1
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Yang DS, Chen XL, Wu CY, Tang BC, Xiao YC, Wu YD, Wu AX. Synthesis of β,β-Dithioketones by Merging C-C and C-S Bond Cleavage in [1 + 1 + 1 + 1 + 1 + 1] Annulation. Org Lett 2024; 26:4340-4345. [PMID: 38743916 DOI: 10.1021/acs.orglett.4c01364] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/16/2024]
Abstract
An unconventional [1 + 1 + 1 + 1 + 1 + 1] annulation process was developed for the construction of β,β-dithioketones by merging C-C and C-S bond cleavage. In this reaction, rongalite concurrently served as triple C1 units, dual sulfur(II) synthons, and a reductant for the first time. Mechanism investigation indicated that the reaction involved the self-mediated valence state change of rongalite. By performing this step-economical method, the challenging construction of C5-substituted 1,3-dithiane can be achieved under mild and simple conditions.
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Affiliation(s)
- Dong-Sheng Yang
- National Key Laboratory of Green Pesticide, International Joint Research Center for Intelligent Biosensor Technology and Health, College of Chemistry, Central China Normal University, Wuhan, Hubei 430079, China
| | - Xiang-Long Chen
- National Key Laboratory of Green Pesticide, International Joint Research Center for Intelligent Biosensor Technology and Health, College of Chemistry, Central China Normal University, Wuhan, Hubei 430079, China
| | - Chun-Yan Wu
- National Key Laboratory of Green Pesticide, International Joint Research Center for Intelligent Biosensor Technology and Health, College of Chemistry, Central China Normal University, Wuhan, Hubei 430079, China
| | - Bo-Cheng Tang
- State Key Laboratory of Chemical Biology and Drug Discovery, Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Kowloon, Hong Kong SAR, China
| | - Yong-Cheng Xiao
- National Key Laboratory of Green Pesticide, International Joint Research Center for Intelligent Biosensor Technology and Health, College of Chemistry, Central China Normal University, Wuhan, Hubei 430079, China
| | - Yan-Dong Wu
- National Key Laboratory of Green Pesticide, International Joint Research Center for Intelligent Biosensor Technology and Health, College of Chemistry, Central China Normal University, Wuhan, Hubei 430079, China
| | - An-Xin Wu
- National Key Laboratory of Green Pesticide, International Joint Research Center for Intelligent Biosensor Technology and Health, College of Chemistry, Central China Normal University, Wuhan, Hubei 430079, China
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, P. R. China
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2
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Rourke MJ, Wang CT, Schull CR, Scheidt KA. Acyl Azolium-Photoredox-Enabled Synthesis of β-Keto Sulfides. ACS Catal 2023; 13:7987-7994. [PMID: 37969469 PMCID: PMC10651059 DOI: 10.1021/acscatal.3c01558] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2023]
Abstract
α-Heteroatom functionalization is a key strategy for C-C bond formation in organic synthesis, as exemplified by the addition of a nucleophile to electrophilic functional groups, such as iminium ions; oxocarbenium ions; and their sulfur analogues, sulfenium ions. We envisioned a photoredox-enabled radical Pummerer-type reaction realized through the single-electron oxidation of a sulfide. Following this oxidative event, α-deprotonation would afford α-thio radicals that participate in radical-radical coupling reactions with azolium-bound ketyl radicals, thereby accessing a commonly proposed mechanistic intermediate of the radical-radical coupling en route to functionalized additive Pummerer products. This system provides a complementary synthetic approach to highly functionalized sulfurous products, including modification of methionine residues in peptides, and beckons further exploration in C-C bond formations previously limited in the standard two-electron process.
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Affiliation(s)
- Michael J Rourke
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - Charles T Wang
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - Cullen R Schull
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - Karl A Scheidt
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
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3
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Lewis base promoted photoredox catalyzed addition of allylic radicals to Michael acceptors. Tetrahedron Lett 2022. [DOI: 10.1016/j.tetlet.2022.154057] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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4
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Caldarelli M, Laze L, Piazza L, Caputo G, De Amici M, Papeo G. Use of acridinium-based photocatalyst in the Giese-type coupling of arylboronic acids with electron poor olefins. Tetrahedron Lett 2022. [DOI: 10.1016/j.tetlet.2022.153978] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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5
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Tan Z, Zhu S, Liu Y, Feng X. Photoinduced Chemo‐, Site‐ and Stereoselective α‐C(sp
3
)−H Functionalization of Sulfides. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202203374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Zhenda Tan
- Key Laboratory of Chemical Genomics School of Chemical Biology and Biotechnology Peking University Shenzhen Graduate School Shenzhen 518055 China
- Institute of Chemical Biology Shenzhen Bay Laboratory Shenzhen 518132 China
| | - Shibo Zhu
- Institute of Chemical Biology Shenzhen Bay Laboratory Shenzhen 518132 China
| | - Yangbin Liu
- Institute of Chemical Biology Shenzhen Bay Laboratory Shenzhen 518132 China
| | - Xiaoming Feng
- Institute of Chemical Biology Shenzhen Bay Laboratory Shenzhen 518132 China
- Key Laboratory of Green Chemistry & Technology Ministry of Education College of Chemistry Sichuan University Chengdu 610064 China
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6
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Guo F, Wang H, Ye X, Tan CH. Advanced Synthesis Using Photocatalysis Involved Dual Catalytic System. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Fenfen Guo
- Zhejiang University of Technology College of Pharmaceutical Science CHINA
| | - Hong Wang
- Zhejiang University of Technology College of Pharmaceutical Science CHINA
| | - Xinyi Ye
- Zhejiang University of Technology College of Pharmaceutical Science 18 Chaowang Road 310014 Hangzhou CHINA
| | - Choon-Hong Tan
- Nanyang Technological University School of Physical and Mathematical Sciences SINGAPORE
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7
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Tan Z, Zhu S, Liu Y, Feng X. Photoinduced Chemo-, Site- and Stereoselective α-C(sp 3 )-H Functionalization of Sulfides. Angew Chem Int Ed Engl 2022; 61:e202203374. [PMID: 35445505 DOI: 10.1002/anie.202203374] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Indexed: 11/06/2022]
Abstract
The ubiquity of sulfur-containing molecules in biologically active natural products and pharmaceuticals has long attracted synthetic chemists to develop efficient strategies towards their synthesis. The strategy of direct α-C(sp3 )-H modification of sulfides provides a streamlining access to complex sulfur-containing molecules. Herein, we report a photoinduced chemo-, site- and stereoselective α-C(sp3 )-H functionalization of sulfides using isatins as the photoredox reagent and coupling partner catalyzed by a chiral gallium(III)-N,N'-dioxide complex. The reaction proceeds through a verified single-electron transfer (SET) mechanism with high efficiency, excellent functional group tolerance, as well as a broad substrate scope. Importantly, this cross-coupling protocol is highly selective for the direct late-stage functionalization of methionine-related peptides, regardless of the inherent structural similarity and complexity of diverse residues.
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Affiliation(s)
- Zhenda Tan
- Key Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Peking University, Shenzhen Graduate School, Shenzhen, 518055, China.,Institute of Chemical Biology, Shenzhen Bay Laboratory, Shenzhen, 518132, China
| | - Shibo Zhu
- Institute of Chemical Biology, Shenzhen Bay Laboratory, Shenzhen, 518132, China
| | - Yangbin Liu
- Institute of Chemical Biology, Shenzhen Bay Laboratory, Shenzhen, 518132, China
| | - Xiaoming Feng
- Institute of Chemical Biology, Shenzhen Bay Laboratory, Shenzhen, 518132, China.,Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064, China
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8
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Forbes KC, Marie Crooke A, Lee Y, Kawada M, Shamskhou KM, Zhang RA, Cannon JS. Photoredox-Catalyzed Oxidation of Anions for the Atom-Economical Hydro-, Amido-, and Dialkylation of Alkenes. J Org Chem 2022; 87:3498-3510. [PMID: 35133155 PMCID: PMC8898273 DOI: 10.1021/acs.joc.1c03055] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Photoredox catalysis has become a powerful method to generate free radical intermediates in organic synthesis. This report describes the use of photoredox catalysis to directly oxidize common nucleophilic anions to access electrophilic 1,3-dicarbonyl and amidyl radical intermediates. First, conjugate bases of 1,3-dicarbonyls were oxidized to neutral radical species for intramolecular hydro- and dialkylation of alkenes. This overall redox-neutral process provided cyclopentanone products in excellent yields (up to 96%). The scope included a variety of styrene radical acceptors and products with newly formed vicinal quaternary carbons. This process was then extended to the synthesis of pyrrolidinones by alkene amidoalkylation that proceeded via N-aryl amidyl radical intermediates in good yield (up to 85%). These reactions were characterized by their mild conditions, high atom economy, and the absence of stoichiometric byproducts. Mechanistic and computational studies supported a stepwise proton-coupled electron transfer mechanism, where an "electron borrowing" photocatalyst oxidizes an anion and reduces a benzylic radical after bond formation.
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9
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Photoredox-Catalyzed Giese Reactions: Decarboxylative Additions to Cyclic Vinylogous Amides and Esters. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27020417. [PMID: 35056732 PMCID: PMC8777773 DOI: 10.3390/molecules27020417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Revised: 12/15/2021] [Accepted: 12/22/2021] [Indexed: 11/29/2022]
Abstract
An effective strategy has been developed for the photoredox-catalyzed decarboxylative addition of cyclic amino acids to both vinylogous amides and esters leading to uniquely substituted heterocycles. The additions take place exclusively trans to the substituent present on the dihydropyridone ring affording stereochemical control about the new carbon-carbon bond. These reactions are operationally simplistic and afford the desired products in good to excellent isolated yields.
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10
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Badir SO, Lipp A, Krumb M, Cabrera-Afonso MJ, Kammer LM, Wu VE, Huang M, Csakai A, Marcaurelle LA, Molander GA. Photoredox-mediated hydroalkylation and hydroarylation of functionalized olefins for DNA-encoded library synthesis. Chem Sci 2021; 12:12036-12045. [PMID: 34667569 PMCID: PMC8457374 DOI: 10.1039/d1sc03191k] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2021] [Accepted: 08/04/2021] [Indexed: 12/29/2022] Open
Abstract
DNA-encoded library (DEL) technology features a time- and cost-effective interrogation format for the discovery of therapeutic candidates in the pharmaceutical industry. To develop DEL platforms, the implementation of water-compatible transformations that facilitate the incorporation of multifunctional building blocks (BBs) with high C(sp3) carbon counts is integral for success. In this report, a decarboxylative-based hydroalkylation of DNA-conjugated trifluoromethyl-substituted alkenes enabled by single-electron transfer (SET) and subsequent hydrogen atom termination through electron donor-acceptor (EDA) complex activation is detailed. In a further photoredox-catalyzed hydroarylation protocol, the coupling of functionalized, electronically unbiased olefins is achieved under air and within minutes of blue light irradiation through the intermediacy of reactive (hetero)aryl radical species with full retention of the DNA tag integrity. Notably, these processes operate under mild reaction conditions, furnishing complex structural scaffolds with a high density of pendant functional groups.
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Affiliation(s)
- Shorouk O Badir
- Roy and Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania 231 South 34th Street Philadelphia Pennsylvania 19104-6323 USA
| | - Alexander Lipp
- Roy and Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania 231 South 34th Street Philadelphia Pennsylvania 19104-6323 USA
| | - Matthias Krumb
- Roy and Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania 231 South 34th Street Philadelphia Pennsylvania 19104-6323 USA
| | - María Jesús Cabrera-Afonso
- Roy and Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania 231 South 34th Street Philadelphia Pennsylvania 19104-6323 USA
| | - Lisa Marie Kammer
- Roy and Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania 231 South 34th Street Philadelphia Pennsylvania 19104-6323 USA
| | - Victoria E Wu
- Encoded Library Technologies/NCE Molecular Discovery, R&D Medicinal Science and Technology, GlaxoSmithKline 200 Cambridge Park Drive Cambridge MA 02140 USA
| | - Minxue Huang
- Encoded Library Technologies/NCE Molecular Discovery, R&D Medicinal Science and Technology, GlaxoSmithKline 200 Cambridge Park Drive Cambridge MA 02140 USA
| | - Adam Csakai
- Encoded Library Technologies/NCE Molecular Discovery, R&D Medicinal Science and Technology, GlaxoSmithKline 200 Cambridge Park Drive Cambridge MA 02140 USA
| | - Lisa A Marcaurelle
- Encoded Library Technologies/NCE Molecular Discovery, R&D Medicinal Science and Technology, GlaxoSmithKline 200 Cambridge Park Drive Cambridge MA 02140 USA
| | - Gary A Molander
- Roy and Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania 231 South 34th Street Philadelphia Pennsylvania 19104-6323 USA
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11
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Alfonzo E, Hande SM. α-Heteroarylation of Thioethers via Photoredox and Weak Brønsted Base Catalysis. Org Lett 2021; 23:6115-6120. [PMID: 34297584 DOI: 10.1021/acs.orglett.1c02151] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
We report the C-H activation of thioethers to α-thio alkyl radicals and their addition to N-methoxyheteroarenium salts for the redox-neutral synthesis of α-heteroaromatic thioethers. Studies are consistent with a two-step activation mechanism, where oxidation of thioethers to sulfide radical cations by a photoredox catalyst is followed by α-C-H deprotonation by a weak Brønsted base catalyst to afford α-thio alkyl radicals. Further, N-methoxyheteroarenium salts play additional roles as a source of methoxyl radical that contributes to α-thio alkyl radical generation and a sacrificial oxidant that regenerates the photoredox catalytic cycle.
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Affiliation(s)
- Edwin Alfonzo
- Medicinal Chemistry, Research and Early Development, Oncology R&D, AstraZeneca, Waltham, Massachusetts 02451, United States
| | - Sudhir M Hande
- Medicinal Chemistry, Research and Early Development, Oncology R&D, AstraZeneca, Waltham, Massachusetts 02451, United States
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12
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Xiao Q, Zhang H, Li JH, Jian JX, Tong QX, Zhong JJ. Directing-Group-Assisted Markovnikov-Selective Hydrothiolation of Styrenes with Thiols by Photoredox/Cobalt Catalysis. Org Lett 2021; 23:3604-3609. [PMID: 33843237 DOI: 10.1021/acs.orglett.1c00999] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
In contrast with the well-developed radical thiol-ene reaction to access anti-Markovnikov-type products, the research on the catalytic Markovnikov-selective hydrothiolation of alkenes is very restricted. Because of the catalyst poisoning of metal catalysts by organosulfur compounds, limited examples of transition-metal-catalyzed thiol-ene reactions have been reported. However, in this work, a directing-group-assisted hydrothiolation of styrenes with thiols by photoredox/cobalt catalysis is found to proceed smoothly to afford Markovnikov-type sulfides with excellent regioselectivity.
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Affiliation(s)
- Qian Xiao
- Department of Chemistry, Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province, and Chemistry and Chemical Engineering Laboratory of Guangdong Province, Shantou University, Shantou, Guangdong 515063, P. R. China.,School of Chemistry and Environmental Engineering, Hanshan Normal University, Chaozhou, Guangdong 521041, P. R. China
| | - Hong Zhang
- Department of Chemistry, Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province, and Chemistry and Chemical Engineering Laboratory of Guangdong Province, Shantou University, Shantou, Guangdong 515063, P. R. China
| | - Jing-Hong Li
- Department of Chemistry, Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province, and Chemistry and Chemical Engineering Laboratory of Guangdong Province, Shantou University, Shantou, Guangdong 515063, P. R. China
| | - Jing-Xin Jian
- Department of Chemistry, Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province, and Chemistry and Chemical Engineering Laboratory of Guangdong Province, Shantou University, Shantou, Guangdong 515063, P. R. China
| | - Qing-Xiao Tong
- Department of Chemistry, Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province, and Chemistry and Chemical Engineering Laboratory of Guangdong Province, Shantou University, Shantou, Guangdong 515063, P. R. China
| | - Jian-Ji Zhong
- Department of Chemistry, Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province, and Chemistry and Chemical Engineering Laboratory of Guangdong Province, Shantou University, Shantou, Guangdong 515063, P. R. China
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13
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Alfonzo E, Hande SM. Photoredox and Weak Brønsted Base Dual Catalysis: Alkylation of α-Thio Alkyl Radicals. ACS Catal 2020. [DOI: 10.1021/acscatal.0c03851] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Edwin Alfonzo
- Medicinal Chemistry, Research and Early Development, Oncology R&D, AstraZeneca, Waltham, Massachusetts 02451, United States
| | - Sudhir M. Hande
- Medicinal Chemistry, Research and Early Development, Oncology R&D, AstraZeneca, Waltham, Massachusetts 02451, United States
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14
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Donabauer K, Murugesan K, Rozman U, Crespi S, König B. Photocatalytic Reductive Radical-Polar Crossover for a Base-Free Corey-Seebach Reaction. Chemistry 2020; 26:12945-12950. [PMID: 32686166 PMCID: PMC7589390 DOI: 10.1002/chem.202003000] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Revised: 07/15/2020] [Indexed: 01/07/2023]
Abstract
A metal-free generation of carbanion nucleophiles is of prime importance in organic synthesis. Herein we report a photocatalytic approach to the Corey-Seebach reaction. The presented method operates under mild redox-neutral and base-free conditions giving the desired product with high functional group tolerance. The reaction is enabled by the combination of photo- and hydrogen atom transfer (HAT) catalysis. This catalytic merger allows a C-H to carbanion activation by the abstraction of a hydrogen atom followed by radical reduction. The generated nucleophilic intermediate is then capable of adding to carbonyl electrophiles. The obtained dithiane can be easily converted to the valuable α-hydroxy carbonyl in a subsequent step. The proposed reaction mechanism is supported by emission quenching, radical-radical homocoupling and deuterium labeling studies as well as by calculated redox-potentials and bond strengths.
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Affiliation(s)
- Karsten Donabauer
- Department of Organic ChemistryUniversity of RegensburgUniversitätsstraße 3193053RegensburgGermany
| | - Kathiravan Murugesan
- Department of Organic ChemistryUniversity of RegensburgUniversitätsstraße 3193053RegensburgGermany
| | - Urša Rozman
- Department of Organic ChemistryUniversity of RegensburgUniversitätsstraße 3193053RegensburgGermany
| | - Stefano Crespi
- Stratingh Institute for ChemistryUniversity of GroningenNijenborgh 49747 AGGroningenThe Netherlands
| | - Burkhard König
- Department of Organic ChemistryUniversity of RegensburgUniversitätsstraße 3193053RegensburgGermany
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15
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Ueda M, Kato Y, Taniguchi N, Morisaki T. High Reactivity of α-Boryl Radical of Potassium Alkyltrifluoroborate in Atom-Transfer Radical Addition. Org Lett 2020; 22:6234-6238. [PMID: 32584583 DOI: 10.1021/acs.orglett.0c01807] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
We found that the α-boryl radical of potassium alkyltrifluoroborate shows higher reactivity compared to the α-boryl radicals of alkylboronic acid pinacol ester and alkyl N-methyl imidodiacetic acid (MIDA) boronate in the halogen atom abstraction step of atom-transfer radical addition (ATRA) between alkyl bromide and vinylborons. In this research, an ATRA of alkyl halides with potassium vinyltrifluoroborate furnished unique alkylborons, which are difficult to synthesize by other methods.
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Affiliation(s)
- Mitsuhiro Ueda
- Department of Chemistry, Graduate School of Science, Osaka Prefecture University, Sakai, Osaka 599-8531, Japan
| | - Yuri Kato
- Department of Chemistry, Graduate School of Science, Osaka Prefecture University, Sakai, Osaka 599-8531, Japan
| | - Naoya Taniguchi
- Department of Chemistry, Graduate School of Science, Osaka Prefecture University, Sakai, Osaka 599-8531, Japan
| | - Takahiro Morisaki
- Department of Chemistry, Graduate School of Science, Osaka Prefecture University, Sakai, Osaka 599-8531, Japan
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16
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André‐Joyaux E, Kuzovlev A, Tappin NDC, Renaud P. A General Approach to Deboronative Radical Chain Reactions with Pinacol Alkylboronic Esters. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202004012] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Emy André‐Joyaux
- University of Bern Department of Chemistry and Biochemistry Freiestrasse 3 3012 Bern Switzerland
| | - Andrey Kuzovlev
- University of Bern Department of Chemistry and Biochemistry Freiestrasse 3 3012 Bern Switzerland
| | - Nicholas D. C. Tappin
- University of Bern Department of Chemistry and Biochemistry Freiestrasse 3 3012 Bern Switzerland
| | - Philippe Renaud
- University of Bern Department of Chemistry and Biochemistry Freiestrasse 3 3012 Bern Switzerland
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17
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André‐Joyaux E, Kuzovlev A, Tappin NDC, Renaud P. A General Approach to Deboronative Radical Chain Reactions with Pinacol Alkylboronic Esters. Angew Chem Int Ed Engl 2020; 59:13859-13864. [DOI: 10.1002/anie.202004012] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Revised: 04/23/2020] [Indexed: 11/11/2022]
Affiliation(s)
- Emy André‐Joyaux
- University of Bern Department of Chemistry and Biochemistry Freiestrasse 3 3012 Bern Switzerland
| | - Andrey Kuzovlev
- University of Bern Department of Chemistry and Biochemistry Freiestrasse 3 3012 Bern Switzerland
| | - Nicholas D. C. Tappin
- University of Bern Department of Chemistry and Biochemistry Freiestrasse 3 3012 Bern Switzerland
| | - Philippe Renaud
- University of Bern Department of Chemistry and Biochemistry Freiestrasse 3 3012 Bern Switzerland
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18
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Zhang L, Chu Y, Ma P, Zhao S, Li Q, Chen B, Hong X, Sun J. Visible-light-mediated photocatalytic cross-coupling of acetenyl ketones with benzyl trifluoroborate. Org Biomol Chem 2020; 18:1073-1077. [PMID: 31960883 DOI: 10.1039/c9ob02624j] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
In this report, we describe a simple visible light-triggered Barbier-type reaction by employing acetenyl ketones with benzyl trifluoroborates. Through a radical-radical cross-coupling process, this photocatalytic protocol furnished a wide range of tertiary propargyl alcohols. Mechanistic investigation indicated that proton-coupled electron transfer (PCET) might be involved in the photochemical transformations.
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Affiliation(s)
- Lingchun Zhang
- Department of Pharmacy, Henan Provincial People's Hospital; Zhengzhou University People's Hospital, Zhengzhou, Henan, 450003, P. R. China.
| | - Yanle Chu
- Department of Pharmacy, The Second Affiliated Hospital of Zhengzhou University, 450000, P. R. China
| | - Peizhi Ma
- Department of Pharmacy, Henan Provincial People's Hospital; Zhengzhou University People's Hospital, Zhengzhou, Henan, 450003, P. R. China.
| | - Shujuan Zhao
- Department of Pharmacy, Henan Provincial People's Hospital; Zhengzhou University People's Hospital, Zhengzhou, Henan, 450003, P. R. China.
| | - Qiaoyan Li
- Department of Pharmacy, Henan Provincial People's Hospital; Zhengzhou University People's Hospital, Zhengzhou, Henan, 450003, P. R. China.
| | - Boya Chen
- Department of Pharmacy, Henan Provincial People's Hospital; Zhengzhou University People's Hospital, Zhengzhou, Henan, 450003, P. R. China.
| | - Xuejiao Hong
- Department of Pharmacy, Henan Provincial People's Hospital; Zhengzhou University People's Hospital, Zhengzhou, Henan, 450003, P. R. China.
| | - Jun Sun
- Department of Pharmacy, Henan Provincial People's Hospital; Zhengzhou University People's Hospital, Zhengzhou, Henan, 450003, P. R. China.
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19
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Gong X, Yang M, Liu JB, He FS, Wu J. Photoinduced synthesis of alkylalkynyl sulfones through a reaction of potassium alkyltrifluoroborates, sulfur dioxide, and alkynyl bromides. Org Chem Front 2020. [DOI: 10.1039/d0qo00100g] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
A photoinduced reaction of potassium alkyltrifluoroborates, sodium metabisulfite, and alkynyl bromides under visible light irradiation at room temperature is developed.
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Affiliation(s)
- Xinxing Gong
- School of Pharmaceutical and Materials Engineering & Institute for Advanced Studies
- Taizhou University
- Taizhou 318000
- China
| | - Min Yang
- School of Pharmacy
- Gannan Medical University
- Ganzhou 341000
- China
| | - Jin-Biao Liu
- School of Metallurgical and Chemical Engineering
- Jiangxi University of Science and Technology
- Ganzhou 341000
- China
| | - Fu-Sheng He
- School of Pharmaceutical and Materials Engineering & Institute for Advanced Studies
- Taizhou University
- Taizhou 318000
- China
| | - Jie Wu
- School of Pharmaceutical and Materials Engineering & Institute for Advanced Studies
- Taizhou University
- Taizhou 318000
- China
- State Key Laboratory of Organometallic Chemistry
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20
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Koike T. Visible-Light Photoredox Catalysis: New Strategies for Radical Reactions. J SYN ORG CHEM JPN 2019. [DOI: 10.5059/yukigoseikyokaishi.77.414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Takashi Koike
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology
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21
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Cartier A, Levernier E, Corcé V, Fukuyama T, Dhimane A, Ollivier C, Ryu I, Fensterbank L. Carbonylation of Alkyl Radicals Derived from Organosilicates through Visible‐Light Photoredox Catalysis. Angew Chem Int Ed Engl 2019; 58:1789-1793. [DOI: 10.1002/anie.201811858] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2018] [Indexed: 12/21/2022]
Affiliation(s)
- Alex Cartier
- Department of ChemistryGraduate School of ScienceOsaka Prefecture University Sakai Osaka 599-8531 Japan
| | - Etienne Levernier
- Sorbonne UniversitéCNRSInstitut Parisien de Chimie Moléculaire 4 Place Jussieu, CC 229 75252 Paris Cedex 05 France
| | - Vincent Corcé
- Sorbonne UniversitéCNRSInstitut Parisien de Chimie Moléculaire 4 Place Jussieu, CC 229 75252 Paris Cedex 05 France
| | - Takahide Fukuyama
- Department of ChemistryGraduate School of ScienceOsaka Prefecture University Sakai Osaka 599-8531 Japan
| | - Anne‐Lise Dhimane
- Sorbonne UniversitéCNRSInstitut Parisien de Chimie Moléculaire 4 Place Jussieu, CC 229 75252 Paris Cedex 05 France
| | - Cyril Ollivier
- Sorbonne UniversitéCNRSInstitut Parisien de Chimie Moléculaire 4 Place Jussieu, CC 229 75252 Paris Cedex 05 France
| | - Ilhyong Ryu
- Department of ChemistryGraduate School of ScienceOsaka Prefecture University Sakai Osaka 599-8531 Japan
- Department of Applied ChemistryNational Chiao Tung University Hsinchu Taiwan
| | - Louis Fensterbank
- Sorbonne UniversitéCNRSInstitut Parisien de Chimie Moléculaire 4 Place Jussieu, CC 229 75252 Paris Cedex 05 France
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22
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Cartier A, Levernier E, Corcé V, Fukuyama T, Dhimane A, Ollivier C, Ryu I, Fensterbank L. Carbonylation of Alkyl Radicals Derived from Organosilicates through Visible‐Light Photoredox Catalysis. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201811858] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Alex Cartier
- Department of ChemistryGraduate School of ScienceOsaka Prefecture University Sakai Osaka 599-8531 Japan
| | - Etienne Levernier
- Sorbonne UniversitéCNRSInstitut Parisien de Chimie Moléculaire 4 Place Jussieu, CC 229 75252 Paris Cedex 05 France
| | - Vincent Corcé
- Sorbonne UniversitéCNRSInstitut Parisien de Chimie Moléculaire 4 Place Jussieu, CC 229 75252 Paris Cedex 05 France
| | - Takahide Fukuyama
- Department of ChemistryGraduate School of ScienceOsaka Prefecture University Sakai Osaka 599-8531 Japan
| | - Anne‐Lise Dhimane
- Sorbonne UniversitéCNRSInstitut Parisien de Chimie Moléculaire 4 Place Jussieu, CC 229 75252 Paris Cedex 05 France
| | - Cyril Ollivier
- Sorbonne UniversitéCNRSInstitut Parisien de Chimie Moléculaire 4 Place Jussieu, CC 229 75252 Paris Cedex 05 France
| | - Ilhyong Ryu
- Department of ChemistryGraduate School of ScienceOsaka Prefecture University Sakai Osaka 599-8531 Japan
- Department of Applied ChemistryNational Chiao Tung University Hsinchu Taiwan
| | - Louis Fensterbank
- Sorbonne UniversitéCNRSInstitut Parisien de Chimie Moléculaire 4 Place Jussieu, CC 229 75252 Paris Cedex 05 France
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23
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Zhu D, Zheng W, Zheng Y, Chang H, Xie H. A theoretical study on one-electron redox potentials of organotrifluoroborate anions. NEW J CHEM 2019. [DOI: 10.1039/c9nj01061k] [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
The E° values of different kinds of organotrifluoroborate anions were investigated by using the M05-2X method with a PCM–UAHF model.
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Affiliation(s)
- Danfeng Zhu
- College of Chemistry and Chemical Engineering
- Shanghai University of Engineering Science
- Shanghai 201620
- China
| | - Wenrui Zheng
- College of Chemistry and Chemical Engineering
- Shanghai University of Engineering Science
- Shanghai 201620
- China
| | - Yuanyuan Zheng
- College of Chemistry and Chemical Engineering
- Shanghai University of Engineering Science
- Shanghai 201620
- China
| | - Huifang Chang
- College of Chemistry and Chemical Engineering
- Shanghai University of Engineering Science
- Shanghai 201620
- China
| | - Hongyun Xie
- College of Chemistry and Chemical Engineering
- Shanghai University of Engineering Science
- Shanghai 201620
- China
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24
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Liu W, Liu P, Lv L, Li CJ. Metal-Free and Redox-Neutral Conversion of Organotrifluoroborates into Radicals Enabled by Visible Light. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201807181] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Wenbo Liu
- Department of Chemistry and FRQNT Centre for Green Chemistry and Catalysis; McGill University; 801 Sherbrooke St. W. Montreal Quebec H3A 0B8 Canada
| | - Peng Liu
- Department of Chemistry and FRQNT Centre for Green Chemistry and Catalysis; McGill University; 801 Sherbrooke St. W. Montreal Quebec H3A 0B8 Canada
- Ministry of Education Key Laboratory of Combinatorial Biosynthesis and Drug Discovery; Hubei Provincial Engineering and Technology Research Center for Fluorinated Pharmaceuticals; School of Pharmaceutical Sciences; Wuhan University; Wuhan 430071 China
| | - Leiyang Lv
- Department of Chemistry and FRQNT Centre for Green Chemistry and Catalysis; McGill University; 801 Sherbrooke St. W. Montreal Quebec H3A 0B8 Canada
| | - Chao-Jun Li
- Department of Chemistry and FRQNT Centre for Green Chemistry and Catalysis; McGill University; 801 Sherbrooke St. W. Montreal Quebec H3A 0B8 Canada
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25
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Liu W, Liu P, Lv L, Li CJ. Metal-Free and Redox-Neutral Conversion of Organotrifluoroborates into Radicals Enabled by Visible Light. Angew Chem Int Ed Engl 2018; 57:13499-13503. [PMID: 30146767 DOI: 10.1002/anie.201807181] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2018] [Revised: 07/13/2018] [Indexed: 11/12/2022]
Abstract
Converting organoboron compounds into the corresponding radicals has broad synthetic applications in organic chemistry. To achieve these transformations, various strong oxidants such as Mn(OAc)3 , AgNO3 /K2 S2 O8 , and Cu(OAc)2 , in stoichiometric amounts are required, proceeding by a single-electron transfer mechanism. Established herein is a distinct strategy for generating both aryl and alkyl radicals from organotrifluoroborates through an SH 2 process. This strategy is enabled by using water as the solvent, visible light as the energy input, and diacetyl as the promoter in the absence of any metal catalyst or redox reagent, thereby eliminating metal waste. To demonstrate its synthetic utility, an efficient acetylation to prepare valuable aryl (alkyl) methyl ketones is described and applications to construct C-C, C-I, C-Br, and C-S bonds are also feasible. Experimental evidence suggests that triplet diacetyl serves as the key intermediate in this process.
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Affiliation(s)
- Wenbo Liu
- Department of Chemistry and FRQNT Centre for Green Chemistry and Catalysis, McGill University, 801 Sherbrooke St. W., Montreal, Quebec, H3A 0B8, Canada
| | - Peng Liu
- Department of Chemistry and FRQNT Centre for Green Chemistry and Catalysis, McGill University, 801 Sherbrooke St. W., Montreal, Quebec, H3A 0B8, Canada.,Ministry of Education Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Hubei Provincial Engineering and Technology Research Center for Fluorinated Pharmaceuticals, School of Pharmaceutical Sciences, Wuhan University, Wuhan, 430071, China
| | - Leiyang Lv
- Department of Chemistry and FRQNT Centre for Green Chemistry and Catalysis, McGill University, 801 Sherbrooke St. W., Montreal, Quebec, H3A 0B8, Canada
| | - Chao-Jun Li
- Department of Chemistry and FRQNT Centre for Green Chemistry and Catalysis, McGill University, 801 Sherbrooke St. W., Montreal, Quebec, H3A 0B8, Canada
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26
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ElMarrouni A, Ritts CB, Balsells J. Silyl-mediated photoredox-catalyzed Giese reaction: addition of non-activated alkyl bromides. Chem Sci 2018; 9:6639-6646. [PMID: 30310596 PMCID: PMC6115631 DOI: 10.1039/c8sc02253d] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2018] [Accepted: 07/06/2018] [Indexed: 12/23/2022] Open
Abstract
The emergence of photoredox catalysis has enabled the discovery of mild and efficient conditions for the generation of a variety of radical reaction platforms. Herein is disclosed the development of a conjugate addition reaction of non-activated alkyl bromides to Michael acceptors under visible-light photoredox catalysis. Optimization of the reaction was achieved using high-throughput experimentation (HTE) tools to enable the identification of mild, general and practical reaction conditions. A diverse set of alkyl bromides was successfully added to cyclic or acyclic α,β-unsaturated esters and amides. The features of this transformation allowed also access to a key intermediate of Vorinostat®, an HDAC inhibitor used to fight cancer and HIV.
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Affiliation(s)
- Abdellatif ElMarrouni
- Department of Discovery Chemistry , MRL , Merck & Co., Inc. , 770 Sumneytown Pike , West Point , Pennsylvania 19486 , USA .
| | - Casey B Ritts
- Department of Process Research & Development , MRL , Merck & Co., Inc. , 770 Sumneytown Pike , West Point , Pennsylvania 19486 , USA .
| | - Jaume Balsells
- Department of Process Research & Development , MRL , Merck & Co., Inc. , 770 Sumneytown Pike , West Point , Pennsylvania 19486 , USA .
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27
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Kublicki M, Durka K, Kliś T. Merging photoredox catalysis with allylboration. The photochemical perfluoroalkylation of unsaturated potassium alkyltrifluoroborates and synthesis of fluorinated alcohols. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.05.086] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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28
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Marzo L, Pagire SK, Reiser O, König B. Visible-Light Photocatalysis: Does It Make a Difference in Organic Synthesis? Angew Chem Int Ed Engl 2018; 57:10034-10072. [PMID: 29457971 DOI: 10.1002/anie.201709766] [Citation(s) in RCA: 1143] [Impact Index Per Article: 190.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2017] [Revised: 01/12/2018] [Indexed: 12/12/2022]
Abstract
Visible-light photocatalysis has evolved over the last decade into a widely used method in organic synthesis. Photocatalytic variants have been reported for many important transformations, such as cross-coupling reactions, α-amino functionalizations, cycloadditions, ATRA reactions, or fluorinations. To help chemists select photocatalytic methods for their synthesis, we compare in this Review classical and photocatalytic procedures for selected classes of reactions and highlight their advantages and limitations. In many cases, the photocatalytic reactions proceed under milder reaction conditions, typically at room temperature, and stoichiometric reagents are replaced by simple oxidants or reductants, such as air, oxygen, or amines. Does visible-light photocatalysis make a difference in organic synthesis? The prospect of shuttling electrons back and forth to substrates and intermediates or to selectively transfer energy through a visible-light-absorbing photocatalyst holds the promise to improve current procedures in radical chemistry and to open up new avenues by accessing reactive species hitherto unknown, especially by merging photocatalysis with organo- or metal catalysis.
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Affiliation(s)
- Leyre Marzo
- Institut für Organische Chemie, Universität Regensburg, Universitätsstrasse 31, 93053, Regensburg, Germany
| | - Santosh K Pagire
- Institut für Organische Chemie, Universität Regensburg, Universitätsstrasse 31, 93053, Regensburg, Germany
| | - Oliver Reiser
- Institut für Organische Chemie, Universität Regensburg, Universitätsstrasse 31, 93053, Regensburg, Germany
| | - Burkhard König
- Institut für Organische Chemie, Universität Regensburg, Universitätsstrasse 31, 93053, Regensburg, Germany
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29
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Marzo L, Pagire SK, Reiser O, König B. Photokatalyse mit sichtbarem Licht: Welche Bedeutung hat sie für die organische Synthese? Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201709766] [Citation(s) in RCA: 306] [Impact Index Per Article: 51.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Leyre Marzo
- Institut für Organische Chemie; Universität Regensburg; Universitätsstraße 31 93053 Regensburg Deutschland
| | - Santosh K. Pagire
- Institut für Organische Chemie; Universität Regensburg; Universitätsstraße 31 93053 Regensburg Deutschland
| | - Oliver Reiser
- Institut für Organische Chemie; Universität Regensburg; Universitätsstraße 31 93053 Regensburg Deutschland
| | - Burkhard König
- Institut für Organische Chemie; Universität Regensburg; Universitätsstraße 31 93053 Regensburg Deutschland
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30
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Jackl MK, Schuhmacher A, Shiro T, Bode JW. Synthesis of N,N-Alkylated α-Tertiary Amines by Coupling of α-Aminoalkyltrifluoroborates and Grignard Reagents. Org Lett 2018; 20:4044-4047. [DOI: 10.1021/acs.orglett.8b01613] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Moritz K. Jackl
- Laboratory of Organic Chemistry, Department of Chemistry and Applied Biosciences, ETH Zurich, 8093 Zurich, Switzerland
| | - Anne Schuhmacher
- Laboratory of Organic Chemistry, Department of Chemistry and Applied Biosciences, ETH Zurich, 8093 Zurich, Switzerland
| | - Tomoya Shiro
- Laboratory of Organic Chemistry, Department of Chemistry and Applied Biosciences, ETH Zurich, 8093 Zurich, Switzerland
| | - Jeffrey W. Bode
- Laboratory of Organic Chemistry, Department of Chemistry and Applied Biosciences, ETH Zurich, 8093 Zurich, Switzerland
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31
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Jian H, Wang Q, Wang WH, Li ZJ, Gu CZ, Dai B, He L. Divergent synthesis of functionalized thioethers via multicomponent reaction of benzynes. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.04.072] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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32
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Liu T, Li Y, Lai L, Cheng J, Sun J, Wu J. Photocatalytic Reaction of Potassium Alkyltrifluoroborates and Sulfur Dioxide with Alkenes. Org Lett 2018; 20:3605-3608. [DOI: 10.1021/acs.orglett.8b01385] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Tong Liu
- Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai 200438, China
| | - Yuewen Li
- Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai 200438, China
| | - Lifang Lai
- School of Petrochemical Engineering, and Jiangsu Province Key Laboratory of Fine Petrochemical Engineering, Changzhou University, Changzhou 213164, China
| | - Jiang Cheng
- School of Petrochemical Engineering, and Jiangsu Province Key Laboratory of Fine Petrochemical Engineering, Changzhou University, Changzhou 213164, China
| | - Jiangtao Sun
- School of Petrochemical Engineering, and Jiangsu Province Key Laboratory of Fine Petrochemical Engineering, Changzhou University, Changzhou 213164, China
| | - Jie Wu
- Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai 200438, China
- 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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33
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Plasko DP, Jordan CJ, Ciesa BE, Merrill MA, Hanna JM. Visible light-promoted alkylation of imines using potassium organotrifluoroborates. Photochem Photobiol Sci 2018; 17:534-538. [PMID: 29722411 DOI: 10.1039/c8pp00061a] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A mild, redox-neutral, alkylation of imines with potassium alkyltrifluoroborates is described. The reaction proceeds under photoredox conditions at ∼30 °C with primary, secondary, and tertiary alkyltrifluoroborates, leading to alkylation products in moderate to good yield in most cases. Aryl-, vinyl-, and cyclopropyltrifluoroborates failed to react under the reported conditions.
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Affiliation(s)
- Davis P Plasko
- Department of Chemistry, Physics, and Geology, Winthrop University, Sims Science Building, Rock Hill, SC 29733, USA.
| | - Christopher J Jordan
- Department of Chemistry, Physics, and Geology, Winthrop University, Sims Science Building, Rock Hill, SC 29733, USA.
| | - Brittney E Ciesa
- Department of Chemistry, Physics, and Geology, Winthrop University, Sims Science Building, Rock Hill, SC 29733, USA.
| | - Madison A Merrill
- Department of Chemistry, Physics, and Geology, Winthrop University, Sims Science Building, Rock Hill, SC 29733, USA.
| | - James M Hanna
- Department of Chemistry, Physics, and Geology, Winthrop University, Sims Science Building, Rock Hill, SC 29733, USA.
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34
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Xue F, Wang F, Liu J, Di J, Liao Q, Lu H, Zhu M, He L, He H, Zhang D, Song H, Liu XY, Qin Y. A Desulfurative Strategy for the Generation of Alkyl Radicals Enabled by Visible-Light Photoredox Catalysis. Angew Chem Int Ed Engl 2018; 57:6667-6671. [PMID: 29671934 DOI: 10.1002/anie.201802710] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2018] [Indexed: 01/25/2023]
Abstract
Herein, we present a new desulfurative method for generating primary, secondary, and tertiary alkyl radicals through visible-light photoredox catalysis. A process that involves the generation of N-centered radicals from sulfinamide intermediates, followed by subsequent fragmentation, is critical to forming the corresponding alkyl radical species. This strategy has been successfully applied to conjugate addition reactions that features mild reaction conditions, broad substrate scope (>60 examples), and good functional-group tolerance.
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Affiliation(s)
- Fei Xue
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education, Sichuan Research Center of Precision Engineering Technology for Small Molecule Drugs, West China School of Pharmacy, Sichuan University, Chengdu, 610041, P. R. China
| | - Falu Wang
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education, Sichuan Research Center of Precision Engineering Technology for Small Molecule Drugs, West China School of Pharmacy, Sichuan University, Chengdu, 610041, P. R. China
| | - Jiazhen Liu
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education, Sichuan Research Center of Precision Engineering Technology for Small Molecule Drugs, West China School of Pharmacy, Sichuan University, Chengdu, 610041, P. R. China
| | - Jiamei Di
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education, Sichuan Research Center of Precision Engineering Technology for Small Molecule Drugs, West China School of Pharmacy, Sichuan University, Chengdu, 610041, P. R. China
| | - Qi Liao
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education, Sichuan Research Center of Precision Engineering Technology for Small Molecule Drugs, West China School of Pharmacy, Sichuan University, Chengdu, 610041, P. R. China
| | - Huifang Lu
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education, Sichuan Research Center of Precision Engineering Technology for Small Molecule Drugs, West China School of Pharmacy, Sichuan University, Chengdu, 610041, P. R. China
| | - Min Zhu
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education, Sichuan Research Center of Precision Engineering Technology for Small Molecule Drugs, West China School of Pharmacy, Sichuan University, Chengdu, 610041, P. R. China
| | - Liping He
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education, Sichuan Research Center of Precision Engineering Technology for Small Molecule Drugs, West China School of Pharmacy, Sichuan University, Chengdu, 610041, P. R. China
| | - Huan He
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education, Sichuan Research Center of Precision Engineering Technology for Small Molecule Drugs, West China School of Pharmacy, Sichuan University, Chengdu, 610041, P. R. China
| | - Dan Zhang
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education, Sichuan Research Center of Precision Engineering Technology for Small Molecule Drugs, West China School of Pharmacy, Sichuan University, Chengdu, 610041, P. R. China
| | - Hao Song
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education, Sichuan Research Center of Precision Engineering Technology for Small Molecule Drugs, West China School of Pharmacy, Sichuan University, Chengdu, 610041, P. R. China
| | - Xiao-Yu Liu
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education, Sichuan Research Center of Precision Engineering Technology for Small Molecule Drugs, West China School of Pharmacy, Sichuan University, Chengdu, 610041, P. R. China
| | - Yong Qin
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education, Sichuan Research Center of Precision Engineering Technology for Small Molecule Drugs, West China School of Pharmacy, Sichuan University, Chengdu, 610041, P. R. China
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35
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Xue F, Wang F, Liu J, Di J, Liao Q, Lu H, Zhu M, He L, He H, Zhang D, Song H, Liu X, Qin Y. A Desulfurative Strategy for the Generation of Alkyl Radicals Enabled by Visible‐Light Photoredox Catalysis. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201802710] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Fei Xue
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of EducationSichuan Research Center of Precision Engineering Technology for Small Molecule DrugsWest China School of PharmacySichuan University Chengdu 610041 P. R. China
| | - Falu Wang
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of EducationSichuan Research Center of Precision Engineering Technology for Small Molecule DrugsWest China School of PharmacySichuan University Chengdu 610041 P. R. China
| | - Jiazhen Liu
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of EducationSichuan Research Center of Precision Engineering Technology for Small Molecule DrugsWest China School of PharmacySichuan University Chengdu 610041 P. R. China
| | - Jiamei Di
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of EducationSichuan Research Center of Precision Engineering Technology for Small Molecule DrugsWest China School of PharmacySichuan University Chengdu 610041 P. R. China
| | - Qi Liao
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of EducationSichuan Research Center of Precision Engineering Technology for Small Molecule DrugsWest China School of PharmacySichuan University Chengdu 610041 P. R. China
| | - Huifang Lu
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of EducationSichuan Research Center of Precision Engineering Technology for Small Molecule DrugsWest China School of PharmacySichuan University Chengdu 610041 P. R. China
| | - Min Zhu
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of EducationSichuan Research Center of Precision Engineering Technology for Small Molecule DrugsWest China School of PharmacySichuan University Chengdu 610041 P. R. China
| | - Liping He
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of EducationSichuan Research Center of Precision Engineering Technology for Small Molecule DrugsWest China School of PharmacySichuan University Chengdu 610041 P. R. China
| | - Huan He
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of EducationSichuan Research Center of Precision Engineering Technology for Small Molecule DrugsWest China School of PharmacySichuan University Chengdu 610041 P. R. China
| | - Dan Zhang
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of EducationSichuan Research Center of Precision Engineering Technology for Small Molecule DrugsWest China School of PharmacySichuan University Chengdu 610041 P. R. China
| | - Hao Song
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of EducationSichuan Research Center of Precision Engineering Technology for Small Molecule DrugsWest China School of PharmacySichuan University Chengdu 610041 P. R. China
| | - Xiao‐Yu Liu
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of EducationSichuan Research Center of Precision Engineering Technology for Small Molecule DrugsWest China School of PharmacySichuan University Chengdu 610041 P. R. China
| | - Yong Qin
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of EducationSichuan Research Center of Precision Engineering Technology for Small Molecule DrugsWest China School of PharmacySichuan University Chengdu 610041 P. R. China
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36
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Duan K, Yan X, Liu Y, Li Z. Recent Progress in the Radical Chemistry of Alkylborates and Alkylboronates. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201701626] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Ke Duan
- Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education; Ocean University of China; Qingdao 266100 People's Republic of China
- College of Environmental Science and Engineering; Ocean University of China; Qingdao 266100 People's Republic of China
| | - Xuefeng Yan
- Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education; Ocean University of China; Qingdao 266100 People's Republic of China
| | - Yongjun Liu
- State Key Laboratory Base of Eco-chemical Engineering; College of Chemistry and Molecular Engineering; Qingdao University of Science and Technology; Qingdao 266042 People's Republic of China
| | - Zhaodong Li
- College of Materials and Energy; South China Agricultural University; Guangzhou 510640 People's Republic of China
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37
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Min D, Yuan X, Liu T, Liu J, Tang S. Fe-catalyzed dithiane radical induced C−S bond activation−addition to α, β-unsaturated ketones. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201800241] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Deng Min
- School of Pharmacy; Lanzhou University; Lanzhou 730000 People's Republic of China
| | - Xinyu Yuan
- School of Pharmacy; Lanzhou University; Lanzhou 730000 People's Republic of China
| | - Teng Liu
- School of Pharmacy; Lanzhou University; Lanzhou 730000 People's Republic of China
| | - Jian Liu
- School of Pharmacy; Lanzhou University; Lanzhou 730000 People's Republic of China
| | - Shouchu Tang
- School of Pharmacy; Lanzhou University; Lanzhou 730000 People's Republic of China
- State Key Laboratory of Applied Organic Chemistry; Lanzhou University; Lanzhou 730000 People's Republic of China
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38
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Corrigan N, Shanmugam S, Xu J, Boyer C. Photocatalysis in organic and polymer synthesis. Chem Soc Rev 2018; 45:6165-6212. [PMID: 27819094 DOI: 10.1039/c6cs00185h] [Citation(s) in RCA: 464] [Impact Index Per Article: 77.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
This review, with over 600 references, summarizes the recent applications of photoredox catalysis for organic transformation and polymer synthesis. Photoredox catalysts are metallo- or organo-compounds capable of absorbing visible light, resulting in an excited state species. This excited state species can donate or accept an electron from other substrates to mediate redox reactions at ambient temperature with high atom efficiency. These catalysts have been successfully implemented for the discovery of novel organic reactions and synthesis of added-value chemicals with an excellent control of selectivity and stereo-regularity. More recently, such catalysts have been implemented by polymer chemists to post-modify polymers in high yields, as well as to effectively catalyze reversible deactivation radical polymerizations and living polymerizations. These catalysts create new approaches for advanced organic transformation and polymer synthesis. The objective of this review is to give an overview of this emerging field to organic and polymer chemists as well as materials scientists.
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Affiliation(s)
- Nathaniel Corrigan
- Centre for Advanced Macromolecular Design (CAMD), School of Chemical Engineering, UNSW Australia, Sydney, NSW 2052, Australia. and Australian Centre for NanoMedicine, School of Chemical Engineering, UNSW Australia, Sydney, NSW 2052, Australia
| | - Sivaprakash Shanmugam
- Centre for Advanced Macromolecular Design (CAMD), School of Chemical Engineering, UNSW Australia, Sydney, NSW 2052, Australia.
| | - Jiangtao Xu
- Centre for Advanced Macromolecular Design (CAMD), School of Chemical Engineering, UNSW Australia, Sydney, NSW 2052, Australia. and Australian Centre for NanoMedicine, School of Chemical Engineering, UNSW Australia, Sydney, NSW 2052, Australia
| | - Cyrille Boyer
- Centre for Advanced Macromolecular Design (CAMD), School of Chemical Engineering, UNSW Australia, Sydney, NSW 2052, Australia. and Australian Centre for NanoMedicine, School of Chemical Engineering, UNSW Australia, Sydney, NSW 2052, Australia
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39
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Silva-Cuevas C, Paleo E, León-Rayo DF, Lujan-Montelongo JA. An expeditious and efficient bromomethylation of thiols: enabling bromomethyl sulfides as useful building blocks. RSC Adv 2018; 8:24654-24659. [PMID: 35557855 PMCID: PMC9092473 DOI: 10.1039/c8ra04002h] [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: 05/10/2018] [Accepted: 06/28/2018] [Indexed: 11/25/2022] Open
Abstract
A facile and highly efficient method for the bromomethylation of thiols, using paraformaldehyde and HBr/AcOH, has been developed, which advantageously minimizes the generation of highly toxic byproducts. The preparation of 22 structurally diverse α-bromomethyl sulfides illustrates the chemo-tolerant applicability while bromo-lithium exchange and functionalization sequences, free radical reductions, and additions of the title compounds demonstrate their synthetic utility. A new method for the bromomethylation of thiols using paraformaldehyde and HBr/AcOH, minimizes the generation of toxic byproducts. Synthetic utility of α-bromomethyl sulfides was demonstrated through umpolung and free radical chemistry.![]()
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Affiliation(s)
- Carolina Silva-Cuevas
- Departamento de Química
- Centro de Investigación y de Estudios Avanzados (Cinvestav)
- 07360 Ciudad de México
- México
| | - Ehecatl Paleo
- Facultad de Ciencias
- Universidad Nacional Autónoma de México
- Ciudad Universitaria
- Ciudad de México
- México
| | - David F. León-Rayo
- Departamento de Química
- Centro de Investigación y de Estudios Avanzados (Cinvestav)
- 07360 Ciudad de México
- México
| | - J. Armando Lujan-Montelongo
- Departamento de Química
- Centro de Investigación y de Estudios Avanzados (Cinvestav)
- 07360 Ciudad de México
- México
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40
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Liu T, Ding Y, Fan X, Wu J. Photoinduced synthesis of (E)-vinyl sulfones through the insertion of sulfur dioxide. Org Chem Front 2018. [DOI: 10.1039/c8qo00965a] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Under visible light irradiation, a three-component reaction of potassium alkyltrifluoroborates, sulfur dioxide and alkynes with the assistance of photocatalysis and in the presence of copper(ii) triflate is described. This transformation affords (E)-vinyl sulfones efficiently with excellent regioselectivity and stereoselectivity under mild conditions.
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Affiliation(s)
- Tong Liu
- Gannan Medical University Collaborative Innovation Center for Gannan Oil-tea Camellia Industrial Development
- Ganzhou
- China
- Department of Chemistry
- Fudan University
| | - Yechun Ding
- Gannan Medical University Collaborative Innovation Center for Gannan Oil-tea Camellia Industrial Development
- Ganzhou
- China
| | - Xiaona Fan
- Gannan Medical University Collaborative Innovation Center for Gannan Oil-tea Camellia Industrial Development
- Ganzhou
- China
| | - Jie Wu
- Department of Chemistry
- Fudan University
- Shanghai 200438
- China
- State Key Laboratory of Organometallic Chemistry
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41
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Qiu G, Lai L, Cheng J, Wu J. Recent advances in the sulfonylation of alkenes with the insertion of sulfur dioxide via radical reactions. Chem Commun (Camb) 2018; 54:10405-10414. [DOI: 10.1039/c8cc05847d] [Citation(s) in RCA: 151] [Impact Index Per Article: 25.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Recent advances in the sulfonylation of alkenes via the insertion of sulfur dioxide are summarized. Two strategies for the sulfonylation of alkenes with the insertion of sulfur dioxide have been developed.
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Affiliation(s)
- Guanyinsheng Qiu
- College of Biological, Chemical Science and Engineering
- Jiaxing University
- Jiaxing 314001
- China
| | - Lifang Lai
- School of Petrochemical Engineering
- and Jiangsu Province Key Laboratory of Fine Petrochemical Engineering
- Changzhou University
- Changzhou 213164
- China
| | - Jiang Cheng
- School of Petrochemical Engineering
- and Jiangsu Province Key Laboratory of Fine Petrochemical Engineering
- Changzhou University
- Changzhou 213164
- China
| | - Jie Wu
- Department of Chemistry
- Fudan University (Jiangwan Campus)
- Shanghai 200438
- China
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42
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Di J, He H, Wang F, Xue F, Liu XY, Qin Y. Regiospecific alkyl addition of (hetero)arene-fused thiophenes enabled by a visible-light-mediated photocatalytic desulfuration approach. Chem Commun (Camb) 2018; 54:4692-4695. [PMID: 29676430 DOI: 10.1039/c8cc02052c] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A unique photoredox desulfuration approach enabling the regiospecific alkyl addition of (hetero)arene-fused thiophenes is presented.
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Affiliation(s)
- Jiamei Di
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education
- and Sichuan Research Center of Precision Engineering Technology for Small Molecule Drugs
- West China School of Pharmacy
- Sichuan University
- Chengdu 610041
| | - Huan He
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education
- and Sichuan Research Center of Precision Engineering Technology for Small Molecule Drugs
- West China School of Pharmacy
- Sichuan University
- Chengdu 610041
| | - Falu Wang
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education
- and Sichuan Research Center of Precision Engineering Technology for Small Molecule Drugs
- West China School of Pharmacy
- Sichuan University
- Chengdu 610041
| | - Fei Xue
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education
- and Sichuan Research Center of Precision Engineering Technology for Small Molecule Drugs
- West China School of Pharmacy
- Sichuan University
- Chengdu 610041
| | - Xiao-Yu Liu
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education
- and Sichuan Research Center of Precision Engineering Technology for Small Molecule Drugs
- West China School of Pharmacy
- Sichuan University
- Chengdu 610041
| | - Yong Qin
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education
- and Sichuan Research Center of Precision Engineering Technology for Small Molecule Drugs
- West China School of Pharmacy
- Sichuan University
- Chengdu 610041
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43
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Lima F, Sharma UK, Grunenberg L, Saha D, Johannsen S, Sedelmeier J, Van der Eycken EV, Ley SV. A Lewis Base Catalysis Approach for the Photoredox Activation of Boronic Acids and Esters. Angew Chem Int Ed Engl 2017; 56:15136-15140. [PMID: 29024307 PMCID: PMC5708277 DOI: 10.1002/anie.201709690] [Citation(s) in RCA: 104] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2017] [Indexed: 11/11/2022]
Abstract
We report herein the use of a dual catalytic system comprising a Lewis base catalyst such as quinuclidin-3-ol or 4-dimethylaminopyridine and a photoredox catalyst to generate carbon radicals from either boronic acids or esters. This system enabled a wide range of alkyl boronic esters and aryl or alkyl boronic acids to react with electron-deficient olefins via radical addition to efficiently form C-C coupled products in a redox-neutral fashion. The Lewis base catalyst was shown to form a redox-active complex with either the boronic esters or the trimeric form of the boronic acids (boroxines) in solution.
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Affiliation(s)
- Fabio Lima
- Department of ChemistryUniversity of CambridgeLensfield RoadCambridgeCB2 1EWUK
| | - Upendra K. Sharma
- Laboratory for Organic and Microwave-Assisted Chemistry (LOMAC)Department of ChemistryUniversity of Leuven (KU Leuven)Celestijnenlaan 200F3001LeuvenBelgium
| | - Lars Grunenberg
- Department of ChemistryUniversity of CambridgeLensfield RoadCambridgeCB2 1EWUK
| | - Debasmita Saha
- Laboratory for Organic and Microwave-Assisted Chemistry (LOMAC)Department of ChemistryUniversity of Leuven (KU Leuven)Celestijnenlaan 200F3001LeuvenBelgium
| | - Sandra Johannsen
- Department of ChemistryUniversity of CambridgeLensfield RoadCambridgeCB2 1EWUK
| | | | - Erik V. Van der Eycken
- Laboratory for Organic and Microwave-Assisted Chemistry (LOMAC)Department of ChemistryUniversity of Leuven (KU Leuven)Celestijnenlaan 200F3001LeuvenBelgium
- Peoples Friendship University of Russia (RUDN University)Miklukho-Maklaya street 6117198MoscowRussia
| | - Steven V. Ley
- Department of ChemistryUniversity of CambridgeLensfield RoadCambridgeCB2 1EWUK
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44
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Lima F, Sharma UK, Grunenberg L, Saha D, Johannsen S, Sedelmeier J, Van der Eycken EV, Ley SV. A Lewis Base Catalysis Approach for the Photoredox Activation of Boronic Acids and Esters. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201709690] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Fabio Lima
- Department of Chemistry; University of Cambridge; Lensfield Road Cambridge CB2 1EW UK
| | - Upendra K. Sharma
- Laboratory for Organic and Microwave-Assisted Chemistry (LOMAC); Department of Chemistry; University of Leuven (KU Leuven); Celestijnenlaan 200F 3001 Leuven Belgium
| | - Lars Grunenberg
- Department of Chemistry; University of Cambridge; Lensfield Road Cambridge CB2 1EW UK
| | - Debasmita Saha
- Laboratory for Organic and Microwave-Assisted Chemistry (LOMAC); Department of Chemistry; University of Leuven (KU Leuven); Celestijnenlaan 200F 3001 Leuven Belgium
| | - Sandra Johannsen
- Department of Chemistry; University of Cambridge; Lensfield Road Cambridge CB2 1EW UK
| | | | - Erik V. Van der Eycken
- Laboratory for Organic and Microwave-Assisted Chemistry (LOMAC); Department of Chemistry; University of Leuven (KU Leuven); Celestijnenlaan 200F 3001 Leuven Belgium
- Peoples Friendship University of Russia (RUDN University); Miklukho-Maklaya street 6 117198 Moscow Russia
| | - Steven V. Ley
- Department of Chemistry; University of Cambridge; Lensfield Road Cambridge CB2 1EW UK
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45
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Gualandi A, Matteucci E, Monti F, Baschieri A, Armaroli N, Sambri L, Cozzi PG. Photoredox radical conjugate addition of dithiane-2-carboxylate promoted by an iridium(iii) phenyl-tetrazole complex: a formal radical methylation of Michael acceptors. Chem Sci 2017; 8:1613-1620. [PMID: 28451291 PMCID: PMC5364518 DOI: 10.1039/c6sc03374a] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2016] [Accepted: 11/02/2016] [Indexed: 12/20/2022] Open
Abstract
A readily accessible iridium(iii) phenyl-tetrazole complex ([Ir(ptrz)2(tBu-bpy)]+, 2; Hptrz = 2-methyl-5-phenyl-tetrazole; tBu-bpy = 4,4'-di-tert-butyl-2,2'-bipyridine) is shown to be a versatile catalyst for a new photocatalytic Michael reaction. Under light irradiation in the presence of 2, a dithiane 2-carboxylic acid, obtained by simple hydrolysis of a commercially available ethyl ester, generates a 1,3-dithiane radical capable of performing addition to a variety of Michael acceptors (e.g., unsaturated ketones, esters, amides and malonates). This broad scope reaction with high yields is a formal photo-redox addition of the elusive methyl radical and the adducts obtained can be starting materials for a variety of functionalized products. The excited-state oxidation potential of catalyst 2 allows selective formation of radicals only from α-heterosubstituted carboxylates. Chemical modification of this metal complex can tune the electrochemical properties, opening a route to new highly selective catalytic photo-oxidation reactions.
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Affiliation(s)
- Andrea Gualandi
- Dipartimento di Chimica "G. Ciamician" , ALMA MATER STUDIORUM Università di Bologna , Via Selmi 2 , 40126 Bologna , Italy .
| | - Elia Matteucci
- Dipartimento di Chimica Industriale "Toso Montanari" , ALMA MATER STUDIORUM Università di Bologna , Viale Risorgimento 4 , 40136 , Bologna , Italy .
| | - Filippo Monti
- Istituto per la Sintesi Organica e la Fotoreattività , Consiglio Nazionale delle Ricerche , Via P. Gobetti 101 , 40129 Bologna , Italy .
| | - Andrea Baschieri
- Dipartimento di Chimica Industriale "Toso Montanari" , ALMA MATER STUDIORUM Università di Bologna , Viale Risorgimento 4 , 40136 , Bologna , Italy .
| | - Nicola Armaroli
- Istituto per la Sintesi Organica e la Fotoreattività , Consiglio Nazionale delle Ricerche , Via P. Gobetti 101 , 40129 Bologna , Italy .
| | - Letizia Sambri
- Dipartimento di Chimica Industriale "Toso Montanari" , ALMA MATER STUDIORUM Università di Bologna , Viale Risorgimento 4 , 40136 , Bologna , Italy .
| | - Pier Giorgio Cozzi
- Dipartimento di Chimica "G. Ciamician" , ALMA MATER STUDIORUM Università di Bologna , Via Selmi 2 , 40126 Bologna , Italy .
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46
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Zhang WM, Dai JJ, Xu J, Xu HJ. Visible-Light-Induced C2 Alkylation of Pyridine N-Oxides. J Org Chem 2017; 82:2059-2066. [DOI: 10.1021/acs.joc.6b02891] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Wen-Man Zhang
- School of Biological and
Medical Engineering, Hefei University of Technology, Hefei 230009, China
| | - Jian-Jun Dai
- School of Biological and
Medical Engineering, Hefei University of Technology, Hefei 230009, China
| | - Jun Xu
- School of Biological and
Medical Engineering, Hefei University of Technology, Hefei 230009, China
| | - Hua-Jian Xu
- School of Biological and
Medical Engineering, Hefei University of Technology, Hefei 230009, China
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47
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Nishigaichi Y, Orimi T, Koyachi K, Ohmuro Y, Suzuki M. Photochemically Assisted Introduction of a Benzyl Unit into Isoquinolines Using Benzyltrifluoroborates. CHEM LETT 2016. [DOI: 10.1246/cl.160762] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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48
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Goddard JP, Ollivier C, Fensterbank L. Photoredox Catalysis for the Generation of Carbon Centered Radicals. Acc Chem Res 2016; 49:1924-36. [PMID: 27529633 DOI: 10.1021/acs.accounts.6b00288] [Citation(s) in RCA: 199] [Impact Index Per Article: 24.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Radical chemistry has witnessed over the last decades important advances that have positioned it as a methodology of choice in synthetic chemistry. A number of great attributes such as specific reactivities, the knowledge of the kinetics of most elementary processes, the functional group tolerance, and the possibility to operate cascade sequences are clearly responsible for this craze. Nevertheless, at the end of the last century, radical chemistry appeared plagued by several hurdles to overcome such as the use of environmentally problematic mediators or the impossibility of scale up. While the concept of photocatalysis was firmly established in the coordination chemistry community, its diffusion in organic synthetic chemistry remained sporadic for decades until the end of the 2000s with the breakthrough merging of organocatalysis and photocatalysis by the MacMillan group and contemporary reports by the groups of Yoon and Stephenson. Since then, photoredox catalysis has enjoyed particularly active and intense developments. It is now the topic of a still increasing number of publications featuring various applications from asymmetric synthesis, total synthesis of natural products, and polymerization to process (flow) chemistry. In this Account, we survey our own efforts in this domain, focusing on the elaboration of new photocatalytic pathways that could lead to the efficient generation of C-centered functionalized alkyl and aryl radicals. Both reductive and oxidative manifolds are accessible through photoredox catalysis, which has guided us along these lines in our projects. Thus, we studied the photocatalytic reduction of onium salts such as sulfoniums and iodoniums for the production of the elusive aryl radical intermediates. Progressing to more relevant chemistry for synthesis, we examined the cleavage of C-O and the C-Br bonds for the generation of alkyl C-centered radicals. Activated epoxides could serve as valuable substrates of a photocatalyzed variant of the Nugent-RajanBabu-Gansäuer homolytic cleavage of epoxides. Using imidazole based carbamates, we could also devise the first photocatalyzed Barton-McCombie deoxygenation reaction. Finally, bromophenylacetate can be reduced using the [Au2(μ-dppm)2]Cl2 photocatalyst under UVA or visible-light. This was used for the initiation of the controlled atom transfer radical polymerization of methacrylates and acrylates in solution or laminate. Our next endeavors concerned the photocatalyzed oxidation of stabilized carbanions such as enolates of 1,3-dicarbonyl substrates, trifluoroborates, and more extensively bis-catecholato silicates. Because of their low oxidation potentials, the later have proved to be exquisite sources of radical entities, which can be engaged in diverse intermolecular reactions such as vinylation, alkynylation, and conjugate additions. The bis-catecholato silicates were also shown to behave as excellent partners of dual photoredox-nickel catalysis leading in an expeditious manner to libraries of cross coupling products.
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Affiliation(s)
- Jean-Philippe Goddard
- Université de Haute-Alsace, Ecole Nationale Supérieure de Chimie de Mulhouse,
Laboratoire de Chimie Organique et Bioorganique EA 4566, 3 Bis rue Alfred Werner, 68093 Mulhouse Cedex, France
| | - Cyril Ollivier
- UPMC Univ-Paris 06 − Sorbonne Universités, Institut Parisien de Chimie Moléculaire (UMR
CNRS 8232), 4 Place Jussieu,
C. 229, 75005 Paris, France
| | - Louis Fensterbank
- UPMC Univ-Paris 06 − Sorbonne Universités, Institut Parisien de Chimie Moléculaire (UMR
CNRS 8232), 4 Place Jussieu,
C. 229, 75005 Paris, France
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49
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El Achi N, Penhoat M, Bakkour Y, Rolando C, Chausset-Boissarie L. Continuous UV-Flow Microsystem for Efficient Radical Generation from Organotrifluoroborates by Photoredox Catalysis. European J Org Chem 2016. [DOI: 10.1002/ejoc.201600728] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Nassim El Achi
- Miniaturisation pour la Synthèse; l'Analyse et la Protéomique (MSAP); USR CNRS 3290; Université de Lille 1; 59655 Villeneuve d'Ascq France
| | - Maël Penhoat
- Miniaturisation pour la Synthèse; l'Analyse et la Protéomique (MSAP); USR CNRS 3290; Université de Lille 1; 59655 Villeneuve d'Ascq France
| | - Youssef Bakkour
- Laboratory of Applied Chemistry; Faculty of Science III; Lebanese University; P. O. Box 826 Tripoli Lebanon
| | - Christian Rolando
- Miniaturisation pour la Synthèse; l'Analyse et la Protéomique (MSAP); USR CNRS 3290; Université de Lille 1; 59655 Villeneuve d'Ascq France
| | - Laëtitia Chausset-Boissarie
- Miniaturisation pour la Synthèse; l'Analyse et la Protéomique (MSAP); USR CNRS 3290; Université de Lille 1; 59655 Villeneuve d'Ascq France
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50
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Koike T, Akita M. Combination of organotrifluoroborates with photoredox catalysis marking a new phase in organic radical chemistry. Org Biomol Chem 2016; 14:6886-90. [PMID: 27282517 DOI: 10.1039/c6ob00996d] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Combination of organotrifluoroborates and visible-light-driven photoredox catalysis, both of which have attracted the attention of synthetic chemists, marks a new phase in the field of organic radical chemistry. We have developed photoredox-catalyzed radical reactions with organotrifluoroborates, which turn out to serve not only as a source of organic radicals but also as radical acceptors. The first part of this Perspective deals with the generation of organic radicals from organotrifluoroborates, and the latter part describes addition of the CF3 radical to alkenyltrifluoroborates. The good chemistry between organoborates and photoredox catalysis and its future will be discussed.
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Affiliation(s)
- 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.
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