1
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Sengoku T, Iwama H, Shimotori T, Fujimoto K, Inuzuka T, Matsune K, Yoda H. Visible-Light-Induced Reductive Coupling of Arylacetylenes with Benzothiazole Sulfones. J Org Chem 2023; 88:12776-12782. [PMID: 37614008 DOI: 10.1021/acs.joc.3c01554] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/25/2023]
Abstract
In this study, we propose heavy-metal-free reductive coupling of arylacetylenes with benzothiazole sulfones. The reactions of alkyl or benzylic benzothiazole sulfones with arylacetylenes are successfully performed in the presence of Hantzsch esters and K2CO3 under visible-light irradiation to afford 1,2-disubstituted alkenes in moderate to good yields, with Z-isomer as the major product. The utility of this protocol is expanded to α-deuterative coupling using a deuterated Hantzsch ester, furnishing the corresponding alkenes with high deuterium incorporation.
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Affiliation(s)
- Tetsuya Sengoku
- Department of Applied Chemistry, Faculty of Engineering, Shizuoka University, 3-5-1 Johoku, Naka-ku, Hamamatsu 432-8561, Japan
| | - Haruka Iwama
- Department of Applied Chemistry, Faculty of Engineering, Shizuoka University, 3-5-1 Johoku, Naka-ku, Hamamatsu 432-8561, Japan
| | - Takuma Shimotori
- Department of Applied Chemistry, Faculty of Engineering, Shizuoka University, 3-5-1 Johoku, Naka-ku, Hamamatsu 432-8561, Japan
| | - Keisuke Fujimoto
- Department of Applied Chemistry, Faculty of Engineering, Shizuoka University, 3-5-1 Johoku, Naka-ku, Hamamatsu 432-8561, Japan
| | - Toshiyasu Inuzuka
- Division of Instrumental Analysis, Life Science Research Center, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan
| | - Koki Matsune
- Department of Applied Chemistry, Faculty of Engineering, Shizuoka University, 3-5-1 Johoku, Naka-ku, Hamamatsu 432-8561, Japan
| | - Hidemi Yoda
- Department of Applied Chemistry, Faculty of Engineering, Shizuoka University, 3-5-1 Johoku, Naka-ku, Hamamatsu 432-8561, Japan
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2
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Zhou Z, Sales ZS, Pippel DJ, Qian M, Martin CL. Blue Light-Mediated, Photocatalyst-Free Decarboxylative Alkylation of Heteroaryl Sulfinimines. J Org Chem 2022; 87:14948-14952. [PMID: 36228170 DOI: 10.1021/acs.joc.2c01861] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
We report a diastereoselective, photocatalyst-free decarboxylative alkylation of (hetero)aryl sulfinimines using redox-active esters under blue light. High yields and diastereoselectivities can be achieved under mild conditions, and we demonstrate its utility as a synthetic method, especially for medicinal chemists.
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Affiliation(s)
- Zhe Zhou
- Discovery Process Research, Janssen Research & Development LLC, 3210 Merryfield Row, San Diego, California 92121, United States
| | - Zachary S Sales
- Discovery Process Research, Janssen Research & Development LLC, 3210 Merryfield Row, San Diego, California 92121, United States
| | - Daniel J Pippel
- Discovery Process Research, Janssen Research & Development LLC, 3210 Merryfield Row, San Diego, California 92121, United States
| | - Michael Qian
- Discovery Chemistry, Janssen Research & Development LLC, 3210 Merryfield Row, San Diego, California 92121, United States
| | - Connor L Martin
- Discovery Process Research, Janssen Research & Development LLC, 3210 Merryfield Row, San Diego, California 92121, United States
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3
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Zhang FH, Guo X, Zeng X, Wang Z. Asymmetric 1,4-functionalization of 1,3-enynes via dual photoredox and chromium catalysis. Nat Commun 2022; 13:5036. [PMID: 36028488 PMCID: PMC9418150 DOI: 10.1038/s41467-022-32614-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Accepted: 08/08/2022] [Indexed: 11/09/2022] Open
Abstract
The merger of photoredox and transition-metal catalysis has evolved as a robust platform in organic synthesis over the past decade. The stereoselective 1,4-functionalization of 1,3-enynes, a prevalent synthon in synthetic chemistry, could afford valuable chiral allene derivatives. However, tremendous efforts have been focused on the ionic reaction pathway. The radical-involved asymmetric 1,4-functionalization of 1,3-enynes remains a prominent challenge. Herein, we describe the asymmetric three-component 1,4-dialkylation of 1,3-enynes via dual photoredox and chromium catalysis to provide chiral allenols. This method features readily available starting materials, broad substrate scope, good functional group compatibility, high regioselectivity, and simultaneous control of axial and central chiralities. Mechanistic studies suggest that this reaction proceeds through a radical-involved redox-neutral pathway.
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Affiliation(s)
- Feng-Hua Zhang
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province, Department of Chemistry, School of Science, Westlake University, Hangzhou, 310024, Zhejiang Province, China.,Institute of Natural Sciences, Westlake Institute for Advanced Study, Hangzhou, 310024, Zhejiang Province, China
| | - Xiaochong Guo
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province, Department of Chemistry, School of Science, Westlake University, Hangzhou, 310024, Zhejiang Province, China.,Institute of Natural Sciences, Westlake Institute for Advanced Study, Hangzhou, 310024, Zhejiang Province, China
| | - Xianrong Zeng
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province, Department of Chemistry, School of Science, Westlake University, Hangzhou, 310024, Zhejiang Province, China.,Institute of Natural Sciences, Westlake Institute for Advanced Study, Hangzhou, 310024, Zhejiang Province, China
| | - Zhaobin Wang
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province, Department of Chemistry, School of Science, Westlake University, Hangzhou, 310024, Zhejiang Province, China. .,Institute of Natural Sciences, Westlake Institute for Advanced Study, Hangzhou, 310024, Zhejiang Province, China.
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4
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Xue S, Cristòfol À, Limburg B, Zeng Q, Kleij AW. Dual Cobalt/Organophotoredox Catalysis for Diastereo- and Regioselective 1,2-Difunctionalization of 1,3-Diene Surrogates Creating Quaternary Carbon Centers. ACS Catal 2022. [DOI: 10.1021/acscatal.2c00660] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Sijing Xue
- Institute of Chemical Research of Catalonia (ICIQ), the Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007 Tarragona, Spain
| | - Àlex Cristòfol
- Institute of Chemical Research of Catalonia (ICIQ), the Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007 Tarragona, Spain
| | - Bart Limburg
- Institute of Chemical Research of Catalonia (ICIQ), the Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007 Tarragona, Spain
| | - Qian Zeng
- Institute of Chemical Research of Catalonia (ICIQ), the Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007 Tarragona, Spain
| | - Arjan W. Kleij
- Institute of Chemical Research of Catalonia (ICIQ), the Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007 Tarragona, Spain
- Catalan Institute of Research and Advanced Studies (ICREA), Pg. Lluís Companys 23, 08010 Barcelona, Spain
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5
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Hirao Y, Eto H, Teraoka M, Kubo T. A Strong Hydride Donating, Acid Stable and Reusable 1,4-Dihydropyridine for Selective Aldimine and Aldehyde Reductions. Org Biomol Chem 2022; 20:1671-1679. [DOI: 10.1039/d1ob02358f] [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 1,4-dihydropyridine derivative, lacking carbonyl groups and containing bulky aryl substituents, was synthesized and found to have a high hydride donating ability, acid resistance and reusability. Thermodynamic parameters for electron...
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6
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Sengoku T, Ogawa D, Iwama H, Inuzuka T, Yoda H. A heavy-metal-free desulfonylative Giese-type reaction of benzothiazole sulfones under visible-light conditions. Chem Commun (Camb) 2021; 57:9858-9861. [PMID: 34490858 DOI: 10.1039/d1cc03833h] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A visible-light-induced desulfonylative Giese-type reaction has been developed. Essential to the success is the employment of Hantzsch ester to activate benzothiazole sulfones without any heavy-metal additives. Not only benzylic benzothiazole sulfones but also alkyl ones were viable substrates and reacted with electron-deficient alkenes and a propiol amide.
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Affiliation(s)
- Tetsuya Sengoku
- Department of Applied Chemistry, Faculty of Engineering, Shizuoka University, 3-5-1 Johoku, Naka-ku, Hamamatsu 432-8561, Japan.
| | - Daichi Ogawa
- Department of Applied Chemistry, Faculty of Engineering, Shizuoka University, 3-5-1 Johoku, Naka-ku, Hamamatsu 432-8561, Japan.
| | - Haruka Iwama
- Department of Applied Chemistry, Faculty of Engineering, Shizuoka University, 3-5-1 Johoku, Naka-ku, Hamamatsu 432-8561, Japan.
| | - Toshiyasu Inuzuka
- Division of Instrumental Analysis, Life Science Research Center, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan
| | - Hidemi Yoda
- Department of Applied Chemistry, Faculty of Engineering, Shizuoka University, 3-5-1 Johoku, Naka-ku, Hamamatsu 432-8561, Japan.
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7
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Shen GB, Xie L, Wang YX, Gong TY, Wang BY, Hu YH, Fu YH, Yan M. Quantitative Estimation of the Hydrogen-Atom-Donating Ability of 4-Substituted Hantzsch Ester Radical Cations. ACS OMEGA 2021; 6:23621-23629. [PMID: 34549160 PMCID: PMC8444320 DOI: 10.1021/acsomega.1c03872] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Accepted: 08/19/2021] [Indexed: 05/22/2023]
Abstract
The purpose of this study is to investigate thermodynamic and kinetic properties on the hydrogen-atom-donating ability of 4-substituted Hantzsch ester radical cations (XRH•+), which are excellent NADH coenzyme models. Gibbs free energy changes and activation free energies of 17 XRH•+ releasing H• [denoted as ΔG HD o(XRH•+) and ΔG HD ≠(XRH•+)] were calculated using density functional theory (DFT) and compared with that of Hantzsch ester (HEH2) and NADH. ΔG HD o(XRH•+) range from 19.35 to 31.25 kcal/mol, significantly lower than that of common antioxidants (such as ascorbic acid, BHT, the NADH coenzyme, and so forth). ΔG HD ≠(XRH•+) range from 29.81 to 39.00 kcal/mol, indicating that XRH•+ spontaneously releasing H• are extremely slow unless catalysts or active intermediate radicals exist. According to the computed data, it can be inferred that the Gibbs free energies and activation free energies of the core 1,4-dihydropyridine radical cation structure (DPH•+) releasing H• [ΔG HD o(DPH•+) and ΔG HD ≠(DPH•+)] should be 19-32 kcal/mol and 29-39 kcal/mol in acetonitrile, respectively. The correlations between the thermodynamic driving force [ΔG HD o(XRH•+)] and the activation free energy [ΔG HD ≠(XRH•+)] are also explored. Gibbs free energy is the important and decisive parameter, and ΔG HD ≠(XRH•+) increases in company with the increase of ΔG HD o(XRH•+), but no simple linear correlations are found. Even though all XRH•+ are judged as excellent antioxidants from the thermodynamic view, the computed data indicate that whether XRH•+ is an excellent antioxidant in reaction is decided by the R substituents in 4-position. XRH•+ with nonaromatic substituents tend to release R• instead of H• to quench radicals. XRH•+ with aromatic substituents tend to release H• and be used as antioxidants, but not all aromatic substituted Hantzsch esters are excellent antioxidants.
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Affiliation(s)
- Guang-Bin Shen
- School of Medical Engineering, Jining Medical University, Jining, Shandong 272000, P. R. China
| | - Li Xie
- School of Medical Engineering, Jining Medical University, Jining, Shandong 272000, P. R. China
| | - Yun-Xia Wang
- School of Medical Engineering, Jining Medical University, Jining, Shandong 272000, P. R. China
| | - Teng-Yang Gong
- School of Pharmacy, Jining Medical University, Rizhao, Shandong 276800, P. R. China
| | - Bin-Yu Wang
- School of Medical Engineering, Jining Medical University, Jining, Shandong 272000, P. R. China
| | - Yu-He Hu
- School of Medical Engineering, Jining Medical University, Jining, Shandong 272000, P. R. China
| | - Yan-Hua Fu
- College of Chemistry and Environmental Engineering, Anyang Institute of Technology, Anyang, Henan 455000, P. R. China
| | - Maocai Yan
- School of Pharmacy, Jining Medical University, Rizhao, Shandong 276800, P. R. China
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8
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Fu Y, Shen G, Wang K, Zhu X. Comparison of Thermodynamic, Kinetic Forces for Three NADH Analogues to Release Hydride Ion or Hydrogen Atom in Acetonitrile. ChemistrySelect 2021. [DOI: 10.1002/slct.202102048] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Yan‐Hua Fu
- College of Chemistry and Environmental Engineering Anyang Institute of Technology, Anyang Henan 455000 China
| | - Guang‐Bin Shen
- School of Medical Engineering Jining Medical University Jining, Shandong 272000 P. R. China
| | - Kai Wang
- College of Chemistry and Environmental Engineering Anyang Institute of Technology, Anyang Henan 455000 China
| | - Xiao‐Qing Zhu
- Collaborative Innovation Center of Chemical Science and Engineering Nankai University Tianjin 300071 China
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9
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Sumida Y, Ohmiya H. Direct excitation strategy for radical generation in organic synthesis. Chem Soc Rev 2021; 50:6320-6332. [DOI: 10.1039/d1cs00262g] [Citation(s) in RCA: 46] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This tutorial review encompasses the radical generation based on classical methods and photoredox catalysis. It will also focus on radical generation only demanding visible-light, which involves EDA complex and direct photo-excitation strategy.
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Affiliation(s)
- Yuto Sumida
- Division of Pharmaceutical Sciences
- Graduate School of Medical Sciences
- Kanazawa University
- Kanazawa 920-1192
- Japan
| | - Hirohisa Ohmiya
- Division of Pharmaceutical Sciences
- Graduate School of Medical Sciences
- Kanazawa University
- Kanazawa 920-1192
- Japan
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10
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Bryden MA, Zysman-Colman E. Organic thermally activated delayed fluorescence (TADF) compounds used in photocatalysis. Chem Soc Rev 2021; 50:7587-7680. [PMID: 34002736 DOI: 10.1039/d1cs00198a] [Citation(s) in RCA: 124] [Impact Index Per Article: 41.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Organic compounds that show Thermally Activated Delayed Fluorescence (TADF) have become wildly popular as next-generation emitters in organic light emitting diodes (OLEDs). Since 2016, a subset of these have found increasing use as photocatalysts. This review comprehensively highlights their potential by documenting the diversity of the reactions where an organic TADF photocatalyst can be used in lieu of a noble metal complex photocatalyst. Beyond the small number of TADF photocatalysts that have been used to date, the analysis conducted within this review reveals the wider potential of organic donor-acceptor TADF compounds as photocatalysts. A discussion of the benefits of compounds showing TADF for photocatalysis is presented, which paints a picture of a very promising future for organic photocatalyst development.
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Affiliation(s)
- Megan Amy Bryden
- Organic Semiconductor Centre, EaStCHEM School of Chemistry, University of St Andrews, St Andrews, KY16 9ST, UK.
| | - Eli Zysman-Colman
- Organic Semiconductor Centre, EaStCHEM School of Chemistry, University of St Andrews, St Andrews, KY16 9ST, UK.
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11
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Bruch QJ, Connor GP, McMillion ND, Goldman AS, Hasanayn F, Holland PL, Miller AJM. Considering Electrocatalytic Ammonia Synthesis via Bimetallic Dinitrogen Cleavage. ACS Catal 2020. [DOI: 10.1021/acscatal.0c02606] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Quinton J. Bruch
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3290, United States
| | - Gannon P. Connor
- Department of Chemistry, Yale University, New Haven, Connecticut 06520, United States
| | - Noah D. McMillion
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3290, United States
| | - Alan S. Goldman
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, New Brunswick, New Jersey 08903, United States
| | - Faraj Hasanayn
- Department of Chemistry, American University of Beirut, Beirut 1107 2020, Lebanon
| | - Patrick L. Holland
- Department of Chemistry, Yale University, New Haven, Connecticut 06520, United States
| | - Alexander J. M. Miller
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3290, United States
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12
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Schwarz JL, Huang HM, Paulisch TO, Glorius F. Dialkylation of 1,3-Dienes by Dual Photoredox and Chromium Catalysis. ACS Catal 2019. [DOI: 10.1021/acscatal.9b04222] [Citation(s) in RCA: 75] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- J. Luca Schwarz
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstraße 40, 48149 Münster, Germany
| | - Huan-Ming Huang
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstraße 40, 48149 Münster, Germany
| | - Tiffany O. Paulisch
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstraße 40, 48149 Münster, Germany
| | - Frank Glorius
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstraße 40, 48149 Münster, Germany
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13
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Xie S, Li D, Huang H, Zhang F, Chen Y. Intermolecular Radical Addition to Ketoacids Enabled by Boron Activation. J Am Chem Soc 2019; 141:16237-16242. [DOI: 10.1021/jacs.9b09099] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Shasha Xie
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Defang Li
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
- School of Physical Science and Technology, ShanghaiTech University, 100 Haike Road, Shanghai 201210, China
| | - Hanchu Huang
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Fuyuan Zhang
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
- School of Physical Science and Technology, ShanghaiTech University, 100 Haike Road, Shanghai 201210, China
| | - Yiyun Chen
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
- School of Physical Science and Technology, ShanghaiTech University, 100 Haike Road, Shanghai 201210, China
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14
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1,4-Dihydropyridine/BF3OEt2 for the reduction of imines: Influences of the amount of added BF3OEt2 and the substitution at N-1 and C-4 of the dihydropyridine ring. Tetrahedron Lett 2019. [DOI: 10.1016/j.tetlet.2019.151129] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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15
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Ramirez NP, Lana-Villarreal T, Gonzalez-Gomez JC. Direct Decarboxylative Allylation and Arylation of Aliphatic Carboxylic Acids Using Flavin-Mediated Photoredox Catalysis. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900888] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Nieves P. Ramirez
- Instituto de Síntesis Orgánica y Departamento de Química Orgánica; Universidad de Alicante; Apdo 99, E -03080 Alicante Spain
| | - Teresa Lana-Villarreal
- Instituto de Electroquímica y Departamento de Química Física; Universidad de Alicante; Spain
| | - Jose C. Gonzalez-Gomez
- Instituto de Síntesis Orgánica y Departamento de Química Orgánica; Universidad de Alicante; Apdo 99, E -03080 Alicante Spain
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16
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Tang R, Shao Z, Wang J, Liu Z, Li YM, Shen Y. Iron(II)-Catalyzed Radical Addition to Aldimines with Hantzsch Ester as a Two-Hydrogen Atom Donor. J Org Chem 2019; 84:8177-8184. [PMID: 31122013 DOI: 10.1021/acs.joc.9b01163] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
The first Fe(OTf)2-catalyzed radical addition to aldimines with Hantzsch ester as a two-hydrogen atom donor is reported. The tin-free reaction works well for electron-deficient substrates and provides a potentially useful approach to α-branched amines and α-amino acids.
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Affiliation(s)
- Rui Tang
- Faculty of Life Science and Technology , Kunming University of Science and Technology , Kunming 650500 , China
| | - Ziyan Shao
- Faculty of Life Science and Technology , Kunming University of Science and Technology , Kunming 650500 , China
| | - Jiancheng Wang
- Faculty of Life Science and Technology , Kunming University of Science and Technology , Kunming 650500 , China
| | - Zhongxian Liu
- Faculty of Life Science and Technology , Kunming University of Science and Technology , Kunming 650500 , China
| | - Ya-Min Li
- Faculty of Life Science and Technology , Kunming University of Science and Technology , Kunming 650500 , China
| | - Yuehai Shen
- Faculty of Life Science and Technology , Kunming University of Science and Technology , Kunming 650500 , China
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17
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Liang S, Kumon T, Angnes RA, Sanchez M, Xu B, Hammond GB. Synthesis of Alkyl Halides from Aldehydes via Deformylative Halogenation. Org Lett 2019; 21:3848-3854. [PMID: 31050440 PMCID: PMC6525078 DOI: 10.1021/acs.orglett.9b01337] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An unprecedented deformylative halogenation of aldehydes to alkyl halides is presented. Under oxidative conditions, 1,4-dihydropyridine (DHP), derived from an aldehyde, generated a C(sp3)- radical that coupled with a halogen radical that was generated from inexpensive and atom-economical halogen sources (NaBr, NaI, or HCl), to yield an alkyl halide. Because of the mild conditions, a wide range of functional groups were tolerated, and excellent site selectivity was achieved.
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Affiliation(s)
- Shengzong Liang
- Department of Chemistry, University of Louisville, Louisville, Kentucky 40292, United States
| | - Tatsuya Kumon
- Faculty of Molecular Chemistry and Engineering, Kyoto Institute of Technology, Matsugasaki, Kyoto 606-8585, Japan
| | - Ricardo A. Angnes
- Chemistry Institute, State University of Campinas - Unicamp C.P. 6154, CEP.13083-970, Campinas, São Paulo, Brazil
| | - Melissa Sanchez
- California State University Fresno, 2555 East San Ramon Avenue M/S SB70, Fresno, California 93740, United States
| | - Bo Xu
- Key Laboratory of Science and Technology of Eco-Textiles, Ministry of Education, College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, China
| | - Gerald B. Hammond
- Department of Chemistry, University of Louisville, Louisville, Kentucky 40292, United States
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18
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Milligan JA, Phelan JP, Badir SO, Molander GA. Alkyl Carbon-Carbon Bond Formation by Nickel/Photoredox Cross-Coupling. Angew Chem Int Ed Engl 2019; 58:6152-6163. [PMID: 30291664 DOI: 10.1002/anie.201809431] [Citation(s) in RCA: 373] [Impact Index Per Article: 74.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2018] [Indexed: 11/10/2022]
Abstract
The union of photoredox and nickel catalysis has resulted in a renaissance in radical chemistry as well as in the use of nickel-catalyzed transformations, specifically for carbon-carbon bond formation. Collectively, these advances address the longstanding challenge of late-stage cross-coupling of functionalized alkyl fragments. Empowered by the notion that photocatalytically generated alkyl radicals readily undergo capture by Ni complexes, wholly new feedstocks for cross-coupling have been realized. Herein, we highlight recent developments in several types of alkyl cross-couplings that are accessible exclusively through this approach.
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Affiliation(s)
- John A Milligan
- Department of Chemistry, University of Pennsylvania, Roy and Diana Vagelos Laboratories, 231 S. 34th Street, Philadelphia, PA, 19104-6323, USA
| | - James P Phelan
- Department of Chemistry, University of Pennsylvania, Roy and Diana Vagelos Laboratories, 231 S. 34th Street, Philadelphia, PA, 19104-6323, USA
| | - Shorouk O Badir
- Department of Chemistry, University of Pennsylvania, Roy and Diana Vagelos Laboratories, 231 S. 34th Street, Philadelphia, PA, 19104-6323, USA
| | - Gary A Molander
- Department of Chemistry, University of Pennsylvania, Roy and Diana Vagelos Laboratories, 231 S. 34th Street, Philadelphia, PA, 19104-6323, USA
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19
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Milligan JA, Phelan JP, Badir SO, Molander GA. Alkyl‐C‐C‐Bindungsbildung durch Nickel/Photoredox‐Kreuzkupplung. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201809431] [Citation(s) in RCA: 82] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- John A. Milligan
- Department of ChemistryUniversity of PennsylvaniaRoy and Diana Vagelos Laboratories 231 S. 34th Street Philadelphia PA 19104-6323 USA
| | - James P. Phelan
- Department of ChemistryUniversity of PennsylvaniaRoy and Diana Vagelos Laboratories 231 S. 34th Street Philadelphia PA 19104-6323 USA
| | - Shorouk O. Badir
- Department of ChemistryUniversity of PennsylvaniaRoy and Diana Vagelos Laboratories 231 S. 34th Street Philadelphia PA 19104-6323 USA
| | - Gary A. Molander
- Department of ChemistryUniversity of PennsylvaniaRoy and Diana Vagelos Laboratories 231 S. 34th Street Philadelphia PA 19104-6323 USA
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20
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Phelan JP, Lang SB, Sim J, Berritt S, Peat AJ, Billings K, Fan L, Molander GA. Open-Air Alkylation Reactions in Photoredox-Catalyzed DNA-Encoded Library Synthesis. J Am Chem Soc 2019; 141:3723-3732. [PMID: 30753065 DOI: 10.1021/jacs.9b00669] [Citation(s) in RCA: 220] [Impact Index Per Article: 44.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
DNA-encoded library (DEL) technology is a powerful tool commonly used by the pharmaceutical industry for the identification of compounds with affinity to biomolecular targets. Success in this endeavor lies in sampling diverse chemical libraries. However, current DELs tend to be deficient in C(sp3) carbon counts. We report unique solutions to the challenge of increasing both the chemical diversity of these libraries and their C(sp3) carbon counts by merging Ni/photoredox dual catalytic C(sp2)-C(sp3) cross-coupling as well as photoredox-catalyzed radical/polar crossover alkylation protocols with DELs. The successful integration of multiple classes of radical sources enables the rapid incorporation of a diverse set of alkyl fragments.
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Affiliation(s)
- James P Phelan
- Roy and Diana Vagelos Laboratories, Department of Chemistry , University of Pennsylvania , 231 South 34th Street , Philadelphia , Pennsylvania 19104-6323 , United States
| | - Simon B Lang
- Roy and Diana Vagelos Laboratories, Department of Chemistry , University of Pennsylvania , 231 South 34th Street , Philadelphia , Pennsylvania 19104-6323 , United States
| | - Jaehoon Sim
- Roy and Diana Vagelos Laboratories, Department of Chemistry , University of Pennsylvania , 231 South 34th Street , Philadelphia , Pennsylvania 19104-6323 , United States
| | - Simon Berritt
- Roy and Diana Vagelos Laboratories, Department of Chemistry , University of Pennsylvania , 231 South 34th Street , Philadelphia , Pennsylvania 19104-6323 , United States
| | - Andrew J Peat
- GlaxoSmithKline , 1250 South Collegeville Road , Collegeville , Pennsylvania 19426 , United States
| | - Katelyn Billings
- GlaxoSmithKline , 200 Cambridge Park Drive , Cambridge , Massachusetts 02140 , United States
| | - Lijun Fan
- GlaxoSmithKline , 200 Cambridge Park Drive , Cambridge , Massachusetts 02140 , United States
| | - Gary A Molander
- Roy and Diana Vagelos Laboratories, Department of Chemistry , University of Pennsylvania , 231 South 34th Street , Philadelphia , Pennsylvania 19104-6323 , United States
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21
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Chen H, Anand D, Zhou L. Photoredox Defluorinative Alkylation of 1‐Trifluoromethyl Alkenes and 1,3‐Butadienes with 1,4‐Dihydropyridines as Alkylation Reagents. ASIAN J ORG CHEM 2019. [DOI: 10.1002/ajoc.201900026] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Haoguo Chen
- School of ChemistrySun Yat-Sen University 135 Xingang West Road Guangzhou 510275 China
| | - Devireddy Anand
- School of ChemistrySun Yat-Sen University 135 Xingang West Road Guangzhou 510275 China
| | - Lei Zhou
- School of ChemistrySun Yat-Sen University 135 Xingang West Road Guangzhou 510275 China
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22
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Loose F, Wang D, Tian L, Scholes GD, Knowles RR, Chirik PJ. Evaluation of excited state bond weakening for ammonia synthesis from a manganese nitride: stepwise proton coupled electron transfer is preferred over hydrogen atom transfer. Chem Commun (Camb) 2019; 55:5595-5598. [PMID: 31025662 DOI: 10.1039/c9cc01046g] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Concepts for the thermodynamically challenging synthesis of weak N–H bonds by photoinduced proton coupled electron transfer are explored. By harvesting visible light as driving force, ammonia synthesis was achieved and mechanistically elucidated.
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Affiliation(s)
- Florian Loose
- Department of Chemistry
- Princeton University
- Frick Laboratory
- Princeton
- USA
| | - Dian Wang
- Department of Chemistry
- Princeton University
- Frick Laboratory
- Princeton
- USA
| | - Lei Tian
- Department of Chemistry
- Princeton University
- Frick Laboratory
- Princeton
- USA
| | | | - Robert R. Knowles
- Department of Chemistry
- Princeton University
- Frick Laboratory
- Princeton
- USA
| | - Paul J. Chirik
- Department of Chemistry
- Princeton University
- Frick Laboratory
- Princeton
- USA
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23
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Yang JD, Ji P, Xue XS, Cheng JP. Recent Advances and Advisable Applications of Bond Energetics in Organic Chemistry. J Am Chem Soc 2018; 140:8611-8623. [DOI: 10.1021/jacs.8b04104] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Jin-Dong Yang
- Center of Basic Molecular Science (CBMS), Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Pengju Ji
- Center of Basic Molecular Science (CBMS), Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Xiao-Song Xue
- State Key Laboratory of Elemento-organic Chemistry, Collaborative Innovation Centre of Chemical Science and Engineering, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Jin-Pei Cheng
- Center of Basic Molecular Science (CBMS), Department of Chemistry, Tsinghua University, Beijing 100084, China
- State Key Laboratory of Elemento-organic Chemistry, Collaborative Innovation Centre of Chemical Science and Engineering, College of Chemistry, Nankai University, Tianjin 300071, China
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24
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Sebők-Nagy K, Rózsár D, Puskás LG, Balázs Á, Páli T. Electron paramagnetic resonance spectroscopic studies of the electron transfer reaction of Hantzsch ester and a pyrylium salt. RSC Adv 2018; 8:29924-29927. [PMID: 35547277 PMCID: PMC9085297 DOI: 10.1039/c8ra05693e] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2018] [Accepted: 08/13/2018] [Indexed: 12/01/2022] Open
Abstract
The oxidation of Hantzsch ester by a pyrylium cation takes place via electron–proton–electron transfer. The reaction was investigated with EPR spectroscopy using TEMPO and DMPO for inhibition and spin trapping, respectively, of the radicals appearing during the reaction. The present in-depth EPR study of the radical reactions of a NADH analogue indicate a complex electron transfer mechanism in the title reaction. The oxidation of Hantzsch ester by a pyrylium cation takes 3 place via electron–proton–electron transfer. The present in-depth EPR study of the radical reactions of a NADH analogue indicate a complex electron transfer mechanism in the title reaction.![]()
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Affiliation(s)
- K. Sebők-Nagy
- Institute of Biophysics
- Biological Research Centre
- Hungarian Academy of Sciences
- H-6726 Szeged
- Hungary
| | | | | | | | - T. Páli
- Institute of Biophysics
- Biological Research Centre
- Hungarian Academy of Sciences
- H-6726 Szeged
- Hungary
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25
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Determining and Understanding N-H Bond Strengths in Synthetic Nitrogen Fixation Cycles. TOP ORGANOMETAL CHEM 2017. [DOI: 10.1007/3418_2016_8] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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26
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Sangwan R, Mandal PK. Recent advances in photoinduced glycosylation: oligosaccharides, glycoconjugates and their synthetic applications. RSC Adv 2017. [DOI: 10.1039/c7ra01858d] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Carbohydrates have been demonstrated to perform imperative act in biological processes. This review highlights recent uses of photoinduced glycosylation in carbohydrate chemistry for the synthesis of oligosaccharides, thiosugars, glycoconjugates and glycoprotein.
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Affiliation(s)
- Rekha Sangwan
- Medicinal and Process Chemistry Division
- CSIR-Central Drug Research Institute
- Lucknow
- India
- Academy of Scientific and Innovative Research
| | - Pintu Kumar Mandal
- Medicinal and Process Chemistry Division
- CSIR-Central Drug Research Institute
- Lucknow
- India
- Academy of Scientific and Innovative Research
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27
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Gutiérrez-Bonet Á, Tellis JC, Matsui JK, Vara BA, Molander GA. 1,4-Dihydropyridines as Alkyl Radical Precursors: Introducing the Aldehyde Feedstock to Nickel/Photoredox Dual Catalysis. ACS Catal 2016; 6:8004-8008. [PMID: 27990318 PMCID: PMC5152669 DOI: 10.1021/acscatal.6b02786] [Citation(s) in RCA: 183] [Impact Index Per Article: 22.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2016] [Revised: 10/20/2016] [Indexed: 01/05/2023]
Abstract
![]()
A Ni/photoredox dual catalytic cross-coupling
is disclosed in which
a diverse range of (hetero)aryl bromides are used as electrophiles,
with 1,4-dihydropyridines serving as precursors to Csp3-centered alkyl radical coupling partners. The reported method
is characterized by its extremely mild reaction conditions, enabling
access to underexplored cores.
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Affiliation(s)
- Álvaro Gutiérrez-Bonet
- Roy and Diana Vagelos Laboratories,
Department of Chemistry, University of Pennsylvania, 231 South 34th Street, Philadelphia, Pennsylvania 19104-6323, United States
| | - John C. Tellis
- Roy and Diana Vagelos Laboratories,
Department of Chemistry, University of Pennsylvania, 231 South 34th Street, Philadelphia, Pennsylvania 19104-6323, United States
| | - Jennifer K. Matsui
- Roy and Diana Vagelos Laboratories,
Department of Chemistry, University of Pennsylvania, 231 South 34th Street, Philadelphia, Pennsylvania 19104-6323, United States
| | - Brandon A. Vara
- Roy and Diana Vagelos Laboratories,
Department of Chemistry, University of Pennsylvania, 231 South 34th Street, Philadelphia, Pennsylvania 19104-6323, United States
| | - Gary A. Molander
- Roy and Diana Vagelos Laboratories,
Department of Chemistry, University of Pennsylvania, 231 South 34th Street, Philadelphia, Pennsylvania 19104-6323, United States
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28
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Nakajima K, Nojima S, Nishibayashi Y. Nickel- and Photoredox-Catalyzed Cross-Coupling Reactions of Aryl Halides with 4-Alkyl-1,4-dihydropyridines as Formal Nucleophilic Alkylation Reagents. Angew Chem Int Ed Engl 2016; 55:14106-14110. [DOI: 10.1002/anie.201606513] [Citation(s) in RCA: 138] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2016] [Revised: 09/18/2016] [Indexed: 02/03/2023]
Affiliation(s)
- Kazunari Nakajima
- Department of Systems Innovation; School of Engineering; The University of Tokyo; Hongo, Bunkyo-ku Tokyo 113-8656 Japan
| | - Sunao Nojima
- Department of Systems Innovation; School of Engineering; The University of Tokyo; Hongo, Bunkyo-ku Tokyo 113-8656 Japan
| | - Yoshiaki Nishibayashi
- Department of Systems Innovation; School of Engineering; The University of Tokyo; Hongo, Bunkyo-ku Tokyo 113-8656 Japan
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29
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Nakajima K, Nojima S, Nishibayashi Y. Nickel- and Photoredox-Catalyzed Cross-Coupling Reactions of Aryl Halides with 4-Alkyl-1,4-dihydropyridines as Formal Nucleophilic Alkylation Reagents. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201606513] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Kazunari Nakajima
- Department of Systems Innovation; School of Engineering; The University of Tokyo; Hongo, Bunkyo-ku Tokyo 113-8656 Japan
| | - Sunao Nojima
- Department of Systems Innovation; School of Engineering; The University of Tokyo; Hongo, Bunkyo-ku Tokyo 113-8656 Japan
| | - Yoshiaki Nishibayashi
- Department of Systems Innovation; School of Engineering; The University of Tokyo; Hongo, Bunkyo-ku Tokyo 113-8656 Japan
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30
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Pappas I, Chirik PJ. Catalytic Proton Coupled Electron Transfer from Metal Hydrides to Titanocene Amides, Hydrazides and Imides: Determination of Thermodynamic Parameters Relevant to Nitrogen Fixation. J Am Chem Soc 2016; 138:13379-13389. [DOI: 10.1021/jacs.6b08009] [Citation(s) in RCA: 60] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Iraklis Pappas
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544, United States
| | - Paul J. Chirik
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544, United States
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31
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Raviña-Eirin E, Azuaje J, Sotelo E, Gomez-Amoza JL, Martinez-Pacheco R. Drug structural features affect drug delivery from hyperbranched polyesteramide hot melt extrudates. Eur J Pharm Biopharm 2016; 102:1-8. [PMID: 26912462 DOI: 10.1016/j.ejpb.2016.02.008] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2015] [Revised: 01/08/2016] [Accepted: 02/14/2016] [Indexed: 11/27/2022]
Abstract
The aim of this study was firstly to evaluate the utility of Hybrane S1200 as a hot melt extrusion (HME) carrier to prepare instant-release multiparticulate systems for very poorly-soluble drugs such as ketoconazole or nifedipine. Hybrane S1200 allows an easy extrusion of its drug mixtures at a relatively low temperature, not higher than 90°C, and with no need of any additional aid. Extrudates containing 10% of nifedipine or ketoconazole form monophasic systems. Nifedipine extrudate shows no drug release in drug dissolution rate tests while ketoconazole extrudate release reaches only 60% of drug content. Additionally, a turbidity in the dissolution medium due to the formation of a kind of polymer vesicles (ranging 3-0.2μm in size) is observed. These facts could suggest a chemical interaction between the polymer and both drugs, triggered by the HME process. Both nifedipine and ketoconazole share characteristic acid-base profiles that could facilitate a degradation processes within the polymer, thus modifying Hybrane's water-solubility and polar nature. Such modified polymer structure, when in aqueous medium, forms the aforementioned stable vesicles that may encapsulate the drugs, thus making its delivery difficult or even preventing it.
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Affiliation(s)
- Elena Raviña-Eirin
- Department of Pharmacy and Pharmaceutical Technology and Institute of Industrial Pharmacy, Faculty of Pharmacy, University of Santiago de Compostela, 15782, Spain
| | - Jhonny Azuaje
- Center for Research in Biological Chemistry and Molecular Materials (CIQUS) and Department of Organic Chemistry, Faculty of Pharmacy, University of Santiago de Compostela, 15782, Spain
| | - Eddy Sotelo
- Center for Research in Biological Chemistry and Molecular Materials (CIQUS) and Department of Organic Chemistry, Faculty of Pharmacy, University of Santiago de Compostela, 15782, Spain
| | - Jose Luis Gomez-Amoza
- Department of Pharmacy and Pharmaceutical Technology and Institute of Industrial Pharmacy, Faculty of Pharmacy, University of Santiago de Compostela, 15782, Spain
| | - Ramon Martinez-Pacheco
- Department of Pharmacy and Pharmaceutical Technology and Institute of Industrial Pharmacy, Faculty of Pharmacy, University of Santiago de Compostela, 15782, Spain.
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32
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Nakajima K, Nojima S, Sakata K, Nishibayashi Y. Visible‐Light‐Mediated Aromatic Substitution Reactions of Cyanoarenes with 4‐Alkyl‐1,4‐dihydropyridines through Double Carbon–Carbon Bond Cleavage. ChemCatChem 2016. [DOI: 10.1002/cctc.201600037] [Citation(s) in RCA: 91] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Kazunari Nakajima
- Institute of Engineering Innovation School of Engineering The University of Tokyo, Yayoi, Bunkyo-ku Tokyo 113-8656 Japan
| | - Sunao Nojima
- Institute of Engineering Innovation School of Engineering The University of Tokyo, Yayoi, Bunkyo-ku Tokyo 113-8656 Japan
| | - Ken Sakata
- Faculty of Pharmaceutical Sciences Hoshi University, Ebara, Shinagawa-ku Tokyo 142-8501 Japan
| | - Yoshiaki Nishibayashi
- Institute of Engineering Innovation School of Engineering The University of Tokyo, Yayoi, Bunkyo-ku Tokyo 113-8656 Japan
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33
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Wang Z, Ji P, Li X, Cheng JP. Double-Line Hammett Relationship Revealed through Precise Acidity Measurement of Benzenethiols in Neat Ionic Media: A Typical “Ionic Liquid Effect”? Org Lett 2014; 16:5744-7. [DOI: 10.1021/ol502808u] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Zhen Wang
- Centre
of Basic Molecular Science, Chemistry Department, Tsinghua University, Beijing 100084, China
- State
Key Laboratory of Elemento-organic Chemistry, Collaborative Innovation
Centre of Chemical Science and Engineering, Nankai University, Tianjin 300071, China
| | - Pengju Ji
- Centre
of Basic Molecular Science, Chemistry Department, Tsinghua University, Beijing 100084, China
| | - Xin Li
- State
Key Laboratory of Elemento-organic Chemistry, Collaborative Innovation
Centre of Chemical Science and Engineering, Nankai University, Tianjin 300071, China
| | - Jin-Pei Cheng
- Centre
of Basic Molecular Science, Chemistry Department, Tsinghua University, Beijing 100084, China
- State
Key Laboratory of Elemento-organic Chemistry, Collaborative Innovation
Centre of Chemical Science and Engineering, Nankai University, Tianjin 300071, China
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34
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Wang Z, Deng H, Li X, Ji P, Cheng JP. Standard and Absolute pKa Scales of Substituted Benzoic Acids in Room Temperature Ionic Liquids. J Org Chem 2013; 78:12487-93. [DOI: 10.1021/jo4021858] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Zhen Wang
- State
Key Laboratory on Elemento-organic Chemistry, Collaborative Innovation
Center of Chemical Science and Engineering, Department of Chemistry, Nankai University, Tianjin 300071, China
| | - Hui Deng
- State
Key Laboratory on Elemento-organic Chemistry, Collaborative Innovation
Center of Chemical Science and Engineering, Department of Chemistry, Nankai University, Tianjin 300071, China
| | - Xin Li
- State
Key Laboratory on Elemento-organic Chemistry, Collaborative Innovation
Center of Chemical Science and Engineering, Department of Chemistry, Nankai University, Tianjin 300071, China
| | - Pengju Ji
- Center
of Basic Molecular Science, Department of Chemistry, Tsinghua University, Beijing 100083, China
| | - Jin-Pei Cheng
- State
Key Laboratory on Elemento-organic Chemistry, Collaborative Innovation
Center of Chemical Science and Engineering, Department of Chemistry, Nankai University, Tianjin 300071, China
- Center
of Basic Molecular Science, Department of Chemistry, Tsinghua University, Beijing 100083, China
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35
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Khan IA, Balaramnavar VM, Saxena AK. Identification and optimization of novel pyrimido-isoxazolidine and oxazine as selective hydride donors. Tetrahedron 2012. [DOI: 10.1016/j.tet.2012.09.105] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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36
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Deng H, Li X, Chu Y, He J, Cheng JP. Standard pKa Scales of Carbon-Centered Indicator Acids in Ionic Liquids: Effect of Media and Structural Implication. J Org Chem 2012; 77:7291-8. [DOI: 10.1021/jo300941g] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Hui Deng
- State Key Laboratory on Elemento-organic Chemistry, Department
of Chemistry, Nankai University, Tianjin
300071, China
| | - Xin Li
- State Key Laboratory on Elemento-organic Chemistry, Department
of Chemistry, Nankai University, Tianjin
300071, China
| | - Yuan Chu
- State Key Laboratory on Elemento-organic Chemistry, Department
of Chemistry, Nankai University, Tianjin
300071, China
| | - Jiaqi He
- State Key Laboratory on Elemento-organic Chemistry, Department
of Chemistry, Nankai University, Tianjin
300071, China
| | - Jin-Pei Cheng
- State Key Laboratory on Elemento-organic Chemistry, Department
of Chemistry, Nankai University, Tianjin
300071, China
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37
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Zheng C, You SL. Transfer hydrogenation with Hantzsch esters and related organic hydride donors. Chem Soc Rev 2012; 41:2498-518. [PMID: 22282764 DOI: 10.1039/c1cs15268h] [Citation(s) in RCA: 438] [Impact Index Per Article: 36.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In recent years, Hantzsch esters and their related organic hydride donors have been widely utilized in biomimetic approaches of asymmetric transfer hydrogenation (ATH) reactions. Various compounds containing C=C, C=N and C=O unsaturated functionalities could be reduced in the presence of organocatalysts or transition metal complexes, affording versatile chiral building blocks in high yields and excellent enantioselectivities under mild conditions. In this critical review, recent advances in this area are summarized and classified according to unsaturated functional groups being reduced and catalytic systems employed (91 references).
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Affiliation(s)
- Chao Zheng
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China
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38
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Zhu XQ, Mu YY, Li XT. What are the differences between ascorbic acid and NADH as hydride and electron sources in vivo on thermodynamics, kinetics, and mechanism? J Phys Chem B 2011; 115:14794-811. [PMID: 22035071 DOI: 10.1021/jp2067974] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Ascorbic acid (AscH(2)) and dihydronicotinamide adenine dinucleotide (NADH) are two very important natural redox cofactors, which can be used as hydride, electron, and hydrogen atom sources to take part in many important bioreduction processes in vivo. The differences of the two natural reducing agents as hydride, hydrogen atom, and electron donors in thermodynamics, kinetics, and mechanisms were examined by using 5,6-isopropylidene ascorbate (iAscH(-)) and β-D-glucopyranosyl-1,4-dihydronicotinamide acetate (GluNAH) as their models, respectively. The results show that the hydride-donating ability of iAscH(-) is smaller than that of GluNAH by 6.0 kcal/mol, but the electron-donating ability and hydrogen-donating ability of iAscH(-) are larger than those of GluNAH by 20.8 and 8.4 kcal/mol, respectively, which indicates that iAscH(-) is a good electron donor and a good hydrogen atom donor, but GluNAH is a good hydride donor. The kinetic intrinsic barrier energy of iAscH(-) to release hydride anion in acetonitrile is larger than that of GluNAH to release hydride anion in acetonitrile by 6.9 kcal/mol. The mechanisms of hydride transfer from iAscH(-) and GluNAH to phenylxanthium perchlorate (PhXn(+)), a well-known hydride acceptor, were examined, and the results show that hydride transfer from GluNAH adopted a one-step mechanism, but the hydride transfer from iAscH(-) adopted a two-step mechanism (e-H(•)). The thermodynamic relation charts (TRC) of the iAscH(-) family (including iAscH(-), iAscH(•), iAsc(•-), and iAsc) and of the GluNAH family (including GluNAH, GluNAH(•+), GluNA(•), and GluNA(+)) in acetonitrile were constructed as Molecule ID Cards of iAscH(-) and of GluNAH in acetonitrile. By using the Molecule ID Cards of iAscH(-) and GluNAH, the character chemical properties not only of iAscH(-) and GluNAH but also of the various reaction intermediates of iAscH(-) and GluNAH all have been quantitatively diagnosed and compared. It is clear that these comparisons of the thermodynamics, kinetics, and mechanisms between iAscH(-) and GluNAH as hydride and electron donors in acetonitrile should be quite important and valuable to diagnose and understand the different roles and functions of ascorbic acid and NADH as hydride, hydrogen atom, and electron sources in vivo.
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Affiliation(s)
- Xiao-Qing Zhu
- State Key Laboratory of Elemento-Organic Chemistry, Department of Chemistry, Nankai University, Tianjin, China.
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39
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Carbonylative formation of N-acetyl-2,6-difluorobenzamide through N–H bond activation of 2,6-difluorobenzamide with Ni(II) complex supported with phosphine ligands. J Organomet Chem 2011. [DOI: 10.1016/j.jorganchem.2011.04.035] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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40
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Andrews RS, Becker JJ, Gagné MR. Intermolecular Addition of Glycosyl Halides to Alkenes Mediated by Visible Light. Angew Chem Int Ed Engl 2010; 49:7274-6. [DOI: 10.1002/anie.201004311] [Citation(s) in RCA: 232] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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41
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Andrews RS, Becker JJ, Gagné MR. Intermolecular Addition of Glycosyl Halides to Alkenes Mediated by Visible Light. Angew Chem Int Ed Engl 2010. [DOI: 10.1002/ange.201004311] [Citation(s) in RCA: 77] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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42
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Zhu XQ, Tan Y, Cao CT. Thermodynamic Diagnosis of the Properties and Mechanism of Dihydropyridine-Type Compounds as Hydride Source in Acetonitrile with “Molecule ID Card”. J Phys Chem B 2010; 114:2058-75. [DOI: 10.1021/jp911137p] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Xiao-Qing Zhu
- State Key Laboratory of Elemento-Organic Chemistry, Department of Chemistry, Nankai University, Tianjin 300071, China
| | - Yue Tan
- State Key Laboratory of Elemento-Organic Chemistry, Department of Chemistry, Nankai University, Tianjin 300071, China
| | - Chao-Tun Cao
- State Key Laboratory of Elemento-Organic Chemistry, Department of Chemistry, Nankai University, Tianjin 300071, China
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Affiliation(s)
- Jens Hartung
- Fachbereich Chemie, Organische Chemie, Technische Universität Kaiserslautern, Erwin-Schrödinger-Strasse, D-67663 Kaiserslautern, Germany.
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Valenzuela V, Santander P, Camargo C, Squella JA, López-Alarcón C, Núñez-Vergara LJ. 1,4-Dihydropyridines: Reactivity of Nitrosoaryl and Nitroaryl Derivatives with Alkylperoxyl Radicals and ABTS Radical Cation. Free Radic Res 2009; 38:715-27. [PMID: 15453637 DOI: 10.1080/10715760410001711486] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
In the present paper, a direct quenching of radical species by a number of synthesized nitrosoaryl 1,4-dihydropyridines and their parent nitroaryl 1,4-dihydropyridines was determined in aqueous media at pH 7.4. These two series of compounds were compared with the C-4 unsubstituted 1,4-dihydropyridines derivatives and the corresponding C-4 aryl substituted 1,4-dihydropyridines derivatives. Kinetic rate constants were assessed by UV-Vis spectroscopy. Nitrosoaryl derivatives were more reactive than the parent nitroaryl 1,4-dihydropyridines. Our results strongly support the assumption that the reactivity between the synthesized 1,4-dihydropyridines derivatives with alkylperoxyl radicals involves electron transfer reactions, which is documented by the presence of pyridine as final product of reaction and the complete oxidation of the nitroso group to give rise the nitro group in the case of the nitrosoaryl 1,4-dihydropyridines derivatives.
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Affiliation(s)
- V Valenzuela
- Laboratory of Biolectrochemistry, Faculty of Chemical and Pharmaceutical Sciences, University of Chile, P.O. Box 233, Santiago, Chile
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Salazar R, Navarrete-Encina PA, Squella JA, Camargo C, Núñez-Vergara LJ. Reactivity of C4-indolyl substituted 1,4-dihydropyridines toward superoxide anion (O2•) in dimethylsulfoxide. J PHYS ORG CHEM 2009. [DOI: 10.1002/poc.1453] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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46
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Singh L, Singh Ishar MP, Elango M, Subramanian V, Gupta V, Kanwal P. Synthesis of Unsymmetrical Substituted 1,4-Dihydropyridines through Thermal and Microwave Assisted [4+2] Cycloadditions of 1-Azadienes and Allenic Esters. J Org Chem 2008; 73:2224-33. [DOI: 10.1021/jo702548b] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Lakhwinder Singh
- Department of Pharmaceutical Sciences, Guru Nanak Dev University, Amritsar 143 005, Punjab, India, Chemical Laboratory, Central Leather Research Institute, Adyar, Chennai 600 020, Tamilnadu, India, and P. G. Department of Physics, University of Jammu, Jammu Tawi-180 006, India
| | - M. P. Singh Ishar
- Department of Pharmaceutical Sciences, Guru Nanak Dev University, Amritsar 143 005, Punjab, India, Chemical Laboratory, Central Leather Research Institute, Adyar, Chennai 600 020, Tamilnadu, India, and P. G. Department of Physics, University of Jammu, Jammu Tawi-180 006, India
| | - Munusamy Elango
- Department of Pharmaceutical Sciences, Guru Nanak Dev University, Amritsar 143 005, Punjab, India, Chemical Laboratory, Central Leather Research Institute, Adyar, Chennai 600 020, Tamilnadu, India, and P. G. Department of Physics, University of Jammu, Jammu Tawi-180 006, India
| | - Venkatesan Subramanian
- Department of Pharmaceutical Sciences, Guru Nanak Dev University, Amritsar 143 005, Punjab, India, Chemical Laboratory, Central Leather Research Institute, Adyar, Chennai 600 020, Tamilnadu, India, and P. G. Department of Physics, University of Jammu, Jammu Tawi-180 006, India
| | - Vivek Gupta
- Department of Pharmaceutical Sciences, Guru Nanak Dev University, Amritsar 143 005, Punjab, India, Chemical Laboratory, Central Leather Research Institute, Adyar, Chennai 600 020, Tamilnadu, India, and P. G. Department of Physics, University of Jammu, Jammu Tawi-180 006, India
| | - Priyanka Kanwal
- Department of Pharmaceutical Sciences, Guru Nanak Dev University, Amritsar 143 005, Punjab, India, Chemical Laboratory, Central Leather Research Institute, Adyar, Chennai 600 020, Tamilnadu, India, and P. G. Department of Physics, University of Jammu, Jammu Tawi-180 006, India
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Kumar Soni A, David Krupadanam GL, Srimannarayana G. Facile Synthesis of 7‐Methoxy‐2‐aryl‐3‐phenyl/or‐H‐8‐[2‐(4,6‐dimethyl‐3,5‐dicarbethoxy‐pyridyl)]‐4H‐1‐benzopyran‐4‐ones. SYNTHETIC COMMUN 2007. [DOI: 10.1080/00397910601133581] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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48
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Yáñez C, López-Alarcón C, Camargo C, Valenzuela V, Squella JA, Núñez-Vergara LJ. Structural effects on the reactivity 1,4-dihydropyridines with alkylperoxyl radicals and ABTS radical cation. Bioorg Med Chem 2004; 12:2459-68. [PMID: 15080941 DOI: 10.1016/j.bmc.2004.01.050] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2003] [Revised: 01/26/2004] [Accepted: 01/27/2004] [Indexed: 10/26/2022]
Abstract
A series of eight commercial C-4 substituted 1,4-dihydropyridines and other synthesized related compounds were tested for direct potential scavenger effect towards alkylperoxyl radicals and ABTS radical cation in aqueous Britton-Robinson buffer pH7.4. A direct quenching radical species was established. The tested 1,4-dihydropyridines were 8.3-fold more reactive towards alkylperoxyl radicals than ABTS cation radical, expressed by their corresponding kinetic rate constants. Furthermore, NPD a photolyte of nifedipine and the C-4 unsubstituted 1,4-DHP were the most reactive derivatives towards alkylperoxyl radicals. The pyridine derivative was confirmed by GC/MS technique as the final product of reaction. In consequence, the reduction of alkylperoxyl and ABTS radicals by 1,4-dihydropyridines involved an electron transfer process. Also, the participation of the hydrogen of the 1-position appears as relevant on the reactivity. Results of reactivity were compared with Trolox.
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Affiliation(s)
- C Yáñez
- Laboratory of Bioelectrochemistry, Faculty of Chemical and Pharmaceutical Sciences, University of Chile, PO Box 233, 8380492 Santiago, Chile
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Arguello J, Núñez-Vergara L, Sturm J, Squella J. Voltammetric oxidation of Hantzsch 1,4-dihydropyridines in protic media: substituent effect on positions 3,4,5 of the heterocyclic ring. Electrochim Acta 2004. [DOI: 10.1016/j.electacta.2004.05.037] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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50
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Hydrogen Transfer from Hantzsch 1,4-Dihydropyridines to Carbon-Carbon Double Bonds under Microwave Irradiation. Molecules 2002. [PMCID: PMC6146430 DOI: 10.3390/70700528] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
1,4-Dihydropyridines (DHPs) have been used in the reduction of carbon-carbon double bonds under microwave irradiation without solvent. The efficiency of the reactions is dramatically dependent on the steric effects in the DHPs and on the electronic effects in the olefins.
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