101
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Hsu CW, Sundén H. α-Aminoalkyl Radical Addition to Maleimides via Electron Donor–Acceptor Complexes. Org Lett 2018; 20:2051-2054. [DOI: 10.1021/acs.orglett.8b00597] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Chien-Wei Hsu
- Department of Chemistry and Chemical Engineering, Chalmers University of Technology, Kemivägen 10, 41296 Göteborg, Sweden
| | - Henrik Sundén
- Department of Chemistry and Chemical Engineering, Chalmers University of Technology, Kemivägen 10, 41296 Göteborg, Sweden
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102
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Kalck P, Urrutigoïty M. Tandem Hydroaminomethylation Reaction to Synthesize Amines from Alkenes. Chem Rev 2018; 118:3833-3861. [DOI: 10.1021/acs.chemrev.7b00667] [Citation(s) in RCA: 125] [Impact Index Per Article: 20.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Philippe Kalck
- Laboratoire de Chimie de Coordination du CNRS UPR 8241, Composante ENSIACET de l’Institut National Polytechnique de Toulouse, University of Toulouse UPS-INP, 4 allée Emile Monso, 31030 Toulouse Cedex 4, France
| | - Martine Urrutigoïty
- Laboratoire de Chimie de Coordination du CNRS UPR 8241, Composante ENSIACET de l’Institut National Polytechnique de Toulouse, University of Toulouse UPS-INP, 4 allée Emile Monso, 31030 Toulouse Cedex 4, France
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103
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Cetin MM, Hodson RT, Hart CR, Cordes DB, Findlater M, Casadonte DJ, Cozzolino AF, Mayer MF. Characterization and photocatalytic behavior of 2,9-di(aryl)-1,10-phenanthroline copper(i) complexes. Dalton Trans 2018; 46:6553-6569. [PMID: 28463361 DOI: 10.1039/c7dt00400a] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The synthesis, characterization, photophysical properties, theoretical calculations, and catalytic applications of 2,9-di(aryl)-1,10-phenanthroline copper(i) complexes are described. Specifically, this study made use of di(aryl)-1,10-phenanthroline ligands including 2,9-di(4-methoxyphenyl)-1,10-phenanthroline (1), 2,9-di(4-hydroxyphenyl)-1,10-phenanthroline (2), 2,9-di(4-methoxy-3-methylphenyl)-1,10-phenanthroline (3), and 2,9-di(4-hydroxy-3-methylphenyl)-1,10-phenanthroline (4). The 2 : 1 ligand-to-metal complexes, as PF6- salts, i.e., ([Cu·(1)2]PF6, [Cu·(2)2]PF6, [Cu·(3)2]PF6, and [Cu·(4)2]PF6) have been isolated and characterized. The structures of ligands 1 and 2 and complexes [Cu·(1)2]PF6 and [Cu·(3)2]PF6 have been determined by single-crystal X-ray analysis. The photoredox catalytic activity of these copper(i) complexes was investigated in an atom-transfer radical-addition (ATRA) reaction and the results showed fairly efficient activity, with a strong wavelength dependence. In order to better understand the observed catalytic activity, photophysical emission and absorption studies, and DFT calculations were also performed. It was determined that when the excitation wavelength was appropriate for exciting into the LUMO+1 or LUMO+2, catalysis would occur. On the contrary, excitations into the LUMO resulted in no observable catalysis. In light of these results, a mechanism for the ATRA photoredox catalytic cycle has been proposed.
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Affiliation(s)
- M Mustafa Cetin
- Department of Chemistry and Biochemistry, Texas Tech University, MS 41061, Lubbock, TX 79409, USA.
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104
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Zhang X, Qin J, Huang X, Meggers E. One-Pot Sequential Photoredox Chemistry and Asymmetric Transfer Hydrogenation with a Single Catalyst. European J Org Chem 2018. [DOI: 10.1002/ejoc.201701652] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Xiao Zhang
- Fachbereich Chemie; Philipps-Universität Marburg; Hans-Meerwein-Straße 4 35043 Marburg Germany
| | - Jie Qin
- Fachbereich Chemie; Philipps-Universität Marburg; Hans-Meerwein-Straße 4 35043 Marburg Germany
| | - Xiaoqiang Huang
- 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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105
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van As DJ, Connell TU, Brzozowski M, Scully AD, Polyzos A. Photocatalytic and Chemoselective Transfer Hydrogenation of Diarylimines in Batch and Continuous Flow. Org Lett 2018; 20:905-908. [DOI: 10.1021/acs.orglett.7b03565] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Dean J. van As
- School
of Chemistry, The University of Melbourne, Parkville, VIC 3010, Australia
| | | | - Martin Brzozowski
- School
of Chemistry, The University of Melbourne, Parkville, VIC 3010, Australia
- CSIRO Manufacturing, Clayton, VIC 3068, Australia
| | | | - Anastasios Polyzos
- School
of Chemistry, The University of Melbourne, Parkville, VIC 3010, Australia
- CSIRO Manufacturing, Clayton, VIC 3068, Australia
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106
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Kanyiva KS, Makino S, Shibata T. Silver-Catalyzed Efficient Synthesis of Oxindoles and Pyrroloindolines via α-Aminoalkylation of N
-Arylacrylamides with Amino Acid Derivatives. Chem Asian J 2018; 13:496-499. [DOI: 10.1002/asia.201701739] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2017] [Indexed: 01/10/2023]
Affiliation(s)
- Kyalo Stephen Kanyiva
- Global Center for Science and Engineering, School of Advanced Science and Engineering; Waseda University; Shinjuku Tokyo 169-8555 Japan
| | - Sohei Makino
- Department of Chemistry and Biochemistry, School of Advanced Science and Engineering; Waseda University; Shinjuku Tokyo 169-8555 Japan
| | - Takanori Shibata
- Department of Chemistry and Biochemistry, School of Advanced Science and Engineering; Waseda University; Shinjuku Tokyo 169-8555 Japan
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107
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Guo X, Wenger OS. Reductive Amination by Photoredox Catalysis and Polarity-Matched Hydrogen Atom Transfer. Angew Chem Int Ed Engl 2018; 57:2469-2473. [PMID: 29240269 DOI: 10.1002/anie.201711467] [Citation(s) in RCA: 70] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2017] [Indexed: 12/23/2022]
Abstract
The excitation of a RuII photosensitizer in the presence of ascorbic acid leads to the reduction of iminium ions to electron-rich α-aminoalkyl radical intermediates, which are rapidly converted into reductive amination products by thiol-mediated hydrogen atom transfer (HAT). As a result, the reductive amination of carbonyl compounds with amines by photoredox catalysis proceeds in good to excellent yields and with broad substrate scope and good functional group tolerance. The three key features of this work are 1) the rapid interception of electron-rich α-aminoalkyl radical intermediates by polarity-matched HAT in a photoredox reaction, 2) the method of reductive amination by photoredox catalysis itself, and 3) the application of this new method for temporally and spatially controlled reactions on a solid support, as demonstrated by the attachment of a fluorescent dye on an activated cellulose support by photoredox-catalyzed reductive amination.
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Affiliation(s)
- Xingwei Guo
- Department of Chemistry, University of Basel, St. Johanns-Ring 19, 4056, Basel, Switzerland
| | - Oliver S Wenger
- Department of Chemistry, University of Basel, St. Johanns-Ring 19, 4056, Basel, Switzerland
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108
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Guo X, Wenger OS. Reduktive Aminierung durch Photoredoxkatalyse über polaritätsangepassten Wasserstoffatomtransfer. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201711467] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Xingwei Guo
- Departement Chemie; Universität Basel; St. Johanns-Ring 19 4056 Basel Schweiz
| | - Oliver S. Wenger
- Departement Chemie; Universität Basel; St. Johanns-Ring 19 4056 Basel Schweiz
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109
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Corrigan N, Shanmugam S, Xu J, Boyer C. Photocatalysis in organic and polymer synthesis. Chem Soc Rev 2018; 45:6165-6212. [PMID: 27819094 DOI: 10.1039/c6cs00185h] [Citation(s) in RCA: 464] [Impact Index Per Article: 77.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
This review, with over 600 references, summarizes the recent applications of photoredox catalysis for organic transformation and polymer synthesis. Photoredox catalysts are metallo- or organo-compounds capable of absorbing visible light, resulting in an excited state species. This excited state species can donate or accept an electron from other substrates to mediate redox reactions at ambient temperature with high atom efficiency. These catalysts have been successfully implemented for the discovery of novel organic reactions and synthesis of added-value chemicals with an excellent control of selectivity and stereo-regularity. More recently, such catalysts have been implemented by polymer chemists to post-modify polymers in high yields, as well as to effectively catalyze reversible deactivation radical polymerizations and living polymerizations. These catalysts create new approaches for advanced organic transformation and polymer synthesis. The objective of this review is to give an overview of this emerging field to organic and polymer chemists as well as materials scientists.
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Affiliation(s)
- Nathaniel Corrigan
- Centre for Advanced Macromolecular Design (CAMD), School of Chemical Engineering, UNSW Australia, Sydney, NSW 2052, Australia. and Australian Centre for NanoMedicine, School of Chemical Engineering, UNSW Australia, Sydney, NSW 2052, Australia
| | - Sivaprakash Shanmugam
- Centre for Advanced Macromolecular Design (CAMD), School of Chemical Engineering, UNSW Australia, Sydney, NSW 2052, Australia.
| | - Jiangtao Xu
- Centre for Advanced Macromolecular Design (CAMD), School of Chemical Engineering, UNSW Australia, Sydney, NSW 2052, Australia. and Australian Centre for NanoMedicine, School of Chemical Engineering, UNSW Australia, Sydney, NSW 2052, Australia
| | - Cyrille Boyer
- Centre for Advanced Macromolecular Design (CAMD), School of Chemical Engineering, UNSW Australia, Sydney, NSW 2052, Australia. and Australian Centre for NanoMedicine, School of Chemical Engineering, UNSW Australia, Sydney, NSW 2052, Australia
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110
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Qing Z, Cao H, Cheng P, Wang W, Zeng J, Xie H. Visible light photoredox catalyzed semisynthesis of the analogues of maclekarpine E: a series of 6-vinyl substituted dihydrobenzophenanthridine alkaloids. Org Chem Front 2018. [DOI: 10.1039/c7qo00617a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A photoredox neutral vinylation of dihydrobenzophenanthridines 5 was developed to access the analogue of maclekarpine E (8). In this reaction, Ir(ppy)2(dtbbpy)PF6 was used as a photocatalyst (PC) and α-amino C-radicals 6 were the key reactive intermediates.
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Affiliation(s)
- Zhixing Qing
- National and Local Union Engineering Research Center of Veterinary Herbal Medicine Resource and Initiative
- Hunan Agricultural University
- Changsha
- China
- School of Pharmacy
| | - Hualiang Cao
- National and Local Union Engineering Research Center of Veterinary Herbal Medicine Resource and Initiative
- Hunan Agricultural University
- Changsha
- China
| | - Pi Cheng
- National and Local Union Engineering Research Center of Veterinary Herbal Medicine Resource and Initiative
- Hunan Agricultural University
- Changsha
- China
- Hunan Co-Innovation Center for Utilization of Botanical Functional Ingredients
| | - Wei Wang
- National and Local Union Engineering Research Center of Veterinary Herbal Medicine Resource and Initiative
- Hunan Agricultural University
- Changsha
- China
| | - Jianguo Zeng
- National and Local Union Engineering Research Center of Veterinary Herbal Medicine Resource and Initiative
- Hunan Agricultural University
- Changsha
- China
- School of Pharmacy
| | - Hongqi Xie
- Hunan Co-Innovation Center for Utilization of Botanical Functional Ingredients
- Hunan Agricultural University
- Changsha
- China
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111
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Lu M, Liu Z, Zhang J, Tian Y, Qin H, Huang M, Hu S, Cai S. Synthesis of oxindoles through trifluoromethylation of N-aryl acrylamides by photoredox catalysis. Org Biomol Chem 2018; 16:6564-6568. [DOI: 10.1039/c8ob01922c] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A photocatalytic trifluoromethylation of activated alkenes has been established to access CF3-containing oxindoles under strong oxidant and transition metal free conditions.
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Affiliation(s)
- Maojian Lu
- Key Laboratory of Modern Analytical Science and Separation Technology of Fujian Province
- School of Chemistry
- Chemical Engineering and Environment
- Minnan Normal University
- Zhangzhou
| | - Zhiji Liu
- Key Laboratory of Modern Analytical Science and Separation Technology of Fujian Province
- School of Chemistry
- Chemical Engineering and Environment
- Minnan Normal University
- Zhangzhou
| | - Jinwang Zhang
- Key Laboratory of Modern Analytical Science and Separation Technology of Fujian Province
- School of Chemistry
- Chemical Engineering and Environment
- Minnan Normal University
- Zhangzhou
| | - Yu Tian
- Key Laboratory of Modern Analytical Science and Separation Technology of Fujian Province
- School of Chemistry
- Chemical Engineering and Environment
- Minnan Normal University
- Zhangzhou
| | - Honggui Qin
- Key Laboratory of Modern Analytical Science and Separation Technology of Fujian Province
- School of Chemistry
- Chemical Engineering and Environment
- Minnan Normal University
- Zhangzhou
| | - Mingqiang Huang
- Key Laboratory of Modern Analytical Science and Separation Technology of Fujian Province
- School of Chemistry
- Chemical Engineering and Environment
- Minnan Normal University
- Zhangzhou
| | - Shirong Hu
- Key Laboratory of Modern Analytical Science and Separation Technology of Fujian Province
- School of Chemistry
- Chemical Engineering and Environment
- Minnan Normal University
- Zhangzhou
| | - Shunyou Cai
- Key Laboratory of Modern Analytical Science and Separation Technology of Fujian Province
- School of Chemistry
- Chemical Engineering and Environment
- Minnan Normal University
- Zhangzhou
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112
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Cheng J, Xie J, Zhu C. Relay photocatalytic cascade reactions: synthesis of indolo[2,1-a]isoquinoline derivatives via double C(sp3)–H bond functionalization. Chem Commun (Camb) 2018; 54:1655-1658. [DOI: 10.1039/c7cc09820k] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A relay photoredox catalysis strategy concomitant with [1,5] hydrogen atom transfer has been applied in the construction of a biologically important indolo[2,1-a]isoquinoline framework via a cascade reaction. This reaction enables double C(sp3)–H bond functionalization and formation of two carbon–carbon double bonds.
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Affiliation(s)
- Jian Cheng
- State Key Laboratory of Coordination Chemistry
- Jiangsu Key Laboratory of Advanced Organic Materials
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing
| | - Jin Xie
- State Key Laboratory of Coordination Chemistry
- Jiangsu Key Laboratory of Advanced Organic Materials
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing
| | - Chengjian Zhu
- State Key Laboratory of Coordination Chemistry
- Jiangsu Key Laboratory of Advanced Organic Materials
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing
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113
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Yoshida T, Mori K. Expeditious synthesis of multisubstituted indoles via multiple hydrogen transfers. Chem Commun (Camb) 2018; 54:12686-12689. [DOI: 10.1039/c8cc07009a] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Expeditious synthesis of multisubstituted indoles was achieved by multiple Lewis acid promoted hydrogen transfers.
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Affiliation(s)
- Taira Yoshida
- Department of Applied Chemistry
- Graduate School of Engineering
- Tokyo University of Agriculture and Technology
- Tokyo 184-8588
- Japan
| | - Keiji Mori
- Department of Applied Chemistry
- Graduate School of Engineering
- Tokyo University of Agriculture and Technology
- Tokyo 184-8588
- Japan
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114
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Okamura I, Park S, Han JH, Notsu S, Sugiyama H. A Combination of Visible-light Photoredox and Metal Catalysis for the Mannich-type Reaction of N-Aryl Glycine Esters. CHEM LETT 2017. [DOI: 10.1246/cl.170706] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Izumi Okamura
- Department of Chemistry, Graduate School of Science, Kyoto University, Kitashirakawa-Oiwakecho, Sakyo-ku, Kyoto 606-8502
| | - Soyoung Park
- Department of Chemistry, Graduate School of Science, Kyoto University, Kitashirakawa-Oiwakecho, Sakyo-ku, Kyoto 606-8502
| | - Ji Hoon Han
- Department of Chemistry, Graduate School of Science, Kyoto University, Kitashirakawa-Oiwakecho, Sakyo-ku, Kyoto 606-8502
| | - Shunta Notsu
- Department of Industrial Chemistry, Faculty of Engineering, Kyoto University, Yoshida-honmachi, Sakyo-ku, Kyoto 606-8501
| | - Hiroshi Sugiyama
- Department of Chemistry, Graduate School of Science, Kyoto University, Kitashirakawa-Oiwakecho, Sakyo-ku, Kyoto 606-8502
- Institute for Integrated Cell-Material Sciences (iCeMS), Kyoto University, Yoshida-Ushinomiyacho, Sakyo-ku, Kyoto 606-8501
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115
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Borpatra PJ, Deb ML, Baruah PK. Visible light-promoted metal-free intramolecular cross dehydrogenative coupling approach to 1,3-oxazines. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.09.018] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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116
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Tung J, Ching JY, Ng YM, Tew LS, Khung YL. Grafting of Ring-Opened Cyclopropylamine Thin Films on Silicon (100) Hydride via UV Photoionization. ACS APPLIED MATERIALS & INTERFACES 2017; 9:31083-31094. [PMID: 28832115 DOI: 10.1021/acsami.7b08343] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The grafting of cyclopropylamine onto a silicon (100) hydride (Si-H) surface via a ring-opening mechanism using UV photoionization is described here. In brief, radicals generated from the Si-H surface upon UV irradiation were found to behave in classical hydrogen abstraction theory manner by which the distal amine group was first hydrogen abstracted and the radical propagated down to the cyclopropane moiety. This subsequently liberated the strained bonds of the cyclopropane group and initiated the surface grafting process, producing a thin film approximately 10-15 nm in height. Contact angle measurements also showed that such photoionization irradiation had yielded an extremely hydrophilic surface (∼21.3°) and X-ray photoelectron spectroscopy also confirmed the coupling was through the Si-C linkage. However, when the surface underwent high-temperature hydrosilylation (>160 °C), the reaction proceeded predominantly through the nucleophilic NH2 group to form a Si-N linkage to the surface. This rendered the surface hydrophobic and hence suggested that the Si-H homolysis model may not be the main process. To the best of our knowledge, this was the first attempt reported in the literature to use photoionization to directly graft cyclopropylamine onto a silicon surface and in due course generate a highly rich NH-terminated surface that was found to be highly bioactive in promoting cell viability on the basis of 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide studies.
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Affiliation(s)
- J Tung
- College of Arts and Sciences, University of North Carolina (UNC) at Chapel Hill , Chapel Hill, North Carolina 27514, United States
| | - J Y Ching
- Institute of New Drug Development, China Medical University , No. 91 Hsueh-Shih Road, Taichung 40402, Taiwan, Republic of China
| | - Y M Ng
- Advanced Medical and Dental Institute (AMDI), Universiti Sains Malaysia , 13200 Kepala Batas, Pulau Pinang, Malaysia
| | - L S Tew
- Advanced Medical and Dental Institute (AMDI), Universiti Sains Malaysia , 13200 Kepala Batas, Pulau Pinang, Malaysia
| | - Y L Khung
- Institute of New Drug Development, China Medical University , No. 91 Hsueh-Shih Road, Taichung 40402, Taiwan, Republic of China
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117
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Dhineshkumar J, Samaddar P, Prabhu KR. Catalyst-Free Cross-Dehydrogenative Coupling Strategy Using Air as an Oxidant: Synthesis of α-Aminophosphonates. ACS OMEGA 2017; 2:4885-4893. [PMID: 31457767 PMCID: PMC6641911 DOI: 10.1021/acsomega.7b00881] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2017] [Accepted: 08/09/2017] [Indexed: 05/03/2023]
Abstract
α-Aminophosphonates are synthesized by employing unfunctionalized starting materials using cross-dehydrogenative coupling strategy. This method does not require any catalyst and proceeds in the presence of open air as the only oxidant. Mechanistic studies revealed that the reaction is nucleophile dependent and specific to dialkyl phosphite and N-aryl tetrahydroisoquinoline derivatives.
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118
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Chaudhary R, Natarajan P. Visible Light Photoredox Activation of Sulfonyl Chlorides: Applications in Organic Synthesis. ChemistrySelect 2017. [DOI: 10.1002/slct.201701156] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Renu Chaudhary
- Department of Chemistry & Centre for Advanced Studies in Chemistry; Panjab University; Chandigarh - 160 014 India
| | - Palani Natarajan
- Department of Chemistry & Centre for Advanced Studies in Chemistry; Panjab University; Chandigarh - 160 014 India
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119
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Yamauchi D, Nishimura T, Yorimitsu H. Hydroxoiridium-Catalyzed Hydroalkylation of Terminal Alkenes with Ureas by C(sp3
)−H Bond Activation. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201702169] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Daisuke Yamauchi
- Department of Chemistry, Graduate School of Science; Kyoto University, Sakyo; Kyoto 606-8502 Japan
| | - Takahiro Nishimura
- Department of Chemistry, Graduate School of Science; Kyoto University, Sakyo; Kyoto 606-8502 Japan
| | - Hideki Yorimitsu
- Department of Chemistry, Graduate School of Science; Kyoto University, Sakyo; Kyoto 606-8502 Japan
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120
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Yamauchi D, Nishimura T, Yorimitsu H. Hydroxoiridium-Catalyzed Hydroalkylation of Terminal Alkenes with Ureas by C(sp 3 )-H Bond Activation. Angew Chem Int Ed Engl 2017; 56:7200-7204. [PMID: 28493651 DOI: 10.1002/anie.201702169] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2017] [Indexed: 01/21/2023]
Abstract
Direct alkylation of a methyl group, on di- and trisubstituted ureas, with terminal alkenes by C(sp3 )-H bond activation proceeded in the presence of a hydroxoiridium/bisphosphine catalyst to give high yields of the corresponding addition products. The hydroxoiridium/bisphosphine complex generates an amidoiridium intermediate by reaction with ureas having an N-H bond.
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Affiliation(s)
- Daisuke Yamauchi
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo, Kyoto, 606-8502, Japan
| | - Takahiro Nishimura
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo, Kyoto, 606-8502, Japan
| | - Hideki Yorimitsu
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo, Kyoto, 606-8502, Japan
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121
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Chen JR, Yan DM, Wei Q, Xiao WJ. Photocascade Catalysis: A New Strategy for Cascade Reactions. CHEMPHOTOCHEM 2017. [DOI: 10.1002/cptc.201700008] [Citation(s) in RCA: 114] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Jia-Rong Chen
- CCNU-uOttawa Joint Research Centre; Key Laboratory of Pesticide & Chemical Biology; Ministry of Education, College of Chemistry; Central China Normal University; 152 Luoyu Road, Wuhan Hubei 430079 China
| | - Dong-Mei Yan
- CCNU-uOttawa Joint Research Centre; Key Laboratory of Pesticide & Chemical Biology; Ministry of Education, College of Chemistry; Central China Normal University; 152 Luoyu Road, Wuhan Hubei 430079 China
| | - Qiang Wei
- CCNU-uOttawa Joint Research Centre; Key Laboratory of Pesticide & Chemical Biology; Ministry of Education, College of Chemistry; Central China Normal University; 152 Luoyu Road, Wuhan Hubei 430079 China
| | - Wen-Jing Xiao
- CCNU-uOttawa Joint Research Centre; Key Laboratory of Pesticide & Chemical Biology; Ministry of Education, College of Chemistry; Central China Normal University; 152 Luoyu Road, Wuhan Hubei 430079 China
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122
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Yang Q, Zhang L, Ye C, Luo S, Wu L, Tung C. Visible‐Light‐Promoted Asymmetric Cross‐Dehydrogenative Coupling of Tertiary Amines to Ketones by Synergistic Multiple Catalysis. Angew Chem Int Ed Engl 2017; 56:3694-3698. [DOI: 10.1002/anie.201700572] [Citation(s) in RCA: 180] [Impact Index Per Article: 25.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2017] [Indexed: 01/06/2023]
Affiliation(s)
- Qi Yang
- Key Laboratory for 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
- Key Laboratory for Molecular Recognition and Function Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Chen Ye
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials Technical Institute of Physics and Chemistry Chinese Academy of Sciences Beijing 100190 China
| | - Sanzhong Luo
- Key Laboratory for Molecular Recognition and Function Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Li‐Zhu Wu
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials Technical Institute of Physics and Chemistry Chinese Academy of Sciences Beijing 100190 China
| | - Chen‐Ho Tung
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials Technical Institute of Physics and Chemistry Chinese Academy of Sciences Beijing 100190 China
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123
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Yang Q, Zhang L, Ye C, Luo S, Wu L, Tung C. Visible‐Light‐Promoted Asymmetric Cross‐Dehydrogenative Coupling of Tertiary Amines to Ketones by Synergistic Multiple Catalysis. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201700572] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Qi Yang
- Key Laboratory for 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
- Key Laboratory for Molecular Recognition and Function Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Chen Ye
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials Technical Institute of Physics and Chemistry Chinese Academy of Sciences Beijing 100190 China
| | - Sanzhong Luo
- Key Laboratory for Molecular Recognition and Function Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Li‐Zhu Wu
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials Technical Institute of Physics and Chemistry Chinese Academy of Sciences Beijing 100190 China
| | - Chen‐Ho Tung
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials Technical Institute of Physics and Chemistry Chinese Academy of Sciences Beijing 100190 China
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124
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Borra S, Chandrasekhar D, Adhikary S, Rasala S, Gokulnath S, Maurya RA. Visible-Light Driven Photocascade Catalysis: Union of N,N-Dimethylanilines and α-Azidochalcones in Flow Microreactors. J Org Chem 2017; 82:2249-2256. [DOI: 10.1021/acs.joc.6b02932] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Satheesh Borra
- Applied Organic Chemistry Group, Chemical Science &Technology Division, CSIR-North East Institute of Science and Technology, Jorhat, Assam 785006, India
- Academy of Scientific and Innovative Research (AcSIR), New Delhi 110025, India
| | - D. Chandrasekhar
- Applied Organic Chemistry Group, Chemical Science &Technology Division, CSIR-North East Institute of Science and Technology, Jorhat, Assam 785006, India
- Academy of Scientific and Innovative Research (AcSIR), New Delhi 110025, India
| | - Susanta Adhikary
- Department
of Medicinal Chemistry and Pharmacology, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India
- Department
of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research, Kolkata 700032, India
| | - Sandeep Rasala
- Department
of Medicinal Chemistry and Pharmacology, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India
| | - Sabapathi Gokulnath
- School
of Chemistry, Indian Institute of Science Education and Research, Thiruvananthapuram 695016, India
| | - Ram Awatar Maurya
- Applied Organic Chemistry Group, Chemical Science &Technology Division, CSIR-North East Institute of Science and Technology, Jorhat, Assam 785006, India
- Academy of Scientific and Innovative Research (AcSIR), New Delhi 110025, India
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125
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Li L, Xiao T, Chen H, Zhou L. Visible-Light-Mediated Two-Fold Unsymmetrical C(sp 3 )-H Functionalization and Double C-F Substitution. Chemistry 2017; 23:2249-2254. [PMID: 28005304 DOI: 10.1002/chem.201605919] [Citation(s) in RCA: 75] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2016] [Indexed: 11/11/2022]
Abstract
A visible-light-mediated [3+3] annulation of tertiary amines with α-trifluoromethyl alkenes was developed. The reaction offers a direct route to fluorinated tetrahydropyridines and azabicyclo[3.m.1] frameworks under very mild conditions. This protocol presents a rare example of dual sp3 C-H functionalization of tertiary amines with the formation of two different C-C bonds (one sp3 -sp3 bond, one sp2 -sp3 bond). Moreover, two consecutive C-F substitutions in a trifluoromethyl group were achieved in one pot using visible light photoredox catalysis, which enables an unprecedented ring construction.
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Affiliation(s)
- Linyong Li
- School of Chemistry, Sun Yat-Sen University, 135 Xingang West Road, Guangzhou, 510275, P. R. China
| | - Tiebo Xiao
- School of Chemistry, Sun Yat-Sen University, 135 Xingang West Road, Guangzhou, 510275, P. R. China
| | - Haoguo Chen
- School of Chemistry, Sun Yat-Sen University, 135 Xingang West Road, Guangzhou, 510275, P. R. China
| | - Lei Zhou
- School of Chemistry, Sun Yat-Sen University, 135 Xingang West Road, Guangzhou, 510275, P. R. China
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126
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Liu Y, Wang C, Xue D, Xiao M, Liu J, Li C, Xiao J. Reactions Catalysed by a Binuclear Copper Complex: Relay Aerobic Oxidation of N
-Aryl Tetrahydroisoquinolines to Dihydroisoquinolones with a Vitamin B1 Analogue. Chemistry 2017; 23:3062-3066. [PMID: 27880016 DOI: 10.1002/chem.201604750] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2016] [Indexed: 12/22/2022]
Affiliation(s)
- Yuxia Liu
- Key Laboratory of Applied Surface and Colloid Chemistry; Ministry of Education and School of Chemistry and Chemical Engineering; Shaanxi Normal University; Xi'an 710062 P. R. China
| | - Chao Wang
- Key Laboratory of Applied Surface and Colloid Chemistry; Ministry of Education and School of Chemistry and Chemical Engineering; Shaanxi Normal University; Xi'an 710062 P. R. China
| | - Dong Xue
- Key Laboratory of Applied Surface and Colloid Chemistry; Ministry of Education and School of Chemistry and Chemical Engineering; Shaanxi Normal University; Xi'an 710062 P. R. China
| | - Miao Xiao
- Key Laboratory of Applied Surface and Colloid Chemistry; Ministry of Education and School of Chemistry and Chemical Engineering; Shaanxi Normal University; Xi'an 710062 P. R. China
| | - Jiao Liu
- Key Laboratory of Applied Surface and Colloid Chemistry; Ministry of Education and School of Chemistry and Chemical Engineering; Shaanxi Normal University; Xi'an 710062 P. R. China
| | - Chaoqun Li
- Key Laboratory of Applied Surface and Colloid Chemistry; Ministry of Education and School of Chemistry and Chemical Engineering; Shaanxi Normal University; Xi'an 710062 P. R. China
| | - Jianliang Xiao
- Key Laboratory of Applied Surface and Colloid Chemistry; Ministry of Education and School of Chemistry and Chemical Engineering; Shaanxi Normal University; Xi'an 710062 P. R. China
- Department of Chemistry; University of Liverpool; Liverpool L69 7ZD UK
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127
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Zhou MJ, Zhu SF, Zhou QL. Copper-catalyzed Mannich-type oxidative β-functionalization of tertiary amines. Chem Commun (Camb) 2017; 53:8770-8773. [DOI: 10.1039/c7cc04761d] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
A copper-catalyzed Mannich-type oxidative β-functionalization reaction of amines has been developed.
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Affiliation(s)
- Min-Jie Zhou
- State Key Laboratory and Institute of Elemento-organic Chemistry
- College of Chemistry
- Nankai University
- Tianjin 300071
- China
| | - Shou-Fei Zhu
- State Key Laboratory and Institute of Elemento-organic Chemistry
- College of Chemistry
- Nankai University
- Tianjin 300071
- China
| | - Qi-Lin Zhou
- State Key Laboratory and Institute of Elemento-organic Chemistry
- College of Chemistry
- Nankai University
- Tianjin 300071
- China
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128
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129
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Gini A, Brandhofer T, Mancheño OG. Recent progress in mild Csp3–H bond dehydrogenative or (mono-) oxidative functionalization. Org Biomol Chem 2017; 15:1294-1312. [DOI: 10.1039/c6ob02474b] [Citation(s) in RCA: 59] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
This review summarizes recent advances in mild and green dehydrogenative and mono-oxidative Csp3–H bond functionalization reactions, considering both new approaches and the re-elaboration of known methodologies.
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Affiliation(s)
- Andrea Gini
- Institute for Organic Chemistry
- University of Regensburg
- 93053 Regensburg
- Germany
- Straubing Center of Science for Renewable Resources
| | - Tobias Brandhofer
- Institute for Organic Chemistry
- University of Regensburg
- 93053 Regensburg
- Germany
- Straubing Center of Science for Renewable Resources
| | - Olga García Mancheño
- Institute for Organic Chemistry
- University of Regensburg
- 93053 Regensburg
- Germany
- Straubing Center of Science for Renewable Resources
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130
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Ando Y, Kamatsuka T, Shinokubo H, Miyake Y. Selective α-arylation of α,β-unsaturated imides mediated by a visible light photoredox catalyst. Chem Commun (Camb) 2017; 53:9136-9138. [DOI: 10.1039/c7cc04776b] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Visible light-mediated α-arylation of α,β-unsaturated imides is achieved via aminium radicals generated from diarylalkylamines using a photoredox catalyst.
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Affiliation(s)
- Yuki Ando
- Department of Molecular and Macromolecular Chemistry
- Graduate School of Engineering
- Nagoya University
- Nagoya 464-8603
- Japan
| | - Takuto Kamatsuka
- Department of Molecular and Macromolecular Chemistry
- Graduate School of Engineering
- Nagoya University
- Nagoya 464-8603
- Japan
| | - Hiroshi Shinokubo
- Department of Molecular and Macromolecular Chemistry
- Graduate School of Engineering
- Nagoya University
- Nagoya 464-8603
- Japan
| | - Yoshihiro Miyake
- Department of Molecular and Macromolecular Chemistry
- Graduate School of Engineering
- Nagoya University
- Nagoya 464-8603
- Japan
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131
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Liu J, Xie J, Zhu C. Photoredox organocatalytic α-amino C(sp3)–H functionalization for the synthesis of 5-membered heterocyclic γ-amino acid derivatives. Org Chem Front 2017. [DOI: 10.1039/c7qo00644f] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A photoredox organocatalytic, highly selective α-amino C(sp3)–H bond functionalization offers an elegant intramolecular access to cyclic γ-amino acid analogues in satisfactory yields.
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Affiliation(s)
- Jing Liu
- State Key Laboratory of Coordination Chemistry
- Jiangsu Key Laboratory of Advanced Organic Materials
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing 210023
| | - Jin Xie
- State Key Laboratory of Coordination Chemistry
- Jiangsu Key Laboratory of Advanced Organic Materials
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing 210023
| | - Chengjian Zhu
- State Key Laboratory of Coordination Chemistry
- Jiangsu Key Laboratory of Advanced Organic Materials
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing 210023
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132
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Zhao Y, Chen JR, Xiao WJ. Synthesis of Hydrazide-Containing Chroman-2-ones and Dihydroquinolin-2-ones via Photocatalytic Radical Cascade Reaction of Aroylhydrozones. Org Lett 2016; 18:6304-6307. [DOI: 10.1021/acs.orglett.6b03174] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Yu Zhao
- CCNU-uOttawa
Joint Research Centre, Key Laboratory of Pesticides and Chemical Biology,
Ministry of Education, College of Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan 430079, China
| | - Jia-Rong Chen
- CCNU-uOttawa
Joint Research Centre, Key Laboratory of Pesticides and Chemical Biology,
Ministry of Education, College of Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan 430079, China
| | - Wen-Jing Xiao
- CCNU-uOttawa
Joint Research Centre, Key Laboratory of Pesticides and Chemical Biology,
Ministry of Education, College of Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan 430079, China
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
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133
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Yang Z, Lu N, Wei Z, Cao J, Liang D, Duan H, Lin Y. Base-Promoted Intermolecular Cyclization of Substituted 3-Aryl(Heteroaryl)-3-chloroacrylaldehydes and Tetrahydroisoquinolines: An Approach to Access Pyrrolo[2,1-a]isoquinolines. J Org Chem 2016; 81:11950-11955. [DOI: 10.1021/acs.joc.6b01781] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Ziqi Yang
- Department of Organic Chemistry,
College of Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Ning Lu
- Department of Organic Chemistry,
College of Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Zhonglin Wei
- Department of Organic Chemistry,
College of Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Jungang Cao
- Department of Organic Chemistry,
College of Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Dapeng Liang
- Department of Organic Chemistry,
College of Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Haifeng Duan
- Department of Organic Chemistry,
College of Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Yingjie Lin
- Department of Organic Chemistry,
College of Chemistry, Jilin University, Changchun 130012, P. R. China
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134
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Hu B, Dong W, Feng Z, Gao X, Gao H, Xie X, Zhang Z. Tandem Photocatalysis: An Efficient Synthesis of Multisubstituted Benzimidazoles by Visible-Light-Induced Intramolecular Cyclization and Deprotection. ASIAN J ORG CHEM 2016. [DOI: 10.1002/ajoc.201600443] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Bei Hu
- School of Chemistry and Chemical Engineering; Shanghai Jiao Tong University; 800 Dongchuan Road Shanghai 200240 China
| | - Wuheng Dong
- School of Chemistry and Chemical Engineering; Shanghai Jiao Tong University; 800 Dongchuan Road Shanghai 200240 China
| | - Zhigang Feng
- School of Chemical and Environmental Engineering; Shanghai Institute of Technology; 100 Haiquan Road Shanghai 201418 China
| | - Xiaoshuang Gao
- School of Chemistry and Chemical Engineering; Shanghai Jiao Tong University; 800 Dongchuan Road Shanghai 200240 China
| | - Huang Gao
- School of Chemistry and Chemical Engineering; Shanghai Jiao Tong University; 800 Dongchuan Road Shanghai 200240 China
| | - Xiaomin Xie
- School of Chemistry and Chemical Engineering; Shanghai Jiao Tong University; 800 Dongchuan Road Shanghai 200240 China
| | - Zhaoguo Zhang
- School of Chemistry and Chemical Engineering; Shanghai Jiao Tong University; 800 Dongchuan Road Shanghai 200240 China
- State Key Laboratory of Organometallic Chemistry; Shanghai Institute of Organic Chemistry; 345 Lingling Road Shanghai 200032 China
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135
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Chen C, Hong B, Li W, Chang T, Lee G. Synthesis Of Biologically Active Bis(Indolyl)Methane Derivatives by Bisindole Alkylation of Tetrahydroisoquinolines with Visible‐Light Induced Ring‐Opening Fragmentation. ASIAN J ORG CHEM 2016. [DOI: 10.1002/ajoc.201600415] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Chia‐Chueng Chen
- Department of Chemistry and BiochemistryNational Chung Cheng University 168 University Rd. Chia-Yi 621, Taiwan R.O.C
| | - Bor‐Cherng Hong
- Department of Chemistry and BiochemistryNational Chung Cheng University 168 University Rd. Chia-Yi 621, Taiwan R.O.C
| | - Wen‐Shan Li
- Institute of ChemistryAcademia Sinica No. 128, Sec. 2, Academia Rd., Nankang Taipei 115, Taiwan R.O.C
| | - Tzu‐Ting Chang
- Institute of ChemistryAcademia Sinica No. 128, Sec. 2, Academia Rd., Nankang Taipei 115, Taiwan R.O.C
| | - Gene‐Hsiang Lee
- Instrumentation CenterNational Taiwan University No 1, Sec 4, Roosevelt Rd. Taipei 106, Taiwan R.O.C
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136
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α-Alkylation of tertiary amines by C(sp3)–C(sp3) cross-coupling under redox neutral photocatalysis. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.08.073] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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137
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Hwang JY, Baek JH, Shin TI, Shin JH, Oh JW, Kim KP, You Y, Kang EJ. Single-Electron-Transfer Strategy for Reductive Radical Cyclization: Fe(CO)5 and Phenanthroline System. Org Lett 2016; 18:4900-4903. [DOI: 10.1021/acs.orglett.6b02375] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Joon Young Hwang
- Department
of Applied Chemistry, Kyung Hee University, Yongin 17104, Korea
| | - Jong Hwa Baek
- Department
of Applied Chemistry, Kyung Hee University, Yongin 17104, Korea
| | - Tae Il Shin
- Department
of Applied Chemistry, Kyung Hee University, Yongin 17104, Korea
| | - Jung Ha Shin
- Department
of Applied Chemistry, Kyung Hee University, Yongin 17104, Korea
| | - Jae Won Oh
- Department
of Applied Chemistry, Kyung Hee University, Yongin 17104, Korea
| | - Kwang Pyo Kim
- Department
of Applied Chemistry, Kyung Hee University, Yongin 17104, Korea
| | - Youngmin You
- Division
of Chemical Engineering and Materials Science, Ewha Womans University, Seoul 03760, Korea
| | - Eun Joo Kang
- Department
of Applied Chemistry, Kyung Hee University, Yongin 17104, Korea
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138
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Nakajima K, Miyake Y, Nishibayashi Y. Synthetic Utilization of α-Aminoalkyl Radicals and Related Species in Visible Light Photoredox Catalysis. Acc Chem Res 2016; 49:1946-56. [PMID: 27505299 DOI: 10.1021/acs.accounts.6b00251] [Citation(s) in RCA: 292] [Impact Index Per Article: 36.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Single electron oxidation of amines provides an efficient way to access synthetically useful α-aminoalkyl radicals as reactive intermediates. After the single electron oxidation of amines, fragmentation of the resulting radical cations proceeds to give the α-aminoalkyl radicals along with generation of a proton. In the synthetic utilization of the α-aminoalkyl radicals, precise control of single electron transfer is essential, because further oxidation of the α-aminoalkyl radicals occurs more easily than the starting amines and the α-aminoalkyl radicals are converted into the corresponding iminium ions. As a result, photoinduced single electron transfer is quite attractive in the synthetic utilization of the α-aminoalkyl radicals. Recently, visible light-photoredox catalysis using transition metal-polypyridyl complexes and other dyes as catalysts has attracted considerable attention, where useful molecular transformations can be achieved through the single electron transfer process between the excited catalysts and substrates. In this context, MacMillan et al. ( Science 2011, 334 , 1114 , DOI: 10.1126/science.1213920 ) reported an aromatic substitution reaction of cyanoarenes with amines, where α-aminoalkyl radicals work as key reactive intermediates. Pandey and Reiser et al. ( Org. Lett. 2012 , 14 , 672 , DOI: 10.1021/ol202857t ) and our group ( Nishibayashi et al. J. Am. Chem. Soc. 2012 , 134 , 3338 , DOI: 10.1021/ja211770y ) independently reported reactions of amines with α,β-unsaturated carbonyl compounds, where addition of α-aminoalkyl radicals to alkenes is a key step. After these earliest examples, nowadays, a variety of transformations using the α-aminoalkyl radicals as reactive intermediates have been reported by many groups. The α-aminoalkyl radicals are usually produced from amines by single electron oxidation and the subsequent deprotonation of the C-H bond adjacent to the nitrogen atom. In addition, the α-aminoalkyl radicals are also produced from α-silylamines and α-amino acids in high efficiency through desilylation or decarboxylation after the single electron oxidation. The generated α-aminoalkyl radicals are utilized in a variety of reaction systems. In fact, reactions based on the addition of α-aminoalkyl radicals to alkenes and other unsaturated bonds have been extensively studied. Aromatic and other types of substitution reactions have also been investigated. Some of these transformations are achieved by combination of photoredox catalysts and other catalysts such as Brønsted and Lewis acids, organocatalysts, and transition metal catalysts. It is also noteworthy that the enantioselective reactions have been accomplished by combination of photoredox catalysts and chiral catalysts. The strategy for the generation of α-aminoalkyl radicals can be applied to utilize other types of alkyl radicals. In the generation of α-aminoalkyl radicals, the bond dissociation of the radical cations occurs at the α-position of amines. In relation to this process, synthetic utilization of other types of alkyl radicals generated by the bond dissociation of the radical cations at a remote position has been also investigated. These alkyl radicals have been applied to molecular transformations in a manner similar to the α-aminoalkyl radicals. Recently, organic synthesis using the α-aminoalkyl radicals and related alkyl radicals has been studied extensively. In this Account, we describe recent advances in photoredox-catalyzed synthetic utilization of these alkyl radicals.
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Affiliation(s)
- Kazunari Nakajima
- Department of Systems Innovation,
School of Engineering, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Yoshihiro Miyake
- Department of Systems Innovation,
School of Engineering, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Yoshiaki Nishibayashi
- Department of Systems Innovation,
School of Engineering, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
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139
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Abstract
The interaction between an electronically excited photocatalyst and an organic molecule can result in the genertion of a diverse array of reactive intermediates that can be manipulated in a variety of ways to result in synthetically useful bond constructions. This Review summarizes dual-catalyst strategies that have been applied to synthetic photochemistry. Mechanistically distinct modes of photocatalysis are discussed, including photoinduced electron transfer, hydrogen atom transfer, and energy transfer. We focus upon the cooperative interactions of photocatalysts with redox mediators, Lewis and Brønsted acids, organocatalysts, enzymes, and transition metal complexes.
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Affiliation(s)
- Kazimer
L. Skubi
- Department of Chemistry, University of Wisconsin−Madison, 1101 University Avenue, Madison, Wisconsin 53706, United States
| | - Travis R. Blum
- Department of Chemistry, University of Wisconsin−Madison, 1101 University Avenue, Madison, Wisconsin 53706, United States
| | - Tehshik P. Yoon
- Department of Chemistry, University of Wisconsin−Madison, 1101 University Avenue, Madison, Wisconsin 53706, United States
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140
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Bartling H, Eisenhofer A, König B, Gschwind RM. The Photocatalyzed Aza-Henry Reaction of N-Aryltetrahydroisoquinolines: Comprehensive Mechanism, H(•)- versus H(+)-Abstraction, and Background Reactions. J Am Chem Soc 2016; 138:11860-71. [PMID: 27541322 DOI: 10.1021/jacs.6b06658] [Citation(s) in RCA: 106] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
The cross-dehydrogenative coupling (CDC) reaction of N-aryltetrahydroisoquinolines (THIQ) is one of the most exploited photocatalytic transformation and a test reaction for an exceptional variety of catalysts. However, its mechanism remained unclear concerning involved intermediates, reactive pathways of the amine radical cation and the influence of oxygen and the light source. Therefore, nuclear magnetic resonance (NMR), electron spin resonance (ESR) and synthetic methods were combined to provide a comprehensive picture of the reaction mechanism using Ru(bpy)3Cl2 as a photocatalyst under aerobic and anaerobic conditions. The reaction profiles and involved intermediates were monitored and analyzed by NMR spectroscopy. Several intermediates contributing to product formation were identified, the iminium ion, the hydroperoxide and dimer of THIQ, and a new ring opened intermediate, cleaved at the benzylic C-N bond. Mechanistic evidence is given that under anaerobic conditions preferentially the α-amino radical is formed by deprotonation, in contrast to the formation of iminium ions via H(•)-abstraction in the presence of oxygen. Further, the light-induced background reaction in the absence of the catalyst was studied in detail, revealing that the product formation rate is correlated to the intensity and wavelength of the light source and that oxygen is essential for an efficient conversion. The reaction rate and efficiency is comparable to previously reported photocatalytic systems, performed under aerobic conditions in combination with intense blue light sources. Thus, the multitude of reaction parameters investigated reveals the preference for hydrogen atom or proton abstraction in photoreactions and allows to assess the influence of experimental conditions on the mechanistic pathways.
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Affiliation(s)
- Hanna Bartling
- Institute of Organic Chemistry, Faculty of Chemistry and Pharmacy, University of Regensburg , D-93040 Regensburg, Germany
| | - Anna Eisenhofer
- Institute of Organic Chemistry, Faculty of Chemistry and Pharmacy, University of Regensburg , D-93040 Regensburg, Germany
| | - Burkhard König
- Institute of Organic Chemistry, Faculty of Chemistry and Pharmacy, University of Regensburg , D-93040 Regensburg, Germany
| | - Ruth M Gschwind
- Institute of Organic Chemistry, Faculty of Chemistry and Pharmacy, University of Regensburg , D-93040 Regensburg, Germany
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141
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Huang J, Li L, Xiao T, Mao ZW, Zhou L. Redox-Neutral C1 Functionalization of Unprotected Tetrahydroisoquinolines with Diazo Carbonyl Compounds. ASIAN J ORG CHEM 2016. [DOI: 10.1002/ajoc.201600338] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Jun Huang
- School of Chemistry and Chemical Engineering; Sun Yat-Sen University; 135 Xingang West Road Guangzhou 510275 China
| | - Linyong Li
- School of Chemistry and Chemical Engineering; Sun Yat-Sen University; 135 Xingang West Road Guangzhou 510275 China
| | - Tiebo Xiao
- School of Chemistry and Chemical Engineering; Sun Yat-Sen University; 135 Xingang West Road Guangzhou 510275 China
| | - Zong-wan Mao
- School of Chemistry and Chemical Engineering; Sun Yat-Sen University; 135 Xingang West Road Guangzhou 510275 China
| | - Lei Zhou
- School of Chemistry and Chemical Engineering; Sun Yat-Sen University; 135 Xingang West Road Guangzhou 510275 China
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142
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Xie J, Yu J, Rudolph M, Rominger F, Hashmi ASK. Monofluoroalkenylation of Dimethylamino Compounds through Radical–Radical Cross‐Coupling. Angew Chem Int Ed Engl 2016; 55:9416-21. [DOI: 10.1002/anie.201602347] [Citation(s) in RCA: 165] [Impact Index Per Article: 20.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2016] [Indexed: 12/14/2022]
Affiliation(s)
- Jin Xie
- Organisch-Chemisches InstitutUniversität Heidelberg Im Neuenheimer Feld 270 69120 Heidelberg Germany
| | - Jintao Yu
- Organisch-Chemisches InstitutUniversität Heidelberg Im Neuenheimer Feld 270 69120 Heidelberg Germany
| | - Matthias Rudolph
- Organisch-Chemisches InstitutUniversität Heidelberg Im Neuenheimer Feld 270 69120 Heidelberg Germany
| | - Frank Rominger
- Organisch-Chemisches InstitutUniversität Heidelberg Im Neuenheimer Feld 270 69120 Heidelberg Germany
| | - A. Stephen K. Hashmi
- Organisch-Chemisches InstitutUniversität Heidelberg Im Neuenheimer Feld 270 69120 Heidelberg Germany
- Chemistry Department, Faculty of ScienceKing Abdulaziz University (KAU) 21589 Jeddah Saudi Arabia
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143
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Abstract
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In
recent years, photoredox catalysis has come to the forefront
in organic chemistry as a powerful strategy for the activation of
small molecules. In a general sense, these approaches rely on the
ability of metal complexes and organic dyes to convert visible light
into chemical energy by engaging in single-electron transfer with
organic substrates, thereby generating reactive intermediates. In
this Perspective, we highlight the unique ability of photoredox catalysis
to expedite the development of completely new reaction mechanisms,
with particular emphasis placed on multicatalytic strategies that
enable the construction of challenging carbon–carbon and carbon–heteroatom
bonds.
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Affiliation(s)
- Megan H Shaw
- Merck Center for Catalysis at Princeton University , Princeton, New Jersey 08544, United States
| | - Jack Twilton
- Merck Center for Catalysis at Princeton University , Princeton, New Jersey 08544, United States
| | - David W C MacMillan
- Merck Center for Catalysis at Princeton University , Princeton, New Jersey 08544, United States
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144
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Ding W, Lu LQ, Liu J, Liu D, Song HT, Xiao WJ. Visible Light Photocatalytic Radical–Radical Cross-Coupling Reactions of Amines and Carbonyls: A Route to 1,2-Amino Alcohols. J Org Chem 2016; 81:7237-43. [DOI: 10.1021/acs.joc.6b01217] [Citation(s) in RCA: 66] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Wei Ding
- Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan, Hubei 430079, China
| | - Liang-Qiu Lu
- Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan, Hubei 430079, China
| | - Jing Liu
- Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan, Hubei 430079, China
| | - Dan Liu
- Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan, Hubei 430079, China
| | - Hai-Tao Song
- Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan, Hubei 430079, China
| | - Wen-Jing Xiao
- Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan, Hubei 430079, China
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145
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Rawner T, Knorn M, Lutsker E, Hossain A, Reiser O. Synthesis of Trifluoromethylated Sultones from Alkenols Using a Copper Photoredox Catalyst. J Org Chem 2016; 81:7139-47. [DOI: 10.1021/acs.joc.6b01001] [Citation(s) in RCA: 65] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Thomas Rawner
- Institut
für Organische
Chemie, Universität Regensburg, Universitätsstr. 31, 93053 Regensburg, Germany
| | - Matthias Knorn
- Institut
für Organische
Chemie, Universität Regensburg, Universitätsstr. 31, 93053 Regensburg, Germany
| | - Eugen Lutsker
- Institut
für Organische
Chemie, Universität Regensburg, Universitätsstr. 31, 93053 Regensburg, Germany
| | - Asik Hossain
- Institut
für Organische
Chemie, Universität Regensburg, Universitätsstr. 31, 93053 Regensburg, Germany
| | - Oliver Reiser
- Institut
für Organische
Chemie, Universität Regensburg, Universitätsstr. 31, 93053 Regensburg, Germany
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146
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Xie J, Yu J, Rudolph M, Rominger F, Hashmi ASK. Monofluoralkenylierung von Dimethylaminoverbindungen durch Radikal‐Radikal‐Kreuzkupplung. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201602347] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Jin Xie
- Organisch-Chemisches InstitutUniversität Heidelberg Im Neuenheimer Feld 270 69120 Heidelberg Deutschland
| | - Jintao Yu
- Organisch-Chemisches InstitutUniversität Heidelberg Im Neuenheimer Feld 270 69120 Heidelberg Deutschland
| | - Matthias Rudolph
- Organisch-Chemisches InstitutUniversität Heidelberg Im Neuenheimer Feld 270 69120 Heidelberg Deutschland
| | - Frank Rominger
- Organisch-Chemisches InstitutUniversität Heidelberg Im Neuenheimer Feld 270 69120 Heidelberg Deutschland
| | - A. Stephen K. Hashmi
- Organisch-Chemisches InstitutUniversität Heidelberg Im Neuenheimer Feld 270 69120 Heidelberg Deutschland
- Chemistry Department, Faculty of ScienceKing Abdulaziz University (KAU) 21589 Jeddah Saudi-Arabien
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147
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de Castro PP, Carpanez AG, Amarante GW. Azlactone Reaction Developments. Chemistry 2016; 22:10294-318. [PMID: 27245128 DOI: 10.1002/chem.201600071] [Citation(s) in RCA: 102] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2016] [Indexed: 11/06/2022]
Abstract
Azlactones (also known as oxazolones) are heterocycles usually employed in the stereoselective synthesis of α,α-amino acids, heterocycles and natural products. The versatility of the azlactone scaffold arises from the numerous reactive sites, allowing its application in a diversity of transformations. This review aims to cover classical and recent applications of oxazolones, especially those involving stereoselective processes. After a short introduction on their structures and intrinsic reactivities, dynamic kinetic resolution (DKR) processes as well as reactions involving stereoselective formation of a new σ C-C bond, such as alkylation/allylation/arylation, aldol, ene, Michael and Mannich reactions will be exposed. Additionally, cycloadditions, Steglich rearrangement and sulfenylation reactions will also be discussed. Recent developments of the well-known Erlenmeyer azlactones will be described. For the most examples, the proposed mechanism, activation modes and/or key reaction intermediates will be exposed to rationalize both the final product and the observed stereochemistry. Finally, this review gives an overview of the synthetic utility of oxazolones.
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Affiliation(s)
- Pedro P de Castro
- Department of Chemistry, Federal University of Juiz de Fora, José Lourenço Kelmer, São Pedro, Juiz de Fora, Brazil
| | - Arthur G Carpanez
- Department of Chemistry, Federal University of Juiz de Fora, José Lourenço Kelmer, São Pedro, Juiz de Fora, Brazil
| | - Giovanni W Amarante
- Department of Chemistry, Federal University of Juiz de Fora, José Lourenço Kelmer, São Pedro, Juiz de Fora, Brazil.
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148
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Chandrasekhar D, Borra S, Nanubolu JB, Maurya RA. Visible Light Driven Photocascade Catalysis: Ru(bpy)3(PF6)2/TBHP-Mediated Synthesis of Fused β-Carbolines in Batch and Flow Microreactors. Org Lett 2016; 18:2974-7. [PMID: 27226119 DOI: 10.1021/acs.orglett.6b01321] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
1,2,3,4-Tetrahydro-β-carbolines were coupled with α-keto vinyl azides through an unprecedented visible light-Ru(bpy)3(PF6)2/TBHP mediated photocascade strategy that involves photosensitization, photoredox catalysis and [3 + 2] cycloaddition reaction. The scope and scale-up feasibility of the photocascade strategy was demonstrated by synthesizing 18 different fused β-carbolines in moderate to good yields using batch and continuous flow microreactor. This operationally simple synthetic protocol allows the formation of one C-C and two C-N new bonds in the overall transformation.
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Affiliation(s)
| | | | | | - Ram Awatar Maurya
- Chemical Science and Technology Division, CSIR-North East Institute of Science and Technology , Jorhat, Assam 785006, India
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149
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Kizu T, Uraguchi D, Ooi T. Independence from the Sequence of Single-Electron Transfer of Photoredox Process in Redox-Neutral Asymmetric Bond-Forming Reaction. J Org Chem 2016; 81:6953-8. [DOI: 10.1021/acs.joc.6b00445] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Tomohito Kizu
- Department
of Applied Chemistry, Graduate School of Engineering, Nagoya University, Nagoya 464-8602, Japan
| | - Daisuke Uraguchi
- Department
of Applied Chemistry, Graduate School of Engineering, Nagoya University, Nagoya 464-8602, Japan
| | - Takashi Ooi
- Institute of Transformative Bio-Molecules (WPI-ITbM), and Department of Applied Chemistry, Graduate School of Engineering, Nagoya University, and CREST, Japan Science and Technology Agency (JST), Nagoya 464-8602, Japan
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150
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Fava E, Millet A, Nakajima M, Loescher S, Rueping M. Reduktive Umpolung von Carbonylderivaten mittels Photoredoxkatalyse mit sichtbarem Licht: ein direkter Zugang zu vicinalen Diaminen und Aminoalkoholen über α-Aminoradikale und Ketylradikale. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201511235] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Eleonora Fava
- Institut für Organische Chemie; RWTH Aachen; Landoltweg 1 52074 Aachen Deutschland
| | - Anthony Millet
- Institut für Organische Chemie; RWTH Aachen; Landoltweg 1 52074 Aachen Deutschland
| | - Masaki Nakajima
- Institut für Organische Chemie; RWTH Aachen; Landoltweg 1 52074 Aachen Deutschland
| | - Sebastian Loescher
- Institut für Organische Chemie; RWTH Aachen; Landoltweg 1 52074 Aachen Deutschland
| | - Magnus Rueping
- Institut für Organische Chemie; RWTH Aachen; Landoltweg 1 52074 Aachen Deutschland
- KAUST Catalysis Center (KCC); King Abdullah University of Science and Technology (KAUST); Thuwal 23955-6900 Saudi Arabien
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