1
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Watanabe K, Pati NN, Inokuma Y. Contracted porphyrins and calixpyrroles: synthetic challenges and ring-contraction effects. Chem Sci 2024; 15:6994-7009. [PMID: 38756809 PMCID: PMC11095365 DOI: 10.1039/d4sc02028f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2024] [Accepted: 04/19/2024] [Indexed: 05/18/2024] Open
Abstract
Ring-contracted porphyrin analogues, such as subporphyrins and calix[3]pyrroles, have recently attracted considerable attention not only as challenging synthetic targets but also as functional macrocyclic compounds. Although canonical porphyrins and calix[4]pyrrole are selectively generated via acid-catalyzed condensation reactions of pyrrole monomers, their tripyrrolic analogues are always missing under similar conditions. Recent progress in synthesis has shown that strain-controlled approaches using boron(iii)-templating, core-modification, or ring tightening provide access to various contracted porphyrins. The tripyrrolic macrocycles are a new class of functional macrocycles exhibiting unique ring-contraction effects, including strong boron chelation and strain-induced ring expansion. This Perspective reviews recent advances in synthetic strategies and the novel ring-contraction effects of subporphyrins, triphyrins(2.1.1), calix[3]pyrroles, and their analogous.
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Affiliation(s)
- Keita Watanabe
- Division of Applied Chemistry, Faculty of Engineering, Hokkaido University Kita 13, Nishi 8 Kita-ku Sapporo Hokkaido 060-8628 Japan
| | - Narendra Nath Pati
- Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University Kita 21, Nishi 10, Kita-ku Sapporo Hokkaido 001-0021 Japan
| | - Yasuhide Inokuma
- Division of Applied Chemistry, Faculty of Engineering, Hokkaido University Kita 13, Nishi 8 Kita-ku Sapporo Hokkaido 060-8628 Japan
- Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University Kita 21, Nishi 10, Kita-ku Sapporo Hokkaido 001-0021 Japan
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2
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Li Z, Zhang L, Wu Q, Li H, Kang Z, Yu C, Hao E, Jiao L. Boron-Templated Synthesis of B(III)-Submonoazaporphyrins: The Hybrids of B(III)-Subporphyrins and B(III)-Subporphyrazines. J Am Chem Soc 2022; 144:6692-6697. [PMID: 35294839 DOI: 10.1021/jacs.2c01671] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
A new class of hybridized and core-contracted porphyrinoids, B(III)-submonoazaporphyrins, which may be viewed as the hybrids of B(III)-subporphyrins and B(III)-subporphyrazines, was reported. The versatile single-step synthesis was based on an efficient intramolecular nucleophilic substitution reaction on readily available α-amino-α'-bromotripyrromethenes, while boronic acids, trifluoroborate salts, or trimethoxyborate simultaneously acted as the template and provider of apical substituent. Those new hybrids, as robust and photostable compounds, were fully characterized by NMR, mass spectrometry, and X-ray crystallography. They showed intense absorption and emission in the visible region, and their electrochemical properties and computational calculation are also discussed.
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Affiliation(s)
- Zhongxin Li
- Key Laboratory of Functional Molecular Solids, Ministry of Education, and School of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, China
| | - Lei Zhang
- Key Laboratory of Functional Molecular Solids, Ministry of Education, and School of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, China
| | - Qinghua Wu
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei 230012, China
| | - Heng Li
- Key Laboratory of Functional Molecular Solids, Ministry of Education, and School of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, China
| | - Zhengxin Kang
- Key Laboratory of Functional Molecular Solids, Ministry of Education, and School of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, China
| | - Changjiang Yu
- Key Laboratory of Functional Molecular Solids, Ministry of Education, and School of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, China
| | - Erhong Hao
- Key Laboratory of Functional Molecular Solids, Ministry of Education, and School of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, China
| | - Lijuan Jiao
- Key Laboratory of Functional Molecular Solids, Ministry of Education, and School of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, China
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3
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Xiao B, Huang X, Rao Y, Xu L, Yin B, Osuka A, Song J. Axially Arylene-bridged "Dumbbell" BIII-Subporphyrin Dimers and A Tetrameric Subporphyrin Nanocage. Chem Asian J 2022; 17:e202101406. [PMID: 35049147 DOI: 10.1002/asia.202101406] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Revised: 01/17/2022] [Indexed: 11/11/2022]
Abstract
Axially B-arylene-bridged "dumbbell" B III -subporphyrin (abbreviated as subporphyrin in this paper) dimers 3 , 4 , and 5 were prepared by reactions of B-methoxy subporphyrins with bromoaryl Grignard reagents and subsequent reductive coupling of the resulting B-bromoaryl subporphyrins with Ni(cod) 2 . This reductive coupling method was also used for synthesis of tetrameric subporphyrin nanocage 8 from meso-meso linked subporphyrin dimer 7 . Nanocage 8 displayed a red-shifted Q-like band and reduced fluorescence quantum yield as compared with 6 and 7 .
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Affiliation(s)
- Boyu Xiao
- Hunan Normal University - Erliban Campus: Hunan Normal University, college of chemistry and chemical engineering, CHINA
| | - Xi Huang
- Hunan Normal University - Erliban Campus: Hunan Normal University, college of chemistry and chemical engineering, CHINA
| | - Yutao Rao
- Hunan Normal University - Erliban Campus: Hunan Normal University, college of chemistry and chemical engineering, CHINA
| | - Ling Xu
- Hunan Normal University - Erliban Campus: Hunan Normal University, college of chemistry and chemical engineering, CHINA
| | - Bangshao Yin
- Hunan Normal University - Erliban Campus: Hunan Normal University, college of chemistry and chemical engineering, CHINA
| | - Atsuhiro Osuka
- Hunan Normal University - Erliban Campus: Hunan Normal University, college of chemistry and chemical engineering, CHINA
| | - Jianxin Song
- Hunan Normal University, Chemistry, Yue Lu Qu Lushan Road 36, 410081, Changsha, CHINA
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4
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Lavarda G, Labella J, Martínez-Díaz MV, Rodríguez-Morgade MS, Osuka A, Torres T. Recent advances in subphthalocyanines and related subporphyrinoids. Chem Soc Rev 2022; 51:9482-9619. [DOI: 10.1039/d2cs00280a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Subporphyrinoids constitute a class of extremely versatile and attractive compounds. Herein, a comprehensive review of the most recent advances in the fundamentals and applications of these cone-shaped aromatic macrocycles is presented.
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Affiliation(s)
- Giulia Lavarda
- Department of Organic Chemistry, Universidad Autónoma de Madrid, Campus de Cantoblanco, 28049 Madrid, Spain
| | - Jorge Labella
- Department of Organic Chemistry, Universidad Autónoma de Madrid, Campus de Cantoblanco, 28049 Madrid, Spain
| | - M. Victoria Martínez-Díaz
- Department of Organic Chemistry, Universidad Autónoma de Madrid, Campus de Cantoblanco, 28049 Madrid, Spain
- Institute for Advanced Research in Chemical Sciences (IAdChem), Universidad Autónoma de Madrid, Campus de Cantoblanco, 28049 Madrid, Spain
| | - M. Salomé Rodríguez-Morgade
- Department of Organic Chemistry, Universidad Autónoma de Madrid, Campus de Cantoblanco, 28049 Madrid, Spain
- Institute for Advanced Research in Chemical Sciences (IAdChem), Universidad Autónoma de Madrid, Campus de Cantoblanco, 28049 Madrid, Spain
| | - Atsuhiro Osuka
- Key Laboratory of the Assembly and Application of Organic Functional Molecules of Hunan Province, Hunan Normal University, Changsha 410081, China
- Department of Chemistry, Graduate School of Science, Kyoto University, 606-8502 Kyoto, Japan
| | - Tomás Torres
- Department of Organic Chemistry, Universidad Autónoma de Madrid, Campus de Cantoblanco, 28049 Madrid, Spain
- Institute for Advanced Research in Chemical Sciences (IAdChem), Universidad Autónoma de Madrid, Campus de Cantoblanco, 28049 Madrid, Spain
- IMDEA-Nanociencia, c/Faraday 9, Campus de Cantoblanco, 28049 Madrid, Spain
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5
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Kise K, Lee YJ, Tanaka T, Kim D, Osuka A. Axially‐ and
Meso
‐Substituted Aza‐Crown‐Ether‐Incorporated B
III
Subporphyrins: Control of Electron‐Donating Ability by Metal Ion Chelation. Eur J Inorg Chem 2021. [DOI: 10.1002/ejic.202100502] [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)
- Koki Kise
- Department of Chemistry, Graduate School of Science Kyoto University Kyoto, Sakyo-ku 606-8502 Japan
| | - Yu Jin Lee
- Department of Chemistry Spectroscopy Laboratory of Functional π-Electronic Systems Yonsei University 50, Yonsei-ro, Seodaemun-gu Seoul 03722 Korea
| | - Takayuki Tanaka
- Department of Chemistry, Graduate School of Science Kyoto University Kyoto, Sakyo-ku 606-8502 Japan
| | - Dongho Kim
- Department of Chemistry Spectroscopy Laboratory of Functional π-Electronic Systems Yonsei University 50, Yonsei-ro, Seodaemun-gu Seoul 03722 Korea
| | - Atsuhiro Osuka
- Department of Chemistry, Graduate School of Science Kyoto University Kyoto, Sakyo-ku 606-8502 Japan
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6
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Periphery-Fused Chiral A 2B-Type Subporphyrin. Molecules 2021; 26:molecules26041140. [PMID: 33672731 PMCID: PMC7924371 DOI: 10.3390/molecules26041140] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Revised: 02/15/2021] [Accepted: 02/18/2021] [Indexed: 12/03/2022] Open
Abstract
Despite significant interest, the chiroptical properties of subporphyrins have rarely been investigated because chiral subporphyrins are elusive. Here, inherently chiral subporphyrins are elaborated by forming a fused pyran ring at the periphery of an A2B-type meso-aryl-substituted subporphyrin. Their circular dichroism (CD) properties are largely affected by the peripheral substituents and the dihedral angles between the meso-aryl substituents and the subporphyrin core: the β-perbromo subporphyrin with an orthogonal arrangement of the meso-phenyl substituents to the subporphyrin core exhibits weak CD signals corresponding to the Q bands, whereas the unsubstituted species with smaller dihedral angles shows relatively intense CD signals. A detailed structure–property relationship of these chiral subporphyrins was elucidated by time-dependent (TD) DFT calculations. This study reveals that the CD properties of chiral subporphyrins can be controlled by peripheral substitution and meso-aryl substituents.
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7
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Bekki Y, Osuka A. meso-Free B III Subporphyrins with Electron-donating Groups. Chem Asian J 2020; 15:1580-1589. [PMID: 32216056 DOI: 10.1002/asia.202000288] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Revised: 03/24/2020] [Indexed: 11/09/2022]
Abstract
meso-Free BIII 5,10-bis(p-dimethylaminophenyl)subporphyrins were synthesized. They display red-shifted absorption and fluorescence spectra, bathochromic behaviors in polar solvents, a high fluorescence quantum yield (ΦF =0.57), and a small HOMO-LUMO gap mainly due to destabilized HOMO as compared with meso-free BIII 5,10-diphenylsubporphyrin. This subporphyrin serves as a nice precursor of various meso-substituted BIII subporphyrins such as BIII meso-nitrosubporphyrin, BIII meso-aminosubporphyrin, and meso-meso' linked BIII azosubporphyrin dimer. Reactions of meso-free BIII subporphyrins with NBS or bis(2,4,6-trimethylpyridine)bromonium hexafluorophosphate gave meso-meso' linked subporphyrin dimers, often as a major product along with meso-bromosubporphyrins.
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Affiliation(s)
- Yosuke Bekki
- Department of Chemistry Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto, 606-8502, Japan
| | - Atsuhiro Osuka
- Department of Chemistry Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto, 606-8502, Japan
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8
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Winterfeld KA, Lavarda G, Yoshida K, Bayerlein MJ, Kise K, Tanaka T, Osuka A, Guldi DM, Torres T, Bottari G. Synthesis and Optical Features of Axially and Peripherally Substituted Subporphyrins. A Paradigmatic Example of Charge Transfer versus Exciplex States. J Am Chem Soc 2020; 142:7920-7929. [DOI: 10.1021/jacs.0c01646] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Kim A. Winterfeld
- Department of Chemistry and Pharmacy, Interdisciplinary Center for Molecular Materials (ICMM), Friedrich-Alexander-Universität Erlangen−Nürnberg, Egerlandstrasse 3, 91058 Erlangen, Germany
| | - Giulia Lavarda
- Departamento de Quı́mica Orgánica, Universidad Autónoma de Madrid, 28049 Madrid, Spain
| | - Kota Yoshida
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto, 606-8502 Japan
| | - Maximilian J. Bayerlein
- Department of Chemistry and Pharmacy, Interdisciplinary Center for Molecular Materials (ICMM), Friedrich-Alexander-Universität Erlangen−Nürnberg, Egerlandstrasse 3, 91058 Erlangen, Germany
| | - Koki Kise
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto, 606-8502 Japan
| | - Takayuki Tanaka
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto, 606-8502 Japan
| | - Atsuhiro Osuka
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto, 606-8502 Japan
| | - Dirk M. Guldi
- Department of Chemistry and Pharmacy, Interdisciplinary Center for Molecular Materials (ICMM), Friedrich-Alexander-Universität Erlangen−Nürnberg, Egerlandstrasse 3, 91058 Erlangen, Germany
| | - Tomás Torres
- Departamento de Quı́mica Orgánica, Universidad Autónoma de Madrid, 28049 Madrid, Spain
- IMDEA-Nanociencia, Campus de Cantoblanco, 28049 Madrid, Spain
- Institute for Advanced Research in Chemical Sciences (IAdChem), Universidad Autónoma de Madrid, 28049 Madrid, Spain
| | - Giovanni Bottari
- Departamento de Quı́mica Orgánica, Universidad Autónoma de Madrid, 28049 Madrid, Spain
- IMDEA-Nanociencia, Campus de Cantoblanco, 28049 Madrid, Spain
- Institute for Advanced Research in Chemical Sciences (IAdChem), Universidad Autónoma de Madrid, 28049 Madrid, Spain
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9
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Lavarda G, Shimizu D, Torres T, Osuka A. meso
‐(2‐Pyridyl)‐boron(III)‐subporphyrin: Perimeter Iridium(III) Coordination. Angew Chem Int Ed Engl 2020; 59:3127-3130. [DOI: 10.1002/anie.201914853] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2019] [Indexed: 11/07/2022]
Affiliation(s)
- Giulia Lavarda
- Departamento de Química OrgánicaUniversidad Autonoma de Madrid Cantoblanco 28049 Madrid Spain
| | - Daiki Shimizu
- Department of ChemistryGraduate School of ScienceKyoto University Sakyo-ku Kyoto 606-8502 Japan
| | - Tomás Torres
- Departamento de Química OrgánicaUniversidad Autonoma de Madrid Cantoblanco 28049 Madrid Spain
- Instituto Madrileño de Estudios Avanzados (IMDEA)-Nanociencia c/ Faraday, 9, Cantoblanco 28049 Madrid Spain
- Institute for Advanced Research in Chemical Sciences (IAdChem)Universidad Autonoma de Madrid Cantoblanco 28049 Madrid Spain
| | - Atsuhiro Osuka
- Department of ChemistryGraduate School of ScienceKyoto University Sakyo-ku Kyoto 606-8502 Japan
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10
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meso
‐(2‐Pyridyl)‐boron(III)‐subporphyrin: Perimeter Iridium(III) Coordination. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201914853] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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11
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Kise K, Osuka A. Singly and Doubly Quinoxaline-Fused B III Subporphyrins. Chemistry 2019; 25:15493-15497. [PMID: 31692130 DOI: 10.1002/chem.201904151] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Revised: 09/30/2019] [Indexed: 11/09/2022]
Abstract
B-Phenyl BIII subporphyrin-α-diones prepared in a three-step reaction sequence from the parent subporphyrin were condensed with 1,2-diaminobenzenes to give the corresponding quinoxaline-fused subporphyrins in variable yields. Quinoxaline-fused B-phenyl-5,10,15-triphenyl BIII subporphyrin was transformed to the corresponding subporphyrin-α-dione in the same three-step reaction sequence, which was then condensed with 1,2-diaminobenzene to give doubly quinoxaline-fused subporphyrin. These quinoxaline-fused subporphyrins exhibit redshifted absorption and fluorescence spectra compared with the parent one. A singly quinoxaline-fused subporphyrin bearing three meso-bis(4-dimethylaminophenyl)aminophenyl substituents shows blueshifted fluorescence in less polar solvent, which has been ascribed to emission associated with charge recombination of intramolecular charge transfer (CT) state.
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Affiliation(s)
- Koki Kise
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto, 606-8502, Japan
| | - Atsuhiro Osuka
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto, 606-8502, Japan
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12
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Guan H, Zhou M, Yin B, Xu L, Song J. Synthesis and characterization of π-extended "earring" subporphyrins. Beilstein J Org Chem 2018; 14:1956-1960. [PMID: 30202449 PMCID: PMC6122274 DOI: 10.3762/bjoc.14.170] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2018] [Accepted: 07/04/2018] [Indexed: 12/14/2022] Open
Abstract
A π-extended "earring" subporphyrin 3 was synthesized from β,β'-diiodosubporphyrin and diboryltripyrrane via a Suzuki-Miyaura coupling and following oxidation. Its Pd complex 3Pd was also synthesized and both of the compounds were fully characterized by 1H NMR, MS and X-ray single crystal diffraction. The 1H NMR spectra and single crystal structures revealed that aromatic ring current did not extend to the "ear" in both of the two compounds. Their UV-vis/NIR spectra were recorded and the absorption of both compounds is extended to the NIR region and that the absorption of 3Pd is further red-shifted and more intense.
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Affiliation(s)
- Haiyan Guan
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education of China), Key Laboratory of Application and Assemble of Organic Functional molecules, Hunan Normal University, Changsha 410081, P. R. China
| | - Mingbo Zhou
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education of China), Key Laboratory of Application and Assemble of Organic Functional molecules, Hunan Normal University, Changsha 410081, P. R. China
| | - Bangshao Yin
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education of China), Key Laboratory of Application and Assemble of Organic Functional molecules, Hunan Normal University, Changsha 410081, P. R. China
| | - Ling Xu
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education of China), Key Laboratory of Application and Assemble of Organic Functional molecules, Hunan Normal University, Changsha 410081, P. R. China
| | - Jianxin Song
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education of China), Key Laboratory of Application and Assemble of Organic Functional molecules, Hunan Normal University, Changsha 410081, P. R. China
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13
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Bekki Y, Shimizu D, Fujimoto K, Osuka A. meso-Functionalization of Boron(III) Subporphyrin with Boron(III) meso-Lithiosubporphyrin. Chemistry 2018; 24:12708-12715. [PMID: 29882368 DOI: 10.1002/chem.201802339] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2018] [Revised: 06/06/2018] [Indexed: 11/05/2022]
Abstract
Boron(III) meso-lithiosubporphyrin was prepared by bromine-lithium exchange of B-tolyl BIII meso-bromosubporphyrin with n-butyllithium at -98 °C. The resulting subporphyrinyllithium was treated with various electrophiles such as benzophenone, N,N-dimethylformamide, CO2 , chlorotrimethylsilane, N-fluorobenzenesulfonimide, and dimesitylboryl fluoride to give the corresponding meso-functionalized BIII subporphyrins. The nucleophile was also used to construct BIII subporphyrin dimers such as bis(BIII subporphyrinyl)ketone, bis(BIII subporphyrinyl)carbinol, and disilane-bridged BIII subporphyrin dimer. The structural, optical, and electrochemical properties of these meso-functionalized BIII subporphyrins were examined by UV/Vis absorption and fluorescence spectroscopy, electrochemical studies, and DFT calculations.
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Affiliation(s)
- Yosuke Bekki
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto, 606-8502, Japan
| | - Daiki Shimizu
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto, 606-8502, Japan
| | - Keisuke Fujimoto
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto, 606-8502, Japan
| | - Atsuhiro Osuka
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto, 606-8502, Japan
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14
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Yoshida K, Osuka A. Pyrrole-Modified Subporphyrins Bearing a Sulfur-Containing Heterocyclic Unit. Helv Chim Acta 2018. [DOI: 10.1002/hlca.201800025] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Kota Yoshida
- Department of Chemistry; Graduate School of Science; Kyoto University; Sakyo-ku Kyoto 606-8502 Japan
| | - Atsuhiro Osuka
- Department of Chemistry; Graduate School of Science; Kyoto University; Sakyo-ku Kyoto 606-8502 Japan
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15
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Yoshida K, Osuka A. Subporpholactone, Subporpholactam, Imidazolosubporphyrin, and Iridium Complexes of Imidazolosubporphyrin: Formation of Iridium Carbene Complexes. Angew Chem Int Ed Engl 2017; 57:338-342. [DOI: 10.1002/anie.201711166] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2017] [Indexed: 11/11/2022]
Affiliation(s)
- Kota Yoshida
- Department of Chemistry; Graduate School of Science; Kyoto University; Sakyo-ku Kyoto 606-8502 Japan
| | - Atsuhiro Osuka
- Department of Chemistry; Graduate School of Science; Kyoto University; Sakyo-ku Kyoto 606-8502 Japan
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16
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Yoshida K, Osuka A. Subporpholactone, Subporpholactam, Imidazolosubporphyrin, and Iridium Complexes of Imidazolosubporphyrin: Formation of Iridium Carbene Complexes. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201711166] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Kota Yoshida
- Department of Chemistry; Graduate School of Science; Kyoto University; Sakyo-ku Kyoto 606-8502 Japan
| | - Atsuhiro Osuka
- Department of Chemistry; Graduate School of Science; Kyoto University; Sakyo-ku Kyoto 606-8502 Japan
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17
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Shimizu D, Furukawa K, Osuka A. Stable Subporphyrin meso
-Aminyl Radicals without Resonance Stabilization by a Neighboring Heteroatom. Angew Chem Int Ed Engl 2017; 56:7435-7439. [DOI: 10.1002/anie.201703097] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2017] [Indexed: 12/12/2022]
Affiliation(s)
- Daiki Shimizu
- Department of Chemistry; Graduate School of Science; Kyoto University, Sakyo-ku; Kyoto 606-8502 Japan
| | - Ko Furukawa
- Center for Instrumental Analysis; Niigata University, Nishi-ku; Niigata 950-2181 Japan
| | - Atsuhiro Osuka
- Department of Chemistry; Graduate School of Science; Kyoto University, Sakyo-ku; Kyoto 606-8502 Japan
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18
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Shimizu D, Furukawa K, Osuka A. Stable Subporphyrin meso
-Aminyl Radicals without Resonance Stabilization by a Neighboring Heteroatom. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201703097] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Daiki Shimizu
- Department of Chemistry; Graduate School of Science; Kyoto University, Sakyo-ku; Kyoto 606-8502 Japan
| | - Ko Furukawa
- Center for Instrumental Analysis; Niigata University, Nishi-ku; Niigata 950-2181 Japan
| | - Atsuhiro Osuka
- Department of Chemistry; Graduate School of Science; Kyoto University, Sakyo-ku; Kyoto 606-8502 Japan
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19
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Yoshida K, Cha W, Kim D, Osuka A. Synthesis of Boron(III)-Coordinated Subchlorophins and Their Peripheral Modifications. Angew Chem Int Ed Engl 2017; 56:2492-2496. [PMID: 28112474 DOI: 10.1002/anie.201612277] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2016] [Indexed: 11/07/2022]
Abstract
A pyrrole-cleaving modification to transform boron(III) meso-triphenylsubporphyrin into boron(III) meso-triphenylsubchlorophin has been developed. Boron(III) subchlorophins thus synthesized show absorption and fluorescence spectra that are roughly similar to those of boron(III) subchlorins, but B-methoxy boron(III) subchlorophin showed considerably intensified fluorescence and a small Stokes shift. Peripheral modification reactions of B-phenyl boron(III) subchlorophin such as regioselective nitration with Cu(NO3 )2 ⋅3 H2 O, ipso-substitution reactions of boron(III) α-nitrosubchlorophin with CsF and CsCl, and Pd-catalyzed cross-coupling reactions of boron(III) α-chlorosubchlorophin with arylacetylenes, have been also explored to tune the optical properties of subchlorophins.
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Affiliation(s)
- Kota Yoshida
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto, 606-8502, Japan
| | - Wonhee Cha
- Spectroscopy Laboratory for Functional π-Electronic Systems and Department of Chemistry, Yonsei University, Seoul, 120-749, Korea
| | - Dongho Kim
- Spectroscopy Laboratory for Functional π-Electronic Systems and Department of Chemistry, Yonsei University, Seoul, 120-749, Korea
| | - Atsuhiro Osuka
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto, 606-8502, Japan
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Yoshida K, Cha W, Kim D, Osuka A. Synthesis of Boron(III)-Coordinated Subchlorophins and Their Peripheral Modifications. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201612277] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Kota Yoshida
- Department of Chemistry, Graduate School of Science; Kyoto University; Sakyo-ku Kyoto 606-8502 Japan
| | - Wonhee Cha
- Spectroscopy Laboratory for Functional π-Electronic Systems and Department of Chemistry; Yonsei University; Seoul 120-749 Korea
| | - Dongho Kim
- Spectroscopy Laboratory for Functional π-Electronic Systems and Department of Chemistry; Yonsei University; Seoul 120-749 Korea
| | - Atsuhiro Osuka
- Department of Chemistry, Graduate School of Science; Kyoto University; Sakyo-ku Kyoto 606-8502 Japan
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21
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Zatsikha YV, Didukh NO, Nemez D, Schlachter AC, Karsenti PL, Kovtun YP, Harvey PD, Nemykin VN. Ferrocene–BODIPYmerocyanine dyads: new NIR absorbing platforms with optical properties susceptible to protonation. Chem Commun (Camb) 2017. [DOI: 10.1039/c7cc03332j] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Ferrocene–BODIPYmerocyanine dyads 5 and 6 were synthesized and characterized by spectroscopy, electrochemistry, and DFT calculations.
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Affiliation(s)
| | - Natalia O. Didukh
- Department of Chemistry
- University of Manitoba
- Winnipeg
- Canada
- Institute of Organic Chemistry
| | - Dion Nemez
- Department of Chemistry
- University of Manitoba
- Winnipeg
- Canada
| | | | | | - Yuriy P. Kovtun
- Institute of Organic Chemistry
- National Academy of Sciences of Ukraine
- 02660 Kyiv
- Ukraine
| | | | - Victor N. Nemykin
- Department of Chemistry
- University of Manitoba
- Winnipeg
- Canada
- Department of Chemistry & Biochemistry
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22
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Shimizu S. Recent Advances in Subporphyrins and Triphyrin Analogues: Contracted Porphyrins Comprising Three Pyrrole Rings. Chem Rev 2016; 117:2730-2784. [PMID: 27779851 DOI: 10.1021/acs.chemrev.6b00403] [Citation(s) in RCA: 108] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Subporphyrinato boron (subporphyrin) was elusive until the syntheses of tribenzosubporphine in 2006 and meso-aryl-substituted subporphyrin in 2007. These novel contracted analogues possess a 14π-electron conjugated system embedded in a bowl-shaped structure. They exhibit absorption and fluorescence in the UV/vis region and nonlinear optical properties due to their octupolar structures. The unique coordination geometry around the central boron atom in the structure of subporphyrin enabled investigation of rare boron species, such as borenium cations, boron hydrides, and boron peroxides. Along with the burgeoning development of the chemistry of subporphyrins, analogous triphyrin systems have also emerged. Their rich coordination chemistry as a result of their free-base structures, which are different from the boron-coordinating structure of subporphyrins, has been intensively investigated. On the basis of the unique structures and reactivities of subporphyrins and their related triphyrin analogues, supramolecular architectures and covalently linked multicomponent systems have also been actively pursued. This Review provides an overview of the development of subporphyrin and triphyrin chemistry in the past decade and future prospects in this field, which may inspire molecular design toward applications based on their unique properties.
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Affiliation(s)
- Soji Shimizu
- Department of Chemistry and Biochemistry, Graduate School of Engineering, Kyushu University , Fukuoka 819-0395, Japan.,Center for Molecular Systems (CMS), Kyushu University , Fukuoka 819-0395, Japan
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23
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Shimizu D, Lee SK, Kim D, Osuka A. meso-Nitro- and meso-Aminosubporphyrinatoboron(III)s and meso-to-meso Azosubporphyrinatoboron(III)s. Chem Asian J 2016; 11:2946-2952. [PMID: 27529407 DOI: 10.1002/asia.201601019] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2016] [Revised: 08/11/2016] [Indexed: 11/09/2022]
Abstract
meso-Nitrosubporphyrinatoboron(III) was synthesized by nitration of meso-free subporphyrin with AgNO2 /I2 . The subsequent reduction with a combination of NaBH4 and Pd/C gave meso-aminosubporphyrinatoboron(III). meso-Nitro- and meso-amino-groups significantly influenced the electronic properties of subporphyrin, which has been confirmed by NMR and UV/Vis spectra, electrochemical analysis, and DFT calculations. Oxidation of meso-aminosubporphyrinatoboron(III)s with PbO2 cleanly gave meso-to-meso azosubporphyrinatoboron(III)s that exhibited almost coplanar conformations and large electronic interaction through the azo-bridge.
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Affiliation(s)
- Daiki Shimizu
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto, 606-8502, Japan
| | - Seung-Kyu Lee
- Spectroscopy Laboratory for Functional π-Electronic, Systems and Department of Chemistry, Yonsei University, Seoul, 03722, Korea
| | - Dongho Kim
- Spectroscopy Laboratory for Functional π-Electronic, Systems and Department of Chemistry, Yonsei University, Seoul, 03722, Korea.
| | - Atsuhiro Osuka
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto, 606-8502, Japan.
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Yoshida K, Osuka A. β,β-(1,4-Dithiino)subporphyrin Dimers Capturing Fullerenes with Large Association Constants. Chemistry 2016; 22:9396-403. [PMID: 27238619 DOI: 10.1002/chem.201601152] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2016] [Indexed: 11/07/2022]
Abstract
β,β-(1,4-Dithiino)subporphyrin dimers 7-syn and 7-anti were synthesized by the nucleophilic aromatic substitution reaction of 2-bromo-3-(4-methoxyphenylsulfonyl)subporphyrin 4 with 2,3-dimercaptosubporphyrin 5 under basic conditions followed by axial arylation. Additions of C60 or C70 to a dilute solution of 7-anti (ca. 10(-6) m) in toluene did not cause appreciable UV/Vis spectral changes, while similar additions to a concentrated solution (ca. 10(-3) m) resulted in precipitation of complexes. In contrast, dimer 7-syn captured C60 and C70 in different complexation stoichiometries in toluene; a 1:1 manner and a 2:1 manner, respectively, with large association constants; Ka =(1.9±0.2)×10(6) m(-1) for C60 @7-syn, and K1 =(1.6±0.5)×10(6) and K2 =(1.8±0.9)×10(5) m(-1) for C70 @(7-syn)2 . These association constants are the largest for fullerenes-capture by bowl-shaped molecules reported so far. The structures of C60 @7-anti, C70 @7-anti, C60 @7-syn, and C70 @7-syn have been determined by single-crystal X-ray diffraction analysis.
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Affiliation(s)
- Kota Yoshida
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto, 606-8502, Japan
| | - Atsuhiro Osuka
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto, 606-8502, Japan.
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Kotani R, Yoshida K, Tsurumaki E, Osuka A. Boron Arylations of Subporphyrins with Aryl Zinc Reagents. Chemistry 2016; 22:3320-3326. [DOI: 10.1002/chem.201504719] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2015] [Indexed: 11/09/2022]
Affiliation(s)
- Ryota Kotani
- Department of Chemistry; Graduate School of Science; Kyoto University, Sakyo-ku; Kyoto 606-8502 Japan
| | - Kota Yoshida
- Department of Chemistry; Graduate School of Science; Kyoto University, Sakyo-ku; Kyoto 606-8502 Japan
| | - Eiji Tsurumaki
- Department of Chemistry; Graduate School of Science; Kyoto University, Sakyo-ku; Kyoto 606-8502 Japan
| | - Atsuhiro Osuka
- Department of Chemistry; Graduate School of Science; Kyoto University, Sakyo-ku; Kyoto 606-8502 Japan
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26
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Tsurumaki E, Sung J, Kim D, Osuka A. Stable Boron Peroxides with a Subporphyrinato Ligand. Angew Chem Int Ed Engl 2016; 55:2596-9. [DOI: 10.1002/anie.201511590] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2015] [Indexed: 11/07/2022]
Affiliation(s)
- Eiji Tsurumaki
- Department of Chemistry, Graduate School of Science; Kyoto Univerisity; Sakyo-ku Kyoto 606-8502 Japan
| | - Jooyoung Sung
- Spectroscopy Laboratory for Functional π-Electronic Systems and Department of Chemistry; Yonsei University; Seoul 120-749 Korea
| | - Dongho Kim
- Spectroscopy Laboratory for Functional π-Electronic Systems and Department of Chemistry; Yonsei University; Seoul 120-749 Korea
| | - Atsuhiro Osuka
- Department of Chemistry, Graduate School of Science; Kyoto Univerisity; Sakyo-ku Kyoto 606-8502 Japan
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27
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Tsurumaki E, Sung J, Kim D, Osuka A. Stable Boron Peroxides with a Subporphyrinato Ligand. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201511590] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Eiji Tsurumaki
- Department of Chemistry, Graduate School of Science; Kyoto Univerisity; Sakyo-ku Kyoto 606-8502 Japan
| | - Jooyoung Sung
- Spectroscopy Laboratory for Functional π-Electronic Systems and Department of Chemistry; Yonsei University; Seoul 120-749 Korea
| | - Dongho Kim
- Spectroscopy Laboratory for Functional π-Electronic Systems and Department of Chemistry; Yonsei University; Seoul 120-749 Korea
| | - Atsuhiro Osuka
- Department of Chemistry, Graduate School of Science; Kyoto Univerisity; Sakyo-ku Kyoto 606-8502 Japan
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28
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Copley G, Oh J, Yoshida K, Shimizu D, Kim D, Osuka A. Intramolecular electron transfer reactions in meso-(4-nitrophenyl)-substituted subporphyrins. Chem Commun (Camb) 2016; 52:1424-7. [DOI: 10.1039/c5cc09005a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
A2B-type meso-(4-nitrophenyl)-substituted subporphyrins have been synthesized and shown to undergo very fast photoinduced intramolecular charge separation (CS) and charge recombination (CR) between the subporphyrin core and the meso-4-nitrophenyl group in CH2Cl2 as probed by femtosecond time-resolved transient absorption spectroscopy.
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Affiliation(s)
- Graeme Copley
- Department of Chemistry
- Graduate School of Science
- Kyoto University
- Kyoto 606-8502
- Japan
| | - Juwon Oh
- Department of Chemistry
- Yonsei University
- Seoul 120-749
- Korea
| | - Kota Yoshida
- Department of Chemistry
- Graduate School of Science
- Kyoto University
- Kyoto 606-8502
- Japan
| | - Daiki Shimizu
- Department of Chemistry
- Graduate School of Science
- Kyoto University
- Kyoto 606-8502
- Japan
| | - Dongho Kim
- Department of Chemistry
- Yonsei University
- Seoul 120-749
- Korea
| | - Atsuhiro Osuka
- Department of Chemistry
- Graduate School of Science
- Kyoto University
- Kyoto 606-8502
- Japan
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29
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Kitano M, Okuda Y, Tsurumaki E, Tanaka T, Yorimitsu H, Osuka A. β,β-Diborylated Subporphyrinato Boron(III) Complexes as Useful Synthetic Precursors. Angew Chem Int Ed Engl 2015; 54:9275-9. [DOI: 10.1002/anie.201503530] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2015] [Indexed: 11/07/2022]
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30
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Kitano M, Okuda Y, Tsurumaki E, Tanaka T, Yorimitsu H, Osuka A. β,β-Diborylated Subporphyrinato Boron(III) Complexes as Useful Synthetic Precursors. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201503530] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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31
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Yoshida K, Osuka A. Observation of Diastereomeric Interconversions of β-Sulfinylsubporphyrins as Evidence for Bowl Inversion. Chemistry 2015; 21:11727-34. [PMID: 26095053 DOI: 10.1002/chem.201501546] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2015] [Indexed: 11/08/2022]
Abstract
B-Methoxy β-(4-methoxyphenylsulfinyl)subporphyrin and B-phenyl β-(4-methoxyphenylsulfinyl)subporphyrin were synthesized by oxidation of the corresponding β-sulfanylsubporphyrins with m-chloroperbenzoic acid and were separated into diastereomers, respectively. B-Methoxy subporphyrin diastereomers were interconverted to each other in methanol or ethanol, whereas such interconversion was not observed for B-phenyl subporphyrin diastereomers even at high temperature. Diastereomeric interconversions of B-methoxy subporphyrins were dramatically accelerated by addition of trifluoroacetic acid. These results suggest that the diastereomeric interconversions of B-methoxy subporphyrins, namely, their bowl inversions, proceed via a mechanism involving protonation-induced generation of subporphyrin borenium cations followed by nucleophilic attacks by alcohols.
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Affiliation(s)
- Kota Yoshida
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502 (Japan), Fax: (+81) 75-753-3970
| | - Atsuhiro Osuka
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502 (Japan), Fax: (+81) 75-753-3970.
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32
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Yoshida K, Osuka A. Peripherally Hexasulfanylated Subporphyrins. Chem Asian J 2015; 10:1526-34. [DOI: 10.1002/asia.201500225] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2015] [Indexed: 11/09/2022]
Affiliation(s)
- Kota Yoshida
- Department of Chemistry; Graduate School of Science; Kyoto University; Sakyo-ku, Kyoto 606-8502 Japan
| | - Atsuhiro Osuka
- Department of Chemistry; Graduate School of Science; Kyoto University; Sakyo-ku, Kyoto 606-8502 Japan
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Shimizu D, Oh J, Furukawa K, Kim D, Osuka A. meso-Hydroxysubporphyrins: A Cyclic Trimeric Assembly and a Stable meso-Oxy Radical. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201501592] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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34
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Shimizu D, Oh J, Furukawa K, Kim D, Osuka A. meso-Hydroxysubporphyrins: A Cyclic Trimeric Assembly and a Stable meso-Oxy Radical. Angew Chem Int Ed Engl 2015; 54:6613-7. [DOI: 10.1002/anie.201501592] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2015] [Indexed: 11/12/2022]
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35
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Tsurumaki E, Sung J, Kim D, Osuka A. Subporphyrinato Boron(III) Hydrides. J Am Chem Soc 2015; 137:1056-9. [DOI: 10.1021/ja5126269] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Eiji Tsurumaki
- Department
of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan
| | - Jooyoung Sung
- Spectroscopy
Laboratory for Functional π-Electronic Systems and Department
of Chemistry, Yonsei University, Seoul 120-749, Korea
| | - Dongho Kim
- Spectroscopy
Laboratory for Functional π-Electronic Systems and Department
of Chemistry, Yonsei University, Seoul 120-749, Korea
| | - Atsuhiro Osuka
- Department
of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan
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Chandra B, Sathish Kumar B, Mondal N, Samanta A, Panda PK. Hexaethylsubporphyrins: β-alkyl analogues in the subporphyrin family. Dalton Trans 2015; 44:19966-73. [DOI: 10.1039/c5dt03864b] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Two new subporphyrins were synthesized for the first time from a β-substituted pyrrole i.e. 3,4-diethylpyrrole via pyridine-tri-N-(3,4-diethylpyrrolyl)borane as building blocks.
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Affiliation(s)
- Brijesh Chandra
- School of Chemistry
- University of Hyderabad
- Hyderabad-500046
- India
| | | | - Navendu Mondal
- School of Chemistry
- University of Hyderabad
- Hyderabad-500046
- India
| | - Anunay Samanta
- School of Chemistry
- University of Hyderabad
- Hyderabad-500046
- India
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Yoshida K, Copley G, Mori H, Osuka A. Probing the rotational dynamics of meso-(2-substituted)aryl substituents in A2B-type subporphyrins. Chemistry 2014; 20:10065-72. [PMID: 24976497 DOI: 10.1002/chem.201402778] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2014] [Indexed: 11/08/2022]
Abstract
A2 B-type B-methoxy subporphyrins 3 a-g and B-phenyl subporphyrins 7 a-c,e,g bearing meso-(2-substituted)aryl substituents are synthesized, and their rotational dynamics are examined through variable-temperature (VT) (1) H NMR spectroscopy. In these subporphyrins, the rotation of meso-aryl substituents is hindered by a rationally installed 2-substituent. The rotational barriers determined are considerably smaller than those reported previously for porphyrins. Comparison of the rotation activation parameters reveals a variable contribution of ΔH(≠) and ΔS(≠) in ΔG(≠). 2-Methyl and 2-ethyl groups of the meso-aryl substituents in subporphyrins 3 e, 3 f, and 7 e induce larger rotational barriers than 2-alkoxyl substituents. The rotational barriers of 3 g and 7 g are reduced by the presence of the 4-dibenzylamino group owing to its ability to stabilize the coplanar rotation transition state electronically. The smaller rotational barriers found for B-phenyl subporphyrins than for B-methoxy subporphyrins indicate a negligible contribution of SN 1-type heterolysis in the rotation of meso-aryl substituents.
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Affiliation(s)
- Kota Yoshida
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502 (Japan), Fax: (+81) 75-753-3970
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Yoshida K, Mori H, Tanaka T, Mori T, Osuka A. ABC-Typemeso-Triaryl-Substituted Subporphyrins. European J Org Chem 2014. [DOI: 10.1002/ejoc.201402435] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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