1
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Zhang Z, Wei F, Wang X, Zhang Y. Pd(0)-Catalyzed Intermolecular Methylene C(sp 3)-H Silylation by Using N-Heterocyclic Carbene Ligands. Org Lett 2024; 26:3586-3590. [PMID: 38651729 DOI: 10.1021/acs.orglett.4c01044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/25/2024]
Abstract
The direct functionalization of methylene C(sp3)-H bonds is one of the greatest challenges in transition metal-catalyzed C-H activation. Although Pd(0)-catalyzed intramolecular cyclization reactions of methylene C(sp3)-H bonds have been reported, intermolecular functionalization remains to be discovered. Herein, we report the first example of a Pd(0)-catalyzed intermolecular methylene C(sp3)-H functionalization reaction. By use of a N-heterocyclic carbene ligand, the methylene C(sp3)-H bonds of 1-(benzyloxy)-2-iodobenzenes are activated and disilylated with hexamethyldisilane, affording disilylated products.
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Affiliation(s)
- Zhengyang Zhang
- School of Chemical Science and Engineering, Shanghai Key Laboratory of Chemical Assessment and Sustainability, Tongji University, Shanghai 200092, China
| | - Feng Wei
- School of Chemical Science and Engineering, Shanghai Key Laboratory of Chemical Assessment and Sustainability, Tongji University, Shanghai 200092, China
| | - Xuan Wang
- Department of Chemistry, College of Sciences, Shanghai University, 99 Shangda Road, Shanghai 200444, China
| | - Yanghui Zhang
- School of Chemical Science and Engineering, Shanghai Key Laboratory of Chemical Assessment and Sustainability, Tongji University, Shanghai 200092, China
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2
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Moghaddam FM, Jarahiyan A, Pazoki PY. β-Ketoallylic methylsulfones synthesis via inert C(sp 3)-H bond activation by magnetic Ag-Cu MOF. Sci Rep 2023; 13:22518. [PMID: 38110516 PMCID: PMC10728156 DOI: 10.1038/s41598-023-49670-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Accepted: 12/11/2023] [Indexed: 12/20/2023] Open
Abstract
Herein, the one-pot tandem synthesis of β-ketoallylic methylsulfones has been achieved from readily available dimethyl sulfoxide and acetophenones as coupling partners in one step. In this procedure, dimethyl sulfoxide serves as a triple role including solvent, dual synthon and as an oxidant agent. The use of magnetic Ag-Cu MOF as a bimetallic catalyst is the key to the progress of the reaction due to its accessible active sites. It provides facile access to various β-ketoallylic methylsulfone derivatives from direct C(sp3)-H bond activation and functionalization of aromatic methyl ketones especially acetophenones with electron-rich and electron-poor groups. Moreover, the present work offers a synthetically powerful strategy to form products in good to excellent yields (74-96%) with the atom, step, and pot economics. It has also delivered a new chromane-4-one derivative from 2-hydroxy acetophenone with intramolecular Michael-addition of related β-ketoallyl methylsulfone product. In the final step, the electronic properties of some products have been predicted with the theoretical studies.
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Affiliation(s)
- Firouz Matloubi Moghaddam
- Laboratory of Organic Synthesis and Natural Products, Department of Chemistry, Sharif University of Technology, Azadi Street, PO Box 111559516, Tehran, Iran.
| | - Atefeh Jarahiyan
- Laboratory of Organic Synthesis and Natural Products, Department of Chemistry, Sharif University of Technology, Azadi Street, PO Box 111559516, Tehran, Iran
| | - Parisa Yaqubnezhad Pazoki
- Laboratory of Organic Synthesis and Natural Products, Department of Chemistry, Sharif University of Technology, Azadi Street, PO Box 111559516, Tehran, Iran
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3
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Ortiz-Hernández M, Salazar-Pereda V, Mendoza-Espinosa D, Gomez-Bonilla MA, Cristobal C, Ortega-Alfaro MC, Suárez A, Sandoval-Chavez CI. CH bond activation in aromatic ketones mediated by iridium-tris(pyrazolyl)borate complexes. Dalton Trans 2023. [PMID: 37997796 DOI: 10.1039/d3dt02849f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2023]
Abstract
Reaction of complex [TpMe2Ir(η4-CH2C(Me)C(Me)C2)] (1) with a series of aromatic ketones at 130 °C renders, by means of a selective ortho-CH activation, Ir(III)-metallacycles 2-5, which display an Ir-H bond. When [TpMe2Ir(C6H5)2N2] (6) is treated with 2-(trifluoromethyl)acetophenone and 2-fluoroacetophenone at 80 °C, the formation of dimeric (7) and trimeric architectures (8) is achieved through the meta- and para-CH activation of the aromatic ketone, respectively. The generation of complexes 2-5 is proposed to occur by the initial formation of Ir(III) η1-ketone adducts as key intermediates, followed by aromatic CH activations and the release of a butadiene ligand. The formation of complexes 7 and 8 involves an assisted process in which a metal center activation of the less sterically hindered C-H bond of the aromatic ketone takes place (releasing a benzene molecule), followed by the coordination of the carbonyl group, which generates the respective dimeric and trimeric structures. Complexes 7 and 8 are efficient catalysts for the transfer hydrogenation of ketones and aldehydes using isopropanol as the hydrogen source. All complexes have been fully characterized by NMR spectroscopy, FT-IR, elemental analysis and, in the cases of 7 and 8, X-ray crystallography. Details of the reaction conditions, isolation of the products, and proposals for the pathways of formation of complexes 2-5 and 7-8 are discussed.
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Affiliation(s)
- M Ortiz-Hernández
- Área Académica de Química, Universidad Autónoma del Estado de Hidalgo, Carretera Pachuca-Tulancingo Km. 4.5, Mineral de la Reforma, Hidalgo, 42090, Mexico.
| | - V Salazar-Pereda
- Área Académica de Química, Universidad Autónoma del Estado de Hidalgo, Carretera Pachuca-Tulancingo Km. 4.5, Mineral de la Reforma, Hidalgo, 42090, Mexico.
| | - D Mendoza-Espinosa
- Área Académica de Química, Universidad Autónoma del Estado de Hidalgo, Carretera Pachuca-Tulancingo Km. 4.5, Mineral de la Reforma, Hidalgo, 42090, Mexico.
| | - M A Gomez-Bonilla
- Área Académica de Química, Universidad Autónoma del Estado de Hidalgo, Carretera Pachuca-Tulancingo Km. 4.5, Mineral de la Reforma, Hidalgo, 42090, Mexico.
| | - C Cristobal
- Departamento de Química, División de Ciencias Naturales y Exactas, Universidad de Guanajuato, Campus Noria Alta, Guanajuato, 36050, Mexico
| | - M C Ortega-Alfaro
- Instituto de Ciencias Nucleares, Universidad Nacional Autónoma de México, Circuito Exterior, Cuidad Universitaria, Alcaldía Coyoacán, 04510, Mexico
| | - A Suárez
- Instituto de Investigaciones Químicas, Departamento de Química Inorgánica, CSIC-Universidad de Sevilla, Avda. Américo Vespucio 49, 41092, Sevilla, Spain
| | - C I Sandoval-Chavez
- Instituto de Ciencias Nucleares, Universidad Nacional Autónoma de México, Circuito Exterior, Cuidad Universitaria, Alcaldía Coyoacán, 04510, Mexico
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4
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Sinha SK, Ghosh P, Jain S, Maiti S, Al-Thabati SA, Alshehri AA, Mokhtar M, Maiti D. Transition-metal catalyzed C-H activation as a means of synthesizing complex natural products. Chem Soc Rev 2023; 52:7461-7503. [PMID: 37811747 DOI: 10.1039/d3cs00282a] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/10/2023]
Abstract
Over the past few decades, the advent of C-H activation has led to a rethink among chemists about the synthetic strategies employed for multi-step transformations. Indeed, deploying innovative and masterful tricks against the numerous classical organic transformations has been the need of the hour. Despite this, the immense importance of C-H activation remains unfulfilled unless the methodology can be deployed for large-scale industrial processes and towards the concise, step-economic synthesis of prodigious natural products and pharmaceutical drugs. Lately, the growing potential of C-H activation methodology has indeed driven the pioneers of synthetic organic chemists into finding more efficient methods to accelerate the synthesis of such complex molecular scaffolds. This review aims to draw a general overview of the various C-H activation procedures that have been adopted for synthesizing these vast majority of structurally complicated natural products. Our objective lies in drawing a complete picture and taking the readers through the synthesis of a series of such complex organic compounds by simplified techniques, making it step-economic on a larger scale and thus instigating the readers to trigger the use of such methodology and uncover new, unique patterns for future synthesis of such natural products.
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Affiliation(s)
- Soumya Kumar Sinha
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai-400076, India.
| | - Pintu Ghosh
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai-400076, India.
| | - Shubhanshu Jain
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai-400076, India.
| | - Siddhartha Maiti
- School of Biosciences, Engineering and Technology, VIT Bhopal University, Kothrikalan, Sehore, Madhya Pradesh - 466114, India
| | - Shaeel A Al-Thabati
- Department of Chemistry, Faculty of Science, King Abdulaziz University, P.O. Box 80203, Jeddah, 21589, Saudi Arabia
| | - Abdulmohsen Ali Alshehri
- Department of Chemistry, Faculty of Science, King Abdulaziz University, P.O. Box 80203, Jeddah, 21589, Saudi Arabia
| | - Mohamed Mokhtar
- Department of Chemistry, Faculty of Science, King Abdulaziz University, P.O. Box 80203, Jeddah, 21589, Saudi Arabia
| | - Debabrata Maiti
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai-400076, India.
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5
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Yue WJ, Martin R. α-Difluoroalkylation of Benzyl Amines with Trifluoromethylarenes. Angew Chem Int Ed Engl 2023; 62:e202310304. [PMID: 37596243 DOI: 10.1002/anie.202310304] [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: 07/19/2023] [Revised: 08/17/2023] [Accepted: 08/18/2023] [Indexed: 08/20/2023]
Abstract
An α-difluoroalkylation of benzyl amines with trifluoromethylarenes is disclosed herein. This protocol is characterized by its operational simplicity, excellent chemoselectivity and broad scope-even with advanced synthetic intermediates-, thus offering a new entry point to medicinally-relevant α-difluoroalkylated amines from simple, yet readily accessible, precursors.
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Affiliation(s)
- Wen-Jun Yue
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007, Tarragona, Spain
- Universitat Rovira i Virgili, Departament de Química Analítica i Química Orgànica, c/Marcel⋅lí Domingo, 1, 43007, Tarragona, Spain
| | - Ruben Martin
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007, Tarragona, Spain
- Catalan Institution for Research and Advanced Studies (ICREA), Passeig Lluïs Companys, 23, 08010, Barcelona, Spain
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6
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Dutta A, Jeganmohan M. Palladium-Catalyzed Aerobic Oxidative Spirocyclization of Alkyl Amides with Maleimides via β-C(sp 3)-H Activation. Org Lett 2023; 25:6305-6310. [PMID: 37606577 DOI: 10.1021/acs.orglett.3c02182] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/23/2023]
Abstract
An efficient method for the synthesis of bicyclic spirodiamine molecules via β-C(sp3)-H bond activation of aliphatic amides, followed by cyclization with maleimides, has been developed. The reaction proceeds through an amide-directed β-C(sp3)-H bond activation of alkyl amides and subsequent cyclization with maleimides. The methodology is highly compatible with a wide variety of maleimides. Amides derived from biologically active aliphatic and fatty acids were also found to be highly compatible with the protocol. A palladacycle was synthesized and found to be the active intermediate in this reaction. A plausible reaction mechanism was also proposed to account for this spirocyclization.
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Affiliation(s)
- Ananya Dutta
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, Tamil Nadu, India
| | - Masilamani Jeganmohan
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, Tamil Nadu, India
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7
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Shukla RK, Nair AM, Volla CMR. Pd(ii)-catalyzed β- and γ-C-(sp 3)-H dienylation with allenyl acetates. Chem Sci 2023; 14:955-962. [PMID: 36755729 PMCID: PMC9890605 DOI: 10.1039/d2sc05188e] [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: 09/18/2022] [Accepted: 12/19/2022] [Indexed: 12/24/2022] Open
Abstract
Recent years have seen the emergence of transition metal catalyzed C-H activation as a powerful synthetic tool in organic chemistry. Allenes have fascinated synthetic chemists due to their unique reactivity. While directing group assisted functionalization of C(sp2)-H bonds with allenes is well documented in the literature, their coupling with more challenging aliphatic C(sp3)-H bonds remains elusive. In this regard, we hereby report a Pd(ii) catalyzed 8-aminoquinoline directed aliphatic C(sp3)-H dienylation protocol using allenyl acetates. A variety of carboxylic acids including fatty acids and amino acids were efficiently functionalized at β and γ-positions to afford diversely functionalized 1,3-dienes. Preliminary mechanistic studies revealed the crucial role of the base in the success of the transformation. The reaction proceeds via regioselective 2,3-migratory insertion of the allene with the alkylpalladium(ii) species followed by β-acetoxy elimination.
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Affiliation(s)
- Rahul K. Shukla
- Department of Chemistry, Indian Institute of Technology BombayPowaiMumbai 400076India
| | - Akshay M. Nair
- Department of Chemistry, Indian Institute of Technology BombayPowaiMumbai 400076India
| | - Chandra M. R. Volla
- Department of Chemistry, Indian Institute of Technology BombayPowaiMumbai 400076India
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8
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Monsigny L, Doche F, Besset T. Transition-metal-catalyzed C-H bond activation as a sustainable strategy for the synthesis of fluorinated molecules: an overview. Beilstein J Org Chem 2023; 19:448-473. [PMID: 37123090 PMCID: PMC10130906 DOI: 10.3762/bjoc.19.35] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2023] [Accepted: 03/24/2023] [Indexed: 05/02/2023] Open
Abstract
The last decade has witnessed the emergence of innovative synthetic tools for the synthesis of fluorinated molecules. Among these approaches, the transition-metal-catalyzed functionalization of various scaffolds with a panel of fluorinated groups (XRF, X = S, Se, O) offered straightforward access to high value-added compounds. This review will highlight the main advances made in the field with the transition-metal-catalyzed functionalization of C(sp2) and C(sp3) centers with SCF3, SeCF3, or OCH2CF3 groups among others, by C-H bond activation. The scope and limitations of these transformations are discussed in this review.
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Affiliation(s)
- Louis Monsigny
- Normandie University, INSA Rouen, UNIROUEN, CNRS, COBRA (UMR 6014), 76000 Rouen, France
| | - Floriane Doche
- Normandie University, INSA Rouen, UNIROUEN, CNRS, COBRA (UMR 6014), 76000 Rouen, France
| | - Tatiana Besset
- Normandie University, INSA Rouen, UNIROUEN, CNRS, COBRA (UMR 6014), 76000 Rouen, France
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9
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Doche F, Escudero J, Petit‐Cancelier F, Xiong H, Couve‐Bonnaire S, Audisio D, Poisson T, Besset T. Directed Palladium Catalyzed C-H (Ethoxycarbonyl)difluoromethylthiolation Reactions. Chemistry 2022; 28:e202202099. [PMID: 35904010 PMCID: PMC9826264 DOI: 10.1002/chem.202202099] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2022] [Indexed: 01/11/2023]
Abstract
The unprecedented Pd-catalyzed (ethoxycarbonyl)difluoromethylthiolation reaction of various unsaturated derivatives was studied. In the presence of the (ethoxycarbonyl)difluoromethylsulfenamide reagent I and under mild reaction conditions (60 °C), both 2-(hetero)aryl and 2-(α-aryl-vinyl)pyridine derivatives were smoothly functionalized with this methodology (37 examples, up to 87 % yield). Moreover, the synthetic interest of this fluorinated moiety was further showcased by its conversion into various original fluorinated residues. Finally, a plausible mechanism for this transformation was suggested.
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Affiliation(s)
- Floriane Doche
- Normandie Univ.INSA RouenUNIROUENCNRSCOBRA (UMR 6014)76000RouenFrance).
| | - Julien Escudero
- Normandie Univ.INSA RouenUNIROUENCNRSCOBRA (UMR 6014)76000RouenFrance).
| | | | - Heng‐Ying Xiong
- Normandie Univ.INSA RouenUNIROUENCNRSCOBRA (UMR 6014)76000RouenFrance).
| | | | - Davide Audisio
- CEADépartement Médicaments et Technologies pour la SantéSCBMUniversité Paris Saclay91191Gif-sur-YvetteFrance
| | - Thomas Poisson
- Normandie Univ.INSA RouenUNIROUENCNRSCOBRA (UMR 6014)76000RouenFrance).,Institut Universitaire de France1 rue Descartes75231ParisFrance
| | - Tatiana Besset
- Normandie Univ.INSA RouenUNIROUENCNRSCOBRA (UMR 6014)76000RouenFrance).
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10
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Vuagnat M, Tognetti V, Jubault P, Besset T. Ru(II)-Catalyzed Hydroarylation of in situ Generated 3,3,3-Trifluoro-1-propyne by C-H Bond Activation: A Facile and Practical Access to β-Trifluoromethylstyrenes. Chemistry 2022; 28:e202201928. [PMID: 35736795 PMCID: PMC9804422 DOI: 10.1002/chem.202201928] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Indexed: 01/05/2023]
Abstract
In this study, a practical and straightforward synthesis of β-(E)-trifluoromethylstyrenes by ruthenium-catalyzed C-H bond activation was developed. The readily available and inexpensive 2-bromo-3,3,3-trifluoropropene (BTP), a non-ozone depleting reagent, was used as a reservoir of 3,3,3-trifluoropropyne. With this approach, the monofunctionalization of a panel of heteroarenes was possible in a safe and scalable manner (23 examples, up to 87 % yield). Mechanistic investigations and density functional theory (DFT) calculations were also conducted to get a better understanding of the mechanism of this transformation. These studies suggested that 1) a cyclometallated ruthenium complex enabled the transformation, 2) this complex exhibited high efficiency in this transformation compared to the commercially available [RuCl2 (p-cymene)]2 and 3) the mechanism proceeded through a bis-cyclometallated ruthenium intermediate for the carboruthenation step.
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Affiliation(s)
- Martin Vuagnat
- Normandie UnivINSA RouenUNIROUENCNRSCOBRA (UMR 6014)76000RouenFrance
| | - Vincent Tognetti
- Normandie UnivINSA RouenUNIROUENCNRSCOBRA (UMR 6014)76000RouenFrance
| | - Philippe Jubault
- Normandie UnivINSA RouenUNIROUENCNRSCOBRA (UMR 6014)76000RouenFrance
| | - Tatiana Besset
- Normandie UnivINSA RouenUNIROUENCNRSCOBRA (UMR 6014)76000RouenFrance
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11
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Li QZ, Hou SH, Kang JC, Lian PF, Hao Y, Chen C, Zhou J, Ding TM, Zhang SY. Bioinspired Palladium-Catalyzed Intramolecular C(sp 3 )-H Activation for the Collective Synthesis of Proline Natural Products. Angew Chem Int Ed Engl 2022; 61:e202207088. [PMID: 35751877 DOI: 10.1002/anie.202207088] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Indexed: 12/18/2022]
Abstract
Bioinspired palladium-catalyzed intramolecular cyclization of amino acid derivatives containing a vinyl iodide moiety by C-H activation enabled rapid access to a wide range of functionalized proline derivatives with an exocyclic olefin. To demonstrate the practicality of this methodology, the functionalized prolines were used as intermediates for the synthesis of several natural products: lucentamycin A, oxotomaymycin, oxoprothracarcin, and barmumycin.
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Affiliation(s)
- Quan-Zhe Li
- Shanghai Key Laboratory for Molecular Engineer of Chiral Drugs, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China.,School of Pharmaceutical Sciences, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
| | - Si-Hua Hou
- Shanghai Key Laboratory for Molecular Engineer of Chiral Drugs, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China.,School of Pharmaceutical Sciences, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
| | - Jun-Chen Kang
- Shanghai Key Laboratory for Molecular Engineer of Chiral Drugs, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
| | - Peng-Fei Lian
- Shanghai Key Laboratory for Molecular Engineer of Chiral Drugs, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
| | - Yu Hao
- Shanghai Key Laboratory for Molecular Engineer of Chiral Drugs, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
| | - Chao Chen
- Shanghai Key Laboratory for Molecular Engineer of Chiral Drugs, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
| | - Jia Zhou
- Shanghai Key Laboratory for Molecular Engineer of Chiral Drugs, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
| | - Tong-Mei Ding
- Shanghai Key Laboratory for Molecular Engineer of Chiral Drugs, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
| | - Shu-Yu Zhang
- Shanghai Key Laboratory for Molecular Engineer of Chiral Drugs, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
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12
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Aggarwal Y, Padmavathi R, Singh P, Arulananda Babu S. Pd(II)‐Catalyzed, γ‐C(sp2)‐H Alkoxylation in α‐Methylbenzylamine, Phenylglycinol, 3‐Amino‐3‐Phenylpropanol Toward Enantiopure Aryl Alkyl Ethers. ASIAN J ORG CHEM 2022. [DOI: 10.1002/ajoc.202200327] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Yashika Aggarwal
- Indian Institute of Science Education and Research Mohali Chemical Sciences INDIA
| | | | - Prabhakar Singh
- Indian Institute of Science Education and Research Mohali Chemical Sciences INDIA
| | - Srinivasarao Arulananda Babu
- Indian Institute of Science Education and Research Mohali Department of Chemical Sciences Knowledge City, Sector 81, SAS Nagar,Mohali, Manauli P.O., 140306 Mohali INDIA
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13
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Hansen T, Sun X, Dalla Tiezza M, van Zeist W, van Stralen JNP, Geerke DP, Wolters LP, Poater J, Hamlin TA, Bickelhaupt FM. C−X Bond Activation by Palladium: Steric Shielding versus Steric Attraction. Chemistry 2022; 28:e202201093. [PMID: 35420229 PMCID: PMC9401605 DOI: 10.1002/chem.202201093] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2022] [Indexed: 11/07/2022]
Abstract
The C−X bond activation (X = H, C) of a series of substituted C(n°)−H and C(n°)−C(m°) bonds with C(n°) and C(m°) = H3C− (methyl, 0°), CH3H2C− (primary, 1°), (CH3)2HC− (secondary, 2°), (CH3)3C− (tertiary, 3°) by palladium were investigated using relativistic dispersion‐corrected density functional theory at ZORA‐BLYP‐D3(BJ)/TZ2P. The effect of the stepwise introduction of substituents was pinpointed at the C−X bond on the bond activation process. The C(n°)−X bonds become substantially weaker going from C(0°)−X, to C(1°)−X, to C(2°)−X, to C(3°)−X because of the increasing steric repulsion between the C(n°)‐ and X‐group. Interestingly, this often does not lead to a lower barrier for the C(n°)−X bond activation. The C−H activation barrier, for example, decreases from C(0°)−X, to C(1°)−X, to C(2°)−X and then increases again for the very crowded C(3°)−X bond. For the more congested C−C bond, in contrast, the activation barrier always increases as the degree of substitution is increased. Our activation strain and matching energy decomposition analyses reveal that these differences in C−H and C−C bond activation can be traced back to the opposing interplay between steric repulsion across the C−X bond versus that between the catalyst and substrate.
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Affiliation(s)
- Thomas Hansen
- Department of Theoretical Chemistry Amsterdam Institute of Molecular and Life Sciences (AIMMS) Amsterdam Center for Multiscale Modeling (ACMM) Vrije Universiteit Amsterdam De Boelelaan 1083 1081 HV Amsterdam The Netherlands
- Leiden Institute of Chemistry Leiden University Einsteinweg 55 2333 CC Leiden The Netherlands
- Departament de Química Inorgànicai i Orgànica & IQTCUB Universitat de Barcelona Martí i Franquès 1-11 08028 Barcelona Spain
| | - Xiaobo Sun
- Department of Theoretical Chemistry Amsterdam Institute of Molecular and Life Sciences (AIMMS) Amsterdam Center for Multiscale Modeling (ACMM) Vrije Universiteit Amsterdam De Boelelaan 1083 1081 HV Amsterdam The Netherlands
- Departament de Química Inorgànicai i Orgànica & IQTCUB Universitat de Barcelona Martí i Franquès 1-11 08028 Barcelona Spain
| | - Marco Dalla Tiezza
- Department of Theoretical Chemistry Amsterdam Institute of Molecular and Life Sciences (AIMMS) Amsterdam Center for Multiscale Modeling (ACMM) Vrije Universiteit Amsterdam De Boelelaan 1083 1081 HV Amsterdam The Netherlands
| | - Willem‐Jan van Zeist
- Department of Theoretical Chemistry Amsterdam Institute of Molecular and Life Sciences (AIMMS) Amsterdam Center for Multiscale Modeling (ACMM) Vrije Universiteit Amsterdam De Boelelaan 1083 1081 HV Amsterdam The Netherlands
| | - Joost N. P. van Stralen
- Department of Theoretical Chemistry Amsterdam Institute of Molecular and Life Sciences (AIMMS) Amsterdam Center for Multiscale Modeling (ACMM) Vrije Universiteit Amsterdam De Boelelaan 1083 1081 HV Amsterdam The Netherlands
| | - Daan P. Geerke
- Department of Theoretical Chemistry Amsterdam Institute of Molecular and Life Sciences (AIMMS) Amsterdam Center for Multiscale Modeling (ACMM) Vrije Universiteit Amsterdam De Boelelaan 1083 1081 HV Amsterdam The Netherlands
| | - Lando P. Wolters
- Department of Theoretical Chemistry Amsterdam Institute of Molecular and Life Sciences (AIMMS) Amsterdam Center for Multiscale Modeling (ACMM) Vrije Universiteit Amsterdam De Boelelaan 1083 1081 HV Amsterdam The Netherlands
| | - Jordi Poater
- Departament de Química Inorgànicai i Orgànica & IQTCUB Universitat de Barcelona Martí i Franquès 1-11 08028 Barcelona Spain
- ICREA Passeig Lluís Companys 23 08010 Barcelona Spain
| | - Trevor A. Hamlin
- Department of Theoretical Chemistry Amsterdam Institute of Molecular and Life Sciences (AIMMS) Amsterdam Center for Multiscale Modeling (ACMM) Vrije Universiteit Amsterdam De Boelelaan 1083 1081 HV Amsterdam The Netherlands
| | - F. Matthias Bickelhaupt
- Department of Theoretical Chemistry Amsterdam Institute of Molecular and Life Sciences (AIMMS) Amsterdam Center for Multiscale Modeling (ACMM) Vrije Universiteit Amsterdam De Boelelaan 1083 1081 HV Amsterdam The Netherlands
- Institute for Molecules and Materials (IMM) Radboud University Heyendaalseweg 135 6525 AJ Nijmegen The Netherlands
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14
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Gangadhar M, Ramesh V, Prasad VS, Adiyala PR. Silver Ions Promoted Palladium-Catalyzed Inactive β-C(sp 3)-H Bond Arylation in Batch and Continuous-Flow Conditions. J Org Chem 2022; 87:9607-9618. [PMID: 35833382 DOI: 10.1021/acs.joc.2c00606] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A palladium(II)-catalyzed protocol for inactive β-C(sp3)-H bond functionalization has been first accomplished. The reaction proceeds through five-membered carbocycles for the formation of C-C bonds via the Pd(II)/Pd(IV) cycle. This reaction was carried out with various aryl iodides and benzothiazoles/benzoxazoles/benzimidazoles, which were well-tolerated in this reaction and successfully generated β-C(sp3)-H arylated products. Further implementation of this batch protocol to continuous flow by utilizing a PTFE (polytetrafluoroethylene) capillary reactor enhanced the reaction efficiency and decreased the reaction time (18.4 min) as compared to batch conditions (8 h). Even on the gram scale, the process produced excellent yield with negligible diarylations. Functional group tolerance, a continuous-flow approach, and easy-to-handle reaction conditions make this inactive β-C(sp3)-H bond functionalization protocol very attractive.
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Affiliation(s)
- Maram Gangadhar
- Department of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, Telangana, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Vankudoth Ramesh
- Department of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, Telangana, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Vadla Shiva Prasad
- Department of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, Telangana, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Praveen Reddy Adiyala
- Department of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, Telangana, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
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15
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Tomar R, Kumar A, Dalal A, Bhattacharya D, Singh P, Arulananda Babu S. Expanding the utility of inexpensive pyridine‐N‐oxide directing group for the site‐selective sp2/sp3γ‐C‐H and sp2δ‐C‐H functionalization of carboxamides. ASIAN J ORG CHEM 2022. [DOI: 10.1002/ajoc.202200311] [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)
- Radha Tomar
- Indian Institute of Science Education and Research Mohali Chemical Sciences INDIA
| | - Amit Kumar
- Indian Institute of Science Education and Research Mohali Chemical Sciences INDIA
| | - Arup Dalal
- Indian Institute of Science Education and Research Mohali Chemical Sciences INDIA
| | | | - Prabhakar Singh
- Indian Institute of Science Education and Research Mohali Chemical Sciences INDIA
| | - Srinivasarao Arulananda Babu
- Indian Institute of Science Education and Research Mohali Department of Chemical Sciences Knowledge City, Sector 81, SAS Nagar,Mohali, Manauli P.O., 140306 Mohali INDIA
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16
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Li QZ, Hou SH, Kang JC, Lian PF, Hao Y, Chen C, Zhou J, Ding TM, Zhang SY. Bioinspired Palladium‐Catalyzed Intramolecular C(sp3)−H Activation for the Collective Synthesis of Proline Natural Products. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202207088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Quan-Zhe Li
- Shanghai Jiao Tong University Chemistry CHINA
| | - Si-Hua Hou
- SJTU: Shanghai Jiao Tong University CHEMISTRY CHINA
| | | | | | - Yu Hao
- SJTU: Shanghai Jiao Tong University Chemistry CHINA
| | - Chao Chen
- SJTU: Shanghai Jiao Tong University Chemistry CHINA
| | - Jia Zhou
- SJTU: Shanghai Jiao Tong University Chemistry CHINA
| | | | - Shu-Yu Zhang
- Shanghai Jiao Tong University School of Chemistry and Chemical Engineering 800 Dongchuan RoadB329 Chemsitry BuildingShanghai Jiao Tong University 200240 Shanghai CHINA
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17
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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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18
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Kaur R, Banga S, Babu SA. Construction of carbazole-based unnatural amino acid scaffolds via Pd(II)-catalyzed C(sp 3)-H functionalization. Org Biomol Chem 2022; 20:4391-4414. [PMID: 35583129 DOI: 10.1039/d2ob00658h] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
We report the synthesis of carbazole-based unnatural α-amino acid and non-α-amino acid derivatives via a Pd(II)-catalyzed bidentate directing group 8-aminoquinoline-aided β-C(sp3)-H activation/functionalization method. Various N-phthaloyl, DL-, L- and D-carboxamides derived from their corresponding α-amino acids, non-α-amino acids and aliphatic carboxamides were subjected to the β-C(sp3)-H functionalization with 3-iodocarbazoles in the presence of a Pd(II) catalyst to afford the corresponding carbazole moiety installed unnatural amino acid derivatives and aliphatic carboxamides. Carbazole motif-containing racemic (DL) and enantiopure (L and D) amino acid derivatives including phenylalanine, norvaline, leucine, norleucine and 2-aminooctanoic acid with anti-stereochemistry and various non-α-amino acid derivatives including GABA have been synthesized. Removal of the 8-aminoquinoline directing group, deprotection of the phthalimide moiety and the preparation of carbazole amino acid derivatives containing free amino- and carboxylate groups are shown. The carbazole motif is prevalent in alkaloids and biologically active molecules and functional materials. Thus, this work on the synthesis of carbazole-based unnatural amino acid derivatives would enrich the libraries of unnatural amino acid derivatives and carbazoles.
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Affiliation(s)
- Ramandeep Kaur
- 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.
| | - Shefali Banga
- 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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C−H Methylation Using Sustainable Approaches. Catalysts 2022. [DOI: 10.3390/catal12050510] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
C−H methylation of sp2 and sp3 carbon centers is significant in many biological processes. Methylated drug candidates show unique properties due to the change in solubility, conformation and metabolic activities. Several photo-catalyzed, electrochemical, mechanochemical and metal-free techniques that are widely utilized strategies in medicinal chemistry for methylation of arenes and heteroarenes have been covered in this review.
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20
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Barboza AA, Dantas JA, Jardim GADM, Ferreira MAB, Costa MO, Chiavegatti A. Recent Advances in Palladium-Catalyzed Oxidative Couplings in the Synthesis/Functionalization of Cyclic Scaffolds Using Molecular Oxygen as the Sole Oxidant. SYNTHESIS-STUTTGART 2022. [DOI: 10.1055/a-1701-7397] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
AbstractOver the past years, Pd(II)-catalyzed oxidative couplings have enabled the construction of molecular scaffolds with high structural diversity via C–C, C–N and C–O bond-forming reactions. In contrast to the use of stoichiometric amounts of more common oxidants, such as metal salts (Cu and Ag) and benzoquinone derivatives, the use of molecular oxygen for the direct or indirect regeneration of Pd(II) species presents itself as a more viable alternative in terms of economy and sustainability. In this review, we describe recent advances on the development of Pd-catalyzed oxidative cyclizations/functionalizations, where molecular oxygen plays a pivotal role as the sole stoichiometric oxidant.1 Introduction2 Oxidative C–C and C–Nu Coupling2.1 Intramolecular Oxidative C–Nu Heterocyclization Reactions2.1.1 C–H Activation2.1.2 Wacker/Aza-Wacker-Type Cyclization2.1.3 Tandem Wacker/Aza-Wacker and Cyclization/Cross-Coupling Reactions2.2 Intermolecular Oxidative C–Nu Heterocoupling Reactions2.3 Intramolecular Oxidative (C–C) Carbocyclization Reactions2.4 Intermolecular Oxidative C–C Coupling Reactions2.4.1 Cyclization Reactions2.4.2 Cross-Coupling Reactions2.4.3 Homo-Coupling Reactions3 Aerobic Dehydrogenative Coupling/Functionalization4 Oxidative C–H Functionalization5 Summary
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22
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Grover J, Prakash G, Goswami N, Maiti D. Traditional and sustainable approaches for the construction of C–C bonds by harnessing C–H arylation. Nat Commun 2022; 13:1085. [PMID: 35228555 PMCID: PMC8885660 DOI: 10.1038/s41467-022-28707-9] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Accepted: 01/27/2022] [Indexed: 12/18/2022] Open
Abstract
Biaryl scaffolds are found in natural products and drug molecules and exhibit a wide range of biological activities. In past decade, the transition metal-catalyzed C–H arylation reaction came out as an effective tool for the construction of biaryl motifs. However, traditional transition metal-catalyzed C–H arylation reactions have limitations like harsh reaction conditions, narrow substrate scope, use of additives etc. and therefore encouraged synthetic chemists to look for alternate greener approaches. This review aims to draw a general overview on C–H bond arylation reactions for the formation of C–C bonds with the aid of different methodologies, majorly highlighting on greener and sustainable approaches. Transition-metal-catalyzed C–H arylations are an effective tool for the construction of biaryl motifs in an efficient and selective manner. Here the authors provide an overview of the state-of-the-art of the field and perspectives on emerging directions toward increased sustainability.
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23
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Babu SA, Aggarwal Y, Patel P, Tomar R. Diastereoselective palladium-catalyzed functionalization of prochiral C(sp 3)-H bonds of aliphatic and alicyclic compounds. Chem Commun (Camb) 2022; 58:2612-2633. [PMID: 35113087 DOI: 10.1039/d1cc05649b] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
We highlight the reported developments of the palladium-catalyzed C-H activation and functionalization of the inactive/unreactive prochiral C(sp3)-H bonds of aliphatic and alicyclic compounds. There exist numerous classical methods for generating contiguous stereogenic centers in a compound with a high degree of stereocontrol. Along similar lines, the Pd(II)-catalyzed, directing group-aided functionalization of inactive prochiral/diastereotopic C(sp3)-H bonds have been exploited to accomplish the stereoselective construction of stereo-arrays in organic compounds. We present a concise discussion on how specific strategies consisting of Pd(II)-catalyzed, directing group-aided C(sp3)-H functionalization have been utilized to generate two or more stereogenic centers in aliphatic and alicyclic compounds.
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Affiliation(s)
- Srinivasarao Arulananda Babu
- Department of Chemical Sciences, Indian Institute of Science Education and Research, Mohali, Knowledge City, Sector 81, SAS Nagar, Mohali, Manauli P.O., Punjab, 140306, India.
| | - Yashika Aggarwal
- Department of Chemical Sciences, Indian Institute of Science Education and Research, Mohali, Knowledge City, Sector 81, SAS Nagar, Mohali, Manauli P.O., Punjab, 140306, India.
| | - Pooja Patel
- Department of Chemical Sciences, Indian Institute of Science Education and Research, Mohali, Knowledge City, Sector 81, SAS Nagar, Mohali, Manauli P.O., Punjab, 140306, India.
| | - Radha Tomar
- Department of Chemical Sciences, Indian Institute of Science Education and Research, Mohali, Knowledge City, Sector 81, SAS Nagar, Mohali, Manauli P.O., Punjab, 140306, India.
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24
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Ma J, Zhou X, Guo P, Cheng H, Ji H. Copper‐Mediated
and Catalyzed
C‐H
Bond Amination via
Chelation‐Assistance
: Scope, Mechanism and Synthetic Applications. CHINESE J CHEM 2022. [DOI: 10.1002/cjoc.202100812] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Jiao‐Li Ma
- College of Chemistry, Guangdong University of Petrochemical Technology Maoming 525000 PR China
| | - Xu‐Ming Zhou
- College of Chemistry, Guangdong University of Petrochemical Technology Maoming 525000 PR China
| | - Peng‐Hu Guo
- College of Chemistry, Guangdong University of Petrochemical Technology Maoming 525000 PR China
| | - Hui‐Cheng Cheng
- College of Chemistry, Guangdong University of Petrochemical Technology Maoming 525000 PR China
| | - Hong‐bing Ji
- College of Chemistry, Guangdong University of Petrochemical Technology Maoming 525000 PR China
- Fine Chemical Industry Research Institute, School of Chemistry, Sun Yat‐sen University Guangzhou 510275 PR China
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25
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Tamilthendral V, Balamurugan G, Ramesh R, Malecki JG. Ru(II)–NNO pincer‐type complexes catalysed E‐olefination of alkyl‐substituted quinolines/pyrazines utilizing primary alcohols. Appl Organomet Chem 2022. [DOI: 10.1002/aoc.6561] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Veerappan Tamilthendral
- Centre for Organometallic Chemistry, School of Chemistry Bharathidasan University Tiruchirappalli Tamil Nadu India
| | - Gunasekaran Balamurugan
- Centre for Organometallic Chemistry, School of Chemistry Bharathidasan University Tiruchirappalli Tamil Nadu India
| | - Rengan Ramesh
- Centre for Organometallic Chemistry, School of Chemistry Bharathidasan University Tiruchirappalli Tamil Nadu India
| | - Jan Grzegorz Malecki
- Department of Crystallography, Institute of Chemistry University of Silesia Katowice Poland
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26
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Ma J, Zhou X, Chen JL, Shi J, Cheng HC, Guo P, Ji H. Directing Group Strategies in Rhodium-Catalyzed C-H Amination. Org Biomol Chem 2022; 20:7554-7576. [DOI: 10.1039/d2ob01157c] [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
Construction of a carbon-nitrogen bond is one of the most prevalent operations in nature and organic synthesis. The resulting amino compounds are privileged structural fragments in natural products, pharmaceutical drugs,...
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27
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28
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Cheng Y, Hu R, Chen X, Yang H, Niu X, Yang L. Recent Progress in Direct Catalytic C(sp 3)—H Silylation Reactions. CHINESE J ORG CHEM 2022. [DOI: 10.6023/cjoc202109017] [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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29
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Talukdar K, Shah TA, Sarkar T, Roy S, Maharana PK, Punniyamurthy T. Pd-catalyzed bidentate auxiliary assisted remote C(sp 3)-H functionalization. Chem Commun (Camb) 2021; 57:13221-13233. [PMID: 34816830 DOI: 10.1039/d1cc05291h] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Pd-catalyzed C-H functionalisation affords effective synthetic tools to construct C-C and C-X bonds. Despite the challenges, the distal functionalization of C(sp3)-H bonds has witnessed significant developments and the use of bidentate auxiliaries has garnished this area by providing an opportunity to control reactivity as well as selectivity beyond proximal sites. This article covers the recent developments on the Pd-catalyzed bidentate auxiliary-assisted distal C(sp3)-H functionalization and is categorized based on the nature of functionalizations.
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Affiliation(s)
- Kangkan Talukdar
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, India.
| | - Tariq A Shah
- Department of Chemistry, University of Kashmir, Srinagar-190006, India
| | - Tanumay Sarkar
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, India.
| | - Subhasish Roy
- Department of Chemistry, School of Fundamental and Applied Sciences, Assam Don Bosco University, Kamarkuchi, Sonapur-782402, India
| | - Prabhat Kumar Maharana
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, India.
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30
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Liao Y, Liu F, Shi ZJ. Recent progress in the oxidative coupling of unactivated Csp 3-H bonds with other C-H bonds. Chem Commun (Camb) 2021; 57:13288-13296. [PMID: 34825675 DOI: 10.1039/d1cc04802c] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
The oxidative coupling between two carbon-hydrogen (C-H) bonds offers the most straightforward pathway to construct C-C bonds from hydrocarbons without pre-functionalization, exhibiting high step- and atom-economy. This article features the recent advances in the oxidative coupling of unactivated Csp3-H with different hybrid C-H bonds, including Csp-H, Csp2-H and Csp3-H bonds. The substrate scope, proposed mechanism and application of these reactions are summarized, intending to provide insights toward developing novel and efficient protocols for Csp3-C bond construction.
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Affiliation(s)
- Yang Liao
- Department of Chemistry, Fudan University, 2005 Songhu Rd, Shanghai, 200438, China.
| | - Feng Liu
- Department of Chemistry, Fudan University, 2005 Songhu Rd, Shanghai, 200438, China.
| | - Zhang-Jie Shi
- Department of Chemistry, Fudan University, 2005 Songhu Rd, Shanghai, 200438, China.
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31
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Mandal T, Yadav S, Choudhury J. Steric effect of NHC ligands in Pd(II)–NHC-catalyzed non-directed C–H acetoxylation of simple arenes. J Organomet Chem 2021. [DOI: 10.1016/j.jorganchem.2021.122047] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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32
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Ghosh S, Khandelia T, Patel BK. Solvent-Switched Manganese(I)-Catalyzed Regiodivergent Distal vs Proximal C-H Alkylation of Imidazopyridine with Maleimide. Org Lett 2021; 23:7370-7375. [PMID: 34543041 DOI: 10.1021/acs.orglett.1c02536] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A sustainable Mn(I)-catalyzed exclusive solvent-dependent functionalization of imidazopyridine with maleimide via an electrophilic metalation at the distal (in 2,2,2-trifluoroethanol (TFE)) and chelation assisted at the proximal (in tetrahydrofuran (THF)) has been developed. The strategy was successfully applied to the drug Zolimidine and a broad range of substrates, thereby reflecting the method's versatility.
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Affiliation(s)
- Subhendu Ghosh
- Department of Chemistry, Indian Institute of Technology Guwahati, North Guwahati 781039, India
| | - Tamanna Khandelia
- Department of Chemistry, Indian Institute of Technology Guwahati, North Guwahati 781039, India
| | - Bhisma K Patel
- Department of Chemistry, Indian Institute of Technology Guwahati, North Guwahati 781039, India
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33
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Morajkar RV, Fatrekar AP, Mohanty A, Vernekar AA. A review on the role of transition metals in selenylation reactions. Curr Org Synth 2021; 19:366-392. [PMID: 34544346 DOI: 10.2174/1570179418666210920150142] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2021] [Revised: 08/06/2021] [Accepted: 08/07/2021] [Indexed: 11/22/2022]
Abstract
Organoselenium chemistry has emerged as a distinctive area of research with tremendous utility in the synthesis of biologically and pharmaceutically active molecules. Significant synthetic approaches have been made for the construction of C-Se bonds which find use in other organic transformations. This review focuses on the versatility of transition metal-mediated selenylation reactions, providing insights into various synthetic pathways and mechanistic details. Further, this review aims to offer a broad perspective for designing efficient and novel catalysts to incorporate organoselenium moiety into the inert C-H bonds.
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Affiliation(s)
- Rasmi V Morajkar
- Inorganic and Physical Chemistry Laboratory, Council of Scientific and Industrial Research (CSIR) - Central Leather Research Institute (CLRI), Adyar, Chennai-600020. India
| | - Adarsh P Fatrekar
- Inorganic and Physical Chemistry Laboratory, Council of Scientific and Industrial Research (CSIR) - Central Leather Research Institute (CLRI), Adyar, Chennai-600020. India
| | - Abhijeet Mohanty
- Inorganic and Physical Chemistry Laboratory, Council of Scientific and Industrial Research (CSIR) - Central Leather Research Institute (CLRI), Adyar, Chennai-600020. India
| | - Amit A Vernekar
- Inorganic and Physical Chemistry Laboratory, Council of Scientific and Industrial Research (CSIR) - Central Leather Research Institute (CLRI), Adyar, Chennai-600020. India
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34
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Yu F, Li C, Wang C, Zhang H, Cao ZY. (1-Selenocyanatoethyl)benzene: A Selenocyanation Reagent for Site-Selective Selenocyanation of Inert Alkyl C(sp 3)-H Bonds. Org Lett 2021; 23:7156-7160. [PMID: 34468157 DOI: 10.1021/acs.orglett.1c02564] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
A new, simple, yet easily accessible, (1-selenocyanatoethyl)benzene has been designed and applied as a SeCN group transfer reagent for selenocyanation of aliphatic C(sp3)-H bonds for the first time. This protocol is featured with mild reaction conditions and wide substrate scope. Control experiments reveal that a radical-group transfer mechanism might be involved.
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Affiliation(s)
- Fei Yu
- Department of Chemistry, College of Science, China University of Petroleum (East China) Qingdao, Shandong 266580, China
| | - Chuang Li
- Department of Chemistry, College of Science, China University of Petroleum (East China) Qingdao, Shandong 266580, China
| | - Chuangye Wang
- Department of Chemistry, College of Science, China University of Petroleum (East China) Qingdao, Shandong 266580, China
| | - Hongwei Zhang
- Department of Chemistry, College of Science, China University of Petroleum (East China) Qingdao, Shandong 266580, China
| | - Zhong-Yan Cao
- College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004, China
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35
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Skhiri A, Nagae H, Tsurugi H, Seki M, Mashima K. Effects of Silver Carbonate and p-Nitrobenzoic Acid for Accelerating Palladium-Catalyzed Allylic C-H Acyloxylation. Org Lett 2021; 23:7044-7048. [PMID: 34432479 DOI: 10.1021/acs.orglett.1c02406] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An allylic C-H acyloxylation of terminal alkenes with 4-nitrobenzoic acid was assisted by a bidentate-sulfoxide-ligated palladium catalyst combined with 1,4-benzoquinone and Ag2CO3 under mild reaction conditions. The catalytic activity was remarkably enhanced by Ag2CO3 as an additive and 4-nitrobenzoic acid as a carboxylate source; both components were essential to exhibiting high catalytic activity, high branch selectivity, and a wide substrate scope with low loading of the palladium catalyst. Branch-selective allylic acyloxylation of ethyl 7-octenoate (1a) gave the product which was led to ethyl 6,8-dihydroxyoctanoate (5), a useful synthetic intermediate of (R)-α-lipoic acid.
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Affiliation(s)
- Aymen Skhiri
- Department of Chemistry, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka, Japan
| | - Haruki Nagae
- Department of Chemistry, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka, Japan
| | - Hayato Tsurugi
- Department of Chemistry, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka, Japan
| | | | - Kazushi Mashima
- Department of Chemistry, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka, Japan
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36
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Banga S, Kaur R, Babu SA. Construction of Racemic and Enantiopure Biaryl Unnatural Amino Acid Derivatives via Pd(II)‐Catalyzed Arylation of Unactivated Csp
3
−H Bonds. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100683] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Shefali Banga
- Department of Chemical Sciences Indian Institute of Science Education and Research Mohali Knowledge City Sector 81 SAS Nagar, Mohali, Manauli P.O. Punjab 140306 India
| | - Ramandeep Kaur
- Department of Chemical Sciences Indian Institute of Science Education and Research 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 Mohali Knowledge City Sector 81 SAS Nagar, Mohali, Manauli P.O. Punjab 140306 India
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37
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Diao H, Wang C, Zhang Z, Shi Z, Liu F. Fe‐Catalyzed Intramolecular Cross‐Dehydrogenative Arylation (CDA), Efficient Synthesis of 1‐Arylnaphthalenes and 4‐Arylcoumarins. Helv Chim Acta 2021. [DOI: 10.1002/hlca.202100056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Haiyan Diao
- School of Perfume and Aroma Technology Shanghai Institute of Technology 100 Haiquan Rd Shanghai 201418 P. R. China
| | - Changcheng Wang
- Department of Chemistry Fudan University 2005 Songhu Rd Shanghai 200438 P. R. China
| | - Zhen Zhang
- School of Perfume and Aroma Technology Shanghai Institute of Technology 100 Haiquan Rd Shanghai 201418 P. R. China
| | - Zhangjie Shi
- Department of Chemistry Fudan University 2005 Songhu Rd Shanghai 200438 P. R. China
| | - Feng Liu
- School of Perfume and Aroma Technology Shanghai Institute of Technology 100 Haiquan Rd Shanghai 201418 P. R. China
- Department of Chemistry Fudan University 2005 Songhu Rd Shanghai 200438 P. R. China
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38
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Ruyet L, Lapuh MI, Koshti VS, Földesi T, Jubault P, Poisson T, Novák Z, Besset T. Z-Selective Pd-catalyzed 2,2,2-trifluoroethylation of acrylamides at room temperature. Chem Commun (Camb) 2021; 57:6241-6244. [PMID: 34079967 DOI: 10.1039/d1cc02007b] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
A straightforward 2,2,2-trifluoroethylation of acrylamides by Pd-catalyzed C-H bond activation was reported by using a fluorinated hypervalent iodine reagent as a coupling partner. At room temperature, this additive-free approach allowed the synthesis of Z-2,2,2-trifluoroethylated acrylamides (19 examples, up to 73% yield) in a stereoselective manner. Under these mild reaction conditions, the methodology turned out to be functional group tolerant and mechanistic studies gave us a better understanding of the transformation.
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Affiliation(s)
- Louise Ruyet
- Normandie Univ, INSA Rouen, UNIROUEN, CNRS, COBRA (UMR 6014), Rouen 76000, France.
| | - Maria I Lapuh
- Normandie Univ, INSA Rouen, UNIROUEN, CNRS, COBRA (UMR 6014), Rouen 76000, France.
| | - Vijay S Koshti
- Normandie Univ, INSA Rouen, UNIROUEN, CNRS, COBRA (UMR 6014), Rouen 76000, France.
| | - Tamás Földesi
- ELTE "Lendület" Catalysis and Organic Synthesis Research Group, Institute of Chemistry, Eötvös Loránd University, Faculty of Science, Budapest H-1117, Hungary
| | - Philippe Jubault
- Normandie Univ, INSA Rouen, UNIROUEN, CNRS, COBRA (UMR 6014), Rouen 76000, France.
| | - Thomas Poisson
- Normandie Univ, INSA Rouen, UNIROUEN, CNRS, COBRA (UMR 6014), Rouen 76000, France. and Institut Universitaire de France, Paris 75231, France
| | - Zoltán Novák
- ELTE "Lendület" Catalysis and Organic Synthesis Research Group, Institute of Chemistry, Eötvös Loránd University, Faculty of Science, Budapest H-1117, Hungary
| | - Tatiana Besset
- Normandie Univ, INSA Rouen, UNIROUEN, CNRS, COBRA (UMR 6014), Rouen 76000, France.
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39
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Ruyet L, Poisson T, Besset T. Transition Metal‐Free Regioselective Remote C−H Bond 2,2,2‐Trifluoroethoxylation of 8‐Aminoquinoline Derivatives at the C5 Position. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100580] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Louise Ruyet
- Normandie Univ, INSA Rouen, UNIROUEN, CNRS, COBRA (UMR 6014) 76000 Rouen France
| | - Thomas Poisson
- Normandie Univ, INSA Rouen, UNIROUEN, CNRS, COBRA (UMR 6014) 76000 Rouen France
- Institut Universitaire de France 75231 Paris France
| | - Tatiana Besset
- Normandie Univ, INSA Rouen, UNIROUEN, CNRS, COBRA (UMR 6014) 76000 Rouen France
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40
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Yue WJ, Day CS, Martin R. Site-Selective Defluorinative sp3 C–H Alkylation of Secondary Amides. J Am Chem Soc 2021; 143:6395-6400. [DOI: 10.1021/jacs.1c03126] [Citation(s) in RCA: 73] [Impact Index Per Article: 24.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Wen-Jun Yue
- The Barcelona Institute of Science and Technology, Institute of Chemical Research of Catalonia (ICIQ), Av. Països Catalans 16, 43007 Tarragona, Spain
- Departament de Química Analítica i Química Orgànica, Universitat Rovira i Virgili, c/Marcel·lí Domingo, 1, 43007 Tarragona, Spain
| | - Craig S. Day
- The Barcelona Institute of Science and Technology, Institute of Chemical Research of Catalonia (ICIQ), Av. Països Catalans 16, 43007 Tarragona, Spain
- Departament de Química Analítica i Química Orgànica, Universitat Rovira i Virgili, c/Marcel·lí Domingo, 1, 43007 Tarragona, Spain
| | - Ruben Martin
- The Barcelona Institute of Science and Technology, Institute of Chemical Research of Catalonia (ICIQ), Av. Països Catalans 16, 43007 Tarragona, Spain
- ICREA, Passeig Lluís Companys, 23, 08010, Barcelona, Spain
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41
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Zhou L, Wei S, Lei Z, Zhu G, Zhang Z. Transition-Metal-Free α Csp 3 -H Cyanation of Sulfonamides. Chemistry 2021; 27:7103-7107. [PMID: 33769613 DOI: 10.1002/chem.202100902] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Indexed: 12/18/2022]
Abstract
This report describes the site-selective α-functionalization of sulfonylamide derivatives through the in-situ generation of imine intermediates. The N-F sulfonylamides, which could facilitate the elimination to generate imines, are coupled with TBACN to efficiently and mildly afford α-amino cyanides. Comparing with Strecker reaction, this transformation offers a complementary strategy to efficiently construct α-amino cyanides from direct α C-H functionalization of sulfonylamindes. The reaction is also characterized by broad substrate scope and flash chromatography column free workup. More importantly, the new two-electron pathway to generate imines through manipulation of the leaving group allows us to achieve excellent α site-selectivity.
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Affiliation(s)
- Liejin Zhou
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua, 321004, P. R. China
| | - Siqi Wei
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua, 321004, P. R. China
| | - Ziran Lei
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua, 321004, P. R. China
| | - Gangguo Zhu
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua, 321004, P. R. China
| | - Zuxiao Zhang
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua, 321004, P. R. China
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42
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Strategic evolution in transition metal-catalyzed directed C–H bond activation and future directions. Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2020.213683] [Citation(s) in RCA: 93] [Impact Index Per Article: 31.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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43
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Suseelan AS, Dutta A, Lahiri GK, Maiti D. Organopalladium Intermediates in Coordination-Directed C(sp3)-H Functionalizations. TRENDS IN CHEMISTRY 2021. [DOI: 10.1016/j.trechm.2020.11.009] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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44
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Liao Y, Zhou Y, Zhang Z, Fan J, Liu F, Shi Z. Intramolecular Oxidative Coupling between Unactivated Aliphatic C-H and Aryl C-H Bonds. Org Lett 2021; 23:1251-1257. [PMID: 33555883 DOI: 10.1021/acs.orglett.0c04239] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Direct oxidative coupling of different inert C-H bonds is the most straightforward and environmentally benign method to construct C-C bonds. In this paper, we developed a Pd-catalyzed intramolecular oxidative coupling between unactivated aliphatic and aryl C-H bonds. This chemistry showed great potential to build up fused cyclic scaffolds from linear substrates through oxidative couplings. Privileged chromane and tetralin scaffolds were constructed from readily available linear starting materials in the absence of any organohalides and organometallic partners.
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Affiliation(s)
- Yang Liao
- Department of Chemistry, Fudan University, Shanghai 200438, China
| | - Yi Zhou
- School of Perfume and Aroma Technology, Shanghai Institute of Technology, Shanghai 201418, China
| | - Zhen Zhang
- School of Perfume and Aroma Technology, Shanghai Institute of Technology, Shanghai 201418, China
| | - Junzhen Fan
- Department of Chemistry, Fudan University, Shanghai 200438, China
| | - Feng Liu
- Department of Chemistry, Fudan University, Shanghai 200438, China.,School of Perfume and Aroma Technology, Shanghai Institute of Technology, Shanghai 201418, China
| | - Zhangjie Shi
- Department of Chemistry, Fudan University, Shanghai 200438, China.,State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Shanghai 200032, China
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45
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Panda P, Pal K, Chakroborty S. Robust molecular trends in Pd-catalyzed C(sp2/sp3)-H activation reactions – A review. RESULTS IN CHEMISTRY 2021. [DOI: 10.1016/j.rechem.2021.100154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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46
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Chen J, Bai C, Ma H, Liu D, Bao YS. Nano palladium catalyzed C(sp3) H bonds arylation by a transient directing strategy. CHINESE CHEM LETT 2021. [DOI: 10.1016/j.cclet.2020.02.055] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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47
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Aneeja T, Neetha M, Afsina CMA, Anilkumar G. Recent advances and perspectives in manganese-catalyzed C–H activation. Catal Sci Technol 2021. [DOI: 10.1039/d0cy02087g] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Manganese-catalyzed C–H activation has become an emerging area in organic chemistry. These efficient and eco-friendly manganese catalysed reactions provides new opportunities in the field of synthetic organic chemistry.
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Affiliation(s)
| | - Mohan Neetha
- School of Chemical Sciences
- Mahatma Gandhi University
- Kottayam
- India
| | - C. M. A. Afsina
- School of Chemical Sciences
- Mahatma Gandhi University
- Kottayam
- India
| | - Gopinathan Anilkumar
- School of Chemical Sciences
- Mahatma Gandhi University
- Kottayam
- India
- Advanced Molecular Materials Research Centre (AMMRC)
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48
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Li Y, Chen P, Chen ZC, Du W, Ouyang Q, Chen YC. Palladium-catalysed oxidative nucleophilic allylation between alkenes and activated ketimines. Org Chem Front 2021. [DOI: 10.1039/d1qo00505g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
A direct linear regioselective oxidative allylation reaction between alkenes and activated ketimines has been developed by using a Pd(OAc)2/2,6-dimethyl-1,4-benzoquinone system.
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Affiliation(s)
- Yue Li
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Ministry of Education and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Peng Chen
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Ministry of Education and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Zhi-Chao Chen
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Ministry of Education and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Wei Du
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Ministry of Education and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Qin Ouyang
- College of Pharmacy, Third Military Medical University, Shapingba, Chongqing 400038, China
| | - Ying-Chun Chen
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Ministry of Education and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
- College of Pharmacy, Third Military Medical University, Shapingba, Chongqing 400038, China
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49
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Himeno R, Ito S, Tanaka K, Chujo Y. Synthesis, crystal structure, solid-state optical property and C–H activation of sp 3 carbon of highly-stable 1-(2′,6′-dimesitylphenyl)-2,3,4,5-tetraphenylborole. NEW J CHEM 2021. [DOI: 10.1039/d1nj04666g] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
We synthesized a borole having near-infrared absorption and found transformation to the unexpected fused molecule through C–H activation.
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Affiliation(s)
- Ryoji Himeno
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Shunichiro Ito
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Kazuo Tanaka
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Yoshiki Chujo
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
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50
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Mingo MM, Rodríguez N, Arrayás RG, Carretero JC. Remote C(sp 3)–H functionalization via catalytic cyclometallation: beyond five-membered ring metallacycle intermediates. Org Chem Front 2021. [DOI: 10.1039/d1qo00389e] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Despite impressive recent momentum gained in C(sp3)–H activation, achieving high regioselectivity in molecules containing different C–H bonds with similar high energy without abusing tailored substitution remains as one of the biggest challenges.
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Affiliation(s)
- Mario Martínez Mingo
- Department of Organic Chemistry, Universidad Autónoma de Madrid, c/Fco. Tomás y Valiente 7, Cantoblanco 28049, Madrid, Spain
| | - Nuria Rodríguez
- Department of Organic Chemistry, Universidad Autónoma de Madrid, c/Fco. Tomás y Valiente 7, Cantoblanco 28049, Madrid, Spain
- Institute for Advanced Research in Chemical Sciences (IAdChem), Universidad Autónoma de Madrid (UAM), Spain
| | - Ramón Gómez Arrayás
- Department of Organic Chemistry, Universidad Autónoma de Madrid, c/Fco. Tomás y Valiente 7, Cantoblanco 28049, Madrid, Spain
- Institute for Advanced Research in Chemical Sciences (IAdChem), Universidad Autónoma de Madrid (UAM), Spain
| | - Juan C. Carretero
- Department of Organic Chemistry, Universidad Autónoma de Madrid, c/Fco. Tomás y Valiente 7, Cantoblanco 28049, Madrid, Spain
- Institute for Advanced Research in Chemical Sciences (IAdChem), Universidad Autónoma de Madrid (UAM), Spain
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