1
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Fleetwood TD, Kerr WJ, Mason J. Copper-Mediated N-Trifluoromethylation of O-Benzoylhydroxylamines. Chemistry 2024; 30:e202303314. [PMID: 38018464 PMCID: PMC10952365 DOI: 10.1002/chem.202303314] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2023] [Revised: 11/24/2023] [Accepted: 11/28/2023] [Indexed: 11/30/2023]
Abstract
The use of trifluoromethyl containing compounds is well established within medicinal chemistry, with a range of approved drugs containing C-CF3 and O-CF3 moieties. However, the utilisation of the N-CF3 functional group remains relatively unexplored. This may be attributed to the challenging synthesis of this unit, with many current methods employing harsh conditions or less accessible reagents. A robust methodology for the N-trifluoromethylation of secondary amines has been developed, which employs an umpolung strategy in the form of a copper-catalysed electrophilic amination. The method is operationally simple, uses mild, inexpensive reagents, and has been used to synthesise a range of novel, structurally complex N-CF3 containing compounds.
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Affiliation(s)
- Thomas D. Fleetwood
- Medicinal ChemistryGSK Medicines Research CentreGunnels Wood RoadSG1 2NYStevenageEnglandU.K.
- Department of Pure and Applied ChemistryUniversity of StrathclydeG1 1XLGlasgowScotlandU.K.
| | - William J. Kerr
- Department of Pure and Applied ChemistryUniversity of StrathclydeG1 1XLGlasgowScotlandU.K.
| | - Joseph Mason
- Medicinal ChemistryGSK Medicines Research CentreGunnels Wood RoadSG1 2NYStevenageEnglandU.K.
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2
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Ibrahim K, Saranya PV, Anilkumar G. Recent Advances and Prospects in the Amination of Benzoxazoles. ChemistrySelect 2022. [DOI: 10.1002/slct.202200601] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Kaliyathodi Ibrahim
- School of Chemical Sciences Mahatma Gandhi University Priyadarsini Hills P O Kottayam Kerala INDIA 686560
| | - Padinjare Veetil Saranya
- School of Chemical Sciences Mahatma Gandhi University Priyadarsini Hills P O Kottayam Kerala INDIA 686560
| | - Gopinathan Anilkumar
- School of Chemical Sciences Mahatma Gandhi University Priyadarsini Hills P O Kottayam Kerala INDIA 686560
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3
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Van Emelen L, Henrion M, Lemmens R, De Vos D. C–N coupling reactions with arenes through C–H activation: the state-of-the-art versus the principles of green chemistry. Catal Sci Technol 2022. [DOI: 10.1039/d1cy01827b] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Herein, we discuss the state-of-the-art in arene C–N coupling through C–H activation and to what extent it complies with the principles of green chemistry, with a focus on heterogeneously catalysed systems.
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Affiliation(s)
- Lisa Van Emelen
- Centre for Membrane Separations, Adsorption, Catalysis and Spectroscopy for Sustainable Solutions (cMACS), Department of Microbial and Molecular Systems, KU Leuven – University of Leuven, Leuven Chem & Tech, Celestijnenlaan 200F Postbox 2454, Heverlee, Belgium
| | - Mickaël Henrion
- Centre for Membrane Separations, Adsorption, Catalysis and Spectroscopy for Sustainable Solutions (cMACS), Department of Microbial and Molecular Systems, KU Leuven – University of Leuven, Leuven Chem & Tech, Celestijnenlaan 200F Postbox 2454, Heverlee, Belgium
| | - Robin Lemmens
- Centre for Membrane Separations, Adsorption, Catalysis and Spectroscopy for Sustainable Solutions (cMACS), Department of Microbial and Molecular Systems, KU Leuven – University of Leuven, Leuven Chem & Tech, Celestijnenlaan 200F Postbox 2454, Heverlee, Belgium
| | - Dirk De Vos
- Centre for Membrane Separations, Adsorption, Catalysis and Spectroscopy for Sustainable Solutions (cMACS), Department of Microbial and Molecular Systems, KU Leuven – University of Leuven, Leuven Chem & Tech, Celestijnenlaan 200F Postbox 2454, Heverlee, Belgium
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4
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Begam HM, Choudhury R, Behera A, Jana R. Copper-Catalyzed Electrophilic Ortho C(sp 2)-H Amination of Aryl Amines: Dramatic Reactivity of Bicyclic System. Org Lett 2019; 21:4651-4656. [PMID: 31184191 DOI: 10.1021/acs.orglett.9b01546] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
A practical copper-catalyzed, 2-picolinamide-directed ortho C-H amination of anilines with benzoyl-protected hydroxylamines has been disclosed that proceeds smoothly without any external stoichiometric oxidant or additives. Remarkably, besides anilines, bicyclic naphthyl or heterocyclic amines furnished amination products with five- and six-membered cyclic and acyclic amines at the ortho position selectively. This electrophilic C-H amination also proceeds smoothly in water under slightly modified reaction conditions.
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Affiliation(s)
- Hasina Mamataj Begam
- Organic and Medicinal Chemistry Division , CSIR-Indian Institute of Chemical Biology , 4 Raja S. C. Mullick Road, Jadavpur , Kolkata - 700032 , West Bengal , India
| | - Rajarshee Choudhury
- Organic and Medicinal Chemistry Division , CSIR-Indian Institute of Chemical Biology , 4 Raja S. C. Mullick Road, Jadavpur , Kolkata - 700032 , West Bengal , India.,National Institute of Pharmaceutical Education and Research (NIPER) , Kolkata - 700054 , West Bengal , India
| | - Ashok Behera
- Organic and Medicinal Chemistry Division , CSIR-Indian Institute of Chemical Biology , 4 Raja S. C. Mullick Road, Jadavpur , Kolkata - 700032 , West Bengal , India
| | - Ranjan Jana
- Organic and Medicinal Chemistry Division , CSIR-Indian Institute of Chemical Biology , 4 Raja S. C. Mullick Road, Jadavpur , Kolkata - 700032 , West Bengal , India
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5
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Niu SL, Hu J, He K, Chen YC, Xiao Q. Copper-Catalyzed Three-Component Carboamination of Arynes: Expeditious Synthesis of o-Alkynyl Anilines and o-Benzoxazolyl Anilines. Org Lett 2019; 21:4250-4254. [DOI: 10.1021/acs.orglett.9b01427] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Sheng-Li Niu
- College of Pharmacy, Third Military Medical University, Chongqing 400038, China
| | - Jiangtao Hu
- College of Pharmacy, Third Military Medical University, Chongqing 400038, China
| | - Kuicheng He
- College of Pharmacy, Third Military Medical University, Chongqing 400038, China
| | - Ying-Chun Chen
- College of Pharmacy, Third Military Medical University, Chongqing 400038, China
| | - Qing Xiao
- College of Pharmacy, Third Military Medical University, Chongqing 400038, China
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6
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Lee S, Lee Y. Copper-Catalyzed Electrophilic Amination of Benzoxazoles via Magnesation. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900335] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Sangback Lee
- Department of Chemistry; Kwangwoon University; 01897 Seoul Republic of Korea
| | - Yunmi Lee
- Department of Chemistry; Kwangwoon University; 01897 Seoul Republic of Korea
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7
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Gandeepan P, Müller T, Zell D, Cera G, Warratz S, Ackermann L. 3d Transition Metals for C-H Activation. Chem Rev 2018; 119:2192-2452. [PMID: 30480438 DOI: 10.1021/acs.chemrev.8b00507] [Citation(s) in RCA: 1423] [Impact Index Per Article: 237.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
C-H activation has surfaced as an increasingly powerful tool for molecular sciences, with notable applications to material sciences, crop protection, drug discovery, and pharmaceutical industries, among others. Despite major advances, the vast majority of these C-H functionalizations required precious 4d or 5d transition metal catalysts. Given the cost-effective and sustainable nature of earth-abundant first row transition metals, the development of less toxic, inexpensive 3d metal catalysts for C-H activation has gained considerable recent momentum as a significantly more environmentally-benign and economically-attractive alternative. Herein, we provide a comprehensive overview on first row transition metal catalysts for C-H activation until summer 2018.
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Affiliation(s)
- Parthasarathy Gandeepan
- Institut für Organische und Biomolekulare Chemie , Georg-August-Universität Göttingen , Tammannstraße 2 , 37077 Göttingen , Germany
| | - Thomas Müller
- Institut für Organische und Biomolekulare Chemie , Georg-August-Universität Göttingen , Tammannstraße 2 , 37077 Göttingen , Germany
| | - Daniel Zell
- Institut für Organische und Biomolekulare Chemie , Georg-August-Universität Göttingen , Tammannstraße 2 , 37077 Göttingen , Germany
| | - Gianpiero Cera
- Institut für Organische und Biomolekulare Chemie , Georg-August-Universität Göttingen , Tammannstraße 2 , 37077 Göttingen , Germany
| | - Svenja Warratz
- Institut für Organische und Biomolekulare Chemie , Georg-August-Universität Göttingen , Tammannstraße 2 , 37077 Göttingen , Germany
| | - Lutz Ackermann
- Institut für Organische und Biomolekulare Chemie , Georg-August-Universität Göttingen , Tammannstraße 2 , 37077 Göttingen , Germany
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8
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Ichikawa S, Zhu S, Buchwald SL. A Modified System for the Synthesis of Enantioenriched N-Arylamines through Copper-Catalyzed Hydroamination. Angew Chem Int Ed Engl 2018; 57:8714-8718. [PMID: 29847002 PMCID: PMC6033674 DOI: 10.1002/anie.201803026] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2018] [Revised: 04/27/2018] [Indexed: 02/03/2023]
Abstract
Despite significant recent progress in copper-catalyzed enantioselective hydroamination chemistry, the synthesis of chiral N-arylamines, which are frequently found in natural products and pharmaceuticals, has not been realized. Initial experiments with N-arylhydroxylamine ester electrophiles were unsuccessful and, instead, their reduction in the presence of copper hydride (CuH) catalysts was observed. Herein, we report key modifications to our previously reported hydroamination methods that lead to broadly applicable conditions for the enantioselective net addition of secondary anilines across the double bond of styrenes, 1,1-disubstituted olefins, and terminal alkenes. NMR studies suggest that suppression of the undesired reduction pathway is the basis for the dramatic improvements in yield under the reported method.
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Affiliation(s)
- Saki Ichikawa
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
| | - Shaolin Zhu
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
| | - Stephen L Buchwald
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
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9
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Ichikawa S, Zhu S, Buchwald SL. A Modified System for the Synthesis of Enantioenriched
N
‐Arylamines through Copper‐Catalyzed Hydroamination. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201803026] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Saki Ichikawa
- Department of Chemistry Massachusetts Institute of Technology Cambridge MA 02139 USA
| | - Shaolin Zhu
- Department of Chemistry Massachusetts Institute of Technology Cambridge MA 02139 USA
| | - Stephen L. Buchwald
- Department of Chemistry Massachusetts Institute of Technology Cambridge MA 02139 USA
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10
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Zhu H, Shen Y, Deng Q, Le ZG, Tu T. Ligand-Free Pd/Cu-Catalyzed Aminosulfonylation of Aryl Iodides for Direct Sulfonamide Syntheses. ASIAN J ORG CHEM 2017. [DOI: 10.1002/ajoc.201700350] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Haibo Zhu
- Department of Chemistry; Fudan University; 220 Handan Road Shanghai 200433 China
| | - Yajing Shen
- Department of Chemistry; Fudan University; 220 Handan Road Shanghai 200433 China
| | - Qinyue Deng
- Department of Chemistry; Fudan University; 220 Handan Road Shanghai 200433 China
| | - Zhang-Gao Le
- School of Chemistry, Biology and Material Science; East China University of Technology; Nanchang 330013 China
| | - Tao Tu
- Department of Chemistry; Fudan University; 220 Handan Road Shanghai 200433 China
- State Key Laboratory of Organometallic Chemistry; Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; Shanghai 200032 China
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11
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Zhu H, Shen Y, Deng Q, Huang C, Tu T. One-Pot Bimetallic Pd/Cu-Catalyzed Synthesis of Sulfonamides from Boronic Acids, DABSO and O-Benzoyl Hydroxylamines. Chem Asian J 2017; 12:706-712. [PMID: 28079985 DOI: 10.1002/asia.201601732] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Revised: 01/06/2017] [Indexed: 12/18/2022]
Abstract
A practical and straightforward bimetallic Pd/Cu catalytic system has been developed. This system affords various sulfonamides in one pot from easy-to-handle and readily available boronic acids, sulfur dioxide surrogate DABSO and O-benzoyl hydroxylamines in high yields. Without additional ligands, the newly developed catalytic system revealed a broad substrate scope for both partners and tolerated a wide array of functional groups even at low catalyst loadings. Furthermore, based on control experiments, a plausible mechanism has been proposed, in which sodium sulfinate has been isolated and identified as the crucial intermediate for this transformation.
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Affiliation(s)
- Haibo Zhu
- Department of Chemistry, Fudan University, 220 Handan Road, Shanghai, 200433, China
| | - Yajing Shen
- Department of Chemistry, Fudan University, 220 Handan Road, Shanghai, 200433, China
| | - Qinyue Deng
- Department of Chemistry, Fudan University, 220 Handan Road, Shanghai, 200433, China
| | - Changyu Huang
- Department of Chemistry, Fudan University, 220 Handan Road, Shanghai, 200433, China
| | - Tao Tu
- Department of Chemistry, Fudan University, 220 Handan Road, Shanghai, 200433, China.,State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, 200032, China
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12
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Pimpasri C, Sumunnee L, Yotphan S. Copper-catalyzed oxidative decarboxylative coupling of α-keto acids and sulfoximines. Org Biomol Chem 2017; 15:4320-4327. [DOI: 10.1039/c7ob00776k] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The formation of N-aroylsulfoximines via a copper-catalyzed oxidative decarboxylative coupling of α-keto acids with NH-sulfoximines is reported.
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Affiliation(s)
- Chaleena Pimpasri
- Center of Excellence for Innovation in Chemistry (PERCH-CIC)
- Department of Chemistry
- Faculty of Science
- Mahidol University
- Bangkok 10400
| | - Ladawan Sumunnee
- Center of Excellence for Innovation in Chemistry (PERCH-CIC)
- Department of Chemistry
- Faculty of Science
- Mahidol University
- Bangkok 10400
| | - Sirilata Yotphan
- Center of Excellence for Innovation in Chemistry (PERCH-CIC)
- Department of Chemistry
- Faculty of Science
- Mahidol University
- Bangkok 10400
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13
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Zhou Y, Bao X. DFT Study of Pd(0)-Promoted Intermolecular C-H Amination with O-Benzoyl Hydroxylamines. Org Lett 2016; 18:4506-9. [PMID: 27573977 DOI: 10.1021/acs.orglett.6b02093] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Computational studies were carried out to explore the mechanism of Pd-catalyzed intermolecular C-H amination with O-benzoyl hydroxylamines in which both Pd(0) and Pd(II) catalysts are effective. For the Pd(0)-catalyzed reaction, the generally assumed Pd(0)/Pd(II) catalytic cycle might not be feasible. Instead, Pd(0), being essentially a catalyst precursor, could be oxidized to Pd(II), and the C-H amination proceeds through the Pd(II)/Pd(IV) catalytic cycle.
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Affiliation(s)
- Yunfei Zhou
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University , 199 Ren-Ai Road, Suzhou Industrial Park, Suzhou, Jiangsu 215123, China
| | - Xiaoguang Bao
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University , 199 Ren-Ai Road, Suzhou Industrial Park, Suzhou, Jiangsu 215123, China
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14
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Dong X, Liu Q, Dong Y, Liu H. Transition-Metal-Catalyzed Electrophilic Amination: Application of O-Benzoylhydroxylamines in the Construction of the C-N Bond. Chemistry 2016; 23:2481-2511. [PMID: 27457353 DOI: 10.1002/chem.201601607] [Citation(s) in RCA: 108] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2016] [Indexed: 01/08/2023]
Abstract
Transition-metal-catalyzed electrophilic amination has been developed into a powerful tool for C-N bond construction. So far, O-benzoylhydroxylamines are the most widely used electrophilic aminating reagents. Herein, we summarize the recent advances of O-benzoylhydroxylamines involved in electrophilic amination catalyzed by transition metals. Several pioneering studies and some of the relevant mechanisms are discussed in this review.
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Affiliation(s)
- Xu Dong
- School of Chemical Engineering, Shandong University of Technology, 266 West Xincun Road, Zibo, 255049, P. R. China
| | - Qing Liu
- School of Chemical Engineering, Shandong University of Technology, 266 West Xincun Road, Zibo, 255049, P. R. China
| | - Yunhui Dong
- School of Chemical Engineering, Shandong University of Technology, 266 West Xincun Road, Zibo, 255049, P. R. China.,Engineering Research Center of Textile Chemicals, Dyeing and Finishing of Shandong University of Technology, Zibo, 255049, P. R. China
| | - Hui Liu
- School of Chemical Engineering, Shandong University of Technology, 266 West Xincun Road, Zibo, 255049, P. R. China.,College of Materials Science and Engineering, Hunan University, Changsha, Hunan, 410082, China.,Engineering Research Center of Textile Chemicals, Dyeing and Finishing of Shandong University of Technology, Zibo, 255049, P. R. China
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15
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Yuan JW, Jin M, Yin QY, Mao P, Qu LB.
n
Bu 4NI-catalyzed direct amination of benzoxazoles with tertiary amines using TBHP as oxidant under microwave irradiation. ZEITSCHRIFT FUR NATURFORSCHUNG SECTION B-A JOURNAL OF CHEMICAL SCIENCES 2016. [DOI: 10.1515/znb-2015-0212] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Abstract
A facile, efficient, and practical method for
n
Bu4NI-catalyzed direct C–H amination of benzoxazoles with tertiary amines has been developed. The system could be performed in the absence of metal catalyst and only requires tert-butyl hydroperoxide as oxidant under microwave irradiation. A variety of substituted benzoxazol-2-amines were synthesized with moderate to good yield.
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Affiliation(s)
- Jin-Wei Yuan
- School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou 450001, P. R. China
| | - Ming Jin
- School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou 450001, P. R. China
| | - Qiu-Yue Yin
- School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou 450001, P. R. China
| | - Pu Mao
- School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou 450001, P. R. China
| | - Ling-Bo Qu
- School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou 450001, P. R. China
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16
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Jiao J, Murakami K, Itami K. Catalytic Methods for Aromatic C–H Amination: An Ideal Strategy for Nitrogen-Based Functional Molecules. ACS Catal 2015. [DOI: 10.1021/acscatal.5b02417] [Citation(s) in RCA: 406] [Impact Index Per Article: 45.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Jiao Jiao
- Institute
of Transformative Bio-Molecules (WPI-ITbM) and Graduate School of
Science, Nagoya University, Chikusa, Nagoya 464-8602, Japan
| | - Kei Murakami
- Institute
of Transformative Bio-Molecules (WPI-ITbM) and Graduate School of
Science, Nagoya University, Chikusa, Nagoya 464-8602, Japan
| | - Kenichiro Itami
- Institute
of Transformative Bio-Molecules (WPI-ITbM) and Graduate School of
Science, Nagoya University, Chikusa, Nagoya 464-8602, Japan
- JST,
ERATO, Itami Molecular Nanocarbon Project, Nagoya University, Chikusa, Nagoya 464-8602, Japan
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17
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Subramanian P, Rudolf GC, Kaliappan KP. Recent Trends in Copper-Catalyzed C-H Amination Routes to Biologically Important Nitrogen Scaffolds. Chem Asian J 2015; 11:168-92. [PMID: 26353917 DOI: 10.1002/asia.201500361] [Citation(s) in RCA: 98] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2015] [Revised: 04/27/2015] [Indexed: 01/09/2023]
Abstract
Nitrogen-containing heterocycles have found remarkable applications in natural product research, material sciences, and pharmaceuticals. Although the synthesis of this interesting class of compounds attracted the interest of generations of organic chemists, simple and straightforward assembly methods based on transition-metal catalysis have regularly been elusive. The recent advancements in the development of C-H functionalization have helped in accomplishing the synthesis of a variety of complex heterocycles from simple precursors. This Focus Review summarizes the recent advances in one particular field: the copper-catalyzed C-N bond formation reactions via C-H bond functionalization to furnish a comprehensive range of nitrogen heterocycles. Applicability and synthetic feasibility of a particular reaction represent major requirements for the inclusion in this review.
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Affiliation(s)
| | - Georg C Rudolf
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, 400076, India
| | - Krishna P Kaliappan
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, 400076, India.
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18
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Yoon H, Lee Y. Copper-Catalyzed Electrophilic Amination of Heteroarenes via C-H Alumination. J Org Chem 2015; 80:10244-51. [PMID: 26421609 DOI: 10.1021/acs.joc.5b01863] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A highly efficient Cu-catalyzed electrophilic amination reaction of readily available heteroarenes with O-benzoyl hydroxylamines via a one-pot C-H alumination is reported. The reactions were catalyzed using 1 mol % of CuCl to afford various heteroaryl amines in good to excellent yields. The direct C-H lithiation/transalumination of heteroarenes and catalytic amination sequence can be performed in a single vessel on gram scales.
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Affiliation(s)
- Hongju Yoon
- Department of Chemistry, Kwangwoon University , Seoul 01897, Republic of Korea
| | - Yunmi Lee
- Department of Chemistry, Kwangwoon University , Seoul 01897, Republic of Korea
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19
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Niu D, Buchwald SL. Design of Modified Amine Transfer Reagents Allows the Synthesis of α-Chiral Secondary Amines via CuH-Catalyzed Hydroamination. J Am Chem Soc 2015; 137:9716-21. [PMID: 26144542 PMCID: PMC4528777 DOI: 10.1021/jacs.5b05446] [Citation(s) in RCA: 108] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2015] [Indexed: 12/21/2022]
Abstract
The CuH-catalyzed hydroamination of alkenes and alkynes using a silane and an amine transfer reagent represents a simple strategy to access chiral amine products. We have recently reported methods to prepare chiral amines with high efficiency and stereoselectivity using this approach. However, the current technology is limited to the synthesis of trialkylamines from dialkylamine transfer reagents (R2NOBz). When monoalkylamine transfer reagents [RN(H)OBz] were used for the synthesis of chiral secondary amines, competitive, nonproductive consumption of these reagents by the CuH species resulted in poor yields. In this paper, we report the design of a modified type of amine transfer reagent that addresses this limitation. This effort has enabled us to develop a CuH-catalyzed synthesis of chiral secondary amines using a variety of amine coupling partners, including those derived from amino acid esters, carbohydrates, and steroids. Mechanistic investigations indicated that the modified amine transfer reagents are less susceptible to direct reaction with CuH.
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Affiliation(s)
- Dawen Niu
- Department of Chemistry, Massachusetts
Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Stephen L. Buchwald
- Department of Chemistry, Massachusetts
Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
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20
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Baburajan P, Elango KP. One-Pot Synthesis of 2-Arylbenzoxazoles by Gas-Free Carbonylation using Dicobalt Octacarbonyl as a Solid Carbon Monoxide Source. ASIAN J ORG CHEM 2015. [DOI: 10.1002/ajoc.201402252] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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21
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Zhao X, Ding F, Li J, Lu K, Lu X, Wang B, Yu P. Direct C–H iodination of 1,3-azoles catalysed by CuBr 2. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2014.12.029] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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22
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Zhu H, Shen Y, Deng Q, Tu T. Copper-catalyzed electrophilic amination of sodium sulfinates at room temperature. Chem Commun (Camb) 2015; 51:16573-6. [DOI: 10.1039/c5cc06069a] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Copper-catalyzed electrophilic amination of sodium sulfinates for the synthesis of sulfonamides using O-benzoyl hydroxylamines at ambient temperature.
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Affiliation(s)
- Haibo Zhu
- Department of Chemistry
- Fudan University
- Shanghai
- China
| | - Yajing Shen
- Department of Chemistry
- Fudan University
- Shanghai
- China
| | - Qinyue Deng
- Department of Chemistry
- Fudan University
- Shanghai
- China
| | - Tao Tu
- Department of Chemistry
- Fudan University
- Shanghai
- China
- State Key Laboratory of Elemento-organic Chemistry
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23
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Wang B, Liu N, Chen W, Huang D, Wang X, Hu Y. Minutes Synthesis of 1,4,5-Trisubstituted 5-Dialkylamino-1,2,3-triazoles by 1-Copper(I)-Alkyne Controlled Tandem Process. Adv Synth Catal 2014. [DOI: 10.1002/adsc.201400471] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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