1
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Huang H, Jiang Y, Yuan W, Lin YM. Modular Assembly of Acridines by Integrating Photo-Excitation of o-Alkyl Nitroarenes with Copper-Promoted Cascade Annulation. Angew Chem Int Ed Engl 2024; 63:e202409653. [PMID: 39039028 DOI: 10.1002/anie.202409653] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2024] [Revised: 07/11/2024] [Accepted: 07/22/2024] [Indexed: 07/24/2024]
Abstract
Acridine frameworks stand as pivotal architectural elements in pharmaceuticals and photocatalytic applications, owing to their chemical adaptability, biological activity, and unique excited-state dynamics. Conventional synthetic routes often entail specialized starting materials, anaerobic or moisture-free conditions, and elaborate multi-stage manipulations for incorporating diverse functionalities. Herein, we present a convergent approach integrating photo-excitation of readily available ortho-alkyl nitroarenes with copper-promoted cascade annulation. This innovative system enables an aerobic, one-pot reaction of o-alkyl nitroarenes with arylboronic acids, thereby streamlining the modular construction of a wide array of acridine derivatives with various functional groups. This encompasses symmetrical, unsymmetrical and polysubstituted varieties, some of which are otherwise exceptionally difficult to synthesize. Furthermore, it significantly improves the production of structurally varied acridinium salts, featuring enhanced photophysical properties, high excited state potentials (E*red=2.08-3.15 V), and exhibiting superior performance in intricate photoredox transformations.
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Affiliation(s)
- Haichao Huang
- College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Yifan Jiang
- College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Wei Yuan
- Department of Pharmacy, Xiamen Medical College, Xiamen, 361023, China
| | - Yu-Mei Lin
- College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
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2
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Kanti Bera S, Porcheddu A. Pioneering Metal-Free Late-Stage C-H Functionalization Using Acridinium Salt Photocatalysis. Chemistry 2024:e202402809. [PMID: 39136621 DOI: 10.1002/chem.202402809] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2024] [Accepted: 08/13/2024] [Indexed: 10/23/2024]
Abstract
Using organic dyes as photocatalysts is an innovative approach to photocatalytic organic transformations. These dyes offer advantages such as widespread availability, adaptable absorption properties, and diverse chemical structures. Recent progress has led to the development of organic photocatalysts that can utilize visible light to modify chemically inert C-H bonds. These catalysts are sustainable, selective, and versatile, enabling mild reactions, late-stage functionalization, and various transformations in line with green chemistry principles. As catalysts in photoredox chemistry, they contribute to the development of efficient and environmentally friendly synthetic pathways. Acridinium-based organic photocatalysts have proved valuable in late-stage C-H functionalization, enabling transformative reactions under mild conditions. This review emphasizes their innovative features, such as organic frameworks, efficient light absorption properties, and their applications in modifying complex molecules. It provides an overview of recent advancements in the use of acridinium-based organic photocatalysts for late-stage C-H bond functionalization without the need for transition metals, showcasing their potential to expedite the development of new molecules and igniting excitement about the prospects of this research in the field.
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Affiliation(s)
- Shyamal Kanti Bera
- Università degli Studi di Cagliari, Dipartimento di Scienze Chimiche e Geologiche, Cittadella Universitaria, 09042, Cagliari, Italy
| | - Andrea Porcheddu
- Università degli Studi di Cagliari, Dipartimento di Scienze Chimiche e Geologiche, Cittadella Universitaria, 09042, Cagliari, Italy
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3
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Roy M, Sardar B, Mallick I, Srimani D. Generation of alkyl and acyl radicals by visible-light photoredox catalysis: direct activation of C-O bonds in organic transformations. Beilstein J Org Chem 2024; 20:1348-1375. [PMID: 38887583 PMCID: PMC11181251 DOI: 10.3762/bjoc.20.119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2024] [Accepted: 05/27/2024] [Indexed: 06/20/2024] Open
Abstract
Alkyl and acyl radicals play a critical role in the advancement of chemical synthesis. The generation of acyl and alkyl radicals by activation of C-O bonds using visible-light photoredox catalysis offers a mild and environmentally benign approach to useful chemical transformations. Alcohols, carboxylic acids, anhydrides, xanthates, oxalates, N-phthalimides, and thiocarbonates are some examples of alkyl and acyl precursors that can produce reactive radicals by homolysis of the C-O bond. These radicals can then go through a variety of transformations that are beneficial for the construction of synthetic materials that are otherwise difficult to access. This study summarizes current developments in the use of organic photocatalysts, transition-metal photoredox catalysts, and metallaphotocatalysts to produce acyl and alkyl radicals driven by visible light.
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Affiliation(s)
- Mithu Roy
- Department of Chemistry, Indian Institute of Technology-Guwahati, Kamrup, Assam 781039, India
| | - Bitan Sardar
- Department of Chemistry, Indian Institute of Technology-Guwahati, Kamrup, Assam 781039, India
| | - Itu Mallick
- Department of Chemistry, Indian Institute of Technology-Guwahati, Kamrup, Assam 781039, India
| | - Dipankar Srimani
- Department of Chemistry, Indian Institute of Technology-Guwahati, Kamrup, Assam 781039, India
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4
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Wang S, Zheng N, Deji C, Hu Q, Wu X, Zhan R, Huang H, Zhang Y. Visible-Light-Promoted [4π + 2σ] Annulation of Dienes and Alkylamines via Dual Inert C(sp 3)-H Bond Activation. Org Lett 2024. [PMID: 38781570 DOI: 10.1021/acs.orglett.4c01470] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/25/2024]
Abstract
Herein, visible-light-promoted [4π + 2σ] annulation of dienes and alkylamines was achieved via dual C(sp3)-H bond functionalization of alkylamines. The elusive enamine precursors are generated under mild conditions by photoredox catalysis, efficiently annulated by the diene, and simultaneously functionalized with two aliphatic C(sp3)-H bonds, resulting in the productive synthesis of new aromatic rings. The aromatic ring construction provides direct access to 2-hydroxybenzophenone derivatives in high yields (up to 90%). This [4π + 2σ] annulation reaction demonstrates mild reaction conditions, high reaction efficiency, and broad functional group tolerance, and this synthetic protocol has been made available for the late-stage transformation of natural products and commercial drugs.
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Affiliation(s)
- Shuzhong Wang
- Key Laboratory of Chinese Medicinal Resource from Lingnan, Ministry of Education, School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510006, People's Republic of China
| | - Nuowen Zheng
- Key Laboratory of Chinese Medicinal Resource from Lingnan, Ministry of Education, School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510006, People's Republic of China
| | - Cuo Deji
- Key Laboratory of Chinese Medicinal Resource from Lingnan, Ministry of Education, School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510006, People's Republic of China
| | - Qingzhong Hu
- Key Laboratory of Chinese Medicinal Resource from Lingnan, Ministry of Education, School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510006, People's Republic of China
| | - Xinxin Wu
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, 199 Ren-Ai Road, Suzhou, Jiangsu 215123, China
| | - Ruoting Zhan
- Key Laboratory of Chinese Medicinal Resource from Lingnan, Ministry of Education, School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510006, People's Republic of China
| | - Huicai Huang
- Key Laboratory of Chinese Medicinal Resource from Lingnan, Ministry of Education, School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510006, People's Republic of China
| | - Yue Zhang
- Key Laboratory of Chinese Medicinal Resource from Lingnan, Ministry of Education, School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510006, People's Republic of China
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5
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Huang J, Li X, Wei Y, Lei Z, Xu L. Organoboron/iodide-catalyzed photoredox N-functionalization of NH-sulfoximines/sulfonimidamides. Chem Commun (Camb) 2023; 59:13643-13646. [PMID: 37905454 DOI: 10.1039/d3cc04351g] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2023]
Abstract
An aminoquinolate diarylboron (AQDAB) and tetrabutylammonium iodide (TBAI) co-catalyzed photoredox process for N-functionalization of NH-sulfoximines/sulfonimidamides has been successfully developed. This protocol can afford the corresponding N-sulfenylated and N-phosphonylated products in good to excellent yields under conditions without metallic (photo)catalysts, external oxidants, or acidic/basic additives. A wide range of functional groups are tolerated, and the N-phosphonylated products of NH-sulfonimidamides have been reported for the first time.
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Affiliation(s)
- Jiawei Huang
- School of Chemistry and Chemical Engineering/State Key Laboratory Incubation Base for Green Processing of Chemical Engineering, Shihezi University, Shihezi, China.
| | - Xiaoman Li
- School of Chemistry and Chemical Engineering/State Key Laboratory Incubation Base for Green Processing of Chemical Engineering, Shihezi University, Shihezi, China.
| | - Yu Wei
- School of Chemistry and Chemical Engineering/State Key Laboratory Incubation Base for Green Processing of Chemical Engineering, Shihezi University, Shihezi, China.
| | - Zhigang Lei
- School of Chemistry and Chemical Engineering/State Key Laboratory Incubation Base for Green Processing of Chemical Engineering, Shihezi University, Shihezi, China.
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Box 266, Beijing 100029, China.
| | - Liang Xu
- School of Chemistry and Chemical Engineering/State Key Laboratory Incubation Base for Green Processing of Chemical Engineering, Shihezi University, Shihezi, China.
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6
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Li H, Li C, Liu W, Yao Y, Li Y, Zhang B, Qiu C. Photo-Induced C 1 Substitution Using Methanol as a C 1 Source. CHEMSUSCHEM 2023; 16:e202300377. [PMID: 37140478 DOI: 10.1002/cssc.202300377] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Revised: 05/04/2023] [Accepted: 05/04/2023] [Indexed: 05/05/2023]
Abstract
The development of sustainable and efficient C1 substitution methods is of central interest for organic synthesis and pharmaceuticals production, the methylation motifs bound to a carbon, nitrogen, or oxygen atom widely exist in natural products and top-selling drugs. In the past decades, a number of methods involving green and inexpensive methanol have already been disclosed to replace industrial hazardous and waste-generating C1 source. Among the various efforts, photochemical strategy is considered as a "renewable" alternative that shows great potential to selectively activate methanol to achieve a series of C1 substitutions at mild conditions, typically C/N-methylation, methoxylation, hydroxymethylation, and formylation. Herein the recent advances in selective transformation of methanol to various C1 functional groups via well-designed photochemical systems involving different types of catalysts or not is systematically reviewed. Both the mechanism and corresponding photocatalytic system were discussed and classified on specific methanol activation models. Finally, the major challenges and perspectives are proposed.
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Affiliation(s)
- Hongmei Li
- College of Mechanical Engineering, College of Food and Bioengineering, Chengdu University, Chengdu, 610106, P.R. China
| | - Chao Li
- College of Mechanical Engineering, College of Food and Bioengineering, Chengdu University, Chengdu, 610106, P.R. China
- ZJU-Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou, 311215, P.R. China
| | - Wei Liu
- International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry of Education, Institute of Microscale Optoelectronics, Shenzhen University, Shenzhen, 518060, P.R. China
| | - Yanling Yao
- School of Chemistry and Materials Engineering, Huizhou University, Huizhou, 516007, P.R. China
| | - Yuanhua Li
- School of Chemistry and Materials Engineering, Huizhou University, Huizhou, 516007, P.R. China
| | - Bing Zhang
- ZJU-Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou, 311215, P.R. China
- State Key Laboratory of Chemical Engineering, Institute of Pharmaceutical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310027, P.R. China
| | - Chuntian Qiu
- ZJU-Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou, 311215, P.R. China
- International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry of Education, Institute of Microscale Optoelectronics, Shenzhen University, Shenzhen, 518060, P.R. China
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7
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Du YD, Wang S, Du HW, Chang XY, Chen XY, Li YL, Shu W. Organophotocatalysed synthesis of 2-piperidinones in one step via [1 + 2 + 3] strategy. Nat Commun 2023; 14:5339. [PMID: 37660185 PMCID: PMC10475035 DOI: 10.1038/s41467-023-40197-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2023] [Accepted: 07/13/2023] [Indexed: 09/04/2023] Open
Abstract
Six-membered N-containing heterocycles, such as 2-piperidinone derivatives, with diverse substitution patterns are widespread in natural products, drug molecules and serve as key precursors for piperidines. Thus, the development of stereoselective synthesis of multi-substituted 2-piperidinones are attractive. However, existing methods heavily rely on modification of pre-synthesized backbones which require tedious multi-step procedure and suffer from limited substitution patterns. Herein, an organophotocatalysed [1 + 2 + 3] strategy was developed to enable the one-step access to diverse substituted 2-piperidinones from easily available inorganic ammonium salts, alkenes, and unsaturated carbonyl compounds. This mild protocol exhibits exclusive chemoselectivity over two alkenes, tolerating both terminal and internal alkenes with a wide range of functional groups.
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Affiliation(s)
- Yi-Dan Du
- Shenzhen Grubbs Institute and Department of Chemistry, Southern University of Science and Technology, Shenzhen, 518055, Guangdong, P. R. China
| | - Shan Wang
- Shenzhen Grubbs Institute and Department of Chemistry, Southern University of Science and Technology, Shenzhen, 518055, Guangdong, P. R. China
- State Key Laboratory of Elemento-Organic Chemistry, Nankai University, 300071, Tianjin, P. R. China
| | - Hai-Wu Du
- Shenzhen Grubbs Institute and Department of Chemistry, Southern University of Science and Technology, Shenzhen, 518055, Guangdong, P. R. China
| | - Xiao-Yong Chang
- Shenzhen Grubbs Institute and Department of Chemistry, Southern University of Science and Technology, Shenzhen, 518055, Guangdong, P. R. China
| | - Xiao-Yi Chen
- Shenzhen Grubbs Institute and Department of Chemistry, Southern University of Science and Technology, Shenzhen, 518055, Guangdong, P. R. China
| | - Yu-Long Li
- College of Chemistry and Environmental Engineering, Sichuan University of Science and Engineering, 643000, Zigong, P. R. China
| | - Wei Shu
- Shenzhen Grubbs Institute and Department of Chemistry, Southern University of Science and Technology, Shenzhen, 518055, Guangdong, P. R. China.
- State Key Laboratory of Elemento-Organic Chemistry, Nankai University, 300071, Tianjin, P. R. China.
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8
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Lu YC, West JG. Chemoselective Decarboxylative Protonation Enabled by Cooperative Earth-Abundant Element Catalysis. Angew Chem Int Ed Engl 2023; 62:e202213055. [PMID: 36350328 PMCID: PMC9839625 DOI: 10.1002/anie.202213055] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2022] [Revised: 11/08/2022] [Accepted: 11/09/2022] [Indexed: 11/11/2022]
Abstract
Decarboxylative protonation is a general deletion tactic to replace polar carboxylic acid groups with hydrogen or its isotope. Current methods rely on the pre-activation of acids, non-sustainable hydrogen sources, and/or expensive/highly oxidizing photocatalysts, presenting challenges to their wide adoption. Here we show that a cooperative iron/thiol catalyst system can readily achieve this transformation, hydrodecarboxylating a wide range of activated and unactivated carboxylic acids and overcoming scope limitations in previous direct methods. The reaction is readily scaled in batch configuration and can be directly performed in deuterated solvent to afford high yields of d-incorporated products with excellent isotope incorporation efficiency; characteristics not attainable in previous photocatalyzed approaches. Preliminary mechanistic studies indicate a radical mechanism and kinetic results of unactivated acids (KIE=1) are consistent with a light-limited reaction.
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Affiliation(s)
- Yen-Chu Lu
- Department of Chemistry, Rice University, 6100 Main St, Houston, TX 77005, USA
| | - Julian G West
- Department of Chemistry, Rice University, 6100 Main St, Houston, TX 77005, USA
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9
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Zachilas I, Kidonakis M, Karapanou MI, Stratakis M. Substitution-Dependent Ring-Opening Hydrosilylation or Dehydrogenative Hydrosilylation of Cyclopropyl Aldehydes and Ketones Catalyzed by Au Nanoparticles. J Org Chem 2022; 87:15914-15924. [DOI: 10.1021/acs.joc.2c02024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Affiliation(s)
- Ioannis Zachilas
- Department of Chemistry, University of Crete,
Voutes, Heraklion 71003, Greece
| | - Marios Kidonakis
- Department of Chemistry, University of Crete,
Voutes, Heraklion 71003, Greece
| | | | - Manolis Stratakis
- Department of Chemistry, University of Crete,
Voutes, Heraklion 71003, Greece
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10
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Li Q, Gu X, Wei Y, Shi M. Visible-light-induced indole synthesis via intramolecular C-N bond formation: desulfonylative C(sp 2)-H functionalization. Chem Sci 2022; 13:11623-11632. [PMID: 36320397 PMCID: PMC9555724 DOI: 10.1039/d2sc02822k] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Accepted: 09/15/2022] [Indexed: 08/09/2024] Open
Abstract
Despite significant advances made on the synthesis of indole derivatives through photochemical strategies during the past several years, the requirement of equivalent amounts of oxidants, bases or other additional additives has limited their practical applications in the synthesis of natural products and pharmaceuticals as environment-friendly processes. Herein, we report LED visible-light-induced redox neutral desulfonylative C(sp2)-H functionalization for the synthesis of N-substituted indoles with a broad scope through γ-fragmentation under mild conditions in the absence of any additional additive. The reaction mechanism paradigm has been investigated on the basis of deuterium labeling experiments, kinetic analysis, Hammett plotting analysis and DFT calculations.
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Affiliation(s)
- Quanzhe Li
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Science, Chinese Academy of Sciences 345 Lingling Road Shanghai 200032 China
| | - Xintao Gu
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Science, Chinese Academy of Sciences 345 Lingling Road Shanghai 200032 China
| | - Yin Wei
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Science, Chinese Academy of Sciences 345 Lingling Road Shanghai 200032 China
| | - Min Shi
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Science, Chinese Academy of Sciences 345 Lingling Road Shanghai 200032 China
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry & Molecular Engineering, East China University of Science and Technology 130 Meilong Road Shanghai 200237 China
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11
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Luo MJ, Xiao Q, Li JH. Electro-/photocatalytic alkene-derived radical cation chemistry: recent advances in synthetic applications. Chem Soc Rev 2022; 51:7206-7237. [PMID: 35880555 DOI: 10.1039/d2cs00013j] [Citation(s) in RCA: 35] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Alkene-derived radical cations are versatile reactive intermediates and have been widely applied in the construction of complex functionalized molecules and cyclic systems for chemical synthesis. Therefore, the synthetic application of these alkene-derived radical cations represents a powerful and green tool that can be used to achieve the functionalization of alkenes partially because the necessity of stoichiometric external chemical oxidants and/or hazardous reaction conditions is eliminated. This review summarizes the recent advances in the synthetic applications of the electro-/photochemical alkene-derived radical cations, emphasizing the key single-electron oxidation steps of the alkenes, the scope and limitations of the substrates, and the related reaction mechanisms. Using electrocatalysis and/or photocatalysis, single electron transfer (SET) oxidation of the CC bonds in the alkenes occurs, generating the alkene-derived radical cations, which sequentially enables the functionalization of translocated radical cations to occur in two ways: the first involves direct reaction with a nucleophile/radical or two molecules of nucleophiles to realize hydrofunctionalization, difunctionalization and cyclization; and the second involves the transformation of the alkene-derived radical cations into carbon-centered radicals using a base followed by radical coupling or oxidative nucleophilic coupling.
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Affiliation(s)
- Mu-Jia Luo
- Key Laboratory of Organic Chemistry of Jiangxi Province, Jiangxi Science & Technology Normal University, Nanchang, 330013, China.
| | - Qiang Xiao
- Key Laboratory of Organic Chemistry of Jiangxi Province, Jiangxi Science & Technology Normal University, Nanchang, 330013, China.
| | - Jin-Heng Li
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang 330063, China. .,State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China.,School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 475004, China
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12
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Jang YJ, An H, Choi S, Hong J, Lee SH, Ahn KH, You Y, Kang EJ. Green-Light-Driven Fe(III)(btz) 3 Photocatalysis in the Radical Cationic [4+2] Cycloaddition Reaction. Org Lett 2022; 24:4479-4484. [PMID: 35687841 DOI: 10.1021/acs.orglett.2c01779] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Green-light-driven FeIII(btz)3 photocatalysis for the radical cationic [4+2] cycloaddition of terminal styrenes and nucleophilic dienes has been investigated. The Fe-MIC (mesoionic carbene) complex forms a ligand-to-metal charge-transfer transition state with relatively high excited-state reduction potentials that can selectively oxidize terminal styrene derivatives. Unique multisubstituted cyclohexenes and structurally complex biorelevant cyclohexenes were constructed, highlighting the usefulness of this mild and practical first-row transition metal complex system.
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Affiliation(s)
- Yu Jeong Jang
- Department of Applied Chemistry, Kyung Hee University, Yongin 17104, Korea
| | - Hyeju An
- Department of Applied Chemistry, Kyung Hee University, Yongin 17104, Korea
| | - Seunghee Choi
- Division of Chemical Engineering and Materials Science and Graduate Program in System Health Science and Engineering, Ewha Womans University, Seoul 03760, Korea
| | - Jayeon Hong
- Division of Chemical Engineering and Materials Science and Graduate Program in System Health Science and Engineering, Ewha Womans University, Seoul 03760, Korea
| | - Seung Hyun Lee
- Department of Applied Chemistry, Kyung Hee University, Yongin 17104, Korea
| | - Kwang-Hyun Ahn
- Department of Applied Chemistry, Kyung Hee University, Yongin 17104, Korea
| | - Youngmin You
- Division of Chemical Engineering and Materials Science and Graduate Program in System Health Science and Engineering, Ewha Womans University, Seoul 03760, Korea
| | - Eun Joo Kang
- Department of Applied Chemistry, Kyung Hee University, Yongin 17104, Korea
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13
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Gan X, Wu S, Geng F, Dong J, Zhou Y. Photocatalytic C–H alkylation of coumarins mediated by triphenylphosphine and sodium iodide. Tetrahedron Lett 2022. [DOI: 10.1016/j.tetlet.2022.153720] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
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14
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Tlili A, Lakhdar S. Acridinium Salts and Cyanoarenes as Powerful Photocatalysts: Opportunities in Organic Synthesis. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202102262] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Anis Tlili
- Institute of Chemistry and Biochemistry (ICBMS-UMR CNRS 5246) Univ Lyon, Université Lyon 1 CNRS CPE-Lyon INSA 43 Bd du 11 Novembre 1918 69622 Villeurbanne France
| | - Sami Lakhdar
- CNRS/Université Toulouse III—Paul Sabatier Laboratoire Hétérochimie Fondamentale et Appliquée LHFA UMR 5069 118 Route de Narbonne 31062 Toulouse Cedex 09 France
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15
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Tlili A, Lakhdar S. Acridinium Salts and Cyanoarenes as Powerful Photocatalysts: Opportunities in Organic Synthesis. Angew Chem Int Ed Engl 2021; 60:19526-19549. [PMID: 33881207 DOI: 10.1002/anie.202102262] [Citation(s) in RCA: 83] [Impact Index Per Article: 27.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2021] [Revised: 04/16/2021] [Indexed: 01/18/2023]
Abstract
The use of organic photocatalysts has revolutionized the field of photoredox catalysis, as it allows access to reactivities that were traditionally restricted to transition-metal photocatalysts. This Minireview reports recent developments in the use of acridinium ions and cyanoarene derivatives in organic synthesis. The activation of inert chemical bonds as well as the late-stage functionalization of biorelevant molecules are discussed, with a special focus on their mechanistic aspects.
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Affiliation(s)
- Anis Tlili
- Institute of Chemistry and Biochemistry (ICBMS-UMR CNRS 5246), Univ Lyon, Université Lyon 1, CNRS, CPE-Lyon, INSA, 43 Bd du 11 Novembre 1918, 69622, Villeurbanne, France
| | - Sami Lakhdar
- CNRS/Université Toulouse III-Paul Sabatier, Laboratoire Hétérochimie Fondamentale et Appliquée, LHFA UMR 5069, 118 Route de Narbonne, 31062, Toulouse Cedex 09, France
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16
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Affiliation(s)
- Sebastián Martínez
- University of Strasbourg, CNRS, ISIS UMR 7006, 8 allée Gaspard Monge, 67000 Strasbourg, France
| | - Lukas Veth
- University of Strasbourg, CNRS, ISIS UMR 7006, 8 allée Gaspard Monge, 67000 Strasbourg, France
| | - Bruno Lainer
- University of Strasbourg, CNRS, ISIS UMR 7006, 8 allée Gaspard Monge, 67000 Strasbourg, France
| | - Paweł Dydio
- University of Strasbourg, CNRS, ISIS UMR 7006, 8 allée Gaspard Monge, 67000 Strasbourg, France
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17
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Shi K, Zhu H, Ren F, Liu S, Song Y, Li W, Zou L. Copper‐catalyzed [3+2+1] Annulation of Anthranils with Phenylacetaldehydes: Synthesis of 8‐Acylquinolines. European J Org Chem 2021. [DOI: 10.1002/ejoc.202001570] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Kai Shi
- The Key Laboratory of Carbohydrate Chemistry and Biotechnology Ministry of Education School of Pharmaceutical Sciences Jiangnan University Lihu Avenue 1800 Wuxi 214122 P.R. China
| | - Hao Zhu
- The Key Laboratory of Carbohydrate Chemistry and Biotechnology Ministry of Education School of Pharmaceutical Sciences Jiangnan University Lihu Avenue 1800 Wuxi 214122 P.R. China
| | - Fei Ren
- The Key Laboratory of Carbohydrate Chemistry and Biotechnology Ministry of Education School of Pharmaceutical Sciences Jiangnan University Lihu Avenue 1800 Wuxi 214122 P.R. China
| | - Shuang Liu
- The Key Laboratory of Carbohydrate Chemistry and Biotechnology Ministry of Education School of Pharmaceutical Sciences Jiangnan University Lihu Avenue 1800 Wuxi 214122 P.R. China
| | - Yingying Song
- The Key Laboratory of Carbohydrate Chemistry and Biotechnology Ministry of Education School of Pharmaceutical Sciences Jiangnan University Lihu Avenue 1800 Wuxi 214122 P.R. China
| | - Wei Li
- School of Biology and Chemistry, Key Laboratory of Chemical Synthesis and Environmental Pollution Control-Remediation Technology of Guizhou Province Xingyi Normal University for Nationalities Xingyi 562400 China
| | - Liang‐Hua Zou
- The Key Laboratory of Carbohydrate Chemistry and Biotechnology Ministry of Education School of Pharmaceutical Sciences Jiangnan University Lihu Avenue 1800 Wuxi 214122 P.R. China
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18
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Cannalire R, Pelliccia S, Sancineto L, Novellino E, Tron GC, Giustiniano M. Visible light photocatalysis in the late-stage functionalization of pharmaceutically relevant compounds. Chem Soc Rev 2020; 50:766-897. [PMID: 33350402 DOI: 10.1039/d0cs00493f] [Citation(s) in RCA: 180] [Impact Index Per Article: 45.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The late stage functionalization (LSF) of complex biorelevant compounds is a powerful tool to speed up the identification of structure-activity relationships (SARs) and to optimize ADME profiles. To this end, visible-light photocatalysis offers unique opportunities to achieve smooth and clean functionalization of drugs by unlocking site-specific reactivities under generally mild reaction conditions. This review offers a critical assessment of current literature, pointing out the recent developments in the field while emphasizing the expected future progress and potential applications. Along with paragraphs discussing the visible-light photocatalytic synthetic protocols so far available for LSF of drugs and drug candidates, useful and readily accessible synoptic tables of such transformations, divided by functional groups, will be provided, thus enabling a useful, fast, and easy reference to them.
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Affiliation(s)
- Rolando Cannalire
- Department of Pharmacy, University of Naples Federico II, via D. Montesano 49, 80131, Napoli, Italy.
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19
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Yang G, Liu Y, Li K, Liu W, Yu B, Hu C. H3PMo12O40-catalyzed coupling of diarylmethanols with epoxides/diols/aldehydes toward polyaryl-substituted aldehydes. CHINESE CHEM LETT 2020. [DOI: 10.1016/j.cclet.2020.07.018] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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20
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Xiang JC, Wang Q, Zhu J. Radical-Cation Cascade to Aryltetralin Cyclic Ether Lignans Under Visible-Light Photoredox Catalysis. Angew Chem Int Ed Engl 2020; 59:21195-21202. [PMID: 32744786 DOI: 10.1002/anie.202007548] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Revised: 07/27/2020] [Indexed: 12/16/2022]
Abstract
The development of concise, sustainable, and cost-effective synthesis of aryltetralin lignans, bearing either a fused lactone or cyclic ether, is of significant medicinal importance. Reported is that in the presence of Fukuzumi's acridinium salt under blue LED irradiation, functionalized dicinnamyl ether derivatives are converted into aryltetralin cyclic ether lignans with concurrent generation of three stereocenters in good to high yields with up to 20:1 diastereoselectivity. Oxidation of an alkene to the radical cation is key to the success of this formal Diels-Alder reaction of electronically mismatched diene and dienophile. Applying this methodology, six natural products, aglacin B, aglacin C, sulabiroin A, sulabiroin B, gaultherin C, and isoshonanin, are synthesized in only two to three steps from readily available biomass-derived monolignols. A revised structure is proposed for gaultherin C.
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Affiliation(s)
- Jia-Chen Xiang
- Laboratory of Synthesis and Natural Products, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, EPFL-SB-ISIC-LSPN, BCH 5304, 1015, Lausanne, Switzerland
| | - Qian Wang
- Laboratory of Synthesis and Natural Products, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, EPFL-SB-ISIC-LSPN, BCH 5304, 1015, Lausanne, Switzerland
| | - Jieping Zhu
- Laboratory of Synthesis and Natural Products, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, EPFL-SB-ISIC-LSPN, BCH 5304, 1015, Lausanne, Switzerland
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21
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Xiang J, Wang Q, Zhu J. Radical‐Cation Cascade to Aryltetralin Cyclic Ether Lignans Under Visible‐Light Photoredox Catalysis. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202007548] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Jia‐Chen Xiang
- Laboratory of Synthesis and Natural Products Institute of Chemical Sciences and Engineering Ecole Polytechnique Fédérale de Lausanne EPFL-SB-ISIC-LSPN, BCH 5304 1015 Lausanne Switzerland
| | - Qian Wang
- Laboratory of Synthesis and Natural Products Institute of Chemical Sciences and Engineering Ecole Polytechnique Fédérale de Lausanne EPFL-SB-ISIC-LSPN, BCH 5304 1015 Lausanne Switzerland
| | - Jieping Zhu
- Laboratory of Synthesis and Natural Products Institute of Chemical Sciences and Engineering Ecole Polytechnique Fédérale de Lausanne EPFL-SB-ISIC-LSPN, BCH 5304 1015 Lausanne Switzerland
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22
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Wu J, Huang D, Zhang Y, Yang X. Aerobic C–H Functionalization Using Pyrenedione as the Photocatalyst. SYNTHESIS-STUTTGART 2020. [DOI: 10.1055/s-0040-1707135] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
We disclose a visible-light-promoted aerobic alkylation of activated C(sp3)–H bonds using pyrenedione (PYD) as the photocatalyst. Direct C–H bond alkylation of tetrahydrofuran with alkylidenemalononitriles is accomplished in over 90% yield in the presence of 5 mol% of PYD and 18 W blue LED light under ambient conditions. The substrate scope is extended to ethers, thioethers, and allylic C–H bonds in reactions with various electrophilic Michael acceptors. The catalytic turnover process is facilitated by oxygen. Our work represents the first example of using PYD as a photocatalyst to promote C(sp3)–H alkylation, revealing the unique character of PYD as a novel organophotocatalyst.
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Affiliation(s)
- Jie Wu
- Department of Chemistry, National University of Singapore
| | - Dejiang Huang
- Department of Food Science and Technology, National University of Singapore
| | - Yuannian Zhang
- Department of Food Science and Technology, National University of Singapore
| | - Xin Yang
- Department of Food Science and Technology, National University of Singapore
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23
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Wu F, Wang L, Ji Y, Zou G, Shen H, Nicewicz DA, Chen J, Huang Y. Direct Synthesis of Bicyclic Acetals via Visible Light Catalysis. iScience 2020; 23:101395. [PMID: 32759056 PMCID: PMC7404572 DOI: 10.1016/j.isci.2020.101395] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Revised: 06/26/2020] [Accepted: 07/17/2020] [Indexed: 11/28/2022] Open
Abstract
Polysubstituted bicyclic acetals are a class of privileged pharmacophores with a unique 3D structure and an adjacent pair of hydrogen bond acceptors. The key, fused acetal functionality is often assembled, via intramolecular cyclization, from linear substrates that are not readily available. Herein, we report a formal cycloaddition between cinnamyl alcohols and cyclic enol ethers under ambient photoredox catalysis conditions. Polysubstituted bicyclic acetals can be prepared in one step from readily available building blocks. Employment of sugar-derived enol ethers allows easy access to a library of scaffolds with intriguing conformation and medicinal chemistry potential. Synergistic catalysis of photocatalyst and HAT reagent 5/5, 5/6, 5/7, 6/6 bicyclic acetals and polysubstituted THF formed in one step High stability of bicyclic acetal in SIF and SGF
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Affiliation(s)
- Fengjin Wu
- State Key Laboratory of Chemical Oncogenomics, Key Laboratory of Chemical Genomics, Peking University, Shenzhen Graduate School, Shenzhen 518055, China
| | - Leifeng Wang
- State Key Laboratory of Chemical Oncogenomics, Key Laboratory of Chemical Genomics, Peking University, Shenzhen Graduate School, Shenzhen 518055, China; Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-3290, USA
| | - Ying Ji
- Roche R&D Center (China) Ltd, 720 Cai Lun Road, Building 5, Shanghai 201203, China
| | - Ge Zou
- Roche R&D Center (China) Ltd, 720 Cai Lun Road, Building 5, Shanghai 201203, China
| | - Hong Shen
- Roche R&D Center (China) Ltd, 720 Cai Lun Road, Building 5, Shanghai 201203, China
| | - David A Nicewicz
- State Key Laboratory of Chemical Oncogenomics, Key Laboratory of Chemical Genomics, Peking University, Shenzhen Graduate School, Shenzhen 518055, China; Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-3290, USA.
| | - Jiean Chen
- State Key Laboratory of Chemical Oncogenomics, Key Laboratory of Chemical Genomics, Peking University, Shenzhen Graduate School, Shenzhen 518055, China; Pingshan Translational Medicine Center, Shenzhen Bay Laboratory, Shenzhen 518055, China.
| | - Yong Huang
- State Key Laboratory of Chemical Oncogenomics, Key Laboratory of Chemical Genomics, Peking University, Shenzhen Graduate School, Shenzhen 518055, China; Pingshan Translational Medicine Center, Shenzhen Bay Laboratory, Shenzhen 518055, China.
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24
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Moon Y, Lee W, Hong S. Visible-Light-Enabled Ortho-Selective Aminopyridylation of Alkenes with N-Aminopyridinium Ylides. J Am Chem Soc 2020; 142:12420-12429. [DOI: 10.1021/jacs.0c05025] [Citation(s) in RCA: 48] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Yonghoon Moon
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Korea
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, Korea
| | - Wooseok Lee
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Korea
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, Korea
| | - Sungwoo Hong
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Korea
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, Korea
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25
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Ou W, Zou R, Han M, Yu L, Su C. Tailorable carbazolyl cyanobenzene-based photocatalysts for visible light-induced reduction of aryl halides. CHINESE CHEM LETT 2020. [DOI: 10.1016/j.cclet.2019.12.017] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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26
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He. Y, Tang Z, Hong G, Hu C, Zhou C, Wang L. Scandium(III) Trifluoromethanesulfonate Catalyzed Reactions of 9‐Aryl‐9‐fluorenols with 1,1‐Diarylethylenes. ChemistrySelect 2020. [DOI: 10.1002/slct.202000814] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Yuchen He.
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals East China University of Science and Technology 130 Meilong Road Shanghai 200237 P. R. China
| | - Zhicong Tang
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals East China University of Science and Technology 130 Meilong Road Shanghai 200237 P. R. China
| | - Gang Hong
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals East China University of Science and Technology 130 Meilong Road Shanghai 200237 P. R. China
| | - Chen Hu
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals East China University of Science and Technology 130 Meilong Road Shanghai 200237 P. R. China
| | - Chen Zhou
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals East China University of Science and Technology 130 Meilong Road Shanghai 200237 P. R. China
| | - Limin Wang
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals East China University of Science and Technology 130 Meilong Road Shanghai 200237 P. R. China
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27
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Uraguchi D, Ueoka F, Tanaka N, Kizu T, Takahashi W, Ooi T. A Structurally Robust Chiral Borate Ion: Molecular Design, Synthesis, and Asymmetric Catalysis. Angew Chem Int Ed Engl 2020; 59:11456-11461. [DOI: 10.1002/anie.202001637] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Revised: 03/12/2020] [Indexed: 02/02/2023]
Affiliation(s)
- Daisuke Uraguchi
- Department of Molecular and Macromolecular Chemistry Graduate School of Engineering Nagoya University Nagoya 464-8603 Japan
| | - Fumito Ueoka
- Department of Molecular and Macromolecular Chemistry Graduate School of Engineering Nagoya University Nagoya 464-8603 Japan
| | - Naoya Tanaka
- Department of Molecular and Macromolecular Chemistry Graduate School of Engineering Nagoya University Nagoya 464-8603 Japan
| | - Tomohito Kizu
- Department of Molecular and Macromolecular Chemistry Graduate School of Engineering Nagoya University Nagoya 464-8603 Japan
| | - Wakana Takahashi
- Department of Molecular and Macromolecular Chemistry Graduate School of Engineering Nagoya University Nagoya 464-8603 Japan
| | - Takashi Ooi
- Department of Molecular and Macromolecular Chemistry Graduate School of Engineering Nagoya University Nagoya 464-8603 Japan
- Institute of Transformative Bio-Molecules (WPI-ITbM) Nagoya University Nagoya 464-8601 Japan
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28
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Uraguchi D, Ueoka F, Tanaka N, Kizu T, Takahashi W, Ooi T. A Structurally Robust Chiral Borate Ion: Molecular Design, Synthesis, and Asymmetric Catalysis. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202001637] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Daisuke Uraguchi
- Department of Molecular and Macromolecular Chemistry Graduate School of Engineering Nagoya University Nagoya 464-8603 Japan
| | - Fumito Ueoka
- Department of Molecular and Macromolecular Chemistry Graduate School of Engineering Nagoya University Nagoya 464-8603 Japan
| | - Naoya Tanaka
- Department of Molecular and Macromolecular Chemistry Graduate School of Engineering Nagoya University Nagoya 464-8603 Japan
| | - Tomohito Kizu
- Department of Molecular and Macromolecular Chemistry Graduate School of Engineering Nagoya University Nagoya 464-8603 Japan
| | - Wakana Takahashi
- Department of Molecular and Macromolecular Chemistry Graduate School of Engineering Nagoya University Nagoya 464-8603 Japan
| | - Takashi Ooi
- Department of Molecular and Macromolecular Chemistry Graduate School of Engineering Nagoya University Nagoya 464-8603 Japan
- Institute of Transformative Bio-Molecules (WPI-ITbM) Nagoya University Nagoya 464-8601 Japan
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29
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Zilate B, Fischer C, Sparr C. Design and application of aminoacridinium organophotoredox catalysts. Chem Commun (Camb) 2020; 56:1767-1775. [PMID: 31998897 DOI: 10.1039/c9cc08524f] [Citation(s) in RCA: 59] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Recent developments in preparative photocatalysis have reshaped synthetic strategies and now represent an integral part of current organic chemistry. Due to their favourable electrochemical and photophysical properties, the nowadays most frequently used photocatalysts are based on precious Ru- and Ir-polypyridyl complexes. Apart from that, organic catalysts such as the acridinium salts are now commonly employed to complement transition metals to provide potentially sustainable strategies amenable to large-scale synthesis. In this feature article, the design, synthesis and application of aminoacridinium photoredox catalysts as well as their exceptionally broad range of redox properties are highlighted. Due to their modularity, this burgeoning class of organophotocatalysts is anticipated to contribute significantly to synthetic methodology development and the translation to a wide range of innovative implementations.
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Affiliation(s)
- Bouthayna Zilate
- Department of Chemistry, University of Basel, St. Johanns-Ring 19, CH-4056, Basel, Switzerland.
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30
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Breder A, Depken C. Lichtgetriebene Ein‐Elektronen‐Transferprozesse als Funktionsprinzip in der Schwefel‐ und Selen‐Multikatalyse. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201812486] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Alexander Breder
- Institut für Organische ChemieUniversität Regensburg Universitätsstrasse 31 93053 Regenburg Deutschland
- Institut für Organische und Biomolekulare ChemieUniversität Göttingen Tammannstrasse 2 37077 Göttingen Deutschland
| | - Christian Depken
- Institut für Organische und Biomolekulare ChemieUniversität Göttingen Tammannstrasse 2 37077 Göttingen Deutschland
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31
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Breder A, Depken C. Light‐Driven Single‐Electron Transfer Processes as an Enabling Principle in Sulfur and Selenium Multicatalysis. Angew Chem Int Ed Engl 2019; 58:17130-17147. [DOI: 10.1002/anie.201812486] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2018] [Revised: 12/17/2018] [Indexed: 11/08/2022]
Affiliation(s)
- Alexander Breder
- Institut für Organische ChemieUniversität Regensburg Universitätsstrasse 31 93053 Regenburg Deutschland
- Institut für Organische und Biomolekulare ChemieUniversität Göttingen Tammannstrasse 2 37077 Göttingen Deutschland
| | - Christian Depken
- Institut für Organische und Biomolekulare ChemieUniversität Göttingen Tammannstrasse 2 37077 Göttingen Deutschland
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32
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Krappitz T, Jovic K, Feist F, Frisch H, Rigoglioso VP, Blinco JP, Boydston AJ, Barner-Kowollik C. Hybrid Photo-induced Copolymerization of Ring-Strained and Vinyl Monomers Utilizing Metal-Free Ring-Opening Metathesis Polymerization Conditions. J Am Chem Soc 2019; 141:16605-16609. [PMID: 31592659 DOI: 10.1021/jacs.9b09025] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We introduce the hybrid copolymerization of two disparate monomer classes (vinyl monomers and ring-strained cyclic olefins) via living photopolymerization. The living character of the polymerization technique (metal-free photo-ROMP) is demonstrated by consecutive chain-extensions. Further, we propose a mechanism for the copolymerization and analyze the copolymer structure in detail by high-resolution mass spectrometry.
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Affiliation(s)
- Tim Krappitz
- School of Chemistry, Physics and Mechanical Engineering , Queensland University of Technology (QUT) , 2 George Street , Brisbane , QLD 4000 , Australia
| | - Kristina Jovic
- School of Chemistry, Physics and Mechanical Engineering , Queensland University of Technology (QUT) , 2 George Street , Brisbane , QLD 4000 , Australia
| | - Florian Feist
- School of Chemistry, Physics and Mechanical Engineering , Queensland University of Technology (QUT) , 2 George Street , Brisbane , QLD 4000 , Australia.,Max Planck Institute for Polymer Research , Ackermannweg 10 , 55128 Mainz , Germany
| | - Hendrik Frisch
- School of Chemistry, Physics and Mechanical Engineering , Queensland University of Technology (QUT) , 2 George Street , Brisbane , QLD 4000 , Australia
| | - Vincent P Rigoglioso
- Department of Chemistry , University of Wisconsin-Madison , 1101 University Avenue , Madison , Wisconsin 53706 , United States
| | - James P Blinco
- School of Chemistry, Physics and Mechanical Engineering , Queensland University of Technology (QUT) , 2 George Street , Brisbane , QLD 4000 , Australia
| | - Andrew J Boydston
- Department of Chemistry , University of Wisconsin-Madison , 1101 University Avenue , Madison , Wisconsin 53706 , United States
| | - Christopher Barner-Kowollik
- School of Chemistry, Physics and Mechanical Engineering , Queensland University of Technology (QUT) , 2 George Street , Brisbane , QLD 4000 , Australia.,Macromolecular Architectures, Institut für Technische Chemie und Polymerchemie , Karlsruhe Institute of Technology (KIT) , Engesserstraße 18 , 76131 Karlsruhe , Germany
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33
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Onuska NPR, Schutzbach-Horton ME, Rosario Collazo JL, Nicewicz DA. Anti-Markovnikov Hydroazidation of Activated Olefins via Organic Photoredox Catalysis. Synlett 2019; 31:55-59. [PMID: 34108817 PMCID: PMC8186491 DOI: 10.1055/s-0039-1690691] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Organic azides serve as synthetically useful surrogates for primary amines, a functional group which is ubiquitous in bioactive and medicinally relevant molecules. Historically, the formal hydroazidation of simple activated olefins and styrenes has proven difficult due to the inherent propensity of these compounds to oligomerize. Herein is disclosed a method for the anti-Markovnikov hydroazidation of activated olefins, catalyzed by an organic acridinium salt under irradiation from blue LEDs. This method is applicable to a variety of substituted and terminal styrenes and several vinyl ethers, yielding synthetically versatile hydroazidation products in moderate to excellent yield.
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Affiliation(s)
- Nicholas P R Onuska
- Department of Chemistry, The University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599-3290, USA
| | - Megan E Schutzbach-Horton
- Department of Chemistry, The University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599-3290, USA
| | - José L Rosario Collazo
- Department of Chemistry, The University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599-3290, USA
| | - David A Nicewicz
- Department of Chemistry, The University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599-3290, USA
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34
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Nguyen ST, Zhu Q, Knowles RR. PCET-Enabled Olefin Hydroamidation Reactions with N-Alkyl Amides. ACS Catal 2019; 9:4502-4507. [PMID: 32292642 DOI: 10.1021/acscatal.9b00966] [Citation(s) in RCA: 51] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Olefin aminations are important synthetic technologies for the construction of aliphatic C-N bonds. Here we report a catalytic protocol for olefin hydroamidation that proceeds through transient amidyl radical intermediates that are formed via proton-coupled electron transfer (PCET) activation of the strong N-H bonds in N-alkyl amides by an excited-state iridium photocatalyst and a dialkyl phosphate base. This method exhibits a broad substrate scope, high functional group tolerance, and amenability to use in cascade polycyclization reactions. The feasibility of this PCET protocol in enabling the intermolecular anti-Markovnikov hydroamidation reactions of unactivated olefins is also demonstrated.
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Affiliation(s)
- Suong T. Nguyen
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544, United States
| | - Qilei Zhu
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544, United States
| | - Robert R. Knowles
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544, United States
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35
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Ou W, Zhang G, Wu J, Su C. Photocatalytic Cascade Radical Cyclization Approach to Bioactive Indoline-Alkaloids over Donor–Acceptor Type Conjugated Microporous Polymer. ACS Catal 2019. [DOI: 10.1021/acscatal.9b00693] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Wei Ou
- SZU-NUS Collaborative Center and International Collaborative Laboratory of 2D Materials for Optoelectronic Science & Technology, Engineering Technology Research Center for 2D Materials Information Functional Devices and Systems of Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China
| | - Guoqiang Zhang
- SZU-NUS Collaborative Center and International Collaborative Laboratory of 2D Materials for Optoelectronic Science & Technology, Engineering Technology Research Center for 2D Materials Information Functional Devices and Systems of Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China
| | - Jie Wu
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore
| | - Chenliang Su
- SZU-NUS Collaborative Center and International Collaborative Laboratory of 2D Materials for Optoelectronic Science & Technology, Engineering Technology Research Center for 2D Materials Information Functional Devices and Systems of Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China
- Engineering Technology Research Center for 2D Material Information Function Devices and Systems of Guangdong Province, Shenzhen University, Shenzhen 518060, China
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36
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Markham JP, Wang B, Stevens ED, Burris SC, Deng Y. ortho
‐Alkylation of Pyridine
N
‐Oxides with Alkynes by Photocatalysis: Pyridine
N
‐Oxide as a Redox Auxiliary. Chemistry 2019; 25:6638-6644. [DOI: 10.1002/chem.201901065] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2019] [Indexed: 11/11/2022]
Affiliation(s)
- Jonathan P. Markham
- Chemistry DepartmentWestern Kentucky University 1906 College Heights Boulevard Bowling Green Kentucky 42101 USA
| | - Ban Wang
- Chemistry DepartmentWestern Kentucky University 1906 College Heights Boulevard Bowling Green Kentucky 42101 USA
| | - Edwin D. Stevens
- Chemistry DepartmentWestern Kentucky University 1906 College Heights Boulevard Bowling Green Kentucky 42101 USA
| | - Stuart C. Burris
- Chemistry DepartmentWestern Kentucky University 1906 College Heights Boulevard Bowling Green Kentucky 42101 USA
| | - Yongming Deng
- Chemistry DepartmentWestern Kentucky University 1906 College Heights Boulevard Bowling Green Kentucky 42101 USA
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37
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Gui J, Xie H, Jiang H, Zeng W. Visible-Light-Mediated Sulfonylimination of Tertiary Amines with Sulfonylazides Involving Csp3–Csp3 Bond Cleavage. Org Lett 2019; 21:2804-2807. [DOI: 10.1021/acs.orglett.9b00786] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Jiao Gui
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, Guangdong Engineering Research Center for Green Fine Chemicals, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, China
| | - Haisheng Xie
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, Guangdong Engineering Research Center for Green Fine Chemicals, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, China
| | - Huanfeng Jiang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, Guangdong Engineering Research Center for Green Fine Chemicals, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, China
| | - Wei Zeng
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, Guangdong Engineering Research Center for Green Fine Chemicals, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, China
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38
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Luis ET, Iranmanesh H, Beves JE. Photosubstitution reactions in ruthenium(II) trisdiimine complexes: Implications for photoredox catalysis. Polyhedron 2019. [DOI: 10.1016/j.poly.2018.11.057] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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39
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Durka K, Urban M, Dąbrowski M, Jankowski P, Kliś T, Luliński S. Cationic and Betaine-Type Boronated Acridinium Dyes: Synthesis, Characterization, and Photocatalytic Activity. ACS OMEGA 2019; 4:2482-2492. [PMID: 31459486 PMCID: PMC6648561 DOI: 10.1021/acsomega.8b03290] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Accepted: 01/18/2019] [Indexed: 05/07/2023]
Abstract
A series of isomeric boronated acridinium dyes were obtained by reactions of 10-(4'-octyloxyphenyl) functionalized 9(10H)-acridanone derivative with lithiated phenylboronic azaesters followed by aromatization with perchloric acid. The effect of the position of boronic group attached at ortho, meta, and para positions of the 9-phenyl ring on the photophysical properties was investigated. Conversion to related betaine trifluoroborato-substituted compounds was successfully performed, and the effect of this structural change on UV-vis absorption and fluorescence spectroscopy characteristics was established. Furthermore, cyclic voltammetry studies revealed that electrochemical behavior of cationic versus betaine structures is different in terms of redox potential values as well as stability. The theoretical calculations revealed a different scheme for molecular excitation processes in B(OH)2 versus BF3 --substituted compounds as charge transfer to acridinium core is observed from N-aryl or B-aryl moiety, respectively. Obtained compounds were active as photocatalysts in selected visible-light-promoted addition reactions to unsaturated substrates.
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40
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Imada Y, Okada Y, Noguchi K, Chiba K. Selective Functionalization of Styrenes with Oxygen Using Different Electrode Materials: Olefin Cleavage and Synthesis of Tetrahydrofuran Derivatives. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201809454] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Yasushi Imada
- Department of Applied Biological Science; Tokyo University of Agriculture and Technology; 3-5-8 Saiwai-cho, Fuchu Tokyo 183-8509 Japan
| | - Yohei Okada
- Department of Chemical Engineering; Tokyo University of Agriculture and Technology; 2-24-16 Naka-cho, Koganei Tokyo 184-8588 Japan
| | - Keiichi Noguchi
- Instrumentation Analysis Center; Tokyo University of Agriculture and Technology; 2-24-16 Naka-cho, Koganei Tokyo 184-8588 Japan
| | - Kazuhiro Chiba
- Department of Applied Biological Science; Tokyo University of Agriculture and Technology; 3-5-8 Saiwai-cho, Fuchu Tokyo 183-8509 Japan
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41
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Li R, Chen X, Wei S, Sun K, Fan L, Liu Y, Qu L, Zhao Y, Yu B. A Visible-Light-Promoted Metal-Free Strategy towards Arylphosphonates: Organic-Dye-Catalyzed Phosphorylation of Arylhydrazines with Trialkylphosphites. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201801122] [Citation(s) in RCA: 68] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Rui Li
- College of Chemistry and Molecular Engineering; Zhengzhou University; Zhengzhou 450001 People's Republic of China
| | - Xiaolan Chen
- College of Chemistry and Molecular Engineering; Zhengzhou University; Zhengzhou 450001 People's Republic of China
- The Key Laboratory for Chemical Biology of Fujian Province; Xiamen University; Xiamen 361005 People's Republic of China
| | - Shengkai Wei
- College of Chemistry and Molecular Engineering; Zhengzhou University; Zhengzhou 450001 People's Republic of China
| | - Kai Sun
- College of Chemistry and Molecular Engineering; Zhengzhou University; Zhengzhou 450001 People's Republic of China
| | - Lulu Fan
- College of Chemistry and Molecular Engineering; Zhengzhou University; Zhengzhou 450001 People's Republic of China
| | - Yan Liu
- College of Chemistry and Molecular Engineering; Zhengzhou University; Zhengzhou 450001 People's Republic of China
- College of biological and pharmaceutical engineering; Xinyang Agriculture & Forestry University; Xinyang 464000 People's Republic of China
| | - Lingbo Qu
- College of Chemistry and Molecular Engineering; Zhengzhou University; Zhengzhou 450001 People's Republic of China
| | - Yufen Zhao
- College of Chemistry and Molecular Engineering; Zhengzhou University; Zhengzhou 450001 People's Republic of China
- The Key Laboratory for Chemical Biology of Fujian Province; Xiamen University; Xiamen 361005 People's Republic of China
| | - Bing Yu
- College of Chemistry and Molecular Engineering; Zhengzhou University; Zhengzhou 450001 People's Republic of China
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42
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Imada Y, Okada Y, Noguchi K, Chiba K. Selective Functionalization of Styrenes with Oxygen Using Different Electrode Materials: Olefin Cleavage and Synthesis of Tetrahydrofuran Derivatives. Angew Chem Int Ed Engl 2018; 58:125-129. [PMID: 30375161 DOI: 10.1002/anie.201809454] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2018] [Revised: 10/11/2018] [Indexed: 01/06/2023]
Abstract
Electrode materials can have a significant impact on the course of an electrolysis reaction. Of particular interest is that different electrodes can generate different products from the same substrate. The electrode-material-selective transformations of styrene derivatives with molecular oxygen are reported. Platinum electrodes afford carbonyl products via cleavage of olefins, whereas tetrahydrofuran formation is achieved with carbon electrodes. A variety of different styrenes are available for both reactions. Electrolysis allows straightforward and mild chemical conversions that are metal- and oxidant-free. Electrochemical measurements illuminate the different effects of platinum and carbon electrodes on styrenes. The key to the differing reactions is probably that the oxidation potentials of the substrates are lower (higher HOMO energy) on carbon electrodes than on platinum electrodes. The adsorption of the substrates on carbon electrodes can also promote tetrahydrofuran formation.
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Affiliation(s)
- Yasushi Imada
- Department of Applied Biological Science, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu, Tokyo, 183-8509, Japan
| | - Yohei Okada
- Department of Chemical Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Naka-cho, Koganei, Tokyo, 184-8588, Japan
| | - Keiichi Noguchi
- Instrumentation Analysis Center, Tokyo University of Agriculture and Technology, 2-24-16 Naka-cho, Koganei, Tokyo, 184-8588, Japan
| | - Kazuhiro Chiba
- Department of Applied Biological Science, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu, Tokyo, 183-8509, Japan
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43
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Tanaka Y, Kubosaki S, Osaka K, Yamawaki M, Morita T, Yoshimi Y. Two Types of Cross-Coupling Reactions between Electron-Rich and Electron-Deficient Alkenes Assisted by Nucleophilic Addition Using an Organic Photoredox Catalyst. J Org Chem 2018; 83:13625-13635. [PMID: 30176147 DOI: 10.1021/acs.joc.8b02025] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Two types of photoreactions between electronically differentiated donor and acceptor alkenes assisted by nucleophilic addition using an organic photoredox catalyst efficiently afforded 1:1 or 2:1 cross-coupling adducts. A variety of alkenes and alcohols were employed in the photoreaction. Control of the reaction pathway (i.e., the formation of the 1:1 or 2:1 adduct) was achieved by varying the concentration of the alcohol used. Detailed mechanistic studies suggested that the organic photoredox catalyst acts as an effective electron mediator to promote the formation of the cross-coupling adducts.
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Affiliation(s)
- Yosuke Tanaka
- Department of Applied Chemistry and Biotechnology, Graduate School of Engineering , University of Fukui , 3-9-1 Bunkyo , Fukui 910-8507 , Japan
| | - Suzuka Kubosaki
- Department of Applied Chemistry and Biotechnology, Graduate School of Engineering , University of Fukui , 3-9-1 Bunkyo , Fukui 910-8507 , Japan
| | - Kazuyuki Osaka
- Department of Applied Chemistry and Biotechnology, Graduate School of Engineering , University of Fukui , 3-9-1 Bunkyo , Fukui 910-8507 , Japan
| | - Mugen Yamawaki
- Department of Applied Chemistry and Biotechnology, Graduate School of Engineering , University of Fukui , 3-9-1 Bunkyo , Fukui 910-8507 , Japan
| | - Toshio Morita
- Department of Applied Chemistry and Biotechnology, Graduate School of Engineering , University of Fukui , 3-9-1 Bunkyo , Fukui 910-8507 , Japan
| | - Yasuharu Yoshimi
- Department of Applied Chemistry and Biotechnology, Graduate School of Engineering , University of Fukui , 3-9-1 Bunkyo , Fukui 910-8507 , Japan
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44
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Sarabia FJ, Li Q, Ferreira EM. Cyclopentene Annulations of Alkene Radical Cations with Vinyl Diazo Species Using Photocatalysis. Angew Chem Int Ed Engl 2018; 57:11015-11019. [PMID: 29964359 PMCID: PMC6319273 DOI: 10.1002/anie.201805732] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2018] [Revised: 06/12/2018] [Indexed: 12/22/2022]
Abstract
A direct (3+2) cycloaddition between alkenes and vinyl diazo reagents using either Cr or Ru photocatalysis is described. The intermediacy of a radical cation species enables a nucleophilic interception by vinyl diazo compounds, a departure from their traditional electrophilic behavior. A variety of cyclopentenes are synthesized using this method, and experimental insights implicate a direct cycloaddition instead of a cyclopropanation/rearrangement process.
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Affiliation(s)
| | - Qiankun Li
- Department of Chemistry, University of Georgia, Athens, GA, 30602, USA
| | - Eric M Ferreira
- Department of Chemistry, University of Georgia, Athens, GA, 30602, USA
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45
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Sarabia FJ, Li Q, Ferreira EM. Cyclopentene Annulations of Alkene Radical Cations with Vinyl Diazo Species Using Photocatalysis. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201805732] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
| | - Qiankun Li
- Department of Chemistry University of Georgia Athens GA 30602 USA
| | - Eric M. Ferreira
- Department of Chemistry University of Georgia Athens GA 30602 USA
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46
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Wang Y, Li Y, Jiang X. Sulfur-Center-Involved Photocatalyzed Reactions. Chem Asian J 2018; 13:2208-2242. [DOI: 10.1002/asia.201800532] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2018] [Revised: 04/29/2018] [Indexed: 12/14/2022]
Affiliation(s)
- Yuhong Wang
- Shanghai Key Laboratory of Green Chemistry and Chemical Process; School of Chemistry and Molecular Engineering; East China Normal University; 3663 North Zhongshan Road Shanghai 200062 P. R. China
| | - Yiming Li
- Shanghai Key Laboratory of Green Chemistry and Chemical Process; School of Chemistry and Molecular Engineering; East China Normal University; 3663 North Zhongshan Road Shanghai 200062 P. R. China
| | - Xuefeng Jiang
- Shanghai Key Laboratory of Green Chemistry and Chemical Process; School of Chemistry and Molecular Engineering; East China Normal University; 3663 North Zhongshan Road Shanghai 200062 P. R. China
- State Key Laboratory of Organometallic Chemistry; Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 P. R. China
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47
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Guo X, Okamoto Y, Schreier MR, Ward TR, Wenger OS. Enantioselective synthesis of amines by combining photoredox and enzymatic catalysis in a cyclic reaction network. Chem Sci 2018; 9:5052-5056. [PMID: 29938035 PMCID: PMC5994792 DOI: 10.1039/c8sc01561a] [Citation(s) in RCA: 87] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2018] [Accepted: 05/05/2018] [Indexed: 12/19/2022] Open
Abstract
Visible light-driven reduction of imines to enantioenriched amines in aqueous solution is demonstrated for the first time. Excitation of a new water-soluble variant of the widely used [Ir(ppy)3] (ppy = 2-phenylpyridine) photosensitizer in the presence of a cyclic imine affords a highly reactive α-amino alkyl radical that is intercepted by hydrogen atom transfer (HAT) from ascorbate or thiol donors to afford the corresponding amine. The enzyme monoamine oxidase (MAO-N-9) selectively catalyzes the oxidation of one of the enantiomers to the corresponding imine. Upon combining the photoredox and biocatalytic processes under continuous photo-irradiation, enantioenriched amines are obtained in excellent yields. To the best of our knowledge, this is the first demonstration of a concurrent photoredox- and enzymatic catalysis leading to a light-driven asymmetric synthesis of amines.
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Affiliation(s)
- Xingwei Guo
- Department of Chemistry , University of Basel , St. Johanns-Ring 19 , 4056 Basel , Switzerland .
| | - Yasunori Okamoto
- Department of Chemistry , University of Basel , Mattenstrasse 24a, BPR 1096 , 4002 Basel , Switzerland .
| | - Mirjam R Schreier
- Department of Chemistry , University of Basel , St. Johanns-Ring 19 , 4056 Basel , Switzerland .
| | - Thomas R Ward
- Department of Chemistry , University of Basel , Mattenstrasse 24a, BPR 1096 , 4002 Basel , Switzerland .
| | - Oliver S Wenger
- Department of Chemistry , University of Basel , St. Johanns-Ring 19 , 4056 Basel , Switzerland .
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48
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Sideri IK, Voutyritsa E, Kokotos CG. Photoorganocatalysis, small organic molecules and light in the service of organic synthesis: the awakening of a sleeping giant. Org Biomol Chem 2018; 16:4596-4614. [PMID: 29888357 DOI: 10.1039/c8ob00725j] [Citation(s) in RCA: 164] [Impact Index Per Article: 27.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Photocatalysis, the use of light to promote organic transformations, is a field of catalysis that has received limited attention despite existing for over 100 years. With the revolution of photoredox catalysis in 2008, the rebirth or awakening of the field of photoorganocatalysis has brought new ideas and reactions to organic synthesis. This review will focus on the sudden outburst of literature regarding the use of small organic molecules as photocatalysts after 2013. In particular, it will focus on acridinium salts, benzophenones, pyrylium salts, thioxanthone derivatives, phenylglyoxylic acid, BODIPYs, flavin derivatives, and classes of organic molecules as catalysts for the photocatalytic generation of C-C and C-X bonds.
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Affiliation(s)
- Ioanna K Sideri
- Laboratory of Organic Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis, Athens 15771, Greece.
| | - Errika Voutyritsa
- Laboratory of Organic Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis, Athens 15771, Greece.
| | - Christoforos G Kokotos
- Laboratory of Organic Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis, Athens 15771, Greece.
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49
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Yang L, Wei L, Wan JP. Redox neutral [4+2] benzannulation of dienals and tertiary enaminones for benzaldehyde synthesis. Chem Commun (Camb) 2018; 54:7475-7478. [DOI: 10.1039/c8cc03514h] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The [4+2] benzannulation reactions between tertiary enaminones and dienals have been developed for the synthesis of polyfunctionalized benzaldehydes, providing a new access to benzaldehydes alongside the classical formylation strategy.
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Affiliation(s)
- Lu Yang
- College of Chemistry and Chemical Engineering
- Jiangxi Normal University
- Nanchang 330022
- P. R. China
| | - Li Wei
- College of Chemistry and Chemical Engineering
- Jiangxi Normal University
- Nanchang 330022
- P. R. China
| | - Jie-Ping Wan
- College of Chemistry and Chemical Engineering
- Jiangxi Normal University
- Nanchang 330022
- P. R. China
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