1
|
Shao C, Xu T, Chen C, Yang Q, Tang C, Chen P, Lu M, Hu Z, Hu H, Zhang T. Copper-catalyzed selective C5-H bromination and difluoromethylation of 8-aminoquinoline amides using ethyl bromodifluoroacetate as the bifunctional reagent. RSC Adv 2023; 13:6993-6999. [PMID: 36874938 PMCID: PMC9977446 DOI: 10.1039/d3ra00088e] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Accepted: 02/13/2023] [Indexed: 03/05/2023] Open
Abstract
A simple and effective method for the copper-catalyzed selective C5-H bromination and difluoromethylation of 8-aminoquinoline amides with ethyl bromodifluoroacetate as the bifunctional reagent was developed. The combination of cupric catalyst and alkaline additive results in a C5-bromination reaction, whereas cuprous catalyst combined with silver additive results in the C5-difluoromethylation reaction. This method has a broad substrate scope and allows for easy and convenient access to desired C5-functionalized quinolones with good to excellent yields.
Collapse
Affiliation(s)
- Changdong Shao
- Jiangsu Provincial Key Laboratory for Chemistry of Low-Dimensional Materials, School of Chemistry and Chemical Engineering, Huaiyin Normal University Huai'an 223300 Jiangsu China
| | - Tianyi Xu
- Jiangsu Provincial Key Laboratory for Chemistry of Low-Dimensional Materials, School of Chemistry and Chemical Engineering, Huaiyin Normal University Huai'an 223300 Jiangsu China
| | - Chen Chen
- Jiangsu Provincial Key Laboratory for Chemistry of Low-Dimensional Materials, School of Chemistry and Chemical Engineering, Huaiyin Normal University Huai'an 223300 Jiangsu China
| | - Qionglin Yang
- Jiangsu Provincial Key Laboratory for Chemistry of Low-Dimensional Materials, School of Chemistry and Chemical Engineering, Huaiyin Normal University Huai'an 223300 Jiangsu China
| | - Chao Tang
- Jiangsu Provincial Key Laboratory for Chemistry of Low-Dimensional Materials, School of Chemistry and Chemical Engineering, Huaiyin Normal University Huai'an 223300 Jiangsu China
| | - Ping Chen
- Jiangsu Provincial Key Laboratory for Chemistry of Low-Dimensional Materials, School of Chemistry and Chemical Engineering, Huaiyin Normal University Huai'an 223300 Jiangsu China
| | - Mingzhu Lu
- Jiangsu Provincial Key Laboratory for Chemistry of Low-Dimensional Materials, School of Chemistry and Chemical Engineering, Huaiyin Normal University Huai'an 223300 Jiangsu China
| | - Zhengsong Hu
- Jiangsu Provincial Key Laboratory for Chemistry of Low-Dimensional Materials, School of Chemistry and Chemical Engineering, Huaiyin Normal University Huai'an 223300 Jiangsu China
| | - Huayou Hu
- Jiangsu Provincial Key Laboratory for Chemistry of Low-Dimensional Materials, School of Chemistry and Chemical Engineering, Huaiyin Normal University Huai'an 223300 Jiangsu China
| | - Tingting Zhang
- Jiangsu Provincial Key Laboratory for Chemistry of Low-Dimensional Materials, School of Chemistry and Chemical Engineering, Huaiyin Normal University Huai'an 223300 Jiangsu China
| |
Collapse
|
2
|
Ji H, Wang Z, Zhan H, Fang Z, Zhang Q, Li D. Copper-catalyzed benzylic C–H amidation of toluene derivatives with N-(8-quinolyl)amides through C(sp3)–H/N–H cross dehydrogenative coupling. Tetrahedron 2022. [DOI: 10.1016/j.tet.2022.133066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
3
|
Burra AG, Uredi D, Motati DR, Fronczek FR, Watkins EB. Remote Functionalization of 8‐Substituted Quinolines with para‐Quinone Methides: Access to Unsymmetrical Tri(hetero)arylmethanes. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
| | | | | | | | - E. Blake Watkins
- Union University Pharmaceutical Sciences 1050 Union University Drive 38305 Jackson UNITED STATES
| |
Collapse
|
4
|
Khot NP, Mahato P, T K S, Mukherjee S, Kapur M. Rh(III)-Catalyzed C(7)-H Alkylation of Quinolines in the Synthesis of Angular π-Extended Pyrroloquinolines for Single-Component White-Light Emission. Org Lett 2022; 24:2186-2191. [PMID: 35262360 DOI: 10.1021/acs.orglett.2c00503] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Reported herein is a sustainable approach for a regioselective, Rh(III)-catalyzed C(7)-H alkylation of 8-aminoquinolines via metal carbene migratory insertion. This transformation displays a high functional group tolerance and exquisite site selectivity to afford the C-7 alkylated products. These products are derivatized to afford π-extended angular pyrroloquinolines, one of which (4h) shows white-light emission (WLE) with CIE coordinates (0.26, 0.34). An excellent cell viability and in vivo cellular imaging substantiate the nontoxic nature of these compounds.
Collapse
Affiliation(s)
- Nandkishor Prakash Khot
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhauri, Bhopal, 462066 MP, India
| | - Paritosh Mahato
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhauri, Bhopal, 462066 MP, India
| | - Sajeev T K
- Department of Biological Sciences, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhauri, Bhopal, 462066 MP, India
| | - Saptarshi Mukherjee
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhauri, Bhopal, 462066 MP, India
| | - Manmohan Kapur
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhauri, Bhopal, 462066 MP, India
| |
Collapse
|
5
|
Guo X, Li P, Wang Q, Wang Q, Wang L. Remote Selective Decarboxylative Difluoroarylmethylation of 8-Aminoquinolines under Transition Metal-Free Conditions. Org Chem Front 2022. [DOI: 10.1039/d1qo01912k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A facile transition metal-free decarboxylative C4 selective C-H difluoroarylmethylation of 8-aminoquinolines has been developed. This strategy proceeds under simple aqueous conditions and displays a broad substrate scope and excellent functional...
Collapse
|
6
|
Haozhi W, Tian L, Jianwen J, Jieping W. KI-Catalyzed Selective C(5)-Sulfenylation and C(5),C(7)-Disulfenylation of Unprotected 8-Aminoquinolines and the Indole C(2),C(3)-Disulfenylation. CHINESE J ORG CHEM 2022. [DOI: 10.6023/cjoc202206029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
|
7
|
Wang D, Zhang L, Xiao F, Mao GJ, Deng GJ. Electrochemical Selective C3-Thiolation of Quinolines. Org Chem Front 2022. [DOI: 10.1039/d2qo00148a] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An electrochemical method has been developed to achieve C3-thiolation of quinoline compounds. This new strategy highlights the maximum atom economy, direct conversion and also the use of simple and readily...
Collapse
|
8
|
Zhao M, Zhang K, Xu J, Li J. Fe III/TBHP mediated remote C–O bond construction of 8-aminoquinolines: access to methoxylation and cyanomethoxylation. Org Chem Front 2022. [DOI: 10.1039/d2qo00438k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The C5 regioselective methoxylation and cyanomethoxylation of 8-aminoquinolines were achieved under FeIII/TBHP system by tuning the temperature and solvent. TBHP was investigated as an “oxygen” source in the ether bond formation for the first time.
Collapse
Affiliation(s)
- Mengfei Zhao
- Department of Organic Chemistry, College of Chemistry, Jilin University, 2519 Jiefang Road, Changchun 130021, P. R. China
| | - Kaixin Zhang
- Department of Organic Chemistry, College of Chemistry, Jilin University, 2519 Jiefang Road, Changchun 130021, P. R. China
| | - Jianxiong Xu
- Department of Organic Chemistry, College of Chemistry, Jilin University, 2519 Jiefang Road, Changchun 130021, P. R. China
| | - Jizhen Li
- Department of Organic Chemistry, College of Chemistry, Jilin University, 2519 Jiefang Road, Changchun 130021, P. R. China
- State Key laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, P.R. China
| |
Collapse
|
9
|
He L, Zhu Y, Xu Y. Copper‐Catalyzed Ligand‐Free Remote C−H Bond Amidation of 8‐Amidoquinolines with
N
‐Fluorobenzenesulfonimide. ChemistrySelect 2021. [DOI: 10.1002/slct.202102981] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Li He
- School of Chemistry and Chemical Engineering Harbin Institute of Technology Harbin 150001 China
| | - Yihang Zhu
- School of Chemistry and Chemical Engineering Harbin Institute of Technology Harbin 150001 China
| | - Yongjun Xu
- School of Chemistry and Chemical Engineering Harbin Institute of Technology Harbin 150001 China
| |
Collapse
|
10
|
Zhao M, Qin Z, Zhang K, Li J. Metal-free site-selective C-H cyanoalkylation of 8-aminoquinoline and aniline-derived amides with azobisisobutyronitrile. RSC Adv 2021; 11:30719-30724. [PMID: 35479854 PMCID: PMC9041112 DOI: 10.1039/d1ra06013a] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Accepted: 08/25/2021] [Indexed: 12/17/2022] Open
Abstract
Using K2S2O8, an efficient and metal-free site-selective C–H cyanoalkylation of 8-aminoquinoline and aniline-derived amides with AIBN (azobisisobutyronitrile) was developed. Without any catalyst, various substrates and functional groups were compatible to afford corresponding products in moderate to high yields. A mechanism study displayed that a radical–radical coupling process was involved via the N-centered radical generation and delocalization of aryl amides. An efficient metal-free cyanoalkylation of 8-aminoquinoline and aniline-derived amides was achieved in the presence of K2S2O8. The method showed good substrate tolerance and also suitable for bromination and dimerization reactions.![]()
Collapse
Affiliation(s)
- Mengfei Zhao
- Department of Organic Chemistry, College of Chemistry, Jilin University 2519 Jiefang Road Changchun 130021 P. R. China
| | - Zengxin Qin
- Department of Organic Chemistry, College of Chemistry, Jilin University 2519 Jiefang Road Changchun 130021 P. R. China
| | - Kaixin Zhang
- Department of Organic Chemistry, College of Chemistry, Jilin University 2519 Jiefang Road Changchun 130021 P. R. China
| | - Jizhen Li
- Department of Organic Chemistry, College of Chemistry, Jilin University 2519 Jiefang Road Changchun 130021 P. R. China
| |
Collapse
|
11
|
Iwasaki S, Kihara H, Imoto H, Naka K. Arsinoquinolines as a Novel Class of Luminophores. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100452] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Suzuka Iwasaki
- Faculty of Molecular Chemistry and Engineering, Graduate School of Science and Technology Kyoto Institute of Technology Goshokaido-cho, Matsugasaki, Sakyo-ku Kyoto 606-8585 Japan
| | - Hyota Kihara
- Faculty of Molecular Chemistry and Engineering, Graduate School of Science and Technology Kyoto Institute of Technology Goshokaido-cho, Matsugasaki, Sakyo-ku Kyoto 606-8585 Japan
| | - Hiroaki Imoto
- Faculty of Molecular Chemistry and Engineering, Graduate School of Science and Technology Kyoto Institute of Technology Goshokaido-cho, Matsugasaki, Sakyo-ku Kyoto 606-8585 Japan
| | - Kensuke Naka
- Faculty of Molecular Chemistry and Engineering, Graduate School of Science and Technology Kyoto Institute of Technology Goshokaido-cho, Matsugasaki, Sakyo-ku Kyoto 606-8585 Japan
- Materials Innovation Lab Kyoto Institute of Technology Goshokaido-cho, Matsugasaki, Sakyo-ku Kyoto 606-8585 Japan
| |
Collapse
|
12
|
Corio A, Gravier-Pelletier C, Busca P. Regioselective Functionalization of Quinolines through C-H Activation: A Comprehensive Review. Molecules 2021; 26:5467. [PMID: 34576936 PMCID: PMC8466797 DOI: 10.3390/molecules26185467] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2021] [Revised: 08/30/2021] [Accepted: 09/01/2021] [Indexed: 11/16/2022] Open
Abstract
Quinoline is a versatile heterocycle that is part of numerous natural products and countless drugs. During the last decades, this scaffold also became widely used as ligand in organometallic catalysis. Therefore, access to functionalized quinolines is of great importance and continuous efforts have been made to develop efficient and regioselective synthetic methods. In this regard, C-H functionalization through transition metal catalysis, which is nowadays the Graal of organic green chemistry, represents the most attractive strategy. We aim herein at providing a comprehensive review of methods that allow site-selective metal-catalyzed C-H functionalization of quinolines, or their quinoline N-oxides counterparts, with a specific focus on their scope and limitations, as well as mechanistic aspects if that accounts for the selectivity.
Collapse
Affiliation(s)
| | | | - Patricia Busca
- Laboratoire de Chimie et Biochimie Pharmacologiques et Toxicologiques, UMR CNRS 8601, Université de Paris, 45 rue des Saints-Pères, 75006 Paris, France; (A.C.); (C.G.-P.)
| |
Collapse
|
13
|
Ruyet L, Poisson T, Besset T. Transition Metal‐Free Regioselective Remote C−H Bond 2,2,2‐Trifluoroethoxylation of 8‐Aminoquinoline Derivatives at the C5 Position. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100580] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Louise Ruyet
- Normandie Univ, INSA Rouen, UNIROUEN, CNRS, COBRA (UMR 6014) 76000 Rouen France
| | - Thomas Poisson
- Normandie Univ, INSA Rouen, UNIROUEN, CNRS, COBRA (UMR 6014) 76000 Rouen France
- Institut Universitaire de France 75231 Paris France
| | - Tatiana Besset
- Normandie Univ, INSA Rouen, UNIROUEN, CNRS, COBRA (UMR 6014) 76000 Rouen France
| |
Collapse
|
14
|
Zhang Q, Shi BF. 2-(Pyridin-2-yl)isopropyl (PIP) Amine: An Enabling Directing Group for Divergent and Asymmetric Functionalization of Unactivated Methylene C(sp 3)-H Bonds. Acc Chem Res 2021; 54:2750-2763. [PMID: 34019373 DOI: 10.1021/acs.accounts.1c00168] [Citation(s) in RCA: 86] [Impact Index Per Article: 28.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Directing group (DG) assistance provides a good solution to the problems of reactivity and selectivity, two of the fundamental challenges in C(sp3)-H activation. However, the activation of unbiased methylene C(sp3)-H bonds remains challenging due to the high heterolytic bond dissociation energy and substantial steric hindrance. Two main strategies have been developed thus far, that is, use of a strongly coordinating bidentate DG pioneered by Daugulis and use of a weakly coordinating monodentate DG accelerated by pyridine-type ligands, as disclosed by Yu. The seminal work by Daugulis sparked significant interest in the application of the monoanionic bidentate auxiliary in aliphatic C-H activation reactions. Our research has focused on enabling the divergent functionalization and enantiotopic differentiation of unactivated methylene C-H bonds. Inspired by the structure of bidentate 8-aminoquinoline and the accelerating effect of the gem-dimethyl moiety in cyclometalations, we developed a strongly coordinating bidentate 2-(pyridine-yl)isopropyl (PIP) amine DG consisting of a pyridyl group, a gem-dimethyl moiety, and an amino group, which enabled the divergent functionalization of unactivated β-methylene C(sp3)-H bonds to forge C-O, C-N, C-C, and C-F bonds with palladium catalysts. The exclusive β-selectivity was ascribed to the preferential formation of kinetically favored [5,5]-bicyclic palladacycle intermediates. DFT calculations revealed that the well-designed gem-dimethyl group was responsible for the lowered energy and compressed bite angle of the key transition state related to C-H cleavage.More recently, the combination of PIP amine with axially chiral ligands was found to promote asymmetric functionalization of unbiased methylene C(sp3)-H bonds, a challenging research topic in the area of C-H activation that remains to be addressed. Two different types of axially chiral ligands, namely, non-C2-symmetric chiral phosphoric acids (CPAs) and 3,3'-disubstituted BINOLs, have been developed. The former enabled Pd(II)-catalyzed inter- and intramolecular arylation of unbiased methylene C(sp3)-H bonds with high enantioselectivity, whereas the latter promoted a series of asymmetric functionalization reactions, such as alkynylation, arylation, alkenylation/aza-Wacker cyclization, and intramolecular amidation. The unexpectedly high stereocontrol compared with other bidentate DGs might be attributable to steric communication between the ligand and gem-dimethyl moiety of PIP amine. Thus far, the combination of PIP amine DG with 3,3'-disubstituted BINOL ligands is arguably the most general strategy for asymmetric functionalization of unbiased methylene C(sp3)-H bonds. Finally, the ease of installation and removal of PIP under mild conditions and synthetic applications are described.
Collapse
Affiliation(s)
- Qi Zhang
- Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang 310027, China
| | - Bing-Feng Shi
- Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang 310027, China
| |
Collapse
|
15
|
Bera S, Biswas A, Samanta R. Straightforward Construction and Functionalizations of Nitrogen-Containing Heterocycles Through Migratory Insertion of Metal-Carbenes/Nitrenes. CHEM REC 2021; 21:3411-3428. [PMID: 33913245 DOI: 10.1002/tcr.202100061] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Revised: 04/10/2021] [Accepted: 04/12/2021] [Indexed: 12/15/2022]
Abstract
Nitrogen-containing heterocycles are widely found in various biologically active substrates, pharmaceuticals, natural products and organic materials. Consequently, the continuous effort has been devoted towards the development of straightforward, economical, environmentally acceptable, efficient and ingenious methods for the synthesis of various N-containing heterocycles and their functionalizations. Arguably, one of the most prominent direct strategy is regioselective C-H bond functionalizations which provide the step and atom economical approaches in the presence of suitable coupling partners. In this context, site-selective migratory insertion of metal carbenes/nitrenes to the desired C-H bonds has proven as a useful tool to access various functionalized nitrogen heterocycles. In this personal account, we highlight some of our contemporary development toward constructing N-containing heterocycles and their direct functionalizations via transition metal catalysed C-H bond functionalizations based on migratory insertion of metal-carbenes and nitrenes.
Collapse
Affiliation(s)
- Satabdi Bera
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur, 721302, West Bengal, India
| | - Aniruddha Biswas
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur, 721302, West Bengal, India
| | - Rajarshi Samanta
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur, 721302, West Bengal, India
| |
Collapse
|
16
|
Zhang H, Xu M, Liu N, Yang F. Copper‐Catalyzed Remote C5‐Selective Chlorination of 8‐Amidoquinolines Using Sulfonyl Chlorides as Cl Source. ChemistrySelect 2021. [DOI: 10.1002/slct.202100030] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Han Zhang
- Advanced Research Institute of Multidisciplinary Science Beijing Institute of Technology. 5 South Zhongguancun Street, Haidian District Beijing 100081 China
| | - Miao Xu
- Advanced Research Institute of Multidisciplinary Science Beijing Institute of Technology. 5 South Zhongguancun Street, Haidian District Beijing 100081 China
| | - Ningning Liu
- Advanced Research Institute of Multidisciplinary Science Beijing Institute of Technology. 5 South Zhongguancun Street, Haidian District Beijing 100081 China
| | - Fanzhi Yang
- Advanced Research Institute of Multidisciplinary Science Beijing Institute of Technology. 5 South Zhongguancun Street, Haidian District Beijing 100081 China
| |
Collapse
|
17
|
Strategic evolution in transition metal-catalyzed directed C–H bond activation and future directions. Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2020.213683] [Citation(s) in RCA: 93] [Impact Index Per Article: 31.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
18
|
Ahmad A, Dutta HS, Kumar M, Khan AA, Raziullah, Koley D. Pd-Catalyzed C-H Halogenation of Indolines and Tetrahydroquinolines with Removable Directing Group. Org Lett 2020; 22:5870-5875. [PMID: 32657591 DOI: 10.1021/acs.orglett.0c01963] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Pd-catalyzed directing-group-assisted regioselective halogenations to C7 of indolines and C8 of tetrahydroquinolines were achieved in good to excellent yields. The practicality and utility of the developed method have been illustrated by various functional group transformations such as arylation, alkenylation, cyanation, and silylation utilizing the installed synthetic handle. The concise synthesis of primaquine, an antimalarial drug, and formal syntheses of two bioactive natural products, hippadine and pratosine, have also been demonstrated.
Collapse
Affiliation(s)
- Ashfaq Ahmad
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, Lucknow 226031, India
| | | | - Mohit Kumar
- Academy of Scientific and Innovative Research, New Delhi 110001, India
| | - Afsar Ali Khan
- Academy of Scientific and Innovative Research, New Delhi 110001, India
| | - Raziullah
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, Lucknow 226031, India
| | - Dipankar Koley
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, Lucknow 226031, India.,Academy of Scientific and Innovative Research, New Delhi 110001, India
| |
Collapse
|
19
|
Remote C–H Functionalization of 8-Aminoquinoline Ring. Top Curr Chem (Cham) 2020; 378:42. [DOI: 10.1007/s41061-020-00303-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2020] [Accepted: 03/31/2020] [Indexed: 12/13/2022]
|
20
|
Chu M, Planas O, Company A, Ribas X, Hamilton A, Whiteoak CJ. Unravelling the mechanism of cobalt-catalysed remote C-H nitration of 8-aminoquinolinamides and expansion of substrate scope towards 1-naphthylpicolinamide. Chem Sci 2020; 11:534-542. [PMID: 32190273 PMCID: PMC7067239 DOI: 10.1039/c9sc05076k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2019] [Accepted: 11/16/2019] [Indexed: 11/21/2022] Open
Abstract
Previously, an unexpected Co-catalysed remote C-H nitration of 8-aminoquinolinamide compounds was developed. This report provided a novel reactivity for Co which was assumed to proceed through the mechanistic pathway already known for analogous Cu-catalysed remote couplings of the same substrates. In order to shed light into this intriguing, and previously unobserved reactivity for Co, a thorough computational study has now been performed, which has allowed for a full understanding of the operative mechanism. This study demonstrates that the Co-catalysed remote coupling does not occur through the previously proposed Single Electron Transfer (SET) mechanism, but actually operates through a high-spin induced remote radical coupling mechanism, through a key intermediate with significant proportion of spin density at the 5- and 7-positions of the aminoquinoline ring. Additionally, new experimental data provides expansion of the synthetic utility of the original nitration procedure towards 1-naphthylpicolinamide which unexpectedly appears to operate via a subtly different mechanism despite having a similar chelate environment.
Collapse
Affiliation(s)
- Melody Chu
- Department of Biosciences and Chemistry , Sheffield Hallam University , Sheffield , S1 1WB , UK . ;
| | - Oriol Planas
- Departament de Química , Grup de Química Bioinspirada, Supramolecular i Catàlisi (QBIS-CAT) , Institut de Química Computacional i Catàlisi (IQCC) , Universitat de Girona , Campus de Montilivi , 17071 Girona , Catalonia , Spain
| | - Anna Company
- Departament de Química , Grup de Química Bioinspirada, Supramolecular i Catàlisi (QBIS-CAT) , Institut de Química Computacional i Catàlisi (IQCC) , Universitat de Girona , Campus de Montilivi , 17071 Girona , Catalonia , Spain
| | - Xavi Ribas
- Departament de Química , Grup de Química Bioinspirada, Supramolecular i Catàlisi (QBIS-CAT) , Institut de Química Computacional i Catàlisi (IQCC) , Universitat de Girona , Campus de Montilivi , 17071 Girona , Catalonia , Spain
| | - Alex Hamilton
- Department of Biosciences and Chemistry , Sheffield Hallam University , Sheffield , S1 1WB , UK . ;
| | - Christopher J Whiteoak
- Department of Biosciences and Chemistry , Sheffield Hallam University , Sheffield , S1 1WB , UK . ;
| |
Collapse
|
21
|
Li D, Jia Z, Jiang Y, Jia J, Zhao X, Li Z, Xu Z. One‐Pot Functionalization of 8‐Aminoquinolines through the Acylation and Regioselective C5‐H Halogenation under Transition‐Metal‐Free Conditions. ChemistrySelect 2019. [DOI: 10.1002/slct.201904286] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Dandan Li
- School of Chemistry and Chemical EngineeringXuchang University No.88, Bayi Road, Xuchang Henan 461000 P. R. China
| | - Zhenzhen Jia
- School of Chemistry and Chemical EngineeringXuchang University No.88, Bayi Road, Xuchang Henan 461000 P. R. China
| | - Yongshuai Jiang
- School of Chemistry and Chemical EngineeringXuchang University No.88, Bayi Road, Xuchang Henan 461000 P. R. China
| | - Jingpeng Jia
- School of Chemistry and Chemical EngineeringXuchang University No.88, Bayi Road, Xuchang Henan 461000 P. R. China
| | - Xiaowei Zhao
- School of Chemistry and Chemical EngineeringXuchang University No.88, Bayi Road, Xuchang Henan 461000 P. R. China
| | - Zehui Li
- School of Chemistry and Chemical EngineeringXuchang University No.88, Bayi Road, Xuchang Henan 461000 P. R. China
| | - Zhihong Xu
- School of Chemistry and Chemical EngineeringXuchang University No.88, Bayi Road, Xuchang Henan 461000 P. R. China
| |
Collapse
|
22
|
Kumar V, Banert K, Ray D, Saha B. An atom-economical and regioselective metal-free C-5 chalcogenation of 8-aminoquinolines under mild conditions. Org Biomol Chem 2019; 17:10245-10250. [PMID: 31793609 DOI: 10.1039/c9ob02235j] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
A general and simple metal-free protocol for expedient C-H functionalization leading to the regioselective generation of C-5 chalcogenated 8-aminoquinoline analogues in up to 90% yield at room temperature (25 °C) has been established. This methodology is an eco-friendly approach to the atom-economical utilization of diaryl/dialkyl chalcogenides for direct access to chalcogenated quinolines and is scalable to the gram scale without considerable decrease in the yield of the product. It represents a practical alternative to the existing metal-catalyzed functionalization of 8-aminoquinoline derivatives with broad functional group tolerance. The controlled experiments suggest that the reaction possibly proceeds through an ionic pathway at room temperature. Furthermore, the potentiality for the functionalization of free amines in chalcogenated-8-aminoquinolines provides an attractive perspective for further elaboration of the amine substituent through chemical manipulations. The applicability of the standardized method has been augmented through late-stage antimalarial drug diversification of primaquine analogues.
Collapse
Affiliation(s)
- Vipin Kumar
- Amity Institute of Click Chemistry Research and Studies, Amity University, Sector 125, Noida 201313, Uttar Pradesh, India
| | - Klaus Banert
- Chemnitz University of Technology, Organic Chemistry, Strasse der Nationen 62, 09111 Chemnitz, Germany
| | - Devalina Ray
- Amity Institute of Biotechnology, Amity University, Sector 125, Noida 201313, Uttar Pradesh, India.
| | - Biswajit Saha
- Amity Institute of Biotechnology, Amity University, Sector 125, Noida 201313, Uttar Pradesh, India.
| |
Collapse
|
23
|
Gu L, Fang X, Weng Z, Lin J, He M, Ma W. PIDA‐Promoted Selective C
5
C−H Selenylations of Indolines
via
Weak Interactions. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201900766] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Linghui Gu
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of AntibioticsChengdu University People's Republic of China Chengdu 610052
| | - Xinyue Fang
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of AntibioticsChengdu University People's Republic of China Chengdu 610052
| | - Zhengyun Weng
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of AntibioticsChengdu University People's Republic of China Chengdu 610052
| | - Jiafu Lin
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of AntibioticsChengdu University People's Republic of China Chengdu 610052
| | - Meicui He
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of AntibioticsChengdu University People's Republic of China Chengdu 610052
| | - Wenbo Ma
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of AntibioticsChengdu University People's Republic of China Chengdu 610052
| |
Collapse
|
24
|
Zhu L, Sheng X, Li Y, Lu D, Qiu R, Kambe N. Nickel-Catalyzed Remote C4–H Arylation of 8-Aminoquinolines. Org Lett 2019; 21:6785-6789. [DOI: 10.1021/acs.orglett.9b02403] [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)
- Longzhi Zhu
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, PR China
| | - Xinghao Sheng
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, PR China
| | - You Li
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, PR China
| | - Dong Lu
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, PR China
| | - Renhua Qiu
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, PR China
| | - Nobuaki Kambe
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, PR China
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
| |
Collapse
|
25
|
Sen C, Sahoo T, Singh H, Suresh E, Ghosh SC. Visible Light-Promoted Photocatalytic C-5 Carboxylation of 8-Aminoquinoline Amides and Sulfonamides via a Single Electron Transfer Pathway. J Org Chem 2019; 84:9869-9896. [PMID: 31307188 DOI: 10.1021/acs.joc.9b00942] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
An efficient photocatalytic method was developed for the remote C5-H bond carboxylation of 8-aminoquinoline amide and sulfonamide derivatives. This methodology uses in situ generated •CBr3 radical as a carboxylation agent with alcohol and is further extended to a variety of arenes and heteroarenes to synthesize the desired carboxylated product in moderate-to-good yields. The reaction proceeding through a single electron transfer pathway was established by a control experiment, and a butylated hydroxytoluene-trapped aryl radical cation intermediate in high-resolution mass spectrometry was identified.
Collapse
|
26
|
Shu Q, Li Y, Liu T, Zhang S, Jiang L, Jin K, Zhang R, Duan C. Visible light induced regioselective C5 halogenation of 8-aminoquinolines with 1,3-dihalo-5,5-dimethylhydantoin in continuous flow. Tetrahedron 2019. [DOI: 10.1016/j.tet.2019.05.037] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
|
27
|
Kang Y, Zhang P, Li M, Chen Y, Xu H, Zhao J, Sun W, Yu J, Lu Y. Ligand‐Promoted Rh
III
‐Catalyzed Thiolation of Benzamides with a Broad Disulfide Scope. Angew Chem Int Ed Engl 2019; 58:9099-9103. [DOI: 10.1002/anie.201903511] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2019] [Revised: 04/28/2019] [Indexed: 01/12/2023]
Affiliation(s)
- Yan‐Shang Kang
- Coordination Chemistry InstituteState Key Laboratory of Coordination ChemistrySchool of Chemistry and Chemical EngineeringNanjing National Laboratory of MicrostructuresCollaborative Innovation Center of Advanced MicrostructuresNanjing University Nanjing 210023 China
| | - Ping Zhang
- Coordination Chemistry InstituteState Key Laboratory of Coordination ChemistrySchool of Chemistry and Chemical EngineeringNanjing National Laboratory of MicrostructuresCollaborative Innovation Center of Advanced MicrostructuresNanjing University Nanjing 210023 China
| | - Min‐Yan Li
- Department of ChemistryThe Scripps Research Institute 10550 N. Torrey Pines Road La Jolla CA 92037 USA
| | - You‐Ke Chen
- Coordination Chemistry InstituteState Key Laboratory of Coordination ChemistrySchool of Chemistry and Chemical EngineeringNanjing National Laboratory of MicrostructuresCollaborative Innovation Center of Advanced MicrostructuresNanjing University Nanjing 210023 China
| | - Hua‐Jin Xu
- Coordination Chemistry InstituteState Key Laboratory of Coordination ChemistrySchool of Chemistry and Chemical EngineeringNanjing National Laboratory of MicrostructuresCollaborative Innovation Center of Advanced MicrostructuresNanjing University Nanjing 210023 China
| | - Jing Zhao
- Coordination Chemistry InstituteState Key Laboratory of Coordination ChemistrySchool of Chemistry and Chemical EngineeringNanjing National Laboratory of MicrostructuresCollaborative Innovation Center of Advanced MicrostructuresNanjing University Nanjing 210023 China
| | - Wei‐Yin Sun
- Coordination Chemistry InstituteState Key Laboratory of Coordination ChemistrySchool of Chemistry and Chemical EngineeringNanjing National Laboratory of MicrostructuresCollaborative Innovation Center of Advanced MicrostructuresNanjing University Nanjing 210023 China
| | - Jin‐Quan Yu
- Department of ChemistryThe Scripps Research Institute 10550 N. Torrey Pines Road La Jolla CA 92037 USA
| | - Yi Lu
- Coordination Chemistry InstituteState Key Laboratory of Coordination ChemistrySchool of Chemistry and Chemical EngineeringNanjing National Laboratory of MicrostructuresCollaborative Innovation Center of Advanced MicrostructuresNanjing University Nanjing 210023 China
| |
Collapse
|
28
|
Kang Y, Zhang P, Li M, Chen Y, Xu H, Zhao J, Sun W, Yu J, Lu Y. Ligand‐Promoted Rh
III
‐Catalyzed Thiolation of Benzamides with a Broad Disulfide Scope. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201903511] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Yan‐Shang Kang
- Coordination Chemistry InstituteState Key Laboratory of Coordination ChemistrySchool of Chemistry and Chemical EngineeringNanjing National Laboratory of MicrostructuresCollaborative Innovation Center of Advanced MicrostructuresNanjing University Nanjing 210023 China
| | - Ping Zhang
- Coordination Chemistry InstituteState Key Laboratory of Coordination ChemistrySchool of Chemistry and Chemical EngineeringNanjing National Laboratory of MicrostructuresCollaborative Innovation Center of Advanced MicrostructuresNanjing University Nanjing 210023 China
| | - Min‐Yan Li
- Department of ChemistryThe Scripps Research Institute 10550 N. Torrey Pines Road La Jolla CA 92037 USA
| | - You‐Ke Chen
- Coordination Chemistry InstituteState Key Laboratory of Coordination ChemistrySchool of Chemistry and Chemical EngineeringNanjing National Laboratory of MicrostructuresCollaborative Innovation Center of Advanced MicrostructuresNanjing University Nanjing 210023 China
| | - Hua‐Jin Xu
- Coordination Chemistry InstituteState Key Laboratory of Coordination ChemistrySchool of Chemistry and Chemical EngineeringNanjing National Laboratory of MicrostructuresCollaborative Innovation Center of Advanced MicrostructuresNanjing University Nanjing 210023 China
| | - Jing Zhao
- Coordination Chemistry InstituteState Key Laboratory of Coordination ChemistrySchool of Chemistry and Chemical EngineeringNanjing National Laboratory of MicrostructuresCollaborative Innovation Center of Advanced MicrostructuresNanjing University Nanjing 210023 China
| | - Wei‐Yin Sun
- Coordination Chemistry InstituteState Key Laboratory of Coordination ChemistrySchool of Chemistry and Chemical EngineeringNanjing National Laboratory of MicrostructuresCollaborative Innovation Center of Advanced MicrostructuresNanjing University Nanjing 210023 China
| | - Jin‐Quan Yu
- Department of ChemistryThe Scripps Research Institute 10550 N. Torrey Pines Road La Jolla CA 92037 USA
| | - Yi Lu
- Coordination Chemistry InstituteState Key Laboratory of Coordination ChemistrySchool of Chemistry and Chemical EngineeringNanjing National Laboratory of MicrostructuresCollaborative Innovation Center of Advanced MicrostructuresNanjing University Nanjing 210023 China
| |
Collapse
|
29
|
Zhang Q, Shi B. From Reactivity and Regioselectivity to Stereoselectivity: An Odyssey of Designing PIP Amine and Related Directing Groups for C—H Activation. CHINESE J CHEM 2019. [DOI: 10.1002/cjoc.201900090] [Citation(s) in RCA: 115] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Qi Zhang
- Department of ChemistryZhejiang University Hangzhou Zhejiang 310027 China
| | - Bing‐Feng Shi
- Department of ChemistryZhejiang University Hangzhou Zhejiang 310027 China
| |
Collapse
|
30
|
Niu T, Xu J, Ren B, Liu J, Hu G. Iron‐Catalyzed Regioselective C5‐H Benzylation of 8‐Aminoquinolines with Benzylic Acetates. ChemistrySelect 2019. [DOI: 10.1002/slct.201900664] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Tian‐Jing Niu
- School of Chemical Engineering and EnergyZhengzhou University Zhengzhou 450001 China
| | - Jin‐Di Xu
- School of Chemical Engineering and EnergyZhengzhou University Zhengzhou 450001 China
| | - Bao‐Zeng Ren
- School of Chemical Engineering and EnergyZhengzhou University Zhengzhou 450001 China
| | - Jing‐Hui Liu
- School of Chemical Engineering and EnergyZhengzhou University Zhengzhou 450001 China
| | - Guo‐Qin Hu
- School of Chemical Engineering and EnergyZhengzhou University Zhengzhou 450001 China
| |
Collapse
|
31
|
Liang T, He X, Ji D, Wu H, Xu Y, Li Y, Wang Z, Xu Y, Zhu Q. Transition Metal-Free C5 Tosyloxylation of 8-Aminoquinolines with Phenyliodine Bistrifluoroacetate and Substituted 1,2-Disulfonyl Hydrazides. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900092] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Tingting Liang
- State Key Laboratory of Natural Medicines; China Pharmaceutical University; Nanjing 211198 China
- Jiangsu Key Laboratory of Drug Design and Optimization; Department of Medicinal Chemistry; China Pharmaceutical University; Nanjing 211198 China
| | - Xin He
- State Key Laboratory of Natural Medicines; China Pharmaceutical University; Nanjing 211198 China
- Changzhou Vocational Institute of Engineering; Changzhou 213164, China
| | - Dezhong Ji
- State Key Laboratory of Natural Medicines; China Pharmaceutical University; Nanjing 211198 China
- Jiangsu Key Laboratory of Drug Design and Optimization; Department of Medicinal Chemistry; China Pharmaceutical University; Nanjing 211198 China
| | - Huanhuan Wu
- State Key Laboratory of Natural Medicines; China Pharmaceutical University; Nanjing 211198 China
| | - Yizhu Xu
- State Key Laboratory of Natural Medicines; China Pharmaceutical University; Nanjing 211198 China
| | - Yuyan Li
- Jiangsu Key Laboratory of Drug Design and Optimization; Department of Medicinal Chemistry; China Pharmaceutical University; Nanjing 211198 China
| | - Zhibin Wang
- Jiangsu Key Laboratory of Drug Design and Optimization; Department of Medicinal Chemistry; China Pharmaceutical University; Nanjing 211198 China
| | - Yungen Xu
- State Key Laboratory of Natural Medicines; China Pharmaceutical University; Nanjing 211198 China
- Jiangsu Key Laboratory of Drug Design and Optimization; Department of Medicinal Chemistry; China Pharmaceutical University; Nanjing 211198 China
| | - Qihua Zhu
- State Key Laboratory of Natural Medicines; China Pharmaceutical University; Nanjing 211198 China
- Jiangsu Key Laboratory of Drug Design and Optimization; Department of Medicinal Chemistry; China Pharmaceutical University; Nanjing 211198 China
| |
Collapse
|
32
|
Xiong J, Liu Y. Transition‐Metal‐free C5, C7‐Dihalogenation and the Switchable C5 Halogenation of 8‐Hydroxyquinolines. ChemistrySelect 2019. [DOI: 10.1002/slct.201803965] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Jin Xiong
- College of Chemistry and Chemical EngineeringJiangxi Normal University Nanchang 330022 P. R. China
| | - Yunyun Liu
- College of Chemistry and Chemical EngineeringJiangxi Normal University Nanchang 330022 P. R. China
| |
Collapse
|
33
|
|
34
|
Affiliation(s)
- Susmita Mondal
- Department of Chemistry, Visva-Bharati (A Central University), Santiniketan 731235, India
| | - Alakananda Hajra
- Department of Chemistry, Visva-Bharati (A Central University), Santiniketan 731235, India
| |
Collapse
|
35
|
Zhao R, Yang Y, Wang X, Ren P, Zhang Q, Li D. An efficient nickel/silver co-catalyzed remote C–H amination of 8-aminoquinolines with azodicarboxylates at room temperature. RSC Adv 2018; 8:37064-37068. [PMID: 35557799 PMCID: PMC9088955 DOI: 10.1039/c8ra07647b] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2018] [Accepted: 10/30/2018] [Indexed: 01/09/2023] Open
Abstract
A highly efficient nickel/silver co-catalyzed C–H amination at the C5 position of 8-aminoquinolines with azodicarboxylates at room temperature is reported. The reaction undergoes a self-redox process without the necessity of external oxidant. It proceeded under simple and mild conditions without any additional ligand, base or oxidant and provided the desired products in good to excellent yields. This method also possessed the merits of good functional group compatibility and air and moisture tolerance. It provides an efficient strategy for the synthesis of useful quinoline derivatives. C–H amination at the C5 position of 8-aminoquinolines with azodicarboxylates proceeded efficiently using a nickel/silver co-catalyst at room temperature without any additional ligand, base or oxidant.![]()
Collapse
Affiliation(s)
- Ruinan Zhao
- School of Materials and Chemical Engineering
- Hubei University of Technology
- Wuhan 430068
- China
| | - Yaocheng Yang
- School of Materials and Chemical Engineering
- Hubei University of Technology
- Wuhan 430068
- China
| | - Xia Wang
- School of Materials and Chemical Engineering
- Hubei University of Technology
- Wuhan 430068
- China
| | - Peng Ren
- School of Science
- Harbin Institute of Technology (Shenzhen)
- Shenzhen 518055
- China
- Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education)
| | - Qian Zhang
- School of Materials and Chemical Engineering
- Hubei University of Technology
- Wuhan 430068
- China
| | - Dong Li
- School of Materials and Chemical Engineering
- Hubei University of Technology
- Wuhan 430068
- China
| |
Collapse
|