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Sato K, Teranishi S, Sakaue A, Karuo Y, Tarui A, Kawai K, Takeda H, Kinashi T, Omote M. Rhodium-catalyzed homo-coupling reaction of aryl Grignard reagents and its application for the synthesis of an integrin inhibitor. Beilstein J Org Chem 2024; 20:1341-1347. [PMID: 38887571 PMCID: PMC11181203 DOI: 10.3762/bjoc.20.118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2024] [Accepted: 05/29/2024] [Indexed: 06/20/2024] Open
Abstract
A novel Rh-catalyzed one-pot homo-coupling reaction of aryl Grignard reagents was achieved. The reaction with bromobenzenes having an electron-donating group or a halogen substituent gave the corresponding homo-coupling products in good yields, although the reaction using heterocyclic or aliphatic bromides scarcely proceeded. A Rh(III)-bis(aryl) complex, which might be formed from RhCl(PPh3)3 and the aryl Grignard reagents, plays an important role in giving the homo-coupling products in this reaction. Furthermore, we applied the reaction to the synthesis of a novel inhibitor for integrins which is critical for several diseases.
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Affiliation(s)
- Kazuyuki Sato
- Faculty of Pharmaceutical Sciences, Setsunan University, 45-1 Nagaotoge-cho, Hirakata, Osaka, 573-0101, Japan
| | - Satoki Teranishi
- Faculty of Pharmaceutical Sciences, Setsunan University, 45-1 Nagaotoge-cho, Hirakata, Osaka, 573-0101, Japan
| | - Atsushi Sakaue
- Kyowa Marina Hospital, 4-15-1 Nishinomiyahama, Nishinomiya, Hyogo 662-0934, Japan
| | - Yukiko Karuo
- Faculty of Pharmaceutical Sciences, Setsunan University, 45-1 Nagaotoge-cho, Hirakata, Osaka, 573-0101, Japan
| | - Atsushi Tarui
- Faculty of Pharmaceutical Sciences, Setsunan University, 45-1 Nagaotoge-cho, Hirakata, Osaka, 573-0101, Japan
| | - Kentaro Kawai
- Faculty of Pharmaceutical Sciences, Setsunan University, 45-1 Nagaotoge-cho, Hirakata, Osaka, 573-0101, Japan
| | - Hiroyuki Takeda
- Division of Proteo-Drug-Discovery Sciences, Ehime University Proteo-Science Center
- Bunkyo-cho, Matsuyama, Ehime, 790-8577, Japan,
| | - Tatsuo Kinashi
- Department of Molecular Genetics, Institute of Biomedical Science, Kansai Medical University, 2-5-1 Shin-machi, Hirakata, Osaka, 573-1010, Japan
| | - Masaaki Omote
- Faculty of Pharmaceutical Sciences, Setsunan University, 45-1 Nagaotoge-cho, Hirakata, Osaka, 573-0101, Japan
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Kuzhalmozhi Madarasi P, Sivasankar C. Grignard reagent dictated copper(I) phosphines catalyzed reductive coupling of diazo compounds: The chemistry beyond carbene generation. Appl Organomet Chem 2021. [DOI: 10.1002/aoc.6522] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
| | - Chinnappan Sivasankar
- Catalysis and Energy Laboratory, Department of Chemistry Pondicherry University Pondicherry India
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Yamada S, Nishizawa A, Agou T, Kubota T, Konno T. 1,2-Disubstituted 3,3,4,4,5,5-Hexafluorocyclopentenes as Bent Light-Emitting π-Conjugated Luminophores. European J Org Chem 2020. [DOI: 10.1002/ejoc.201901794] [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)
- Shigeyuki Yamada
- Faculty of Molecular Chemistry and Engineering; Kyoto Institute of Technology; Matsugasaki, Sakyo-ku 606-8585 Kyoto Japan
| | - Akito Nishizawa
- Faculty of Molecular Chemistry and Engineering; Kyoto Institute of Technology; Matsugasaki, Sakyo-ku 606-8585 Kyoto Japan
| | - Tomohiro Agou
- Department of Quantum Beam Science; Graduate School of Science and Engineering; Ibaraki University; 4-12-1 Naka-narusawa, Hitachi 316-8511 Ibaraki Japan
| | - Toshio Kubota
- Department of Quantum Beam Science; Graduate School of Science and Engineering; Ibaraki University; 4-12-1 Naka-narusawa, Hitachi 316-8511 Ibaraki Japan
| | - Tsutomu Konno
- Faculty of Molecular Chemistry and Engineering; Kyoto Institute of Technology; Matsugasaki, Sakyo-ku 606-8585 Kyoto Japan
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Yamada S, Nishizawa A, Morita M, Hosokai T, Okabayashi Y, Agou T, Hosoya T, Kubota T, Konno T. Synthesis and characterization of bent fluorine-containing donor-π-acceptor molecules as intense luminophores with large Stokes shifts. Org Biomol Chem 2019; 17:6911-6919. [PMID: 31271184 DOI: 10.1039/c9ob01300h] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Herein, we prepared novel bent fluorine-containing donor-π-acceptor (D-π-A) molecules from commercially available octafluorocyclopentene using a facile two-step procedure, revealing that the above molecules absorb UV-light and exhibit yellow photoluminescence (PL) with high PL efficiencies (ΦPL) in solution. The corresponding Stokes shifts exceeded 10 000 cm-1, and the maximum PL wavelength (λPL) strongly depended on solvent polarity or intermolecular interactions in the solid state. On the basis of a Lippert-Mataga plot, PL was confidently assigned to radiative relaxation from an intramolecular charge-transfer excited state. Moreover, the synthesized luminophores showed intense PL even in the crystalline state and exhibited alkoxy chain length-dependent PL behavior (e.g., high ΦPL, λPL = 486-540 nm).
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Affiliation(s)
- Shigeyuki Yamada
- Faculty of Molecular Chemistry and Engineering, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan.
| | - Akito Nishizawa
- Faculty of Molecular Chemistry and Engineering, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan.
| | - Masato Morita
- Faculty of Molecular Chemistry and Engineering, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan.
| | - Takuya Hosokai
- National Metrology Institute of Japan, National Institute of Advanced Industrial Science and Technology, 1-1-1 Umezono, Tsukuba 305-8560, Japan
| | - Yusuke Okabayashi
- National Metrology Institute of Japan, National Institute of Advanced Industrial Science and Technology, 1-1-1 Umezono, Tsukuba 305-8560, Japan
| | - Tomohiro Agou
- Department of Quantum Beam Science, Graduate School of Science and Engineering, Ibaraki University, 4-12-1 Naka-narusawa, Hitachi, Ibaraki 316-8511, Japan
| | - Takaaki Hosoya
- Department of Quantum Beam Science, Graduate School of Science and Engineering, Ibaraki University, 4-12-1 Naka-narusawa, Hitachi, Ibaraki 316-8511, Japan
| | - Toshio Kubota
- Department of Quantum Beam Science, Graduate School of Science and Engineering, Ibaraki University, 4-12-1 Naka-narusawa, Hitachi, Ibaraki 316-8511, Japan
| | - Tsutomu Konno
- Faculty of Molecular Chemistry and Engineering, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan.
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