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Kazama K, Kurokawa R, Inoue K, Kinoshita H, Miura K. One-Pot Direct Synthesis of Siloles from 1-Bromo-2-silylethynylbenzenes or 1-Bromo-4-silyl-1,3-enynes. J Org Chem 2022; 87:10416-10421. [PMID: 35802630 DOI: 10.1021/acs.joc.2c00847] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We propose one-pot synthesis of siloles from readily available starting materials. This methodology is practical for the preparation of multisubstituted siloles in good to excellent yields with complete regioselectivity. Sequential reactions, such as lithiation, silylation, and diisobutylaluminum-hydride-promoted cyclization, enable the preparation of the siloles. This transformation provides siloles through two efficient C-Si bond formations in one vessel.
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Affiliation(s)
- Koyo Kazama
- Department of Applied Chemistry, Graduate School of Science and Engineering, Saitama University, 255 Shimo-ohkubo, Sakura-ku, Saitama 338-8570, Japan
| | - Rei Kurokawa
- Department of Applied Chemistry, Graduate School of Science and Engineering, Saitama University, 255 Shimo-ohkubo, Sakura-ku, Saitama 338-8570, Japan
| | - Kei Inoue
- Department of Applied Chemistry, Graduate School of Science and Engineering, Saitama University, 255 Shimo-ohkubo, Sakura-ku, Saitama 338-8570, Japan
| | - Hidenori Kinoshita
- Department of Applied Chemistry, Graduate School of Science and Engineering, Saitama University, 255 Shimo-ohkubo, Sakura-ku, Saitama 338-8570, Japan
| | - Katsukiyo Miura
- Department of Applied Chemistry, Graduate School of Science and Engineering, Saitama University, 255 Shimo-ohkubo, Sakura-ku, Saitama 338-8570, Japan
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Kojima K, Uchida S, Kinoshita H, Miura K. Synthesis of Polysubstituted Germoles and Benzogermoles Using a Substoichiometric Amount of Diisobutylaluminum Hydride. Org Lett 2021; 23:4598-4602. [PMID: 34061552 DOI: 10.1021/acs.orglett.1c01314] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We developed a synthetic route to unsymmetrically polysubstituted germoles bearing different substituents from 1-hydrogermyl-4-silyl-1,3-enynes. The reaction proceeded with 0.5 equiv of diisobutylaluminum hydride. Various 2-silylgermoles including benzogermoles were obtained in good to excellent yields. 2-Germylbenzogermoles could be also successfully synthesized from 1-hydrogermyl-4-germyl-1,3-enynes under the same reaction conditions.
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Affiliation(s)
- Ko Kojima
- Department of Applied Chemistry, Graduate School of Science and Engineering, Saitama University, 255 Shimo-ohkubo, Sakura-ku, Saitama 338-8570, Japan
| | - Seiya Uchida
- Department of Applied Chemistry, Graduate School of Science and Engineering, Saitama University, 255 Shimo-ohkubo, Sakura-ku, Saitama 338-8570, Japan
| | - Hidenori Kinoshita
- Department of Applied Chemistry, Graduate School of Science and Engineering, Saitama University, 255 Shimo-ohkubo, Sakura-ku, Saitama 338-8570, Japan
| | - Katsukiyo Miura
- Department of Applied Chemistry, Graduate School of Science and Engineering, Saitama University, 255 Shimo-ohkubo, Sakura-ku, Saitama 338-8570, Japan
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Yang L, Koo D, Wu J, Wong JM, Day T, Zhang R, Kolongoda H, Liu K, Wang J, Ding Z, Pagenkopf BL. Benzosiloles with Crystallization-Induced Emission Enhancement of Electrochemiluminescence: Synthesis, Electrochemistry, and Crystallography. Chemistry 2020; 26:11715-11721. [PMID: 32484982 DOI: 10.1002/chem.202002647] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Indexed: 01/19/2023]
Abstract
Crystallization-induced emission enhancement (CIEE) was demonstrated for the first time for electrochemilunimescence (ECL) with two new benzosiloles. Compared with their solution, the films of the two benzosiloles gave CIEE of 24 and 16 times. The mechanism of the CIEE-ECL was examined by spooling ECL spectroscopy, X-ray crystal structure analysis, photoluminescence, and DFT calculations. This CIEE-ECL system is a complement to the well-established aggregation-induced emission enhancement (AIEE) systems. Unique intermolecular interactions are noted in the crystalline chromophore. The first heterogeneous ECL system is established for organic compounds with highly hydrophobic properties.
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Affiliation(s)
- Liuqing Yang
- Department of Chemistry, The University of Western Ontario, 1151 Richmond St., London, N6A 5B7, ON, Canada
| | - Donghyun Koo
- Department of Chemistry, The University of Western Ontario, 1151 Richmond St., London, N6A 5B7, ON, Canada
| | - Jackie Wu
- Department of Chemistry, The University of Western Ontario, 1151 Richmond St., London, N6A 5B7, ON, Canada
| | - Jonathan M Wong
- Department of Chemistry, The University of Western Ontario, 1151 Richmond St., London, N6A 5B7, ON, Canada
| | - Tyler Day
- Department of Chemistry, The University of Western Ontario, 1151 Richmond St., London, N6A 5B7, ON, Canada
| | - Ruizhong Zhang
- Department of Chemistry, The University of Western Ontario, 1151 Richmond St., London, N6A 5B7, ON, Canada
| | - Harshana Kolongoda
- Department of Chemistry, The University of Western Ontario, 1151 Richmond St., London, N6A 5B7, ON, Canada
| | - Kehan Liu
- Department of Chemistry, The University of Western Ontario, 1151 Richmond St., London, N6A 5B7, ON, Canada
| | - Jian Wang
- Department of Chemistry, The University of Western Ontario, 1151 Richmond St., London, N6A 5B7, ON, Canada
| | - Zhifeng Ding
- Department of Chemistry, The University of Western Ontario, 1151 Richmond St., London, N6A 5B7, ON, Canada
| | - Brian L Pagenkopf
- Department of Chemistry, The University of Western Ontario, 1151 Richmond St., London, N6A 5B7, ON, Canada
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Uchida S, Kinoshita H, Miura K. Diisobutylaluminum Hydride Promoted Selectivity-Switchable Synthesis of Benzothiophene Oxides and Benzothiophenes via an Al-Li-Dimetalated Intermediate. Org Lett 2020; 22:3123-3127. [PMID: 32239951 DOI: 10.1021/acs.orglett.0c00884] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
We developed an efficient and direct method for synthesis of benzothiophene oxides from 1-bromo-2-[2-(trimethylsilyl)ethynyl]benzenes and thionyl chloride as an easily accessible source of the sulfinyl group. Benzothiophenes were also synthesized selectively by simply increasing the amount of thionyl chloride. These methods achieved efficient syntheses of various benzothiophene oxides and benzothiophenes. The further modification of the benzothiophene oxides obtained was also demonstrated.
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Affiliation(s)
- Seiya Uchida
- Department of Applied Chemistry, Graduate School of Science and Engineering, Saitama University, 255 Shimo-ohkubo, Sakura-ku, Saitama 338-8570, Japan
| | - Hidenori Kinoshita
- Department of Applied Chemistry, Graduate School of Science and Engineering, Saitama University, 255 Shimo-ohkubo, Sakura-ku, Saitama 338-8570, Japan
| | - Katsukiyo Miura
- Department of Applied Chemistry, Graduate School of Science and Engineering, Saitama University, 255 Shimo-ohkubo, Sakura-ku, Saitama 338-8570, Japan
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Park JY, Jung YM, Park YT. Syntheses of 1,1‐Diethyl‐ or ‐Dihexyl‐3,4‐Diphenyl‐2,5‐Dibromo‐ or ‐Bis(Trimethylsilyl)Siloles and Electrochemical Properties for Lithium Ion Battery. B KOREAN CHEM SOC 2019. [DOI: 10.1002/bkcs.11911] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Ji Young Park
- Department of ChemistryKeimyung University Daegu 42601 South Korea
| | - Young Min Jung
- Division of Green Energy ResearchDaegu Gyeongbuk Institute of Science and Technology Daegu 42988 South Korea
| | - Young Tae Park
- Department of ChemistryKeimyung University Daegu 42601 South Korea
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Kinoshita H, Miura K. Development of Intramolecular C-C and C-Si Bond Forming Reactions Promoted by Diisobutylaluminum Hydride. J SYN ORG CHEM JPN 2019. [DOI: 10.5059/yukigoseikyokaishi.77.58] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Hidenori Kinoshita
- Department of Applied Chemistry, Graduate School of Science and Engineering, Saitama University
| | - Katsukiyo Miura
- Department of Applied Chemistry, Graduate School of Science and Engineering, Saitama University
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