1
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Mandal S, Barman M, Debnath B, Punniyamurthy T. Dual C(sp 3)-H and C(sp 2)-H Activation of 8-Methylquinoline N-Oxides: A Route to Access C7-H Bond. Org Lett 2024; 26:7560-7564. [PMID: 39230580 DOI: 10.1021/acs.orglett.4c02584] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/05/2024]
Abstract
A Pd(II)-catalyzed regioselective dual C(sp3)-H/C7(sp2)-H activation and annulation of 8-methylquinoline N-oxides with maleimide has been accomplished. The use of N-oxide as a weak directing group under Pd(II)-complex catalysis activates the initial C(sp3)-H and triggers a relayed, second C7(sp2)-H activation. The dual C-H bond activation, [3 + 2]-annulation, facile introduction and removal of the directing group, substrate scope, and functional group diversity are the important practical features.
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Affiliation(s)
- Santu Mandal
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, 781039, India
| | - Madhab Barman
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, 781039, India
| | - Bijoy Debnath
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, 781039, India
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2
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Gi M, Oh D, Yang S, Lee J, Jung SH, Baek JH, Ha MW, Lee G, Park HG. Enantioselective Michael addition of 3-hydroxy-2-pyridone to nitroolefins using cinchona-derived bifunctional organocatalysts. Org Biomol Chem 2024; 22:7017-7023. [PMID: 39139027 DOI: 10.1039/d4ob01042f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/15/2024]
Abstract
Despite the extensive use of N-heteroarenes in pharmaceuticals and natural products, efficient methods for selective alkylation at the C-4 position of 2-pyridone are scarce. We developed an enantioselective Michael addition of 3-hydroxy-2-pyridone to nitroolefins at the C-4 position using cinchona-derived bifunctional squaramide organocatalysts, achieving up to 95% yield and >99% ee. This selectivity is driven by the bifunctional organocatalysts' hydrogen bonding interactions with 3-hydroxy-2-pyridone and nitroolefins under mild conditions. This method demonstrates the Michael reaction's versatility with various nitroolefins, providing a sustainable approach for synthesizing chiral N-heteroarenes with high enantioselectivity and regioselectivity under environmentally friendly conditions.
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Affiliation(s)
- Minseok Gi
- Research Institute of Pharmaceutical Sciences and College of Pharmacy, Seoul National University, Seoul 08826, Korea.
| | - Daehyun Oh
- Research Institute of Pharmaceutical Sciences and College of Pharmacy, Seoul National University, Seoul 08826, Korea.
| | - Sehun Yang
- Research Institute of Pharmaceutical Sciences and College of Pharmacy, Seoul National University, Seoul 08826, Korea.
| | - Jaeyong Lee
- Research Institute of Pharmaceutical Sciences and College of Pharmacy, Seoul National University, Seoul 08826, Korea.
| | - So Hyun Jung
- Research Institute of Pharmaceutical Sciences and College of Pharmacy, Seoul National University, Seoul 08826, Korea.
| | - Ju Ha Baek
- Research Institute of Pharmaceutical Sciences and College of Pharmacy, Seoul National University, Seoul 08826, Korea.
| | - Min Woo Ha
- Jeju Research Institute of Pharmaceutical Sciences, College of Pharmacy, Jeju National University, Jeju 63243, Republic of Korea
| | - Geumwoo Lee
- Research Institute of Pharmaceutical Sciences and College of Pharmacy, Seoul National University, Seoul 08826, Korea.
| | - Hyeung-Geun Park
- Research Institute of Pharmaceutical Sciences and College of Pharmacy, Seoul National University, Seoul 08826, Korea.
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3
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Zuo Y, Zuo P, Liu M, Wang X, Du J, Li X, Zhang P, Xu Z. Recent approaches for the synthesis of heterocycles from amidines via a metal catalyzed C-H functionalization reaction. Org Biomol Chem 2024; 22:5014-5031. [PMID: 38831700 DOI: 10.1039/d4ob00420e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2024]
Abstract
Transition metal catalyzed C-H bond activation has become one of the most important tools for constructing new chemical bonds. Introducing directing groups to the substrates is the key to a successful reaction, these directing groups can also be further transformed in the reaction. Amidines with their unique structure and reactivity are ideal substrates for transition metal-catalyzed C-H transformations. This review describes the major advances and mechanistic investigations of the C-H activation/annulation tandem reactions of amidines until early 2024, focusing on metal-catalyzed C-H activation of amidines with unsaturated compounds, such as alkynes, ketone, vinylene carbonate, cyclopropanols and their derivatives. Meanwhile this manuscript also explores the reaction of amidines with different carbene precursors, for example diazo compounds, azide, triazoles, pyriodotriazoles, and sulfoxonium ylides as well as their own C-H bond activation/cyclization reactions. A bright outlook is provided at the end of the manuscript.
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Affiliation(s)
- Youpeng Zuo
- School of Chemistry and Chemical Engineering, Suzhou University, Suzhou, Anhui 234000, People's Republic of China.
| | - Pengfei Zuo
- Kunshan Customs, Kunshan, Jiangsu 215300, People's Republic of China
| | - Meijun Liu
- School of Chemistry and Chemical Engineering, Suzhou University, Suzhou, Anhui 234000, People's Republic of China.
| | - Xiaoqing Wang
- School of Chemistry and Chemical Engineering, Suzhou University, Suzhou, Anhui 234000, People's Republic of China.
| | - Jun Du
- School of Chemistry and Chemical Engineering, Suzhou University, Suzhou, Anhui 234000, People's Republic of China.
| | - Xiaoling Li
- School of Chemistry and Chemical Engineering, Suzhou University, Suzhou, Anhui 234000, People's Republic of China.
| | - Pinghua Zhang
- School of Chemistry and Chemical Engineering, Suzhou University, Suzhou, Anhui 234000, People's Republic of China.
| | - Zhenhua Xu
- School of Chemistry and Chemical Engineering, Suzhou University, Suzhou, Anhui 234000, People's Republic of China.
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4
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Dethe DH, Kumar V, Datta A. Ru(II)-Catalyzed C-H Alkylation of N-Benzyltriflamide with Maleimides: Synthesis of o-Succinimide Substituted Benzaldehydes. Chemistry 2024:e202401301. [PMID: 38864751 DOI: 10.1002/chem.202401301] [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: 04/02/2024] [Revised: 06/12/2024] [Accepted: 06/12/2024] [Indexed: 06/13/2024]
Abstract
A ruthenium-catalyzed N-benzyltriflamide assisted C-H alkylation with maleimide followed by hydrolysis of in situ generated imine has been developed for the first time. This synthetic method results in the efficient synthesis of o-succinimide derivatives of benzaldehydes. This reaction involves less expensive and mild reaction conditions and shows excellent site selectivity and good functional group compatibility.
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Affiliation(s)
- Dattatraya H Dethe
- Department of Chemistry, Indian Institute of Technology, Kanpur, Kanpur, 208016, India
| | - Vimlesh Kumar
- Department of Chemistry, Indian Institute of Technology, Kanpur, Kanpur, 208016, India
| | - Arnadeep Datta
- Department of Chemistry, Indian Institute of Technology, Kanpur, Kanpur, 208016, India
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5
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Meena N, Nipate DS, Swami PN, Rangan K, Kumar A. Ru(II)-Catalyzed [4 + 2]-Annulation of 2-Alkenyl/Arylimidazoles with N-Substituted Maleimides and 1,4-Naphthoquinones: Access to Imidazo-Fused Polyheterocycles. J Org Chem 2024; 89:2272-2282. [PMID: 38305185 DOI: 10.1021/acs.joc.3c02229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2024]
Abstract
Synthesis of imidazo-fused polyheterocyclic molecular frameworks, viz. imidazo[1,2-a]pyrrolo[3,4-e]pyridines, imidazo[2,1-a]pyrrolo[3,4-c]isoquinolines, and benzo[g]imidazo[1,2-a]quinoline-6,11-diones, has been achieved by the ruthenium(II)-catalyzed [4 + 2] C-H/N-H annulation of 2-alkenyl/2-arylimidazoles with N-substituted maleimides and 1,4-naphthoquinones. The developed protocol is operationally simple, exhibits broad substrate scope with excellent functional group tolerance, and provides the desired products in moderate to good yields. The mechanistic studies suggest that the reaction involves the formation of a C-C bond through Ru-catalyzed C(sp2)-H bond activation followed by intramolecular cyclization.
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Affiliation(s)
- Neha Meena
- Department of Chemistry, Birla Institute of Technology and Science Pilani, Pilani, Rajasthan 333031, India
| | - Dhananjay S Nipate
- Department of Chemistry, Birla Institute of Technology and Science Pilani, Pilani, Rajasthan 333031, India
| | - Prakash N Swami
- Department of Chemistry, Birla Institute of Technology and Science Pilani, Pilani, Rajasthan 333031, India
| | - Krishnan Rangan
- Department of Chemistry, Birla Institute of Technology and Science Pilani, Hyderabad, Telangana 500078, India
| | - Anil Kumar
- Department of Chemistry, Birla Institute of Technology and Science Pilani, Pilani, Rajasthan 333031, India
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6
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Zuo Y, Liu M, Du J, Zhang T, Wang X, Wang C. Ir(iii)/Ag(i)-catalyzed directly C-H amidation of arenes with OH-free hydroxyamides as amidating agents. RSC Adv 2024; 14:5975-5980. [PMID: 38362076 PMCID: PMC10867557 DOI: 10.1039/d4ra00517a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2024] [Accepted: 02/09/2024] [Indexed: 02/17/2024] Open
Abstract
A versatile Ir(iii)-catalyzed C-H amidation of arenes by employing readily available and stable OH-free hydroxyamides as a novel amidation source. The reaction occurred with high efficiency and tolerance of a range of functional groups. A wide scope of aryl OH-free hydroxyzamides, including conjugated and challenging non-conjugated OH-free hydroxyzamides, were capable of this transformation and no addition of an external oxidant is required. This protocol provided a simple, straightforward and economic method to a variety N-(2-(1H-pyrazol-1-yl)alkyl)amide derivates with good to excellent yield. Mechanistic study demonstrated that reversible C-H bond functionalisation might be involved in this reaction.
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Affiliation(s)
- Youpeng Zuo
- School of Chemistry and Chemical Engineering, Suzhou University Suzhou 234000 P. R. China
| | - Meijun Liu
- School of Chemistry and Chemical Engineering, Suzhou University Suzhou 234000 P. R. China
| | - Jun Du
- School of Chemistry and Chemical Engineering, Suzhou University Suzhou 234000 P. R. China
| | - Tianren Zhang
- School of Chemistry and Chemical Engineering, Suzhou University Suzhou 234000 P. R. China
| | - Xiaoqing Wang
- School of Chemistry and Chemical Engineering, Suzhou University Suzhou 234000 P. R. China
| | - Cong Wang
- School of Chemistry and Chemical Engineering, Suzhou University Suzhou 234000 P. R. China
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7
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Shirisha T, Majhi S, Balasubramanian S, Kashinath D. Metal-free C(sp 3)-H functionalization (C-C and C-N bond formation) of 1,2,3,4-tetrahydroacridines using deep eutectic solvents as catalyst and reaction medium. Org Biomol Chem 2024; 22:1434-1440. [PMID: 38265125 DOI: 10.1039/d3ob01752d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2024]
Abstract
Herein, we report a metal-free and efficient method for the C(sp3)-H functionalization of 1,2,3,4-tetrahydroacridines at the C4-position by the addition of azodicarboxylates (C-N bond) and maleimides (C-C bond) using deep eutectic solvents (DESs) at 80 °C. The C4-functionalized 1,2,3,4-tetrahydroacridines were achieved with high atom efficiency, precise regioselectivity, and yields ranging from 70-96%. The practicality of the developed method has been demonstrated through gram-scale synthesis. Also the green-metrics were calculated for the developed method and it was found that the metrics are near to the ideal values.
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Affiliation(s)
| | - Subir Majhi
- Department of Chemistry, National Institute of Technology, Warangal-506 004, India.
| | - Sridhar Balasubramanian
- Centre for X-ray Crystallography, Department of Analytical & Structural Chemistry, CSIR-Indian Institute of Chemical Technology, Tarnaka, Uppal Road, Hyderabad-500007, Telangana, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201 002, India
| | - Dhurke Kashinath
- Department of Chemistry, National Institute of Technology, Warangal-506 004, India.
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8
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Chen Y, Lu Z, He W, Zhu H, Lu W, Shi J, Sheng J, Xie W. Rhodium-catalyzed annulation of hydrazines with vinylene carbonate to synthesize unsubstituted 1-aminoindole derivatives. RSC Adv 2024; 14:4804-4809. [PMID: 38323018 PMCID: PMC10844929 DOI: 10.1039/d3ra07466h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Accepted: 01/30/2024] [Indexed: 02/08/2024] Open
Abstract
Herein, we describe rhodium-catalysed C-H bond activation for [3 + 2] annulation using hydrazide and vinylene carbonate, providing an efficient method for synthesising unsubstituted 1-aminoindole compounds. Characterised by high yields, mild reaction conditions, and no need for external oxidants, this transformation demonstrates excellent regioselectivity and a wide tolerance for various functional groups.
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Affiliation(s)
- Yichun Chen
- School of Environment and Chemical Engineering, Foshan University Foshan 528000 China
| | - Ziqi Lu
- School of Environment and Chemical Engineering, Foshan University Foshan 528000 China
| | - Wenfen He
- School of Environment and Chemical Engineering, Foshan University Foshan 528000 China
| | - Huanyi Zhu
- School of Environment and Chemical Engineering, Foshan University Foshan 528000 China
| | - Weilong Lu
- School of Environment and Chemical Engineering, Foshan University Foshan 528000 China
| | - Junjun Shi
- School of Environment and Chemical Engineering, Foshan University Foshan 528000 China
| | - Jie Sheng
- School of Environment and Chemical Engineering, Foshan University Foshan 528000 China
| | - Wucheng Xie
- School of Environment and Chemical Engineering, Foshan University Foshan 528000 China
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9
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Nipate DS, Meena N, Swami PN, Rangan K, Kumar A. Rh(III)-catalyzed oxidative [4+2] annulation of 2-arylquinoxalines and 2-aryl-2 H-indazoles with allyl alcohols. Chem Commun (Camb) 2024; 60:344-347. [PMID: 38078491 DOI: 10.1039/d3cc04600a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2024]
Abstract
Synthesis of functionalized benzo[a]phenazines and indazolo[2,3-a]quinolines has been developed through Rh(III)-catalyzed oxidative annulation of 2-arylquinoxalines and 2-aryl-2H-indazoles with allyl alcohols, respectively. The method features a broad substrate scope, excellent functional group tolerance, good to high yields of annulated products, and scaled-up synthesis capability. Based on a preliminary mechanistic investigation, a tentative mechanism of annulation reaction has been proposed.
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Affiliation(s)
- Dhananjay S Nipate
- Department of Chemistry, Birla Institute of Technology and Science Pilani, Pilani Campus, Rajasthan, 333031, India.
| | - Neha Meena
- Department of Chemistry, Birla Institute of Technology and Science Pilani, Pilani Campus, Rajasthan, 333031, India.
| | - Prakash N Swami
- Department of Chemistry, Birla Institute of Technology and Science Pilani, Pilani Campus, Rajasthan, 333031, India.
| | - Krishnan Rangan
- Department of Chemistry, Birla Institute of Technology and Science Pilani, Hyderabad Campus, Telangana, 500078, India
| | - Anil Kumar
- Department of Chemistry, Birla Institute of Technology and Science Pilani, Pilani Campus, Rajasthan, 333031, India.
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10
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Shah TA, Sarkar T, Kar S, Maharana PK, Talukdar K, Punniyamurthy T. Transition-Metal-Catalyzed Directed C-H Functionalization in/on Water. Chem Asian J 2024; 19:e202300815. [PMID: 37932013 DOI: 10.1002/asia.202300815] [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: 09/19/2023] [Indexed: 11/08/2023]
Abstract
Directing group assisted C-H bond functionalization using transition-metal-catalysis has emerged as a reliable synthetic tool for the construction of regioselective carbon-carbon/heteroatom bonds. Off late, "in/on water directed transition-metal-catalysis", though still underdeveloped, has appeared as one of the prominent themes in sustainable organic chemistry. This article covers the advancements, mechanistic insights and application of the sustainable directed C-H bond functionalization of (hetero)arenes in/on water in the presence of transition-metal-catalysis.
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Affiliation(s)
- Tariq A Shah
- Department of Chemistry and Advanced Material Chemistry Center (AMCC), Khalifa University, PO Box, 127788, Abu Dhabi, U.A.E
| | - Tanumay Sarkar
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, 781039, India
| | - Subhradeep Kar
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, 781039, India
| | - Prabhat Kumar Maharana
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, 781039, India
| | - Kangkan Talukdar
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, 781039, India
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11
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Yang L, Liang X, Ding Y, Li X, Li X, Zeng Q. Transition Metal-Catalyzed Enantioselective Synthesis of Chiral Five- and Six-Membered Benzo O-heterocycles. CHEM REC 2023; 23:e202300173. [PMID: 37401804 DOI: 10.1002/tcr.202300173] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Revised: 06/22/2023] [Indexed: 07/05/2023]
Abstract
Enantiomerically enriched five- and six-membered benzo oxygen heterocycles are privileged architectures in functional organic molecules. Over the last several years, many effective methods have been established to access these compounds. However, comprehensive documents cover updated methodologies still in highly demand. In this review, recent transition metal catalyzed transformations lead to chiral five- and six-membered benzo oxygen heterocycles are presented. The mechanism and chirality transfer or control processes are also discussed in details.
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Affiliation(s)
- Lu Yang
- Key Laboratory of General Chemistry of the National Ethnic Affairs Commission, Key Laboratory of Pollution Control Chemistry and Environmental Functional Materials for Qinghai-Tibet Plateau of the National Ethnic Affairs Commission, School of Chemistry and Environment, Southwest Minzu University, Chengdu, 610041, People's Republic of China
| | - Xiayu Liang
- College of Materials, Chemistry & Chemical Engineering, Chengdu, 610059, People's Republic of China
| | - Yuyang Ding
- Key Laboratory of General Chemistry of the National Ethnic Affairs Commission, Key Laboratory of Pollution Control Chemistry and Environmental Functional Materials for Qinghai-Tibet Plateau of the National Ethnic Affairs Commission, School of Chemistry and Environment, Southwest Minzu University, Chengdu, 610041, People's Republic of China
| | - Xinran Li
- Key Laboratory of General Chemistry of the National Ethnic Affairs Commission, Key Laboratory of Pollution Control Chemistry and Environmental Functional Materials for Qinghai-Tibet Plateau of the National Ethnic Affairs Commission, School of Chemistry and Environment, Southwest Minzu University, Chengdu, 610041, People's Republic of China
| | - Xuefeng Li
- Key Laboratory of General Chemistry of the National Ethnic Affairs Commission, Key Laboratory of Pollution Control Chemistry and Environmental Functional Materials for Qinghai-Tibet Plateau of the National Ethnic Affairs Commission, School of Chemistry and Environment, Southwest Minzu University, Chengdu, 610041, People's Republic of China
| | - Qingle Zeng
- College of Materials, Chemistry & Chemical Engineering, Chengdu, 610059, People's Republic of China
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12
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Singh Chauhan AN, Mali G, Dua G, Samant P, Kumar A, Erande RD. [RhCp*Cl 2] 2-Catalyzed Indole Functionalization: Synthesis of Bioinspired Indole-Fused Polycycles. ACS OMEGA 2023; 8:27894-27919. [PMID: 37576617 PMCID: PMC10413382 DOI: 10.1021/acsomega.3c02510] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Accepted: 07/11/2023] [Indexed: 08/15/2023]
Abstract
Polycyclic fused indoles are ubiquitous in natural products and pharmaceuticals due to their immense structural diversity and biological inference, making them suitable for charting broader chemical space. Indole-based polycycles continue to be fascinating as well as challenging targets for synthetic fabrication because of their characteristic structural frameworks possessing biologically intriguing compounds of both natural and synthetic origin. As a result, an assortment of new chemical processes and catalytic routes has been established to provide unified access to these skeletons in a very efficient and selective manner. Transition-metal-catalyzed processes, in particular from rhodium(III), are widely used in synthetic endeavors to increase molecular complexity efficiently. In recent years, this has resulted in significant progress in reaching molecular scaffolds with enormous biological activity based on core indole skeletons. Additionally, Rh(III)-catalyzed direct C-H functionalization and benzannulation protocols of indole moieties were one of the most alluring synthetic techniques to generate indole-fused polycyclic molecules efficiently. This review sheds light on recent developments toward synthesizing fused indoles by cascade annulation methods using Rh(III)-[RhCp*Cl2]2-catalyzed pathways, which align with the comprehensive and sophisticated developments in the field of Rh(III)-catalyzed indole functionalization. Here, we looked at a few intriguing cascade-based synthetic designs catalyzed by Rh(III) that produced elaborate frameworks inspired by indole bioactivity. The review also strongly emphasizes mechanistic insights for reaching 1-2, 2-3, and 3-4-fused indole systems, focusing on Rh(III)-catalyzed routes. With an emphasis on synthetic efficiency and product diversity, synthetic methods of chosen polycyclic carbocycles and heterocycles with at least three fused, bridged, or spiro cages are reviewed. The newly created synthesis concepts or toolkits for accessing diazepine, indol-ones, carbazoles, and benzo-indoles, as well as illustrative privileged synthetic techniques, are included in the featured collection.
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Affiliation(s)
| | - Ghanshyam Mali
- Department
of Chemistry, Indian Institute of Technology
Jodhpur, Jodhpur 342037, India
| | - Garima Dua
- Department
of Chemistry, Indian Institute of Technology
Jodhpur, Jodhpur 342037, India
| | - Priya Samant
- Department
of Chemistry, Indian Institute of Technology
Jodhpur, Jodhpur 342037, India
| | - Akhilesh Kumar
- Department
of Chemistry and Nano Science, Ewha Womans
University, Seoul 03760, Korea
| | - Rohan D. Erande
- Department
of Chemistry, Indian Institute of Technology
Jodhpur, Jodhpur 342037, India
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13
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Chung E, Kim S, Rakshit A, Singh P, Park J, Jeong T, Kim IS. Rh(III)-Catalyzed C8-Spiroannulation of 1-Aminonaphthalenes with Maleimides. J Org Chem 2023; 88:11227-11239. [PMID: 37462908 DOI: 10.1021/acs.joc.3c01258] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/05/2023]
Abstract
The rhodium(III)-catalyzed C8-spiroannulation of 1-aminonaphthalenes with maleimides is described herein. Initially formed C8-alkenylated 1-aminonaphthalenes can intercept nucleophilic 1-amino groups through the intramolecular aza-Michael reaction, resulting in the formation of spirofused tetracyclic frameworks. This protocol displayed a wide substrate scope and a broad functional group compatibility. The synthetic utility of this process is demonstrated by the gram-scale synthesis, late-stage modification, and synthetic transformations.
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Affiliation(s)
- Eunjae Chung
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Suho Kim
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Amitava Rakshit
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Pargat Singh
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Jaewook Park
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Taejoo Jeong
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - In Su Kim
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
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14
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Maiti M, Jana SK, Maji B. Asymmetric alkene-alkene reductive cross-coupling reaction via visible-light photoredox/cobalt dual catalysis. Chem Commun (Camb) 2023. [PMID: 37475618 DOI: 10.1039/d3cc02792a] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/22/2023]
Abstract
The first example of asymmetric alkene-alkene reductive coupling is demonstrated via visible-light-fueled photoredox/cobalt dual catalysis. The desymmetrization reaction provided products (>20 examples) with up to five chiral centers in single-step operation in up to 95% yields with very high relative (>99 : 1 dr) and absolute stereochemistry (up to 98 : 2 er) control. The preliminary mechanistic investigations suggested that the critical mechanistic steps involved light-mediated controlled low-valent cobalt complex generation, oxidative ene-ene cyclization, and protonation.
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Affiliation(s)
- Mamata Maiti
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, 741246, India.
| | - Sayan K Jana
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, 741246, India.
| | - Biplab Maji
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, 741246, India.
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15
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K S, T N MM, Asiri AM, Alamry KA, Asad M. Green synthesis of heterocyclic alkenes using MCM 41 supported perchloric acid catalytic system: characterization and DFT studies. J Mol Model 2023; 29:244. [PMID: 37439878 DOI: 10.1007/s00894-023-05635-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Accepted: 06/26/2023] [Indexed: 07/14/2023]
Abstract
CONTEXT In this work, a series of heterocyclic alkenes were prepared by the reaction of 2-hydroxy-1-naphthaldehyde with various heterocyclic active methylene compounds via Knoevenagel condensation reaction using mesoporous silica, MCM 41, supported perchloric acid as an efficient green catalytic system under solvent-free conditions. A comparative study of the conventional method vs the green method was also reported with the same raw materials. 1H NMR, 13C NMR, IR, and mass spectroscopic techniques were used for the characterization of synthesized compounds. METHODS Computational study was performed for these compounds by applying density functional theory (DFT) at M06 functional and 6-311G (d,p) basis set to interpret the electronic structures and counter check the experimental findings. The frequency analysis with aforementioned levels of DFT was performed to confirm the stability associated with optimized geometries. The true minimum for the optimized geometries for 1, 2, and 3 was achieved as indicated by the absence of negative eigenvalues in all the calculated frequencies. Additionally, natural bond orbitals (NBOs) and nonlinear optical (NLO) properties were explored utilizing the aforementioned level and basis set combination via DFT, whereas the frontier molecular orbitals (FMOs) evaluation was done at time-dependent density functional theory TDDFT at M06/6-311G(d,p). The global reactivity parameters were also calculated using the FMO data. These computation-based outcomes were found in good agreement with the experimental findings.
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Affiliation(s)
- Snigdha K
- Research & Postgraduate Department of Chemistry, MES Kalladi College (Affiliated to University of Calicut), Mannarkkad, Kerala, 678583, India
| | - Mohammed Musthafa T N
- Research & Postgraduate Department of Chemistry, MES Kalladi College (Affiliated to University of Calicut), Mannarkkad, Kerala, 678583, India.
| | - Abdullah M Asiri
- Chemistry Department, Faculty of Science, King Abdulaziz University, 80203, Jeddah, 21589, Saudi Arabia
- Center of Excellence for Advanced Materials Research (CEAMR), King Abdulaziz University, 80203, Jeddah, 21589, Saudi Arabia
| | - Khalid A Alamry
- Center of Excellence for Advanced Materials Research (CEAMR), King Abdulaziz University, 80203, Jeddah, 21589, Saudi Arabia
| | - Mohammad Asad
- Chemistry Department, Faculty of Science, King Abdulaziz University, 80203, Jeddah, 21589, Saudi Arabia.
- Center of Excellence for Advanced Materials Research (CEAMR), King Abdulaziz University, 80203, Jeddah, 21589, Saudi Arabia.
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16
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Pati BV, Puthalath NN, Banjare SK, Nanda T, Ravikumar PC. Transition metal-catalyzed C-H/C-C activation and coupling with 1,3-diyne. Org Biomol Chem 2023; 21:2842-2869. [PMID: 36917476 DOI: 10.1039/d3ob00238a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/05/2023]
Abstract
This review provides a broad overview of the recent developments in the field of transition metal-catalyzed C-H/C-C bond activation and coupling with 1,3-diyne for assembling alkynylated heterocycles, bis-heterocycles, and 1,3-enynes. Transition metal-catalyzed inert bond (C-H/C-C) activation has been the focus of attention among synthetic chemists in recent times. Enormous developments have taken place in C-H/C-C bond activation chemistry in the last two decades. In recent years the use of 2π-unsaturated units as coupling partners for the synthesis of heterocycles through C-H/C-C bond activation and annulation sequence has received immense attention. Among the unsaturated units employed for assembling heterocycles, the use of 1,3-diynes has garnered significant attention due to its ability to render bis-heterocycles in a straightforward manner. The C-H bond activation and coupling with 1,3-diyne has been very much explored in recent years. However, the development of strategies for the use of 1,3-diynes in the analogous C-C bond activation chemistry is less explored. Earlier methods employed to assemble bis-heterocycle used heterocycles that were preformed and pre-functionalized via transition metal-catalyzed coupling reactions. The expensive pre-functionalized halo-heterocycles and sensitive and expensive heterocyclic metal reagents limit its broad application. However, the transition metal-catalyzed C-H activation obviates the need for expensive heterocyclic metal reagents and pre-functionalized halo-heterocycles. The C-H bond activation strategy makes use of C-H bonds as functional groups for effecting the transformation. This renders the overall synthetic sequence both step and cost economic. Hence, this strategy of C-H activation and subsequent reaction with 1,3-diyne could be used for the larger-scale synthesis of chemicals in the pharmaceutical industry. Despite these advances, there is still the possibility of exploration of earth-abundant and cost-effective first-row transition metals (Ni, Cu, Mn. Fe, etc.) for the synthesis of bis-heterocycles. Moreover, the Cp*-ligand-free, simple metal-salt-mediated synthesis of bis-heterocycles is also less explored. Thus, more exploration of reaction conditions for the Cp*-free synthesis of bis-heterocycles is called for. We hope this review will inspire scientists to investigate these unexplored domains.
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Affiliation(s)
- Bedadyuti Vedvyas Pati
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), Odisha 752050, India. .,Homi Bhabha National Institute, Training School Complex, Anushaktinagar, Mumbai 400094, India
| | - Nitha Nahan Puthalath
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), Odisha 752050, India. .,Homi Bhabha National Institute, Training School Complex, Anushaktinagar, Mumbai 400094, India
| | - Shyam Kumar Banjare
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), Odisha 752050, India. .,Homi Bhabha National Institute, Training School Complex, Anushaktinagar, Mumbai 400094, India
| | - Tanmayee Nanda
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), Odisha 752050, India. .,Homi Bhabha National Institute, Training School Complex, Anushaktinagar, Mumbai 400094, India
| | - Ponneri C Ravikumar
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), Odisha 752050, India. .,Homi Bhabha National Institute, Training School Complex, Anushaktinagar, Mumbai 400094, India
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17
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Cobalt(III)-catalyzed asymmetric ring-opening of 7-oxabenzonorbornadienes via indole C-H functionalization. Nat Commun 2023; 14:1094. [PMID: 36841798 PMCID: PMC9968317 DOI: 10.1038/s41467-023-36723-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Accepted: 02/13/2023] [Indexed: 02/26/2023] Open
Abstract
Asymmetric ring-opening of 7-oxabenzonorbornadienes is achieved via Co-catalyzed indole C-H functionalization. The utilization of chiral Co-catalyst consisting of a binaphthyl-derived trisubstituted cyclopentadienyl ligand resulted in high yields (up to 99%) and excellent enantioselectivity (>99% ee) for the target products with tolerance for diverse functional groups. Opposite diastereoselectivities are obtained with chiral Co-catalyst or Cp*CoI2CO. Combined experimental and computational studies suggest β-oxygen elimination being the selectivity-determining step of the reaction. Meanwhile, the reactions of 7-azabenzonorbornadiene could also be executed in a diastereodivergent manner.
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18
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Suwasia S, Venkataramani S, Babu SA. Pd(II)-catalyzed coupling of C-H bonds of carboxamides with iodoazobenzenes toward modified azobenzenes. Org Biomol Chem 2023; 21:1793-1813. [PMID: 36744837 DOI: 10.1039/d2ob02322a] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
In this paper, we report a synthetic protocol for the construction of biaryl motif-based or π-extended azobenzene and alkylated azobenzene derivatives via the Pd(II)-catalyzed bidentate directing group (DG)-aided C-H activation and functionalization strategy. In the past, the synthesis of biaryl motif-based azobenzenes was accomplished through the traditional cross-coupling reaction involving organometallic reagents and aryl halides or equivalent coupling partners. We have shown the direct coupling of C-H bonds of aromatic/aliphatic carboxamides (possessing a DG) with iodoazobenzenes as the coupling partners through the Pd(II)-catalyzed bidentate DG-aided, site-selective C-H functionalization method. Azobenzene-containing compounds are a versatile class of photo-responsive molecules that have found applications across branches of chemical, biological and materials sciences and are prevalent in medicinally relevant molecules. Accordingly, the synthesis of new and functionalized azobenzene-based scaffolds has been an attractive topic of research. Although the classical methods are efficient, they need pre-functionalized starting materials. This protocol involving the Pd(II)-catalyzed, directing group-aided site-selective C-H arylation of aromatic and aliphatic carboxamides using iodoazobenzene as the coupling partner affording azobenzene-based carboxamides is an additional route and also a contribution towards enriching the library of modified azobenzenes. We have also shown the photoswitching properties of representative compounds synthesized via the Pd(II)-catalyzed directing group-aided site-selective C-H functionalization method.
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Affiliation(s)
- Sonam Suwasia
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Knowledge City, Sector 81, SAS Nagar, Mohali, Manauli P.O., Punjab, 140306, India.
| | - Sugumar Venkataramani
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Knowledge City, Sector 81, SAS Nagar, Mohali, Manauli P.O., Punjab, 140306, India.
| | - Srinivasarao Arulananda Babu
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Knowledge City, Sector 81, SAS Nagar, Mohali, Manauli P.O., Punjab, 140306, India.
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19
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Padmavathi R, Babu SA. Pd(II)-catalyzed selective β-C-H functionalization of azobenzene carboxamides. Org Biomol Chem 2023; 21:2689-2694. [PMID: 36691730 DOI: 10.1039/d2ob02261c] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
We report a Pd(II)-catalyzed bidentate directing group 8-aminoquinoline-aided, site-selective β-C-H functionalization protocol for assembling modified azobenzene carboxamides. Considering the importance of azobenzenes in chemical sciences, this paper reports a new route for enriching the library of modified azobenzene motifs.
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Affiliation(s)
- Rayavarapu Padmavathi
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Knowledge City, Sector 81, SAS Nagar, Mohali, Manauli P.O., Punjab, 140306, India.
| | - Srinivasarao Arulananda Babu
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Knowledge City, Sector 81, SAS Nagar, Mohali, Manauli P.O., Punjab, 140306, India.
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20
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Wang Y, Xu P, Xie W, Wang S, Chen Y, Yu N, Zhang S. Exploration of active sites of ethyl alcohol electro-oxidation on porous gold nanoparticles with enhanced Raman spectroscopy. RSC Adv 2023; 13:1333-1338. [PMID: 36686900 PMCID: PMC9811239 DOI: 10.1039/d2ra03863c] [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: 06/23/2022] [Accepted: 12/05/2022] [Indexed: 01/05/2023] Open
Abstract
Novel porous gold nanospheres are prepared by calcination of the gold-urea complexes. The enhanced Raman spectra of ethanol catalyzed by different doses of porous gold nanospheres are measured with a 532 nm laser as the excitation source, and an enhanced charge coupled device served in spectral detection and microscopic imaging. The electrochemical experiments show that the catalytic oxidation products of ethanol with porous gold nanoparticles are acetaldehyde, acetic acid, and water, which further proved that the porous gold nanoparticles can activate the -CH2 of ethanol.
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Affiliation(s)
- Yusong Wang
- AnHui Provincial Engineering Research Center for Polysaccharide Drugs and Institute of Synthesis and Application of Medical Materials, Department of Pharmacy, Wannan Medical CollegeWuhu 241002P.R. China
| | - Peng Xu
- Anhui Normal UniversityWuhu 241002P. R. China
| | - Wenjie Xie
- AnHui Provincial Engineering Research Center for Polysaccharide Drugs and Institute of Synthesis and Application of Medical Materials, Department of Pharmacy, Wannan Medical CollegeWuhu 241002P.R. China
| | - Shaozhen Wang
- AnHui Provincial Engineering Research Center for Polysaccharide Drugs and Institute of Synthesis and Application of Medical Materials, Department of Pharmacy, Wannan Medical CollegeWuhu 241002P.R. China
| | - Yunyan Chen
- AnHui Provincial Engineering Research Center for Polysaccharide Drugs and Institute of Synthesis and Application of Medical Materials, Department of Pharmacy, Wannan Medical CollegeWuhu 241002P.R. China
| | - Nan Yu
- Anhui Normal UniversityWuhu 241002P. R. China
| | - Shengpeng Zhang
- AnHui Provincial Engineering Research Center for Polysaccharide Drugs and Institute of Synthesis and Application of Medical Materials, Department of Pharmacy, Wannan Medical CollegeWuhu 241002P.R. China
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21
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Lu MZ, Goh J, Maraswami M, Jia Z, Tian JS, Loh TP. Recent Advances in Alkenyl sp 2 C-H and C-F Bond Functionalizations: Scope, Mechanism, and Applications. Chem Rev 2022; 122:17479-17646. [PMID: 36240299 DOI: 10.1021/acs.chemrev.2c00032] [Citation(s) in RCA: 44] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Alkenes and their derivatives are featured widely in a variety of natural products, pharmaceuticals, and advanced materials. Significant efforts have been made toward the development of new and practical methods to access this important class of compounds by selectively activating the alkenyl C(sp2)-H bonds in recent years. In this comprehensive review, we describe the state-of-the-art strategies for the direct functionalization of alkenyl sp2 C-H and C-F bonds until June 2022. Moreover, metal-free, photoredox, and electrochemical strategies are also covered. For clarity, this review has been divided into two parts; the first part focuses on currently available alkenyl sp2 C-H functionalization methods using different alkene derivatives as the starting materials, and the second part describes the alkenyl sp2 C-F bond functionalization using easily accessible gem-difluoroalkenes as the starting material. This review includes the scope, limitations, mechanistic studies, stereoselective control (using directing groups as well as metal-migration strategies), and their applications to complex molecule synthesis where appropriate. Overall, this comprehensive review aims to document the considerable advancements, current status, and emerging work by critically summarizing the contributions of researchers working in this fascinating area and is expected to stimulate novel, innovative, and broadly applicable strategies for alkenyl sp2 C-H and C-F bond functionalizations in the coming years.
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Affiliation(s)
- Ming-Zhu Lu
- College of Advanced Interdisciplinary Science and Technology, Henan University of Technology, Zhengzhou 450001, China.,School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, Singapore 637371, Singapore
| | - Jeffrey Goh
- School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, Singapore 637371, Singapore
| | - Manikantha Maraswami
- School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, Singapore 637371, Singapore
| | - Zhenhua Jia
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Jie-Sheng Tian
- School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an 710072, China
| | - Teck-Peng Loh
- College of Advanced Interdisciplinary Science and Technology, Henan University of Technology, Zhengzhou 450001, China.,School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, Singapore 637371, Singapore.,Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China
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22
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Maikhuri VK, Maity J, Srivastava S, Prasad AK. Transition metal-catalyzed double C vinyl-H bond activation: synthesis of conjugated dienes. Org Biomol Chem 2022; 20:9522-9588. [PMID: 36412483 DOI: 10.1039/d2ob01646j] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Conjugated dienes have occupied a pivotal position in the field of synthetic organic chemistry and medicinal chemistry. They act as important synthons for the synthesis of various biologically important molecules and therefore, gain tremendous attention worldwide. A wide range of synthetic routes to access these versatile molecules have been developed in the past decades. Transition metal-catalyzed cross-dehydrogenative coupling (CDC) has emerged as one of the utmost front-line research areas in current synthetic organic chemistry due to its high atom economy, efficiency, and viability. In this review, an up-to-date summary including scope, limitations, mechanistic studies, stereoselectivities, and synthetic applications of transition metal-catalyzed double Cvinyl-H bond activation for the synthesis of conjugated dienes has been reported since 2013. The literature reports mentioned in this review have been classified into three different categories, i.e. (a) Cvinyl-Cvinyl bond formation via oxidative homo-coupling of terminal alkenes; (b) Cvinyl-Cvinyl bond formation via non-directed oxidative cross-coupling of linear/cyclic alkenes and terminal/internal alkenes, and (c) Cvinyl-Cvinyl bond formation via oxidative cross-coupling of directing group bearing alkenes and terminal/internal alkenes. Overall, this review aims to provide a concise overview of the current status of the considerable development in this field and is expected to stimulate further innovation and research in the future.
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Affiliation(s)
- Vipin K Maikhuri
- Bioorganic Laboratory, Department of Chemistry, University of Delhi, Delhi-110007, India.
| | - Jyotirmoy Maity
- Department of Chemistry, St. Stephen's College, University of Delhi, Delhi-110007, India
| | - Smriti Srivastava
- Department of Chemistry, Acadia University, Wolfville, NS, B4P 2R6, Canada
| | - Ashok K Prasad
- Bioorganic Laboratory, Department of Chemistry, University of Delhi, Delhi-110007, India.
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23
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Liu SL, Ye C, Wang X. Recent advances in transition-metal-catalyzed directed C-H alkenylation with maleimides. Org Biomol Chem 2022; 20:4837-4845. [PMID: 35635524 DOI: 10.1039/d2ob00604a] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Transition-metal-catalyzed directed C-H alkenylation with maleimides has attracted much attention in recent years, as maleimide core moieties are present in various natural products and pharmaceuticals. In addition, these derivatives can be readily modified into biologically important compounds including succinimides, pyrrolidines and γ-lactams. The efficient chelation-assisted inert C-H bond activation strategy provides straightforward access to a wide array of structurally diverse molecules containing maleimide units. This review describes the major progress and mechanistic investigations on Heck-type reaction/cyclization of maleimides with organic molecules until early 2022.
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Affiliation(s)
- Shuang-Liang Liu
- College of Material and Chemical Engineering, Zhengzhou University of Light Industry, Kexue avenue 136, Zhengzhou, 450001, P.R. China.
| | - Changchun Ye
- College of Material and Chemical Engineering, Zhengzhou University of Light Industry, Kexue avenue 136, Zhengzhou, 450001, P.R. China.
| | - Xiaoge Wang
- College of Material and Chemical Engineering, Zhengzhou University of Light Industry, Kexue avenue 136, Zhengzhou, 450001, P.R. China.
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24
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Sarkar T, Shah TA, Maharana PK, Debnath B, Punniyamurthy T. Dual Metallaphotoredox Catalyzed Directed C(sp2)‐H Functionalization: Access to C‐C/C‐Heteroatom Bonds. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200541] [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]
Affiliation(s)
- Tanumay Sarkar
- IIT Guwahati: Indian Institute of Technology Guwahati Chemistry INDIA
| | | | | | - Bijoy Debnath
- Indian Institute of Technology Guwahati Chemistry INDIA
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25
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Meena N, Dhiman S, Rangan K, Kumar A. Cobalt-catalyzed tandem one-pot synthesis of polysubstituted imidazo[1,5- a]pyridines and imidazo[1,5- a]isoquinolines. Org Biomol Chem 2022; 20:4215-4223. [PMID: 35546113 DOI: 10.1039/d2ob00526c] [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
An efficient cobalt-catalyzed tandem one-pot method has been developed for the synthesis of polysubstituted imidazo[1,5-a]-N-heteroaromatics. The method involves Knoevenagel condensation followed by cobalt-catalyzed direct alkenylation to give the desired polysubstituted imidazo[1,5-a]pyridines and imidazo[1,5-a]isoquinolines in a one-pot manner. This method exhibits a broad substrate scope, provides moderate to good (39-74%) yields and is amenable to scale-up to the gram scale.
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Affiliation(s)
- Neha Meena
- Department of Chemistry, Birla Institute of Technology and Science, Pilani, Rajasthan 333031, India.
| | - Shiv Dhiman
- Department of Chemistry, Birla Institute of Technology and Science, Pilani, Rajasthan 333031, India.
| | - Krishnan Rangan
- Department of Chemistry, Birla Institute of Technology and Science Pilani, Hyderabad Campus, Telangana, 500078, India
| | - Anil Kumar
- Department of Chemistry, Birla Institute of Technology and Science, Pilani, Rajasthan 333031, India.
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26
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Saiegh T, Meyer C, Cossy J. Rhodium(III)‐Catalyzed Heteroannulations of 3‐Sulfolene Derivatives via C(sp2)–H Activation. Access to Pyridine ortho‑Quinodimethane Precursors. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200509] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Tomas Saiegh
- ESPCI Paris Molecular, Macromolecular Chemistry, and Materials FRANCE
| | - Christophe Meyer
- ESPCI Paris, CNRS, PSL Research University Laboratory of Organic Chemsitry 10 rue Vauquelin 75005 PARIS FRANCE
| | - Janine Cossy
- ESPCI: ESPCI Paris Molecular, Macromolecular Chemistry, and Materials PARIS FRANCE
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27
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Kang JY, Kim S, Moon J, Chung E, Kim J, Kyung SY, Kim HS, Mishra NK, Kim IS. Synthesis of Succinimide-Linked Indazol-3-ols Derived from Maleimides under Rh(III) Catalysis. ACS OMEGA 2022; 7:14712-14722. [PMID: 35557672 PMCID: PMC9088931 DOI: 10.1021/acsomega.1c07363] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Accepted: 03/21/2022] [Indexed: 05/14/2023]
Abstract
The structural modification of N-aryl indazolols as tautomers of N-aryl indazolones has been established as a hot topic in pharmaceutics and medicinal chemistry. We herein disclose the rhodium(III)-catalyzed 1,4-addition reaction of maleimides with N-aryl indazol-3-ols, which provides the succinimide-bearing indazol-3-ol scaffolds with complete regioselectivity and a good functional group tolerance. Notably, the versatility of this protocol is demonstrated by the use of drug-molecule-linked and fluorescence-probe-linked maleimides.
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28
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Hu L, Liu Y, Fang X, zheng Y, Liao RZ, Li M, Xie Y. An Intermolecular Hydroarylation of Highly Deactivated Styrenes Catalyzed by Re 2O 7/HReO 4 in Hexafluoroisopropanol. ACS Catal 2022. [DOI: 10.1021/acscatal.2c01223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Liqun Hu
- Hubei Key Laboratory of Bioinorganic Chemistry and Materia Medica; Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education; Hubei Key Laboratory of Materials Chemistry and Service Failure; School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan 430074, China
| | - Yibing Liu
- Hubei Key Laboratory of Bioinorganic Chemistry and Materia Medica; Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education; Hubei Key Laboratory of Materials Chemistry and Service Failure; School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan 430074, China
| | - Xiong Fang
- Hubei Key Laboratory of Bioinorganic Chemistry and Materia Medica; Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education; Hubei Key Laboratory of Materials Chemistry and Service Failure; School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan 430074, China
| | - Yuzhu zheng
- Hubei Key Laboratory of Bioinorganic Chemistry and Materia Medica; Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education; Hubei Key Laboratory of Materials Chemistry and Service Failure; School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan 430074, China
| | - Rong-zhen Liao
- Hubei Key Laboratory of Bioinorganic Chemistry and Materia Medica; Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education; Hubei Key Laboratory of Materials Chemistry and Service Failure; School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan 430074, China
| | - Man Li
- Hubei Key Laboratory of Bioinorganic Chemistry and Materia Medica; Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education; Hubei Key Laboratory of Materials Chemistry and Service Failure; School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan 430074, China
| | - Youwei Xie
- Hubei Key Laboratory of Bioinorganic Chemistry and Materia Medica; Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education; Hubei Key Laboratory of Materials Chemistry and Service Failure; School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan 430074, China
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29
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Khake SM, Chatani N. Rhodium(III)-Catalyzed Oxidative C–H Alkylation of Aniline Derivatives with Allylic Alcohols To Produce β-Aryl Ketones. ACS Catal 2022. [DOI: 10.1021/acscatal.2c00854] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Shrikant M. Khake
- Department of Applied Chemistry, Faculty of Engineering, Suita, Osaka 565-0871, Japan
| | - Naoto Chatani
- Department of Applied Chemistry, Faculty of Engineering, Suita, Osaka 565-0871, Japan
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30
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Borah G, Dam B, Patel BK. Ortho
‐Functionalization of Benzimidates and Benzamidines. ChemistrySelect 2022. [DOI: 10.1002/slct.202104583] [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]
Affiliation(s)
- Gongutri Borah
- Department of Chemistry Indian Institute of Technology Guwahati, North Guwahati Guwahati 781039 Assam India
| | - Binoyargha Dam
- Department of Chemistry Indian Institute of Technology Guwahati, North Guwahati Guwahati 781039 Assam India
| | - Bhisma K. Patel
- Department of Chemistry Indian Institute of Technology Guwahati, North Guwahati Guwahati 781039 Assam India
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31
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Enantioselective synthesis of indenopyrazolopyrazolones enabled by dual directing groups-assisted and rhodium(III)-catalyzed tandem C-H alkenylation/[3 + 2] stepwise cycloaddition. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2021.08.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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32
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Dey A, Singh A, Volla CMR. Cobalt-catalyzed highly diastereoselective [3 + 2] carboannulation reactions: facile access to substituted indane derivatives. Chem Commun (Camb) 2022; 58:1386-1389. [PMID: 34989718 DOI: 10.1039/d1cc05245d] [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
Efficient oxidative [3 + 2] annulation reaction involving aryl hydrazones and heterobicyclic alkenes has been realized with inexpensive and earth-abundant cobalt salts under aerobic conditions. The reaction proceeds via directing-group-assisted C-H activation and exo-selective migratory insertion, followed by the intramolecular nucleophilic attack of the alkylcobalt(III) species onto the imine with high anti-diastereoselectivity to provide complex indane derivatives. The generation of three contiguous stereogenic centers within the indanyl unit and the avoidance of the use of stoichiometric amounts of metal oxidants make this transformation more valuable and appealing.
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Affiliation(s)
- Arnab Dey
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai-400076, India.
| | - Anurag Singh
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai-400076, India.
| | - Chandra M R Volla
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai-400076, India.
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33
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Liu H, Shi H, Han P, Meng Z, Liu T, Han LL. The annulation of N-hydroxyoximes and 1,3-diyne to synthesize alkynylated isoquinolines regioselectively catalyzed by ruthenium: a theoretical study. Org Biomol Chem 2022; 20:7294-7301. [DOI: 10.1039/d2ob01215d] [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 mechanisms of the regioselective annulation of N-hydroxyoximes and 1,3-diyne to synthesize alkynylated isoquinolines by using catalyst [RuCl2(p-cymene)]2 have been theoretically investigated with the aid of density functional theory (DFT)...
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34
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Belyaev E, Kozhemyakin GL, Tyurin V, Frolova VV, Lonin IS, Ponomarev G, Buryak A, Zamilatskov I. Direct C-H borylation of vinylporphyrins via copper catalysis. Org Biomol Chem 2022; 20:1926-1932. [DOI: 10.1039/d1ob02005f] [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 method of direct borylation of vinyl-substituted porphyrinoids (porphyrins and chlorins) has been developed based on the copper catalyzed vinylic C-H activation. Ni(II) complexes of meso- and β-vinylporphyrinoids have been...
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35
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Xie W, Chen X, Li Y, Lin J, Chen W, Shi J. Electrooxidative Annulation of Unsaturated Molecules via Directed C—H Activation. CHINESE J ORG CHEM 2022. [DOI: 10.6023/cjoc202110028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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36
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Belen’kii LI, Gazieva GA, Evdokimenkova YB, Soboleva NO. The literature of heterocyclic chemistry, Part XX, 2020. ADVANCES IN HETEROCYCLIC CHEMISTRY 2022. [DOI: 10.1016/bs.aihch.2022.10.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
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37
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Gong X, Shen Z, Wang G, Qu L, Zhu C. Heterogeneous copper-catalyzed synthesis of diaryl sulfones. Org Biomol Chem 2021; 19:10662-10668. [PMID: 34850802 DOI: 10.1039/d1ob01830b] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
A carbon-supported copper nanoparticle (Cu-NP) with high catalytic activity for the synthesis of diaryl sulfones is reported. For the first time, this Cu-NP is proved to be able to effectively promote the reaction of arylboronic acids and arylsulfonyl hydrazides to generate diaryl sulfones at room temperature. The reaction shows excellent substrate universality, and substrates with different substituents can undergo the reaction smoothly, leading to the desired products in good yields. The Cu-NP is found to be made of low valence Cu based on XRD. Hence, the reaction catalyzed by the Cu-NP is believed to involve a Cu-mediated organometallic cycle.
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Affiliation(s)
- Xinchi Gong
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China.
| | - Zhengqi Shen
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China.
| | - Ganghu Wang
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China.
| | - Lingling Qu
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China.
| | - Chunyin Zhu
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China.
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38
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Liu S, Shi Y, Xue C, Zhang L, Zhou L, Song M. Maleimides in Directing‐Group‐Controlled Transition‐Metal‐Catalyzed Selective C−H Alkylation. European J Org Chem 2021. [DOI: 10.1002/ejoc.202101262] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Shuang‐Liang Liu
- College of Material and Chemical Engineering and Key Laboratory of Surface and Interface Science and Technology of Henan Province Zhengzhou University of Light Industry Kexue avenue 100 Zhengzhou 450001 P.R. China
| | - Yajun Shi
- College of Material and Chemical Engineering and Key Laboratory of Surface and Interface Science and Technology of Henan Province Zhengzhou University of Light Industry Kexue avenue 100 Zhengzhou 450001 P.R. China
| | - Cong Xue
- College of Material and Chemical Engineering and Key Laboratory of Surface and Interface Science and Technology of Henan Province Zhengzhou University of Light Industry Kexue avenue 100 Zhengzhou 450001 P.R. China
| | - Liming Zhang
- College of Material and Chemical Engineering and Key Laboratory of Surface and Interface Science and Technology of Henan Province Zhengzhou University of Light Industry Kexue avenue 100 Zhengzhou 450001 P.R. China
| | - Liming Zhou
- College of Material and Chemical Engineering and Key Laboratory of Surface and Interface Science and Technology of Henan Province Zhengzhou University of Light Industry Kexue avenue 100 Zhengzhou 450001 P.R. China
| | - Mao‐Ping Song
- College of Chemistry, and Green Catalysis Center Zhengzhou University Kexue avenue 136 Zhengzhou 450001 P.R. China
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39
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Kang JY, An W, Kim S, Kwon NY, Jeong T, Ghosh P, Kim HS, Mishra NK, Kim IS. Synthesis of spirosuccinimides via annulative cyclization between N-aryl indazolols and maleimides under rhodium(III) catalysis. Chem Commun (Camb) 2021; 57:10947-10950. [PMID: 34604876 DOI: 10.1039/d1cc04599g] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
The rhodium(III)-catalyzed spiroannulation reaction between N-aryl indazol-3-ols and maleimides is described herein. The developed method is showcased by the construction of spirosuccinimides using bioactive molecule-linked and chemical probe-linked maleimides. Combined mechanistic investigations including the determination of an isolable rhodacycle complex aided the elucidation of a plausible reaction mechanism.
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Affiliation(s)
- Ju Young Kang
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea.
| | - Won An
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea.
| | - Suho Kim
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea.
| | - Na Yeon Kwon
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea.
| | - Taejoo Jeong
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea.
| | - Prithwish Ghosh
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea.
| | - Hyung Sik Kim
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea.
| | - Neeraj Kumar Mishra
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea.
| | - In Su Kim
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea.
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40
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Wang Y, Jia D, Zeng J, Liu Y, Bu X, Yang X. Benzocarbazole Synthesis via Visible-Light-Accelerated Rh(III)-Catalyzed C-H Annulation of Aromatic Amines with Bicyclic Alkenes. Org Lett 2021; 23:7740-7745. [PMID: 34597511 DOI: 10.1021/acs.orglett.1c02709] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
A visible-light-accelerated Rh(III)-catalyzed C-H annulation of aromatic amines with bicyclic alkenes for the synthesis of benzocarbazole derivatives was developed. In this approach, with the cooperation of rhodium catalysis and visible-light irradiation, various aromatic amines reacted with oxabicyclic alkenes and azabicyclic alkenes smoothly at room temperature, delivering the corresponding bridged oxa or aza tetrahydro benzocarbazoles in good to excellent yields. Moreover, a series of benzo[b]carbazoles were synthesized conveniently through further aromatization in one pot. The potential of this method was demonstrated via directing-group removal, derivatization, a scale-up reaction, and fluorescence investigations.
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Affiliation(s)
- Yichun Wang
- Institute of Catalysis for Energy and Environment, College of Chemistry and Chemical Engineering, Shenyang Normal University, Shenyang 110034, People's Republic of China
| | - Deyang Jia
- Institute of Catalysis for Energy and Environment, College of Chemistry and Chemical Engineering, Shenyang Normal University, Shenyang 110034, People's Republic of China
| | - Jing Zeng
- Institute of Catalysis for Energy and Environment, College of Chemistry and Chemical Engineering, Shenyang Normal University, Shenyang 110034, People's Republic of China
| | - Yuming Liu
- Sichuan Environmental Protection Engineering Co., Ltd., Chengdu 621000, People's Republic of China
| | - Xiubin Bu
- Institute of Catalysis for Energy and Environment, College of Chemistry and Chemical Engineering, Shenyang Normal University, Shenyang 110034, People's Republic of China
| | - Xiaobo Yang
- Institute of Catalysis for Energy and Environment, College of Chemistry and Chemical Engineering, Shenyang Normal University, Shenyang 110034, People's Republic of China.,Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing 100084, People's Republic of China
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41
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Desai B, Patel M, Dholakiya BZ, Rana S, Naveen T. Recent advances in directed sp 2 C-H functionalization towards the synthesis of N-heterocycles and O-heterocycles. Chem Commun (Camb) 2021; 57:8699-8725. [PMID: 34397068 DOI: 10.1039/d1cc02176a] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Heterocyclic compounds are widely present in the core structures of several natural products, pharmaceuticals and agrochemicals, and thus great efforts have been devoted to their synthesis in a mild and simpler way. In the past decade, remarkable progress has been made in the field of heterocycle synthesis by employing C-H functionalization as an emerging synthetic strategy. As a complement to previous protocols, transition metal catalyzed C-H functionalization of arenes using various directing groups has recently emerged as a powerful tool to create different classes of heterocycles. This review is mainly focussed on the recent key progress made in the field of the synthesis of N,O-heterocycles from olefins and allenes by using nitrogen based and oxidizing directing groups.
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Affiliation(s)
- Bhargav Desai
- Department of Chemistry, Sardar Vallabhbhai National Institute of Technology, Surat, Gujarat-395 007, India.
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42
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Liu X, Chen J, Yang C, Wu Z, Li Z, Shi Y, Huang T, Yang Z, Wu Y. Three-Component Couplings among Heteroarenes, Difluorocyclopropenes, and Water via C-H Activation. Org Lett 2021; 23:6831-6835. [PMID: 34399575 DOI: 10.1021/acs.orglett.1c02392] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Three-component couplings have been realized for efficiently constructing various nitrogen-containing skeletons via C-H activation, where difluorocyclopropenes have been first identified as coupling partners. Many substrates including sp2 and sp3 C-H substrates were well tolerated, furnishing the corresponding products in good yields. Furthermore, a catalyst-dependent reaction was also developed, enabling divergent construction of two different frameworks. The application value of these reactions was demonstrated in gram-scale experiments with as little as 1 mol % catalyst.
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Affiliation(s)
- Xuexin Liu
- West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Jian Chen
- West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Chunyan Yang
- West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Zhouping Wu
- West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Zhiyang Li
- West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Yuesen Shi
- West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Tianle Huang
- West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Zhongzhen Yang
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry of Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Yong Wu
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry of Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
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43
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Mantry L, Maayuri R, Kumar V, Gandeepan P. Photoredox catalysis in nickel-catalyzed C-H functionalization. Beilstein J Org Chem 2021; 17:2209-2259. [PMID: 34621388 PMCID: PMC8451005 DOI: 10.3762/bjoc.17.143] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Accepted: 08/18/2021] [Indexed: 01/24/2023] Open
Abstract
Catalytic C‒H functionalization has become a powerful strategy in organic synthesis due to the improved atom-, step- and resource economy in comparison with cross-coupling or classical organic functional group transformations. Despite the significant advances in the metal-catalyzed C‒H activations, recent developments in the field of metallaphotoredox catalysis enabled C‒H functionalizations with unique reaction pathways under mild reaction conditions. Given the relative earth-abundance and cost-effective nature, nickel catalysts for photoredox C‒H functionalization have received significant attention. In this review, we highlight the developments in the field of photoredox nickel-catalyzed C‒H functionalization reactions with a range of applications until summer 2021.
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Affiliation(s)
- Lusina Mantry
- Department of Chemistry, Indian Institute of Technology Tirupati, Tirupati – Renigunta Road, Settipalli Post, Tirupati, Andhra Pradesh 517506, India
| | - Rajaram Maayuri
- Department of Chemistry, Indian Institute of Technology Tirupati, Tirupati – Renigunta Road, Settipalli Post, Tirupati, Andhra Pradesh 517506, India
| | - Vikash Kumar
- Department of Chemistry, Indian Institute of Technology Tirupati, Tirupati – Renigunta Road, Settipalli Post, Tirupati, Andhra Pradesh 517506, India
| | - Parthasarathy Gandeepan
- Department of Chemistry, Indian Institute of Technology Tirupati, Tirupati – Renigunta Road, Settipalli Post, Tirupati, Andhra Pradesh 517506, India
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44
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Karishma P, Mandal SK, Sakhuja R. Rhodium‐Catalyzed Spirocyclization of Maleimide with
N
‐Aryl‐2,3‐dihydrophthalazine‐1,4‐dione to Access Pentacyclic Spiro‐Succinimides. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100384] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Pidiyara Karishma
- Department of Chemistry Birla Institute of Technology and Science Pilani Rajasthan 333031 India
| | - Sanjay K. Mandal
- Department of Chemical Sciences Indian Institute of Science Education and Research Mohali Sector 81, SAS Nagar, Manuali P.O. Mohali Punjab 140306 India
| | - Rajeev Sakhuja
- Department of Chemistry Birla Institute of Technology and Science Pilani Rajasthan 333031 India
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45
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Dethe DH, Beeralingappa NC, Kumar V. Weakly Coordinating, Hydroxyl Directed Ruthenium Catalyzed C-H Alkylation of Ubiquitous Benzyl Alcohols with Maleimides. Org Lett 2021; 23:6267-6271. [PMID: 34355912 DOI: 10.1021/acs.orglett.1c02040] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Benzyl alcohols have been employed as effective coupling partners in Ru-catalyzed C-H functionalization reactions, and their annulation with maleimides then offers efficient synthesis of useful ortho substituted succinimide aromatic aldehydes and ketones. Detailed mechanistic studies have been demonstrated by performing preliminary reactions, deuterium studies, and competitive experiments.
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Affiliation(s)
- Dattatraya H Dethe
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, India
| | | | - Vimlesh Kumar
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, India
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46
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Liu T, Han L, Zhang J, Lu G. Multiple Reaction Pathways of Eight-Membered Rhodacycles in Rh-Catalyzed Annulations of 2-Alkenyl Phenols/Anilides with Alkynes. J Org Chem 2021; 86:10484-10491. [PMID: 34313437 DOI: 10.1021/acs.joc.1c01143] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Density functional theory calculations were performed to study the competing pathways of rhodacycle intermediates generated in Rh(III)-catalyzed annulations of 2-alkenyl phenols and 2-alkenyl anilides with alkynes. The results show that the multiple pathways of eight-membered rhodacycles can be subtly tuned to give specific cyclic products. The seven-membered oxacyclic and spirocyclic products from 2-alkenyl phenols are formed by favoring the pathway of dissociating the Rh-O bond of O-contained rhodacycles, which are followed by antarafacial nucleophilic attack. The indoline product from 2-alkenyl anilides is generated through the pathway of intramolecular olefin migratory insertion of the N-contained rhodacycle.
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Affiliation(s)
- Tao Liu
- School of Chemistry, Chemical Engineering and Materials, Jining University, Qufu, Shandong 273155, China
| | - Lingli Han
- School of Chemistry, Chemical Engineering and Materials, Jining University, Qufu, Shandong 273155, China
| | - Jing Zhang
- School of Chemistry, Chemical Engineering and Materials, Jining University, Qufu, Shandong 273155, China
| | - Gang Lu
- School of Chemistry and Chemical Engineering, Key Laboratory of Colloid and Interface Chemistry, Ministry of Education, Shandong University, Jinan, Shandong 250100, China
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47
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Sunny S, Karvembu R. Recent Advances in Cobalt‐Catalyzed, Directing‐Group‐Assisted C−H Bond Amidation Reactions. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100558] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Sereena Sunny
- Department of Chemistry National Institute of Technology Tiruchirappalli 620015 India
| | - Ramasamy Karvembu
- Department of Chemistry National Institute of Technology Tiruchirappalli 620015 India
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48
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Ghosh P, Chowdhury D, Dana S, Baidya M. Transition Metal Catalyzed Free-Amine (-NH 2 ) Directed C-H Bond Activation and Functionalization for Biaryl Frameworks. CHEM REC 2021; 21:3795-3817. [PMID: 34235831 DOI: 10.1002/tcr.202100158] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2021] [Revised: 06/19/2021] [Accepted: 06/21/2021] [Indexed: 12/29/2022]
Abstract
Transition-metal-catalyzed direct transformation of inert C-H bond has revolutionized the arsenal of main-stream organic synthesis, providing a new upfront to forge structurally enriched and biologically relevant scaffolds in a step- and atom-economical way. Past decades have accounted for the major developments in this realm, proclaiming excellent site-selectivity by exploiting a variety of coordinating directing groups (DGs). Consideration of versatile, abundant, sp3 -hybridized free-amine (-NH2 ) functionality for the same purpose has always been a formidable task owing to its innate reactivity. In recent years, free-amine functionality has emerged as a potent DG for a wide range of C-C and C-heteroatom bonds formations and annulation cascades. In this review article, we have discussed the advancements of free-amine directed C-H activation/functionalization reactions towards biaryl frameworks made within a decade (2012 to 2021).
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Affiliation(s)
- Prasanjit Ghosh
- Department of Chemistry, Indian Institute of Technology Madras, Chennai, 600036, Tamil Nadu, India
| | - Deepan Chowdhury
- Department of Chemistry, Indian Institute of Technology Madras, Chennai, 600036, Tamil Nadu, India
| | - Suman Dana
- Department of Chemistry, Indian Institute of Technology Madras, Chennai, 600036, Tamil Nadu, India
| | - Mahiuddin Baidya
- Department of Chemistry, Indian Institute of Technology Madras, Chennai, 600036, Tamil Nadu, India
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49
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Thakur R, Jaiswal Y, Kumar A. Primary amides: Sustainable weakly coordinating groups in transition metal-catalyzed C–H bond functionalization reactions. Tetrahedron 2021. [DOI: 10.1016/j.tet.2021.132313] [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]
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50
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Nipate DS, Shinde VN, Rangan K, Kumar A. Switchable regioselective hydroalkylation of 2-arylindoles with maleimides. Org Biomol Chem 2021; 19:4910-4921. [PMID: 34008673 DOI: 10.1039/d1ob00690h] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A condition-based switchable regioselective hydroalkylation of 2-arylindoles with maleimides has been developed. The reaction in the presence of a Ru(ii)-catalyst resulted in hydroalkylation at the ortho-position of the C2-aryl ring via C-H activation whereas the reaction in the absence of the catalyst in TFE resulted in C3-hydroalkylation. Various functional groups both on the indole ring and on the 2-phenyl ring were tolerated and a wide range of hydroalkylated products were obtained in moderate to high (37-88%) yields.
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Affiliation(s)
- Dhananjay S Nipate
- Department of Chemistry, Birla Institute of Technology and Science Pilani, Pilani Campus, Rajasthan 333031, India.
| | - Vikki N Shinde
- Department of Chemistry, Birla Institute of Technology and Science Pilani, Pilani Campus, Rajasthan 333031, India.
| | - Krishnan Rangan
- Department of Chemistry, Birla Institute of Technology and Science Pilani, Hyderabad Campus, Telangana 500078, India
| | - Anil Kumar
- Department of Chemistry, Birla Institute of Technology and Science Pilani, Pilani Campus, Rajasthan 333031, India.
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