1
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Melesi S, Marabotti P, Milani A, Pigulski B, Gulia N, Pińkowski P, Szafert S, Del Zoppo M, Castiglioni C, Casari CS. Impact of Halogen Termination and Chain Length on π-Electron Conjugation and Vibrational Properties of Halogen-Terminated Polyynes. J Phys Chem A 2024; 128:2703-2716. [PMID: 38507898 PMCID: PMC11017249 DOI: 10.1021/acs.jpca.3c07915] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Revised: 02/19/2024] [Accepted: 02/22/2024] [Indexed: 03/22/2024]
Abstract
We explored the optoelectronic and vibrational properties of a new class of halogen-terminated carbon atomic wires in the form of polyynes using UV-vis, infrared absorption, Raman spectroscopy, X-ray single-crystal diffraction, and DFT calculations. These polyynes terminate on one side with a cyanophenyl group and on the other side, with a halogen atom X (X = Cl, Br, I). We focus on the effect of different halogen terminations and increasing lengths (i.e., 4, 6, and 8 sp-carbon atoms) on the π-electron conjugation and the electronic structure of these systems. The variation in the sp-carbon chain length is more effective in tuning these features than changing the halogen end group, which instead leads to a variety of solid-state architectures. Shifts between the vibrational frequencies of samples in crystalline powders and in solution reflect intermolecular interactions. In particular, the presence of head-to-tail dimers in the crystals is responsible for the modulation of the charge density associated with the π-electron system, and this phenomenon is particularly important when strong I··· N halogen bonds occur.
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Affiliation(s)
- Simone Melesi
- Department
of Energy, Micro and Nanostructured Materials Laboratory - NanoLab,
Energy, Politecnico di Milano, Via Ponzio 34/3, Milano 20133, Italy
| | - Pietro Marabotti
- Department
of Energy, Micro and Nanostructured Materials Laboratory - NanoLab,
Energy, Politecnico di Milano, Via Ponzio 34/3, Milano 20133, Italy
- Institut
für Physik and IRIS Adlershof, Humboldt
Universität zu Berlin, 12489 Berlin, Germany
| | - Alberto Milani
- Department
of Energy, Micro and Nanostructured Materials Laboratory - NanoLab,
Energy, Politecnico di Milano, Via Ponzio 34/3, Milano 20133, Italy
| | - Bartłomiej Pigulski
- Faculty
of Chemistry, University of Wrocław, 14 F. Joliot-Curie, Wrocław 50-383, Poland
| | - Nurbey Gulia
- Faculty
of Chemistry, University of Wrocław, 14 F. Joliot-Curie, Wrocław 50-383, Poland
| | - Piotr Pińkowski
- Faculty
of Chemistry, University of Wrocław, 14 F. Joliot-Curie, Wrocław 50-383, Poland
| | - Sławomir Szafert
- Faculty
of Chemistry, University of Wrocław, 14 F. Joliot-Curie, Wrocław 50-383, Poland
| | - Mirella Del Zoppo
- Department
of Chemistry, Materials and Chemical Engineering “Giulio Natta”, Politecnico di Milano, Piazza Leonardo da Vinci 32, Milano 20133, Italy
| | - Chiara Castiglioni
- Department
of Chemistry, Materials and Chemical Engineering “Giulio Natta”, Politecnico di Milano, Piazza Leonardo da Vinci 32, Milano 20133, Italy
| | - Carlo S. Casari
- Department
of Energy, Micro and Nanostructured Materials Laboratory - NanoLab,
Energy, Politecnico di Milano, Via Ponzio 34/3, Milano 20133, Italy
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2
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Pigulski B, Misiak K, Męcik P, Szafert S. Cycloaddition-Retro-Electrocyclization Click Reaction of Amine End-Capped Oligoynes with Tetracyanoethylene. Chemistry 2023:e202302725. [PMID: 37702289 DOI: 10.1002/chem.202302725] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2023] [Revised: 09/12/2023] [Accepted: 09/13/2023] [Indexed: 09/14/2023]
Abstract
This study shows the first example of cycloaddition-retro-electrocyclization (CA-RE) click reaction involving nitrogen end-capped push-pull oligoynes. The reported CA-RE reaction with TCNE (tetracyanoethylene) is fully regioselective and leads exclusively to the unprecedented TCBD (tetracyanobuta-1,3-diene-2,3-diyl) end-capped carbon rods. The molecular structure of the products was unambiguously confirmed using X-ray single crystal diffraction and their optical and electronic properties were investigated experimentally and rationalized using DFT (density functional theory) calculations.
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Affiliation(s)
- Bartłomiej Pigulski
- Faculty of Chemistry, University of Wrocław, F. Joliot-Curie 14, 50-383, Wrocław, Poland
| | - Klaudia Misiak
- Faculty of Chemistry, University of Wrocław, F. Joliot-Curie 14, 50-383, Wrocław, Poland
| | - Patrycja Męcik
- Faculty of Chemistry, University of Wrocław, F. Joliot-Curie 14, 50-383, Wrocław, Poland
| | - Sławomir Szafert
- Faculty of Chemistry, University of Wrocław, F. Joliot-Curie 14, 50-383, Wrocław, Poland
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3
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Abstract
The formation and study of molecules that model the sp-hybridized carbon allotrope, carbyne, is a challenging field of synthetic physical organic chemistry. The target molecules, oligo- and polyynes, are often the preferred candidates as models for carbyne because they can be formed with monodisperse lengths as well as defined structures. Despite a simple linear structure, the synthesis of polyynes is often far from straightforward, due in large part to a highly conjugated framework that can render both precursors and products highly reactive, i.e., kinetically unstable. The vast majority of polyynes are formed as symmetrical products from terminal alkynes as precursors via an oxidative, acetylenic homocoupling reaction based on the Glaser, Eglinton-Galbraith, and Hay reactions. These reactions are very efficient for the synthesis of shorter polyynes (e.g., hexaynes and octaynes), but yields often drop dramatically as a function of length for longer derivatives, usually starting with the formation of decaynes. The most effective approach to circumvent unstable precursors and products has been through the incorporation of sterically demanding end groups that serve to "protect" the polyyne skeleton. This approach was arguably identified in the early 1950s by Bohlmann and co-workers with the synthesis of tBu-end-capped polyynes. During the next 50 years, a polyyne with 14 contiguous alkyne units remained the longest isolated derivative until 2010, when the record was extended to 22 alkyne units. The record length was broken again in 2020, when a polyyne consisting of 24 alkynes was isolated and characterized. Beyond polyynes, there have been several reports describing the potential synthesis of carbyne, but conclusive characterization and proof of structure have been tenuous. The sole example of synthetic carbyne arises from synthesis within carbon nanotubes, when chains of thousands of sp carbon atoms have been linked to form polydisperse samples of carbyne. Thus, model compounds for carbyne, the polyynes, remain the best means to examine and predict the experimental structure and properties of this carbon allotrope.This Account will discuss the general synthesis of polyynes using homologous series of polyynes with up to 10 alkyne units as examples (decaynes). The limited number of specific syntheses of series with longer polyynes will then be presented and discussed in more detail based on end groups. The monodisperse polyynes produced from these synthetic efforts are then examined toward providing our best extrapolations for the expected characteristics for carbyne based on 13C NMR spectroscopy, UV-vis spectroscopy, X-ray crystallography, and Raman spectroscopy.
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Affiliation(s)
- Yueze Gao
- Department of Chemistry, University of Alberta, 11227 Saskatchewan Drive, Edmonton, Alberta T6G 2G2, Canada
| | - Rik R Tykwinski
- Department of Chemistry, University of Alberta, 11227 Saskatchewan Drive, Edmonton, Alberta T6G 2G2, Canada
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4
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Wang N, Lang Y, Wang J, Wu Z, Lu Y. Phosphine-Catalyzed Sequential [3 + 2]/[3 + 2] Annulation between Allenoates and Arylidenemalononitriles for the Enantioselective Construction of Bicyclo[3,3,0]octenes and Cyclopenta[ c]quinolinones. Org Lett 2022; 24:3712-3716. [PMID: 35584054 DOI: 10.1021/acs.orglett.2c01352] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
A highly diastereo- and enantioselective phosphine-catalyzed sequential [3 + 2]/[3 + 2] annulation of allenoates with arylidenemalononitriles has been developed. This reaction allows for the facile construction of multifunctionalized cis-fused bicyclic[3,3,0]octene scaffolds, encompassing three consecutive stereogenic centers with one quaternary carbon center, in a one-step operation from readily available materials. The reported protocol is scalable, operates under mild reaction conditions, and creates the core structural motif of a number of natural products.
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Affiliation(s)
- Nengzhong Wang
- Hubei Key Laboratory of Natural Products Research and Development, Key Laboratory of Functional Yeast (China National Light Industry), College of Biological and Pharmaceutical Sciences, China Three Gorges University, Yichang, Hubei 443002, China
| | - Yimin Lang
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543
| | - Junjie Wang
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543.,Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Bin-hai New City, Fuzhou, Fujian 350207, China
| | - Zugen Wu
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543
| | - Yixin Lu
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543.,Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Bin-hai New City, Fuzhou, Fujian 350207, China
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5
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Panikkattu VV, Sinha AS, Aakeröy CB. A family of powerful halogen-bond donors: a structural and theoretical analysis of triply activated 3-iodo-1-phenylprop-2-yn-1-ones. CrystEngComm 2022. [DOI: 10.1039/d1ce01583d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new group of powerful halogen-bond donors have been synthesized and evaluated using structural and computational tools.
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Affiliation(s)
- Vinu V. Panikkattu
- Department of Chemistry, Kansas State University, Manhattan, Kansas 66506, USA
| | - Abhijeet S. Sinha
- Department of Chemistry, Kansas State University, Manhattan, Kansas 66506, USA
| | - Christer B. Aakeröy
- Department of Chemistry, Kansas State University, Manhattan, Kansas 66506, USA
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6
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Amini H, Weisbach N, Gauthier S, Kuhn H, Bhuvanesh N, Hampel F, Reibenspies JH, Gladysz JA. Trapping of Terminal Platinapolyynes by Copper(I) Catalyzed Click Cycloadditions; Probes of Labile Intermediates in Syntheses of Complexes with Extended sp Carbon Chains, and Crystallographic Studies. Chemistry 2021; 27:12619-12634. [PMID: 34101914 DOI: 10.1002/chem.202101725] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2021] [Indexed: 11/07/2022]
Abstract
The silylated hexatriynyl complex trans-(C6 F5 )(p-tol3 P)2 Pt(C≡C)3 SiEt3 (PtC6 TES) is converted in situ to PtC6 H (wet n-Bu4 N+ F- , THF) and cross coupled with the diyne H(C≡C)2 SiEt3 (HC4 TES; CuCl/TMEDA, O2 ) to give PtC10 TES (71 %). This sequence is repeated twice to afford PtC14 TES (65 %) and then PtC18 TES (27 %). An analogous series of reactions starting with PtC8 TES gives PtC12 TES (60 %), then PtC16 TES (43 %), and then PtC20 TES (17 %). Similar cross couplings with H(C≡C)2 Si(i-Pr)3 (HC4 TIPS) give PtC12 TIPS (68 %), PtC14 TIPS (68 %), and PtC16 TIPS (34 %). The trialkylsilyl species (up to PtC18 TES) are converted to 3+2 "click" cycloadducts or 1,4-disubstituted 1,2,3-triazoles trans-(C6 F5 )(p-tol3 P)2 Pt(C≡C)n-1 C=CHN(CH2 C6 H5 )N=N (29-92 % after workups). The most general procedure involves generating the terminal polyynes PtCx H (wet n-Bu4 N+ F- , THF) in the presence of benzyl azide in DMF and aqueous CuSO4 /ascorbic acid. All of the preceding complexes are crystallographically characterized and the structural and spectroscopic properties analyzed as a function of chain length. Two pseudopolymorphs of PtC20 TES are obtained, both of which feature molecules with parallel sp carbon chains in a pairwise head/tail packing motif with extensive sp/sp van der Waals contacts.
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Affiliation(s)
- Hashem Amini
- Department of Chemistry, Texas A&M University P.O. Box 30012, College Station, Texas, 77842-3012, USA
| | - Nancy Weisbach
- Department of Chemistry, Texas A&M University P.O. Box 30012, College Station, Texas, 77842-3012, USA
| | - Sébastien Gauthier
- Department of Chemistry, Texas A&M University P.O. Box 30012, College Station, Texas, 77842-3012, USA
| | - Helene Kuhn
- Institut für Organische Chemie and Interdisciplinary Center for Molecular Materials, Friedrich-Alexander-Universität Erlangen-Nürnberg, Henkestraße 42, 91054, Erlangen, Germany
| | - Nattamai Bhuvanesh
- Department of Chemistry, Texas A&M University P.O. Box 30012, College Station, Texas, 77842-3012, USA
| | - Frank Hampel
- Institut für Organische Chemie and Interdisciplinary Center for Molecular Materials, Friedrich-Alexander-Universität Erlangen-Nürnberg, Henkestraße 42, 91054, Erlangen, Germany
| | - Joseph H Reibenspies
- Department of Chemistry, Texas A&M University P.O. Box 30012, College Station, Texas, 77842-3012, USA
| | - John A Gladysz
- Department of Chemistry, Texas A&M University P.O. Box 30012, College Station, Texas, 77842-3012, USA
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7
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Kerisit N, Ligny R, Gauthier ES, Guégan J, Toupet L, Guillemin J, Trolez Y. Synthesis and Reactivity of 5‐Bromopenta‐2,4‐diynenitrile (BrC 5N): an Access to π‐Conjugated Scaffolds. Helv Chim Acta 2019. [DOI: 10.1002/hlca.201800232] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Nicolas Kerisit
- Univ RennesEcole Nationale Supérieure de Chimie de RennesCNRSISCR – UMR6226 FR-35000 Rennes France
| | - Romain Ligny
- Univ RennesEcole Nationale Supérieure de Chimie de RennesCNRSISCR – UMR6226 FR-35000 Rennes France
| | - Etienne S. Gauthier
- Univ RennesEcole Nationale Supérieure de Chimie de RennesCNRSISCR – UMR6226 FR-35000 Rennes France
| | - Jean‐Paul Guégan
- Univ RennesEcole Nationale Supérieure de Chimie de RennesCNRSISCR – UMR6226 FR-35000 Rennes France
| | - Loïc Toupet
- Univ RennesCNRSIPR – UMR6251 FR-35000 Rennes France
| | - Jean‐Claude Guillemin
- Univ RennesEcole Nationale Supérieure de Chimie de RennesCNRSISCR – UMR6226 FR-35000 Rennes France
| | - Yann Trolez
- Univ RennesEcole Nationale Supérieure de Chimie de RennesCNRSISCR – UMR6226 FR-35000 Rennes France
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8
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Pigulski B, Gulia N, Szafert S. Reactivity of Polyynes: Complex Molecules from Simple Carbon Rods. European J Org Chem 2019. [DOI: 10.1002/ejoc.201801350] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Bartłomiej Pigulski
- Faculty of Chemistry; University of Wrocław; F. Joliot-Curie 14 50-383 Wrocław Poland
| | - Nurbey Gulia
- Faculty of Chemistry; University of Wrocław; F. Joliot-Curie 14 50-383 Wrocław Poland
| | - Sławomir Szafert
- Faculty of Chemistry; University of Wrocław; F. Joliot-Curie 14 50-383 Wrocław Poland
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9
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Radhika S, Harry NA, Neetha M, Anilkumar G. Recent trends and applications of the Cadiot–Chodkiewicz reaction. Org Biomol Chem 2019; 17:9081-9094. [DOI: 10.1039/c9ob01757g] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
The Cadiot–Chodkiewicz reaction offers an elegant strategy for the formation of 1,3-diynes via Cu-catalyzed cross-coupling of alkynyl halides with terminal alkynes in the presence of an amine.
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Affiliation(s)
- Sankaran Radhika
- School of Chemical Sciences
- Mahatma Gandhi University
- Kottayam
- India
| | - Nissy Ann Harry
- School of Chemical Sciences
- Mahatma Gandhi University
- Kottayam
- India
| | - Mohan Neetha
- School of Chemical Sciences
- Mahatma Gandhi University
- Kottayam
- India
| | - Gopinathan Anilkumar
- School of Chemical Sciences
- Mahatma Gandhi University
- Kottayam
- India
- Advanced Molecular Materials Research Centre (AMMRC)
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10
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Pigulski B, Jarszak A, Szafert S. Selective synthesis of iridium(iii) end-capped polyynes by oxidative addition of 1-iodopolyynes to Vaska's complex. Dalton Trans 2018; 47:17046-17054. [PMID: 30460964 DOI: 10.1039/c8dt04219e] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The reaction of bis(triphenylphosphine)iridium(i) carbonyl chloride (Vaska's complex) with a series of 1-iodopolyynes (1-CnI and 2-CnI) gave σ-polyynyl iridium(iii) complexes with general formula R(C[triple bond, length as m-dash]C)nIr(PPh3)2(Cl)(I)(CO). The use of acetonitrile as a solvent appeared crucial and allowed selectively obtaining only one from a few possible isomers. The X-ray single crystal diffraction experiment for 2-C4[Ir]I allowed the determination of the exact structure of this complex. Further spectroscopic measurements, especially 31P NMR, confirmed the formation of the same type of isomers with trans coordinated phosphines in each case. All complexes were fully characterized with the use of NMR (1H, 13C and 31P), IR, UV/Vis, cyclic voltammetry and (ESI)HRMS techniques. Moreover, DFT calculations were performed for all the resulting species. The complexes with a linear carbon chain from butadiyne to decapentayne are the longest iridium end-capped polyynes known to date since only compounds with a (C[triple bond, length as m-dash]C)2 structural motif have been reported so far. Moreover, we confirmed that the synthetic approach, first used for palladium(ii) end-capped polyynes, may be also applied for the synthesis of other structurally new organometallic polyynes.
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Affiliation(s)
- Bartłomiej Pigulski
- Faculty of Chemistry, University of Wrocław, 14 F. Joliot-Curie, 50-383 Wrocław, Poland.
| | - Agata Jarszak
- Faculty of Chemistry, University of Wrocław, 14 F. Joliot-Curie, 50-383 Wrocław, Poland.
| | - Sławomir Szafert
- Faculty of Chemistry, University of Wrocław, 14 F. Joliot-Curie, 50-383 Wrocław, Poland.
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11
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Haque A, Al-Balushi RA, Al-Busaidi IJ, Khan MS, Raithby PR. Rise of Conjugated Poly-ynes and Poly(Metalla-ynes): From Design Through Synthesis to Structure-Property Relationships and Applications. Chem Rev 2018; 118:8474-8597. [PMID: 30112905 DOI: 10.1021/acs.chemrev.8b00022] [Citation(s) in RCA: 109] [Impact Index Per Article: 18.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Conjugated poly-ynes and poly(metalla-ynes) constitute an important class of new materials with potential application in various domains of science. The key factors responsible for the diverse usage of these materials is their intriguing and tunable chemical and photophysical properties. This review highlights fascinating advances made in the field of conjugated organic poly-ynes and poly(metalla-ynes) incorporating group 4-11 metals. This includes several important aspects of conjugated poly-ynes viz. synthetic protocols, bonding, electronic structure, nature of luminescence, structure-property relationships, diverse applications, and concluding remarks. Furthermore, we delineated the future directions and challenges in this particular area of research.
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Affiliation(s)
- Ashanul Haque
- Department of Chemistry , Sultan Qaboos University , P.O. Box 36, Al-Khod 123 , Sultanate of Oman
| | - Rayya A Al-Balushi
- Department of Chemistry , Sultan Qaboos University , P.O. Box 36, Al-Khod 123 , Sultanate of Oman
| | - Idris Juma Al-Busaidi
- Department of Chemistry , Sultan Qaboos University , P.O. Box 36, Al-Khod 123 , Sultanate of Oman
| | - Muhammad S Khan
- Department of Chemistry , Sultan Qaboos University , P.O. Box 36, Al-Khod 123 , Sultanate of Oman
| | - Paul R Raithby
- Department of Chemistry , University of Bath , Claverton Down , Bath BA2 7AY , U.K
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12
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Pigulski B, Męcik P, Cichos J, Szafert S. Use of Stable Amine-Capped Polyynes in the Regioselective Synthesis of Push–Pull Thiophenes. J Org Chem 2017; 82:1487-1498. [DOI: 10.1021/acs.joc.6b02685] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Bartłomiej Pigulski
- Department of Chemistry, University of Wrocław, 14 F. Joliot-Curie, 50-383 Wrocław, Poland
| | - Patrycja Męcik
- Department of Chemistry, University of Wrocław, 14 F. Joliot-Curie, 50-383 Wrocław, Poland
| | - Jakub Cichos
- Department of Chemistry, University of Wrocław, 14 F. Joliot-Curie, 50-383 Wrocław, Poland
| | - Sławomir Szafert
- Department of Chemistry, University of Wrocław, 14 F. Joliot-Curie, 50-383 Wrocław, Poland
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13
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Natoli SN, Azbell TJ, Fanwick PE, Zeller M, Ren T. A Synthetic Approach to Cross-Conjugated Organometallic Complexes Based on geminal-Diethynylethene and CoIII(cyclam). Organometallics 2016. [DOI: 10.1021/acs.organomet.6b00657] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sean N. Natoli
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Tyler J. Azbell
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Phillip E. Fanwick
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Matthias Zeller
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Tong Ren
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
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14
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Pigulski B, Arendt A, Tomilin DN, Sobenina LN, Trofimov BA, Szafert S. Transition-Metal Free Mechanochemical Approach to Polyyne Substituted Pyrroles. J Org Chem 2016; 81:9188-9198. [PMID: 27561913 DOI: 10.1021/acs.joc.6b01732] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
In this contribution, the synthesis of long chain hexatriynyl- and octatetraynyl-substituted pyrroles in one step from 1-halopolyyne precursors is reported. The products were obtained via a mechanochemical approach by simple grinding of 1-haloalkynes with N-substituted pyrroles and potassium carbonate which played a role of heterogeneous catalyst and this solvent- and transition metal-free approach is unprecedent in the synthesis of new, organic, long chain polyynes. Additionally, an extensive X-ray single crystal study of pyrrole end-capped polyynes is presented. Such compounds are possible substrates for different oligoheterocycles and have a significant application potential such as for instance molecular wires.
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Affiliation(s)
- Bartłomiej Pigulski
- Department of Chemistry, University of Wrocław , 14 F. Joliot-Curie, 50-383 Wrocław, Poland
| | - Agata Arendt
- Department of Chemistry, University of Wrocław , 14 F. Joliot-Curie, 50-383 Wrocław, Poland
| | - Denis N Tomilin
- A. E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch, Russian Academy of Sciences , 1 Favorsky, 664033 Irkutsk, Russian Federation
| | - Lyubov N Sobenina
- A. E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch, Russian Academy of Sciences , 1 Favorsky, 664033 Irkutsk, Russian Federation
| | - Boris A Trofimov
- A. E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch, Russian Academy of Sciences , 1 Favorsky, 664033 Irkutsk, Russian Federation
| | - Sławomir Szafert
- Department of Chemistry, University of Wrocław , 14 F. Joliot-Curie, 50-383 Wrocław, Poland
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15
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Cook TD, Natoli SN, Fanwick PE, Ren T. CoIII(cyclam) Oligoynyls: Monomeric Oligoynyl Complexes and Dimeric Complexes with an Oligoyn-diyl Bridge. Organometallics 2016. [DOI: 10.1021/acs.organomet.6b00219] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Timothy D. Cook
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Sean N. Natoli
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Phillip E. Fanwick
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Tong Ren
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
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