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Shoji T, Ito S. Azulene-Based Donor-Acceptor Systems: Synthesis, Optical, and Electrochemical Properties. Chemistry 2017; 23:16696-16709. [DOI: 10.1002/chem.201702806] [Citation(s) in RCA: 61] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2017] [Indexed: 12/26/2022]
Affiliation(s)
- Taku Shoji
- Department of Material Science; Graduate School of Science and Technology; Shinshu University, Matsumoto; 390-8621 Nagano Japan
| | - Shunji Ito
- Graduate School of Science and Technology; Hirosaki University, Hirosaki; 036-8561 Aomori Japan
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2
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Ishikawa H, Nishida JI, Jones JW, Scott LT, Kawase T. Bicyclo[6.3.0]undeca-1(11),2,4,6,8-pentaen-10-ylidene: An Aromatic Carbene with Ambiphilic Properties. Chempluschem 2017; 82:1073-1077. [PMID: 31961604 DOI: 10.1002/cplu.201700069] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2017] [Indexed: 11/07/2022]
Abstract
The title carbene (4) was generated as a highly reactive species in solution by photoirradiation of 10-diazobicyclo[6.3.0]undecapentaene (5) using a high-pressure mercury lamp. Carbene 4 reacts with benzene to afford two isomeric adducts, 10-phenylbicyclo[6.3.0]undecapentaene (10) and tricyclo[9.3.03, 10 .0]heptadeca-1,3(10),4,6,8,12,14,16-octaene (11). The reactivity toward benzene is a characteristic of an electrophilic aromatic carbene analogous to cyclopentadienylidene 1. In contrast, the reaction of 4 with methanol produces 7-methoxybicyclo[6.3.0]undeca-1,3,5,8,10-pentaene (15). When [D1 ]methanol was employed as a reactant, the 10-deuterated analogue was formed. The results clearly indicate the formation of bicyclo[6.3.0]undecapentaenyl cation (7) as a novel 10 π-electronic compound by protonation of 4. Theoretical calculations indicate that the 2- and 7-positions of the cation have the largest positive charge in the cation. Moreover, the carbene was generated in the presence of tert-butyl hydroperoxide in aqueous tetrahydrofuran to afford azulene through oxidation of 7, followed by decarbonylation. The nucleophilic property of carbene 3 is similar to that of cycloheptatrienylidene 2. Thus, 4 can be regarded as a novel ambiphilic aromatic carbene.
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Affiliation(s)
- Hiroyuki Ishikawa
- Graduate School of Engineering, University of Hyogo, 2167 Shosha, Himeji, Hyogo, 671-2280, Japan
| | - Jun-Ichi Nishida
- Graduate School of Engineering, University of Hyogo, 2167 Shosha, Himeji, Hyogo, 671-2280, Japan
| | - John W Jones
- Department of Chemistry and Center for Advanced Study, University of Nevada, Reno, NV, 89557-0020, USA
| | - Lawrence T Scott
- Department of Chemistry and Center for Advanced Study, University of Nevada, Reno, NV, 89557-0020, USA.,Merkert Chemistry Center, Department of Chemistry, Boston College, Chestnut Hill, MA, 02467-3860, USA
| | - Takeshi Kawase
- Graduate School of Engineering, University of Hyogo, 2167 Shosha, Himeji, Hyogo, 671-2280, Japan
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Shoji T, Nagai D, Tanaka M, Araki T, Ohta A, Sekiguchi R, Ito S, Mori S, Okujima T. Synthesis of 2-Aminofurans by Sequential [2+2] Cycloaddition-Nucleophilic Addition of 2-Propyn-1-ols with Tetracyanoethylene and Amine-Induced Transformation into 6-Aminopentafulvenes. Chemistry 2017; 23:5126-5136. [DOI: 10.1002/chem.201700121] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2017] [Indexed: 01/07/2023]
Affiliation(s)
- Taku Shoji
- Department of Material Science; Graduate School of Science and Technology; Shinshu University, Matsumoto; 390-8621 Nagano Japan
| | - Daichi Nagai
- Department of Material Science; Graduate School of Science and Technology; Shinshu University, Matsumoto; 390-8621 Nagano Japan
| | - Miwa Tanaka
- Department of Material Science; Graduate School of Science and Technology; Shinshu University, Matsumoto; 390-8621 Nagano Japan
| | - Takanori Araki
- Department of Material Science; Graduate School of Science and Technology; Shinshu University, Matsumoto; 390-8621 Nagano Japan
| | - Akira Ohta
- Department of Material Science; Graduate School of Science and Technology; Shinshu University, Matsumoto; 390-8621 Nagano Japan
| | - Ryuta Sekiguchi
- Graduate School of Science and Technology; Hirosaki University, Hirosaki; 036-8561 Aomori Japan
| | - Shunji Ito
- Graduate School of Science and Technology; Hirosaki University, Hirosaki; 036-8561 Aomori Japan
| | - Shigeki Mori
- Advanced Research Support Center; Ehime University, Matsuyama; 790-8577 Ehime Japan
| | - Tetsuo Okujima
- Department of Chemistry and Biology; Graduate School of Science and Engineering; Ehime University, Matsuyama; 790-8577 Ehime Japan
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4
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Arthur C. Cope Scholar Awards / ACS Inorganic Nanoscience Award: R. E. Schaak / Priestley Medal: T. J. Marks. Angew Chem Int Ed Engl 2016; 55:9825-6. [DOI: 10.1002/anie.201605828] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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5
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Arthur C. Cope Scholar Awards / Inorganic Nanoscience Award der ACS: R. E. Schaak / Priestley-Medaille: T. J. Marks. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201605828] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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