichwein-Strasse, D-57068 Siegen, Germany
| | - Mehmet Emin Cinar
- Department
of Chemistry and Biology, Universität Siegen, Adolf-Reichwein-Strasse, D-57068 Siegen, Germany
| | - Kalpataru Das
- Department
of Chemistry and Biology, Universität Siegen, Adolf-Reichwein-Strasse, D-57068 Siegen, Germany
| | - Michael Schmittel
- Department
of Chemistry and Biology, Universität Siegen, Adolf-Reichwein-Strasse, D-57068 Siegen, Germany
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25
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Danilkina N, Nieger M, Selivanov S, Bräse S, Balova I. Electrophilic Cyclization and Ring-Closing Metathesis as Key Steps in the Synthesis of a 12-Membered Cyclic Enediyne. European J Org Chem 2012. [DOI: 10.1002/ejoc.201200881] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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26
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Fang SK, Lin HY, Chen KY. 1,2-Bis(dibromomethyl)benzene. Acta Crystallogr Sect E Struct Rep Online 2012; 68:o5. [PMID: 22259552 PMCID: PMC3254285 DOI: 10.1107/s1600536811050616] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2011] [Accepted: 11/25/2011] [Indexed: 11/20/2022]
Abstract
In the title compound, C8H6Br4, intramolecular C—H⋯Br hydrogen bonds generate two S(6) rings. The two geminal bromine-atom substituents point to opposite sides of the aromatic ring system. In the crystal, molecules are linked by intermolecular π–π interactions with centroid–centroid distances of 3.727 (9) and 3.858 (9) Å.
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27
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Breiner B, Kaya K, Roy S, Yang WY, Alabugin IV. Hybrids of amino acids and acetylenic DNA-photocleavers: optimising efficiency and selectivity for cancer phototherapy. Org Biomol Chem 2012; 10:3974-87. [DOI: 10.1039/c2ob00052k] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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28
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Wang S, Li P, Yu L, Wang L. Sequential and One-Pot Reactions of Phenols with Bromoalkynes for the Synthesis of (Z)-2-Bromovinyl Phenyl Ethers and Benzo[b]furans. Org Lett 2011; 13:5968-71. [DOI: 10.1021/ol202383z] [Citation(s) in RCA: 109] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Shihua Wang
- Department of Chemistry, Huaibei Normal University, Huaibei, Anhui 235000, P. R. China
| | - Pinhua Li
- Department of Chemistry, Huaibei Normal University, Huaibei, Anhui 235000, P. R. China
| | - Lin Yu
- Department of Chemistry, Huaibei Normal University, Huaibei, Anhui 235000, P. R. China
| | - Lei Wang
- Department of Chemistry, Huaibei Normal University, Huaibei, Anhui 235000, P. R. China
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29
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Zhu B, Qian G, Xiao Y, Deng S, Wang M, Hu A. A convergence of photo-bergman cyclization and intramolecular chain collapse towards polymeric nanoparticles. ACTA ACUST UNITED AC 2011. [DOI: 10.1002/pola.25013] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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30
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Schmittel M, Vavilala C, Cinar ME. The thermal C2
-C6
(Schmittel)/ene cyclization of enyne-allenes - crossing the boundary between classical and nonstatistical kinetics. J PHYS ORG CHEM 2011. [DOI: 10.1002/poc.1887] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Michael Schmittel
- FB 8 (Chemie-Biologie); Universität Siegen; Adolf-Reichwein-Str. D-57068 Siegen Germany
| | | | - Mehmet Emin Cinar
- FB 8 (Chemie-Biologie); Universität Siegen; Adolf-Reichwein-Str. D-57068 Siegen Germany
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31
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Vinogradova OV, Balova IA, Popik VV. Synthesis and Reactivity of Cinnoline-Fused Cyclic Enediyne. J Org Chem 2011; 76:6937-41. [DOI: 10.1021/jo201148h] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Olga V. Vinogradova
- Department of Chemistry, University of Georgia, Athens, Georgia 30602, United States
| | - Irina A. Balova
- Department of Chemistry, St. Petersburg State University, 198504 St. Petersburg, Russian Federation
| | - Vladimir V. Popik
- Department of Chemistry, University of Georgia, Athens, Georgia 30602, United States
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32
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Abstract
This critical review discusses recent developments in the field of cyclopropene chemistry. Although several excellent reviews that mainly focused on the thermolysis and pyrolysis as well as metal-mediated reactions of cyclopropenes have been published, significant new developments have also been achieved in recent years. This brand new review provides an overview of the progress from 2007 to 2011 on the syntheses and transformations of cyclopropenes as well as their related mechanistic studies (238 references).
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Affiliation(s)
- Zhi-Bin Zhu
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, China 200032
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33
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Zhegalova NG, Popik VV. Wolff rearrangement of β-alkynyl-α-diazo-β-ketoesters: light-induced acetylene-allene isomerization and its use for activation of enediynes. J PHYS ORG CHEM 2011. [DOI: 10.1002/poc.1875] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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34
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Zhou H, Xing Y, Yao J, Lu Y. Heteroatom as a promotor: synthesis of polyfunctionalized benzenes and naphthalenes. J Org Chem 2011; 76:4582-90. [PMID: 21557630 DOI: 10.1021/jo2004555] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Construction of a new benzene via the electrocyclization of diene-allene is an efficient protocol to access polysubstituted benzenes from simple, readily available starting materials. In this paper, we present a comprehensive study of a heteroatom-promoted propargyl-allenyl isomerization and electrocyclization for the facile and efficient synthesis of polyfunctionalized benzenes and naphthalenes. As a result of the readily accessible starting materials, simple operation, and mild conditions, this reaction should be an appealing strategy in organic synthesis.
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Affiliation(s)
- Hongwei Zhou
- Department of Chemistry, Zhejiang University (Campus Xixi), Hangzhou, PR China.
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35
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Usanov DL, Yamamoto H. Enantioselective Alkynylation of Aldehydes with 1-Haloalkynes Catalyzed by Tethered Bis(8-quinolinato) Chromium Complex. J Am Chem Soc 2011; 133:1286-9. [DOI: 10.1021/ja1102822] [Citation(s) in RCA: 67] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Dmitry L. Usanov
- Department of Chemistry, The University of Chicago, 5735 South Ellis Avenue, Chicago, Illinois 60637, United States
| | - Hisashi Yamamoto
- Department of Chemistry, The University of Chicago, 5735 South Ellis Avenue, Chicago, Illinois 60637, United States
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36
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Yang X, Li Z, Zhi J, Ma J, Hu A. Synthesis of ultrathin mesoporous carbon through Bergman cyclization of enediyne self-assembled monolayers in SBA-15. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:11244-11248. [PMID: 20586413 DOI: 10.1021/la1005727] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
In this work, a bottom-up synthesis of ultrathin mesoporous carbon was developed through Bergman cyclization of enediyne containing compounds immobilized inside of SBA-15 nanochannels and followed by pyrolysis. Raman spectroscopy confirmed the occurrence of thermal Bergman cyclization inside the channels. Further heating under elevated temperature produced nanotube arrays in good yield. TEM images revealed the formation of interconnected tubular carbon due to the microtunnels of template. Raman spectra showed moderate degree of graphitization. Formation of enediyne SAMs on a template followed by the processing sequence developed in this work is promising to construct carbon materials with various nanoscopic morphology, such as carbon nanotube, graphene, and giant fullerene.
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Affiliation(s)
- Xi Yang
- Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, 200237, China
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37
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Poloukhtine AA, Mbua NE, Wolfert MA, Boons GJ, Popik VV. Selective labeling of living cells by a photo-triggered click reaction. J Am Chem Soc 2010; 131:15769-76. [PMID: 19860481 DOI: 10.1021/ja9054096] [Citation(s) in RCA: 299] [Impact Index Per Article: 21.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Phototriggering of the metal-free azide to acetylene cycloaddition reaction was achieved by masking the triple bond of dibenzocyclooctynes as cyclopropenone. Such masked cyclooctynes do not react with azides in the dark. Irradiation of cyclopropenones results in the efficient (Phi(355) = 0.33) and clean regeneration of the corresponding dibenzocyclooctynes, which then undergo facile catalyst-free cycloadditions with azides to give corresponding triazoles under ambient conditions. In situ light activation of a cyclopropenone linked to biotin made it possible to label living cells expressing glycoproteins containing N-azidoacetyl-sialic acid. The cyclopropenone-based phototriggered click chemistry offers exciting opportunities to label living organisms in a temporally and spatially controlled manner and may facilitate the preparation of microarrays.
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38
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Liang ZX. Complexity and simplicity in the biosynthesis of enediyne natural products. Nat Prod Rep 2010; 27:499-528. [DOI: 10.1039/b908165h] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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39
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Tanaka H, Tanaka Y, Minoshima M, Yamaguchi S, Fuse S, Doi T, Kawauchi S, Sugiyama H, Takahashi T. Synthesis of bicyclic enediynes that possess a photosensitive triggering device and exhibit strong DNA cleaving activity. Chem Commun (Camb) 2010; 46:5942-4. [DOI: 10.1039/c0cc01286f] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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40
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Chen Z, Jiang H, Li Y, Qi C. Highly efficient two-step synthesis of (Z)-2-halo-1-iodoalkenes from terminal alkynes. Chem Commun (Camb) 2010; 46:8049-51. [DOI: 10.1039/c0cc02156c] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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41
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Kuzmin AV, Popik VV. Dual reactivity of a photochemically-generated cyclic enyne–allene. Chem Commun (Camb) 2009:5707-9. [DOI: 10.1039/b911871c] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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