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Fukamizo S, Ikeda H, Tsurumaki E, Toyota S. An Alternative Synthesis of Tribenzodecacyclenes and Experimental Barrier to Propeller Inversion. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2022. [DOI: 10.1246/bcsj.20220015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- Shun Fukamizo
- Department of Chemistry, School of Science, Tokyo Institute of Technology, 2–12–1 Ookayama, Meguro-ku, Tokyo 152-8551, Japan
| | - Hiroshi Ikeda
- Department of Chemistry, School of Science, Tokyo Institute of Technology, 2–12–1 Ookayama, Meguro-ku, Tokyo 152-8551, Japan
- Tokyo Metropolitan College of Industrial Technology, 1-10-40 Higashi-Oi, Shinagawa-ku, Tokyo 140-0011, Japan
| | - Eiji Tsurumaki
- Department of Chemistry, School of Science, Tokyo Institute of Technology, 2–12–1 Ookayama, Meguro-ku, Tokyo 152-8551, Japan
| | - Shinji Toyota
- Department of Chemistry, School of Science, Tokyo Institute of Technology, 2–12–1 Ookayama, Meguro-ku, Tokyo 152-8551, Japan
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Katayama K, Matsuura Y, Kitamura C, Nishida JI, Kawase T. 2‐Aryl‐1H‐benz[de]isoquinolinium ions: Cationic Dyes Displaying Mechanochromism and Crystallochromism. CHEMPHOTOCHEM 2022. [DOI: 10.1002/cptc.202200013] [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]
Affiliation(s)
- Koji Katayama
- University of Hyogo: Hyogo Kenritsu Daigaku Graduate School of Engineering 2167Shosha 671-2280 Himeji JAPAN
| | - Yuuka Matsuura
- University of Hyogo: Hyogo Kenritsu Daigaku Graduate School of Engineering 2167Shosha 671-2280 Himeji JAPAN
| | - Chitoshi Kitamura
- The University of Shiga Prefecture: Shiga Kenritsu Daigaku School of Engineering 2500Hassaka-cho 522-8533 Hikone JAPAN
| | - Jun-ichi Nishida
- University of Hyogo: Hyogo Kenritsu Daigaku Graduate School of Engineering 2167Shosha 671-2280 Himeji JAPAN
| | - Takeshi Kawase
- Hyogo University Materials Science and Chemistry Shosha 2167 671-2201 Himeji JAPAN
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Abstract
AbstractAlthough azomethine ylides have been fully exploited as versatile reactive intermediates in dipolar cycloaddition reactions to construct a variety of heterocyclic compounds involving a nitrogen atom, little is known about their structural and electronic properties. Here a method is developed for the preparation, isolation and characterization of a stable 2-azaphenalenyl based azomethine ylide. N-Phenyl-5,8-di-t-butyl-2-azaphenalenyl cannot be isolated because it undergoes rapid dimerization by C–C bond formation at the 1 and 3 positions. In contrast, sterically bulkier N-2,6-di(isopropyl)phenyl-5,8-di-t-butyl-2-azaphenalenyl can be generated and isolated as deep green crystals under deoxygenated conditions. X-ray crystal analysis of this stable azomethine ylide reveals that its azaphenalenyl skeleton has very small bond alternation and structural deformation. The results of spectroscopic and electrochemical theoretical studies indicate that N-2,6-di(isopropyl)phenyl-5,8-di-t-butyl-2-azaphenalenyl has electronic features that are similar to those of phenalenyl anion and it possesses an extremely high HOMO energy.
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Katayama K, Kawajiri I, Okano Y, Nishida J, Kawase T. Highly Polarized Benzo[
k
]fluoranthene Imide Derivatives: Large Solvatofluorochromism, Dual Fluorescence and Aggregation Induced Emission Associated with Excited‐State Intramolecular Charge Transfer. Chempluschem 2019; 84:722-729. [DOI: 10.1002/cplu.201900067] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Revised: 03/07/2019] [Indexed: 12/12/2022]
Affiliation(s)
- Kohji Katayama
- Graduate School of EngineeringUniversity of Hyogo 2167 Shosha, Himeji Hyogo 671-2280 Japan
| | - Ikumi Kawajiri
- Graduate School of EngineeringUniversity of Hyogo 2167 Shosha, Himeji Hyogo 671-2280 Japan
| | - Yotaro Okano
- Graduate School of EngineeringUniversity of Hyogo 2167 Shosha, Himeji Hyogo 671-2280 Japan
| | - Jun‐ichi Nishida
- Graduate School of EngineeringUniversity of Hyogo 2167 Shosha, Himeji Hyogo 671-2280 Japan
| | - Takeshi Kawase
- Graduate School of EngineeringUniversity of Hyogo 2167 Shosha, Himeji Hyogo 671-2280 Japan
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Ishikawa H, Katayama K, Nishida JI, Kitamura C, Kawase T. Fluoranthene and its π-extended diimides: Construction of new electron acceptors. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.09.012] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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