|
1
|
Weber JA, Clennan E, Arulsamy N. A Computational Physical Organic Study of a Torque, Lock, and Propagate Approach and Validation with the Synthesis of Configurationally Stable First‐Generation Heli‐Twisted Acenes. European J Org Chem 2022. [DOI: 10.1002/ejoc.202101533] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
| | - Edward Clennan
- University of Wyoming Dept. of Chemistry Room 403 Physical Building . 82071-3838 Laramie UNITED STATES
| | | |
Collapse
|
|
2
|
Yamada S, Kinoshita K, Iwama S, Yamazaki T, Kubota T, Yajima T, Yamamoto K, Tahara S. Synthesis of perfluoroalkylated pentacenes and evaluation of their fundamental physical properties. Org Biomol Chem 2018; 15:2522-2535. [PMID: 28256673 DOI: 10.1039/c7ob00043j] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Symmetrical and unsymmetrical pentacenes carrying two perfluoroalkyl (Rf) chains, at the 6 and 13 positions, were synthesized from easily available pentacene-6,13-quinone via facile three or four step reactions. After extensive evaluation, it was clearly found that the control of both the electron density of the aromatic rings on the pentacene core and molecular alignment in the crystalline state nicely affected their physical properties. Thus, we successfully prove in this article that (1) their anti-oxidation ability was significantly enhanced due to a decrease in the HOMO and LUMO energy and (2) a distinct difference in charge-transporting properties was observed between the symmetrical and unsymmetrical pentacenes.
Collapse
Affiliation(s)
- Shigeyuki Yamada
- Department of Applied Chemistry, Graduate School of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakamachi, Koganei 184-8588, Japan.
| | - Keita Kinoshita
- Department of Applied Chemistry, Graduate School of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakamachi, Koganei 184-8588, Japan.
| | - Shota Iwama
- Department of Applied Chemistry, Graduate School of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakamachi, Koganei 184-8588, Japan.
| | - Takashi Yamazaki
- Department of Applied Chemistry, Graduate School of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakamachi, Koganei 184-8588, Japan.
| | - Toshio Kubota
- Department of Biomolecular Functional Engineering, Ibaraki University, Nakanarusawa 4-12-1, Hitachi 316-8511, Japan
| | - Tomoko Yajima
- Department of Chemistry, Faculty of Science, Ochanomizu University, Otsuka, Bunkyo-ku, Tokyo 112-8610, Japan
| | - Kyoko Yamamoto
- Research Center, Asahi Glass Co., Ltd., Hazawa-cho, Kanagawa-ku, Yokohama-shi, Kanagawa 221-8775, Japan
| | - Shinya Tahara
- Research Center, Asahi Glass Co., Ltd., Hazawa-cho, Kanagawa-ku, Yokohama-shi, Kanagawa 221-8775, Japan
| |
Collapse
|
|
3
|
Paraja M, Barroso R, Cabal MP, Valdés C. Synthesis of Highly Substituted Polyenes by Palladium-Catalyzed Cross-Couplings of Sterically Encumbered Alkenyl Bromides andN-Tosylhydrazones. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201601155] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Miguel Paraja
- Departamento de Química Orgánica e Inorgánica; Instituto Universitario de Química Organometálica “Enrique Moles”; Universidad de Oviedo; c/ Julián Clavería 8 33006 Oviedo Spain
| | - Raquel Barroso
- Departamento de Química Orgánica e Inorgánica; Instituto Universitario de Química Organometálica “Enrique Moles”; Universidad de Oviedo; c/ Julián Clavería 8 33006 Oviedo Spain
| | - M. Paz Cabal
- Departamento de Química Orgánica e Inorgánica; Instituto Universitario de Química Organometálica “Enrique Moles”; Universidad de Oviedo; c/ Julián Clavería 8 33006 Oviedo Spain
| | - Carlos Valdés
- Departamento de Química Orgánica e Inorgánica; Instituto Universitario de Química Organometálica “Enrique Moles”; Universidad de Oviedo; c/ Julián Clavería 8 33006 Oviedo Spain
| |
Collapse
|
|
4
|
Lin WB, Li M, Fang L, Shen Y, Chen CF. Synthesis, Structures, Resolution, and Chiroptical Properties of 1,16-Diaryl-Substituted Benzo[5]helicene Derivatives. Chem Asian J 2016; 12:86-94. [PMID: 27735134 DOI: 10.1002/asia.201601305] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2016] [Indexed: 11/10/2022]
Abstract
An efficient route to the synthesis of benzo[5]helicene derivatives functionalized on the interior side of the helix was developed, and resulted in a series of 1,16-diaryl-substituted benzo[5]helicene derivatives starting from easily available 7-methoxytetralone. X-ray crystal structures showed that the benzo[5]helicene derivatives had highly helical, twisted structures, and could all create hierarchical packing architectures with alternating P and M layers in the solid state. Moreover, seven pairs of enantiomers based on 1,16-diaryl-substituted benzo[5]helicene derivatives were also obtained by efficient resolution through HPLC with semipreparative chiral columns. The enantiomers all showed clear mirror-image circular dichroism (CD) spectra and high specific optical rotations, and their absolute configurations were determined by X-ray crystallography. Interestingly, a helical nanotubular structure was formed by the self-assembly of one enantiomer through halogen bonding. Furthermore, the enantiomers were found to have high racemization barriers and thermostability, which might be caused by the introduction of aryl substituents at the C1(C16) position.
Collapse
Affiliation(s)
- Wei-Bin Lin
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P.R. China.,University of Chinese Academy of Sciences, Beijing, 100049, P.R. China
| | - Meng Li
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P.R. China
| | - Lei Fang
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P.R. China.,University of Chinese Academy of Sciences, Beijing, 100049, P.R. China
| | - Yun Shen
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P.R. China
| | - Chuan-Feng Chen
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P.R. China.,University of Chinese Academy of Sciences, Beijing, 100049, P.R. China
| |
Collapse
|