151
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He H, Cao R, Cao R, Liu XY, Li W, Yu D, Li Y, Liu M, Wu Y, Wu P, Yang JS, Yan Y, Yang J, Zheng ZB, Zhong W, Qin Y. A light- and heat-driven glycal diazidation approach to nitrogenous carbohydrate derivatives with antiviral activity. Org Biomol Chem 2020; 18:6155-6161. [PMID: 32716466 DOI: 10.1039/d0ob01172j] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The aminated mimetics of 2-keto-3-deoxy-sugar acids such as the anti-influenza clinical drugs oseltamivir (Tamiflu) and zanamivir (Relenza) are important bioactive molecules. Development of synthetic methodologies for accessing such compound collections is highly desirable. Herein, we describe a simple, catalyst-free glycal diazidation protocol enabled by visible light-driven conditions. This new method requires neither acid promoters nor transition-metal catalysts and takes place at ambient temperature within 1-2 hours. Notably, the desired transformations could be promoted by thermal conditions as well, albeit with lower efficacy compared to the light-induced conditions. Different sugar acid-derived glycal templates have been converted into a range of 2,3-diazido carbohydrate analogs by harnessing this mild and scalable approach, leading to the discovery of new antiviral agents.
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Affiliation(s)
- Huan He
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China.
| | - Ruiyuan Cao
- National Engineering Research Center for the Emergence Drugs, Beijing Institute of Pharmacology and Toxicology, Beijing 100850, China.
| | - Ruidi Cao
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China.
| | - Xiao-Yu Liu
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China.
| | - Wei Li
- National Engineering Research Center for the Emergence Drugs, Beijing Institute of Pharmacology and Toxicology, Beijing 100850, China.
| | - Di Yu
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China.
| | - Yuexiang Li
- National Engineering Research Center for the Emergence Drugs, Beijing Institute of Pharmacology and Toxicology, Beijing 100850, China.
| | - Miaomiao Liu
- National Engineering Research Center for the Emergence Drugs, Beijing Institute of Pharmacology and Toxicology, Beijing 100850, China.
| | - Yanmei Wu
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China.
| | - Pingzhou Wu
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China.
| | - Jin-Song Yang
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China.
| | - Yunzheng Yan
- National Engineering Research Center for the Emergence Drugs, Beijing Institute of Pharmacology and Toxicology, Beijing 100850, China.
| | - Jingjing Yang
- National Engineering Research Center for the Emergence Drugs, Beijing Institute of Pharmacology and Toxicology, Beijing 100850, China.
| | - Zhi-Bing Zheng
- National Engineering Research Center for the Emergence Drugs, Beijing Institute of Pharmacology and Toxicology, Beijing 100850, China.
| | - Wu Zhong
- National Engineering Research Center for the Emergence Drugs, Beijing Institute of Pharmacology and Toxicology, Beijing 100850, China.
| | - Yong Qin
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China.
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152
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Ma X, Zhang G. Visible
Light‐Induced Copper‐Catalyzed
C—H Arylation of Benzoxazoles
†. CHINESE J CHEM 2020. [DOI: 10.1002/cjoc.201900527] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Xiaodong Ma
- State Key Laboratory of Organometallic 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
| | - Guozhu Zhang
- State Key Laboratory of Organometallic 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
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153
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Li C, Ma Y, Liu H, Tao L, Ren Y, Chen X, Li H, Yang Q. Asymmetric photocatalysis over robust covalent organic frameworks with tetrahydroquinoline linkage. CHINESE JOURNAL OF CATALYSIS 2020. [DOI: 10.1016/s1872-2067(20)63572-0] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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154
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Affiliation(s)
- Julien Warnan
- Department of Chemistry University of Cambridge Lensfield Road Cambridge CB2 1EW UK
- Department Chemie Technische Universität München Lichtenbergstraße 4 85747 Garching Germany
| | - Erwin Reisner
- Department of Chemistry University of Cambridge Lensfield Road Cambridge CB2 1EW UK
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155
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Chen H, Jin W, Yu S. Enantioselective Remote C(sp3)–H Cyanation via Dual Photoredox and Copper Catalysis. Org Lett 2020; 22:5910-5914. [DOI: 10.1021/acs.orglett.0c02008] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Hui Chen
- State Key Laboratory of Analytical Chemistry for Life Science, Jiangsu Key Laboratory of Advanced Organic Materials, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Weiwei Jin
- State Key Laboratory of Analytical Chemistry for Life Science, Jiangsu Key Laboratory of Advanced Organic Materials, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Shouyun Yu
- State Key Laboratory of Analytical Chemistry for Life Science, Jiangsu Key Laboratory of Advanced Organic Materials, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
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156
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Saha D. Catalytic Enantioselective Radical Transformations Enabled by Visible Light. Chem Asian J 2020; 15:2129-2152. [PMID: 32463981 DOI: 10.1002/asia.202000525] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Revised: 05/27/2020] [Indexed: 12/11/2022]
Abstract
Visible light has been recognized as an economical and environmentally benign source of energy that enables chemoselective molecular activation of chemical reactions and hence reveal a new horizon for the design and discovery of novel chemical transformations. On the other hand, asymmetric catalysis represents an economic method to satisfy the increasing need for enantioenriched compounds in the chemical and pharmaceutical industries. Therefore, combining visible light photocatalysis with asymmetric catalysis creates a wider range of opportunities for the development of mechanistically unique reaction schemes. However, there arise two main problems like undesirable photochemical background reactions and difficulties in controlling the stereochemistry with highly reactive photochemical intermediates which can pose a serious challenge to the development of asymmetric visible light photocatalysis. In recent years, several methods have been developed to overcome these challenges. This review summarizes the recent advances in visible light-induced enantioselective reactions. We divide our discussion into four categories: Asymmetric photoredox organocatalysis, asymmetric transition metal photoredox catalysis, asymmetric photoredox Lewis acid catalysis and asymmetric photoinduced energy transfer catalysis. Special emphasis has been given to different catalytic activation modes that enable the construction of challenging carbon-carbon and carbon-heteroatom bond in an enantioselective fashion. A brief analysis of substrate scope and limitation as well as reaction mechanism of these reactions has been included.
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Affiliation(s)
- Debajyoti Saha
- Department of Chemistry, Krishnagar Govt. College, Krishnagar, Nadia, 741101, India
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157
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Shen Y, Shen ML, Wang PS. Light-Mediated Chiral Phosphate Catalysis for Asymmetric Dicarbofunctionalization of Enamides. ACS Catal 2020. [DOI: 10.1021/acscatal.0c02660] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Yang Shen
- Department of Chemistry, University of Science and Technology of China, Hefei, 230026, China
| | - Meng-Lan Shen
- Department of Chemistry, University of Science and Technology of China, Hefei, 230026, China
| | - Pu-Sheng Wang
- Department of Chemistry, University of Science and Technology of China, Hefei, 230026, China
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158
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Li L, Li Y, Fu N, Zhang L, Luo S. Catalytic Asymmetric Electrochemical α‐Arylation of Cyclic β‐Ketocarbonyls with Anodic Benzyne Intermediates. Angew Chem Int Ed Engl 2020; 59:14347-14351. [DOI: 10.1002/anie.202006016] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2020] [Indexed: 01/12/2023]
Affiliation(s)
- Longji Li
- Key Laboratory of Molecular Recognition and Function Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Yao Li
- Center of Basic Molecular Science (CBMS) Department of Chemistry Tsinghua University Beijing 100084 China
| | - Niankai Fu
- Key Laboratory of Molecular Recognition and Function Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Long Zhang
- Center of Basic Molecular Science (CBMS) Department of Chemistry Tsinghua University Beijing 100084 China
| | - Sanzhong Luo
- Center of Basic Molecular Science (CBMS) Department of Chemistry Tsinghua University Beijing 100084 China
- Key Laboratory of Molecular Recognition and Function Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China
- University of Chinese Academy of Sciences Beijing 100049 China
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159
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Li L, Li Y, Fu N, Zhang L, Luo S. Catalytic Asymmetric Electrochemical α‐Arylation of Cyclic β‐Ketocarbonyls with Anodic Benzyne Intermediates. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202006016] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Longji Li
- Key Laboratory of Molecular Recognition and Function Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Yao Li
- Center of Basic Molecular Science (CBMS) Department of Chemistry Tsinghua University Beijing 100084 China
| | - Niankai Fu
- Key Laboratory of Molecular Recognition and Function Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Long Zhang
- Center of Basic Molecular Science (CBMS) Department of Chemistry Tsinghua University Beijing 100084 China
| | - Sanzhong Luo
- Center of Basic Molecular Science (CBMS) Department of Chemistry Tsinghua University Beijing 100084 China
- Key Laboratory of Molecular Recognition and Function Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China
- University of Chinese Academy of Sciences Beijing 100049 China
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160
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Hörmann FM, Kerzig C, Chung TS, Bauer A, Wenger OS, Bach T. Triplet Energy Transfer from Ruthenium Complexes to Chiral Eniminium Ions: Enantioselective Synthesis of Cyclobutanecarbaldehydes by [2+2] Photocycloaddition. Angew Chem Int Ed Engl 2020; 59:9659-9668. [PMID: 32166853 PMCID: PMC7318320 DOI: 10.1002/anie.202001634] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Revised: 03/12/2020] [Indexed: 12/30/2022]
Abstract
Chiral eniminium salts, prepared from α,β-unsaturated aldehydes and a chiral proline derived secondary amine, underwent, upon irradiation with visible light, a ruthenium-catalyzed (2.5 mol %) intermolecular [2+2] photocycloaddition to olefins, which after hydrolysis led to chiral cyclobutanecarbaldehydes (17 examples, 49-74 % yield), with high diastereo- and enantioselectivities. Ru(bpz)3 (PF6 )2 was utilized as the ruthenium catalyst and laser flash photolysis studies show that the catalyst operates exclusively by triplet-energy transfer (sensitization). A catalytic system was devised with a chiral secondary amine co-catalyst. In the catalytic reactions, Ru(bpy)3 (PF6 )2 was employed, and laser flash photolysis experiments suggest it undergoes both electron and energy transfer. However, experimental evidence supports the hypothesis that energy transfer is the only productive quenching mechanism. Control experiments using Ir(ppy)3 showed no catalysis for the intermolecular [2+2] photocycloaddition of an eniminium ion.
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Affiliation(s)
- Fabian M. Hörmann
- Department Chemie and Catalysis Research Center (CRC)Technische Universität MünchenLichtenbergstraße 485747GarchingGermany
| | - Christoph Kerzig
- Department of ChemistryUniversity of BaselSt. Johanns-Ring 194056BaselSwitzerland
| | - Tim S. Chung
- Department Chemie and Catalysis Research Center (CRC)Technische Universität MünchenLichtenbergstraße 485747GarchingGermany
| | - Andreas Bauer
- Department Chemie and Catalysis Research Center (CRC)Technische Universität MünchenLichtenbergstraße 485747GarchingGermany
| | - Oliver S. Wenger
- Department of ChemistryUniversity of BaselSt. Johanns-Ring 194056BaselSwitzerland
| | - Thorsten Bach
- Department Chemie and Catalysis Research Center (CRC)Technische Universität MünchenLichtenbergstraße 485747GarchingGermany
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161
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Photoenzymatic enantioselective intermolecular radical hydroalkylation. Nature 2020; 584:69-74. [PMID: 32512577 DOI: 10.1038/s41586-020-2406-6] [Citation(s) in RCA: 130] [Impact Index Per Article: 32.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2020] [Accepted: 05/29/2020] [Indexed: 01/14/2023]
Abstract
Enzymes are increasingly explored for use in asymmetric synthesis1-3, but their applications are generally limited by the reactions available to naturally occurring enzymes. Recently, interest in photocatalysis4 has spurred the discovery of novel reactivity from known enzymes5. However, so far photoinduced enzymatic catalysis6 has not been used for the cross-coupling of two molecules. For example, the intermolecular coupling of alkenes with α-halo carbonyl compounds through a visible-light-induced radical hydroalkylation, which could provide access to important γ-chiral carbonyl compounds, has not yet been achieved by enzymes. The major challenges are the inherent poor photoreactivity of enzymes and the difficulty in achieving stereochemical control of the remote prochiral radical intermediate7. Here we report a visible-light-induced intermolecular radical hydroalkylation of terminal alkenes that does not occur naturally, catalysed by an 'ene' reductase using readily available α-halo carbonyl compounds as reactants. This method provides an efficient approach to the synthesis of various carbonyl compounds bearing a γ-stereocentre with excellent yields and enantioselectivities (up to 99 per cent yield with 99 per cent enantiomeric excess), which otherwise are difficult to access using chemocatalysis. Mechanistic studies suggest that the formation of the complex of the substrates (α-halo carbonyl compounds) and the 'ene' reductase triggers the enantioselective photoinduced radical reaction. Our work further expands the reactivity repertoire of biocatalytic, synthetically useful asymmetric transformations by the merger of photocatalysis and enzyme catalysis.
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162
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Krištofíková D, Modrocká V, Mečiarová M, Šebesta R. Green Asymmetric Organocatalysis. CHEMSUSCHEM 2020; 13:2828-2858. [PMID: 32141177 DOI: 10.1002/cssc.202000137] [Citation(s) in RCA: 70] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Revised: 03/05/2020] [Indexed: 06/10/2023]
Abstract
Asymmetric organocatalysis is becoming one of the main tools for the synthesis of chiral compounds that are needed as medicines, crop protection agents, and other bioactive molecules. It can be effectively combined with various green chemistry methodologies. Intensification techniques, such as ball milling, flow, high pressure, or light, bring not only higher yields, faster reactions, and easier product isolation, but also new reactivities. More sustainable reaction media, such as ionic liquids, deep eutectic solvents, green solvent alternatives, and water, also considerably enhance the sustainability profile of many organocatalytic reactions.
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Affiliation(s)
- Dominika Krištofíková
- Department of Organic Chemistry, Faculty of Natural Sciences, Comenius University in Bratislava, Mlynska dolina, Ilkovicova 6, 842 15, Bratislava, Slovakia
| | - Viktória Modrocká
- Department of Organic Chemistry, Faculty of Natural Sciences, Comenius University in Bratislava, Mlynska dolina, Ilkovicova 6, 842 15, Bratislava, Slovakia
| | - Mária Mečiarová
- Department of Organic Chemistry, Faculty of Natural Sciences, Comenius University in Bratislava, Mlynska dolina, Ilkovicova 6, 842 15, Bratislava, Slovakia
| | - Radovan Šebesta
- Department of Organic Chemistry, Faculty of Natural Sciences, Comenius University in Bratislava, Mlynska dolina, Ilkovicova 6, 842 15, Bratislava, Slovakia
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163
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Hong BC. Enantioselective synthesis enabled by visible light photocatalysis. Org Biomol Chem 2020; 18:4298-4353. [PMID: 32458948 DOI: 10.1039/d0ob00759e] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/28/2024]
Abstract
Enantioselective photoreaction has been a synthetic challenge for decades. With the continuous development of modern visible light photocatalysis and asymmetric catalysis, remarkable advances have been achieved through the synergistic action of these catalytic reactions, allowing the construction of various enantiomerically enriched molecules that were once inaccessible using photocatalytic reactions. This review presents some of the contemporary developments in enantioselective visible-light photocatalysis reactions, covering the period from 2008 to March 2020, with the contents classified by catalysis type.
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Affiliation(s)
- Bor-Cherng Hong
- Department of Chemistry and Biochemistry, National Chung Cheng University, Chia-Yi, 621, Taiwan, Republic of China.
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164
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Pagire SK, Kumagai N, Shibasaki M. Introduction of a 7-aza-6-MeO-indoline auxiliary in Lewis-acid/photoredox cooperative catalysis: highly enantioselective aminomethylation of α,β-unsaturated amides. Chem Sci 2020; 11:5168-5174. [PMID: 34122973 PMCID: PMC8159422 DOI: 10.1039/d0sc01890b] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
An efficient cooperative chiral Lewis acid/photoredox catalytic system for engaging highly reactive radicals in highly enantioselective conjugate addition to α,β-unsaturated carbonyls is highly desirable. Direct photoexcitation of unbound substrates typically induces undesired background pathways for racemic products and remains a formidable challenge to be addressed in the area of enantioselective photocatalysis. Herein, we report a cooperative catalytic system comprising a chiral Cu(i) complex and an Ir(iii) photocatalyst fueled by visible-light irradiation that allows for seamless integration of the catalytic formation of α-amino alkyl radicals and subsequent enantioselective addition to α,β-unsaturated amides. A 7-aza-6-MeO-indoline attachment on the amide substrates plays a pivotal role in suppressing the undesired pathways, resulting in excellent enantioselectivity and enabling expedited access to valuable γ-aminobutyramides. The indoline amide was readily diversified with full recovery of the azaindoline attachment, highlighting the synthetic utility of this cooperative catalytic system. An efficient cooperative chiral Lewis acid and photoredox catalytic system towards the highly enantioselective radical conjugate addition of α-amino radicals to α,β-unsaturated amides is developed with the implementation of unique auxiliaries.![]()
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Affiliation(s)
- Santosh K Pagire
- Institute of Microbial Chemistry (BIKAKEN) 3-14-23, Kamiosaki Shinagawa-ku Tokyo 141-0021 Japan
| | - Naoya Kumagai
- Institute of Microbial Chemistry (BIKAKEN) 3-14-23, Kamiosaki Shinagawa-ku Tokyo 141-0021 Japan
| | - Masakatsu Shibasaki
- Institute of Microbial Chemistry (BIKAKEN) 3-14-23, Kamiosaki Shinagawa-ku Tokyo 141-0021 Japan
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165
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Urushima A, Taura D, Tanaka M, Horimoto N, Tanabe J, Ousaka N, Mori T, Yashima E. Enantiodifferentiating Photodimerization of a 2,6‐Disubstituted Anthracene Assisted by Supramolecular Double‐Helix Formation with Chiral Amines. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201916103] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Akio Urushima
- Department of Molecular and Macromolecular ChemistryGraduate School of EngineeringNagoya University Chikusa-ku Nagoya 464-8603 Japan
| | - Daisuke Taura
- Department of Molecular and Macromolecular ChemistryGraduate School of EngineeringNagoya University Chikusa-ku Nagoya 464-8603 Japan
- Department of Molecular Design and EngineeringGraduate School of EngineeringNagoya University Chikusa-ku Nagoya 464-8603 Japan
| | - Makoto Tanaka
- Department of Molecular Design and EngineeringGraduate School of EngineeringNagoya University Chikusa-ku Nagoya 464-8603 Japan
| | - Naomichi Horimoto
- Department of Molecular Design and EngineeringGraduate School of EngineeringNagoya University Chikusa-ku Nagoya 464-8603 Japan
| | - Junki Tanabe
- Department of Molecular Design and EngineeringGraduate School of EngineeringNagoya University Chikusa-ku Nagoya 464-8603 Japan
| | - Naoki Ousaka
- Department of Molecular and Macromolecular ChemistryGraduate School of EngineeringNagoya University Chikusa-ku Nagoya 464-8603 Japan
- Department of Molecular Design and EngineeringGraduate School of EngineeringNagoya University Chikusa-ku Nagoya 464-8603 Japan
| | - Tadashi Mori
- Department of Applied ChemistryGraduate School of EngineeringOsaka University 2-1 Yamada-oka Suita Osaka 565-0871 Japan
| | - Eiji Yashima
- Department of Molecular and Macromolecular ChemistryGraduate School of EngineeringNagoya University Chikusa-ku Nagoya 464-8603 Japan
- Department of Molecular Design and EngineeringGraduate School of EngineeringNagoya University Chikusa-ku Nagoya 464-8603 Japan
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166
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Urushima A, Taura D, Tanaka M, Horimoto N, Tanabe J, Ousaka N, Mori T, Yashima E. Enantiodifferentiating Photodimerization of a 2,6‐Disubstituted Anthracene Assisted by Supramolecular Double‐Helix Formation with Chiral Amines. Angew Chem Int Ed Engl 2020; 59:7478-7486. [DOI: 10.1002/anie.201916103] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2019] [Revised: 03/16/2020] [Indexed: 01/12/2023]
Affiliation(s)
- Akio Urushima
- Department of Molecular and Macromolecular ChemistryGraduate School of EngineeringNagoya University Chikusa-ku Nagoya 464-8603 Japan
| | - Daisuke Taura
- Department of Molecular and Macromolecular ChemistryGraduate School of EngineeringNagoya University Chikusa-ku Nagoya 464-8603 Japan
- Department of Molecular Design and EngineeringGraduate School of EngineeringNagoya University Chikusa-ku Nagoya 464-8603 Japan
| | - Makoto Tanaka
- Department of Molecular Design and EngineeringGraduate School of EngineeringNagoya University Chikusa-ku Nagoya 464-8603 Japan
| | - Naomichi Horimoto
- Department of Molecular Design and EngineeringGraduate School of EngineeringNagoya University Chikusa-ku Nagoya 464-8603 Japan
| | - Junki Tanabe
- Department of Molecular Design and EngineeringGraduate School of EngineeringNagoya University Chikusa-ku Nagoya 464-8603 Japan
| | - Naoki Ousaka
- Department of Molecular and Macromolecular ChemistryGraduate School of EngineeringNagoya University Chikusa-ku Nagoya 464-8603 Japan
- Department of Molecular Design and EngineeringGraduate School of EngineeringNagoya University Chikusa-ku Nagoya 464-8603 Japan
| | - Tadashi Mori
- Department of Applied ChemistryGraduate School of EngineeringOsaka University 2-1 Yamada-oka Suita Osaka 565-0871 Japan
| | - Eiji Yashima
- Department of Molecular and Macromolecular ChemistryGraduate School of EngineeringNagoya University Chikusa-ku Nagoya 464-8603 Japan
- Department of Molecular Design and EngineeringGraduate School of EngineeringNagoya University Chikusa-ku Nagoya 464-8603 Japan
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167
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Xu N, Li B, Wang C, Uchiyama M. Sila‐ and Germacarboxylic Acids: Precursors for the Corresponding Silyl and Germyl Radicals. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202003070] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Ning‐Xin Xu
- Graduate School of Pharmaceutical Sciences The University of Tokyo 7-3-1 Hongo, Bunkyo-ku Tokyo 113-0033 Japan
| | - Bi‐Xiao Li
- Graduate School of Pharmaceutical Sciences The University of Tokyo 7-3-1 Hongo, Bunkyo-ku Tokyo 113-0033 Japan
| | - Chao Wang
- Graduate School of Pharmaceutical Sciences The University of Tokyo 7-3-1 Hongo, Bunkyo-ku Tokyo 113-0033 Japan
- Cluster for Pioneering Research (CPR) Advanced Elements Chemistry Laboratory RIKEN 2-1 Hirosawa Wako Saitama 351-0198 Japan
| | - Masanobu Uchiyama
- Graduate School of Pharmaceutical Sciences The University of Tokyo 7-3-1 Hongo, Bunkyo-ku Tokyo 113-0033 Japan
- Cluster for Pioneering Research (CPR) Advanced Elements Chemistry Laboratory RIKEN 2-1 Hirosawa Wako Saitama 351-0198 Japan
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168
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Xu N, Li B, Wang C, Uchiyama M. Sila‐ and Germacarboxylic Acids: Precursors for the Corresponding Silyl and Germyl Radicals. Angew Chem Int Ed Engl 2020; 59:10639-10644. [DOI: 10.1002/anie.202003070] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Indexed: 11/08/2022]
Affiliation(s)
- Ning‐Xin Xu
- Graduate School of Pharmaceutical Sciences The University of Tokyo 7-3-1 Hongo, Bunkyo-ku Tokyo 113-0033 Japan
| | - Bi‐Xiao Li
- Graduate School of Pharmaceutical Sciences The University of Tokyo 7-3-1 Hongo, Bunkyo-ku Tokyo 113-0033 Japan
| | - Chao Wang
- Graduate School of Pharmaceutical Sciences The University of Tokyo 7-3-1 Hongo, Bunkyo-ku Tokyo 113-0033 Japan
- Cluster for Pioneering Research (CPR) Advanced Elements Chemistry Laboratory RIKEN 2-1 Hirosawa Wako Saitama 351-0198 Japan
| | - Masanobu Uchiyama
- Graduate School of Pharmaceutical Sciences The University of Tokyo 7-3-1 Hongo, Bunkyo-ku Tokyo 113-0033 Japan
- Cluster for Pioneering Research (CPR) Advanced Elements Chemistry Laboratory RIKEN 2-1 Hirosawa Wako Saitama 351-0198 Japan
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169
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Rigotti T, Mas-Ballesté R, Alemán J. Enantioselective Aminocatalytic [2 + 2] Cycloaddition through Visible Light Excitation. ACS Catal 2020. [DOI: 10.1021/acscatal.0c01413] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Thomas Rigotti
- Organic Chemistry Department, Universidad Autónoma de Madrid, 28049 Madrid, Spain
| | - Rubén Mas-Ballesté
- Inorganic Chemistry Department, Universidad Autónoma de Madrid, 28049 Madrid, Spain
- Institute for Advanced Research in Chemical Sciences (IAdChem), Universidad Autónoma de Madrid, 28049 Madrid, Spain
| | - José Alemán
- Organic Chemistry Department, Universidad Autónoma de Madrid, 28049 Madrid, Spain
- Institute for Advanced Research in Chemical Sciences (IAdChem), Universidad Autónoma de Madrid, 28049 Madrid, Spain
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170
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Zhang HH, Chen H, Zhu C, Yu S. A review of enantioselective dual transition metal/photoredox catalysis. Sci China Chem 2020. [DOI: 10.1007/s11426-019-9701-5] [Citation(s) in RCA: 55] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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171
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Hörmann FM, Kerzig C, Chung TS, Bauer A, Wenger OS, Bach T. Triplet Energy Transfer from Ruthenium Complexes to Chiral Eniminium Ions: Enantioselective Synthesis of Cyclobutanecarbaldehydes by [2+2] Photocycloaddition. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202001634] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Fabian M. Hörmann
- Department Chemie and Catalysis Research Center (CRC)Technische Universität München Lichtenbergstraße 4 85747 Garching Germany
| | - Christoph Kerzig
- Department of ChemistryUniversity of Basel St. Johanns-Ring 19 4056 Basel Switzerland
| | - Tim S. Chung
- Department Chemie and Catalysis Research Center (CRC)Technische Universität München Lichtenbergstraße 4 85747 Garching Germany
| | - Andreas Bauer
- Department Chemie and Catalysis Research Center (CRC)Technische Universität München Lichtenbergstraße 4 85747 Garching Germany
| | - Oliver S. Wenger
- Department of ChemistryUniversity of Basel St. Johanns-Ring 19 4056 Basel Switzerland
| | - Thorsten Bach
- Department Chemie and Catalysis Research Center (CRC)Technische Universität München Lichtenbergstraße 4 85747 Garching Germany
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172
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Liao J, Ouyang L, Lai Y, Luo R. Photoredox-Catalyzed Oxy-/Aminofluoroalkylative Cyclization of Alkenes. J Org Chem 2020; 85:5590-5597. [DOI: 10.1021/acs.joc.0c00457] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Jianhua Liao
- School of Pharmaceutical Sciences, Gannan Medical University, Ganzhou, 341000, Jiangxi Province, P. R. China
- School of Pharmacy, University of Wisconsin—Madison, Madison, Wisconsin 53705, United States
| | - Lu Ouyang
- School of Pharmaceutical Sciences, Gannan Medical University, Ganzhou, 341000, Jiangxi Province, P. R. China
| | - Yinlong Lai
- College of Chemistry and Environmental Engineering, Shaoguan University, Shaoguan 512005, China
| | - Renshi Luo
- School of Pharmaceutical Sciences, Gannan Medical University, Ganzhou, 341000, Jiangxi Province, P. R. China
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173
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Song GT, Qu CH, Chen JH, Xu ZG, Zhou CH, Chen ZZ. Synthesis of monofluorooxazoles with quaternary C-F centers through photoredox-catalyzed radical addition of methylene-2-oxazolines. Org Biomol Chem 2020; 18:2223-2226. [PMID: 32162639 DOI: 10.1039/d0ob00267d] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel photoredox-catalyzed radical addition of methylene-2-oxazolines has been developed under visible light irradiation to synthesize monofluorooxazoles with a quaternary carbon center using 2-bromo-2-fluoro-3-oxo-3-phenylpropionates as radical source. This method with a simple protocol, scalability and high yield offers a facile path to get diverse monofluorinated oxazoles with quaternary C-F centers, which are a class of highly valuable motifs and synthons.
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Affiliation(s)
- Gui-Ting Song
- College of Pharmacy, National & Local Joint Engineering Research Center of Targeted and Innovative Therapeutics, Chongqing Key Laboratory of Kinase Modulators as Innovative Medicine, Chongqing University of Arts and Sciences, Chongqing 402160, China. and Institute of Bioorganic & Medicinal Chemistry, Key Laboratory of Applied Chemistry of Chongqing Municipality, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China
| | - Chuan-Hua Qu
- College of Pharmacy, National & Local Joint Engineering Research Center of Targeted and Innovative Therapeutics, Chongqing Key Laboratory of Kinase Modulators as Innovative Medicine, Chongqing University of Arts and Sciences, Chongqing 402160, China.
| | - Jin-Hong Chen
- College of Pharmacy, National & Local Joint Engineering Research Center of Targeted and Innovative Therapeutics, Chongqing Key Laboratory of Kinase Modulators as Innovative Medicine, Chongqing University of Arts and Sciences, Chongqing 402160, China.
| | - Zhi-Gang Xu
- College of Pharmacy, National & Local Joint Engineering Research Center of Targeted and Innovative Therapeutics, Chongqing Key Laboratory of Kinase Modulators as Innovative Medicine, Chongqing University of Arts and Sciences, Chongqing 402160, China.
| | - Cheng-He Zhou
- Institute of Bioorganic & Medicinal Chemistry, Key Laboratory of Applied Chemistry of Chongqing Municipality, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China
| | - Zhong-Zhu Chen
- College of Pharmacy, National & Local Joint Engineering Research Center of Targeted and Innovative Therapeutics, Chongqing Key Laboratory of Kinase Modulators as Innovative Medicine, Chongqing University of Arts and Sciences, Chongqing 402160, China.
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174
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Guo J, Fan Y, Lu Y, Zheng S, Su C. Visible‐Light Photocatalysis of Asymmetric [2+2] Cycloaddition in Cage‐Confined Nanospace Merging Chirality with Triplet‐State Photosensitization. Angew Chem Int Ed Engl 2020; 59:8661-8669. [DOI: 10.1002/anie.201916722] [Citation(s) in RCA: 55] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2019] [Indexed: 11/12/2022]
Affiliation(s)
- Jing Guo
- MOE Laboratory of Bioinorganic and Synthetic Chemistry Lehn Institute of Functional Materials School of Chemistry Sun Yat-Sen University Guangzhou 510275 China
| | - Yan‐Zhong Fan
- MOE Laboratory of Bioinorganic and Synthetic Chemistry Lehn Institute of Functional Materials School of Chemistry Sun Yat-Sen University Guangzhou 510275 China
| | - Yu‐Lin Lu
- MOE Laboratory of Bioinorganic and Synthetic Chemistry Lehn Institute of Functional Materials School of Chemistry Sun Yat-Sen University Guangzhou 510275 China
| | - Shao‐Ping Zheng
- MOE Laboratory of Bioinorganic and Synthetic Chemistry Lehn Institute of Functional Materials School of Chemistry Sun Yat-Sen University Guangzhou 510275 China
| | - Cheng‐Yong Su
- MOE Laboratory of Bioinorganic and Synthetic Chemistry Lehn Institute of Functional Materials School of Chemistry Sun Yat-Sen University Guangzhou 510275 China
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175
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Guo J, Fan Y, Lu Y, Zheng S, Su C. Visible‐Light Photocatalysis of Asymmetric [2+2] Cycloaddition in Cage‐Confined Nanospace Merging Chirality with Triplet‐State Photosensitization. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201916722] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Jing Guo
- MOE Laboratory of Bioinorganic and Synthetic Chemistry Lehn Institute of Functional Materials School of Chemistry Sun Yat-Sen University Guangzhou 510275 China
| | - Yan‐Zhong Fan
- MOE Laboratory of Bioinorganic and Synthetic Chemistry Lehn Institute of Functional Materials School of Chemistry Sun Yat-Sen University Guangzhou 510275 China
| | - Yu‐Lin Lu
- MOE Laboratory of Bioinorganic and Synthetic Chemistry Lehn Institute of Functional Materials School of Chemistry Sun Yat-Sen University Guangzhou 510275 China
| | - Shao‐Ping Zheng
- MOE Laboratory of Bioinorganic and Synthetic Chemistry Lehn Institute of Functional Materials School of Chemistry Sun Yat-Sen University Guangzhou 510275 China
| | - Cheng‐Yong Su
- MOE Laboratory of Bioinorganic and Synthetic Chemistry Lehn Institute of Functional Materials School of Chemistry Sun Yat-Sen University Guangzhou 510275 China
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176
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Harsh S, Kumar S, Sharma R, Kumar Y, Kumar R. Chlorophyll triggered one-pot synthesis of 3,4-dihydropyrimidin-2(1H)-ones via photo induced electron transfer reaction. ARAB J CHEM 2020. [DOI: 10.1016/j.arabjc.2019.11.002] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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177
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Choi I, Müller V, Lole G, Köhler R, Karius V, Viöl W, Jooss C, Ackermann L. Photoinduced Heterogeneous C-H Arylation by a Reusable Hybrid Copper Catalyst. Chemistry 2020; 26:3509-3514. [PMID: 31943400 PMCID: PMC7155010 DOI: 10.1002/chem.202000192] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Indexed: 01/22/2023]
Abstract
Heterogeneous copper catalysis enabled photoinduced C-H arylations under exceedingly mild conditions at room temperature. The versatile hybrid copper catalyst provided step-economical access to arylated heteroarenes, terpenes and alkaloid natural products with various aryl halides. The hybrid copper catalyst could be reused without significant loss of catalytic efficacy. Detailed studies in terms of TEM, HRTEM and XPS analysis of the hybrid copper catalyst, among others, supported its outstanding stability and reusability.
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Affiliation(s)
- Isaac Choi
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität, Tammanstrasse 2, 37077, Göttingen, Germany
| | - Valentin Müller
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität, Tammanstrasse 2, 37077, Göttingen, Germany
| | - Gaurav Lole
- Institut für Materialphysik, Georg-August-Universität, Friedrich-Hund-Platz 1, 37077, Göttingen, Germany
| | - Robert Köhler
- University of Applied Sciences and Arts, Laboratory of Laser and Plasma Technologies, Von-Ossietzky-Strasse 99, 37085, Göttingen, Germany
| | - Volker Karius
- Geowissenschaftliches Zentrum, Georg-August-Universität, Goldschmidtstrasse 3, 37077, Göttingen, Germany
| | - Wolfgang Viöl
- University of Applied Sciences and Arts, Laboratory of Laser and Plasma Technologies, Von-Ossietzky-Strasse 99, 37085, Göttingen, Germany
| | - Christian Jooss
- Institut für Materialphysik, Georg-August-Universität, Friedrich-Hund-Platz 1, 37077, Göttingen, Germany
| | - Lutz Ackermann
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität, Tammanstrasse 2, 37077, Göttingen, Germany.,Woehler Research Institute for Sustainable Chemistry (WISCh), Georg-August-Universität Göttingen, Tammannstrasse 2, 37077, Göttingen, Germany
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178
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Mavroskoufis A, Rajes K, Golz P, Agrawal A, Ruß V, Götze JP, Hopkinson MN. N-Heterocyclic Carbene Catalyzed Photoenolization/Diels-Alder Reaction of Acid Fluorides. Angew Chem Int Ed Engl 2020; 59:3190-3194. [PMID: 31814280 PMCID: PMC7027522 DOI: 10.1002/anie.201914456] [Citation(s) in RCA: 88] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Indexed: 11/23/2022]
Abstract
The combination of light activation and N-heterocyclic carbene (NHC) organocatalysis has enabled the use of acid fluorides as substrates in a UVA-light-mediated photochemical transformation previously observed only with aromatic aldehydes and ketones. Stoichiometric studies and TD-DFT calculations support a mechanism involving the photoactivation of an ortho-toluoyl azolium intermediate, which exhibits "ketone-like" photochemical reactivity under UVA irradiation. Using this photo-NHC catalysis approach, a novel photoenolization/Diels-Alder (PEDA) process was developed that leads to diverse isochroman-1-one derivatives.
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Affiliation(s)
- Andreas Mavroskoufis
- Institute of Chemistry and BiochemistryFreie Universität BerlinTakustraße 314195BerlinGermany
| | - Keerthana Rajes
- Institute of Chemistry and BiochemistryFreie Universität BerlinTakustraße 314195BerlinGermany
| | - Paul Golz
- Institute of Chemistry and BiochemistryFreie Universität BerlinTakustraße 314195BerlinGermany
| | - Arush Agrawal
- Institute of Chemistry and BiochemistryFreie Universität BerlinTakustraße 314195BerlinGermany
| | - Vincent Ruß
- Institute of Chemistry and BiochemistryFreie Universität BerlinTakustraße 314195BerlinGermany
| | - Jan P. Götze
- Institute of Chemistry and BiochemistryFreie Universität BerlinTakustraße 314195BerlinGermany
| | - Matthew N. Hopkinson
- Institute of Chemistry and BiochemistryFreie Universität BerlinTakustraße 314195BerlinGermany
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179
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Shi Q, Ye J. Deracemization Enabled by Visible-Light Photocatalysis. Angew Chem Int Ed Engl 2020; 59:4998-5001. [PMID: 32031314 DOI: 10.1002/anie.201914858] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2019] [Indexed: 01/12/2023]
Abstract
Deracemization is an ideal but challenging strategy for the conversion of a racemic mixture into a single enantiomer. Recent studies have demonstrated that visible-light photocatalysis could be utilized to promote selective deracemization of axially chiral allenes as well as cyclopropylquinolones and cyclic ureas with central chirality either through energy transfer or through a sequence of electron, proton, and hydrogen-atom transfer.
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Affiliation(s)
- Qinglong Shi
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, P. R. China
| | - Juntao Ye
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, P. R. China
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180
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Affiliation(s)
- Qinglong Shi
- Shanghai Key Laboratory for Molecular Engineering of Chiral DrugsSchool of Chemistry and Chemical EngineeringShanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 P. R. China
| | - Juntao Ye
- Shanghai Key Laboratory for Molecular Engineering of Chiral DrugsSchool of Chemistry and Chemical EngineeringShanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 P. R. China
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181
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Dong CL, Ding X, Huang LQ, He YH, Guan Z. Merging Visible Light Photocatalysis and l-/d-Proline Catalysis: Direct Asymmetric Oxidative Dearomatization of 2-Arylindoles To Access C2-Quaternary Indolin-3-ones. Org Lett 2020; 22:1076-1080. [PMID: 31975600 DOI: 10.1021/acs.orglett.9b04613] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
A mild and effective method for asymmetric synthesis of C2-quaternary indolin-3-ones directly from 2-arylindoles by combining visible light photocatalysis and organocatalysis is described. In this reaction, 2-substituted indoles undergo photocatalyzed oxidative dearomatization, followed by an organocatalyzed asymmetric Mannich reaction with ketones or aldehydes. Products with opposite configurations are easily obtained in satisfactory yields with excellent enantio- and diastereoselectivity by employing readily available l- and d-proline as chiral organocatalysts.
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Affiliation(s)
- Chun-Lin Dong
- Key Laboratory of Applied Chemistry of Chongqing Municipality, School of Chemistry and Chemical Engineering , Southwest University , Chongqing 400715 , China
| | - Xuan Ding
- Yunnan Branch, Institute of Medicinal Plant Development , Chinese Academy of Medical Sciences & Peking Union Medical College , Yunnan 666100 , China
| | - Lan-Qian Huang
- Key Laboratory of Applied Chemistry of Chongqing Municipality, School of Chemistry and Chemical Engineering , Southwest University , Chongqing 400715 , China
| | - Yan-Hong He
- Key Laboratory of Applied Chemistry of Chongqing Municipality, School of Chemistry and Chemical Engineering , Southwest University , Chongqing 400715 , China
| | - Zhi Guan
- Key Laboratory of Applied Chemistry of Chongqing Municipality, School of Chemistry and Chemical Engineering , Southwest University , Chongqing 400715 , China
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182
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Zhang Y, Sun Y, Chen B, Xu M, Li C, Zhang D, Zhang G. Copper-Catalyzed Photoinduced Enantioselective Dual Carbofunctionalization of Alkenes. Org Lett 2020; 22:1490-1494. [DOI: 10.1021/acs.orglett.0c00071] [Citation(s) in RCA: 49] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yajing Zhang
- Institute of Pharmaceutical Science, China Pharmaceutical University, Nanjing 210009, China
| | - Youwen Sun
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Center for Excellence in Molecular Synthesis, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, P. R. China
| | - Bin Chen
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Center for Excellence in Molecular Synthesis, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, P. R. China
| | - Meichen Xu
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Center for Excellence in Molecular Synthesis, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, P. R. China
| | - Chen Li
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Center for Excellence in Molecular Synthesis, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, P. R. China
| | - Dayong Zhang
- Institute of Pharmaceutical Science, China Pharmaceutical University, Nanjing 210009, China
| | - Guozhu Zhang
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Center for Excellence in Molecular Synthesis, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, P. R. China
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183
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Chen S, Zhong Q, Zhu H, Liu C, Zhuang P, Sun W. Visible-Light-Induced C-C Coupling Reaction to Synthesize Bipyridine From 3-Cyano-1,4-Dihydropyridines. Front Chem 2020; 7:940. [PMID: 32010676 PMCID: PMC6978658 DOI: 10.3389/fchem.2019.00940] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2019] [Accepted: 12/24/2019] [Indexed: 12/02/2022] Open
Abstract
A concise and efficient photocatalytic C–C coupling of 1-benzyl-3-cyano-1, 4-dihydropyridine for synthesis of 1,1′-dibenzyl-3, 3′-dicyano-1,1′,4,4′-tetrahydro-4, 4′-bipyridine is described. The reporter system provides a novel technique that facilitates synthesis of C–C coupling derivatives without addition of transition metals and oxidants or other additives. A plausible synthetic pathway is proposed, and the coupling product was characterized via nuclear magnetic resonance spectroscopy (1H and 13C NMR), high-resolution electrospray ionization mass spectrometry (ESI-HRMS) and X-ray analyses.
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Affiliation(s)
- Shijun Chen
- School of Pharmacy, North China University of Science and Technology, Tangshan, China
| | - Qidi Zhong
- School of Pharmacy, North China University of Science and Technology, Tangshan, China
| | - Hao Zhu
- School of Public Health, North China University of Science and Technology, Tangshan, China
| | - Chunyan Liu
- School of Pharmacy, North China University of Science and Technology, Tangshan, China
| | - Pengyu Zhuang
- School of Pharmacy, North China University of Science and Technology, Tangshan, China
| | - Wuji Sun
- School of Public Health, North China University of Science and Technology, Tangshan, China
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184
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Li S, Xiang S, Tan B. Chiral Phosphoric Acid Creates Promising Opportunities for Enantioselective Photoredox Catalysis. CHINESE J CHEM 2020. [DOI: 10.1002/cjoc.201900472] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Shaoyu Li
- Department of Chemistry and Shenzhen Grubbs InstituteSouthern University of Science and Technology Shenzhen Guangdong 518055 China
- Academy for Advanced Interdisciplinary Studies and Department of ChemistrySouthern University of Science and Technology Shenzhen Guangdong 518055 China
| | - Shao‐Hua Xiang
- Department of Chemistry and Shenzhen Grubbs InstituteSouthern University of Science and Technology Shenzhen Guangdong 518055 China
- Academy for Advanced Interdisciplinary Studies and Department of ChemistrySouthern University of Science and Technology Shenzhen Guangdong 518055 China
| | - Bin Tan
- Department of Chemistry and Shenzhen Grubbs InstituteSouthern University of Science and Technology Shenzhen Guangdong 518055 China
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185
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Hanson CS, Psaltakis MC, Cortes JJ, Siddiqi SS, Devery JJ. Investigation of Lewis Acid-Carbonyl Solution Interactions via Infrared-Monitored Titration. J Org Chem 2020; 85:820-832. [PMID: 31830419 DOI: 10.1021/acs.joc.9b02822] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Lewis acid-activation of carbonyl-containing substrates is broadly utilized in organic synthesis. In order to facilitate the development of novel reaction pathways and understand existing methods, it is necessary to determine the solution interactions between Lewis acids and Lewis bases. Herein, we report the application of in situ infrared spectroscopy and solution conductivity toward the identification of the solution structures formed when a range of carbonyl compounds are combined with catalytically active metal halide Lewis acids under synthetically relevant conditions. These data are consistent with formation of Lewis acid-dependent complexes, where metals of low relative Lewis acidity display no ground state interaction with carbonyls. Conversely, we observed the formation of polyligated complexes when stronger Lewis acids (SnCl4, TiCl4, ZrCl4, FeCl3, and AlCl3) were treated with ketones, aldehydes, and esters. This collection of observations is intended to assist the synthetic chemist in the design of new catalysts and the development of novel methods.
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Affiliation(s)
- Carly S Hanson
- Department of Chemistry & Biochemistry , Loyola University Chicago , Flanner Hall, 1068 W Sheridan Road , Chicago , Illinois 60660 , United States
| | - Mary C Psaltakis
- Department of Chemistry & Biochemistry , Loyola University Chicago , Flanner Hall, 1068 W Sheridan Road , Chicago , Illinois 60660 , United States
| | - Janiel J Cortes
- Department of Chemistry & Biochemistry , Loyola University Chicago , Flanner Hall, 1068 W Sheridan Road , Chicago , Illinois 60660 , United States
| | - Sameera S Siddiqi
- Department of Chemistry & Biochemistry , Loyola University Chicago , Flanner Hall, 1068 W Sheridan Road , Chicago , Illinois 60660 , United States
| | - James J Devery
- Department of Chemistry & Biochemistry , Loyola University Chicago , Flanner Hall, 1068 W Sheridan Road , Chicago , Illinois 60660 , United States
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186
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Mavroskoufis A, Rajes K, Golz P, Agrawal A, Ruß V, Götze JP, Hopkinson MN. Durch N‐heterocyclische Carbene katalysierte Photoenolisierungs‐Diels‐Alder‐Reaktion von Säurefluoriden. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201914456] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Andreas Mavroskoufis
- Institut für Chemie und Biochemie Freie Universität Berlin Takustraße 3 14195 Berlin Deutschland
| | - Keerthana Rajes
- Institut für Chemie und Biochemie Freie Universität Berlin Takustraße 3 14195 Berlin Deutschland
| | - Paul Golz
- Institut für Chemie und Biochemie Freie Universität Berlin Takustraße 3 14195 Berlin Deutschland
| | - Arush Agrawal
- Institut für Chemie und Biochemie Freie Universität Berlin Takustraße 3 14195 Berlin Deutschland
| | - Vincent Ruß
- Institut für Chemie und Biochemie Freie Universität Berlin Takustraße 3 14195 Berlin Deutschland
| | - Jan P. Götze
- Institut für Chemie und Biochemie Freie Universität Berlin Takustraße 3 14195 Berlin Deutschland
| | - Matthew N. Hopkinson
- Institut für Chemie und Biochemie Freie Universität Berlin Takustraße 3 14195 Berlin Deutschland
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187
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Takagi R, Tabuchi C. Enantioselective intramolecular [2 + 2] photocycloaddition using phosphoric acid as a chiral template. Org Biomol Chem 2020; 18:9261-9267. [PMID: 33150919 DOI: 10.1039/d0ob02054k] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The enantioselective intramolecular [2 + 2] photocycloaddition of 4-bishomoally-2-quinolone (quinolinone) using phosphoric acid as a chiral template has been developed. Mechanistic studies using several NMR measurement techniques and density functional theory (DFT) calculations indicate that π-π interactions between the phenyl ring on phosphoric acid and quinolinone play important roles in the enantioselectivity.
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Affiliation(s)
- Ryukichi Takagi
- Department of Chemistry, Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima 739-8526, Japan.
| | - Chihiro Tabuchi
- Department of Chemistry, Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima 739-8526, Japan.
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188
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Rigotti T, Alemán J. Visible light photocatalysis – from racemic to asymmetric activation strategies. Chem Commun (Camb) 2020; 56:11169-11190. [DOI: 10.1039/d0cc03738a] [Citation(s) in RCA: 53] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
The most significant contributions towards enantioselective photocatalysis have been described with a special emphasis on the various activation strategies.
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Affiliation(s)
- Thomas Rigotti
- Organic Chemistry Department
- Universidad Autónoma de Madrid
- 28049 Madrid
- Spain
| | - José Alemán
- Organic Chemistry Department
- Universidad Autónoma de Madrid
- 28049 Madrid
- Spain
- Institute for Advanced Research in Chemical Sciences (IAdChem)
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189
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Yang L, Qin L, Dou Y, Zhang D, Zhou Z, Wang S. High conversion and selectivity of photodimerization under air conditions by supramolecular oxidation restraint within a metallocage-like nanoreactor. CrystEngComm 2020. [DOI: 10.1039/d0ce00678e] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
The well-designed metal–organic cage Ce-BHP acts as an efficient catalyst and molecular nanoreactor for photodimerization of 9,10-anthraquinone under air condition.
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Affiliation(s)
- Lu Yang
- School of Chemistry and Chemical Engineering
- Shandong University of Technology
- Zibo
- P. R. China
| | - Lan Qin
- School of Chemistry and Chemical Engineering
- Shandong University of Technology
- Zibo
- P. R. China
| | - Yong Dou
- School of Chemistry and Chemical Engineering
- Shandong University of Technology
- Zibo
- P. R. China
| | - Daopeng Zhang
- School of Chemistry and Chemical Engineering
- Shandong University of Technology
- Zibo
- P. R. China
| | - Zhen Zhou
- School of Chemistry and Chemical Engineering
- Shandong University of Technology
- Zibo
- P. R. China
| | - Suna Wang
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology
- School of Chemistry and Chemical Engineering
- Liaocheng University
- Liaocheng 252059
- P. R. China
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190
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Yin Y, Zhao X, Qiao B, Jiang Z. Cooperative photoredox and chiral hydrogen-bonding catalysis. Org Chem Front 2020. [DOI: 10.1039/d0qo00276c] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Chiral hydrogen-bonding catalysis is a classic strategy in asymmetric organocatalysis. Recently, it has been used to cooperate with photoredox catalysis, becoming a powerful tool to access optical pure compounds via radical-based transformations.
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Affiliation(s)
- Yanli Yin
- School of Chemistry and Chemical Engineering
- Henan Normal University
- Xinxiang
- P. R. China
- College of Bioengineering
| | - Xiaowei Zhao
- Henan University
- Jinming Campus
- Kaifeng
- P. R. China
| | - Baokun Qiao
- Henan University
- Jinming Campus
- Kaifeng
- P. R. China
| | - Zhiyong Jiang
- School of Chemistry and Chemical Engineering
- Henan Normal University
- Xinxiang
- P. R. China
- Henan University
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191
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Zhao B, Wu Y, Yuan Y, Shi Z. Copper-catalysed Csp3–Csp cross-couplings between cyclobutanone oxime esters and terminal alkynes induced by visible light. Chem Commun (Camb) 2020; 56:4676-4679. [DOI: 10.1039/d0cc00988a] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
A novel transformation for the construction of Csp3–Csp bonds was achieved via a photo-induced copper-catalysed C–C bond cleavage.
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Affiliation(s)
- Binlin Zhao
- Department of Chemistry and Materials Science
- College of Science
- Nanjing Forestry University
- Nanjing 210037
- China
| | - Yixiao Wu
- State Key Laboratory of Coordination Chemistry
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing
- China
| | - Yu Yuan
- College of Chemistry and Chemical Engineering
- Yangzhou University
- Yangzhou 225002
- China
| | - Zhuangzhi Shi
- State Key Laboratory of Coordination Chemistry
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing
- China
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192
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Sato H, Takimoto K, Yoshida J, Yamagishi A. Vibrational circular dichroism towards asymmetric catalysis: chiral induction in substrates coordinated with copper( ii) ions. Phys Chem Chem Phys 2020; 22:24393-24398. [DOI: 10.1039/d0cp04827e] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The VCD method was applied for searching the origin of chirality selection in the asymmetric catalysis by Cu(ii) complexes. When 1-phenyl-1,3-butanedionato was coordinated, it was transformed to a twisted chiral form under the steric control.
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Affiliation(s)
- Hisako Sato
- Graduate School of Science and Engineering
- Ehime University
- Matsuyama 790-8577
- Japan
| | - Kazuyoshi Takimoto
- Graduate School of Science and Engineering
- Ehime University
- Matsuyama 790-8577
- Japan
| | - Jun Yoshida
- Department of Chemistry
- Kitasato University
- Sagamihara 252-0329
- Japan
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193
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Leverenz M, Merten C, Dreuw A, Bach T. Lewis Acid Catalyzed Enantioselective Photochemical Rearrangements on the Singlet Potential Energy Surface. J Am Chem Soc 2019; 141:20053-20057. [PMID: 31814393 PMCID: PMC6935867 DOI: 10.1021/jacs.9b12068] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
![]()
The oxadi-π-methane rearrangement of 2,4-cyclohexadienones
to bicyclic ketones was found to proceed with high enantioselectivity
(92–97% ee) in the presence of catalytic amounts
of a chiral Lewis acid (15 examples, 52–80% yield). A notable
feature of the transformation is the fact that it proceeds on the
singlet hypersurface and that no triplet intermediates are involved.
Rapid racemic background reactions were therefore avoided, and the
catalyst loading could be kept low (10 mol %). Computational studies
suggest that the enantioselectivity is determined within a Lewis acid
bound singlet intermediate via a conical intersection. The utility
of the method was demonstrated by a concise synthesis of the natural
product trans-chrysanthemic acid.
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Affiliation(s)
- Malte Leverenz
- Department Chemie and Catalysis Research Center (CRC) , Technische Universität München , Lichtenbergstraße 4 , 85747 Garching , Germany
| | - Christian Merten
- Fakultät für Chemie und Biochemie , Ruhr-Universität Bochum , Universitätsstraße 150 , 44801 Bochum , Germany
| | - Andreas Dreuw
- Interdisciplinary Center for Scientific Computing , Ruprecht-Karls Universität , Im Neuenheimer Feld 205A , 69120 Heidelberg , Germany
| | - Thorsten Bach
- Department Chemie and Catalysis Research Center (CRC) , Technische Universität München , Lichtenbergstraße 4 , 85747 Garching , Germany
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194
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Faßbender SI, Molloy JJ, Mück‐Lichtenfeld C, Gilmour R. Geometric E→Z Isomerisation of Alkenyl Silanes by Selective Energy Transfer Catalysis: Stereodivergent Synthesis of Triarylethylenes via a Formal anti-Metallometallation. Angew Chem Int Ed Engl 2019; 58:18619-18626. [PMID: 31541612 PMCID: PMC6916377 DOI: 10.1002/anie.201910169] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2019] [Indexed: 12/30/2022]
Abstract
An efficient geometrical E→Z isomerisation of alkenyl silanes is disclosed via selective energy transfer using an inexpensive organic sensitiser. Characterised by operational simplicity, short reaction times (2 h), and broad substrate tolerance, the reaction displays high selectivity for trisubstituted systems (Z/E up to 95:5). In contrast to thermal activation, directionality results from deconjugation of the π-system in the Z-isomer due to A1,3 -strain thereby inhibiting re-activation. The structural importance of the β-substituent logically prompted an investigation of mixed bis-nucleophiles (Si, Sn, B). These versatile linchpins also undergo facile isomerisation, thereby enabling a formal anti-metallometallation. Mechanistic interrogation, supported by a theoretical investigation, is disclosed together with application of the products to the stereospecific synthesis of biologically relevant target structures.
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Affiliation(s)
- Svenja I. Faßbender
- Organisch Chemisches InstitutWestfälische Wilhelms-Universität MünsterCorrensstraße 4048149MünsterGermany
| | - John J. Molloy
- Organisch Chemisches InstitutWestfälische Wilhelms-Universität MünsterCorrensstraße 4048149MünsterGermany
| | - Christian Mück‐Lichtenfeld
- Organisch Chemisches InstitutWestfälische Wilhelms-Universität MünsterCorrensstraße 4048149MünsterGermany
| | - Ryan Gilmour
- Organisch Chemisches InstitutWestfälische Wilhelms-Universität MünsterCorrensstraße 4048149MünsterGermany
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195
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Rosso C, Filippini G, Prato M. Use of Nitrogen-Doped Carbon Nanodots for the Photocatalytic Fluoroalkylation of Organic Compounds. Chemistry 2019; 25:16032-16036. [PMID: 31529711 DOI: 10.1002/chem.201903433] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2019] [Revised: 09/16/2019] [Indexed: 01/24/2023]
Abstract
The use of amine-rich N-doped carbon nanodots (NCNDs) for the photochemical radical perfluoroalkylation of organic compounds is reported. This operationally simple approach occurs under mild conditions producing valuable new C-C bonds. The chemistry is driven by the ability of NCNDs to directly reach an electronically excited state upon light absorption, thereby successively triggering the formation of reactive radical species from simple perfluoroalkyl iodides. Preliminary mechanistic studies are also reported.
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Affiliation(s)
- Cristian Rosso
- CENMAT, Center of Excellence for Nanostructured Materials, Department of Chemical and Pharmaceutical Sciences, INSTM UdR, University of Trieste, Via Licio Giorgieri 1, Trieste, 34127, Italy
| | - Giacomo Filippini
- CENMAT, Center of Excellence for Nanostructured Materials, Department of Chemical and Pharmaceutical Sciences, INSTM UdR, University of Trieste, Via Licio Giorgieri 1, Trieste, 34127, Italy
| | - Maurizio Prato
- CENMAT, Center of Excellence for Nanostructured Materials, Department of Chemical and Pharmaceutical Sciences, INSTM UdR, University of Trieste, Via Licio Giorgieri 1, Trieste, 34127, Italy.,Carbon Nanobiotechnology Laboratory, CIC BiomaGUNE, Paseo de Miramón 182, 20009, Donostia-San Sebastian, Spain.,Basque Fdn Sci, Ikerbasque, Bilbao, 48013, Spain
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196
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Affiliation(s)
- Thomas H. Rehm
- Division Energy & Chemical Technology / Flow Chemistry GroupFraunhofer Institute for Microengineering and Microsystems IMM Carl-Zeiss-Straße 18–20 55129 Mainz Germany
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197
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Abstract
AbstractWithin the last decade the combination of photoredox catalysis and other catalytic modes of activation has become a powerful tool for organic synthesis to enable transformations that are not possible using single catalyst systems and hence are complementary to traditional methodology. Especially reactions proceeding via synergistic catalysis where co-catalyst and photocatalyst simultaneously and separately activate different reaction partners greatly benefit from the special properties of molecules and transition metal complexes in their excited state being oxidizing and reducing in nature at the same time. Apart from allowing for the generation of radical (open-shell) reactive intermediates by SET under mild conditions from bench-stable, abundant precursors, the photocatalyst often acts to interweave the distinct catalytic cycles by interaction at multiple points of the reaction mechanism to provide overall redox-neutral processes by shuttling electrons within in this complex network of elementary reaction steps. Synergistic strategies moreover may allow to performing such reactions with enantioselectivity, while mostly the selectivity is achieved by the chiral co-catalyst. The merger of photocatalysis has been achieved with a broad range of alternative modes of catalysis including organocatalysis, Brønstedt and Lewis acid and base catalysis, enzyme catalysis as well as in the context of cross-coupling transition metal catalysis overcoming challenging steps in this methodology and therefore has contributed to considerably expand the repertoire of suitable coupling partners. While only selected examples will be discussed, this chapter will highlight various dual catalytic platforms focusing on the photocatalytically generated intermediates, but also illustrating the diverse roles of photocatalysts in the context of such synergistic multicatalysis reactions.
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Affiliation(s)
- Kirsten Zeitler
- Fakultät für Chemie und Mineralogie, Institut für Organische Chemie, Universität Leipzig, Johannisallee 29, D-04107, Leipzig04103, Germany
| | - Matthias Neumann
- Fakultät für Chemie und Pharmazie, Institut für Organische Chemie, Universität Regensburg, Regensburg, Bayern, Germany
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198
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Reid J, Proctor RSJ, Sigman MS, Phipps RJ. Predictive Multivariate Linear Regression Analysis Guides Successful Catalytic Enantioselective Minisci Reactions of Diazines. J Am Chem Soc 2019; 141:19178-19185. [PMID: 31710210 PMCID: PMC6900758 DOI: 10.1021/jacs.9b11658] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Indexed: 01/01/2023]
Abstract
The Minisci reaction is one of the most direct and versatile methods for forging new carbon-carbon bonds onto basic heteroarenes: a broad subset of compounds ubiquitous in medicinal chemistry. While many Minisci-type reactions result in new stereocenters, control of the absolute stereochemistry has proved challenging. An asymmetric variant was recently realized using chiral phosphoric acid catalysis, although in that study the substrates were limited to quinolines and pyridines. Mechanistic uncertainties and nonobvious enantioselectivity trends made the task of extending the reaction to important new substrate classes challenging and time-intensive. Herein, we describe an approach to address this problem through rigorous analysis of the reaction landscape guided by a carefully designed reaction data set and facilitated through multivariate linear regression (MLR) analysis. These techniques permitted the development of mechanistically informative correlations providing the basis to transfer enantioselectivity outcomes to new reaction components, ultimately predicting pyrimidines to be particularly amenable to the protocol. The predictions of enantioselectivity outcomes for these valuable, pharmaceutically relevant motifs were remarkably accurate in most cases and resulted in a comprehensive exploration of scope, significantly expanding the utility and versatility of this methodology. This successful outcome is a powerful demonstration of the benefits of utilizing MLR analysis as a predictive platform for effective and efficient reaction scope exploration across substrate classes.
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Affiliation(s)
- Jolene
P. Reid
- Department
of Chemistry, University of Utah, 315 South 1400 East, Salt Lake City, Utah 84112, United States
| | - Rupert S. J. Proctor
- Department
of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, United
Kingdom
| | - Matthew S. Sigman
- Department
of Chemistry, University of Utah, 315 South 1400 East, Salt Lake City, Utah 84112, United States
| | - Robert J. Phipps
- Department
of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, United
Kingdom
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199
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Affiliation(s)
- Tehshik P. Yoon
- Department of ChemistryUniversity of Wisconsin–Madison 1101 University Avenue Madison WI 53706 USA
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200
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Steinlandt PS, Zuo W, Harms K, Meggers E. Bis-Cyclometalated Indazole Chiral-at-Rhodium Catalyst for Asymmetric Photoredox Cyanoalkylations. Chemistry 2019; 25:15333-15340. [PMID: 31541505 PMCID: PMC6916287 DOI: 10.1002/chem.201903369] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Revised: 09/02/2019] [Indexed: 01/23/2023]
Abstract
A new class of bis‐cyclometalated rhodium(III) catalysts containing two inert cyclometalated 6‐tert‐butyl‐2‐phenyl‐2H‐indazole ligands and two labile acetonitriles is introduced. Single enantiomers (>99 % ee) were obtained through a chiral‐auxiliary‐mediated approach using a monofluorinated salicyloxazoline. The new chiral‐at‐metal complex is capable of catalyzing the visible‐light‐induced enantioselective α‐cyanoalkylation of 2‐acyl imidazoles in which it serves a dual function as the chiral Lewis acid catalyst for the asymmetric radical chemistry and at the same time as the photoredox catalyst for the visible‐light‐induced redox chemistry (up to 80 % yield, 4:1 d.r., and 95 % ee, 12 examples).
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Affiliation(s)
- Philipp S Steinlandt
- Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Strasse 4, 35043, Marburg, Germany
| | - Wei Zuo
- Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Strasse 4, 35043, Marburg, Germany
| | - Klaus Harms
- Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Strasse 4, 35043, Marburg, Germany
| | - Eric Meggers
- Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Strasse 4, 35043, Marburg, Germany
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