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Yoshida T, Honda Y, Morofuji T, Kano N. Transition-Metal-Free O-Arylation of Alcohols and Phenols with S-Arylphenothiaziniums. J Org Chem 2022; 87:7565-7573. [PMID: 35578794 DOI: 10.1021/acs.joc.2c00771] [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
Herein, we report the transition-metal-free O-arylation of alcohols and phenols with S-arylphenothiaziniums, which can be easily synthesized from boronic acids. Aryl substituents derived from arylboronic acids were selectively introduced into the hydroxy groups in alcohols and phenols, and a variety of aryl ethers were synthesized. This selectivity is supported by theoretical calculations.
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Affiliation(s)
- Tatsuki Yoshida
- Department of Chemistry, Faculty of Science, Gakushuin University, 1-5-1 Mejiro, Toshima-ku, Tokyo 171-8588, Japan
| | - Yuki Honda
- Department of Chemistry, Faculty of Science, Gakushuin University, 1-5-1 Mejiro, Toshima-ku, Tokyo 171-8588, Japan
| | - Tatsuya Morofuji
- Department of Chemistry, Faculty of Science, Gakushuin University, 1-5-1 Mejiro, Toshima-ku, Tokyo 171-8588, Japan
| | - Naokazu Kano
- Department of Chemistry, Faculty of Science, Gakushuin University, 1-5-1 Mejiro, Toshima-ku, Tokyo 171-8588, Japan
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2
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Tan Y, Wang J, Zhang HY, Zhang Y, Zhao J. The C3-H Bond Functionalization of Quinoxalin-2(1 H)-Ones With Hypervalent Iodine(III) Reagents. Front Chem 2020; 8:582. [PMID: 32850624 PMCID: PMC7432307 DOI: 10.3389/fchem.2020.00582] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Accepted: 06/05/2020] [Indexed: 12/19/2022] Open
Abstract
The modification of quinoxalin-2(1H)-ones via direct C-H bond functionalization has begun to receive widespread attention, due to quinoxalin-2(1H)-one derivatives' various biological activities and pharmaceutical properties. This mini review concentrates on the accomplishments of arylation, trifluoromethylation, alkylation, and alkoxylation of quinoxalin-2(1H)-ones with hypervalent iodine(III) reagents as reaction partners or oxidants. The reaction conditions and mechanisms are compared and discussed in detail.
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Affiliation(s)
- Yushi Tan
- Tianjin Key Laboratory of Chemical Process Safety, Hebei Provincial Key Laboratory of Green Chemical Technology & High Efficient Energy Saving, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin, China
| | - Jiabo Wang
- Tianjin Key Laboratory of Chemical Process Safety, Hebei Provincial Key Laboratory of Green Chemical Technology & High Efficient Energy Saving, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin, China
| | - Hong-Yu Zhang
- Tianjin Key Laboratory of Chemical Process Safety, Hebei Provincial Key Laboratory of Green Chemical Technology & High Efficient Energy Saving, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin, China
| | - Yuecheng Zhang
- Tianjin Key Laboratory of Chemical Process Safety, Hebei Provincial Key Laboratory of Green Chemical Technology & High Efficient Energy Saving, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin, China
| | - Jiquan Zhao
- Tianjin Key Laboratory of Chemical Process Safety, Hebei Provincial Key Laboratory of Green Chemical Technology & High Efficient Energy Saving, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin, China
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Sreenithya A, Sunoj RB. On the activation of hypercoordinate iodine(iii) compounds for reactions of current interest. Dalton Trans 2019; 48:4086-4093. [PMID: 30860253 DOI: 10.1039/c9dt00472f] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Central to the reactivity of hypercoordinate iodine as a continually emerging compound for organic transformation is its activation by various additives. We wish to present the current understanding on bonding and activation modes under different reaction conditions involving hypercoordinate iodine(iii) compounds.
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Affiliation(s)
- A Sreenithya
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India.
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Ni J, Jiang Y, An Z, Lan J, Yan R. A convenient access to allylic triflones with allenes and triflyl chloride in the presence of (EtO)2P(O)H. Chem Commun (Camb) 2019; 55:7343-7345. [PMID: 31169835 DOI: 10.1039/c9cc03096d] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
A simple method for the preparation of allylic triflones from allenes and triflyl chloride in the presence of (EtO)2P(O)H has been developed.
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Affiliation(s)
- Jixiang Ni
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou
- People's Republic of China
| | - Yong Jiang
- School of Chemistry and Chemical Engineering
- Yangtze Normal University
- Chongqing
- China
| | - Zhenyu An
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou
- People's Republic of China
| | - Jingfeng Lan
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou
- People's Republic of China
| | - Rulong Yan
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou
- People's Republic of China
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Das P, Tokunaga E, Akiyama H, Doi H, Saito N, Shibata N. Synthesis of fluoro-functionalized diaryl-λ 3-iodonium salts and their cytotoxicity against human lymphoma U937 cells. Beilstein J Org Chem 2018; 14:364-372. [PMID: 29507641 PMCID: PMC5815272 DOI: 10.3762/bjoc.14.24] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2017] [Accepted: 01/24/2018] [Indexed: 12/24/2022] Open
Abstract
Conscious of the potential bioactivity of fluorine, an investigation was conducted using various fluorine-containing diaryliodonium salts in order to study and compare their biological activity against human lymphoma U937 cells. Most of the compounds tested are well-known reagents for fluoro-functionalized arylation reactions in synthetic organic chemistry, but their biological properties are not fully understood. Herein, after initially investigating 18 fluoro-functionalized reagents, we discovered that the ortho-fluoro-functionalized diaryliodonium salt reagents showed remarkable cytotoxicity in vitro. These results led us to synthesize more compounds, previously unknown sterically demanding diaryliodonium salts having a pentafluorosulfanyl (SF5) functional group at the ortho-position, that is, unsymmetrical ortho-SF5 phenylaryl-λ3-iodonium salts. Newly synthesized mesityl(2-(pentafluoro-λ6-sulfanyl)phenyl)iodonium exhibited the greatest potency in vitro against U937 cells. Evaluation of the cytotoxicity of selected phenylaryl-λ3-iodonium salts against AGLCL (a normal human B cell line) was also examined.
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Affiliation(s)
- Prajwalita Das
- Department of Nanopharmaceutical Sciences, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya 466-8555, Japan
| | - Etsuko Tokunaga
- Department of Nanopharmaceutical Sciences, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya 466-8555, Japan
| | - Hidehiko Akiyama
- Faculty of Medical Technology, Fujita Health University, 1-98 Dengakugakubo, Kutsukake-cho, Toyoake, 470-1192, Japan
| | - Hiroki Doi
- Faculty of Medical Technology, Fujita Health University, 1-98 Dengakugakubo, Kutsukake-cho, Toyoake, 470-1192, Japan
| | - Norimichi Saito
- Pharmaceutical Division, Ube Industries, Ltd. Seavans North Bldg., 1-2-1 Shibaura, Minato-ku, Tokyo 105-8449, Japan
| | - Norio Shibata
- Department of Nanopharmaceutical Sciences, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya 466-8555, Japan.,Institute of Advanced Fluorine-Containing Materials, Zhejiang Normal University, 688 Yingbin Avenue, 321004 Jinhua, China
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Das P, Gondo S, Tokunaga E, Sumii Y, Shibata N. Anionic Triflyldiazomethane: Generation and Its Application for Synthesis of Pyrazole-3-triflones via [3 + 2] Cycloaddition Reaction. Org Lett 2018; 20:558-561. [PMID: 29320193 DOI: 10.1021/acs.orglett.7b03664] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The synthesis of pyrazole triflones containing a triflyl group at the 3-position is disclosed. Treatment of 2-diazo-1-phenyl-2-((trifluoromethyl)sulfonyl)ethan-1-one with nitroalkenes under basic conditions gave pharmaceutically attractive pyrazole 3-triflones in good to high yields. The generation of anionic triflyldiazomethane species followed by the [3 + 2] cycloaddition reaction with nitroalkenes is proposed for this transformation. 3-(Difluoromethanesulfonyl)pyrazoles were also synthesized by using a previously unknown anionic (difluoromethanesulfonyl)diazomethane species under a similar strategy.
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Affiliation(s)
- Pulakesh Das
- Department of Nanopharmaceutical Sciences, Department of Life Science and Applied Chemistry, Nagoya Institute of Technology , Gokiso-cho, Showa-ku Nagoya 466-8555, Japan
| | - Satoshi Gondo
- Department of Nanopharmaceutical Sciences, Department of Life Science and Applied Chemistry, Nagoya Institute of Technology , Gokiso-cho, Showa-ku Nagoya 466-8555, Japan
| | - Etsuko Tokunaga
- Department of Nanopharmaceutical Sciences, Department of Life Science and Applied Chemistry, Nagoya Institute of Technology , Gokiso-cho, Showa-ku Nagoya 466-8555, Japan
| | - Yuji Sumii
- Department of Nanopharmaceutical Sciences, Department of Life Science and Applied Chemistry, Nagoya Institute of Technology , Gokiso-cho, Showa-ku Nagoya 466-8555, Japan
| | - Norio Shibata
- Department of Nanopharmaceutical Sciences, Department of Life Science and Applied Chemistry, Nagoya Institute of Technology , Gokiso-cho, Showa-ku Nagoya 466-8555, Japan.,Institute of Advanced Fluorine-Containing Materials, Zhejiang Normal University , 688 Yingbin Avenue, 321004 Jinhua, China
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Sumii Y, Sugita Y, Tokunaga E, Shibata N. Synthesis of Aryl Triflones through the Trifluoromethanesulfonylation of Benzynes. ChemistryOpen 2018; 7:204-211. [PMID: 29497592 PMCID: PMC5827650 DOI: 10.1002/open.201700204] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2017] [Indexed: 11/05/2022] Open
Abstract
The direct synthesis of aryl triflones, that is, trifluoromethanesulfonyl arenes, was achieved through the trifluoromethanesulfonylation of benzynes. The trifluoromethanesulfonyl group, one of the fluorinated functional groups, is a highly electron-negative and mild lipophilic substituent. Aryl triflones have high potential in the synthesis of bioactive compounds and specialty materials. The treatment of 2-(trimethylsilyl)aryl trifluoromethanesulfonates with cesium fluoride in the presence of 15-crown-5 generated benzynes, which reacted with sodium trifluoromethanesulfinate followed by protonation with tBuOH under heating conditions, provided aryl triflones in moderated to good yields. Both symmetrical and unsymmetrical triflones were nicely accessed under the same reaction conditions. Interestingly, the trifluoromethanesulfonylation of unsymmetrical benzyne precursors proceeded smoothly to furnish corresponding aryl triflones in good yields with good to high regioselectivities. The balance of polarization of electric charge as well as steric hindrance of the benzyne intermediates are central factors to control the outcome of regioselectivity.
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Affiliation(s)
- Yuji Sumii
- Department of Nanopharmaceutical Sciences and Department of Life Science and Applied ChemistryNagoya Institute of TechnologyGokiso-cho, Showa-kuNagoya466–8555Japan
| | - Yutaka Sugita
- Department of Nanopharmaceutical Sciences and Department of Life Science and Applied ChemistryNagoya Institute of TechnologyGokiso-cho, Showa-kuNagoya466–8555Japan
| | - Etsuko Tokunaga
- Department of Nanopharmaceutical Sciences and Department of Life Science and Applied ChemistryNagoya Institute of TechnologyGokiso-cho, Showa-kuNagoya466–8555Japan
| | - Norio Shibata
- Department of Nanopharmaceutical Sciences and Department of Life Science and Applied ChemistryNagoya Institute of TechnologyGokiso-cho, Showa-kuNagoya466–8555Japan
- Institute of Advanced Fluorine-Containing MaterialsZhejiang Normal University688 Yingbin Avenue321004JinhuaChina
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Almendros P, Yanai H, Hoshikawa S, Aragoncillo C, Lázaro-Milla C, Toledano-Pinedo M, Matsumoto T, Alcaide B. Transition metal-free controlled synthesis of bis[(trifluoromethyl)sulfonyl]ethyl-decorated heterocycles. Org Chem Front 2018. [DOI: 10.1039/c8qo00955d] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
The metal- and irradiation-free C–H bis(triflyl)ethylation reactions of a variety of heterocycles including marketed drugs have been accomplished.
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Affiliation(s)
- Pedro Almendros
- Instituto de Química Orgánica General
- Consejo Superior de Investigaciones Científicas
- IQOG-CSIC
- 28006 Madrid
- Spain
| | - Hikaru Yanai
- School of Pharmacy
- Tokyo University of Pharmacy and Life Sciences
- Tokyo 192-0392
- Japan
| | - Shoki Hoshikawa
- School of Pharmacy
- Tokyo University of Pharmacy and Life Sciences
- Tokyo 192-0392
- Japan
| | - Cristina Aragoncillo
- Grupo de Lactamas y Heterociclos Bioactivos
- Departamento de Química Orgánica I
- Unidad Asociada al CSIC
- Facultad de Química
- Universidad Complutense de Madrid
| | - Carlos Lázaro-Milla
- Grupo de Lactamas y Heterociclos Bioactivos
- Departamento de Química Orgánica I
- Unidad Asociada al CSIC
- Facultad de Química
- Universidad Complutense de Madrid
| | - Mireia Toledano-Pinedo
- Grupo de Lactamas y Heterociclos Bioactivos
- Departamento de Química Orgánica I
- Unidad Asociada al CSIC
- Facultad de Química
- Universidad Complutense de Madrid
| | - Takashi Matsumoto
- School of Pharmacy
- Tokyo University of Pharmacy and Life Sciences
- Tokyo 192-0392
- Japan
| | - Benito Alcaide
- Grupo de Lactamas y Heterociclos Bioactivos
- Departamento de Química Orgánica I
- Unidad Asociada al CSIC
- Facultad de Química
- Universidad Complutense de Madrid
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