1
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Wu Q, Ren M, Zhou Z, Xu Y, Chen Y. Photoinduced Metal-Free Radical Addition/Cyclization of 2-Cyanoaryl Acrylamides to Prepare gem-Difluorinated Naphthyridinone Scaffolds. J Org Chem 2024; 89:10831-10843. [PMID: 38991973 DOI: 10.1021/acs.joc.4c01112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/13/2024]
Abstract
Direct construction of gem-difluorinated heterocycles represents a long-standing challenge in organic chemistry. Herein, we developed a transition-metal-free photocatalytic radical addition/cyclization of BrCF2COR with 2-cyanoaryl acrylamides to give gem-difluorinated naphthyridinone scaffolds in moderate to good yields. Furthermore, some natural products were found to be suitable in the reaction system. The easily available substrates, mild reaction conditions, simple operation, and wide functionality tolerance show practical and environmental advantages in this method.
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Affiliation(s)
- Qiaoyan Wu
- Guangxi Engineering Research Center for Pharmaceutical Molecular Screening and Druggability Evaluation, College of Pharmacy, Guangxi Key Laboratory of Diabetic Systems Medicine, Guilin Medical University, Guilin 541004, People's Republic of China
| | - Meilin Ren
- Guangxi Engineering Research Center for Pharmaceutical Molecular Screening and Druggability Evaluation, College of Pharmacy, Guangxi Key Laboratory of Diabetic Systems Medicine, Guilin Medical University, Guilin 541004, People's Republic of China
| | - Zhike Zhou
- Guangxi Engineering Research Center for Pharmaceutical Molecular Screening and Druggability Evaluation, College of Pharmacy, Guangxi Key Laboratory of Diabetic Systems Medicine, Guilin Medical University, Guilin 541004, People's Republic of China
| | - Yanli Xu
- Guangxi Engineering Research Center for Pharmaceutical Molecular Screening and Druggability Evaluation, College of Pharmacy, Guangxi Key Laboratory of Diabetic Systems Medicine, Guilin Medical University, Guilin 541004, People's Republic of China
| | - Yanyan Chen
- Guangxi Engineering Research Center for Pharmaceutical Molecular Screening and Druggability Evaluation, College of Pharmacy, Guangxi Key Laboratory of Diabetic Systems Medicine, Guilin Medical University, Guilin 541004, People's Republic of China
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2
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Sawada N, Yu Z, Takinami H, Inoue D, Ghosh T, Sasaki N, Nokami T, Taniguchi T, Abe M, Koike T. Organophotocatalytic access to C-glycosides: multicomponent coupling reactions using glycosyl bromides. Chem Commun (Camb) 2024. [PMID: 39034774 DOI: 10.1039/d4cc02833c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/23/2024]
Abstract
Photochemical multi-component coupling reactions initiated by the activation of glycosyl bromides in the presence of 1,4-bis(diphenylamino)benzene (BDB) as an organic photocatalyst were developed. C-glycosides accompanied by olefin (di)functionalization were obtained. This method allows us to access various C-glycosides with alkene, carbonyl, alcohol, ether, and amide functionalities.
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Affiliation(s)
- Naoya Sawada
- Department of Chemistry and Biotechnology, Tottori University, 4-101 Koyamacho minami, Tottori city, 680-8552 Tottori, Japan
| | - Ziyi Yu
- Department of Chemistry and Biotechnology, Tottori University, 4-101 Koyamacho minami, Tottori city, 680-8552 Tottori, Japan
| | - Hiryu Takinami
- Department of Chemistry and Biotechnology, Tottori University, 4-101 Koyamacho minami, Tottori city, 680-8552 Tottori, Japan
| | - Daichi Inoue
- Department of Chemistry and Biotechnology, Tottori University, 4-101 Koyamacho minami, Tottori city, 680-8552 Tottori, Japan
| | - Titli Ghosh
- Department of Chemistry and Biotechnology, Tottori University, 4-101 Koyamacho minami, Tottori city, 680-8552 Tottori, Japan
| | - Norihiko Sasaki
- Department of Chemistry and Biotechnology, Tottori University, 4-101 Koyamacho minami, Tottori city, 680-8552 Tottori, Japan
- Centre for Research on Green Sustainable Chemistry, Faculty of Engineering, Tottori University, 4-101 Koyamacho minami, Tottori city, 680-8552 Tottori, Japan
| | - Toshiki Nokami
- Department of Chemistry and Biotechnology, Tottori University, 4-101 Koyamacho minami, Tottori city, 680-8552 Tottori, Japan
- Centre for Research on Green Sustainable Chemistry, Faculty of Engineering, Tottori University, 4-101 Koyamacho minami, Tottori city, 680-8552 Tottori, Japan
| | - Tsuyoshi Taniguchi
- Interdisciplinary Research Center for Catalytic Chemistry, National Institute of Advanced Industrial Science and Technology, 1-1-1 Higashi, Tsukuba city, Ibaraki, 305-8565, Japan
| | - Manabu Abe
- Department of Chemistry, Graduate School of Advanced Science and Engineering, Hiroshima University, Higashi-Hiroshima city, Hiroshima, 739-8526, Japan
| | - Takashi Koike
- Department of Applied Chemistry, Faculty of Fundamental Engineering, Nippon Institute of Technology, E24-315, 4-1 Gakuendai, Miyashiro-Machi, Minamisaitama-Gun, 345-8501 Saitama, Japan
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3
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Merkhatuly N, Iskanderov A, Abeuova S, Iskanderov A, Zhokizhanova S. Introduction of Electron Donor Groups into the Azulene Structure: The Appearance of Intense Absorption and Emission in the Visible Region. Molecules 2024; 29:3354. [PMID: 39064932 PMCID: PMC11279626 DOI: 10.3390/molecules29143354] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2024] [Revised: 07/12/2024] [Accepted: 07/15/2024] [Indexed: 07/28/2024] Open
Abstract
In this work, through the Suzuki-Miyaura cross-coupling reaction with high yields, new π-conjugated azulene compounds containing diphenylaniline groups at positions 2 and 6 of azulene were synthesized. The obtained diphenylaniline-azulenes have intensely visible-light absorbing and emitting (in the wavelength range from 400 to 600 nm) properties. It has been shown that such unique optical properties, in particular fluorescent emission in the region of blue and green photoluminescence (λem at 495 and 525 nm), which were absent in the original azulene, are the result of the electron donor effect of diphenylaniline groups, which significantly changes the electronic structure of azulene and leads to the allowed HOMO → LUMO electron transition.
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Affiliation(s)
- Nurlan Merkhatuly
- Department of Inorganic and Technical Chemistry, Karaganda Buketov University, Karaganda 100028, Kazakhstan;
| | - Ablaykhan Iskanderov
- Department of Inorganic and Technical Chemistry, Karaganda Buketov University, Karaganda 100028, Kazakhstan;
| | - Saltanat Abeuova
- Graduate School of Science, Astana International University, Astana 020000, Kazakhstan;
| | - Amantay Iskanderov
- Department of Inorganic and Technical Chemistry, Karaganda Buketov University, Karaganda 100028, Kazakhstan;
| | - Saltanat Zhokizhanova
- Department of Physics and Chemistry, Saken Seifullin Kazakh Agro Technical Research University, Astana 010000, Kazakhstan;
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4
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Zhao Y, Zhang Y, Huang Y. Enantioselective Relay Coupling of Perfluoroalkyl and Vinylogous Ketyl Radicals. Angew Chem Int Ed Engl 2024:e202409566. [PMID: 38865105 DOI: 10.1002/anie.202409566] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2024] [Revised: 06/12/2024] [Accepted: 06/12/2024] [Indexed: 06/13/2024]
Abstract
β-Chiral carboxylic acids and their derivatives are highly valuable structural motifs in the fields of asymmetric synthesis and medicinal chemistry. However, the introduction of a sterically demanding sidechain to the β-carbon, such as an all-carbon quaternary center, remains a significant challenge in classical polar processes. Recently, N-heterocyclic carbene (NHC) mediated coupling reactions involving persistent ketyl radicals have emerged as a promising strategy to assemble highly crowded carbon-carbon bonds. Nevertheless, achieving enantioselectivity in these reactions remains highly challenging. In this work, we report our recent progress in controlling enantioselectivity for relay coupling of perfluoroalkyl and persistent vinylogous ketyl radicals. We developed a chiral bifunctional NHC-squaramide catalyst that achieves high facial selectivity in a critical bond-forming event involving the coupling of a congested tertiary carbon radical and vinylogous ketyl radical. Chiral carboxylates bearing an all-carbon quaternary center at the β-position can be prepared in good yield and excellent enantiomeric excess. Results from density functional theory (DFT) calculations and nuclear Overhauser effect (NOE) experiments indicate that the N,N'-diaryl squaramide motif adopts an unusual syn-syn conformation, enabling hydrogen bonding interactions with the enolate oxygen, thereby rigidifying the overall conformation of the transition state.
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Affiliation(s)
- Yuxin Zhao
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, China
| | - Yichi Zhang
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, China
| | - Yong Huang
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, China
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5
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Tian S, Chen N, Cheng K, Wang Q. Radical Acylfluoroalkylation of 1,3-Enynes via N-Heterocyclic Carbene/Photoredox Cooperative Catalysis. Org Lett 2024; 26:4351-4355. [PMID: 38726978 DOI: 10.1021/acs.orglett.4c01372] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/25/2024]
Abstract
We report a novel three-component radical acylfluoroalkylation of 1,3-enynes by synergistic N-heterocyclic carbene (NHC)/photoredox catalysis toward various fluorinated allenic aryl ketones. This protocol features a broad substrate scope and excellent functional group tolerability, with examples of late-stage modification of drug molecules and natural products. Notably, seven different fluoroalkyl motifs can be introduced to 1,3-enynes, further demonstrating the robustness and generality of this method. The generation of the fluoroalkyl radical from each sulfinate reagent was individually supported by EPR experiments.
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Affiliation(s)
- Shichao Tian
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China), Collaborative Innovation Center for Guangxi Ethnic Medicine, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin, Guangxi 541004, P. R. China
| | - Ning Chen
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China), Collaborative Innovation Center for Guangxi Ethnic Medicine, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin, Guangxi 541004, P. R. China
| | - Keguang Cheng
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China), Collaborative Innovation Center for Guangxi Ethnic Medicine, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin, Guangxi 541004, P. R. China
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing, Jiangsu 211198, P. R. China
| | - Quande Wang
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China), Collaborative Innovation Center for Guangxi Ethnic Medicine, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin, Guangxi 541004, P. R. China
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6
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Xia J, Guo Y, Lv Z, Sun J, Zheng G, Zhang Q. Visible Light-Mediated Monofluoromethylation/Acylation of Olefins by Dual Organo-Catalysis. Molecules 2024; 29:790. [PMID: 38398543 PMCID: PMC10892033 DOI: 10.3390/molecules29040790] [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: 12/31/2023] [Revised: 02/01/2024] [Accepted: 02/06/2024] [Indexed: 02/25/2024] Open
Abstract
Monofluoromethyl (CH2F) motifs exhibit unique bioactivities and are considered privileged units in drug discovery. The radical monofluoromethylative difunctionalization of alkenes stands out as an appealing approach to access CH2F-containing compounds. However, this strategy remains largely underdeveloped, particularly under metal-free conditions. In this study, we report on visible light-mediated three-component monofluoromethylation/acylation of styrene derivatives employing NHC and organic photocatalyst dual catalysis. A diverse array of α-aryl-β-monofluoromethyl ketones was successfully synthesized with excellent functional group tolerance and selectivity. The mild and metal-free CH2F radical generation strategy from NaSO2CFH2 holds potential for further applications in fluoroalkyl radical chemistry.
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Affiliation(s)
- Jiuli Xia
- Key Laboratory of Functional Organic Molecule Design & Synthesis of Jilin Province, Department of Chemistry, Northeast Normal University, Changchun 130024, China; (J.X.); (Z.L.); (Q.Z.)
| | - Yunliang Guo
- School of Environment, Northeast Normal University, Changchun 130117, China;
| | - Zhiguang Lv
- Key Laboratory of Functional Organic Molecule Design & Synthesis of Jilin Province, Department of Chemistry, Northeast Normal University, Changchun 130024, China; (J.X.); (Z.L.); (Q.Z.)
| | - Jiaqiong Sun
- School of Environment, Northeast Normal University, Changchun 130117, China;
| | - Guangfan Zheng
- Key Laboratory of Functional Organic Molecule Design & Synthesis of Jilin Province, Department of Chemistry, Northeast Normal University, Changchun 130024, China; (J.X.); (Z.L.); (Q.Z.)
| | - Qian Zhang
- Key Laboratory of Functional Organic Molecule Design & Synthesis of Jilin Province, Department of Chemistry, Northeast Normal University, Changchun 130024, China; (J.X.); (Z.L.); (Q.Z.)
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
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7
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Wei Z, Zheng W, Wan X, Hu J. Copper-Catalyzed Enantioselective Difluoromethylation-Alkynylation of Olefins by Solving the Dilemma between Acidities and Reduction Potentials of Difluoromethylating Agents. Angew Chem Int Ed Engl 2023; 62:e202308816. [PMID: 37466977 DOI: 10.1002/anie.202308816] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Revised: 07/18/2023] [Accepted: 07/19/2023] [Indexed: 07/20/2023]
Abstract
Molecules containing a difluoromethyl group or a propargylic stereocenter are widely used in pharmaceuticals and agrochemicals, and 1,2-functionalization of olefins is an important method for introducing the two groups into molecules simultaneously. The construction of the propargylic stereocenter with terminal alkynes usually requires bases. However, difluoromethylating agents with high reduction potentials often decompose in the presence of bases because of their acidities, and those with low reduction potentials are stable but difficult to undergo the desired single electron transfer (SET) reduction. Using the linear relationship between reduction potential differences (ΔE) and Hammett substituent constants (σ) of difluoromethyl aryl sulfones, we solved the dilemma between acidities and reduction potentials of difluoromethylating agents. Herein, we report the first enantioselective difluoromethylation-alkynylation of olefins with difluoromethyl 4-chlorophenyl sulfone with high enantioselectivity (>90 % ee). We also extended this asymmetric fluoroalkylation-alkynylation reaction with other fluoroalkyl sulfones, which enabled efficient installation of trifluoromethyl, difluoroalkyl, difluorobenzyl, (benzenesulfonyl)-difluoromethyl and monofluoromethyl groups into products.
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Affiliation(s)
- Zhiqiang Wei
- Key Laboratory of Organofluorine Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Ling-Ling Road, Shanghai, 200032, China
- School of Physical Science and Technology, ShanghaiTech University, 100 Haike Road, Shanghai, 201210, China
| | - Weiqin Zheng
- Key Laboratory of Organofluorine Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Ling-Ling Road, Shanghai, 200032, China
| | - Xiaolong Wan
- Key Laboratory of Organofluorine Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Ling-Ling Road, Shanghai, 200032, China
| | - Jinbo Hu
- Key Laboratory of Organofluorine Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Ling-Ling Road, Shanghai, 200032, China
- School of Physical Science and Technology, ShanghaiTech University, 100 Haike Road, Shanghai, 201210, China
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8
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Koike T. Fluoroalkyl Sulfoximines for Versatile Photocatalytic Radical Fluoroalkylations. CHEM REC 2023; 23:e202300032. [PMID: 36942940 DOI: 10.1002/tcr.202300032] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2023] [Revised: 03/01/2023] [Indexed: 03/23/2023]
Abstract
Fluoroalkyl sulfoximines, which serve as electron-accepting fluoroalkyl radical sources, are easy-to-handle, solid, and bench-stable chemicals. Fluoroalkyl radicals can be generated from sulfoximine reagents using strong one-electron injectors, such as a highly reducing photoredox catalyst in the excited state. Our group has developed photocatalytic radical di- and mono-fluoromethylation and α-monofluoroalkylation of olefins with the corresponding fluoroalkyl sulfoximines. In this personal account, appropriate combinations of fluoroalkyl sulfoximines and photoredox catalysts, leading to successful radical fluoroalkylation, have been discussed.
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Affiliation(s)
- Takashi Koike
- Department of Applied Chemistry, Faculty of Fundamental Engineering Nippon Institute of Technology E24-315, 4-1 Gakuendai, Miyashiro-Machi, Minamisaitama-gun, Saitama, 345-8501, Japan
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9
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Lin D, Coe M, Krishnamurti V, Ispizua-Rodriguez X, Surya Prakash GK. Recent Advances in Visible Light-Mediated Radical Fluoro-alkylation, -alkoxylation, -alkylthiolation, -alkylselenolation, and -alkylamination. CHEM REC 2023; 23:e202300104. [PMID: 37212421 DOI: 10.1002/tcr.202300104] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Revised: 04/20/2023] [Indexed: 05/23/2023]
Abstract
In the last few years, many reagents and protocols have been developed to allow for the efficient fluorofunctionalization of a diverse set of scaffolds ranging from alkanes, alkenes, alkynes, and (hetero)arenes. The concomitant rise of organofluorine chemistry and visible light-mediated synthesis have synergistically expanded the fields and have mutually benefitted from developments in both fields. In this context, visible light driven formations of radicals containing fluorine have been a major focus for the discovery of new bioactive compounds. This review details the recent advances and progress made in visible light-mediated fluoroalkylation and heteroatom centered radical generation.
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Affiliation(s)
- Daniel Lin
- Loker Hydrocarbon Research Institute Department of Chemistry, University of Southern California, 837 Bloom Walk, 90089-1661, Los Angeles, CA, USA
| | - Matthew Coe
- Loker Hydrocarbon Research Institute Department of Chemistry, University of Southern California, 837 Bloom Walk, 90089-1661, Los Angeles, CA, USA
| | - Vinayak Krishnamurti
- Loker Hydrocarbon Research Institute Department of Chemistry, University of Southern California, 837 Bloom Walk, 90089-1661, Los Angeles, CA, USA
| | - Xanath Ispizua-Rodriguez
- Loker Hydrocarbon Research Institute Department of Chemistry, University of Southern California, 837 Bloom Walk, 90089-1661, Los Angeles, CA, USA
| | - G K Surya Prakash
- Loker Hydrocarbon Research Institute Department of Chemistry, University of Southern California, 837 Bloom Walk, 90089-1661, Los Angeles, CA, USA
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10
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Tsuchiya T, Hamano T, Inoue M, Nakamura T, Wakamiya A, Mazaki Y. Intense absorption of azulene realized by molecular orbital inversion. Chem Commun (Camb) 2023; 59:10604-10607. [PMID: 37528776 DOI: 10.1039/d3cc02311g] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/03/2023]
Abstract
The introduction of diarylamino groups at the 2- and 6-positions of azulene was found to invert the order of the orbital energy levels and allowed the HOMO-LUMO transition, resulting in a substantial increase in absorbance in the visible region. In addition, the stability of their one-electron oxidised species was improved by introducing bromine or methoxy groups at the 1- and 3-positions.
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Affiliation(s)
- Takahiro Tsuchiya
- Department of Chemistry, Kitasato University Kitasato 1-15-1, Sagamihara, Kanagawa 252-0373, Japan.
| | - Tomohiro Hamano
- Department of Chemistry, Kitasato University Kitasato 1-15-1, Sagamihara, Kanagawa 252-0373, Japan.
| | - Masahiro Inoue
- Department of Chemistry, Kitasato University Kitasato 1-15-1, Sagamihara, Kanagawa 252-0373, Japan.
| | - Tomoya Nakamura
- Institute for Chemical Research, Kyoto University Uji, Kyoto 611-0011, Japan
| | - Atsushi Wakamiya
- Institute for Chemical Research, Kyoto University Uji, Kyoto 611-0011, Japan
| | - Yasuhiro Mazaki
- Department of Chemistry, Kitasato University Kitasato 1-15-1, Sagamihara, Kanagawa 252-0373, Japan.
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11
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Sheng W, Huang X, Cai J, Zheng Y, Wen Y, Song C, Li J. Electrochemical Oxidation Enables Regioselective 1,3-Hydroxyfunctionalization of Cyclopropanes. Org Lett 2023; 25:6178-6183. [PMID: 37584476 DOI: 10.1021/acs.orglett.3c02309] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/17/2023]
Abstract
The direct construction of 1,3-hydroxyfunctionalized molecules is still a significant challenge, as they can currently be obtained through multiple synthetic steps. Herein, we report a general and efficient 1,3-hydroxyfunctionalization of arylcyclopropanes by electrochemical oxidation with a strategic choice of nucleophiles and H2O. 1,3-Amino alcohols, 1,3-alkynyl alcohols, 1,3-hydroxyesters, and 1,3-halo alcohols are achieved with high levels of chemo- and regio-selectivity, opening a new dimension for 1,3-difunctionalization reaction.
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Affiliation(s)
- Wei Sheng
- College of Chemistry and Chemical Engineering, State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha 410082, China
| | - Xuejin Huang
- College of Chemistry and Chemical Engineering, State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha 410082, China
| | - Jianhua Cai
- College of Chemistry and Chemical Engineering, State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha 410082, China
| | - Ye Zheng
- College of Chemistry and Chemical Engineering, State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha 410082, China
| | - Yuxi Wen
- College of Chemistry and Chemical Engineering, State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha 410082, China
| | - Chunlan Song
- College of Chemistry and Chemical Engineering, State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha 410082, China
| | - Jiakun Li
- College of Chemistry and Chemical Engineering, State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha 410082, China
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12
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Shirakawa E, Ota Y, Yonekura K, Okura K, Mizusawa S, Sarkar SK, Abe M. Manipulation of an electron by photoirradiation in the electron-catalyzed cross-coupling reaction. SCIENCE ADVANCES 2023; 9:eadh3544. [PMID: 37256951 PMCID: PMC10413655 DOI: 10.1126/sciadv.adh3544] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2023] [Accepted: 04/26/2023] [Indexed: 06/02/2023]
Abstract
An electron has recently been shown to catalyze the cross-coupling reaction of organometallic compounds with aryl halides. In terms of green and sustainable chemistry, the electron catalysis is much more desirable than the inevitably used transition metal catalysis but a high temperature of more than 100°C is required to achieve it. Here, we disclose that visible light photoirradiation accelerates the electron-catalyzed reaction of arylzinc reagents with aryl halides with the aid of a photoredox catalysis. Photoexcitation of a photoredox catalyst and an anion radical intermediate respectively affects the supply and transfer of the electron catalyst, promoting the cross-coupling reaction to proceed at room temperature. The supply of the electron catalyst by the photoredox catalysis makes the scope of aryl halides wider.
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Affiliation(s)
- Eiji Shirakawa
- Department of Applied Chemistry for Environment, School of Biological and Environmental Sciences, Kwansei Gakuin University, Sanda, Hyogo 669-1337, Japan
| | - Yuki Ota
- Department of Applied Chemistry for Environment, School of Biological and Environmental Sciences, Kwansei Gakuin University, Sanda, Hyogo 669-1337, Japan
| | - Kyohei Yonekura
- Department of Applied Chemistry for Environment, School of Biological and Environmental Sciences, Kwansei Gakuin University, Sanda, Hyogo 669-1337, Japan
| | - Keisho Okura
- Department of Applied Chemistry for Environment, School of Biological and Environmental Sciences, Kwansei Gakuin University, Sanda, Hyogo 669-1337, Japan
| | - Sahiro Mizusawa
- Department of Applied Chemistry for Environment, School of Biological and Environmental Sciences, Kwansei Gakuin University, Sanda, Hyogo 669-1337, Japan
- Fine Materials Department, Osaka Gas Chemicals, Co., Ltd., Konohana-ku, Osaka, 554-0051, Japan
| | - Sujan Kumar Sarkar
- Department of Chemistry, Graduate School of Advanced Science and Engineering, Hiroshima University, Higashihiroshima, Hiroshima 739-8526, Japan
- Advanced Patterning Department, Interuniversity Microelectronics Centre (IMEC), Leuven 3001, Belgium
| | - Manabu Abe
- Department of Chemistry, Graduate School of Advanced Science and Engineering, Hiroshima University, Higashihiroshima, Hiroshima 739-8526, Japan
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13
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Ramkumar N, Baumane L, Zacs D, Veliks J. Merging Copper(I) Photoredox Catalysis and Iodine(III) Chemistry for the Oxy-monofluoromethylation of Alkenes. Angew Chem Int Ed Engl 2023; 62:e202219027. [PMID: 36692216 DOI: 10.1002/anie.202219027] [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: 12/23/2022] [Revised: 01/23/2023] [Accepted: 01/24/2023] [Indexed: 01/25/2023]
Abstract
A simple process for the oxy-monofluoromethylation of alkenes is described. In combination with visible-light copper(I) photoredox catalysis, an easily accessible iodine(III) reagent containing monofluoroacetoxy ligands serves as a powerful source of a monofluoromethyl (CH2 F) radical, enabling the step economical synthesis of γ-fluoro-acetates from a broad range of olefinic substrates under mild conditions. Applications to late-stage diversification of alkenes derived from complex molecules, amino acids and the synthesis of fluoromethylated heterocycles are also demonstrated.
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Affiliation(s)
- Nagarajan Ramkumar
- Latvian Institute of Organic Synthesis, Aizkraukles iela 21, LV-1006, Riga, Latvia
| | - Larisa Baumane
- Latvian Institute of Organic Synthesis, Aizkraukles iela 21, LV-1006, Riga, Latvia
| | - Dzintars Zacs
- Institute of Food Safety, Animal Health and Environment "BIOR", Lejupes iela 3, LV-1076, Riga, Latvia
| | - Janis Veliks
- Latvian Institute of Organic Synthesis, Aizkraukles iela 21, LV-1006, Riga, Latvia
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14
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Noto N, Yada A, Yanai T, Saito S. Machine-Learning Classification for the Prediction of Catalytic Activity of Organic Photosensitizers in the Nickel(II)-Salt-Induced Synthesis of Phenols. Angew Chem Int Ed Engl 2023; 62:e202219107. [PMID: 36645619 DOI: 10.1002/anie.202219107] [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: 12/25/2022] [Revised: 01/15/2023] [Accepted: 01/16/2023] [Indexed: 01/17/2023]
Abstract
Catalytic systems using a small amount of organic photosensitizer for the activation of an inorganic (on-demand ligand-free) nickel(II) salt represent a cost-effective method for cross-coupling reactions, while C(sp2 )-O bond formation remains less developed. Herein, we report a strategy for the synthesis of phenols with a nickel(II) salt and an organic photosensitizer, which was identified via an investigation into the catalytic activity of 60 organic photosensitizers consisting of various electron donor and acceptor moieties. To examine the effect of multiple intractable parameters on the catalytic activity of photosensitizers, machine-learning (ML) models were developed, wherein we embedded descriptors representing their physical and structural properties, which were obtained from DFT calculations and RDKit, respectively. The study clarified that integrating both DFT- and RDKit-derived descriptors in ML models balances higher "precision" and "recall" across a wide range of search space relative to using only one of the two descriptor sets.
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Affiliation(s)
- Naoki Noto
- Integrated Research Consortium on Chemical Sciences (IRCCS), Nagoya University, Nagoya, Aichi, 464-8602, Japan
| | - Akira Yada
- Interdisciplinary Research Center for Catalytic Chemistry, National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Higashi, Tsukuba, Ibaraki, 305-8565, Japan
| | - Takeshi Yanai
- Institute of Transformative Bio-Molecules (WPI-ITbM) and Graduate School of Science, Nagoya University, Nagoya, Aichi, 464-8602, Japan
| | - Susumu Saito
- Integrated Research Consortium on Chemical Sciences (IRCCS) and Graduate School of Science, Nagoya University, Nagoya, Aichi, 464-8602, Japan
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15
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Hu CC, Tong CL, Zhang YY, Xu XH, Qing FL. Photoredox-Catalyzed and Silane-Mediated Hydrofluoromethylation of Unactivated Alkenes with Fluoroiodomethane in Water. Org Lett 2023; 25:1035-1039. [PMID: 36749173 DOI: 10.1021/acs.orglett.3c00260] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
The first hydrofluoromethylation of unactivated alkenes with fluoroiodomethane and hydrosilanes is developed by merging photoredox catalysis and silane-mediated deiodination processes. The key to the success of this reaction is the use of water as the solvent to enhance the activity of CH2F radical toward unactivated alkenes.
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Affiliation(s)
- Chen-Chen Hu
- Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Science, Chinese Academy of Science, 345 Lingling Lu, Shanghai 200032, China
| | - Chao-Lai Tong
- Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Science, Chinese Academy of Science, 345 Lingling Lu, Shanghai 200032, China
| | - Yu-Yang Zhang
- Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Science, Chinese Academy of Science, 345 Lingling Lu, Shanghai 200032, China
| | - Xiu-Hua Xu
- Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Science, Chinese Academy of Science, 345 Lingling Lu, Shanghai 200032, China
| | - Feng-Ling Qing
- Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Science, Chinese Academy of Science, 345 Lingling Lu, Shanghai 200032, China
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16
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Shen ZJ, Zhu C, Zhang X, Yang C, Rueping M, Guo L, Xia W. Organoboron Reagent-Controlled Selective (Deutero)Hydrodefluorination. Angew Chem Int Ed Engl 2023; 62:e202217244. [PMID: 36525004 DOI: 10.1002/anie.202217244] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Revised: 12/15/2022] [Accepted: 12/16/2022] [Indexed: 12/23/2022]
Abstract
(Deuterium-labeled) CF2 H- and CFH2 -moieties are of high interest in drug discovery. The high demand for the incorporation of these fluoroalkyl moieties into molecular structures has witnessed significant synthetic progress, particularly in the (deutero)hydrodefluorination of CF3 -containing compounds. However, the controllable replacement of fluorine atoms while maintaining high chemoselectivity remains challenging. Herein, we describe the development of a selective (deutero)hydrodefluorination reaction via electrolysis. The reaction exhibits a remarkable chemoselectivity control, which is enabled by the addition of different organoboron sources. The procedure is operationally simple and scalable, and provides access in one step to high-value building blocks for application in medicinal chemistry. Furthermore, density functional theory (DFT) calculations have been carried out to investigate the reaction mechanism and to rationalize the chemoselectivity observed.
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Affiliation(s)
- Zheng-Jia Shen
- State Key Lab of Urban Water Resource and Environment, School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen, 518055, China
| | - Chen Zhu
- KAUST Catalysis Center (KCC), King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
| | - Xiao Zhang
- State Key Lab of Urban Water Resource and Environment, School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen, 518055, China
| | - Chao Yang
- State Key Lab of Urban Water Resource and Environment, School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen, 518055, China
| | - Magnus Rueping
- KAUST Catalysis Center (KCC), King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
| | - Lin Guo
- State Key Lab of Urban Water Resource and Environment, School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen, 518055, China
| | - Wujiong Xia
- State Key Lab of Urban Water Resource and Environment, School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen, 518055, China.,School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan, 453007, China
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17
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Briand M, Thai LD, Bourdreux F, Vanthuyne N, Moreau X, Magnier E, Anselmi E, Dagousset G. Remote Radical Trifluoromethylation: A Unified Approach to the Selective Synthesis of γ-Trifluoromethyl α,β-Unsaturated Carbonyl Compounds. Org Lett 2022; 24:9375-9380. [PMID: 36534949 DOI: 10.1021/acs.orglett.2c03676] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Site-selective trifluoromethylation of silyl dienol ethers derived from α,β-unsaturated aldehydes, ketones, and amides was achieved for the first time in the remote γ position. This photoredox catalyzed process is quite general to compounds bearing many functionalities and is applicable to the late-stage functionalization of biorelevant molecules. The use of S-perfluoroalkyl sulfoximines as ·RF radical sources enables the generalization of the reaction to other perfluoroalkyl groups (RF = CF2H, C4F9). Importantly, an unprecedented enantioselective C(sp3)-H perfluoroalkylation process is disclosed.
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Affiliation(s)
- Marina Briand
- Université Paris-Saclay, UVSQ, CNRS, UMR 8180 Institut Lavoisier de Versailles, 78035 Versailles Cedex, France
| | - Linh D Thai
- Université Paris-Saclay, UVSQ, CNRS, UMR 8180 Institut Lavoisier de Versailles, 78035 Versailles Cedex, France
| | - Flavien Bourdreux
- Université Paris-Saclay, UVSQ, CNRS, UMR 8180 Institut Lavoisier de Versailles, 78035 Versailles Cedex, France
| | - Nicolas Vanthuyne
- Institut des Sciences Moléculaires de Marseille, Centrale Marseille, UMR 7313, Aix-Marseille Université, CNRS, Avenue Escadrille Normandie Niemen, 13013 Marseille Cedex, France
| | - Xavier Moreau
- Université Paris-Saclay, UVSQ, CNRS, UMR 8180 Institut Lavoisier de Versailles, 78035 Versailles Cedex, France
| | - Emmanuel Magnier
- Université Paris-Saclay, UVSQ, CNRS, UMR 8180 Institut Lavoisier de Versailles, 78035 Versailles Cedex, France
| | - Elsa Anselmi
- Université Paris-Saclay, UVSQ, CNRS, UMR 8180 Institut Lavoisier de Versailles, 78035 Versailles Cedex, France.,Université de Tours, Faculté des Sciences et Techniques, 37200 Tours, France
| | - Guillaume Dagousset
- Université Paris-Saclay, UVSQ, CNRS, UMR 8180 Institut Lavoisier de Versailles, 78035 Versailles Cedex, France
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18
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Noto N, Saito S. Arylamines as More Strongly Reducing Organic Photoredox Catalysts than fac-[Ir(ppy) 3]. ACS Catal 2022. [DOI: 10.1021/acscatal.2c05034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
Affiliation(s)
- Naoki Noto
- Integrated Research Consortium on Chemical Sciences (IRCCS), Nagoya University, Chikusa, Nagoya, Aichi 464-8602, Japan
| | - Susumu Saito
- Integrated Research Consortium on Chemical Sciences (IRCCS), Nagoya University, Chikusa, Nagoya, Aichi 464-8602, Japan
- Graduate School of Science, Nagoya University, Chikusa, Nagoya, Aichi 464-8602, Japan
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19
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Colella M, Musci P, Andresini M, Spennacchio M, Degennaro L, Luisi R. The synthetic versatility of fluoroiodomethane: recent applications as monofluoromethylation platform. Org Biomol Chem 2022; 20:4669-4680. [PMID: 35587647 DOI: 10.1039/d2ob00670g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
In recent years, fluoroiodomethane (CH2FI) has emerged as an easy-to-handle, non-ozone depleting agent and readily available platform for monofluoromethylation strategies. Recent applications in nucleophilic substitutions, lithiation reactions, transition-metal catalyzed transformations, radical processes, and 18F-radiolabelling chemistry showcase the potential of this reagent for the preparation of organofluorine compounds. In this minireview, we provide an update to the field covering the recent relevant literature on the use of CH2FI.
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Affiliation(s)
- Marco Colella
- FLAME-Lab, Flow Chemistry and Microreactor Technology Laboratory, Department of Pharmacy - Drug Sciences, University of Bari "A. Moro" Via E. Orabona 4, 70125 Bari, Italy.
| | - Pantaleo Musci
- FLAME-Lab, Flow Chemistry and Microreactor Technology Laboratory, Department of Pharmacy - Drug Sciences, University of Bari "A. Moro" Via E. Orabona 4, 70125 Bari, Italy.
| | - Michael Andresini
- FLAME-Lab, Flow Chemistry and Microreactor Technology Laboratory, Department of Pharmacy - Drug Sciences, University of Bari "A. Moro" Via E. Orabona 4, 70125 Bari, Italy.
| | - Mauro Spennacchio
- FLAME-Lab, Flow Chemistry and Microreactor Technology Laboratory, Department of Pharmacy - Drug Sciences, University of Bari "A. Moro" Via E. Orabona 4, 70125 Bari, Italy.
| | - Leonardo Degennaro
- FLAME-Lab, Flow Chemistry and Microreactor Technology Laboratory, Department of Pharmacy - Drug Sciences, University of Bari "A. Moro" Via E. Orabona 4, 70125 Bari, Italy.
| | - Renzo Luisi
- FLAME-Lab, Flow Chemistry and Microreactor Technology Laboratory, Department of Pharmacy - Drug Sciences, University of Bari "A. Moro" Via E. Orabona 4, 70125 Bari, Italy.
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20
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Ni SX, Li YL, Ni HQ, Bi YX, Sheng J, Wang XS. Nickel-catalyzed hydromonofluoromethylation of unactivated alkenes for expedient construction of primary alkyl fluorides. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2022.06.037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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21
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Wang L, Zhang Y, Zhu T, Wu J. Difluoromethylarylation of Alkynes from [Bis(difluoroacetoxy)iodo]benzene: Access to CF 2H-Containing Dibenzazepines. J Org Chem 2022; 87:7551-7556. [PMID: 35549257 DOI: 10.1021/acs.joc.2c00584] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A photoinduced radical difluoromethylarylation via tandem addition-cyclization of alkynes with easily available [bis(difluoroacetoxy)iodo]benzene is accomplished, providing a straightforward and practical route for the construction of difluoromethylated dibenzazepines. Various sensitive functional groups can be compatible under photoinduced conditions. Mechanism investigation reveals that this transformation is initiated by the addition of alkyne with difluoromethyl radical, generated in situ from [bis(difluoroacetoxy)iodo]benzene.
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Affiliation(s)
- Luoyu Wang
- School of Pharmaceutical and Materials Engineering & Institute for Advanced Studies, Taizhou University, 1139 Shifu Avenue, Taizhou 318000, China
| | - Yan Zhang
- School of Pharmaceutical and Materials Engineering & Institute for Advanced Studies, Taizhou University, 1139 Shifu Avenue, Taizhou 318000, China
| | - Tonghao Zhu
- School of Pharmaceutical and Materials Engineering & Institute for Advanced Studies, Taizhou University, 1139 Shifu Avenue, Taizhou 318000, China
| | - Jie Wu
- School of Pharmaceutical and Materials Engineering & Institute for Advanced Studies, Taizhou University, 1139 Shifu Avenue, Taizhou 318000, China.,State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China.,School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, China
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22
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Gao F, Zhang S, Lv Q, Yu B. Recent advances in graphene oxide catalyzed organic transformations. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2021.10.081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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23
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Padma Priya V, Natarajan K, Nandi GC. Advances in the photoredox catalysis of S(VI) compounds. Tetrahedron 2022. [DOI: 10.1016/j.tet.2022.132711] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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24
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Dai P, Li Y, Chen Y, Jiao J, Wang Q, Li C, Gu Y, Zhang Y, Xia Q, Zhang WH. (Fluoromethylsulfonyl)methylation of Quinoxalinones Using NaSO2CH2F for C–F Bond Cleavage. Org Lett 2022; 24:1357-1361. [DOI: 10.1021/acs.orglett.2c00048] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Peng Dai
- Jiangsu Key Laboratory of Pesticide Science, College of Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Yufei Li
- Jiangsu Key Laboratory of Pesticide Science, College of Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Yu Chen
- Jiangsu Key Laboratory of Pesticide Science, College of Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Jian Jiao
- Jiangsu Key Laboratory of Pesticide Science, College of Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Qingqing Wang
- Jiangsu Key Laboratory of Pesticide Science, College of Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Chenxiao Li
- Jiangsu Key Laboratory of Pesticide Science, College of Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Yucheng Gu
- Syngenta Jealott’s Hill International Research Centre, Bracknell RG42 6EY, U.K
| | - Yanbin Zhang
- Department of Chemistry, National University of Singapore, 117545 Singapore
| | - Qing Xia
- Jiangsu Key Laboratory of Pesticide Science, College of Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Wei-Hua Zhang
- Jiangsu Key Laboratory of Pesticide Science, College of Sciences, Nanjing Agricultural University, Nanjing 210095, China
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25
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Liang RB, Zhu CM, Song PQ, Zhao LM, Tong QX, Zhong JJ. External oxidant-free and selective thiofunctionalization of alkenes enabled by photoredox-neutral catalysis. Org Chem Front 2022. [DOI: 10.1039/d2qo00957a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A photoredox approach was reported to realize a highly selective three-component thiohydroxylation, thioalkoxylation and thioamination of vinylarenes towards valuable vicinal S,O- and S,N-disubstituted molecules under mild conditions.
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Affiliation(s)
- Rong-Bin Liang
- Department of Chemistry and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province, Shantou University, and Chemistry and Chemical Engineering Guangdong Laboratory, Shantou, Guangdong 515063, P. R. China
| | - Can-Ming Zhu
- Department of Chemistry and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province, Shantou University, and Chemistry and Chemical Engineering Guangdong Laboratory, Shantou, Guangdong 515063, P. R. China
| | - Pei-Qi Song
- Department of Chemistry and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province, Shantou University, and Chemistry and Chemical Engineering Guangdong Laboratory, Shantou, Guangdong 515063, P. R. China
| | - Lei-Min Zhao
- Department of Chemistry, Southern University of Science and Technology (SUSTech), Shenzhen, Guangdong 518055, P. R. China
| | - Qing-Xiao Tong
- Department of Chemistry and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province, Shantou University, and Chemistry and Chemical Engineering Guangdong Laboratory, Shantou, Guangdong 515063, P. R. China
| | - Jian-Ji Zhong
- Department of Chemistry and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province, Shantou University, and Chemistry and Chemical Engineering Guangdong Laboratory, Shantou, Guangdong 515063, P. R. China
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26
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Ramani A, Desai B, Dholakiya BZ, Naveen T. Recent advances in visible-light mediated functionalization of olefins and alkynes using copper catalysts. Chem Commun (Camb) 2022; 58:7850-7873. [DOI: 10.1039/d2cc01611g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Over the past decade, visible-light photoredox catalysis has blossomed as a powerful strategy and offers a discrete activation mode complementary to thermal controlled reactions. Visible-light-mediated photoredox catalysis also offers exciting...
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27
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Liu Q, Lu Y, Sheng H, Zhang C, Su X, Wang Z, Chen X. Visible‐Light‐Induced Selective Photolysis of Phosphonium Iodide Salts for Monofluoromethylations. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202111006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Qiang Liu
- School of Chemical Sciences University of Chinese Academy of Sciences Beijing 100049 China
| | - Yu Lu
- School of Chemical Sciences University of Chinese Academy of Sciences Beijing 100049 China
| | - He Sheng
- School of Chemical Sciences University of Chinese Academy of Sciences Beijing 100049 China
| | - Chao‐Shen Zhang
- School of Chemical Sciences University of Chinese Academy of Sciences Beijing 100049 China
| | - Xiao‐Di Su
- School of Chemical Sciences University of Chinese Academy of Sciences Beijing 100049 China
| | - Zhi‐Xiang Wang
- School of Chemical Sciences University of Chinese Academy of Sciences Beijing 100049 China
| | - Xiang‐Yu Chen
- School of Chemical Sciences University of Chinese Academy of Sciences Beijing 100049 China
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28
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Chu XQ, Ge D, Cui YY, Shen ZL, Li CJ. Desulfonylation via Radical Process: Recent Developments in Organic Synthesis. Chem Rev 2021; 121:12548-12680. [PMID: 34387465 DOI: 10.1021/acs.chemrev.1c00084] [Citation(s) in RCA: 88] [Impact Index Per Article: 29.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
As the "chemical chameleon", sulfonyl-containing compounds and their variants have been merged with various types of reactions for the efficient construction of diverse molecular architectures by taking advantage of their incredible reactive flexibility. Currently, their involvement in radical transformations, in which the sulfonyl group typically acts as a leaving group via selective C-S, N-S, O-S, S-S, and Se-S bond cleavage/functionalization, has facilitated new bond formation strategies which are complementary to classical two-electron cross-couplings via organometallic or ionic intermediates. Considering the great influence and synthetic potential of these novel avenues, we summarize recent advances in this rapidly expanding area by discussing the reaction designs, substrate scopes, mechanistic studies, and their limitations, outlining the state-of-the-art processes involved in radical-mediated desulfonylation and related transformations. With a specific emphasis on their synthetic applications, we believe this review will be useful for medicinal and synthetic organic chemists who are interested in radical chemistry and radical-mediated desulfonylation in particular.
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Affiliation(s)
- Xue-Qiang Chu
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Danhua Ge
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Yan-Ying Cui
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Zhi-Liang Shen
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Chao-Jun Li
- Department of Chemistry and FQRNT Centre for Green Chemistry and Catalysis, McGill University, Montreal, Quebec H3A 0B8, Canada
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29
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Deneny PJ, Kumar R, Gaunt MJ. Visible light-mediated radical fluoromethylation via halogen atom transfer activation of fluoroiodomethane. Chem Sci 2021; 12:12812-12818. [PMID: 34703568 PMCID: PMC8494037 DOI: 10.1039/d1sc04554g] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Accepted: 08/30/2021] [Indexed: 11/21/2022] Open
Abstract
Incorporation of the fluoromethyl group can profoundly influence the physicochemical properties of organic molecules, offering a promising strategy for the discovery of novel pharmaceutical agents. Direct fluoromethylation of unfunctionalized C(sp2) centres can be achieved using fluoromethyl radicals, but current methods for their generation usually rely on the activation of non-commercial or expensive radical precursors via inefficient single electron transfer pathways, which limits their synthetic application. Here we report the development of a fluoromethylation strategy based on the generation of fluoromethyl radicals from commercially available fluoroiodomethane via halogen atom transfer. This mode of activation is orchestrated by visible light and tris(trimethylsilyl)silane, which serves as both a hydrogen- and halogen atom transfer reagent to facilitate the formation of C(sp3)-CH2F bonds via a radical chain process. The utility of this metal- and photocatalyst-free transformation is demonstrated through the multicomponent synthesis of complex α-fluoromethyl amines and amino acid derivatives via radical addition to in situ-formed iminium ions, and the construction of β-fluoromethyl esters and amides from electron-deficient alkene acceptors. These complex fluoromethylated products, many of which are inaccessible via previously reported methods, may serve as useful building blocks or fragments in synthetic and medicinal chemistry both in academia and industry.
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Affiliation(s)
- Patrick J Deneny
- Yusuf Hamied Department of Chemistry, University of Cambridge Lensfield Road Cambridge CB2 1EW UK
| | - Roopender Kumar
- Yusuf Hamied Department of Chemistry, University of Cambridge Lensfield Road Cambridge CB2 1EW UK
| | - Matthew J Gaunt
- Yusuf Hamied Department of Chemistry, University of Cambridge Lensfield Road Cambridge CB2 1EW UK
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30
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Hell SM, Meyer CF, Ortalli S, Sap JBI, Chen X, Gouverneur V. Hydrofluoromethylation of alkenes with fluoroiodomethane and beyond. Chem Sci 2021; 12:12149-12155. [PMID: 34667580 PMCID: PMC8457377 DOI: 10.1039/d1sc03421a] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Accepted: 08/07/2021] [Indexed: 01/02/2023] Open
Abstract
A process for the direct hydrofluoromethylation of alkenes is reported for the first time. This straighforward silyl radical-mediated reaction utilises CH2FI as a non-ozone depleting reagent, traditionally used in electrophilic, nucleophilic and carbene-type chemistry, but not as a CH2F radical source. By circumventing the challenges associated with the high reduction potential of CH2FI being closer to CH3I than CF3I, and harnessing instead the favourable bond dissociation energy of the C–I bond, we demonstrate that feedstock electron-deficient alkenes are converted into products resulting from net hydrofluoromethylation with the intervention of (Me3Si)3SiH under blue LED activation. This deceptively simple yet powerful methodology was extended to a range of (halo)methyl radical precursors including ICH2I, ICH2Br, ICH2Cl, and CHBr2F, as well as CH3I itself; this latter reagent therefore enables direct hydromethylation. This versatile chemistry was applied to 18F-, 13C-, and D-labelled reagents as well as complex biologically relevant alkenes, providing facile access to more than fifty products for applications in medicinal chemistry and positron emission tomography. Herein, we report the direct hydro(halo)methylation of alkenes from a variety of (halo)methyl iodides (including F-18, C-13, D-2 isotopologues), enabling the incorporation of a plethora of C-1 fragments into complex biologically active molecules.![]()
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Affiliation(s)
- Sandrine M Hell
- University of Oxford, Chemistry Research Laboratory 12 Mansfield Road Oxford OX1 3TA UK
| | - Claudio F Meyer
- University of Oxford, Chemistry Research Laboratory 12 Mansfield Road Oxford OX1 3TA UK
| | - Sebastiano Ortalli
- University of Oxford, Chemistry Research Laboratory 12 Mansfield Road Oxford OX1 3TA UK
| | - Jeroen B I Sap
- University of Oxford, Chemistry Research Laboratory 12 Mansfield Road Oxford OX1 3TA UK
| | - Xuanxiao Chen
- University of Oxford, Chemistry Research Laboratory 12 Mansfield Road Oxford OX1 3TA UK
| | - Véronique Gouverneur
- University of Oxford, Chemistry Research Laboratory 12 Mansfield Road Oxford OX1 3TA UK
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31
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Liu Q, Lu Y, Sheng H, Zhang CS, Su XD, Wang ZX, Chen XY. Visible-Light-Induced Selective Photolysis of Phosphonium Iodide Salts for Monofluoromethylations. Angew Chem Int Ed Engl 2021; 60:25477-25484. [PMID: 34490742 DOI: 10.1002/anie.202111006] [Citation(s) in RCA: 41] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Indexed: 11/09/2022]
Abstract
The sigma (σ)-hole effect has emerged as a promising tool to construct novel architectures endowed with new properties. A simple yet effective strategy for the generation of monofluoromethyl radicals is a continuing challenge within the synthetic community. Fluoromethylphosphonium salts are easily available, air- and thermally stable, as well as simple-to-handle. Herein, we report the ability of the σ-hole effect to facilitate the visible-light-triggered photolysis of phosphonium iodide salts, a charge-transfer complex, selectively giving fluoromethyl radicals. The usefulness and versatility of this new protocol are demonstrated through the mono-, di-, and trifluoromethylation of a variety of alkenes.
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Affiliation(s)
- Qiang Liu
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yu Lu
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - He Sheng
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Chao-Shen Zhang
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Xiao-Di Su
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Zhi-Xiang Wang
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Xiang-Yu Chen
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China
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Toriumi N, Yamashita K, Iwasawa N. Metal-Free Photoredox-Catalyzed Hydrodefluorination of Fluoroarenes Utilizing Amide Solvent as Reductant. Chemistry 2021; 27:12635-12641. [PMID: 34190366 DOI: 10.1002/chem.202101813] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2021] [Indexed: 12/15/2022]
Abstract
A metal-free photoredox-catalyzed hydrodefluorination of fluoroarenes was achieved by using N,N,N',N'-tetramethyl-para-phenylenediamine (1) as a strong photoreduction catalyst. This reaction was applicable not only to electron-rich monofluoroarenes but also to polyfluoroarenes to afford non-fluorinated arenes. The experimental mechanistic studies indicated that the amide solvent NMP plays an important role for regeneration of the photocatalyst, enabling additive-free photoreduction catalysis.
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Affiliation(s)
- Naoyuki Toriumi
- Department of Chemistry, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo, 152-8551, Japan
| | - Kazuya Yamashita
- Department of Chemistry, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo, 152-8551, Japan
| | - Nobuharu Iwasawa
- Department of Chemistry, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo, 152-8551, Japan
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33
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Gao QS, Niu Z, Chen Y, Sun J, Han WY, Wang JY, Yu M, Zhou MD. Photoredox Generation of N-Centered Hydrazonyl Radicals Enables the Construction of Dihydropyrazole-Fused gem-Difluoroalkenes. Org Lett 2021; 23:6153-6157. [PMID: 34269587 DOI: 10.1021/acs.orglett.1c02275] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
An efficient visible-light-promoted N-radical-mediated tandem radical cyclization/defluorinated alkylation of β,γ-unsaturated hydrazones, and α-trifluoromethyl alkenes is described. This protocol provides a general and effective route to synthesize various dihydropyrazole-fused gem-difluoroalkenes at moderate to excellent yields under redox-neutral, metal-free, and mild conditions.
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Affiliation(s)
- Qi-Sheng Gao
- School of Petrochemical Engineering, Liaoning Petrochemical University, Fushun 113001, China
| | - Zhuo Niu
- Department of Surgical Oncology and General Surgery, The First Hospital of China Medical University; Key Laboratory of Precision Diagnosis and Treatment of Gastrointestinal Tumors (China Medical University), Ministry of Education, Shenyang 110001, China
| | - Yang Chen
- School of Petrochemical Engineering, Liaoning Petrochemical University, Fushun 113001, China
| | - Jing Sun
- School of Petrochemical Engineering, Liaoning Petrochemical University, Fushun 113001, China
| | - Wei-Ying Han
- Department of Surgical Oncology and General Surgery, The First Hospital of China Medical University; Key Laboratory of Precision Diagnosis and Treatment of Gastrointestinal Tumors (China Medical University), Ministry of Education, Shenyang 110001, China
| | - Jing-Yun Wang
- School of Petrochemical Engineering, Liaoning Petrochemical University, Fushun 113001, China
| | - Miao Yu
- Department of Surgical Oncology and General Surgery, The First Hospital of China Medical University; Key Laboratory of Precision Diagnosis and Treatment of Gastrointestinal Tumors (China Medical University), Ministry of Education, Shenyang 110001, China
| | - Ming-Dong Zhou
- School of Petrochemical Engineering, Liaoning Petrochemical University, Fushun 113001, China
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34
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Organophotocatalytic selective deuterodehalogenation of aryl or alkyl chlorides. Nat Commun 2021; 12:2894. [PMID: 34001911 PMCID: PMC8129137 DOI: 10.1038/s41467-021-23255-0] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Accepted: 03/30/2021] [Indexed: 12/23/2022] Open
Abstract
Development of practical deuteration reactions is highly valuable for organic synthesis, analytic chemistry and pharmaceutic chemistry. Deuterodehalogenation of organic chlorides tends to be an attractive strategy but remains a challenging task. We here develop a photocatalytic system consisting of an aryl-amine photocatalyst and a disulfide co-catalyst in the presence of sodium formate as an electron and hydrogen donor. Accordingly, many aryl chlorides, alkyl chlorides, and other halides are converted to deuterated products at room temperature in air (>90 examples, up to 99% D-incorporation). The mechanistic studies reveal that the aryl amine serves as reducing photoredox catalyst to initiate cleavage of the C-Cl bond, at the same time as energy transfer catalyst to induce homolysis of the disulfide for consequent deuterium transfer process. This economic and environmentally-friendly method can be used for site-selective D-labeling of a number of bioactive molecules and direct H/D exchange of some drug molecules. Deuterodehalogenation of organic chlorides is a useful strategy to install deuterium atoms at specific positions, however, it has several drawbacks. In this study, the authors report an organophotocatalytic system consisting of an aryl-amine-based photocatalyst and a common disulfide co-catalyst, for efficient deuteration of a wide range of aryl chlorides, alkyl chlorides and other halides, at room temperature in air.
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35
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36
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Zheng Y, Xie ZZ, He XC, Chen YS, Cheng WS, Chen K, Xiang HY, Chen XQ, Yang H. Phosphonium Ylide-Mediated Programmable Fluorination to Access Mono- and Difluoromethylarenes. Org Lett 2021; 23:2538-2542. [DOI: 10.1021/acs.orglett.1c00457] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yu Zheng
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China
| | - Zhen-Zhen Xie
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China
| | - Xian-Chen He
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China
| | - Yan-Shan Chen
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China
| | - Wen-Shuo Cheng
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China
| | - Kai Chen
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China
| | - Hao-Yue Xiang
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China
| | - Xiao-Qing Chen
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China
| | - Hua Yang
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China
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37
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Taniguchi R, Noto N, Tanaka S, Takahashi K, Sarkar SK, Oyama R, Abe M, Koike T, Akita M. Simple generation of various α-monofluoroalkyl radicals by organic photoredox catalysis: modular synthesis of β-monofluoroketones. Chem Commun (Camb) 2021; 57:2609-2612. [PMID: 33630980 DOI: 10.1039/d0cc08060h] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
A metal-free and operationally simple strategy for the generation of various α-monofluoroalkyl radicals has been developed. A combination of 1,4-bis(diarylamino)naphthalene photocatalyst and sulfoximine-based fluoroalkylating reagents is the key to success. The protocol can be applied to modular synthesis of β-monofluoroketones through radical monofluoroalkylation of alkenyl acetates.
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Affiliation(s)
- Ryo Taniguchi
- School of Materials and Chemical Technology, Tokyo Institute of Technology, R1-27, 4259 Nagatsuta-cho, Midori-ku, Yokohama 226-8503, Japan
| | - Naoki Noto
- School of Materials and Chemical Technology, Tokyo Institute of Technology, R1-27, 4259 Nagatsuta-cho, Midori-ku, Yokohama 226-8503, Japan
| | - Seiya Tanaka
- School of Materials and Chemical Technology, Tokyo Institute of Technology, R1-27, 4259 Nagatsuta-cho, Midori-ku, Yokohama 226-8503, Japan
| | - Keigo Takahashi
- School of Materials and Chemical Technology, Tokyo Institute of Technology, R1-27, 4259 Nagatsuta-cho, Midori-ku, Yokohama 226-8503, Japan
| | - Sujan K Sarkar
- Department of Chemistry, Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8526, Japan
| | - Ryoko Oyama
- Department of Chemistry, Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8526, Japan
| | - Manabu Abe
- Department of Chemistry, Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8526, Japan
| | - Takashi Koike
- School of Materials and Chemical Technology, Tokyo Institute of Technology, R1-27, 4259 Nagatsuta-cho, Midori-ku, Yokohama 226-8503, Japan and Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, Japan.
| | - Munetaka Akita
- School of Materials and Chemical Technology, Tokyo Institute of Technology, R1-27, 4259 Nagatsuta-cho, Midori-ku, Yokohama 226-8503, Japan and Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, Japan.
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38
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Teets TS, Wu Y, Kim D. Photophysical Properties and Redox Potentials of Photosensitizers for Organic Photoredox Transformations. Synlett 2021. [DOI: 10.1055/a-1390-9065] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
AbstractPhotoredox catalysis has proven to be a powerful tool in synthetic organic chemistry. The rational design of photosensitizers with improved photocatalytic performance constitutes a major advancement in photoredox organic transformations. This review summarizes the fundamental ground-state and excited-state photophysical and electrochemical attributes of molecular photosensitizers, which are important determinants of their photocatalytic reactivity.
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39
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Hu CC, Hu WQ, Xu XH, Qing FL. 2-Position-selective C H fluoromethylation of six-membered heteroaryl N-oxides with (fluoromethyl)triphenylphosphonium iodide. J Fluor Chem 2021. [DOI: 10.1016/j.jfluchem.2020.109695] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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40
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Zhao Y, Zhang Y, Liu Y, Zhu T, Wu J. Photoredox-catalyzed direct C(sp 2)–H difluoromethylation of enamides or heterocycles with [bis(difluoroacetoxy)iodo]benzene. Org Chem Front 2021. [DOI: 10.1039/d1qo00995h] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A photoredox-catalyzed direct C(sp2)–H difluoromethylation of enamides and heterocycles is accomplished by using easily accessible [bis(difluoroacetoxy)iodo]benzene as the CF2H source.
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Affiliation(s)
- Yun Zhao
- School of Pharmaceutical and Materials Engineering & Institute for Advanced Studies, Taizhou University, 1139 Shifu Avenue, Taizhou 318000, China
| | - Yan Zhang
- School of Pharmaceutical and Materials Engineering & Institute for Advanced Studies, Taizhou University, 1139 Shifu Avenue, Taizhou 318000, China
| | - Yating Liu
- School of Pharmaceutical and Materials Engineering & Institute for Advanced Studies, Taizhou University, 1139 Shifu Avenue, Taizhou 318000, China
| | - Tonghao Zhu
- School of Pharmaceutical and Materials Engineering & Institute for Advanced Studies, Taizhou University, 1139 Shifu Avenue, Taizhou 318000, China
| | - Jie Wu
- School of Pharmaceutical and Materials Engineering & Institute for Advanced Studies, Taizhou University, 1139 Shifu Avenue, Taizhou 318000, China
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, China
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41
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Hosseini-Sarvari M, Valikhani A. Boron-doped TiO 2 (B-TiO 2): visible-light photocatalytic difunctionalization of alkenes and alkynes. NEW J CHEM 2021. [DOI: 10.1039/d1nj01752g] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Boron-doped TiO2 (B-TiO2) was prepared, characterized, and applied as a reusable, inexpensive, and available heterogeneous nanophotocatalyst under visible light for the synthesis of phenacyl thiocyanates.
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Affiliation(s)
- Mona Hosseini-Sarvari
- Department of Chemistry
- Nano Photocatalysis Lab
- Shiraz University
- Shiraz 7194684795
- Iran
| | - Atefe Valikhani
- Department of Chemistry
- Nano Photocatalysis Lab
- Shiraz University
- Shiraz 7194684795
- Iran
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42
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Liu Y, Chen XL, Li XY, Zhu SS, Li SJ, Song Y, Qu LB, Yu B. 4CzIPN-tBu-Catalyzed Proton-Coupled Electron Transfer for Photosynthesis of Phosphorylated N-Heteroaromatics. J Am Chem Soc 2020; 143:964-972. [DOI: 10.1021/jacs.0c11138] [Citation(s) in RCA: 74] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Yan Liu
- College of Chemistry, Green Catalysis Centre, Zhengzhou University, Zhengzhou, Henan Province 450001, China
- College of Biological and Pharmaceutical Engineering, Xinyang Agriculture & Forestry University, Xinyang 464000, China
| | - Xiao-Lan Chen
- College of Chemistry, Green Catalysis Centre, Zhengzhou University, Zhengzhou, Henan Province 450001, China
| | - Xiao-Yun Li
- College of Chemistry, Green Catalysis Centre, Zhengzhou University, Zhengzhou, Henan Province 450001, China
| | - Shan-Shan Zhu
- College of Chemistry, Green Catalysis Centre, Zhengzhou University, Zhengzhou, Henan Province 450001, China
| | - Shi-Jun Li
- College of Chemistry, Green Catalysis Centre, Zhengzhou University, Zhengzhou, Henan Province 450001, China
| | - Yan Song
- College of Chemistry, Green Catalysis Centre, Zhengzhou University, Zhengzhou, Henan Province 450001, China
| | - Ling-Bo Qu
- College of Chemistry, Green Catalysis Centre, Zhengzhou University, Zhengzhou, Henan Province 450001, China
| | - Bing Yu
- College of Chemistry, Green Catalysis Centre, Zhengzhou University, Zhengzhou, Henan Province 450001, China
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43
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Cannalire R, Pelliccia S, Sancineto L, Novellino E, Tron GC, Giustiniano M. Visible light photocatalysis in the late-stage functionalization of pharmaceutically relevant compounds. Chem Soc Rev 2020; 50:766-897. [PMID: 33350402 DOI: 10.1039/d0cs00493f] [Citation(s) in RCA: 164] [Impact Index Per Article: 41.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The late stage functionalization (LSF) of complex biorelevant compounds is a powerful tool to speed up the identification of structure-activity relationships (SARs) and to optimize ADME profiles. To this end, visible-light photocatalysis offers unique opportunities to achieve smooth and clean functionalization of drugs by unlocking site-specific reactivities under generally mild reaction conditions. This review offers a critical assessment of current literature, pointing out the recent developments in the field while emphasizing the expected future progress and potential applications. Along with paragraphs discussing the visible-light photocatalytic synthetic protocols so far available for LSF of drugs and drug candidates, useful and readily accessible synoptic tables of such transformations, divided by functional groups, will be provided, thus enabling a useful, fast, and easy reference to them.
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Affiliation(s)
- Rolando Cannalire
- Department of Pharmacy, University of Naples Federico II, via D. Montesano 49, 80131, Napoli, Italy.
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44
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Du HW, Chen Y, Sun J, Gao QS, Wang H, Zhou MD. Synthesis of gem-Difluoroalkenes via Zn-Mediated Decarboxylative/Defluorinative Cross-Coupling. Org Lett 2020; 22:9342-9345. [DOI: 10.1021/acs.orglett.0c03554] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Hai-Wu Du
- School of Chemistry and Materials Science, Liaoning Shihua University, Fushun 113001, P. R. China
| | - Yang Chen
- School of Chemistry and Materials Science, Liaoning Shihua University, Fushun 113001, P. R. China
| | - Jing Sun
- School of Chemistry and Materials Science, Liaoning Shihua University, Fushun 113001, P. R. China
| | - Qi-Sheng Gao
- School of Chemistry and Materials Science, Liaoning Shihua University, Fushun 113001, P. R. China
| | - He Wang
- School of Chemistry and Materials Science, Liaoning Shihua University, Fushun 113001, P. R. China
| | - Ming-Dong Zhou
- School of Chemistry and Materials Science, Liaoning Shihua University, Fushun 113001, P. R. China
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45
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Noto N, Hyodo Y, Yoshizawa M, Koike T, Akita M. Transition Metal-Free Supramolecular Photoredox Catalysis in Water: A Phenoxazine Photocatalyst Encapsulated in V-Shaped Aromatic Amphiphiles. ACS Catal 2020. [DOI: 10.1021/acscatal.0c04221] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Naoki Noto
- School of Materials and Chemical Technology, Tokyo Institute of Technology, R1-27, 4259 Nagatsuta-cho, Midori-ku, Yokohama 226-8503, Japan
| | - Yuki Hyodo
- School of Materials and Chemical Technology, Tokyo Institute of Technology, R1-27, 4259 Nagatsuta-cho, Midori-ku, Yokohama 226-8503, Japan
| | - Michito Yoshizawa
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, R1-27, 4259 Nagatsuta-cho, Midori-ku, Yokohama 226-8503, Japan
- School of Materials and Chemical Technology, Tokyo Institute of Technology, R1-27, 4259 Nagatsuta-cho, Midori-ku, Yokohama 226-8503, Japan
| | - Takashi Koike
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, R1-27, 4259 Nagatsuta-cho, Midori-ku, Yokohama 226-8503, Japan
- School of Materials and Chemical Technology, Tokyo Institute of Technology, R1-27, 4259 Nagatsuta-cho, Midori-ku, Yokohama 226-8503, Japan
| | - Munetaka Akita
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, R1-27, 4259 Nagatsuta-cho, Midori-ku, Yokohama 226-8503, Japan
- School of Materials and Chemical Technology, Tokyo Institute of Technology, R1-27, 4259 Nagatsuta-cho, Midori-ku, Yokohama 226-8503, Japan
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46
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Noto N, Takahashi K, Goryo S, Takakado A, Iwata K, Koike T, Akita M. Laser Flash Photolysis Studies on Radical Monofluoromethylation by (Diarylamino)naphthalene Photoredox Catalysis: Long Lifetime of the Excited State is Not Always a Requisite. J Org Chem 2020; 85:13220-13227. [DOI: 10.1021/acs.joc.0c01999] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Naoki Noto
- School of Materials and Chemical Technology, Tokyo Institute of Technology, R1-27, 4259 Nagatsuta-cho, Midori-ku, Yokohama 226-8503, Japan
| | - Keigo Takahashi
- School of Materials and Chemical Technology, Tokyo Institute of Technology, R1-27, 4259 Nagatsuta-cho, Midori-ku, Yokohama 226-8503, Japan
| | - Shion Goryo
- Department of Chemistry, Faculty of Science, Gakushuin University, 1-5-1 Mejiro, Toshimaku, Tokyo 171-8588, Japan
| | - Akira Takakado
- Department of Chemistry, Faculty of Science, Gakushuin University, 1-5-1 Mejiro, Toshimaku, Tokyo 171-8588, Japan
| | - Koichi Iwata
- Department of Chemistry, Faculty of Science, Gakushuin University, 1-5-1 Mejiro, Toshimaku, Tokyo 171-8588, Japan
| | - Takashi Koike
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, R1-27, 4259 Nagatsuta-cho, Midori-ku, Yokohama 226-8503, Japan
- School of Materials and Chemical Technology, Tokyo Institute of Technology, R1-27, 4259 Nagatsuta-cho, Midori-ku, Yokohama 226-8503, Japan
| | - Munetaka Akita
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, R1-27, 4259 Nagatsuta-cho, Midori-ku, Yokohama 226-8503, Japan
- School of Materials and Chemical Technology, Tokyo Institute of Technology, R1-27, 4259 Nagatsuta-cho, Midori-ku, Yokohama 226-8503, Japan
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47
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Reichel M, Karaghiosoff K. Reagents for Selective Fluoromethylation: A Challenge in Organofluorine Chemistry. Angew Chem Int Ed Engl 2020; 59:12268-12281. [PMID: 32022357 PMCID: PMC7383490 DOI: 10.1002/anie.201913175] [Citation(s) in RCA: 83] [Impact Index Per Article: 20.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Revised: 01/30/2020] [Indexed: 01/09/2023]
Abstract
The introduction of a monofluoromethyl moiety has undoubtedly become a very important area of research in recent years. Owing to the beneficial properties of organofluorine compounds, such as their metabolic stability, the incorporation of the CH2 F group as a bioisosteric substitute for various functional groups is an attractive strategy for the discovery of new pharmaceuticals. Furthermore, the monofluoromethyl unit is also widely used in agrochemistry, in pharmaceutical chemistry, and in fine chemicals. The problems associated with climate change and the growing need for environmentally friendly industrial processes mean that alternatives to the frequently used CFC and HFBC fluoromethylating agents (CH2 FCl and CH2 FBr) are urgently needed and also required by the Montreal Protocol. This has recently prompted many researchers to develop alternative fluoromethylation agents. This Minireview summarizes both the classical and new generation of fluoromethylating agents. Reagents that act via electrophilic, nucleophilic, and radical pathways are discussed, in addition to their precursors.
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Affiliation(s)
- Marco Reichel
- Department of ChemistryLudwig-Maximilian UniversityButenandstr. 5–1381377MunichGermany
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48
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Reichel M, Karaghiosoff K. Reagenzien für die selektive Fluormethylierung: Herausforderungen der Organofluorchemie. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201913175] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Marco Reichel
- Department Chemie Ludwig-Maximilians-Universität Butenandtstr. 5–13 81377 München Deutschland
| | - Konstantin Karaghiosoff
- Department Chemie Ludwig-Maximilians-Universität Butenandtstr. 5–13 81377 München Deutschland
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49
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Alam T, Rakshit A, Begum P, Dahiya A, Patel BK. Visible-Light-Induced Difunctionalization of Styrenes: Synthesis of N-Hydroxybenzimidoyl Cyanides. Org Lett 2020; 22:3728-3733. [DOI: 10.1021/acs.orglett.0c01235] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Tipu Alam
- Department of Chemistry, Indian Institute of Technology Guwahati, North Guwahati 781039, India
| | - Amitava Rakshit
- Department of Chemistry, Indian Institute of Technology Guwahati, North Guwahati 781039, India
| | - Pakiza Begum
- Department of Chemistry, Indian Institute of Technology Guwahati, North Guwahati 781039, India
| | - Anjali Dahiya
- Department of Chemistry, Indian Institute of Technology Guwahati, North Guwahati 781039, India
| | - Bhisma K. Patel
- Department of Chemistry, Indian Institute of Technology Guwahati, North Guwahati 781039, India
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50
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Koike T. Frontiers in Radical Fluoromethylation by Visible‐Light Organic Photocatalysis. ASIAN J ORG CHEM 2020. [DOI: 10.1002/ajoc.202000058] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Takashi Koike
- Laboratory for Chemistry and Life Science Institute of Innovative ResearchTokyo Institute of Technology R1-27, 4259 Nagatsuta-cho, Midori-ku Yokohama 226-8503 Japan
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