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Zhang Y, Pun SH, Miao Q. The Scholl Reaction as a Powerful Tool for Synthesis of Curved Polycyclic Aromatics. Chem Rev 2022; 122:14554-14593. [PMID: 35960873 DOI: 10.1021/acs.chemrev.2c00186] [Citation(s) in RCA: 58] [Impact Index Per Article: 29.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
The past decade has witnessed remarkable success in the synthesis of curved polycyclic aromatics through Scholl reactions which enable oxidative aryl-aryl coupling even in company with the introduction of significant steric strain. These curved polycyclic aromatics are not only unique objects of structural organic chemistry in relation to the nature of aromaticity but also play an important role in bottom-up approaches to precise synthesis of nanocarbons of unique topology. Moreover, they have received considerable attention in the fields of supramolecular chemistry and organic functional materials because of their interesting properties and promising applications. Despite the great success of Scholl reactions in synthesis of curved polycyclic aromatics, the outcome of a newly designed substrate in the Scholl reaction still cannot be predicted in a generic and precise manner largely due to limited understanding on the reaction mechanism and possible rearrangement processes. This review provides an overview of Scholl reactions with a focus on their applications in synthesis of curved polycyclic aromatics with interesting structures and properties and aims to shed light on the key factors that affect Scholl reactions in synthesizing sterically strained polycyclic aromatics.
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Affiliation(s)
- Yiqun Zhang
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China
| | - Sai Ho Pun
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China
| | - Qian Miao
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China
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3
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Regiodivergent Synthesis and π‐Stacking‐Induced Chiral Self‐Recognition of Hexabenzocoronene‐Based [6]Helicenes. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200690] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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4
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Chen Y, Zhou R, Liu X, Yang C, Wang T, Shi F, Zhang L. π-Expanded triple [5]helicenes bearing dibenzocoronene monoimide subunits. Chem Commun (Camb) 2022; 58:4671-4674. [PMID: 35319555 DOI: 10.1039/d2cc00957a] [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
Two novel π-expanded triple [5]helicenes containing three dibenzocoronene monoimide subunits have been synthesized and characterized. The helicenes exhibit low-energy conformational interconversions, as supported by NMR spectra. The single-crystal X-ray analysis reveals a C1 conformation in the solid state. Furthermore, the helicenes exhibit ambipolar transport characteristics in thin film transistors.
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Affiliation(s)
- Yan Chen
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, P. R. China.
| | - Ruihu Zhou
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, P. R. China.
| | - Xinyue Liu
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, P. R. China.
| | - Cao Yang
- School of Materials Science and Engineering, The Key Laboratory of Material Processing and Mold of Ministry of Education, Henan Key Laboratory of Advanced Nylon Materials and Application, Zhengzhou University, Zhengzhou 450001, P. R. China.
| | - Tingting Wang
- AVIC Manufacturing Technology Institute Composite Technology Center, Beijing 101300, P. R. China
| | - Fenghui Shi
- AVIC Manufacturing Technology Institute Composite Technology Center, Beijing 101300, P. R. China
| | - Lei Zhang
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, P. R. China.
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Reger D, Haines P, Amsharov KY, Schmidt JA, Ullrich T, Bönisch S, Hampel F, Görling A, Nelson J, Jelfs KE, Guldi DM, Jux N. A Family of Superhelicenes: Easily Tunable, Chiral Nanographenes by Merging Helicity with Planar π Systems. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202103253] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- David Reger
- Department of Chemistry and Pharmacy & Interdisciplinary Center for Molecular Materials (ICMM) Friedrich-Alexander-University Erlangen-Nuremberg Nikolaus-Fiebiger-Straße 10 91058 Erlangen Germany
| | - Philipp Haines
- Department of Chemistry and Pharmacy & Interdisciplinary Center for Molecular Materials (ICMM) Friedrich-Alexander-University Erlangen-Nuremberg Egerlandstraße 3 91058 Erlangen Germany
| | - Konstantin Y. Amsharov
- Institute for Organic Chemistry Martin Luther University Halle-Wittenberg Kurt-Mothes-Straße 2 06120 Halle Germany
| | - Julia A. Schmidt
- Department of Chemistry Molecular Sciences Research Hub Imperial College London White City Campus, Wood Lane London W12 0BZ UK
| | - Tobias Ullrich
- Department of Chemistry and Pharmacy & Interdisciplinary Center for Molecular Materials (ICMM) Friedrich-Alexander-University Erlangen-Nuremberg Egerlandstraße 3 91058 Erlangen Germany
| | - Simon Bönisch
- Department of Chemistry and Pharmacy & Interdisciplinary Center for Molecular Materials (ICMM) Friedrich-Alexander-University Erlangen-Nuremberg Egerlandstraße 3 91058 Erlangen Germany
| | - Frank Hampel
- Department of Chemistry and Pharmacy & Interdisciplinary Center for Molecular Materials (ICMM) Friedrich-Alexander-University Erlangen-Nuremberg Nikolaus-Fiebiger-Straße 10 91058 Erlangen Germany
| | - Andreas Görling
- Department of Chemistry and Pharmacy & Interdisciplinary Center for Molecular Materials (ICMM) Friedrich-Alexander-University Erlangen-Nuremberg Egerlandstraße 3 91058 Erlangen Germany
| | - Jenny Nelson
- Department of Physics Imperial College London South Kensington Campus London SW7 2AZ UK
| | - Kim E. Jelfs
- Department of Chemistry Molecular Sciences Research Hub Imperial College London White City Campus, Wood Lane London W12 0BZ UK
| | - Dirk M. Guldi
- Department of Chemistry and Pharmacy & Interdisciplinary Center for Molecular Materials (ICMM) Friedrich-Alexander-University Erlangen-Nuremberg Egerlandstraße 3 91058 Erlangen Germany
| | - Norbert Jux
- Department of Chemistry and Pharmacy & Interdisciplinary Center for Molecular Materials (ICMM) Friedrich-Alexander-University Erlangen-Nuremberg Nikolaus-Fiebiger-Straße 10 91058 Erlangen Germany
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Reger D, Haines P, Amsharov KY, Schmidt JA, Ullrich T, Bönisch S, Hampel F, Görling A, Nelson J, Jelfs KE, Guldi DM, Jux N. A Family of Superhelicenes: Easily Tunable, Chiral Nanographenes by Merging Helicity with Planar π Systems. Angew Chem Int Ed Engl 2021; 60:18073-18081. [PMID: 34014601 PMCID: PMC8456895 DOI: 10.1002/anie.202103253] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2021] [Revised: 04/22/2021] [Indexed: 01/01/2023]
Abstract
We designed a straightforward synthetic route towards a full-fledged family of π-extended helicenes: superhelicenes. They have two hexa-peri-hexabenzocoronenes (HBCs) in common that are connected via a central five-membered ring. By means of structurally altering this 5-membered ring, we realized a versatile library of molecular building blocks. Not only the superhelicene structure, but also their features are tuned with ease. In-depth physico-chemical characterizations served as a proof of concept thereof. The superhelicene enantiomers were separated, their circular dichroism was measured in preliminary studies and concluded with an enantiomeric assignment. Our work was rounded-off by crystal structure analyses. Mixed stacks of M- and P-isomers led to twisted molecular wires. Using such stacks, charge-carrier mobilities were calculated, giving reason to expect outstanding hole transporting properties.
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Affiliation(s)
- David Reger
- Department of Chemistry and Pharmacy & Interdisciplinary Center for Molecular Materials (ICMM)Friedrich-Alexander-University Erlangen-NurembergNikolaus-Fiebiger-Straße 1091058ErlangenGermany
| | - Philipp Haines
- Department of Chemistry and Pharmacy & Interdisciplinary Center for Molecular Materials (ICMM)Friedrich-Alexander-University Erlangen-NurembergEgerlandstraße 391058ErlangenGermany
| | - Konstantin Y. Amsharov
- Institute for Organic ChemistryMartin Luther University Halle-WittenbergKurt-Mothes-Straße 206120HalleGermany
| | - Julia A. Schmidt
- Department of ChemistryMolecular Sciences Research HubImperial College LondonWhite City Campus, Wood LaneLondonW12 0BZUK
| | - Tobias Ullrich
- Department of Chemistry and Pharmacy & Interdisciplinary Center for Molecular Materials (ICMM)Friedrich-Alexander-University Erlangen-NurembergEgerlandstraße 391058ErlangenGermany
| | - Simon Bönisch
- Department of Chemistry and Pharmacy & Interdisciplinary Center for Molecular Materials (ICMM)Friedrich-Alexander-University Erlangen-NurembergEgerlandstraße 391058ErlangenGermany
| | - Frank Hampel
- Department of Chemistry and Pharmacy & Interdisciplinary Center for Molecular Materials (ICMM)Friedrich-Alexander-University Erlangen-NurembergNikolaus-Fiebiger-Straße 1091058ErlangenGermany
| | - Andreas Görling
- Department of Chemistry and Pharmacy & Interdisciplinary Center for Molecular Materials (ICMM)Friedrich-Alexander-University Erlangen-NurembergEgerlandstraße 391058ErlangenGermany
| | - Jenny Nelson
- Department of PhysicsImperial College LondonSouth Kensington CampusLondonSW7 2AZUK
| | - Kim E. Jelfs
- Department of ChemistryMolecular Sciences Research HubImperial College LondonWhite City Campus, Wood LaneLondonW12 0BZUK
| | - Dirk M. Guldi
- Department of Chemistry and Pharmacy & Interdisciplinary Center for Molecular Materials (ICMM)Friedrich-Alexander-University Erlangen-NurembergEgerlandstraße 391058ErlangenGermany
| | - Norbert Jux
- Department of Chemistry and Pharmacy & Interdisciplinary Center for Molecular Materials (ICMM)Friedrich-Alexander-University Erlangen-NurembergNikolaus-Fiebiger-Straße 1091058ErlangenGermany
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Dusold C, Haines P, Platzer B, Guldi DM, Hirsch A. Helically and Linearly Fused Rylenediimide-Hexabenzocoronenes. Chemistry 2021; 27:6511-6521. [PMID: 33492668 PMCID: PMC8252035 DOI: 10.1002/chem.202005235] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Indexed: 12/30/2022]
Abstract
Perylene- as well as naphthalenediimides were fused to hexabenzocoronenes (HBCs) at their imide position to realize highly π-extended donor-acceptor (D-A)-hybrids. Successful isomer separation in the first step was decisive to guarantee a straightforward synthetic sequence. Hexaphenylbenzenes as precursors were accessed via Diels-Alder reactions and reacted in a Scholl oxidation to yield the respective HBC derivatives. The fully conjugated benzimidazole linker, which separates the electron donating HBC from the electron accepting rylenediimide, enabled the formation of either a linear or a helical configuration. Largely different chemical, physical, and optoelectrical characteristics were noted for the two configurations. What stood out was their aggregation and their excited state deactivation depending on the solvent polarity. Results from global analysis of the femtosecond transient absorption data corroborated the formation of a charge-transfer (CT) state that is stabilized in the helically fused configuration relative to the linear analogue. However, a comparison with spectroelectrochemical experiments failed to disclose evidence for a charge-separated (CS) state.
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Affiliation(s)
- Carolin Dusold
- Department of Chemistry and Pharmacy, Friedrich-Alexander-University Erlangen-Nuremberg, Nikolaus-Fiebiger-Straße 10, 91058, Erlangen, Germany
| | - Philipp Haines
- Department of Chemistry and Pharmacy, Friedrich-Alexander-University Erlangen-Nuremberg, Egerlandstrasse 3, 91058, Erlangen, Germany
| | - Benedikt Platzer
- Department of Chemistry and Pharmacy, Friedrich-Alexander-University Erlangen-Nuremberg, Egerlandstrasse 3, 91058, Erlangen, Germany
| | - Dirk M Guldi
- Department of Chemistry and Pharmacy, Friedrich-Alexander-University Erlangen-Nuremberg, Egerlandstrasse 3, 91058, Erlangen, Germany
| | - Andreas Hirsch
- Department of Chemistry and Pharmacy, Friedrich-Alexander-University Erlangen-Nuremberg, Nikolaus-Fiebiger-Straße 10, 91058, Erlangen, Germany
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Qiu Z, Ju CW, Frédéric L, Hu Y, Schollmeyer D, Pieters G, Müllen K, Narita A. Amplification of Dissymmetry Factors in π-Extended [7]- and [9]Helicenes. J Am Chem Soc 2021; 143:4661-4667. [PMID: 33735570 PMCID: PMC8041289 DOI: 10.1021/jacs.0c13197] [Citation(s) in RCA: 89] [Impact Index Per Article: 29.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
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π-Extended
helicenes constitute an important class of polycyclic
aromatic hydrocarbons with intrinsic chirality. Herein, we report
the syntheses of π-extended [7]helicene 4 and π-extended
[9]helicene 6 through regioselective cyclodehydrogenation
in high yields, where a “prefusion” strategy plays a
key role in preventing undesirable aryl rearrangements. The unique
helical structures are unambiguously confirmed by X-ray crystal structure
analysis. Compared to the parent pristine [7]helicene and [9]helicene,
these novel π-extended helicenes display significantly improved
photophysical properties, with a quantum yield of 0.41 for 6. After optical resolution by chiral high-performance liquid chromatography,
the chiroptical properties of enantiomers 4-P/M and 6-P/M are investigated, revealing that the small variation in
helical length from [7] to [9] can cause an approximately 10-fold
increase in the dissymmetry factors. The circularly polarized luminescence
brightness of 6 reaches 12.6 M–1 cm–1 as one of the highest among carbohelicenes.
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Affiliation(s)
- Zijie Qiu
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - Cheng-Wei Ju
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - Lucas Frédéric
- Université Paris-Saclay, CEA, INRAE, Département Médicaments et Technologies pour la Santé (DMTS), SCBM, F-91191, Gif-sur-Yvette, France
| | - Yunbin Hu
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany.,Department of Organic and Polymer Chemistry, College of Chemistry and Chemical Engineering, Central South University, Changsha, Hunan 410083, People's Republic of China
| | - Dieter Schollmeyer
- Institute of Organic Chemistry, Johannes Gutenberg-University Mainz, Duesbergweg 10-14, 55099 Mainz, Germany
| | - Grégory Pieters
- Université Paris-Saclay, CEA, INRAE, Département Médicaments et Technologies pour la Santé (DMTS), SCBM, F-91191, Gif-sur-Yvette, France
| | - Klaus Müllen
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany.,Department of Chemistry, University of Cologne, Greinstr. 4-6, 50939 Cologne, Germany
| | - Akimitsu Narita
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany.,Organic and Carbon Nanomaterials Unit, Okinawa Institute of Science and Technology Graduate University, 1919-1 Tancha, Onna-son, Kunigami-gun, Okinawa 904-0495, Japan
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Dusold C, Weiss C, Hampel F, Hirsch A. Synthesis and crystal packing of perylene-derivatives with extreme sterically demanding pentaphenylbenzene bay-substituents. Chem Commun (Camb) 2021; 57:583-586. [PMID: 33475636 DOI: 10.1039/d0cc07773a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An unprecedented library of single and double bay-substituted perylene-pentaphenylbenzenes (PPBs) is presented. An extreme core-distortion as well as successful elimination of aggregation interactions of perylenes was confirmed by X-ray analysis. The isomerically pure perylene-PPB hybrids show remarkable differences in their photophysical properties with respect to their regiochemistry as well as different peri-functionalization.
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Affiliation(s)
- Carolin Dusold
- Department of Chemistry and Pharmacy, Friedrich-Alexander University Erlangen-Nuremberg, Nikolaus-Fiebiger-Straße 10, Erlangen 91058, Germany.
| | - Corinna Weiss
- Department of Chemistry and Pharmacy, Friedrich-Alexander University Erlangen-Nuremberg, Nikolaus-Fiebiger-Straße 10, Erlangen 91058, Germany.
| | - Frank Hampel
- Department of Chemistry and Pharmacy, Friedrich-Alexander University Erlangen-Nuremberg, Nikolaus-Fiebiger-Straße 10, Erlangen 91058, Germany.
| | - Andreas Hirsch
- Department of Chemistry and Pharmacy, Friedrich-Alexander University Erlangen-Nuremberg, Nikolaus-Fiebiger-Straße 10, Erlangen 91058, Germany.
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Dusold C, Platzer B, Haines P, Reger D, Jux N, Guldi DM, Hirsch A. A Functional Hexaphenylbenzene Library Comprising of One, Three, and Six Peripheral Rylene-Diimide Substituents. Chemistry 2021; 27:1670-1679. [PMID: 33140885 PMCID: PMC7898621 DOI: 10.1002/chem.202004273] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2020] [Revised: 10/30/2020] [Indexed: 11/07/2022]
Abstract
Synthesis and characterization of a series of rylene-diimide substituted hexaphenylbenzenes (HPBs) is presented. The direct connection of the rylene-diimide units to the HPBs via the imide-N-position without any linkers as well as the use of naphthalene-diimides (NDIs) next to perylene-diimides (PDIs) is unprecedented. While mono-substituted products were obtained by imidization reactions with amino-HPB and the respective rylene-monoimides, key step for the formation of tri- and hexa-substituted HPBs is the Co-catalysed cyclotrimerization. Particular emphasis for physic-chemical characterization was on to the number of NDIs/PDIs per HPB and the overall substitution patterns. Lastly, Scholl oxidation conditions were applied to all HPB systems to generate the corresponding hexa-peri-hexabenzocoronenes (HBCs). Importantly, the efficiency of the transformation strongly depends on the number of NDIs/PDIs. While three rylene-diimide units already hinder the Scholl reaction, the successful synthesis of mono-substituted HBCs is possible.
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Affiliation(s)
- Carolin Dusold
- Department of Chemistry and PharmacyFriedrich-Alexander-University Erlangen-NurembergNikolaus-Fiebiger-Straße 1091058ErlangenGermany
| | - Benedikt Platzer
- Department of Chemistry and PharmacyFriedrich-Alexander-University Erlangen-NurembergEgerlandstraße 391058ErlangenGermany
| | - Philipp Haines
- Department of Chemistry and PharmacyFriedrich-Alexander-University Erlangen-NurembergEgerlandstraße 391058ErlangenGermany
| | - David Reger
- Department of Chemistry and PharmacyFriedrich-Alexander-University Erlangen-NurembergNikolaus-Fiebiger-Straße 1091058ErlangenGermany
| | - Norbert Jux
- Department of Chemistry and PharmacyFriedrich-Alexander-University Erlangen-NurembergNikolaus-Fiebiger-Straße 1091058ErlangenGermany
| | - Dirk. M. Guldi
- Department of Chemistry and PharmacyFriedrich-Alexander-University Erlangen-NurembergEgerlandstraße 391058ErlangenGermany
| | - Andreas Hirsch
- Department of Chemistry and PharmacyFriedrich-Alexander-University Erlangen-NurembergNikolaus-Fiebiger-Straße 1091058ErlangenGermany
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Chen XY, Li JK, Wang XY. Recent Advances in the Syntheses of Helicene-Based Molecular Nanocarbons via the Scholl Reaction. CHINESE J ORG CHEM 2021. [DOI: 10.6023/cjoc202107063] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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