101
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Mao PF, Zhou LJ, Zheng AQ, Miao CB, Yang HT. Cu(OAc)2-Triggered Cascade Reaction of Malonate-Tethered Acyl Oximes with Indoles, Indole-2-alcohols, and Indole-2-carboxamides. Org Lett 2019; 21:3153-3157. [DOI: 10.1021/acs.orglett.9b00849] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Peng-Fei Mao
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Petrochemical Engineering, Changzhou University, 1 Gehu Road, Changzhou, Jiangsu 213164, China
| | - Li-Jin Zhou
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Petrochemical Engineering, Changzhou University, 1 Gehu Road, Changzhou, Jiangsu 213164, China
| | - An-Qi Zheng
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Petrochemical Engineering, Changzhou University, 1 Gehu Road, Changzhou, Jiangsu 213164, China
| | - Chun-Bao Miao
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Petrochemical Engineering, Changzhou University, 1 Gehu Road, Changzhou, Jiangsu 213164, China
| | - Hai-Tao Yang
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Petrochemical Engineering, Changzhou University, 1 Gehu Road, Changzhou, Jiangsu 213164, China
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102
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Ning Y, Mekareeya A, Babu KR, Anderson EA, Bi X. Silver-Catalyzed C- to N-Center Remote Arene Migration. ACS Catal 2019. [DOI: 10.1021/acscatal.9b00500] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Yongquan Ning
- Department of Chemistry, Northeast Normal University, Changchun 130024, China
| | - Aroonroj Mekareeya
- Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, U.K
| | - Kaki Raveendra Babu
- Department of Chemistry, Northeast Normal University, Changchun 130024, China
| | - Edward A. Anderson
- Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, U.K
| | - Xihe Bi
- Department of Chemistry, Northeast Normal University, Changchun 130024, China
- State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, China
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103
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Zhan JL, Wu MW, Wei D, Wei BY, Jiang Y, Yu W, Han B. 4-HO-TEMPO-Catalyzed Redox Annulation of Cyclopropanols with Oxime Acetates toward Pyridine Derivatives. ACS Catal 2019. [DOI: 10.1021/acscatal.9b00832] [Citation(s) in RCA: 62] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Jun-Long Zhan
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, People’s Republic of China
| | - Meng-Wei Wu
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, People’s Republic of China
| | - Dian Wei
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, People’s Republic of China
| | - Bang-Yi Wei
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, People’s Republic of China
| | - Yu Jiang
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, People’s Republic of China
| | - Wei Yu
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, People’s Republic of China
| | - Bing Han
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, People’s Republic of China
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104
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Abstract
Owing to the pervasiveness of hydroxyl groups in natural isolates, alcohol derivatives are alluring directing groups. Herein, an alcohol-derived sulfamate ester guides the light-initiated xanthylation of primary, secondary, or tertiary centers. This process enables formal directed deuteration, azidation, thiolation, and vinylation reactions.
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Affiliation(s)
- Suraj K. Ayer
- Duke University, Department of Chemistry, Box 90346, Durham, North Carolina 27708–0354, USA
| | - J. L. Roizen
- Duke University, Department of Chemistry, Box 90346, Durham, North Carolina 27708–0354, USA
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105
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Guo Q, Ren X, Lu Z. Controllable Intramolecular Unactivated C(sp3)-H Amination and Oxygenation of Carbamates. Org Lett 2019; 21:880-884. [DOI: 10.1021/acs.orglett.8b03299] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Qihang Guo
- Department of Chemistry, Zhejiang University, 866 Yuhangtang Road, Hangzhou 310058, China
| | - Xiang Ren
- Department of Chemistry, Zhejiang University, 866 Yuhangtang Road, Hangzhou 310058, China
| | - Zhan Lu
- Department of Chemistry, Zhejiang University, 866 Yuhangtang Road, Hangzhou 310058, China
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106
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Gu YR, Duan XH, Chen L, Ma ZY, Gao P, Guo LN. Iminyl Radical-Triggered Intermolecular Distal C(sp3)–H Heteroarylation via 1,5-Hydrogen-Atom Transfer (HAT) Cascade. Org Lett 2019; 21:917-920. [DOI: 10.1021/acs.orglett.8b03865] [Citation(s) in RCA: 62] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yu-Rui Gu
- Department of Chemistry, School of Science, Xi’an Key Laboratory of Sustainable Energy Material Chemistry, and MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Xi’an Jiaotong University, Xi’an 710049, China
| | - Xin-Hua Duan
- Department of Chemistry, School of Science, Xi’an Key Laboratory of Sustainable Energy Material Chemistry, and MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Xi’an Jiaotong University, Xi’an 710049, China
| | - Li Chen
- Department of Chemistry, School of Science, Xi’an Key Laboratory of Sustainable Energy Material Chemistry, and MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Xi’an Jiaotong University, Xi’an 710049, China
| | - Zhi-Yong Ma
- Department of Chemistry, School of Science, Xi’an Key Laboratory of Sustainable Energy Material Chemistry, and MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Xi’an Jiaotong University, Xi’an 710049, China
| | - Pin Gao
- Department of Chemistry, School of Science, Xi’an Key Laboratory of Sustainable Energy Material Chemistry, and MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Xi’an Jiaotong University, Xi’an 710049, China
| | - Li-Na Guo
- Department of Chemistry, School of Science, Xi’an Key Laboratory of Sustainable Energy Material Chemistry, and MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Xi’an Jiaotong University, Xi’an 710049, China
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107
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Stateman LM, Wappes EA, Nakafuku KM, Edwards KM, Nagib DA. Catalytic β C-H amination via an imidate radical relay. Chem Sci 2019; 10:2693-2699. [PMID: 30996986 PMCID: PMC6419930 DOI: 10.1039/c8sc05685d] [Citation(s) in RCA: 61] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2018] [Accepted: 01/09/2019] [Indexed: 01/03/2023] Open
Abstract
An iodine-catalyzed strategy for β C–H amination of alcohols is enabled by a chemo-, regio-, and stereo-selective H-atom transfer mechanism.
The first catalytic strategy to harness imidate radicals for C–H functionalization has been developed. This iodine-catalyzed approach enables β C–H amination of alcohols by an imidate-mediated radical relay. In contrast to our first-generation, (super)stoichiometric protocol, this catalytic method enables faster and more efficient reactivity. Furthermore, lower oxidant concentration affords broader functional group tolerance, including alkenes, alkynes, alcohols, carbonyls, and heteroarenes. Mechanistic experiments interrogating the electronic nature of the key 1,5 H-atom transfer event are included, as well as probes for chemo-, regio-, and stereo-selectivity.
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Affiliation(s)
- Leah M Stateman
- The Ohio State University , Department of Chemistry and Biochemistry , Columbus , OH 43210 , USA .
| | - Ethan A Wappes
- The Ohio State University , Department of Chemistry and Biochemistry , Columbus , OH 43210 , USA .
| | - Kohki M Nakafuku
- The Ohio State University , Department of Chemistry and Biochemistry , Columbus , OH 43210 , USA .
| | - Kara M Edwards
- The Ohio State University , Department of Chemistry and Biochemistry , Columbus , OH 43210 , USA .
| | - David A Nagib
- The Ohio State University , Department of Chemistry and Biochemistry , Columbus , OH 43210 , USA .
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108
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Wu K, Wang L, Colón‐Rodríguez S, Flechsig G, Wang T. Amidyl Radical Directed Remote Allylation of Unactivated sp
3
C−H Bonds by Organic Photoredox Catalysis. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201811004] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Kui Wu
- Department of ChemistryUniversity at Albany, State University of New York 1400 Washington Avenue Albany NY 12222 USA
| | - Lushun Wang
- Department of ChemistryUniversity at Albany, State University of New York 1400 Washington Avenue Albany NY 12222 USA
| | - Sonivette Colón‐Rodríguez
- Department of ChemistryUniversity at Albany, State University of New York 1400 Washington Avenue Albany NY 12222 USA
| | - Gerd‐Uwe Flechsig
- Department of ChemistryUniversity at Albany, State University of New York 1400 Washington Avenue Albany NY 12222 USA
| | - Ting Wang
- Department of ChemistryUniversity at Albany, State University of New York 1400 Washington Avenue Albany NY 12222 USA
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109
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Wu K, Wang L, Colón‐Rodríguez S, Flechsig G, Wang T. Amidyl Radical Directed Remote Allylation of Unactivated sp
3
C−H Bonds by Organic Photoredox Catalysis. Angew Chem Int Ed Engl 2019; 58:1774-1778. [DOI: 10.1002/anie.201811004] [Citation(s) in RCA: 73] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2018] [Revised: 11/21/2018] [Indexed: 11/08/2022]
Affiliation(s)
- Kui Wu
- Department of ChemistryUniversity at Albany, State University of New York 1400 Washington Avenue Albany NY 12222 USA
| | - Lushun Wang
- Department of ChemistryUniversity at Albany, State University of New York 1400 Washington Avenue Albany NY 12222 USA
| | - Sonivette Colón‐Rodríguez
- Department of ChemistryUniversity at Albany, State University of New York 1400 Washington Avenue Albany NY 12222 USA
| | - Gerd‐Uwe Flechsig
- Department of ChemistryUniversity at Albany, State University of New York 1400 Washington Avenue Albany NY 12222 USA
| | - Ting Wang
- Department of ChemistryUniversity at Albany, State University of New York 1400 Washington Avenue Albany NY 12222 USA
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110
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Yin Z, Zhang Z, Zhang Y, Dixneuf PH, Wu XF. Carbonylation of tertiary carbon radicals: synthesis of lactams. Chem Commun (Camb) 2019; 55:4655-4658. [DOI: 10.1039/c9cc02112d] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Herein, we disclose an interesting iron-catalyzed approach for the carbonylation of a tertiary carbon radical.
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Affiliation(s)
- Zhiping Yin
- Leibniz-Institut für Katalyse e. V. an der Universität Rostock
- 18059 Rostock
- Germany
| | - Zhuan Zhang
- Catalyse et Organométalliques
- Institut Sciences Chimiques de Rennes
- UMR 6226-CNRS-Université de Rennes
- 35042 Rennes
- France
| | - Youcan Zhang
- Leibniz-Institut für Katalyse e. V. an der Universität Rostock
- 18059 Rostock
- Germany
| | - Pierre H. Dixneuf
- Catalyse et Organométalliques
- Institut Sciences Chimiques de Rennes
- UMR 6226-CNRS-Université de Rennes
- 35042 Rennes
- France
| | - Xiao-Feng Wu
- Leibniz-Institut für Katalyse e. V. an der Universität Rostock
- 18059 Rostock
- Germany
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111
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Zhang W, Zheng HL, Liu Y, Yu A, Yang C, Li X, Cheng JP. Catalyst-free amination of α-cyanoarylacetates enabled by single-electron transfer. Org Chem Front 2019. [DOI: 10.1039/c9qo00346k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
A radical benzylic amination of α-cyanoarylacetates without the assistance of any transition-metal catalysts or external photosensitizers was realized.
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Affiliation(s)
- Wei Zhang
- State Key Laboratory of Elemento-organic Chemistry
- College of Chemistry
- Nankai University
- Tianjin 300071
- China
| | - Han-Liang Zheng
- State Key Laboratory of Elemento-organic Chemistry
- College of Chemistry
- Nankai University
- Tianjin 300071
- China
| | - Yang Liu
- State Key Laboratory of Elemento-organic Chemistry
- College of Chemistry
- Nankai University
- Tianjin 300071
- China
| | - Ao Yu
- Central Laboratory
- College of Chemistry
- Nankai University
- Tianjin 300071
- China
| | - Chen Yang
- State Key Laboratory of Elemento-organic Chemistry
- College of Chemistry
- Nankai University
- Tianjin 300071
- China
| | - Xin Li
- State Key Laboratory of Elemento-organic Chemistry
- College of Chemistry
- Nankai University
- Tianjin 300071
- China
| | - Jin-Pei Cheng
- State Key Laboratory of Elemento-organic Chemistry
- College of Chemistry
- Nankai University
- Tianjin 300071
- China
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112
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Wang Y, Ding J, Zhao J, Sun W, Lian C, Chen C, Zhu B. Iminyl radical-promoted imino sulfonylation, imino cyanogenation and imino thiocyanation of γ,δ-unsaturated oxime esters: synthesis of versatile functionalized pyrrolines. Org Chem Front 2019. [DOI: 10.1039/c9qo00421a] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
We reported an iminyl radical-promoted imino-functionalization of γ,δ-unsaturated oxime esters to synthesize versatile functionalized pyrrolines.
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Affiliation(s)
- Yuebo Wang
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules
- MOE Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry
- College of Chemistry
- Tianjin Normal University
- Tianjin 300387
| | - Jie Ding
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules
- MOE Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry
- College of Chemistry
- Tianjin Normal University
- Tianjin 300387
| | - Jinghui Zhao
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules
- MOE Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry
- College of Chemistry
- Tianjin Normal University
- Tianjin 300387
| | - Wan Sun
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules
- MOE Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry
- College of Chemistry
- Tianjin Normal University
- Tianjin 300387
| | - Chang Lian
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules
- MOE Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry
- College of Chemistry
- Tianjin Normal University
- Tianjin 300387
| | - Chen Chen
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules
- MOE Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry
- College of Chemistry
- Tianjin Normal University
- Tianjin 300387
| | - Bolin Zhu
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules
- MOE Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry
- College of Chemistry
- Tianjin Normal University
- Tianjin 300387
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113
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Yin W, Wang X. Recent advances in iminyl radical-mediated catalytic cyclizations and ring-opening reactions. NEW J CHEM 2019. [DOI: 10.1039/c8nj06165c] [Citation(s) in RCA: 74] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Iminyl radicals have emerged as versatile synthons for N-heterocycle constructions and ring-opening reactions.
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Affiliation(s)
- Wenqing Yin
- College of Chemistry and Materials Science
- Guangxi Teachers Education University
- Nanning 530001
- P. R. China
| | - Xuelian Wang
- College of Chemistry and Materials Science
- Guangxi Teachers Education University
- Nanning 530001
- P. R. China
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114
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Wang P, Zhao B, Yuan Y, Shi Z. Radical-induced ring-opening and reconstruction of cyclobutanone oxime esters. Chem Commun (Camb) 2019; 55:1971-1974. [DOI: 10.1039/c8cc10109d] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The first example of intramolecular ring-opening and reconstruction of cyclobutanone oxime esters via selective C–C bond cleavage leading to the synthesis of 3,4-dihydronaphthalene-2-carbonitriles in the presence of a cheap copper catalyst has been reported.
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Affiliation(s)
- Panpan Wang
- College of Chemistry and Chemical Engineering
- Yangzhou University
- Yangzhou 225002
- China
- State Key Laboratory of Coordination Chemistry
| | - Binlin Zhao
- State Key Laboratory of Coordination Chemistry
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing
- China
| | - Yu Yuan
- College of Chemistry and Chemical Engineering
- Yangzhou University
- Yangzhou 225002
- China
| | - Zhuangzhi Shi
- State Key Laboratory of Coordination Chemistry
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing
- China
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115
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Liu S, Wang R, Zhu B, Guan W, Liang F. Photo- and dioxygen-enabled radical C(sp3)–N(sp2) cross-coupling between guanidines and perfluoroalkyl iodides. Org Biomol Chem 2019; 17:8695-8700. [DOI: 10.1039/c9ob01520e] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The utilization of visible light and dioxygen (air) as green and sustainable mediators in photocatalyzed synthetic chemistry is demonstrated.
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Affiliation(s)
- Shulin Liu
- College of Chemistry
- Liaoning University
- Shenyang 110036
- China
| | - Rui Wang
- Institute of Petrochemical Technology
- Jilin Institute of Chemical Technology
- Jilin 132022
- China
| | - Bo Zhu
- Faculty of Chemistry
- Northeast Normal University
- Changchun 130024
- China
| | - Wei Guan
- Faculty of Chemistry
- Northeast Normal University
- Changchun 130024
- China
| | - Fushun Liang
- College of Chemistry
- Liaoning University
- Shenyang 110036
- China
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116
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Wu S, Wu X, Wang D, Zhu C. Regioselective Vinylation of Remote Unactivated C(sp3)−H Bonds: Access to Complex Fluoroalkylated Alkenes. Angew Chem Int Ed Engl 2018; 58:1499-1503. [DOI: 10.1002/anie.201812927] [Citation(s) in RCA: 67] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2018] [Revised: 12/03/2018] [Indexed: 01/02/2023]
Affiliation(s)
- Shuo 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
| | - 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
| | - Dongping Wang
- 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
| | - Chen Zhu
- 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
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117
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Wu S, Wu X, Wang D, Zhu C. Regioselective Vinylation of Remote Unactivated C(sp3)−H Bonds: Access to Complex Fluoroalkylated Alkenes. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201812927] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Shuo 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
| | - 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
| | - Dongping Wang
- 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
| | - Chen Zhu
- 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
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118
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Lv XL, Wang C, Wang QL, Shu W. Rapid Synthesis of γ-Arylated Carbonyls Enabled by the Merge of Copper- and Photocatalytic Radical Relay Alkylarylation of Alkenes. Org Lett 2018; 21:56-59. [PMID: 30543433 DOI: 10.1021/acs.orglett.8b03485] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The development of mild and practical methods for the γ-arylation of carbonyl compounds is an ongoing challenge in organic synthesis. The first formal γ-arylation of carbonyl compounds via radical relay cross-coupling of α-bromocarbonyl precursors with boronic acids in the presence of alkenes is reported. This directing-group-free protocol allows for the rapid and straightforward access to a wide range of γ-arylated esters, ketones, and amides under ambient conditions with excellent functional group tolerance.
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Affiliation(s)
- Xu-Lu Lv
- Department of Chemistry and Shenzhen Grubbs Institute , Southern University of Science and Technology , 518055 Shenzhen , China
| | - Cong Wang
- Department of Chemistry and Shenzhen Grubbs Institute , Southern University of Science and Technology , 518055 Shenzhen , China
| | - Qiao-Li Wang
- Department of Chemistry and Shenzhen Grubbs Institute , Southern University of Science and Technology , 518055 Shenzhen , China
| | - Wei Shu
- Department of Chemistry and Shenzhen Grubbs Institute , Southern University of Science and Technology , 518055 Shenzhen , China.,State Key Laboratory of Elemento-Organic Chemistry , Nankai University , 300071 Tianjin , China
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119
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Chen Q, Zhang S, Zhang T, He K, Yuan Y, Jia X. Radical C−H Bond Oxidation Initiated Intramolecular Cyclization of Glycine Esters: Construction of Dihydroquinoline Skeletons. ASIAN J ORG CHEM 2018. [DOI: 10.1002/ajoc.201800596] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Qian Chen
- School of Chemistry & Chemical Engineering; Yangzhou University; Yangzhou, Jiangsu 225002 China
| | - Shuwei Zhang
- School of Chemistry & Chemical Engineering; Yangzhou University; Yangzhou, Jiangsu 225002 China
| | - Ting Zhang
- School of Chemistry & Chemical Engineering; Yangzhou University; Yangzhou, Jiangsu 225002 China
| | - Kaixuan He
- School of Chemistry & Chemical Engineering; Yangzhou University; Yangzhou, Jiangsu 225002 China
| | - Yu Yuan
- School of Chemistry & Chemical Engineering; Yangzhou University; Yangzhou, Jiangsu 225002 China
| | - Xiaodong Jia
- School of Chemistry & Chemical Engineering; Yangzhou University; Yangzhou, Jiangsu 225002 China
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120
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Zhang W, Zou Z, Wang Y, Wang Y, Liang Y, Wu Z, Zheng Y, Pan Y. Leaving Group Assisted Strategy for Photoinduced Fluoroalkylations Using N
-Hydroxybenzimidoyl Chloride Esters. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201812192] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Weigang Zhang
- State Key Laboratory of Coordination Chemistry; Jiangsu Key Laboratory of Advanced Organic Materials; School of Chemistry and Chemical Engineering; Nanjing University; Nanjing 210023 China
| | - Zhenlei Zou
- State Key Laboratory of Coordination Chemistry; Jiangsu Key Laboratory of Advanced Organic Materials; School of Chemistry and Chemical Engineering; Nanjing University; Nanjing 210023 China
| | - Yuanheng Wang
- State Key Laboratory of Coordination Chemistry; Jiangsu Key Laboratory of Advanced Organic Materials; School of Chemistry and Chemical Engineering; Nanjing University; Nanjing 210023 China
| | - Yi Wang
- State Key Laboratory of Coordination Chemistry; Jiangsu Key Laboratory of Advanced Organic Materials; School of Chemistry and Chemical Engineering; Nanjing University; Nanjing 210023 China
| | - Yong Liang
- State Key Laboratory of Coordination Chemistry; Jiangsu Key Laboratory of Advanced Organic Materials; School of Chemistry and Chemical Engineering; Nanjing University; Nanjing 210023 China
| | - Zhengguang Wu
- State Key Laboratory of Coordination Chemistry; Jiangsu Key Laboratory of Advanced Organic Materials; School of Chemistry and Chemical Engineering; Nanjing University; Nanjing 210023 China
| | - Youxuan Zheng
- State Key Laboratory of Coordination Chemistry; Jiangsu Key Laboratory of Advanced Organic Materials; School of Chemistry and Chemical Engineering; Nanjing University; Nanjing 210023 China
| | - Yi Pan
- State Key Laboratory of Coordination Chemistry; Jiangsu Key Laboratory of Advanced Organic Materials; School of Chemistry and Chemical Engineering; Nanjing University; Nanjing 210023 China
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121
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Zhang W, Zou Z, Wang Y, Wang Y, Liang Y, Wu Z, Zheng Y, Pan Y. Leaving Group Assisted Strategy for Photoinduced Fluoroalkylations Using N-Hydroxybenzimidoyl Chloride Esters. Angew Chem Int Ed Engl 2018; 58:624-627. [PMID: 30444559 DOI: 10.1002/anie.201812192] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2018] [Indexed: 01/07/2023]
Abstract
Redox-active esters (RAEs) as alkyl radical precursors have been extensively developed for C-C bond formations. However, the analogous transformations of fluoroalkyl radicals from the corresponding acid or ester precursors remain challenging because of the high oxidation potential of the fluoroalkyl carboxylate anions. The newly developed N-hydroxybenzimidoylchloride (NHBC) ester provides a general leaving group assisted strategy to generate a portfolio of fluoroalkyl radicals, and can be successfully applied in photoinduced decarboxylative hydrofluoroalkylation and heteroarylation of unactivated olefins. In addition, DFT calculations revealed that the NHBC ester proceeds by the fluorocarbon radical pathway, whereas other well-known RAEs proceed by the nitrogen radical pathway.
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Affiliation(s)
- Weigang Zhang
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China
| | - Zhenlei Zou
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China
| | - Yuanheng Wang
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China
| | - Yi Wang
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China
| | - Yong Liang
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China
| | - Zhengguang Wu
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China
| | - Youxuan Zheng
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China
| | - Yi Pan
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China
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122
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Kim I, Park B, Kang G, Kim J, Jung H, Lee H, Baik M, Hong S. Visible‐Light‐Induced Pyridylation of Remote C(sp
3
)−H Bonds by Radical Translocation of N‐Alkoxypyridinium Salts. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201809879] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Inwon Kim
- Department of ChemistryKorea Advanced Institute of Science and Technology Daejeon 34141 Korea
- Center for Catalytic Hydrocarbon Functionalization Institute for Basic Science (IBS) Daejeon 34141 Korea
| | - Bohyun Park
- Department of ChemistryKorea Advanced Institute of Science and Technology Daejeon 34141 Korea
- Center for Catalytic Hydrocarbon Functionalization Institute for Basic Science (IBS) Daejeon 34141 Korea
| | - Gyumin Kang
- Department of ChemistryKorea Advanced Institute of Science and Technology Daejeon 34141 Korea
- Center for Catalytic Hydrocarbon Functionalization Institute for Basic Science (IBS) Daejeon 34141 Korea
| | - Jiyun Kim
- Department of ChemistryKorea Advanced Institute of Science and Technology Daejeon 34141 Korea
- Center for Catalytic Hydrocarbon Functionalization Institute for Basic Science (IBS) Daejeon 34141 Korea
| | - Hoimin Jung
- Department of ChemistryKorea Advanced Institute of Science and Technology Daejeon 34141 Korea
- Center for Catalytic Hydrocarbon Functionalization Institute for Basic Science (IBS) Daejeon 34141 Korea
| | - Hyeonyeong Lee
- Department of ChemistryKorea Advanced Institute of Science and Technology Daejeon 34141 Korea
- Center for Catalytic Hydrocarbon Functionalization Institute for Basic Science (IBS) Daejeon 34141 Korea
| | - Mu‐Hyun Baik
- Department of ChemistryKorea Advanced Institute of Science and Technology Daejeon 34141 Korea
- Center for Catalytic Hydrocarbon Functionalization Institute for Basic Science (IBS) Daejeon 34141 Korea
| | - Sungwoo Hong
- Department of ChemistryKorea Advanced Institute of Science and Technology Daejeon 34141 Korea
- Center for Catalytic Hydrocarbon Functionalization Institute for Basic Science (IBS) Daejeon 34141 Korea
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123
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Kim I, Park B, Kang G, Kim J, Jung H, Lee H, Baik M, Hong S. Visible‐Light‐Induced Pyridylation of Remote C(sp
3
)−H Bonds by Radical Translocation of N‐Alkoxypyridinium Salts. Angew Chem Int Ed Engl 2018; 57:15517-15522. [DOI: 10.1002/anie.201809879] [Citation(s) in RCA: 111] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2018] [Revised: 10/02/2018] [Indexed: 01/07/2023]
Affiliation(s)
- Inwon Kim
- Department of ChemistryKorea Advanced Institute of Science and Technology Daejeon 34141 Korea
- Center for Catalytic Hydrocarbon Functionalization Institute for Basic Science (IBS) Daejeon 34141 Korea
| | - Bohyun Park
- Department of ChemistryKorea Advanced Institute of Science and Technology Daejeon 34141 Korea
- Center for Catalytic Hydrocarbon Functionalization Institute for Basic Science (IBS) Daejeon 34141 Korea
| | - Gyumin Kang
- Department of ChemistryKorea Advanced Institute of Science and Technology Daejeon 34141 Korea
- Center for Catalytic Hydrocarbon Functionalization Institute for Basic Science (IBS) Daejeon 34141 Korea
| | - Jiyun Kim
- Department of ChemistryKorea Advanced Institute of Science and Technology Daejeon 34141 Korea
- Center for Catalytic Hydrocarbon Functionalization Institute for Basic Science (IBS) Daejeon 34141 Korea
| | - Hoimin Jung
- Department of ChemistryKorea Advanced Institute of Science and Technology Daejeon 34141 Korea
- Center for Catalytic Hydrocarbon Functionalization Institute for Basic Science (IBS) Daejeon 34141 Korea
| | - Hyeonyeong Lee
- Department of ChemistryKorea Advanced Institute of Science and Technology Daejeon 34141 Korea
- Center for Catalytic Hydrocarbon Functionalization Institute for Basic Science (IBS) Daejeon 34141 Korea
| | - Mu‐Hyun Baik
- Department of ChemistryKorea Advanced Institute of Science and Technology Daejeon 34141 Korea
- Center for Catalytic Hydrocarbon Functionalization Institute for Basic Science (IBS) Daejeon 34141 Korea
| | - Sungwoo Hong
- Department of ChemistryKorea Advanced Institute of Science and Technology Daejeon 34141 Korea
- Center for Catalytic Hydrocarbon Functionalization Institute for Basic Science (IBS) Daejeon 34141 Korea
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124
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Zhang Z, Stateman LM, Nagib DA. δ C-H (hetero)arylation via Cu-catalyzed radical relay. Chem Sci 2018; 10:1207-1211. [PMID: 30774920 PMCID: PMC6349054 DOI: 10.1039/c8sc04366c] [Citation(s) in RCA: 113] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2018] [Accepted: 11/09/2018] [Indexed: 12/23/2022] Open
Abstract
A radical relay strategy has been developed to enable selective δ C–H arylation. The approach employs a chiral copper catalyst, which serves the dual roles of generating an N-centered radical to promote intramolecular H-atom transfer, and then intercepting a distal C-centered radical for C–C bond formation with (hetero)aryl boronic acids.
A Cu-catalyzed strategy has been developed that harnesses a radical relay mechanism to intercept a distal C-centered radical for C–C bond formation. This approach enables selective δ C–H (hetero)arylation of sulfonamides via intramolecular hydrogen atom transfer (HAT) by an N-centered radical. The radical relay is both initiated and terminated by a Cu catalyst, which enables incorporation of arenes and heteroarenes by cross-coupling with boronic acids. The broad scope and utility of this catalytic method for δ C–H arylation is shown, along with mechanistic probes for selectivity of the HAT mechanism. A catalytic, asymmetric variant is also presented, as well as a method for accessing 1,1-diaryl-pyrrolidines via iterative δ C–H functionalizations.
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Affiliation(s)
- Zuxiao Zhang
- The Ohio State University , Department of Chemistry and Biochemistry , Columbus , OH 43210 , USA .
| | - Leah M Stateman
- The Ohio State University , Department of Chemistry and Biochemistry , Columbus , OH 43210 , USA .
| | - David A Nagib
- The Ohio State University , Department of Chemistry and Biochemistry , Columbus , OH 43210 , USA .
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125
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Ma ZY, Guo LN, Gu YR, Chen L, Duan XH. Iminyl Radical-Mediated Controlled Hydroxyalkylation of Remote C(sp
3
)-H Bond via Tandem 1,5-HAT and Difunctionalization of Aryl Alkenes. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201801198] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Zhi-Yong Ma
- Department of Chemistry; School of Science and MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter; Xi'an Jiaotong University; Xi'an 710049 People's Republic of China
| | - Li-Na Guo
- Department of Chemistry; School of Science and MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter; Xi'an Jiaotong University; Xi'an 710049 People's Republic of China
| | - Yu-Rui Gu
- Department of Chemistry; School of Science and MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter; Xi'an Jiaotong University; Xi'an 710049 People's Republic of China
| | - Li Chen
- Department of Chemistry; School of Science and MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter; Xi'an Jiaotong University; Xi'an 710049 People's Republic of China
| | - Xin-Hua Duan
- Department of Chemistry; School of Science and MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter; Xi'an Jiaotong University; Xi'an 710049 People's Republic of China
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126
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Na CG, Alexanian EJ. A General Approach to Site-Specific, Intramolecular C-H Functionalization Using Dithiocarbamates. Angew Chem Int Ed Engl 2018; 57:13106-13109. [PMID: 30085389 PMCID: PMC6249686 DOI: 10.1002/anie.201806963] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2018] [Revised: 07/17/2018] [Indexed: 01/11/2023]
Abstract
Intramolecular hydrogen atom transfer is an established approach for the site-specific functionalization of unactivated, aliphatic C-H bonds. Transformations using this strategy typically require unstable intermediates formed using strong oxidants and have mainly targeted C-H halogenations or intramolecular aminations. Herein, we report a site-specific C-H functionalization that significantly increases the synthetic scope and convergency of reactions proceeding via intramolecular hydrogen atom transfer. Stable, isolable N-dithiocarbamates are used as precursors to amidyl radicals formed via either light or radical initiation to efficiently deliver highly versatile alkyl dithiocarbamates across a wide range of complex structures.
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Affiliation(s)
- Christina G. Na
- Department of Chemistry The University of North Carolina at Chapel Hill Chapel Hill, NC 27599 (USA)
| | - Erik J. Alexanian
- Department of Chemistry The University of North Carolina at Chapel Hill Chapel Hill, NC 27599 (USA)
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127
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Morcillo SP, Dauncey EM, Kim JH, Douglas JJ, Sheikh NS, Leonori D. Photoinduced Remote Functionalization of Amides and Amines Using Electrophilic Nitrogen Radicals. Angew Chem Int Ed Engl 2018; 57:12945-12949. [PMID: 30074300 PMCID: PMC6221136 DOI: 10.1002/anie.201807941] [Citation(s) in RCA: 183] [Impact Index Per Article: 30.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2018] [Indexed: 01/29/2023]
Abstract
The selective functionalization of C(sp3 )-H bonds at distal positions to functional groups is a challenging task in synthetic chemistry. Reported here is a photoinduced radical cascade strategy for the divergent functionalization of amides and protected amines. The process is based on the oxidative generation of electrophilic amidyl radicals and their subsequent transposition by 1,5-H-atom transfer, resulting in remote fluorination, chlorination and, for the first time, thioetherification, cyanation, and alkynylation. The process is tolerant of most common functional groups and delivers useful building blocks that can be further elaborated. The utility of this strategy is demonstrated through the late-stage functionalization of amino acids and a dipeptide.
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Affiliation(s)
- Sara P. Morcillo
- School of ChemistryUniversity of ManchesterOxford RoadManchesterM13 9PLUK
| | | | - Ji Hye Kim
- School of ChemistryUniversity of ManchesterOxford RoadManchesterM13 9PLUK
| | - James J. Douglas
- Early Chemical DevelopmentPharmaceutical SciencesIMED Biotech UnitAstraZenecaMacclesfieldSK10 2NAUK
| | - Nadeem S. Sheikh
- Department of ChemistryFaculty of ScienceKing Faisal UniversityP.O. Box 380Al-Ahsa31982Saudi Arabia
| | - Daniele Leonori
- School of ChemistryUniversity of ManchesterOxford RoadManchesterM13 9PLUK
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128
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Zhao B, Tan H, Chen C, Jiao N, Shi Z. Photoinduced C-C Bond Cleavage and Oxidation of Cycloketoxime Esters. CHINESE J CHEM 2018. [DOI: 10.1002/cjoc.201800206] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Binlin Zhao
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering; Nanjing University; Nanjing Jiangsu 210093 China
| | - Hui Tan
- State Key Laboratory of Natural and Biomimetic Drugs, School of Phar-maceutical Sciences; Peking University; Xue Yuan Road 38, Beijing 100191 China
| | - Cheng Chen
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering; Nanjing University; Nanjing Jiangsu 210093 China
| | - Ning Jiao
- State Key Laboratory of Natural and Biomimetic Drugs, School of Phar-maceutical Sciences; Peking University; Xue Yuan Road 38, Beijing 100191 China
| | - Zhuangzhi Shi
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering; Nanjing University; Nanjing Jiangsu 210093 China
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129
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Abstract
The first catalytic strategy to harness imidate radicals has been developed. This approach enables alkene difunctionalization of allyl alcohols by photocatalytic reduction of their oxime imidates. The ensuing imidate radicals undergo consecutive intra- and intermolecular reactions to afford (i) hydroamination, (ii) aminoalkylation, or (iii) aminoarylation, via three distinct radical mechanisms. The broad scope and utility of this catalytic method for imidate radical reactivity is presented, along with comparisons to other N-centered radicals and complementary, closed-shell imidate pathways.
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Affiliation(s)
- Kohki M Nakafuku
- Department of Chemistry and Biochemistry , The Ohio State University , Columbus , Ohio 43210 , United States
| | - Stacy C Fosu
- Department of Chemistry and Biochemistry , The Ohio State University , Columbus , Ohio 43210 , United States
| | - David A Nagib
- Department of Chemistry and Biochemistry , The Ohio State University , Columbus , Ohio 43210 , United States
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130
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Na CG, Alexanian EJ. A General Approach to Site‐Specific, Intramolecular C−H Functionalization Using Dithiocarbamates. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201806963] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Christina G. Na
- Department of ChemistryThe University of North Carolina at Chapel Hill Chapel Hill NC 27599 USA
| | - Erik J. Alexanian
- Department of ChemistryThe University of North Carolina at Chapel Hill Chapel Hill NC 27599 USA
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131
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Morcillo SP, Dauncey EM, Kim JH, Douglas JJ, Sheikh NS, Leonori D. Photoinduced Remote Functionalization of Amides and Amines Using Electrophilic Nitrogen Radicals. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201807941] [Citation(s) in RCA: 58] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Sara P. Morcillo
- School of Chemistry; University of Manchester; Oxford Road Manchester M13 9PL UK
| | - Elizabeth M. Dauncey
- School of Chemistry; University of Manchester; Oxford Road Manchester M13 9PL UK
| | - Ji Hye Kim
- School of Chemistry; University of Manchester; Oxford Road Manchester M13 9PL UK
| | - James J. Douglas
- Early Chemical Development; Pharmaceutical Sciences; IMED Biotech Unit; AstraZeneca; Macclesfield SK10 2NA UK
| | - Nadeem S. Sheikh
- Department of Chemistry; Faculty of Science; King Faisal University; P.O. Box 380 Al-Ahsa 31982 Saudi Arabia
| | - Daniele Leonori
- School of Chemistry; University of Manchester; Oxford Road Manchester M13 9PL UK
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132
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Shen X, Zhao JJ, Yu S. Photoredox-Catalyzed Intermolecular Remote C–H and C–C Vinylation via Iminyl Radicals. Org Lett 2018; 20:5523-5527. [DOI: 10.1021/acs.orglett.8b02540] [Citation(s) in RCA: 106] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Xu Shen
- State Key Laboratory of Analytical Chemistry for Life Science, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Jia-Jia Zhao
- State Key Laboratory of Analytical Chemistry for Life Science, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Shouyun Yu
- State Key Laboratory of Analytical Chemistry for Life Science, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
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133
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Metal-free alcohol-directed regioselective heteroarylation of remote unactivated C(sp 3)-H bonds. Nat Commun 2018; 9:3343. [PMID: 30131495 PMCID: PMC6104081 DOI: 10.1038/s41467-018-05522-9] [Citation(s) in RCA: 122] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2018] [Accepted: 07/10/2018] [Indexed: 12/29/2022] Open
Abstract
Construction of C–C bonds via alkoxy radical-mediated remote C(sp3)–H functionalization is largely unexplored, as it is a formidable challenge to directly generate alkoxy radicals from alcohols due to the high bond dissociation energy (BDE) of O–H bonds. Disclosed herein is a practical and elusive metal-free alcohol-directed heteroarylation of remote unactivated C(sp3)–H bonds. Phenyliodine bis(trifluoroacetate) (PIFA) is used as the only reagent to enable the coupling of alcohols and heteroaryls. Alkoxy radicals are readily generated from free alcohols under the irradiation of visible light, which trigger the regioselective hydrogen-atom transfer (HAT). A wide range of functional groups are compatible with the mild reaction conditions. Two unactivated C–H bonds are cleaved and one new C–C bond is constructed during the reaction. This protocol provides an efficient strategy for the late-stage functionalization of alcohols and heteroaryls. Direct remote C–H functionalization of aliphatic alcohols via alkoxy radicals is largely unexplored. Here, the authors report the C(sp3)-heteroaryl bond formation in aliphatic alcohols mediated by alkoxy radicals formed with a hypervalent iodine reagent.
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134
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Kumar Y, Jaiswal Y, Kumar A. Visible-Light-Mediated Remote γ-C(sp3)–H Functionalization of Alkylimidates: Synthesis of 4-Iodo-3,4-dihydropyrrole Derivatives. Org Lett 2018; 20:4964-4969. [DOI: 10.1021/acs.orglett.8b02022] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Yogesh Kumar
- Department of Chemistry, Indian Institute of Technology Patna, Bihta 801106, Bihar, India
| | - Yogesh Jaiswal
- Department of Chemistry, Indian Institute of Technology Patna, Bihta 801106, Bihar, India
| | - Amit Kumar
- Department of Chemistry, Indian Institute of Technology Patna, Bihta 801106, Bihar, India
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135
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Zhao Y, Lv Y, Xia W. Synthesis of Cyclic Compounds via Photoinduced Radical Cyclization Cascade of C=C bonds. CHEM REC 2018; 19:424-439. [DOI: 10.1002/tcr.201800050] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2018] [Accepted: 06/29/2018] [Indexed: 01/24/2023]
Affiliation(s)
- Yating Zhao
- College of Chemical and Material EngineeringQuzhou University Quzhou Zhejiang 324000 China
- State Key Lab of Urban Water Resource and EnvironmentSchool of ScienceHarbin Institute of Technology (Shenzhen) Shenzhen Guangzhou 518055 China
| | - Yanwen Lv
- College of Chemical and Material EngineeringQuzhou University Quzhou Zhejiang 324000 China
| | - Wujiong Xia
- State Key Lab of Urban Water Resource and EnvironmentSchool of ScienceHarbin Institute of Technology (Shenzhen) Shenzhen Guangzhou 518055 China
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136
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Yao S, Zhang K, Zhou QQ, Zhao Y, Shi DQ, Xiao WJ. Photoredox-promoted alkyl radical addition/semipinacol rearrangement sequences of alkenylcyclobutanols: rapid access to cyclic ketones. Chem Commun (Camb) 2018; 54:8096-8099. [PMID: 29971273 DOI: 10.1039/c8cc04503h] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Two photo-catalytic tandem alkyl radical addition/semipinacol rearrangement reactions of cycloalkanol-substituted styrenes with N-acyloxyphthalimides and O-acyl oximes have been documented. These protocols provide efficient access to functionalized cyclic ketones, and feature mild conditions (i.e., visible light irradiation, redox neutral and room temperature), broad substrate scope and excellent functional group tolerance.
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Affiliation(s)
- Sheng Yao
- 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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137
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Davies J, Morcillo SP, Douglas JJ, Leonori D. Hydroxylamine Derivatives as Nitrogen-Radical Precursors in Visible-Light Photochemistry. Chemistry 2018; 24:12154-12163. [PMID: 29787627 DOI: 10.1002/chem.201801655] [Citation(s) in RCA: 195] [Impact Index Per Article: 32.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2018] [Indexed: 11/08/2022]
Abstract
In recent years, hydroxylamines derivatives have been exploited as nitrogen-radical precursors in visible-light photochemistry. Their ability to serve as electrophores in redox chemistry has propelled the development of many novel transformations. Fundamental mechanistic aspects as well as the importance in the preparation of nitrogen-containing molecules will be highlighted.
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Affiliation(s)
- Jacob Davies
- School of Chemistry, University of Manchester, Oxford Road, M13 9PL, Manchester, UK
| | - Sara P Morcillo
- School of Chemistry, University of Manchester, Oxford Road, M13 9PL, Manchester, UK
| | - James J Douglas
- Early Chemical Development, Pharmaceutical Sciences, IMED Biotech Unit, AstraZeneca, Macclesfield, SK10 2NA, UK
| | - Daniele Leonori
- School of Chemistry, University of Manchester, Oxford Road, M13 9PL, Manchester, UK
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138
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Shu W, Merino E, Nevado C. Visible Light Mediated, Redox Neutral Remote 1,6-Difunctionalizations of Alkenes. ACS Catal 2018. [DOI: 10.1021/acscatal.8b00707] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Wei Shu
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
| | - Estíbaliz Merino
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
| | - Cristina Nevado
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
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139
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Wappes EA, Vanitcha A, Nagib DA. β C-H di-halogenation via iterative hydrogen atom transfer. Chem Sci 2018; 9:4500-4504. [PMID: 29896392 PMCID: PMC5958344 DOI: 10.1039/c8sc01214h] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2018] [Accepted: 04/19/2018] [Indexed: 12/31/2022] Open
Abstract
A radical relay strategy for mono- and di-halogenation (iodination, bromination, and chlorination) of sp3 C-H bonds has been developed. This first example of β C-H di-halogenation is achieved through sequential C-H abstraction by iterative, hydrogen atom transfer (HAT). A double C-H functionalization is enabled by in situ generated imidate radicals, which facilitate selective N˙ to C˙ radical translocation and tunable C-X termination. The versatile, geminal di-iodide products are further elaborated to β ketones and vinyl iodides. Mechanistic experiments explain the unique di-functionalization selectivity of this iterative HAT pathway, wherein the second C-H iodination is twice as fast as the first.
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Affiliation(s)
- Ethan A Wappes
- The Ohio State University , Department of Chemistry and Biochemistry , Columbus , OH 43210 , USA .
| | - Avassaya Vanitcha
- The Ohio State University , Department of Chemistry and Biochemistry , Columbus , OH 43210 , USA .
| | - David A Nagib
- The Ohio State University , Department of Chemistry and Biochemistry , Columbus , OH 43210 , USA .
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140
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Wang H, Zhang D, Bolm C. Sulfoximidations of Benzylic C−H bonds by Photocatalysis. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201801660] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Han Wang
- Institute of Organic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
| | - Duo Zhang
- Institute of Organic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
| | - Carsten Bolm
- Institute of Organic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
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141
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Wang H, Zhang D, Bolm C. Sulfoximidations of Benzylic C−H bonds by Photocatalysis. Angew Chem Int Ed Engl 2018; 57:5863-5866. [DOI: 10.1002/anie.201801660] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2018] [Revised: 03/13/2018] [Indexed: 01/01/2023]
Affiliation(s)
- Han Wang
- Institute of Organic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
| | - Duo Zhang
- Institute of Organic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
| | - Carsten Bolm
- Institute of Organic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
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142
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Access to Amidines and Arylbenzimidazoles: Zinc-Promoted Rearrangement of Oxime Acetates. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201701490] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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143
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Stateman LM, Nakafuku KM, Nagib DA. Remote C-H Functionalization via Selective Hydrogen Atom Transfer. SYNTHESIS-STUTTGART 2018; 50:1569-1586. [PMID: 29755145 PMCID: PMC5940016 DOI: 10.1055/s-0036-1591930] [Citation(s) in RCA: 289] [Impact Index Per Article: 48.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The selective functionalization of remote C-H bonds via intramolecular hydrogen atom transfer (HAT) is transformative for organic synthesis. This radical-mediated strategy provides access to novel reactivity that is complementary to closed-shell pathways. As modern methods for mild generation of radicals are continually developed, inherent selectivity paradigms of HAT mechanisms offer unparalleled opportunities for developing new strategies for C-H functionalization. This review outlines the history, recent advances, and mechanistic underpinnings of intramolecular HAT as a guide to addressing ongoing challenges in this arena.
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Affiliation(s)
- Leah M Stateman
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, Ohio, 43210, USA
| | - Kohki M Nakafuku
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, Ohio, 43210, USA
| | - David A Nagib
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, Ohio, 43210, USA
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144
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Guo K, Zhang H, Cao S, Gu C, Zhou H, Li J, Zhu Y. Copper-Catalyzed Domino Cyclization/Trifluoromethylthiolation of Unactivated Alkenes: Access to SCF3-Containing Pyrrolines. Org Lett 2018; 20:2261-2264. [DOI: 10.1021/acs.orglett.8b00614] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Kang Guo
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry, College of Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Honglin Zhang
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry, College of Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Shujun Cao
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry, College of Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Chen Gu
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry, College of Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Huating Zhou
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry, College of Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Jie Li
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry, College of Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Yingguang Zhu
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry, College of Sciences, Nanjing Agricultural University, Nanjing 210095, China
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145
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Ratushnyy M, Parasram M, Wang Y, Gevorgyan V. Palladium-Catalyzed Atom-Transfer Radical Cyclization at Remote Unactivated C(sp 3 )-H Sites: Hydrogen-Atom Transfer of Hybrid Vinyl Palladium Radical Intermediates. Angew Chem Int Ed Engl 2018; 57:2712-2715. [PMID: 29341489 PMCID: PMC5829020 DOI: 10.1002/anie.201712775] [Citation(s) in RCA: 78] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2017] [Indexed: 12/12/2022]
Abstract
A novel mild, visible-light-induced palladium-catalyzed hydrogen atom translocation/atom-transfer radical cyclization (HAT/ATRC) cascade has been developed. This protocol involves a 1,5-HAT process of previously unknown hybrid vinyl palladium radical intermediates, thus leading to iodomethyl carbo- and heterocyclic structures.
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Affiliation(s)
- Maxim Ratushnyy
- Department of Chemistry, University of Illinois at Chicago, 845 W. Taylor Street, Chicago, IL, 60607-7061, USA
| | - Marvin Parasram
- Department of Chemistry, University of Illinois at Chicago, 845 W. Taylor Street, Chicago, IL, 60607-7061, USA
| | - Yang Wang
- Department of Chemistry, University of Illinois at Chicago, 845 W. Taylor Street, Chicago, IL, 60607-7061, USA
| | - Vladimir Gevorgyan
- Department of Chemistry, University of Illinois at Chicago, 845 W. Taylor Street, Chicago, IL, 60607-7061, USA
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146
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147
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148
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Chuentragool P, Parasram M, Shi Y, Gevorgyan V. General, Mild, and Selective Method for Desaturation of Aliphatic Amines. J Am Chem Soc 2018; 140:2465-2468. [PMID: 29400959 PMCID: PMC5821538 DOI: 10.1021/jacs.8b00488] [Citation(s) in RCA: 96] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
A novel method for desaturation of aliphatic amines into enamines as well as allylic and homoallylic amines has been developed. This general protocol operates via putative aryl hybrid Pd-radical intermediates, which combine the signature features of radical chemistry, a hydrogen atom transfer (HAT) process, and transition metal chemistry, a selective β-hydride elimination step, to achieve efficient and selective desaturation of amines. These hybrid Pd-radical intermediates are efficiently generated under mild photoinduced conditions and are capable of a 1,n-HAT (n = 5-7) event at C(sp3)-H sites. The selectivity of HAT is tunable by varying different auxiliaries, which highlight the generality of this method. Remarkably, this desaturation method, which operates under mild conditions and does not require employment of exogenous photosensitizers or oxidants, can be performed in a practical scalable fashion from simple amines.
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Affiliation(s)
- Padon Chuentragool
- Department of Chemistry, University of Illinois at Chicago, 845 West Taylor Street, Chicago, Illinois 60607-7061, United States
| | - Marvin Parasram
- Department of Chemistry, University of Illinois at Chicago, 845 West Taylor Street, Chicago, Illinois 60607-7061, United States
| | - Yi Shi
- Department of Chemistry, University of Illinois at Chicago, 845 West Taylor Street, Chicago, Illinois 60607-7061, United States
| | - Vladimir Gevorgyan
- Department of Chemistry, University of Illinois at Chicago, 845 West Taylor Street, Chicago, Illinois 60607-7061, United States
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149
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Tian WF, Wang DP, Wang SF, He KH, Cao XP, Li Y. Visible-Light Photoredox-Catalyzed Iminyl Radical Formation by N–H Cleavage with Hydrogen Release and Its Application in Synthesis of Isoquinolines. Org Lett 2018; 20:1421-1425. [DOI: 10.1021/acs.orglett.8b00193] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Wan-Fa Tian
- State
Key Laboratory of Applied Organic Chemistry and College of Chemistry
and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
- Center
for Organic Chemistry, Frontier Institute of Science and Technology, Xi’an Jiaotong University, Xi’an, Shaanxi 710054, P. R. China
| | - Dang-Po Wang
- State
Key Laboratory of Applied Organic Chemistry and College of Chemistry
and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
- Center
for Organic Chemistry, Frontier Institute of Science and Technology, Xi’an Jiaotong University, Xi’an, Shaanxi 710054, P. R. China
| | - Shao-Feng Wang
- State
Key Laboratory of Applied Organic Chemistry and College of Chemistry
and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
- Center
for Organic Chemistry, Frontier Institute of Science and Technology, Xi’an Jiaotong University, Xi’an, Shaanxi 710054, P. R. China
| | - Ke-Han He
- Center
for Organic Chemistry, Frontier Institute of Science and Technology, Xi’an Jiaotong University, Xi’an, Shaanxi 710054, P. R. China
| | - Xiao-Ping Cao
- State
Key Laboratory of Applied Organic Chemistry and College of Chemistry
and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Yang Li
- Center
for Organic Chemistry, Frontier Institute of Science and Technology, Xi’an Jiaotong University, Xi’an, Shaanxi 710054, P. R. China
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150
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Jin W, Zhou Y, Zhao Y, Ma Q, Kong L, Zhu G. Nickel-Catalyzed Remote Arylation of Alkenyl Aldehydes Initiated by Radical Alkylation with Tertiary α-Carbonyl Alkyl Bromides. Org Lett 2018; 20:1435-1438. [DOI: 10.1021/acs.orglett.8b00221] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Weiwei Jin
- Key Laboratory of the Ministry of Education
for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, China
| | - Yulu Zhou
- Key Laboratory of the Ministry of Education
for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, China
| | - Ying Zhao
- Key Laboratory of the Ministry of Education
for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, China
| | - Qianqian Ma
- Key Laboratory of the Ministry of Education
for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, China
| | - Lichun Kong
- Key Laboratory of the Ministry of Education
for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, China
| | - Gangguo Zhu
- Key Laboratory of the Ministry of Education
for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, China
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