1
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Jachak GR, Kashinath K, Vasudevan N, Athawale PR, Choudhury R, Dange SS, Agarwal H, Barthwal MK, Reddy DS. Comprehensive Study on Solomonamides: Total Synthesis, Stereochemical Revision, and SAR Studies toward Identification of Simplified Lead. J Org Chem 2023; 88:17088-17133. [PMID: 38051995 DOI: 10.1021/acs.joc.3c01987] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2023]
Abstract
Solomonamides, a pair of macrocyclic peptide natural products originating from marine sources, have garnered significant attention within the synthetic community owing to their marked anti-inflammatory efficacy and intricate molecular architectures. In this paper, we present a very detailed investigation into solomonamides, including the challenges associated with the total synthesis, the evolution of our synthetic strategies, structural reassignment, synthesis of all possible stereoisomeric macrocycles, biological assessment, structure-activity relationship (SAR) studies, etc. Within the ambit of this total synthesis, diverse strategies for macrocyclization were rigorously explored, encompassing the Friedel-Crafts acylation, cyclization involving the aniline NH2 moiety, macrolactamization utilizing Gly-NH2, and Heck macrocyclization methodologies. In addition, an array of intriguing chemical transformations were devised, including but not limited to photo-Fries rearrangement, Wacker oxidation, ligand-free Heck macrocyclization, oxidative cleavage of indole, synthesis of contiguous stereocenters via substrate/reagent-controlled protocols, and simultaneous making and breaking of olefinic moieties. The findings of this investigation revealed a structurally simplified lead compound. Remarkably, the lead compound, while possessing structural simplification in comparison to the intricate solomonamide counterparts, demonstrates equipotent in vivo anti-inflammatory efficacy.
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Affiliation(s)
- Gorakhnath R Jachak
- Division of Organic Chemistry, CSIR-National Chemical Laboratory (CSIR-NCL), Dr. Homi Bhabha Road, Pune 411008, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - K Kashinath
- Division of Organic Chemistry, CSIR-National Chemical Laboratory (CSIR-NCL), Dr. Homi Bhabha Road, Pune 411008, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - N Vasudevan
- Division of Organic Chemistry, CSIR-National Chemical Laboratory (CSIR-NCL), Dr. Homi Bhabha Road, Pune 411008, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Paresh R Athawale
- Division of Organic Chemistry, CSIR-National Chemical Laboratory (CSIR-NCL), Dr. Homi Bhabha Road, Pune 411008, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Rahul Choudhury
- Division of Organic Chemistry, CSIR-National Chemical Laboratory (CSIR-NCL), Dr. Homi Bhabha Road, Pune 411008, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Santoshkumar S Dange
- Division of Organic Chemistry, CSIR-National Chemical Laboratory (CSIR-NCL), Dr. Homi Bhabha Road, Pune 411008, India
| | - Heena Agarwal
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
- Pharmacology Division, CSIR-Central Drug Research Institute (CSIR-CDRI), Lucknow 226031, India
| | - Manoj Kumar Barthwal
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
- Pharmacology Division, CSIR-Central Drug Research Institute (CSIR-CDRI), Lucknow 226031, India
| | - D Srinivasa Reddy
- Division of Organic Chemistry, CSIR-National Chemical Laboratory (CSIR-NCL), Dr. Homi Bhabha Road, Pune 411008, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
- Department of Organic Synthesis & Process Chemistry, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500007, India
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2
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Wang H, Liu Z, Yang Q, Wang Y, Chen Y, Bao Y, Zhu H. Quinazoline-Assisted Acylation with Aldehydes through Pd(II)-Catalyzed C(sp2)–H Activation. Tetrahedron Lett 2022. [DOI: 10.1016/j.tetlet.2022.154320] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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3
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Zhou J, Pang Y, Zhang W, OuYang F, Lin H, Li X, Yan J. Discovery of a Novel Stilbene Derivative as a Microtubule Targeting Agent Capable of Inducing Cell Ferroptosis. J Med Chem 2022; 65:4687-4708. [PMID: 35282680 DOI: 10.1021/acs.jmedchem.1c01775] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Jingwei Zhou
- Department of Quantum Chemistry, Wecomput Technology Company, Ltd. (Guangzhou), Room 807, Guangzhou International Financial Center, Zhujiang West Road, Tianhe District, Guangzhou 100085, P. R. China
| | - Yanqing Pang
- Department of Laboratory Medicine, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine (Guangdong Provincial Hospital of Chinese Medicine), Guangzhou 510120, P. R. China
- Second Clinical Medical College, Guangzhou University of Chinese Medicine, Guangzhou 510120, P. R. China
| | - Weiwei Zhang
- Department of Laboratory Medicine, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine (Guangdong Provincial Hospital of Chinese Medicine), Guangzhou 510120, P. R. China
| | - Fen OuYang
- Department of Laboratory Medicine, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine (Guangdong Provincial Hospital of Chinese Medicine), Guangzhou 510120, P. R. China
| | - Haibiao Lin
- Department of Laboratory Medicine, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine (Guangdong Provincial Hospital of Chinese Medicine), Guangzhou 510120, P. R. China
| | - Xingshu Li
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, P. R. China
| | - Jun Yan
- Department of Laboratory Medicine, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine (Guangdong Provincial Hospital of Chinese Medicine), Guangzhou 510120, P. R. China
- Second Clinical Medical College, Guangzhou University of Chinese Medicine, Guangzhou 510120, P. R. China
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4
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Sharma R, Yadav RK, Jain M, Joshi J, Chaudhary S. Oxidant-Switched Palladium-Catalyzed Regioselective Mono- versus Bis- ortho-Aroylation of 1-Aryl-1 H-indazoles with Aldehydes via C-H Bond Activation. J Org Chem 2022; 87:2668-2685. [PMID: 35119847 DOI: 10.1021/acs.joc.1c02628] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A highly efficient oxidant-switched palladium-catalyzed regioselective C(sp2)-H/C(sp2)-H cross-dehydrogenative coupling (CDC) for direct mono/bis-ortho-aroylation of substituted 1-phenyl-1H-indazoles 1a-j with various substituted aldehydes 3a-t via C(sp2)-H bond activation has been developed. In this study, Pd-catalyzed chelation-assisted mono- or bis-aroylation of substituted 1-phenyl-1H-indazoles depends on the type of oxidant being used for the CDC reaction. While mono-ortho-aroylation of substituted 1-phenyl-1H-indazole was obtained using dicumylperoxide (DCP) as the oxidant, the bis-ortho-aroylation product has been afforded by the use of tert-butyl hydroperoxide (TBHP). Regardless of the greater activity at the C-3 position of 1H-indazoles, the greater coordinating capacity of the N atom directed the aroylating group to the ortho position, leaving behind the nondirected metalation pathway. The Pd-catalyzed operationally simplified methodology proceeded in the presence of oxidants with either DCP or TBHP in dichloroethane as the solvent at 110 °C for 16 h, which generated a miscellaneous variety of monosubstituted o-benzoyl/acyl-1-aryl-1H-indazoles 4a-t/5a-i and bis-substituted o-benzoyl-1-aryl-1H-indazoles 6a-j in ≤88% yields. The probable mechanistic pathway involves a free radical chelation-assisted approach that could be accomplished by the addition of an in situ-generated oxidant-promoted benzoyl/acyl radical to the ortho position of 1-phenyl-1H-indazoles. A wide range of substrates, a high functional group tolerance, gram-scale synthesis, control/competitive experiments, and a variety of synthetic applications further exemplify the versatility of the developed methodology.
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Affiliation(s)
- Richa Sharma
- Laboratory of Organic and Medicinal Chemistry, Department of Chemistry, Malaviya National Institute of Technology, Jawaharlal Nehru Marg, Jaipur 302017, India
| | - Ravi Kant Yadav
- Laboratory of Organic and Medicinal Chemistry, Department of Chemistry, Malaviya National Institute of Technology, Jawaharlal Nehru Marg, Jaipur 302017, India
| | - Mukesh Jain
- Laboratory of Organic and Medicinal Chemistry, Department of Chemistry, Malaviya National Institute of Technology, Jawaharlal Nehru Marg, Jaipur 302017, India
| | - Jyoti Joshi
- Laboratory of Organic and Medicinal Chemistry, Department of Chemistry, Malaviya National Institute of Technology, Jawaharlal Nehru Marg, Jaipur 302017, India
| | - Sandeep Chaudhary
- Laboratory of Organic and Medicinal Chemistry, Department of Chemistry, Malaviya National Institute of Technology, Jawaharlal Nehru Marg, Jaipur 302017, India.,Laboratory of Bioactive Heterocycles and Catalysis, Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research-Raebareli (Transit Campus), Bijnor-Sisendi Road, Near CRPF Base Camp, Sarojini Nagar, Lucknow 226002, India
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5
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Redox-neutral C–H acylation of indole with ketene by manganese catalysis. GREEN SYNTHESIS AND CATALYSIS 2022. [DOI: 10.1016/j.gresc.2022.01.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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6
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Kanyiva KS, Shibata T, Tang KHN, Wang J. Palladium-Catalyzed sp3 C–H Benzoxylation of Alanine Derivatives Using Aldehydes under Ambient Conditions. SYNTHESIS-STUTTGART 2021. [DOI: 10.1055/a-1422-9632] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
AbstractThe Pd(II)-catalyzed sp3 C–H bond benzoxylation of N-phthaloylalanine derivatives possessing an 8-aminoquinolyl group as a directing group with aldehydes under ambient conditions is reported. When a solution of an alanine derivative and an aldehyde in a toluene/water co-solvent was reacted in the presence of palladium catalyst and tert-butyl hydroperoxide at room temperature, a benzoxylated product was formed in up to 68% yield. The protecting group of the obtained benzoxylated product was smoothly removed to afford a free amide in high yield.
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Affiliation(s)
- Kyalo Stephen Kanyiva
- Global Center of Science and Engineering, School of Advanced Science and Engineering, Waseda University
| | - Takanori Shibata
- Department of Chemistry and Biochemistry, School of Advanced Science and Engineering, Waseda University
| | - King Hung Nigel Tang
- Department of Chemistry and Biochemistry, School of Advanced Science and Engineering, Waseda University
| | - Jiarui Wang
- Department of Chemistry and Biochemistry, School of Advanced Science and Engineering, Waseda University
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7
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Dagar N, Singh S, Roy SR. Copper Catalyzed‐TBHP/DTBP Promoted C(sp
2
)−H Bond Scission of Aldehydes: An Approach to Transform Aldehyde to Esters. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100319] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Neha Dagar
- Department of Chemistry Indian Institute of Technology Delhi Indian Institute of Technology Delhi Hauz Khas New Delhi 110016 India
| | - Swati Singh
- Department of Chemistry Indian Institute of Technology Delhi Indian Institute of Technology Delhi Hauz Khas New Delhi 110016 India
| | - Sudipta Raha Roy
- Department of Chemistry Indian Institute of Technology Delhi Indian Institute of Technology Delhi Hauz Khas New Delhi 110016 India
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8
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Wang H, Li T, Hu D, Tong X, Zheng L, Xia C. Acylation of Arenes with Aldehydes through Dual C-H Activations by Merging Photocatalysis and Palladium Catalysis. Org Lett 2021; 23:3772-3776. [PMID: 33872039 DOI: 10.1021/acs.orglett.1c01184] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An acylation of arenes with aldehydes through dual C-H activations at room temperature is reported. The acylation was initiated by phenanthraquinone-catalyzed hydrogen atom transfer from aldehyde under visible light irradiation. The aldehyde-derived acyl radical merged with palladium-catalyzed activation of arenes to afford the cross coupling products.
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Affiliation(s)
- Haiyang Wang
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Provincial Center for Research & Development of Natural Products, School of Chemical Science and Technology, Yunnan University, Kunming 650091, China
| | - Tao Li
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Provincial Center for Research & Development of Natural Products, School of Chemical Science and Technology, Yunnan University, Kunming 650091, China
| | - Dongyan Hu
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Provincial Center for Research & Development of Natural Products, School of Chemical Science and Technology, Yunnan University, Kunming 650091, China
| | - Xiaogang Tong
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Provincial Center for Research & Development of Natural Products, School of Chemical Science and Technology, Yunnan University, Kunming 650091, China
| | - Liyan Zheng
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Provincial Center for Research & Development of Natural Products, School of Chemical Science and Technology, Yunnan University, Kunming 650091, China
| | - Chengfeng Xia
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Provincial Center for Research & Development of Natural Products, School of Chemical Science and Technology, Yunnan University, Kunming 650091, China
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9
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Kumar U, Sharma A, Kumar N, Kumar Pandey S. Copper‐Catalyzed Chemoselective
O
‐Aroylation of Phenolic Oxime Ethers with Aryl Aldehydes. ChemistrySelect 2021. [DOI: 10.1002/slct.202100809] [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)
- Upendra Kumar
- Department of Chemistry Institute of Science Banaras Hindu University Varanasi 221005 India
| | - Ajay Sharma
- Department of Chemistry Institute of Science Banaras Hindu University Varanasi 221005 India
| | - Naveen Kumar
- Department of Chemistry Institute of Science Banaras Hindu University Varanasi 221005 India
| | - Satyendra Kumar Pandey
- Department of Chemistry Institute of Science Banaras Hindu University Varanasi 221005 India
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10
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Kumar P, Nagtilak PJ, Kapur M. Transition metal-catalyzed C–H functionalizations of indoles. NEW J CHEM 2021. [DOI: 10.1039/d1nj01696b] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
This review summarises a wide range of transformations on the indole skeleton, including arylation, alkenylation, alkynylation, acylation, nitration, borylation, and amidation, using transition-metal catalyzed C–H functionalization as the key step.
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Affiliation(s)
- Pravin Kumar
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhauri, Bhopal 462066, MP, India
| | - Prajyot Jayadev Nagtilak
- 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
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11
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Pd(II)-Catalyzed C-H Acylation of (Hetero)arenes-Recent Advances. Molecules 2020; 25:molecules25143247. [PMID: 32708781 PMCID: PMC7397280 DOI: 10.3390/molecules25143247] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2020] [Revised: 07/13/2020] [Accepted: 07/15/2020] [Indexed: 02/06/2023] Open
Abstract
Di(hetero)aryl ketones are important motifs present in natural products, pharmaceuticals or agrochemicals. In recent years, Pd(II)-catalyzed acylation of (hetero)arenes in the presence of an oxidant has emerged as a catalytic alternative to classical acylation methods, reducing the production of toxic metal waste. Different directing groups and acyl sources are being studied for this purpose, although further development is required to face mainly selectivity problems in order to be applied in the synthesis of more complex molecules. Selected recent developments and applications are covered in this review.
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12
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Zhang X, Zhu P, Zhang R, Li X, Yao T. Visible-Light-Induced Decarboxylative Cyclization of 2-Alkenylarylisocyanides with α-Oxocarboxylic Acids: Access to 2-Acylindoles. J Org Chem 2020; 85:9503-9513. [PMID: 32600039 DOI: 10.1021/acs.joc.0c00039] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
An efficient and practical protocol for visible-light-induced decarboxylative cyclization of 2-alkenylarylisocyanides with α-oxocarboxylic acids has been developed, which afforded a broad range of 2-acylindoles in moderate to good yields. The reaction proceeds through a cascade of acyl radical addition/cyclization reactions under irradiation of an Ir3+ photoredox catalyst without external oxidants and features simple operation, scalability, a broad substrate scope, and good functional group tolerance.
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Affiliation(s)
- Xiaofei Zhang
- College of Chemistry and Chemical Engineering, Shaanxi University of Science and Technology, Xi'an, Shaanxi 710021, China.,Shaanxi Key Laboratory of Chemical Additives for Industry, Shaanxi University of Science and Technology, Xi'an 710021, China
| | - Peiyuan Zhu
- College of Chemistry and Chemical Engineering, Shaanxi University of Science and Technology, Xi'an, Shaanxi 710021, China
| | - Ruihong Zhang
- College of Chemistry and Chemical Engineering, Shaanxi University of Science and Technology, Xi'an, Shaanxi 710021, China
| | - Xiang Li
- College of Chemistry and Chemical Engineering, Shaanxi University of Science and Technology, Xi'an, Shaanxi 710021, China.,Shaanxi Key Laboratory of Chemical Additives for Industry, Shaanxi University of Science and Technology, Xi'an 710021, China
| | - Tuanli Yao
- College of Chemistry and Chemical Engineering, Shaanxi University of Science and Technology, Xi'an, Shaanxi 710021, China.,Shaanxi Key Laboratory of Chemical Additives for Industry, Shaanxi University of Science and Technology, Xi'an 710021, China
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13
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Gramage-Doria R. Steering Site-Selectivity in Transition Metal-Catalyzed C-H Bond Functionalization: the Challenge of Benzanilides. Chemistry 2020; 26:9688-9709. [PMID: 32237177 DOI: 10.1002/chem.202000672] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Revised: 03/18/2020] [Indexed: 12/31/2022]
Abstract
Selective C-H bond functionalization catalyzed by metal complexes have completely revolutionized the way in which chemical synthesis is conceived nowadays. Typically, the reactivity of a transition metal catalyst is the key to control the site-, regio- and/or stereo-selectivity of a C-H bond functionalization. Of particular interests are molecules that contain multiple C-H bonds prone to undergo C-H bond activations with very similar bond dissociation energies at different positions. This is the case of benzanilides, relevant chemical motifs that are found in many useful fine chemicals, in which two C-H sites are present in chemically different aromatic fragments. In the last years, it has been found that depending on the metal catalyst and the reaction conditions, the amide motif might behave as a directing group towards the metal-catalyzed C-H bond activation in the benzamide site or in the anilide site. The impact and the consequences of such subtle control of site-selectivity are herein reviewed with important applications in carbon-carbon and carbon-heteroatom bond forming processes. The mechanisms unraveling these unique transformations are discussed in order to provide a better understanding for future developments in the field of site-selective C-H bond functionalization with transition metal catalysts.
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14
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Kumar GR, Banik S, Ramesh B, Sridhar B, Venkata Subba Reddy B. Oxidative Annulation of 3-Aryl-2 H
-benzo[e][1,2,4]thiadiazine-1,1-dioxides with Aryl Aldehydes: An Easy Access to Hydroxyisoindolo[1,2- b
] benzothiadiazinedioxide Scaffolds. European J Org Chem 2020. [DOI: 10.1002/ejoc.201901509] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- G. Ravi Kumar
- Fluoro & Agrochemicals; CSIR-Indian Institute of Chemical Technology; 500 007 Hyderabad India
| | - Swarnayu Banik
- Fluoro & Agrochemicals; CSIR-Indian Institute of Chemical Technology; 500 007 Hyderabad India
| | - Boora Ramesh
- Fluoro & Agrochemicals; CSIR-Indian Institute of Chemical Technology; 500 007 Hyderabad India
| | - Balasubramanian Sridhar
- Laboratory of X-ray Crystallography; CSIR-Indian Institute of Chemical Technology; 500 007 Hyderabad India
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15
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Ligon ES, Nawyn J, Jones LV, Allred BM, Reinhardt DV, France S. Synthesis of Flubromazepam Positional Isomers for Forensic Analysis. J Org Chem 2019; 84:10280-10291. [PMID: 31328518 DOI: 10.1021/acs.joc.9b01433] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Designer benzodiazepines have recently appeared in many forensic cases as legal alternatives to federally scheduled drugs such as diazepam (Valium) and alprazolam (Xanax). Though current forensic instrumental techniques are often sufficient for identifying novel psychoactive substances, they may not readily differentiate between potential positional isomers. Additionally, characterization data for positional isomers of known designer benzodiazepines are widely nonexistent. In this study, flubromazepam, a recognized designer benzodiazepine since 2012, was targeted for synthesis and characterization due to its potential for federal scheduling and current legal status within the United States. A practical synthetic method was developed to prepare purified reference materials for each positional isomer of flubromazepam in which the positions of the bromine and fluorine substituents were varied. Possible isomers (9 of the 12) were successfully prepared and used for further analysis.
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16
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Penteado F, Lopes EF, Alves D, Perin G, Jacob RG, Lenardão EJ. α-Keto Acids: Acylating Agents in Organic Synthesis. Chem Rev 2019; 119:7113-7278. [DOI: 10.1021/acs.chemrev.8b00782] [Citation(s) in RCA: 111] [Impact Index Per Article: 22.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Filipe Penteado
- Laboratório de Síntese Orgânica Limpa - LASOL - CCQFA - Universidade Federal de Pelotas - UFPel, P.O. Box 354, 96010-900 Pelotas, RS, Brazil
| | - Eric F. Lopes
- Laboratório de Síntese Orgânica Limpa - LASOL - CCQFA - Universidade Federal de Pelotas - UFPel, P.O. Box 354, 96010-900 Pelotas, RS, Brazil
| | - Diego Alves
- Laboratório de Síntese Orgânica Limpa - LASOL - CCQFA - Universidade Federal de Pelotas - UFPel, P.O. Box 354, 96010-900 Pelotas, RS, Brazil
| | - Gelson Perin
- Laboratório de Síntese Orgânica Limpa - LASOL - CCQFA - Universidade Federal de Pelotas - UFPel, P.O. Box 354, 96010-900 Pelotas, RS, Brazil
| | - Raquel G. Jacob
- Laboratório de Síntese Orgânica Limpa - LASOL - CCQFA - Universidade Federal de Pelotas - UFPel, P.O. Box 354, 96010-900 Pelotas, RS, Brazil
| | - Eder J. Lenardão
- Laboratório de Síntese Orgânica Limpa - LASOL - CCQFA - Universidade Federal de Pelotas - UFPel, P.O. Box 354, 96010-900 Pelotas, RS, Brazil
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17
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Chen MM, Shao LY, Lun LJ, Wu YL, Fu XP, Ji YF. Palladium-catalyzed late-stage mono-aroylation of the fully substituted pyrazoles via aromatic C–H bond activation. CHINESE CHEM LETT 2019. [DOI: 10.1016/j.cclet.2018.09.022] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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18
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Xiao YM, Liu Y, Mai WP, Mao P, Yuan JW, Yang LR. A Novel and Facile Synthesis of Chroman-4-one Derivatives via
Cascade Radical Cyclization Under Metal-free Condition. ChemistrySelect 2019. [DOI: 10.1002/slct.201900147] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Yong-Mei Xiao
- School of Chemistry and Chemical Engineering; Henan University of Technology; Zhengzhou 450001 China
| | - Yang Liu
- School of Chemistry and Chemical Engineering; Henan University of Technology; Zhengzhou 450001 China
| | - Wen-Peng Mai
- School of Chemistry and Chemical Engineering; Henan University of Technology; Zhengzhou 450001 China
- School of Materials and Chemical Engineering; Henan University of Engineering; Zhengzhou 450006 China
| | - Pu Mao
- School of Chemistry and Chemical Engineering; Henan University of Technology; Zhengzhou 450001 China
| | - Jin-Wei Yuan
- School of Chemistry and Chemical Engineering; Henan University of Technology; Zhengzhou 450001 China
| | - Liang-Ru Yang
- School of Chemistry and Chemical Engineering; Henan University of Technology; Zhengzhou 450001 China
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19
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Li JF, Zhao RF, Zhou FQ, She MY, Zhang J, Yin B, Zhang SY, Li JL. Exploring the necessity of an acidic additive for Pd(ii)-catalyzed exclusive C4-fluoroalkylation of 3-acetylindole: a detailed DFT study on the mechanism and regioselectivity. Org Chem Front 2019. [DOI: 10.1039/c8qo01338a] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The regioselectivity of Pd(ii)-catalyzed exclusive C4-fluoroalkylation of 3-acetylindole arises from the transfer of electron density from the substrate to the catalyst.
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Affiliation(s)
- Jin-Feng Li
- MOE Key Laboratory of Synthetic and Natural Functional Molecule Chemistry
- College of Chemistry and Materials Science
- Northwest University
- Xi'an 710069
- China
| | - Ru-Fang Zhao
- MOE Key Laboratory of Synthetic and Natural Functional Molecule Chemistry
- College of Chemistry and Materials Science
- Northwest University
- Xi'an 710069
- China
| | - Fu-Qiang Zhou
- MOE Key Laboratory of Synthetic and Natural Functional Molecule Chemistry
- College of Chemistry and Materials Science
- Northwest University
- Xi'an 710069
- China
| | - Meng-Yao She
- MOE Key Laboratory of Synthetic and Natural Functional Molecule Chemistry
- College of Chemistry and Materials Science
- Northwest University
- Xi'an 710069
- China
| | - Jun Zhang
- MOE Key Laboratory of Synthetic and Natural Functional Molecule Chemistry
- College of Chemistry and Materials Science
- Northwest University
- Xi'an 710069
- China
| | - Bing Yin
- MOE Key Laboratory of Synthetic and Natural Functional Molecule Chemistry
- College of Chemistry and Materials Science
- Northwest University
- Xi'an 710069
- China
| | - Sheng-Yong Zhang
- MOE Key Laboratory of Synthetic and Natural Functional Molecule Chemistry
- College of Chemistry and Materials Science
- Northwest University
- Xi'an 710069
- China
| | - Jian-Li Li
- MOE Key Laboratory of Synthetic and Natural Functional Molecule Chemistry
- College of Chemistry and Materials Science
- Northwest University
- Xi'an 710069
- China
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20
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Shao LY, Xu Z, Wang CY, Fu XP, Chen MM, Liu HW, Ji YF. Palladium-catalyzed direct mono-aroylation of O-arylmethyl and aryl-substituted acetoxime ethers. Org Biomol Chem 2018; 16:6284-6294. [PMID: 30116808 DOI: 10.1039/c8ob01400k] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
An efficient palladium-catalyzed ortho-aroylation of O-arylmethyl and aryl-substituted acetoxime ethers has been developed; this method has high mono-site selectivity and does not require exogenous ligands. Under the direction of a simple exo-acetoxime auxiliary, a broad scope of masked arylmethyl alcohols and phenols as well as various aromatic aldehydes are compatible with this transformation, which probably follows a mechanistic pathway involving a six- or five-membered exo-cyclopalladated intermediate. The strategy can be expediently adopted to prepare synthetically valuable 1H-benzo[d][1,2]oxazines and benzo[d]isoxazoles. The directing group can be easily removed from the products to afford the functionalized diaryl ketones.
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Affiliation(s)
- Ling-Yan Shao
- School of Pharmacy, East China University of Science & Technology, 130 Meilong Road, Shanghai 200237, P. R. China.
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21
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Zhu R, Lu S, Wang Q, Bai J, Wang Y, Yu Q, Huang J. Selectfluor-mediated mono-C–H activation: The syntheses of mono-ortho-substituted anilides. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.05.061] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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22
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Zhang L, Zhang G, Li Y, Wang S, Lei A. The synergistic effect of self-assembly and visible-light induced the oxidative C-H acylation of N-heterocyclic aromatic compounds with aldehydes. Chem Commun (Camb) 2018; 54:5744-5747. [PMID: 29780998 DOI: 10.1039/c8cc02342e] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Constructing carbon-carbon bonds through oxidative cross-coupling between two hydrocarbon compounds is regarded as a foundational issue in green chemistry. High atom-economy and mild conditions are long term pursued goals in this field. Herein, we developed a visible-light mediated direct cross-coupling between N-heterocycles and aldehydes without the requirement of a photocatalyst. Several N-heterocycles afforded the acylation products with aromatic or aliphatic aldehydes in good yields. The reaction can be conducted under room temperature and easily scaled up.
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Affiliation(s)
- Lingling Zhang
- College of Chemistry and Molecular Sciences, The Institute for Advanced Studies, Wuhan University, Wuhan, Hubei 430072, People's Republic of China.
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23
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Váňa J, Lang J, Šoltésová M, Hanusek J, Růžička A, Sedlák M, Roithová J. The role of trinuclear species in a palladium acetate/trifluoroacetic acid catalytic system. Dalton Trans 2018; 46:16269-16275. [PMID: 29138768 DOI: 10.1039/c7dt03832a] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Reactions catalyzed by palladium(ii) acetate and trifluoroacetic acid (TFA) have a clear preactivation phase. However, the structure of real catalytic species remains unclear. We show that the key species are cyclic trinuclear complexes of composition [Pd3(OAc)6-x(OTFA)x] (x = 1-6) formed by a sequential ligand exchange from [Pd3(OAc)6]. Furthermore, we prove that the trinuclear palladium backbone of the precatalyst remains preserved during the first phase of the C-H activation reaction of acetanilides. In other words, the reaction pathway including the trinuclear species should be taken into account in discussion about mechanisms of the reactions catalyzed by palladium acetates.
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Affiliation(s)
- Jiří Váňa
- Institute of Organic Chemistry and Technology, Faculty of Chemical Technology, University of Pardubice, Studentská 573, 53210 Pardubice, Czech Republic.
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24
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Kumar P, Sharma AK, Guntreddi T, Singh R, Singh KN. Transition-Metal-Free Regiospecific Aroylation of Nitroarenes Using Ethyl Arylacetates at Room Temperature. Org Lett 2018; 20:744-747. [PMID: 29345475 DOI: 10.1021/acs.orglett.7b03882] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
A novel regiospecific C(sp3)-C(sp2) coupling between ethyl arylacetates and nitroarenes has been developed to deliver biaryl ketones in excellent yields. The protocol is metal-free, mild, and compatible with a number of functional groups on both of the reacting partners.
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Affiliation(s)
- Promod Kumar
- Department of Chemistry (Centre of Advanced Study), Institute of Science, Banaras Hindu University , Varanasi-221005, India
| | - Anup Kumar Sharma
- Department of Chemistry (Centre of Advanced Study), Institute of Science, Banaras Hindu University , Varanasi-221005, India
| | - Tirumaleswararao Guntreddi
- Department of Chemistry (Centre of Advanced Study), Institute of Science, Banaras Hindu University , Varanasi-221005, India
| | - Rahul Singh
- Department of Chemistry (Centre of Advanced Study), Institute of Science, Banaras Hindu University , Varanasi-221005, India
| | - Krishna Nand Singh
- Department of Chemistry (Centre of Advanced Study), Institute of Science, Banaras Hindu University , Varanasi-221005, India
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25
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Deb M, Hazra S, Gupta A, Elias AJ. Synthesis of unsymmetrical multi-aroyl derivatives of ferrocene using palladium catalysed oxidative C–H aroylation. Dalton Trans 2018; 47:7229-7236. [DOI: 10.1039/c8dt01147h] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Palladium catalysed oxidative C–H aroylation of ferrocene: accessing the multi-aroyl derivatives of ferrocene.
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Affiliation(s)
- Mayukh Deb
- Department of Chemistry
- Indian Institute of Technology Delhi
- New Delhi-110016
- India
| | - Susanta Hazra
- Department of Chemistry
- Indian Institute of Technology Delhi
- New Delhi-110016
- India
| | - Ajay Gupta
- Department of Chemistry
- Indian Institute of Technology Delhi
- New Delhi-110016
- India
| | - Anil J. Elias
- Department of Chemistry
- Indian Institute of Technology Delhi
- New Delhi-110016
- India
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26
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Ma W, Weng Z, Rogge T, Gu L, Lin J, Peng A, Luo X, Gou X, Ackermann L. Ruthenium(II)-Catalyzed C−H Chalcogenation of Anilides. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201701147] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Wenbo Ma
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics; Chengdu University; Chengdu People's Republic of China 610052
- Key Laboratory of Medicinal and Edible Plants Resources Development of Sichuan Education Department, Sichuan Industrial Institute of Antibiotics; Chengdu University; Chengdu People's Republic of China 610052
| | - Zhengyun Weng
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics; Chengdu University; Chengdu People's Republic of China 610052
- Key Laboratory of Medicinal and Edible Plants Resources Development of Sichuan Education Department, Sichuan Industrial Institute of Antibiotics; Chengdu University; Chengdu People's Republic of China 610052
| | - Torben Rogge
- Institut fuer Organische und Biomolekulare Chemie, Georg-August-Universitaet; Tammannstrasse 2 37077 Goettingen Germany
| | - Linghui Gu
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics; Chengdu University; Chengdu People's Republic of China 610052
- Key Laboratory of Medicinal and Edible Plants Resources Development of Sichuan Education Department, Sichuan Industrial Institute of Antibiotics; Chengdu University; Chengdu People's Republic of China 610052
| | - Jiafu Lin
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics; Chengdu University; Chengdu People's Republic of China 610052
- Key Laboratory of Medicinal and Edible Plants Resources Development of Sichuan Education Department, Sichuan Industrial Institute of Antibiotics; Chengdu University; Chengdu People's Republic of China 610052
| | - Ai Peng
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics; Chengdu University; Chengdu People's Republic of China 610052
- Key Laboratory of Medicinal and Edible Plants Resources Development of Sichuan Education Department, Sichuan Industrial Institute of Antibiotics; Chengdu University; Chengdu People's Republic of China 610052
| | - Xiang Luo
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics; Chengdu University; Chengdu People's Republic of China 610052
- Key Laboratory of Medicinal and Edible Plants Resources Development of Sichuan Education Department, Sichuan Industrial Institute of Antibiotics; Chengdu University; Chengdu People's Republic of China 610052
| | - Xiaojun Gou
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics; Chengdu University; Chengdu People's Republic of China 610052
- Key Laboratory of Medicinal and Edible Plants Resources Development of Sichuan Education Department, Sichuan Industrial Institute of Antibiotics; Chengdu University; Chengdu People's Republic of China 610052
| | - Lutz Ackermann
- Institut fuer Organische und Biomolekulare Chemie, Georg-August-Universitaet; Tammannstrasse 2 37077 Goettingen Germany
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27
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Basuli S, Satyanarayana G. Palladium Catalyzed Direct Acylation of Iodo-Acetanilides/Iodo-Phenyl Acetates: Domino One-Pot Synthesis of 2-Quinolinones. European J Org Chem 2017. [DOI: 10.1002/ejoc.201701250] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Scuhand Basuli
- Department of Chemistry; Indian Institute of Technology Hyderabad; Kandi - 502 285 Sangareddy Telangana INDIA
| | - Gedu Satyanarayana
- Department of Chemistry; Indian Institute of Technology Hyderabad; Kandi - 502 285 Sangareddy Telangana INDIA
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28
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Das R, Kumar GS, Kapur M. Amides as Weak Coordinating Groups in Proximal C-H Bond Activation. European J Org Chem 2017. [DOI: 10.1002/ejoc.201700546] [Citation(s) in RCA: 89] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Riki Das
- Department of Chemistry; Indian Institute of Science Education and Research Bhopal; Bhopal Bypass Road, Bhauri 462066 Bhopal MP India
| | - Gangam Srikanth Kumar
- Department of Chemistry; Indian Institute of Science Education and Research Bhopal; Bhopal Bypass Road, Bhauri 462066 Bhopal MP India
| | - Manmohan Kapur
- Department of Chemistry; Indian Institute of Science Education and Research Bhopal; Bhopal Bypass Road, Bhauri 462066 Bhopal MP India
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29
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Yi H, Zhang G, Wang H, Huang Z, Wang J, Singh AK, Lei A. Recent Advances in Radical C-H Activation/Radical Cross-Coupling. Chem Rev 2017. [PMID: 28639787 DOI: 10.1021/acs.chemrev.6b00620] [Citation(s) in RCA: 865] [Impact Index Per Article: 123.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Research and industrial interest in radical C-H activation/radical cross-coupling chemistry has continuously grown over the past few decades. These reactions offer fascinating and unconventional approaches toward connecting molecular fragments with high atom- and step-economy that are often complementary to traditional methods. Success in this area of research was made possible through the development of photocatalysis and first-row transition metal catalysis along with the use of peroxides as radical initiators. This Review provides a brief and concise overview of the current status and latest methodologies using radicals or radical cations as key intermediates produced via radical C-H activation. This Review includes radical addition, radical cascade cyclization, radical/radical cross-coupling, coupling of radicals with M-R groups, and coupling of radical cations with nucleophiles (Nu).
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Affiliation(s)
- Hong Yi
- College of Chemistry and Molecular Sciences, The Institute for Advanced Studies (IAS), Wuhan University , Wuhan, Hubei 430072, China
| | - Guoting Zhang
- College of Chemistry and Molecular Sciences, The Institute for Advanced Studies (IAS), Wuhan University , Wuhan, Hubei 430072, China
| | - Huamin Wang
- College of Chemistry and Molecular Sciences, The Institute for Advanced Studies (IAS), Wuhan University , Wuhan, Hubei 430072, China
| | - Zhiyuan Huang
- College of Chemistry and Molecular Sciences, The Institute for Advanced Studies (IAS), Wuhan University , Wuhan, Hubei 430072, China
| | - Jue Wang
- College of Chemistry and Molecular Sciences, The Institute for Advanced Studies (IAS), Wuhan University , Wuhan, Hubei 430072, China
| | - Atul K Singh
- College of Chemistry and Molecular Sciences, The Institute for Advanced Studies (IAS), Wuhan University , Wuhan, Hubei 430072, China
| | - Aiwen Lei
- College of Chemistry and Molecular Sciences, The Institute for Advanced Studies (IAS), Wuhan University , Wuhan, Hubei 430072, China.,National Research Center for Carbohydrate Synthesis, Jiangxi Normal University , Nanchang 330022, China
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30
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Váňa J, Terencio T, Petrović V, Tischler O, Novák Z, Roithová J. Palladium-Catalyzed C–H Activation: Mass Spectrometric Approach to Reaction Kinetics in Solution. Organometallics 2017. [DOI: 10.1021/acs.organomet.6b00960] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jiří Váňa
- Department
of Organic Chemistry, Faculty of Science, Charles University in Prague, Hlavova 2030/8, 12843 Prague 2, Czech Republic
- Institute
of Organic Chemistry and Technology, Faculty of Chemical Technology, University of Pardubice, Studentská 573, 53210 Pardubice, Czech Republic
| | - Thibault Terencio
- Department
of Organic Chemistry, Faculty of Science, Charles University in Prague, Hlavova 2030/8, 12843 Prague 2, Czech Republic
| | - Vladimir Petrović
- Department
of Organic Chemistry, Faculty of Science, Charles University in Prague, Hlavova 2030/8, 12843 Prague 2, Czech Republic
- University of Kragujevac, Faculty of Science,
Department of Chemistry, Radoja Domanovića 12, 34000 Kragujevac, Serbia
| | - Orsolya Tischler
- MTA-ELTE
“Lendület” Catalysis and Organic Synthesis Research
Group, Institute of Chemistry, Eötvös University, Pázmány
Péter stny. 1/a, H-1117 Budapest, Hungary
| | - Zoltán Novák
- MTA-ELTE
“Lendület” Catalysis and Organic Synthesis Research
Group, Institute of Chemistry, Eötvös University, Pázmány
Péter stny. 1/a, H-1117 Budapest, Hungary
| | - Jana Roithová
- Department
of Organic Chemistry, Faculty of Science, Charles University in Prague, Hlavova 2030/8, 12843 Prague 2, Czech Republic
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31
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Sharma UK, Gemoets HPL, Schröder F, Noël T, Van der Eycken EV. Merger of Visible-Light Photoredox Catalysis and C–H Activation for the Room-Temperature C-2 Acylation of Indoles in Batch and Flow. ACS Catal 2017. [DOI: 10.1021/acscatal.7b00840] [Citation(s) in RCA: 101] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Upendra K. Sharma
- Laboratory
for Organic and Microwave-Assisted Chemistry (LOMAC), Department of
Chemistry, University of Leuven (KU Leuven), Celestijnenlaan 200F, B-3001 Leuven, Belgium
| | - Hannes P. L. Gemoets
- Department
of Chemical Engineering and Chemistry, Micro Flow Chemistry and Process
Technology, Eindhoven University of Technology, Den Dolech 2, 5612 AZ Eindhoven, The Netherlands
| | - Felix Schröder
- Laboratory
for Organic and Microwave-Assisted Chemistry (LOMAC), Department of
Chemistry, University of Leuven (KU Leuven), Celestijnenlaan 200F, B-3001 Leuven, Belgium
| | - Timothy Noël
- Department
of Chemical Engineering and Chemistry, Micro Flow Chemistry and Process
Technology, Eindhoven University of Technology, Den Dolech 2, 5612 AZ Eindhoven, The Netherlands
| | - Erik V. Van der Eycken
- Laboratory
for Organic and Microwave-Assisted Chemistry (LOMAC), Department of
Chemistry, University of Leuven (KU Leuven), Celestijnenlaan 200F, B-3001 Leuven, Belgium
- Peoples’ Friendship University of Russia (RUDN University), 6 Miklukho-Maklaya Street, Moscow 117198, Russia
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32
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McAteer DC, Javed E, Huo L, Huo S. Platinum-Catalyzed Double Acylation of 2-(Aryloxy)pyridines via Direct C–H Activation. Org Lett 2017; 19:1606-1609. [DOI: 10.1021/acs.orglett.7b00423] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Donald C. McAteer
- Department of Chemistry, East Carolina University, Greenville, North Carolina 27858, United States
| | - Erman Javed
- Department of Chemistry, East Carolina University, Greenville, North Carolina 27858, United States
| | - Lily Huo
- Department of Chemistry, East Carolina University, Greenville, North Carolina 27858, United States
| | - Shouquan Huo
- Department of Chemistry, East Carolina University, Greenville, North Carolina 27858, United States
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33
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Obulesu O, Babu KH, Nanubolu JB, Suresh S. Copper-Catalyzed Tandem O-Arylation–Oxidative Cross Coupling: Synthesis of Chromone Fused Pyrazoles. J Org Chem 2017; 82:2926-2934. [DOI: 10.1021/acs.joc.6b02890] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Owk Obulesu
- Organic
and Biomolecular Chemistry Division, ‡Academy of Scientific and Innovative
Research (AcSIR), and §Center for X-ray Crystallography, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500 007, India
| | - K. Harish Babu
- Organic
and Biomolecular Chemistry Division, ‡Academy of Scientific and Innovative
Research (AcSIR), and §Center for X-ray Crystallography, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500 007, India
| | - Jagadeesh Babu Nanubolu
- Organic
and Biomolecular Chemistry Division, ‡Academy of Scientific and Innovative
Research (AcSIR), and §Center for X-ray Crystallography, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500 007, India
| | - Surisetti Suresh
- Organic
and Biomolecular Chemistry Division, ‡Academy of Scientific and Innovative
Research (AcSIR), and §Center for X-ray Crystallography, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500 007, India
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34
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Chen C, Liu W, Zhou P. TBHP-mediated highly efficient dehydrogenative cross-oxidative coupling of methylarenes with acetanilides. Beilstein J Org Chem 2017; 12:2250-2255. [PMID: 28144291 PMCID: PMC5238673 DOI: 10.3762/bjoc.12.217] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2016] [Accepted: 10/11/2016] [Indexed: 11/23/2022] Open
Abstract
A TBHP-mediated dehydrogenative cross-oxidative-coupling approach has been developed for the synthesis of N-arylbenzamides from methylarenes and acetanilides. This cross-coupling method is free of transition metal catalysts and ligands, and no extra organic solvents are required, which make it an useful and attractive strategy for the straightforward construction of C–N bonds. Besides, this conversion is an important complement to the conventional C–N forming strategies.
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Affiliation(s)
- Cui Chen
- College of Chemical Engineering, Guangdong University of Petrochemical Technology, 2 Guandu Road, Maoming 525000, P. R. China. ; Tel: +86-668-2923444
| | - Weibing Liu
- College of Chemical Engineering, Guangdong University of Petrochemical Technology, 2 Guandu Road, Maoming 525000, P. R. China. ; Tel: +86-668-2923444
| | - Peng Zhou
- College of Chemical Engineering, Guangdong University of Petrochemical Technology, 2 Guandu Road, Maoming 525000, P. R. China. ; Tel: +86-668-2923444
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35
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Singh JB, Mishra K, Gupta T, M.Singh R. TBHP Promoted Cross-Dehydrogenative coupling (CDC) Reaction: Metal/Additive-Free Synthesis of Chromone-Fused Quinolines. ChemistrySelect 2017. [DOI: 10.1002/slct.201601527] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Jay B. Singh
- Department of Chemistry, Centre of Advanced Study, Institute of Science; Banaras Hindu University; Varanasi India
| | - Kalpana Mishra
- Department of Chemistry, Centre of Advanced Study, Institute of Science; Banaras Hindu University; Varanasi India
| | - Tanu Gupta
- Department of Chemistry, Centre of Advanced Study, Institute of Science; Banaras Hindu University; Varanasi India
| | - Radhey M.Singh
- Department of Chemistry, Centre of Advanced Study, Institute of Science; Banaras Hindu University; Varanasi India
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36
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Tischler O, Kovács S, Érsek G, Králl P, Daru J, Stirling A, Novák Z. Study of Lewis acid accelerated palladium catalyzed C H activation. ACTA ACUST UNITED AC 2017. [DOI: 10.1016/j.molcata.2016.09.018] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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37
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Maiti S, Burgula L, Chakraborti G, Dash J. Palladium-Catalyzed Pyridine-Directed Regioselective Oxidative C-H Acylation of Carbazoles by Using Aldehydes as the Acyl Source. European J Org Chem 2016. [DOI: 10.1002/ejoc.201601322] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Subhadip Maiti
- Department of Organic Chemistry; Indian Association for the Cultivation of Science; Jadavpur 700032 Kolkata India
| | - Laxminarayana Burgula
- Department of Organic Chemistry; Indian Association for the Cultivation of Science; Jadavpur 700032 Kolkata India
| | - Gargi Chakraborti
- Department of Organic Chemistry; Indian Association for the Cultivation of Science; Jadavpur 700032 Kolkata India
| | - Jyotirmayee Dash
- Department of Organic Chemistry; Indian Association for the Cultivation of Science; Jadavpur 700032 Kolkata India
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38
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Hummel JR, Boerth JA, Ellman JA. Transition-Metal-Catalyzed C-H Bond Addition to Carbonyls, Imines, and Related Polarized π Bonds. Chem Rev 2016; 117:9163-9227. [PMID: 27936637 DOI: 10.1021/acs.chemrev.6b00661] [Citation(s) in RCA: 559] [Impact Index Per Article: 69.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The transition-metal-catalyzed addition of C-H bonds to carbonyls, imines, and related polarized π bonds has emerged as a particularly efficient and powerful approach for the construction of an incredibly diverse array of heteroatom-substituted products. Readily available and stable inputs are typically employed, and reactions often proceed with very high functional group compatibility and without the production of waste byproducts. Additionally, many transition-metal-catalyzed C-H bond additions to polarized π bonds occur within cascade reaction sequences to provide rapid access to a diverse array of different heterocyclic as well as carbocyclic products. This review highlights the diversity of transformations that have been achieved, catalysts that have been used, and types of products that have been prepared through the transition-metal-catalyzed addition of C-H bonds to carbonyls, imines, and related polarized π bonds.
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Affiliation(s)
- Joshua R Hummel
- Department of Chemistry, Yale University , 225 Prospect Street, New Haven, Connecticut 06520, United States
| | - Jeffrey A Boerth
- Department of Chemistry, Yale University , 225 Prospect Street, New Haven, Connecticut 06520, United States
| | - Jonathan A Ellman
- Department of Chemistry, Yale University , 225 Prospect Street, New Haven, Connecticut 06520, United States
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39
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Palladium-Catalyzed Acylation of Arenes by 1,2,3-Triazole-Directed C-H Activation. European J Org Chem 2016. [DOI: 10.1002/ejoc.201601061] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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40
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Perumgani PC, Parvathaneni SP, Keesara S, Mandapati MR. Recyclable Pd(II)complex catalyzed oxidative sp2 CH bond acylation of 2-aryl pyridines with toluene derivatives. J Organomet Chem 2016. [DOI: 10.1016/j.jorganchem.2016.08.028] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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41
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Yu X, Yao W, Wan H, Xu Z, Wang D. Pd(TFA)2-catalyzed oxidative coupling of anilides with olefins through CH bond activation under non-acidic conditions. J Organomet Chem 2016. [DOI: 10.1016/j.jorganchem.2016.08.025] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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42
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Zhang X, Yu X, Feng X, Yamamoto Y, Almansour AI, Arumugam N, Kumar RS, Bao M. Rhodium-Catalyzed Oxidative Benzannulation ofN-Pivaloylanilines with Internal Alkynes through Dual C−H Bond Activation: Synthesis of Highly Substituted Naphthalenes. Chem Asian J 2016; 11:3241-3250. [DOI: 10.1002/asia.201601131] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2016] [Revised: 09/12/2016] [Indexed: 01/13/2023]
Affiliation(s)
- Xuan Zhang
- State Key Laboratory of Fine Chemicals; Dalian University of Technology; Dalian 116023 China E
| | - Xiaoqiang Yu
- State Key Laboratory of Fine Chemicals; Dalian University of Technology; Dalian 116023 China E
| | - Xiujuan Feng
- State Key Laboratory of Fine Chemicals; Dalian University of Technology; Dalian 116023 China E
| | - Yoshinori Yamamoto
- State Key Laboratory of Fine Chemicals; Dalian University of Technology; Dalian 116023 China E
- WPI-AIMR (WPI-Advanced Institute for Materials Research); Tohoku University; Sendai 980-8577 Japan
| | - Abdulrahman I. Almansour
- Department of Chemistry; College of Sciences; King Saud University; P.O. Box 2455 Riyadh 11451 Saudi Arabia
| | - Natarajan Arumugam
- Department of Chemistry; College of Sciences; King Saud University; P.O. Box 2455 Riyadh 11451 Saudi Arabia
| | - Raju Suresh Kumar
- Department of Chemistry; College of Sciences; King Saud University; P.O. Box 2455 Riyadh 11451 Saudi Arabia
| | - Ming Bao
- State Key Laboratory of Fine Chemicals; Dalian University of Technology; Dalian 116023 China E
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43
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Yu S, Li Y, Kong L, Zhou X, Tang G, Lan Y, Li X. Mild Acylation of C(sp3)–H and C(sp2)–H Bonds under Redox-Neutral Rh(III) Catalysis. ACS Catal 2016. [DOI: 10.1021/acscatal.6b02668] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Songjie Yu
- Dalian
Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Yingzi Li
- School
of Chemistry and Chemical Engineering, Chongqing University, Chongqing, China
| | - Lingheng Kong
- Dalian
Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Xukai Zhou
- Dalian
Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Guodong Tang
- Dalian
Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Yu Lan
- School
of Chemistry and Chemical Engineering, Chongqing University, Chongqing, China
| | - Xingwei Li
- Dalian
Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
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44
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Mu B, Li J, Zou D, Wu Y, Chang J, Wu Y. Pd-Catalyzed Tandem Cyclization via C–H Arylation and Acylation for the Construction of Polycyclic Scaffolds. Org Lett 2016; 18:5260-5263. [DOI: 10.1021/acs.orglett.6b02571] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Bing Mu
- The
College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450052, P. R. China
- The
College of Chemistry and Chemical Engineering, Zhengzhou Normal University, Zhengzhou 450044, P. R. China
- Medical
School, Huanghe Science and Technology College, Zhengzhou 450000, P. R. China
| | - Jingya Li
- Tetranov Biopharm,
LLC, Zhengzhou 450052, P. R. China
| | - Dapeng Zou
- The
College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450052, P. R. China
| | - Yusheng Wu
- The
College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450052, P. R. China
- Tetranov Biopharm,
LLC, Zhengzhou 450052, P. R. China
| | - Junbiao Chang
- The
College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450052, P. R. China
| | - Yangjie Wu
- The
College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450052, P. R. China
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45
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Kianmehr E, Faghih N, Tanbakouchian A, Mahdavi M. Palladium-Catalyzed Regioselective Direct Cyanation of Acetanilide Derivatives with K4[Fe(CN)6] by C-H Bond Activation. European J Org Chem 2016. [DOI: 10.1002/ejoc.201600618] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Ebrahim Kianmehr
- School of Chemistry; College of Science; University of Tehran; Tehran Iran
| | - Nasser Faghih
- School of Chemistry; College of Science; University of Tehran; Tehran Iran
| | | | - Mohammad Mahdavi
- Drug Design and Development Research Center; College of Science; Tehran University of Medical Sciences; Tehran Iran
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46
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Che C, Huang Q, Zheng H, Zhu G. Copper-catalyzed cascade annulation of unsaturated α-bromocarbonyls with enynals: a facile access to ketones from aldehydes. Chem Sci 2016; 7:4134-4139. [PMID: 30155057 PMCID: PMC6014112 DOI: 10.1039/c5sc04980f] [Citation(s) in RCA: 58] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2015] [Accepted: 03/03/2016] [Indexed: 12/27/2022] Open
Abstract
A Cu-catalyzed cascade annulation of enynals with alkenyl or alkynyl α-bromocarbonyls for the synthesis of various cyclohexenone-fused polycyclic compounds is described. Up to six new C-C bonds and four new carbocycles can be established in a single reaction, highlighting the high efficiency and step-economics of this protocol. This reaction offers a novel and straightforward entry to the synthesis of ketones featuring the addition of carbon radicals to aldehydes.
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Affiliation(s)
- Chao Che
- Department of Chemistry , Zhejiang Normal University , 688 Yingbin Road , Jinhua 321004 , China .
| | - Qianwen Huang
- Department of Chemistry , Zhejiang Normal University , 688 Yingbin Road , Jinhua 321004 , China .
| | - Hanliang Zheng
- Department of Chemistry , Zhejiang Normal University , 688 Yingbin Road , Jinhua 321004 , China .
| | - Gangguo Zhu
- Department of Chemistry , Zhejiang Normal University , 688 Yingbin Road , Jinhua 321004 , China .
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47
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Pandey G, Laha R, Singh D. Benzylic C(sp(3))-H Functionalization for C-N and C-O Bond Formation via Visible Light Photoredox Catalysis. J Org Chem 2016; 81:7161-71. [PMID: 27269307 DOI: 10.1021/acs.joc.6b00970] [Citation(s) in RCA: 71] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
A visible light mediated highly selective benzylic C-H bond functionalization for intermolecular C-N and C-O bond formation is reported. This cross-dehydrogenative coupling reaction demonstrates a straightforward protocol for incorporating the heteroaromatics to the benzylic position. Benzylic oxidation of various alkyl aryls to corresponding carbonyl compounds has also been reported.
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Affiliation(s)
- Ganesh Pandey
- Molecular Synthesis and Drug Discovery Laboratory, Centre of Biomedical Research, Sanjay Gandhi Postgraduate Institute of Medical Sciences , Lucknow 226014, India
| | - Ramkrishna Laha
- Molecular Synthesis and Drug Discovery Laboratory, Centre of Biomedical Research, Sanjay Gandhi Postgraduate Institute of Medical Sciences , Lucknow 226014, India
| | - Deepak Singh
- Molecular Synthesis and Drug Discovery Laboratory, Centre of Biomedical Research, Sanjay Gandhi Postgraduate Institute of Medical Sciences , Lucknow 226014, India
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48
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Zhang L, Wang Z, Guo P, Sun W, Li YM, Sun M, Hua C. Palladium-catalyzed ortho-acylation of N-Nitrosoanilines with α-oxocarboxylic acids: a convenient method to synthesize N-Nitroso ketones and indazoles. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.04.096] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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49
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Yu J, Moon HR, Min BK, Kim JN. 2-Arylindoles: A New Entry to Transition Metal-free Synthesis of 2-Aminobenzophenones. B KOREAN CHEM SOC 2016. [DOI: 10.1002/bkcs.10796] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Jin Yu
- Department of Chemistry and Institute of Basic Science; Chonnam National University; Gwangju 500-757 Korea
| | - Hye Ran Moon
- Department of Chemistry and Institute of Basic Science; Chonnam National University; Gwangju 500-757 Korea
| | - Beom Kyu Min
- Department of Chemistry and Institute of Basic Science; Chonnam National University; Gwangju 500-757 Korea
| | - Jae Nyoung Kim
- Department of Chemistry and Institute of Basic Science; Chonnam National University; Gwangju 500-757 Korea
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50
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Non-coordinating-Anion-Directed Reversal of Activation Site: Selective C−H Bond Activation ofN-Aryl Rings. Chemistry 2016; 22:8663-8. [DOI: 10.1002/chem.201600293] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2016] [Indexed: 11/07/2022]
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