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Transition-Metal-Free Synthesis of Symmetrical 1,4-diarylsubstituted 1,3-Diynes By Iodine-Mediated Decarboxylative Homocoupling of Arylpropiolic Acids. Tetrahedron Lett 2022. [DOI: 10.1016/j.tetlet.2022.153908] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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2
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Ghosh S, Ghosh R, Chattopadhyay SK. Oxidant- and additive-free simple synthesis of 1,1,2-triiodostyrenes by one-pot decaroboxylative iodination of propiolic acids. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.152378] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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3
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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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Sun B, Lux DM, Patterson EV, Goroff NS. Building Shape-Persistent Arylene Ethynylene Macrocycles as Scaffolds for 1,4-Diiodobutadiyne. J Org Chem 2020; 85:7641-7647. [PMID: 32470301 DOI: 10.1021/acs.joc.9b02859] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Two shape-persistent arylene ethynylene macrocycles have been designed and synthesized as scaffolds to bind the nonpolar molecule 1,4-diiodobutadiyne. Binding via halogen bonding interactions between the pyridine moieties of the macrocycle and 1,4-diiodobutadiyne is predicted by density functional theory calculations and has been demonstrated in solution by 13C NMR titrations. The binding constant for the macrocycle-monomer complex (K = 10.5 L mol-1) is much larger than for other comparable halogen bonds, strongly supporting cooperative binding of both ends of the diyne. These results demonstrate a fully inserted geometry of 1,4-diiodobutadiyne in the complex.
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Affiliation(s)
- Bin Sun
- Department of Chemistry, Stony Brook University, Stony Brook, New York 11794-3400, United States
| | - Daniel M Lux
- Department of Chemistry, Stony Brook University, Stony Brook, New York 11794-3400, United States
| | - Eric V Patterson
- Department of Chemistry, Stony Brook University, Stony Brook, New York 11794-3400, United States
| | - Nancy S Goroff
- Department of Chemistry, Stony Brook University, Stony Brook, New York 11794-3400, United States
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DeCicco RC, Luo L, Goroff NS. Exploiting Unsaturated Carbon-Iodine Compounds for the Preparation of Carbon-Rich Materials. Acc Chem Res 2019; 52:2080-2089. [PMID: 31368686 DOI: 10.1021/acs.accounts.9b00247] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Conjugated carbon-rich materials have drawn much academic and industrial attention in recent years, due to their intriguing electronic and optical properties and potential applications including organic photovoltaics, flexible and wearable electronics, and chemical and biological sensors. Unsaturated carbon-iodine compounds, mainly the derivatives of iodoalkenes and iodoalkynes, are a class of molecules in which iodine atoms are directly connected to unsaturated carbons. These compounds provide unique advantages in the pursuit of carbon-rich materials, largely due to the Lewis acidity of iodine atoms and the lability of the carbon-iodine bonds. The Lewis acidity and electrophilicity of iodine in unsaturated carbon-iodine compounds make them excellent donors of halogen bonding, which is an attractive interaction between the electrophilic halogen atoms and Lewis basic species. Halogen bonding has emerged as a reliable building block in crystal engineering and supramolecular architectures. In this Account, we illustrate examples of the controlled assembly of diiodopolyynes within host-guest cocrystals that contain oxalamide or urea hosts with appropriate Lewis basic end groups and diiodobutadiyne or diiodohexatriyne guests. Halogen bonding interactions between the host and guest result in an ordered alignment of the diiodopolyynes that allows for a solid-state topochemical polymerization. We have used this approach to prepare poly(diiododiacetylene), PIDA, and poly(iodoethynyliododiacetylene), PIEDA, two conjugated polymers composed only of carbon and iodine. In addition, the polarity of the carbon-iodine bond gives unsaturated carbon-iodine compounds an electron-rich π-system, permitting electrophilic addition reactions with molecular halogens. The halogenated products of these additions can then serve as precursors to other conjugated carbon-rich systems. The lability of the carbon-iodine bond, together with the polarizability of iodine and the higher electronegativity of sp- and sp2-hybridized carbons, open up further possibilities in pursuing novel carbon nanomaterials from unsaturated carbon-iodine compounds. For example, we have developed an iterative method for the synthesis of longer symmetric polyynes from shorter diiodopolyynes, using Stille coupling to the iodine-capped polyynes. The iodination/coupling cycle symmetrically lengthens the polyyne chain by two carbon-carbon triple bonds. This method is particularly helpful for preparing polyynes with an odd number of carbon-carbon triple bonds. In addition, the lability of the carbon-iodine bonds of PIDA leads to facile carbonization by pyrolysis or laser irradiation. More strikingly, diiodoalkenes undergo quantitative elimination of iodine in the presence of Lewis bases. This reaction can be used to eliminate iodine at room temperature from PIDA, in which the carbon-iodine bonds are much more easily broken than in the diiodopolyynes, resulting in graphitic carbon materials.
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Affiliation(s)
- Racquel C. DeCicco
- Department of Chemistry, State University of New York, Stony Brook, New York 11794-3400, United States
- Department of Chemistry and Physics, Wagner College, Staten Island, New York 10301, United States
| | - Liang Luo
- Department of Chemistry, State University of New York, Stony Brook, New York 11794-3400, United States
- National Engineering Research Center for Nanomedicine, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, Hubei 430074, China
| | - Nancy S. Goroff
- Department of Chemistry, State University of New York, Stony Brook, New York 11794-3400, United States
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Sadhukhan S, Baire B. Lewis Basicity of Water for a Selective Monodehalogenation of α,α-Dihalo Ketones to α-Halo Ketones and Mechanistic Study. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201701233] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Santu Sadhukhan
- Department of Chemistry; Indian Institute of Technology Madras; Chennai 600036 India
| | - Beeraiah Baire
- Department of Chemistry; Indian Institute of Technology Madras; Chennai 600036 India
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Huang H, Tang L, Han X, He G, Xi Y, Zhu H. Regioselective iodoamination of terminal ynamides for the synthesis of α-amino-β,β-diiodo-enamides. Chem Commun (Camb) 2016; 52:4321-4. [DOI: 10.1039/c6cc00370b] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We developed the intermolecular iodoamination of terminal ynamides for the synthesis of α-amino-β,β-diiodo-enamides.
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Affiliation(s)
- Hai Huang
- Department of Applied Chemistry
- College of Chemistry and Molecular Engineering
- Nanjing Tech University
- Nanjing 211816
- People's Republic of China
| | - Luning Tang
- Department of Applied Chemistry
- College of Chemistry and Molecular Engineering
- Nanjing Tech University
- Nanjing 211816
- People's Republic of China
| | - Xiaobo Han
- Department of Applied Chemistry
- College of Chemistry and Molecular Engineering
- Nanjing Tech University
- Nanjing 211816
- People's Republic of China
| | - Guangke He
- Department of Applied Chemistry
- College of Chemistry and Molecular Engineering
- Nanjing Tech University
- Nanjing 211816
- People's Republic of China
| | - Yang Xi
- Department of Applied Chemistry
- College of Chemistry and Molecular Engineering
- Nanjing Tech University
- Nanjing 211816
- People's Republic of China
| | - Hongjun Zhu
- Department of Applied Chemistry
- College of Chemistry and Molecular Engineering
- Nanjing Tech University
- Nanjing 211816
- People's Republic of China
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Jin H, Young CN, Halada GP, Phillips BL, Goroff NS. Synthesis of the Stable Ordered Conjugated Polymer Poly(dibromodiacetylene) from an Explosive Monomer. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201504713] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Hongjian Jin
- Department of Chemistry, Stony Brook University, Stony Brook, NY 11794‐3400 (USA)
| | - Christopher N. Young
- Department of Materials Science and Engineering, Stony Brook University, Stony Brook, NY 11794‐2275 (USA)
| | - Gary P. Halada
- Department of Materials Science and Engineering, Stony Brook University, Stony Brook, NY 11794‐2275 (USA)
| | - Brian L. Phillips
- Department of Geosciences, Stony Brook University, Stony Brook, NY 11794‐2100 (USA)
| | - Nancy S. Goroff
- Department of Chemistry, Stony Brook University, Stony Brook, NY 11794‐3400 (USA)
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Jin H, Young CN, Halada GP, Phillips BL, Goroff NS. Synthesis of the Stable Ordered Conjugated Polymer Poly(dibromodiacetylene) from an Explosive Monomer. Angew Chem Int Ed Engl 2015; 54:14690-5. [PMID: 26447456 DOI: 10.1002/anie.201504713] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2015] [Revised: 08/10/2015] [Indexed: 11/09/2022]
Abstract
Dibromobutadiyne is an extremely unstable compound that explodes at room temperature, even under inert atmosphere. This instability has limited the studies of dibromobutadiyne almost entirely to spectroscopic characterization. Here we report an approach to control the reactivity of dibromobutadiyne, via topochemical reaction in cocrystals, leading to the ordered polymer poly(dibromodiacetylene), PBDA. At low temperatures (-15 to -18 °C), dibromobutadiyne can form cocrystals with oxalamide host molecules containing either pyridyl or nitrile side groups, in which halogen bonds align the dibromobutadiyne monomers for topochemical polymerization. The cocrystals with the bis(nitrile) oxalamide host undergo complete ordered polymerization to PBDA, demonstrated by solid-state MAS-NMR, Raman, and optical absorption spectroscopy. Once formed, the polymer can be separated from the host; unlike the monomer, PBDA is stable at room temperature.
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Affiliation(s)
- Hongjian Jin
- Department of Chemistry, Stony Brook University, Stony Brook, NY 11794-3400 (USA)
| | - Christopher N Young
- Department of Materials Science and Engineering, Stony Brook University, Stony Brook, NY 11794-2275 (USA)
| | - Gary P Halada
- Department of Materials Science and Engineering, Stony Brook University, Stony Brook, NY 11794-2275 (USA)
| | - Brian L Phillips
- Department of Geosciences, Stony Brook University, Stony Brook, NY 11794-2100 (USA)
| | - Nancy S Goroff
- Department of Chemistry, Stony Brook University, Stony Brook, NY 11794-3400 (USA).
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Kagawa N, Suzuki M, Kogure N, Toume K. Characterization of organic iodides with iodine-127 nuclear magnetic resonance spectroscopy. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2015.09.016] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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