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Mo J, Messinis AM, Li J, Warratz S, Ackermann L. Chelation-Assisted Iron-Catalyzed C-H Activations: Scope and Mechanism. Acc Chem Res 2024; 57:10-22. [PMID: 38116619 PMCID: PMC10765378 DOI: 10.1021/acs.accounts.3c00294] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2023] [Revised: 11/22/2023] [Accepted: 11/27/2023] [Indexed: 12/21/2023]
Abstract
ConspectusTo improve the resource economy of molecular syntheses, researchers have developed strategies to directly activate otherwise inert C-H bonds, thus avoiding cumbersome and costly substrate prefunctionalizations. During the past two decades, remarkable progress in coordination chemistry has set the stage for developing increasingly viable metal catalysts for C-H activations. Despite remarkable advances, C-H activations are largely dominated by precious 4d and 5d transition metal catalysts based primarily on palladium, ruthenium, iridium, and rhodium, thus decreasing the inherent sustainable nature of the C-H activation approach. Therefore, advancing catalytic reactions based on Earth-abundant and less toxic 3d transition metals, especially nontoxic and inexpensive iron, represents a desirable and attractive alternative. While research had previously focused on 8-aminoquinoline directing groups in C-H activations, we have devised easily accessible, tunable, and clickable triazoles, which feature widespread applications in bioactive compounds and drugs, among others, as peptide isosteres. Thus, in contrast to other directing groups, the triazole group is a highly desirable structural motif and functions as a bioisostere in medicine and biology, where it is exploited to mimic amide bonds.This Account summarizes the evolution of chelation-assisted iron-catalyzed C-H activations via C-H, C-H/N-H, and C-H/N-H/C-C bond cleavages, with a topical focus on the most recent contributions of our team. Thus, the triazole-enabled iron catalysis has surfaced as a transformative platform for a large variety of C-H transformations, including arylations, alkylations, alkenylations, allylations, annulations, and alkynylations, achieved through C-H activations with organometallic reagents, organohalides, alkynes, alkenes, allenes, and bicyclopropylidenes among others. Consequently, we developed widely applicable methods for the versatile preparation of decorated arenes and heteroarenes, providing access to benzamides, isoquinolones, pyrrolones, pyridones, phenones, indoles, and isoindolinones, among others. Most of these reactions employed 1,2-dichloroisobutane (DCIB) as an oxidant. Notably, chemical-oxidant-free strategies were also developed, with the major breakthroughs being the use of internal oxidants in oxidative annulations, the use of resource-economic electrocatalysis, and the development of well-defined iron(0)-mediated catalysis. In addition, a highly enantioselective inner-sphere C-H alkylation of (aza)indoles was developed by designing novel remotely decorated N-heterocyclic carbene ligands with dispersion energy donors. In addition, detailed mechanistic experiments including kinetic analyses, intermediate isolation, Mößbauer spectroscopy, and computation provided strong support for the mode of catalysis operation, enabling unprecedented C-H activations. Thereby, low-valent iron catalysts paved the way toward weakly coordinating ketones and enantioselective iron-catalyzed C-H activations through organometallic intermediates.
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Affiliation(s)
- Jiayu Mo
- Institut
für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen, Tammannstraße 2, 37077 Göttingen, Germany
- School
of Pharmacy, Guangxi Medical University, Shuangyong Road 22, 530021 Nanning, P. R. China
| | - Antonis M. Messinis
- Institut
für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen, Tammannstraße 2, 37077 Göttingen, Germany
- WISCh
(Wöhler-Research Institute for Sustainable Chemistry), Georg-August-Universität Göttingen, Tammannstraße 2, Göttingen 37077, Germany
| | - Jinlian Li
- School
of Pharmacy, Guangxi Medical University, Shuangyong Road 22, 530021 Nanning, P. R. China
| | - Svenja Warratz
- Institut
für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen, Tammannstraße 2, 37077 Göttingen, Germany
- WISCh
(Wöhler-Research Institute for Sustainable Chemistry), Georg-August-Universität Göttingen, Tammannstraße 2, Göttingen 37077, Germany
| | - Lutz Ackermann
- Institut
für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen, Tammannstraße 2, 37077 Göttingen, Germany
- WISCh
(Wöhler-Research Institute for Sustainable Chemistry), Georg-August-Universität Göttingen, Tammannstraße 2, Göttingen 37077, Germany
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2
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Desai B, Uppuluru A, Dey A, Deshpande N, Dholakiya BZ, Sivaramakrishna A, Naveen T, Padala K. The recent advances in cobalt-catalyzed C(sp 3)-H functionalization reactions. Org Biomol Chem 2023; 21:673-699. [PMID: 36602117 DOI: 10.1039/d2ob01936a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Over the past decades, reactions involving C-H functionalization have become a hot theme in organic transformations because they have a lot of potential for the streamlined synthesis of complex molecules. C(sp3)-H bonds are present in most organic species. Since organic molecules have massive significance in various aspects of life, the exploitation and functionalization of C(sp3)-H bonds hold enormous importance. In recent years, the first-row transition metal-catalyzed direct and selective functionalization of C-H bonds has emerged as a simple and environmentally friendly synthetic method due to its low cost, unique reactivity profiles and easy availability. Therefore, research advancements are being made to conceive catalytic systems that foster direct C(sp3)-H functionalization under benign reaction conditions. Cobalt-based catalysts offer mild and convenient reaction conditions at a reasonable expense compared to conventional 2nd and 3rd-row transition metal catalysts. Consequently, the probing of Co-based catalysts for C(sp3)-H functionalization is one of the hot topics from the outlook of an organic chemist. This review primarily focuses on the literature from 2018 to 2022 and sheds light on the substrate scope, selectivity, benefits and limitations of cobalt catalysts for organic transformations.
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Affiliation(s)
- Bhargav Desai
- Department of Chemistry, Sardar Vallabhbhai National Institute of Technology, Surat, Gujarat-395 007, India.
| | - Ajay Uppuluru
- Department of Chemistry, School of Advanced Science, Vellore Institute of Technology, Katpadi, Vellore, Tamil Nadu, 632014, India.
| | - Ashutosh Dey
- Department of Chemistry, School of Advanced Science, Vellore Institute of Technology, Katpadi, Vellore, Tamil Nadu, 632014, India.
| | - Neha Deshpande
- Department of Chemistry, Sardar Vallabhbhai National Institute of Technology, Surat, Gujarat-395 007, India.
| | - Bharatkumar Z Dholakiya
- Department of Chemistry, Sardar Vallabhbhai National Institute of Technology, Surat, Gujarat-395 007, India.
| | - Akella Sivaramakrishna
- Department of Chemistry, School of Advanced Science, Vellore Institute of Technology, Katpadi, Vellore, Tamil Nadu, 632014, India.
| | - Togati Naveen
- Department of Chemistry, Sardar Vallabhbhai National Institute of Technology, Surat, Gujarat-395 007, India.
| | - Kishor Padala
- Department of Chemistry, School of Advanced Science, Vellore Institute of Technology, Katpadi, Vellore, Tamil Nadu, 632014, India. .,Central Tribal University of Andhra Pradesh, Kondakarakam Village, Cantonment, Vizianagaram, Andhra Pradesh, 535003, India
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3
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Hogg A, Wheatley M, Domingo-Legarda P, Carral-Menoyo A, Cottam N, Larrosa I. Ruthenium-Catalyzed Monoselective C-H Methylation and d 3-Methylation of Arenes. JACS AU 2022; 2:2529-2538. [PMID: 36465534 PMCID: PMC9709947 DOI: 10.1021/jacsau.2c00399] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Revised: 09/21/2022] [Accepted: 10/03/2022] [Indexed: 05/26/2023]
Abstract
Site-selective installation of C-Me bonds remains a powerful and sought-after tool to alter the chemical and pharmacological properties of a molecule. Direct C-H functionalization provides an attractive means of achieving this transformation. Such protocols, however, typically utilize harsh conditions and hazardous methylating agents with poor applicability toward late-stage functionalization. Furthermore, highly monoselective methylation protocols remain scarce. Herein, we report an efficient monoselective, directed ortho-methylation of arenes using N,N,N-trimethylanilinium salts as noncarcinogenic, bench-stable methylating agents. We extend this protocol to d 3-methylation in addition to the late-stage functionalization of pharmaceutically active compounds. Detailed kinetic studies indicate the rate-limiting in situ formation of MeI is integral to the observed reactivity.
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4
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Zhou P, Chen Y, Xie Z. Iron-Catalyzed Selective B–H Activation for 4/5-fold Methylation and Arylation of Carboranes. ACS Catal 2022. [DOI: 10.1021/acscatal.2c02120] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Peng Zhou
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong, Shatin, N. T., Hong Kong, China
| | - Yu Chen
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong, Shatin, N. T., Hong Kong, China
| | - Zuowei Xie
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong, Shatin, N. T., Hong Kong, China
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5
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Liu X, Kuang C, Su C. Transition-metal Catalyzed 1,2,3-Triazole-assisted C—H Functionalization Processes. ACTA CHIMICA SINICA 2022. [DOI: 10.6023/a22040147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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6
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Liu B, Romine AM, Rubel CZ, Engle KM, Shi BF. Transition-Metal-Catalyzed, Coordination-Assisted Functionalization of Nonactivated C(sp 3)-H Bonds. Chem Rev 2021; 121:14957-15074. [PMID: 34714620 PMCID: PMC8968411 DOI: 10.1021/acs.chemrev.1c00519] [Citation(s) in RCA: 196] [Impact Index Per Article: 65.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Transition-metal-catalyzed, coordination-assisted C(sp3)-H functionalization has revolutionized synthetic planning over the past few decades as the use of these directing groups has allowed for increased access to many strategic positions in organic molecules. Nonetheless, several challenges remain preeminent, such as the requirement for high temperatures, the difficulty in removing or converting directing groups, and, although many metals provide some reactivity, the difficulty in employing metals outside of palladium. This review aims to give a comprehensive overview of coordination-assisted, transition-metal-catalyzed, direct functionalization of nonactivated C(sp3)-H bonds by covering the literature since 2004 in order to demonstrate the current state-of-the-art methods as well as the current limitations. For clarity, this review has been divided into nine sections by the transition metal catalyst with subdivisions by the type of bond formation. Synthetic applications and reaction mechanism are discussed where appropriate.
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Affiliation(s)
- Bin Liu
- Center of Chemistry for Frontier Technologies, Department of Chemistry, Zhejiang University, 38 Zheda Rd., Hangzhou 310027, China.,College of Chemistry, Nanchang University, Nanchang, Jiangxi 330031, China
| | - Andrew M. Romine
- Department of Chemistry, The Scripps Research Institute, 10550 N. Torrey Pines Rd., La Jolla, California 92037, United States
| | - Camille Z. Rubel
- Department of Chemistry, The Scripps Research Institute, 10550 N. Torrey Pines Rd., La Jolla, California 92037, United States
| | - Keary M. Engle
- Department of Chemistry, The Scripps Research Institute, 10550 N. Torrey Pines Rd., La Jolla, California 92037, United States.,Corresponding Author- (K. M. E.); (B.-F. S.)
| | - Bing-Feng Shi
- Center of Chemistry for Frontier Technologies, Department of Chemistry, Zhejiang University, 38 Zheda Rd., Hangzhou 310027, China.,College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450001, China.,School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, China,Corresponding Author- (K. M. E.); (B.-F. S.)
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7
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Bhatia S, DeMuth JC, Neidig ML. Intermediates and mechanism in iron-catalyzed C-H methylation with trimethylaluminum. Chem Commun (Camb) 2021; 57:12784-12787. [PMID: 34782896 DOI: 10.1039/d1cc05607g] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
A mechanistic study is performed on the reaction method for iron-catalyzed C-H methylation with AlMe3 reagent, previously proposed to involve cyclometalated iron(III) intermediates and an iron(III)/(I) reaction cycle. Detailed spectroscopic studies (57Fe Mössbauer, EPR) during catalysis and in stoichiometric reactions identify iron(II) complexes, including cyclometalated iron(II) intermediates, as the major iron species formed in situ under catalytic reaction conditions. Reaction studies identify a cyclometalated iron(II)-methyl species as the key intermediate leading to C-H methylated product upon reaction with oxidant, consistent with a previously proposed iron(II)/iron(III)/iron(I) reaction manifold for C-H arylation.
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Affiliation(s)
- Shilpa Bhatia
- Department of Chemistry, University of Rochester, Rochester, New York 14627, USA.
| | - Joshua C DeMuth
- Department of Chemistry, University of Rochester, Rochester, New York 14627, USA.
| | - Michael L Neidig
- Department of Chemistry, University of Rochester, Rochester, New York 14627, USA.
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8
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Suseelan Sarala A, Bhowmick S, Carvalho RL, Al‐Thabaiti SA, Mokhtar M, Silva Júnior EN, Maiti D. Transition‐Metal‐Catalyzed Selective Alkynylation of C−H Bonds. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100992] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Anjana Suseelan Sarala
- Department of Chemistry Indian Institute of Technology Bombay Powai 400076 Mumbai India
- Department of Chemistry Saarland University 66123 Saarbrucken Germany
| | - Suman Bhowmick
- Department of Chemistry Indian Institute of Technology Bombay Powai 400076 Mumbai India
| | - Renato L. Carvalho
- Department of Chemistry Federal University of Minas Gerais 31270-901 Belo Horizonte MG Brazil
| | | | - Mohamed Mokhtar
- Chemistry Department Faculty of Science King Abdulaziz University 21589 Jeddah Saudi Arabia
| | | | - Debabrata Maiti
- Department of Chemistry Indian Institute of Technology Bombay Powai 400076 Mumbai India
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9
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Bakas NJ, Neidig ML. Additive and Counterion Effects in Iron-Catalyzed Reactions Relevant to C-C Bond Formation. ACS Catal 2021; 11:8493-8503. [PMID: 35664726 DOI: 10.1021/acscatal.1c00928] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The use of iron catalysts in carbon-carbon bond forming reactions is of interest as an alternative to precious metal catalysts, offering reduced cost, lower toxicity, and different reactivity. While well-defined ligands such as N-heterocyclic carbenes (NHCs) and phosphines can be highly effective in these reactions, additional additives such as N-methylpyrrolidone (NMP), N,N,N',N'-tetramethylethylenediamine (TMEDA), and iron salts that alter speciation can also be employed to achieve high product yields. However, in contrast to well-defined iron ligands, the roles of these additives are often ambiguous, and molecular-level insights into how they achieve effective catalysis are not well-defined. Using a unique physical-inorganic in situ spectroscopic approach, detailed insights into the effect of additives on iron speciation, mechanism, and catalysis can inform further reaction development. In this Perspective, recent advances will be discussed as well as ongoing challenges and potential opportunities in iron-catalyzed reactions.
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Affiliation(s)
- Nikki J Bakas
- Department of Chemistry, University of Rochester, Rochester, New York 14627, United States
| | - Michael L Neidig
- Department of Chemistry, University of Rochester, Rochester, New York 14627, United States
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10
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DeMuth JC, Song Z, Carpenter SH, Boddie TE, Radović A, Baker TM, Gutierrez O, Neidig ML. Experimental and computational studies of the mechanism of iron-catalysed C-H activation/functionalisation with allyl electrophiles. Chem Sci 2021; 12:9398-9407. [PMID: 34349913 PMCID: PMC8278975 DOI: 10.1039/d1sc01661j] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Accepted: 05/23/2021] [Indexed: 11/21/2022] Open
Abstract
Synthetic methods that utilise iron to facilitate C–H bond activation to yield new C–C and C–heteroatom bonds continue to attract significant interest. However, the development of these systems is still hampered by a limited molecular-level understanding of the key iron intermediates and reaction pathways that enable selective product formation. While recent studies have established the mechanism for iron-catalysed C–H arylation from aryl-nucleophiles, the underlying mechanistic pathway of iron-catalysed C–H activation/functionalisation systems which utilise electrophiles to establish C–C and C–heteroatom bonds has not been determined. The present study focuses on an iron-catalysed C–H allylation system, which utilises allyl chlorides as electrophiles to establish a C–allyl bond. Freeze-trapped inorganic spectroscopic methods (57Fe Mössbauer, EPR, and MCD) are combined with correlated reaction studies and kinetic analyses to reveal a unique and rapid reaction pathway by which the allyl electrophile reacts with a C–H activated iron intermediate. Supporting computational analysis defines this novel reaction coordinate as an inner-sphere radical process which features a partial iron–bisphosphine dissociation. Highlighting the role of the bisphosphine in this reaction pathway, a complementary study performed on the reaction of allyl electrophile with an analogous C–H activated intermediate bearing a more rigid bisphosphine ligand exhibits stifled yield and selectivity towards allylated product. An additional spectroscopic analysis of an iron-catalysed C–H amination system, which incorporates N-chloromorpholine as the C–N bond-forming electrophile, reveals a rapid reaction of electrophile with an analogous C–H activated iron intermediate consistent with the inner-sphere radical process defined for the C–H allylation system, demonstrating the prevalence of this novel reaction coordinate in this sub-class of iron-catalysed C–H functionalisation systems. Overall, these results provide a critical mechanistic foundation for the rational design and development of improved systems that are efficient, selective, and useful across a broad range of C–H functionalisations. Experimental and computational studies support an inner-sphere radical pathway for iron-catalysed C–H activation/functionalisation with allyl electrophiles.![]()
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Affiliation(s)
- Joshua C DeMuth
- Department of Chemistry, University of Rochester Rochester New York 14627 USA
| | - Zhihui Song
- Department of Chemistry and Biochemistry, University of Maryland College Park Maryland 20742 USA
| | | | - Theresa E Boddie
- Department of Chemistry, University of Rochester Rochester New York 14627 USA
| | - Aleksa Radović
- Department of Chemistry, University of Rochester Rochester New York 14627 USA
| | - Tessa M Baker
- Department of Chemistry, University of Rochester Rochester New York 14627 USA
| | - Osvaldo Gutierrez
- Department of Chemistry and Biochemistry, University of Maryland College Park Maryland 20742 USA
| | - Michael L Neidig
- Department of Chemistry, University of Rochester Rochester New York 14627 USA
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11
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Wu Z, Wei F, Wan B, Zhang Y. Pd-Catalyzed ipso, meta-Dimethylation of ortho-Substituted Iodoarenes via a Base-Controlled C-H Activation Cascade with Dimethyl Carbonate as the Methyl Source. J Am Chem Soc 2021; 143:4524-4530. [PMID: 33750128 DOI: 10.1021/jacs.0c13057] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
A methyl group can have a profound impact on the pharmacological properties of organic molecules. Hence, developing methylation methods and methylating reagents is essential in medicinal chemistry. We report a palladium-catalyzed dimethylation reaction of ortho-substituted iodoarenes using dimethyl carbonate as a methyl source. In the presence of K2CO3 as a base, iodoarenes are dimethylated at the ipso- and meta-positions of the iodo group, which represents a novel strategy for meta-C-H methylation. With KOAc as the base, subsequent oxidative C(sp3)-H/C(sp3)-H coupling occurs; in this case, the overall transformation achieves triple C-H activation to form three new C-C bonds. These reactions allow expedient access to 2,6-dimethylated phenols, 2,3-dihydrobenzofurans, and indanes, which are ubiquitous structural motifs and essential synthetic intermediates of biologically and pharmacologically active compounds.
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Affiliation(s)
- Zhuo Wu
- School of Chemical Science and Engineering, Shanghai Key Laboratory of Chemical Assessment and Sustainability, Tongji University, 1239 Siping Road, Shanghai 200092, China
| | - Feng Wei
- School of Chemical Science and Engineering, Shanghai Key Laboratory of Chemical Assessment and Sustainability, Tongji University, 1239 Siping Road, Shanghai 200092, China
| | - Bin Wan
- School of Chemical Science and Engineering, Shanghai Key Laboratory of Chemical Assessment and Sustainability, Tongji University, 1239 Siping Road, Shanghai 200092, China
| | - Yanghui Zhang
- School of Chemical Science and Engineering, Shanghai Key Laboratory of Chemical Assessment and Sustainability, Tongji University, 1239 Siping Road, Shanghai 200092, China
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12
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Ni S, Hribersek M, Baddigam SK, Ingner FJL, Orthaber A, Gates PJ, Pilarski LT. Mechanochemical Solvent-Free Catalytic C-H Methylation. Angew Chem Int Ed Engl 2021; 60:6660-6666. [PMID: 33031646 PMCID: PMC7986365 DOI: 10.1002/anie.202010202] [Citation(s) in RCA: 57] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2020] [Indexed: 12/29/2022]
Abstract
The mechanochemical, solvent-free, highly regioselective, rhodium-catalyzed C-H methylation of (hetero)arenes is reported. The reaction shows excellent functional-group compatibility and is demonstrated to work for the late-stage C-H methylation of biologically active compounds. The method requires no external heating and benefits from considerably shorter reaction times than previous solution-based C-H methylation protocols. Additionally, the mechanochemical approach is shown to enable the efficient synthesis of organometallic complexes that are difficult to generate conventionally.
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Affiliation(s)
- Shengjun Ni
- Department of Chemistry—BMCUppsala UniversityBox 57675123UppsalaSweden
| | - Matic Hribersek
- Department of Chemistry—BMCUppsala UniversityBox 57675123UppsalaSweden
| | | | | | - Andreas Orthaber
- Department of Chemistry—Ångström LaboratoriesUppsala UniversityBox 52375120UppsalaSweden
| | - Paul J. Gates
- School of ChemistryUniversity of BristolCantock's Close, CliftonBristolBS8 1TSUK
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13
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Ilies L. C–H Activation Catalyzed by Earth-Abundant Metals. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2021. [DOI: 10.1246/bcsj.20200349] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Laurean Ilies
- RIKEN Center for Sustainable Resource Science, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
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14
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Aynetdinova D, Callens MC, Hicks HB, Poh CYX, Shennan BDA, Boyd AM, Lim ZH, Leitch JA, Dixon DJ. Installing the “magic methyl” – C–H methylation in synthesis. Chem Soc Rev 2021; 50:5517-5563. [DOI: 10.1039/d0cs00973c] [Citation(s) in RCA: 71] [Impact Index Per Article: 23.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Following notable cases of remarkable potency increases in methylated analogues of lead compounds, this review documents the state-of-the-art in C–H methylation technology.
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Affiliation(s)
- Daniya Aynetdinova
- Department of Chemistry
- University of Oxford
- Chemistry Research Laboratory
- Oxford
- UK
| | - Mia C. Callens
- Department of Chemistry
- University of Oxford
- Chemistry Research Laboratory
- Oxford
- UK
| | - Harry B. Hicks
- Department of Chemistry
- University of Oxford
- Chemistry Research Laboratory
- Oxford
- UK
| | - Charmaine Y. X. Poh
- Department of Chemistry
- University of Oxford
- Chemistry Research Laboratory
- Oxford
- UK
| | | | - Alistair M. Boyd
- Department of Chemistry
- University of Oxford
- Chemistry Research Laboratory
- Oxford
- UK
| | - Zhong Hui Lim
- Department of Chemistry
- University of Oxford
- Chemistry Research Laboratory
- Oxford
- UK
| | - Jamie A. Leitch
- Department of Chemistry
- University of Oxford
- Chemistry Research Laboratory
- Oxford
- UK
| | - Darren J. Dixon
- Department of Chemistry
- University of Oxford
- Chemistry Research Laboratory
- Oxford
- UK
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15
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Rana S, Biswas JP, Paul S, Paik A, Maiti D. Organic synthesis with the most abundant transition metal–iron: from rust to multitasking catalysts. Chem Soc Rev 2021; 50:243-472. [DOI: 10.1039/d0cs00688b] [Citation(s) in RCA: 85] [Impact Index Per Article: 28.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The promising aspects of iron in synthetic chemistry are being explored for three-four decades as a green and eco-friendly alternative to late transition metals. This present review unveils these rich iron-chemistry towards different transformations.
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Affiliation(s)
- Sujoy Rana
- Department of Chemistry
- University of North Bengal
- Darjeeling
- India
| | | | - Sabarni Paul
- Department of Chemistry
- University of North Bengal
- Darjeeling
- India
| | - Aniruddha Paik
- Department of Chemistry
- University of North Bengal
- Darjeeling
- India
| | - Debabrata Maiti
- Department of Chemistry
- IIT Bombay
- Mumbai-400076
- India
- Tokyo Tech World Research Hub Initiative (WRHI)
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16
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Ni S, Hribersek M, Baddigam SK, Ingner FJL, Orthaber A, Gates PJ, Pilarski LT. Mechanochemical Solvent‐Free Catalytic C−H Methylation. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202010202] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Shengjun Ni
- Department of Chemistry—BMC Uppsala University Box 576 75123 Uppsala Sweden
| | - Matic Hribersek
- Department of Chemistry—BMC Uppsala University Box 576 75123 Uppsala Sweden
| | - Swarna K. Baddigam
- Department of Chemistry—BMC Uppsala University Box 576 75123 Uppsala Sweden
| | | | - Andreas Orthaber
- Department of Chemistry—Ångström Laboratories Uppsala University Box 523 75120 Uppsala Sweden
| | - Paul J. Gates
- School of Chemistry University of Bristol Cantock's Close, Clifton Bristol BS8 1TS UK
| | - Lukasz T. Pilarski
- Department of Chemistry—BMC Uppsala University Box 576 75123 Uppsala Sweden
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17
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Dodangeh M, Ramazani A, Maghsoodlou MT, Zarei A, Rezayati S. Application of Readily Available Metals for C-H Activation. CURR ORG CHEM 2020. [DOI: 10.2174/1385272824999200616114037] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Catalytic C-H activation is a powerful method for organic synthesis. In recent
years, scientists have made great progress by developing transitional metals for catalyzing CH
functionalization reaction. In this review, we summarized and highlighted recent progress
in C-H activation with copper, cobalt, iron, manganese, and nickel as catalysts.
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Affiliation(s)
- Mohammad Dodangeh
- Department of Chemistry, University of Zanjan, P.O. Box 45195-313, Zanjan, Iran
| | - Ali Ramazani
- Department of Chemistry, University of Zanjan, P.O. Box 45195-313, Zanjan, Iran
| | - Malek-Taher Maghsoodlou
- Department of Chemistry, The University of Sistan and Baluchestan, P.O. Box 98135-674, Zahedan, Iran
| | - Armin Zarei
- Department of Chemistry, University of Zanjan, P.O. Box 45195-313, Zanjan, Iran
| | - Sobhan Rezayati
- Department of Chemistry, University of Zanjan, P.O. Box 45195-313, Zanjan, Iran
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18
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C-Methylation of Organic Substrates: A Comprehensive Overview. Part II—Methyl Metals as Methylating Agents. CHEMISTRY AFRICA 2020. [DOI: 10.1007/s42250-020-00172-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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19
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Jagtap RA, Samal PP, Vinod CP, Krishnamurty S, Punji B. Iron-Catalyzed C(sp2)–H Alkylation of Indolines and Benzo[h]quinoline with Unactivated Alkyl Chlorides through Chelation Assistance. ACS Catal 2020. [DOI: 10.1021/acscatal.0c02030] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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20
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21
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Friis SD, Johansson MJ, Ackermann L. Cobalt-catalysed C-H methylation for late-stage drug diversification. Nat Chem 2020; 12:511-519. [PMID: 32472105 DOI: 10.1038/s41557-020-0475-7] [Citation(s) in RCA: 106] [Impact Index Per Article: 26.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2019] [Accepted: 04/24/2020] [Indexed: 01/01/2023]
Abstract
The magic methyl effect is well acknowledged in medicinal chemistry, but despite its significance, accessing such analogues via derivatization at a late stage remains a pivotal challenge. In an effort to mitigate this major limitation, we here present a strategy for the cobalt-catalysed late-stage C-H methylation of structurally complex drug molecules. Enabling broad applicability, the transformation relies on a boron-based methyl source and takes advantage of inherently present functional groups to guide the C-H activation. The relative reactivity observed for distinct classes of functionalities were determined and the sensitivity of the transformation towards a panel of common functional motifs was tested under various reaction conditions. Without the need for prefunctionalization or postdeprotection, a diverse array of marketed drug molecules and natural products could be methylated in a predictable manner. Subsequent physicochemical and biological testing confirmed the magnitude with which this seemingly minor structural change can affect important drug properties.
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Affiliation(s)
- Stig D Friis
- Medicinal Chemistry, Research and Early Development, Cardiovascular, Renal and Metabolism (CVRM), BioPharmaceuticals R&D, AstraZeneca, Gothenburg, Sweden
| | - Magnus J Johansson
- Medicinal Chemistry, Research and Early Development, Cardiovascular, Renal and Metabolism (CVRM), BioPharmaceuticals R&D, AstraZeneca, Gothenburg, Sweden.
| | - Lutz Ackermann
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen, Göttingen, Germany.
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22
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Lanzi M, Cera G. Iron-Catalyzed C-H Functionalizations under Triazole-Assistance. Molecules 2020; 25:E1806. [PMID: 32326406 PMCID: PMC7221773 DOI: 10.3390/molecules25081806] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Revised: 04/10/2020] [Accepted: 04/11/2020] [Indexed: 11/16/2022] Open
Abstract
3d transition metals-catalyzed C-H bond functionalizations represent nowadays an important tool in organic synthesis, appearing as the most promising alternative to cross-coupling reactions. Among 3d transition metals, iron found widespread application due to its availability and benign nature, and it was established as an efficient catalyst in organic synthesis. In this context, the use of ortho-orientating directing groups (DGs) turned out to be necessary for promoting selective iron-catalyzed C-H functionalization reactions. Very recently, triazoles DGs were demonstrated to be more than an excellent alternative to the commonly employed 8-aminoquinoline (AQ) DG, as a result of their modular synthesis as well as the mild reaction conditions applied for their removal. In addition, their tunable geometry and electronics allowed for new unprecedented reactivities in iron-catalyzed C-H activation methodologies that will be summarized within this review.
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Affiliation(s)
- Matteo Lanzi
- Laboratoire de Chemie Moléculaire (UMR CNRS 7509), Université de Strasbourg, ECPM 25 Rue Becquerel, 67087 Strasbourg, France;
| | - Gianpiero Cera
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale, Università di Parma, Parco Area delle Scienze 17/A, I-43124 Parma, Italy
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23
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Chen M, Doba T, Sato T, Razumkov H, Ilies L, Shang R, Nakamura E. Chromium(III)-Catalyzed C(sp 2)-H Alkynylation, Allylation, and Naphthalenation of Secondary Amides with Trimethylaluminum as Base. J Am Chem Soc 2020; 142:4883-4891. [PMID: 32068410 DOI: 10.1021/jacs.0c00127] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Among base metals used for C-H activation reactions, chromium(III) is rather unexplored despite its natural abundance and low toxicity. We report herein chromium(III)-catalyzed C(sp2)-H functionalization of an ortho-position of aromatic and α,β-unsaturated secondary amides using readily available AlMe3 as a base and using bromoalkynes, allyl bromide, and 1,4-dihydro-1,4-epoxynaphthalene as electrophiles. This redox-neutral reaction taking place at 70-90 °C, requires as low as 1-2 mol % of CrCl3 or Cr(acac)3 as a catalyst without any added ligand, and tolerates functional groups such as aryl iodide, boronate, and thiophene groups. Stoichiometric and kinetics studies as well as kinetic isotope effects suggest that the catalytic cycle consists of a series of thermally stable but reactive intermediates bearing two molecules of the amide substrate on one chromium atom and also that one of these chromate(III) complexes takes part in the alkynylation, allylation, and naphthalenation reactions. The proposed mechanism accounts for the effective suppression of methyl group delivery from AlMe3 for ortho-C-H methylation.
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Affiliation(s)
- Mengqing Chen
- Department of Chemistry, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Takahiro Doba
- Department of Chemistry, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Takenari Sato
- Department of Chemistry, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Hlib Razumkov
- Department of Chemistry, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Laurean Ilies
- Department of Chemistry, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Rui Shang
- Department of Chemistry, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Eiichi Nakamura
- Department of Chemistry, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
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24
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Rej S, Ano Y, Chatani N. Bidentate Directing Groups: An Efficient Tool in C-H Bond Functionalization Chemistry for the Expedient Construction of C-C Bonds. Chem Rev 2020; 120:1788-1887. [PMID: 31904219 DOI: 10.1021/acs.chemrev.9b00495] [Citation(s) in RCA: 587] [Impact Index Per Article: 146.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
During the past decades, synthetic organic chemistry discovered that directing group assisted C-H activation is a key tool for the expedient and siteselective construction of C-C bonds. Among the various directing group strategies, bidentate directing groups are now recognized as one of the most efficient devices for the selective functionalization of certain positions due to fact that its metal center permits fine, tunable, and reversible coordination. The family of bidentate directing groups permit various types of assistance to be achieved, such as N,N-dentate, N,O-dentate, and N,S-dentate auxiliaries, which are categorized based on the coordination site. In this review, we broadly discuss various C-H bond functionalization reactions for the formation of C-C bonds with the aid of bidentate directing groups.
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Affiliation(s)
- Supriya Rej
- Department of Applied Chemistry, Faculty of Engineering , Osaka University , Suita , Osaka 560-0871 , Japan
| | - Yusuke Ano
- Department of Applied Chemistry, Faculty of Engineering , Osaka University , Suita , Osaka 560-0871 , Japan
| | - Naoto Chatani
- Department of Applied Chemistry, Faculty of Engineering , Osaka University , Suita , Osaka 560-0871 , Japan
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25
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Jin S, Yao H, Lin S, You X, Yang Y, Yan Z. Peroxide-mediated site-specific C–H methylation of imidazo[1,2-a]pyridines and quinoxalin-2(1H)-ones under metal-free conditions. Org Biomol Chem 2020; 18:205-210. [DOI: 10.1039/c9ob02328c] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
An effective approach to realize the direct methylation of imidazo[1,2-a]pyridines and quinoxalin-2(1H)-ones with peroxides under metal-free conditions is described.
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Affiliation(s)
- Shengzhou Jin
- Department of Chemistry
- Nanchang University
- Nanchang
- P. R. China
| | - Hua Yao
- Department of Chemistry
- Nanchang University
- Nanchang
- P. R. China
| | - Sen Lin
- Department of Chemistry
- Nanchang University
- Nanchang
- P. R. China
| | - Xiaoqing You
- Department of Chemistry
- Nanchang University
- Nanchang
- P. R. China
| | - Yao Yang
- Department of Chemistry
- Nanchang University
- Nanchang
- P. R. China
| | - Zhaohua Yan
- Department of Chemistry
- Nanchang University
- Nanchang
- P. R. China
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26
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27
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Liu D, Yu L, Yu Y, Xia Z, Song Z, Liao L, Tan Z, Chen X. Nickel-Catalyzed Ortho
C-H Methylation of Aromatic Amides with Di-tert
-butyl Peroxide as Methylation Reagent. European J Org Chem 2019. [DOI: 10.1002/ejoc.201901211] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Da Liu
- State Key Laboratory of Chemo/Biosensing and Chemometrics; College of Chemistry and Chemical Engineering; Hunan University; 410082 Changsha P. R. China
- College of Chemistry and Chemical Engineering; Kamp Pharmaceuticals CO., LTD.; 415900 Changde P. R. China
| | - Lin Yu
- State Key Laboratory of Chemo/Biosensing and Chemometrics; College of Chemistry and Chemical Engineering; Hunan University; 410082 Changsha P. R. China
| | - Yongqi Yu
- State Key Laboratory of Chemo/Biosensing and Chemometrics; College of Chemistry and Chemical Engineering; Hunan University; 410082 Changsha P. R. China
| | - Zhen Xia
- State Key Laboratory of Chemo/Biosensing and Chemometrics; College of Chemistry and Chemical Engineering; Hunan University; 410082 Changsha P. R. China
| | - Zenan Song
- State Key Laboratory of Chemo/Biosensing and Chemometrics; College of Chemistry and Chemical Engineering; Hunan University; 410082 Changsha P. R. China
| | - Lihong Liao
- College of Chemistry and Chemical Engineering; Kamp Pharmaceuticals CO., LTD.; 415900 Changde P. R. China
| | - Ze Tan
- State Key Laboratory of Chemo/Biosensing and Chemometrics; College of Chemistry and Chemical Engineering; Hunan University; 410082 Changsha P. R. China
| | - Xiang Chen
- State Key Laboratory of Chemo/Biosensing and Chemometrics; College of Chemistry and Chemical Engineering; Hunan University; 410082 Changsha P. R. China
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28
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Yang T, Xia WJ, Zhou B, Xin Y, Shen Y, Li YM. The Cascade Methylation/Cyclization of ortho
-Cyanoarylacrylamides with Dicumyl Peroxide. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900918] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Tao Yang
- Faculty of Life Science and Technology; Kunming University of Science and Technology; 650500 Kunming P. R. China
| | - Wen-Jin Xia
- Faculty of Life Science and Technology; Kunming University of Science and Technology; 650500 Kunming P. R. China
| | - Bin Zhou
- Faculty of Life Science and Technology; Kunming University of Science and Technology; 650500 Kunming P. R. China
| | - Yangchun Xin
- Katzin Diagnostic & Research PET/MR Center; Nemours/Alfred I. DuPont Hospital for Children; 19803 Wilmington DE United States
| | - Yuehai Shen
- Faculty of Life Science and Technology; Kunming University of Science and Technology; 650500 Kunming P. R. China
| | - Ya-Min Li
- Faculty of Life Science and Technology; Kunming University of Science and Technology; 650500 Kunming P. R. China
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29
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Mo J, Müller T, Oliveira JCA, Demeshko S, Meyer F, Ackermann L. Eisenkatalysierte C‐H‐Aktivierung mit Propargylacetaten: Mechanistische Einblicke in Eisen(II) durch Experiment, Kinetik, Mössbauer‐Spektroskopie und Berechnung. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201904110] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Jiayu Mo
- Institut für Organische und Biomolekulare Chemie Georg-August-Universität Göttingen Tammannstraße 2 37077 Göttingen Deutschland
| | - Thomas Müller
- Institut für Organische und Biomolekulare Chemie Georg-August-Universität Göttingen Tammannstraße 2 37077 Göttingen Deutschland
| | - João C. A. Oliveira
- Institut für Organische und Biomolekulare Chemie Georg-August-Universität Göttingen Tammannstraße 2 37077 Göttingen Deutschland
| | - Serhiy Demeshko
- Institut für Anorganische Chemie Georg-August-Universität Göttingen Tammannstraße 4 37077 Göttingen Deutschland
| | - Franc Meyer
- Institut für Anorganische Chemie Georg-August-Universität Göttingen Tammannstraße 4 37077 Göttingen Deutschland
| | - Lutz Ackermann
- Institut für Organische und Biomolekulare Chemie Georg-August-Universität Göttingen Tammannstraße 2 37077 Göttingen Deutschland
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30
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Mo J, Müller T, Oliveira JCA, Demeshko S, Meyer F, Ackermann L. Iron-Catalyzed C-H Activation with Propargyl Acetates: Mechanistic Insights into Iron(II) by Experiment, Kinetics, Mössbauer Spectroscopy, and Computation. Angew Chem Int Ed Engl 2019; 58:12874-12878. [PMID: 31207070 PMCID: PMC7187192 DOI: 10.1002/anie.201904110] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2019] [Revised: 05/24/2019] [Indexed: 11/11/2022]
Abstract
An iron‐catalyzed C−H/N−H alkyne annulation was realized by using a customizable clickable triazole amide under exceedingly mild reaction conditions. A unifying mechanistic approach combining experiment, spectroscopy, kinetics, and computation provided strong support for facile C−H activation by a ligand‐to‐ligand hydrogen transfer (LLHT) mechanism. Combined Mössbauer spectroscopic analysis and DFT calculations were indicative of high‐spin iron(II) species as the key intermediates in the C−H activation manifold.
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Affiliation(s)
- Jiayu Mo
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen, Tammannstraße 2, 37077, Göttingen, Germany
| | - Thomas Müller
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen, Tammannstraße 2, 37077, Göttingen, Germany
| | - João C A Oliveira
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen, Tammannstraße 2, 37077, Göttingen, Germany
| | - Serhiy Demeshko
- Institut für Anorganische Chemie, Georg-August-Universität Göttingen, Tammannstraße 4, 37077, Göttingen, Germany
| | - Franc Meyer
- Institut für Anorganische Chemie, Georg-August-Universität Göttingen, Tammannstraße 4, 37077, Göttingen, Germany
| | - Lutz Ackermann
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen, Tammannstraße 2, 37077, Göttingen, Germany
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31
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Xu W, Yoshikai N. Iron-Catalyzed ortho C-H Arylation and Methylation of Pivalophenone N-H Imines. CHEMSUSCHEM 2019; 12:3049-3053. [PMID: 30786170 DOI: 10.1002/cssc.201900164] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2019] [Revised: 02/19/2019] [Indexed: 06/09/2023]
Abstract
Iron-catalyzed ortho C-H arylation and methylation reactions of pivalophenone N-H imines are reported. The pivaloyl N-H imine proved an excellent directing group for the arylation with diarylzinc reagents in the presence of an iron-diphosphine catalyst and 2,3-dichlorobutane at room temperature. A similar catalytic system also allowed methylation with Me3 Al at 70 °C. The pivaloyl imine of the product could be readily converted to a cyano group, thus allowing convenient preparation of ortho-functionalized benzonitriles.
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Affiliation(s)
- Wengang Xu
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore, 637371, Singapore
| | - Naohiko Yoshikai
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore, 637371, Singapore
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32
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Lv W, Wen S, Liu J, Cheng G. Palladium-Catalyzed ortho-C–H Methylation of Benzoic Acids. J Org Chem 2019; 84:9786-9791. [DOI: 10.1021/acs.joc.9b01204] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Weiwei Lv
- College of Materials Science & Engineering, Huaqiao University, Xiamen 361021, China
| | - Si Wen
- College of Materials Science & Engineering, Huaqiao University, Xiamen 361021, China
| | - Jing Liu
- College of Materials Science & Engineering, Huaqiao University, Xiamen 361021, China
| | - Guolin Cheng
- College of Materials Science & Engineering, Huaqiao University, Xiamen 361021, China
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33
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Kimura N, Kochi T, Kakiuchi F. Iron‐Catalyzed
Ortho
‐Selective C−H Alkylation of Aromatic Ketones with
N
‐Alkenylindoles and Partial Indolylation via 1,4‐Iron Migration. ASIAN J ORG CHEM 2019. [DOI: 10.1002/ajoc.201900209] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Naoki Kimura
- Department of ChemistryFaculty of Science and TechnologyKeio University 3-14-1 Hiyoshi, Kohoku-ku Yokohama 223-8522 Japan
| | - Takuya Kochi
- Department of ChemistryFaculty of Science and TechnologyKeio University 3-14-1 Hiyoshi, Kohoku-ku Yokohama 223-8522 Japan
| | - Fumitoshi Kakiuchi
- Department of ChemistryFaculty of Science and TechnologyKeio University 3-14-1 Hiyoshi, Kohoku-ku Yokohama 223-8522 Japan
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34
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Beyond Friedel and Crafts: Directed Alkylation of C−H Bonds in Arenes. Angew Chem Int Ed Engl 2019; 58:7202-7236. [DOI: 10.1002/anie.201806629] [Citation(s) in RCA: 69] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2018] [Revised: 08/13/2018] [Indexed: 11/07/2022]
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35
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Assembling of medium/long chain-based β-arylated unnatural amino acid derivatives via the Pd(II)-catalyzed sp3 β-C-H arylation and a short route for rolipram-type derivatives. Tetrahedron 2019. [DOI: 10.1016/j.tet.2019.03.018] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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36
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One-pot, solvent-free Pd(II)-catalyzed direct β-C-H arylation of carboxamides involving anhydrides as substrates via in situ installation of directing group. Tetrahedron 2019. [DOI: 10.1016/j.tet.2019.01.042] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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37
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Evano G, Theunissen C. Jenseits von Friedel und Crafts: dirigierte Alkylierung von C‐H‐Bindungen in Arenen. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201806629] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Gwilherm Evano
- Laboratoire de Chimie OrganiqueService de Chimie et Physico-Chimie OrganiquesUniversité libre de Bruxelles (ULB) Avenue F.D. Roosevelt 50, CP160/06 1050 Brüssel Belgien
| | - Cédric Theunissen
- Laboratoire de Chimie OrganiqueService de Chimie et Physico-Chimie OrganiquesUniversité libre de Bruxelles (ULB) Avenue F.D. Roosevelt 50, CP160/06 1050 Brüssel Belgien
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38
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Gong X, Wang M, Ye S, Wu J. Synthesis of 3-(Methylsulfonyl)benzo[ b]thiophenes from Methyl(2-alkynylphenyl)sulfanes and Sodium Metabisulfite via a Radical Relay Strategy. Org Lett 2019; 21:1156-1160. [PMID: 30698982 DOI: 10.1021/acs.orglett.9b00100] [Citation(s) in RCA: 66] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
A radical relay strategy for the generation of 3-(methylsulfonyl)benzo[ b]thiophenes through a reaction of methyl(2-alkynylphenyl)sulfanes with sodium metabisulfite in the presence of a photocatalyst under visible light irradiation is developed. This photoinduced sulfonylation proceeds efficiently under mild conditions by using a catalytic amount of sodium methylsulfinate as an initiator. During the reaction process, the methyl radical generated in situ is the key intermediate, which undergoes a radical relay with the combination of sulfur dioxide to afford methylsulfonyl-containing compounds.
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Affiliation(s)
- Xinxing Gong
- Institute for Advanced Studies , Taizhou University , 1139 Shifu Avenue , Taizhou 318000 , China.,Department of Chemistry , Fudan University , 2005 Songhu Road , Shanghai 200438 , China
| | - Mengjiao Wang
- Department of Chemistry , Fudan University , 2005 Songhu Road , Shanghai 200438 , China
| | - Shengqing Ye
- Institute for Advanced Studies , Taizhou University , 1139 Shifu Avenue , Taizhou 318000 , China
| | - Jie Wu
- Institute for Advanced Studies , Taizhou University , 1139 Shifu Avenue , Taizhou 318000 , China.,Department of Chemistry , Fudan University , 2005 Songhu Road , Shanghai 200438 , China
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39
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Loup J, Parchomyk T, Lülf S, Demeshko S, Meyer F, Koszinowski K, Ackermann L. Mössbauer and mass spectrometry support for iron(ii) catalysts in enantioselective C–H activation. Dalton Trans 2019; 48:5135-5139. [DOI: 10.1039/c9dt00705a] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
A combination of electrospray-ionization mass spectrometry and Mössbauer spectroscopy was used to investigate the species generated in situ in highly enantioselective Fe/NHC-catalyzed C–H alkylations.
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Affiliation(s)
- Joachim Loup
- Institut für Organische und Biomolekulare Chemie
- Universität Göttingen
- 37077 Göttingen
- Germany
| | - Tobias Parchomyk
- Institut für Organische und Biomolekulare Chemie
- Universität Göttingen
- 37077 Göttingen
- Germany
| | - Stefan Lülf
- Institut für Organische und Biomolekulare Chemie
- Universität Göttingen
- 37077 Göttingen
- Germany
| | - Serhiy Demeshko
- Institut für Anorganische Chemie
- Universität Göttingen
- 37077 Göttingen
- Germany
| | - Franc Meyer
- Institut für Anorganische Chemie
- Universität Göttingen
- 37077 Göttingen
- Germany
| | - Konrad Koszinowski
- Institut für Organische und Biomolekulare Chemie
- Universität Göttingen
- 37077 Göttingen
- Germany
| | - Lutz Ackermann
- Institut für Organische und Biomolekulare Chemie
- Universität Göttingen
- 37077 Göttingen
- Germany
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40
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Zheng J, Liu Z, Jin X, Dang Y. Unveiling the mechanism and regioselectivity of iron-dipyrrinato-catalyzed intramolecular C(sp3)–H amination of alkyl azides. Catal Sci Technol 2019. [DOI: 10.1039/c8cy02479k] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The mechanism of iron-catalyzed C(sp3)–H amination was established, in which regioselectivity arose from both radical stability and ring strain.
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Affiliation(s)
- Jia Zheng
- Department of Chemistry
- Tianjin Key Laboratory of Molecular Optoelectronic Sciences
- Tianjin University, and Collaborative Innovation Center of Chemical Science and Engineering
- Tianjin 300072
- China
| | - Zheyuan Liu
- Department of Chemistry
- Tianjin Key Laboratory of Molecular Optoelectronic Sciences
- Tianjin University, and Collaborative Innovation Center of Chemical Science and Engineering
- Tianjin 300072
- China
| | - Xiaojiao Jin
- Department of Chemistry
- Tianjin Key Laboratory of Molecular Optoelectronic Sciences
- Tianjin University, and Collaborative Innovation Center of Chemical Science and Engineering
- Tianjin 300072
- China
| | - Yanfeng Dang
- Department of Chemistry
- Tianjin Key Laboratory of Molecular Optoelectronic Sciences
- Tianjin University, and Collaborative Innovation Center of Chemical Science and Engineering
- Tianjin 300072
- China
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41
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Chen Y. Recent Advances in Methylation: A Guide for Selecting Methylation Reagents. Chemistry 2018; 25:3405-3439. [DOI: 10.1002/chem.201803642] [Citation(s) in RCA: 119] [Impact Index Per Article: 19.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2018] [Indexed: 11/10/2022]
Affiliation(s)
- Yantao Chen
- Medicinal Chemistry, Cardiovascular, Renal and Metabolism, IMED Biotech UnitAstraZeneca Gothenburg Sweden
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42
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Gandeepan P, Müller T, Zell D, Cera G, Warratz S, Ackermann L. 3d Transition Metals for C-H Activation. Chem Rev 2018; 119:2192-2452. [PMID: 30480438 DOI: 10.1021/acs.chemrev.8b00507] [Citation(s) in RCA: 1441] [Impact Index Per Article: 240.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
C-H activation has surfaced as an increasingly powerful tool for molecular sciences, with notable applications to material sciences, crop protection, drug discovery, and pharmaceutical industries, among others. Despite major advances, the vast majority of these C-H functionalizations required precious 4d or 5d transition metal catalysts. Given the cost-effective and sustainable nature of earth-abundant first row transition metals, the development of less toxic, inexpensive 3d metal catalysts for C-H activation has gained considerable recent momentum as a significantly more environmentally-benign and economically-attractive alternative. Herein, we provide a comprehensive overview on first row transition metal catalysts for C-H activation until summer 2018.
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Affiliation(s)
- Parthasarathy Gandeepan
- Institut für Organische und Biomolekulare Chemie , Georg-August-Universität Göttingen , Tammannstraße 2 , 37077 Göttingen , Germany
| | - Thomas Müller
- Institut für Organische und Biomolekulare Chemie , Georg-August-Universität Göttingen , Tammannstraße 2 , 37077 Göttingen , Germany
| | - Daniel Zell
- Institut für Organische und Biomolekulare Chemie , Georg-August-Universität Göttingen , Tammannstraße 2 , 37077 Göttingen , Germany
| | - Gianpiero Cera
- Institut für Organische und Biomolekulare Chemie , Georg-August-Universität Göttingen , Tammannstraße 2 , 37077 Göttingen , Germany
| | - Svenja Warratz
- Institut für Organische und Biomolekulare Chemie , Georg-August-Universität Göttingen , Tammannstraße 2 , 37077 Göttingen , Germany
| | - Lutz Ackermann
- Institut für Organische und Biomolekulare Chemie , Georg-August-Universität Göttingen , Tammannstraße 2 , 37077 Göttingen , Germany
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43
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Wang W, Lorion MM, Shah J, Kapdi AR, Ackermann L. Late-Stage Peptide Diversification by Position-Selective C−H Activation. Angew Chem Int Ed Engl 2018; 57:14700-14717. [DOI: 10.1002/anie.201806250] [Citation(s) in RCA: 212] [Impact Index Per Article: 35.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2018] [Revised: 06/28/2018] [Indexed: 12/20/2022]
Affiliation(s)
- Wei Wang
- Institut für Organische und Biomolekulare Chemie; Georg-August-Universität; Tammannstraße 2 37077 Göttingen Germany
| | - Mélanie M. Lorion
- Institut für Organische und Biomolekulare Chemie; Georg-August-Universität; Tammannstraße 2 37077 Göttingen Germany
| | - Jagrut Shah
- Department of Chemistry; Institute of Chemical Technology; Nathalal Parekh Road, Matunga Mumbai- 400019 India
| | - Anant R. Kapdi
- Department of Chemistry; Institute of Chemical Technology; Nathalal Parekh Road, Matunga Mumbai- 400019 India
| | - Lutz Ackermann
- Institut für Organische und Biomolekulare Chemie; Georg-August-Universität; Tammannstraße 2 37077 Göttingen Germany
- Department of Chemistry; University of Pavia; Viale Taramelli, 10 27100 Pavia Italy
- DZHK (German Centre for Cardiovascular Research); Germany
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44
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Wang W, Lorion MM, Shah J, Kapdi AR, Ackermann L. Peptid-Diversifizierung durch positionsselektive C-H-Aktivierung im späten Synthesestadium. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201806250] [Citation(s) in RCA: 67] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Wei Wang
- Institut für Organische und Biomolekulare Chemie; Georg-August-Universität; Tammannstraße 2 37077 Göttingen Deutschland
| | - Mélanie M. Lorion
- Institut für Organische und Biomolekulare Chemie; Georg-August-Universität; Tammannstraße 2 37077 Göttingen Deutschland
| | - Jagrut Shah
- Department of Chemistry; Institute of Chemical Technology; Nathalal Parekh Road, Matunga Mumbai- 400019 Indien
| | - Anant R. Kapdi
- Department of Chemistry; Institute of Chemical Technology; Nathalal Parekh Road, Matunga Mumbai- 400019 Indien
| | - Lutz Ackermann
- Institut für Organische und Biomolekulare Chemie; Georg-August-Universität; Tammannstraße 2 37077 Göttingen Deutschland
- Department of Chemistry; University of Pavia; Viale Taramelli, 10 27100 Pavia Italien
- DZHK (Deutsches Zentrum für Herz-Kreislauf-Forschung); Deutschland
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45
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Zhang G, Zhu J, Ding C. Pharmaceutical-Oriented Iron-Catalyzed Ethoxylation of Aryl C(sp
2
)-H Bonds with Cobalt Co-Catalyst. ChemistrySelect 2018. [DOI: 10.1002/slct.201801881] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Guofu Zhang
- College of Chemical Engineering; Zhejiang University of Technology; Hangzhou 310014, People's Republic of China
| | - Jianfei Zhu
- College of Chemical Engineering; Zhejiang University of Technology; Hangzhou 310014, People's Republic of China
| | - Chengrong Ding
- College of Chemical Engineering; Zhejiang University of Technology; Hangzhou 310014, People's Republic of China
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46
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Sambiagio C, Schönbauer D, Blieck R, Dao-Huy T, Pototschnig G, Schaaf P, Wiesinger T, Zia MF, Wencel-Delord J, Besset T, Maes BUW, Schnürch M. A comprehensive overview of directing groups applied in metal-catalysed C-H functionalisation chemistry. Chem Soc Rev 2018; 47:6603-6743. [PMID: 30033454 PMCID: PMC6113863 DOI: 10.1039/c8cs00201k] [Citation(s) in RCA: 1105] [Impact Index Per Article: 184.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2018] [Indexed: 12/20/2022]
Abstract
The present review is devoted to summarizing the recent advances (2015-2017) in the field of metal-catalysed group-directed C-H functionalisation. In order to clearly showcase the molecular diversity that can now be accessed by means of directed C-H functionalisation, the whole is organized following the directing groups installed on a substrate. Its aim is to be a comprehensive reference work, where a specific directing group can be easily found, together with the transformations which have been carried out with it. Hence, the primary format of this review is schemes accompanied with a concise explanatory text, in which the directing groups are ordered in sections according to their chemical structure. The schemes feature typical substrates used, the products obtained as well as the required reaction conditions. Importantly, each example is commented on with respect to the most important positive features and drawbacks, on aspects such as selectivity, substrate scope, reaction conditions, directing group removal, and greenness. The targeted readership are both experts in the field of C-H functionalisation chemistry (to provide a comprehensive overview of the progress made in the last years) and, even more so, all organic chemists who want to introduce the C-H functionalisation way of thinking for a design of straightforward, efficient and step-economic synthetic routes towards molecules of interest to them. Accordingly, this review should be of particular interest also for scientists from industrial R&D sector. Hence, the overall goal of this review is to promote the application of C-H functionalisation reactions outside the research groups dedicated to method development and establishing it as a valuable reaction archetype in contemporary R&D, comparable to the role cross-coupling reactions play to date.
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Affiliation(s)
- Carlo Sambiagio
- Organic Synthesis (ORSY)
, Department of Chemistry
, University of Antwerp
,
Groenenborgerlaan 171
, 2020 Antwerp
, Belgium
| | - David Schönbauer
- Institute of Applied Synthetic Chemistry
, TU Wien
,
Getreidemarkt 9/163
, A-1060 Vienna
, Austria
.
| | - Remi Blieck
- Normandie Univ
, INSA Rouen
, UNIROUEN
, CNRS
, COBRA (UMR 6014)
,
76000 Rouen
, France
| | - Toan Dao-Huy
- Institute of Applied Synthetic Chemistry
, TU Wien
,
Getreidemarkt 9/163
, A-1060 Vienna
, Austria
.
| | - Gerit Pototschnig
- Institute of Applied Synthetic Chemistry
, TU Wien
,
Getreidemarkt 9/163
, A-1060 Vienna
, Austria
.
| | - Patricia Schaaf
- Institute of Applied Synthetic Chemistry
, TU Wien
,
Getreidemarkt 9/163
, A-1060 Vienna
, Austria
.
| | - Thomas Wiesinger
- Institute of Applied Synthetic Chemistry
, TU Wien
,
Getreidemarkt 9/163
, A-1060 Vienna
, Austria
.
| | - Muhammad Farooq Zia
- Institute of Applied Synthetic Chemistry
, TU Wien
,
Getreidemarkt 9/163
, A-1060 Vienna
, Austria
.
| | - Joanna Wencel-Delord
- Laboratoire de Chimie Moléculaire (UMR CNRS 7509)
, Université de Strasbourg
,
ECPM 25 Rue Becquerel
, 67087 Strasbourg
, France
| | - Tatiana Besset
- Normandie Univ
, INSA Rouen
, UNIROUEN
, CNRS
, COBRA (UMR 6014)
,
76000 Rouen
, France
| | - Bert U. W. Maes
- Organic Synthesis (ORSY)
, Department of Chemistry
, University of Antwerp
,
Groenenborgerlaan 171
, 2020 Antwerp
, Belgium
| | - Michael Schnürch
- Institute of Applied Synthetic Chemistry
, TU Wien
,
Getreidemarkt 9/163
, A-1060 Vienna
, Austria
.
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47
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Guerrero I, Correa A. Metal-Catalyzed C-H Functionalization Processes with “Click”-Triazole Assistance. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800790] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Itziar Guerrero
- Department of Organic Chemistry I; University of the Basque Country (UPV/EHU); Joxe Mari Korta R&D Center, Avda. Tolosa 72 20018 Donostia-San Sebastián Spain
| | - Arkaitz Correa
- Department of Organic Chemistry I; University of the Basque Country (UPV/EHU); Joxe Mari Korta R&D Center, Avda. Tolosa 72 20018 Donostia-San Sebastián Spain
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48
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Serpier F, Pan F, Ham WS, Jacq J, Genicot C, Ritter T. Selective Methylation of Arenes: A Radical C−H Functionalization/Cross‐Coupling Sequence. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201804628] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Fabien Serpier
- Department Max-Planck-Institut für Kohlenforschung Kaiser-Wilhelm-Platz 1 45470 Mülheim an der Ruhr Germany
| | - Fei Pan
- Department Max-Planck-Institut für Kohlenforschung Kaiser-Wilhelm-Platz 1 45470 Mülheim an der Ruhr Germany
| | - Won Seok Ham
- Department Max-Planck-Institut für Kohlenforschung Kaiser-Wilhelm-Platz 1 45470 Mülheim an der Ruhr Germany
- Department of Chemistry and Chemical BiologyHarvard University 12 Oxford Street Cambridge MA 02138 USA
| | - Jérôme Jacq
- Global ChemistryUCB MedicinesUCB Biopharma Braine-L'Alleud 1420 Belgium
| | | | - Tobias Ritter
- Department Max-Planck-Institut für Kohlenforschung Kaiser-Wilhelm-Platz 1 45470 Mülheim an der Ruhr Germany
- Department of Chemistry and Chemical BiologyHarvard University 12 Oxford Street Cambridge MA 02138 USA
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49
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Serpier F, Pan F, Ham WS, Jacq J, Genicot C, Ritter T. Selective Methylation of Arenes: A Radical C−H Functionalization/Cross‐Coupling Sequence. Angew Chem Int Ed Engl 2018; 57:10697-10701. [DOI: 10.1002/anie.201804628] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2018] [Indexed: 12/29/2022]
Affiliation(s)
- Fabien Serpier
- Department Max-Planck-Institut für Kohlenforschung Kaiser-Wilhelm-Platz 1 45470 Mülheim an der Ruhr Germany
| | - Fei Pan
- Department Max-Planck-Institut für Kohlenforschung Kaiser-Wilhelm-Platz 1 45470 Mülheim an der Ruhr Germany
| | - Won Seok Ham
- Department Max-Planck-Institut für Kohlenforschung Kaiser-Wilhelm-Platz 1 45470 Mülheim an der Ruhr Germany
- Department of Chemistry and Chemical BiologyHarvard University 12 Oxford Street Cambridge MA 02138 USA
| | - Jérôme Jacq
- Global ChemistryUCB MedicinesUCB Biopharma Braine-L'Alleud 1420 Belgium
| | | | - Tobias Ritter
- Department Max-Planck-Institut für Kohlenforschung Kaiser-Wilhelm-Platz 1 45470 Mülheim an der Ruhr Germany
- Department of Chemistry and Chemical BiologyHarvard University 12 Oxford Street Cambridge MA 02138 USA
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50
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Mo J, Müller T, Oliveira JCA, Ackermann L. 1,4-Iron Migration for Expedient Allene Annulations through Iron-Catalyzed C−H/N−H/C−O/C−H Functionalizations. Angew Chem Int Ed Engl 2018; 57:7719-7723. [DOI: 10.1002/anie.201801324] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Revised: 03/29/2018] [Indexed: 01/08/2023]
Affiliation(s)
- Jiayu Mo
- Institut für Organische und Biomolekulare Chemie; Georg-August-Universität Göttingen; Tammannstraße 2 37077 Göttingen Germany
| | - Thomas Müller
- Institut für Organische und Biomolekulare Chemie; Georg-August-Universität Göttingen; Tammannstraße 2 37077 Göttingen Germany
| | - João C. A. Oliveira
- Institut für Organische und Biomolekulare Chemie; Georg-August-Universität Göttingen; Tammannstraße 2 37077 Göttingen Germany
| | - Lutz Ackermann
- Institut für Organische und Biomolekulare Chemie; Georg-August-Universität Göttingen; Tammannstraße 2 37077 Göttingen Germany
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