1
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Jia X, Xing D, Shen J, Li B, Zeng Y, Jiang H, Huang L. 1,2,3-Thiadiazole as a Modifiable and Scalable Directing Group for ortho-C-H Functionalization. Org Lett 2024; 26:1544-1549. [PMID: 38358975 DOI: 10.1021/acs.orglett.3c04075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2024]
Abstract
In the last few decades, directed C-H bond functionalization has had enormous applicability in academia and industry. The development of a novel, readily accessible, and scalable directing group with modifiable ability is highly desirable in C-H functionalization. Herein, we report the 1,2,3-thiadiazole as a modifiable directing group for C-H amidation and alkynylation with dioxazolones, p-toluenesulfonyl azide, and bromoalkynes in high yield. The densely functionalized 1,2,3-thiadiazole products are modified into thioamide, multisubstituted furan, γ-thiapyrone, thiazole, and various alkynyl sulfides through simple and one-step reactions. The competition experiments reveal that the directing ability of 1,2,3-thiadiazole is slightly weaker than pyridine and bidentate amide but stronger than the widely used carboxylate.
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Affiliation(s)
- Xiaoyan Jia
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, China
| | - Donghui Xing
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, China
| | - Jiayi Shen
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, China
| | - Bo Li
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, China
| | - Yue Zeng
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, China
| | - Huanfeng Jiang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, China
| | - Liangbin Huang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, China
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2
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Das A, Mandal R, Ravi Sankar HS, Kumaran S, Premkumar JR, Borah D, Sundararaju B. Reversal of Regioselectivity in Asymmetric C-H Bond Annulation with Bromoalkynes under Cobalt Catalysis. Angew Chem Int Ed Engl 2024; 63:e202315005. [PMID: 38095350 DOI: 10.1002/anie.202315005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Indexed: 12/30/2023]
Abstract
Metal-catalyzed asymmetric C-H bond annulation strategy offers a versatile platform, allowing the construction of complex P-chiral molecules through atom- and step-economical fashion. However, regioselective insertion of π-coupling partner between M-C bond with high enantio-induction remain elusive. Using commercially available Co(II) salt and chiral-Salox ligands, we demonstrate an unusual protocol for the regio-reversal, enantioselective C-H bond annulation of phosphinamide with bromoalkyne through desymmetrization. The reaction proceeds through ligand-assisted enantiodetermining cyclocobaltation followed by regioselective insertion of bromoalkyne between Co-C, subsequent reductive elimination, and halogen exchange with carboxylate resulted in P-stereogenic compounds in excellent ee (up to >99 %). The isolation of cobaltacycle involved in the catalytic cycle and the outcome of control experiments provide support for a plausible mechanism.
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Affiliation(s)
- Abir Das
- Department of Chemistry, Indian Institution of Technology Kanpur, 208016, Kanpur, Uttar Pradesh, India
| | - Rajib Mandal
- Department of Chemistry, Indian Institution of Technology Kanpur, 208016, Kanpur, Uttar Pradesh, India
| | | | - Subramani Kumaran
- Department of Chemistry, Indian Institution of Technology Kanpur, 208016, Kanpur, Uttar Pradesh, India
| | - J Richard Premkumar
- PG & Research Department of Chemistry, Bishop Heber College, 620017, Tiruchirappalli, Tamil Nadu, India
| | - Dipanti Borah
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, 400076, Mumbai, Maharashtra, India
| | - Basker Sundararaju
- Department of Chemistry, Indian Institution of Technology Kanpur, 208016, Kanpur, Uttar Pradesh, India
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3
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Wang Y, Dana S, Long H, Xu Y, Li Y, Kaplaneris N, Ackermann L. Electrochemical Late-Stage Functionalization. Chem Rev 2023; 123:11269-11335. [PMID: 37751573 PMCID: PMC10571048 DOI: 10.1021/acs.chemrev.3c00158] [Citation(s) in RCA: 17] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2023] [Indexed: 09/28/2023]
Abstract
Late-stage functionalization (LSF) constitutes a powerful strategy for the assembly or diversification of novel molecular entities with improved physicochemical or biological activities. LSF can thus greatly accelerate the development of medicinally relevant compounds, crop protecting agents, and functional materials. Electrochemical molecular synthesis has emerged as an environmentally friendly platform for the transformation of organic compounds. Over the past decade, electrochemical late-stage functionalization (eLSF) has gained major momentum, which is summarized herein up to February 2023.
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Affiliation(s)
| | | | | | - Yang Xu
- Institut für Organische
und Biomolekulare Chemie and Wöhler Research Institute for
Sustainable Chemistry (WISCh), Georg-August-Universität, Göttingen 37077, Germany
| | - Yanjun Li
- Institut für Organische
und Biomolekulare Chemie and Wöhler Research Institute for
Sustainable Chemistry (WISCh), Georg-August-Universität, Göttingen 37077, Germany
| | - Nikolaos Kaplaneris
- Institut für Organische
und Biomolekulare Chemie and Wöhler Research Institute for
Sustainable Chemistry (WISCh), Georg-August-Universität, Göttingen 37077, Germany
| | - Lutz Ackermann
- Institut für Organische
und Biomolekulare Chemie and Wöhler Research Institute for
Sustainable Chemistry (WISCh), Georg-August-Universität, Göttingen 37077, Germany
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4
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Baghel AS, Pratap R, Kumar A. Ru(II)-Catalyzed Weakly Coordinating Carbonyl-Assisted Dialkynylation of (Hetero)Aryl Ketones. J Org Chem 2023. [PMID: 37307505 DOI: 10.1021/acs.joc.3c00478] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Functionalized aryl(heteroaryl) ketones are present in many natural products as key structural components and serve as basic synthetic building blocks for various organic transformation reactions. Therefore, the development of an effective and sustainable route for making these classes of compounds remains challenging yet highly desirable. Herein, we report a simple and efficient catalytic system for dialkynylation of aromatic/heteroaromatic ketones via a double C-H bond activation in the presence of less expensive ruthenium(II)-salt as a catalyst using the weakly and native carbonyl group as the desired directing group. The developed protocol is highly compatible, tolerant, and sustainable toward various functional groups. The synthetic utility of the developed protocol has been demonstrated through the scale-up synthesis and functional group transformation. Control experiments support the involvement of the base-assisted internal electrophilic substitution (BIES) reaction pathway.
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Affiliation(s)
- Akanksha Singh Baghel
- Department of Chemistry, Indian Institute of Technology Patna, Patna 801106, Bihar, India
| | - Ramendra Pratap
- Department of Chemistry, Delhi University, Delhi 110007, India
| | - Amit Kumar
- Department of Chemistry, Indian Institute of Technology Patna, Patna 801106, Bihar, India
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5
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Singhal R, Choudhary SP, Malik B, Pilania M. Cyclic diaryliodonium salts: applications and overview. Org Biomol Chem 2023; 21:4358-4378. [PMID: 37161758 DOI: 10.1039/d3ob00134b] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Owing to the recent renewed interest and groundbreaking advances in hypervalent chemistry, cyclic diaryliodonium salts have had a myriad of unique applications in the past decade. Their numerous properties, such as an efficient dual arylation mechanism, straightforward one-pot synthesis compatibility, wide substrate scope, and functionalization tolerance, have made them appropriate starting materials for many bioactive compounds. Fluorenes, thiophenes, carbazoles, phenanthrenes, and many other useful cyclic bioactive molecules that are essential for pharmaceutical synthesis can be readily accessed from cyclic diaryliodonium salts. Particular focus has been given to the high optical activity and good enantiomeric excess of the products that facilitate the easy formation of many difficult-to-obtain optical isomers, such as atropisomers. This review aims to compile and summarize all the recent advances in synthesizing methodologies to prepare the important compounds where cyclic diaryliodonium salt is an integral part of the methodologies and would hopefully provide a good foundation for further research on this topic.
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Affiliation(s)
- Rakshanda Singhal
- Department of Chemistry, Manipal University Jaipur, Jaipur, VPO-Dehmi-Kalan, Off Jaipur-Ajmer Express Way, Jaipur, Rajasthan, 303007, India.
| | - Satya Prakash Choudhary
- Department of Chemistry, Manipal University Jaipur, Jaipur, VPO-Dehmi-Kalan, Off Jaipur-Ajmer Express Way, Jaipur, Rajasthan, 303007, India.
| | - Babita Malik
- Department of Chemistry, Manipal University Jaipur, Jaipur, VPO-Dehmi-Kalan, Off Jaipur-Ajmer Express Way, Jaipur, Rajasthan, 303007, India.
| | - Meenakshi Pilania
- Department of Chemistry, Manipal University Jaipur, Jaipur, VPO-Dehmi-Kalan, Off Jaipur-Ajmer Express Way, Jaipur, Rajasthan, 303007, India.
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6
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Zhang Q, Huang X, Gui Y, He Y, Liao S, Huang G, Liang T, Zhang Z. Unlocking Regiodivergence in Pd II- and Rh III-Mediated Site-Selective C-H Bond Alkynylation of Imidazopyridines. Org Lett 2023; 25:1447-1452. [PMID: 36826371 DOI: 10.1021/acs.orglett.3c00178] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/25/2023]
Abstract
An efficient PdII- and RhIII-controlled site-selective C-H bond alkynylation of imidazopyridines using (bromoethynyl)triisopropylsilane is disclosed. The divergent methodology allows straightforward access to a wide range of products alkynylated at the C3 and ortho positions. This strategy is suggestive of a practical platform that can be suitable for late-stage diversification and may assist in the design of more selective and complementary catalytic systems.
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Affiliation(s)
- Qiang Zhang
- Guangxi Key Laboratory of Electrochemical Energy Materials, School of Chemistry and Chemical Engineering, Guangxi University, Nanning, Guangxi 530004, China
| | - Xuecong Huang
- Guangxi Key Laboratory of Electrochemical Energy Materials, School of Chemistry and Chemical Engineering, Guangxi University, Nanning, Guangxi 530004, China
| | - Yuting Gui
- Guangxi Key Laboratory of Electrochemical Energy Materials, School of Chemistry and Chemical Engineering, Guangxi University, Nanning, Guangxi 530004, China
| | - Youyuan He
- Guangxi Key Laboratory of Electrochemical Energy Materials, School of Chemistry and Chemical Engineering, Guangxi University, Nanning, Guangxi 530004, China
| | - Siyang Liao
- Guangxi Key Laboratory of Electrochemical Energy Materials, School of Chemistry and Chemical Engineering, Guangxi University, Nanning, Guangxi 530004, China
| | - Guan Huang
- Guangxi Key Laboratory of Electrochemical Energy Materials, School of Chemistry and Chemical Engineering, Guangxi University, Nanning, Guangxi 530004, China
| | - Taoyuan Liang
- Guangxi Key Laboratory of Electrochemical Energy Materials, School of Chemistry and Chemical Engineering, Guangxi University, Nanning, Guangxi 530004, China
| | - Zhuan Zhang
- Guangxi Key Laboratory of Electrochemical Energy Materials, School of Chemistry and Chemical Engineering, Guangxi University, Nanning, Guangxi 530004, China
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7
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Le Du E, Waser J. Recent progress in alkynylation with hypervalent iodine reagents. Chem Commun (Camb) 2023; 59:1589-1604. [PMID: 36656618 PMCID: PMC9904279 DOI: 10.1039/d2cc06168f] [Citation(s) in RCA: 15] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Accepted: 12/23/2022] [Indexed: 01/20/2023]
Abstract
Although alkynes are one of the smallest functional groups, they are among the most versatile building blocks for organic chemistry, with applications ranging from biochemistry to material sciences. Alkynylation reactions have traditionally relied on the use of acetylenes as nucleophiles. The discovery and development of ethynyl hypervalent iodine reagents have allowed to greatly expand the transfer of alkynes as electrophilic synthons. In this feature article the progress in the field since 2018 will be presented. After a short introduction on alkynylation reactions and hypervalent iodine reagents, the developments in the synthesis of alkynyl hypervalent iodine reagents will be discussed. Their recent use in base-mediated and transition-metal catalyzed alkynylations will be described. Progress in radical-based alkynylations and atom-economical transformations will then be presented.
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Affiliation(s)
- Eliott Le Du
- Laboratory of Catalysis and Organic Synthesis, Institute of Chemical Sciences and Engineering École Polytechnique Fédérale de Lausanne EPFL, SB ISIC, LCSO, BCH 4306, 1015, Lausanne, Switzerland.
| | - Jérôme Waser
- Laboratory of Catalysis and Organic Synthesis, Institute of Chemical Sciences and Engineering École Polytechnique Fédérale de Lausanne EPFL, SB ISIC, LCSO, BCH 4306, 1015, Lausanne, Switzerland.
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8
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Spils J, Wirth T, Nachtsheim BJ. Two-step continuous-flow synthesis of 6-membered cyclic iodonium salts via anodic oxidation. Beilstein J Org Chem 2023; 19:27-32. [PMID: 36686040 PMCID: PMC9830492 DOI: 10.3762/bjoc.19.2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Accepted: 12/07/2022] [Indexed: 01/04/2023] Open
Abstract
We describe a multi-step continuous-flow procedure for the generation of six-membered diaryliodonium salts. The accompanying scalability and atom economy are significant improvements to existing batch methods. Benzyl acetates are submitted to this two-step procedure as highly available and cheap starting materials. An acid-catalyzed Friedel-Crafts alkylation followed by an anodic oxidative cyclization yielded a defined set of cyclic iodonium salts in a highly substrate-dependent yield.
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Affiliation(s)
- Julian Spils
- Institute for Organic and Analytical Chemistry, University of Bremen, Leobener Straße 7, 28359 Bremen, Germany
| | - Thomas Wirth
- School of Chemistry, Cardiff University, Park Place, Main Building, Cardiff CF10 3AT, UK
| | - Boris J Nachtsheim
- Institute for Organic and Analytical Chemistry, University of Bremen, Leobener Straße 7, 28359 Bremen, Germany
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9
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Lu MZ, Goh J, Maraswami M, Jia Z, Tian JS, Loh TP. Recent Advances in Alkenyl sp 2 C-H and C-F Bond Functionalizations: Scope, Mechanism, and Applications. Chem Rev 2022; 122:17479-17646. [PMID: 36240299 DOI: 10.1021/acs.chemrev.2c00032] [Citation(s) in RCA: 44] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Alkenes and their derivatives are featured widely in a variety of natural products, pharmaceuticals, and advanced materials. Significant efforts have been made toward the development of new and practical methods to access this important class of compounds by selectively activating the alkenyl C(sp2)-H bonds in recent years. In this comprehensive review, we describe the state-of-the-art strategies for the direct functionalization of alkenyl sp2 C-H and C-F bonds until June 2022. Moreover, metal-free, photoredox, and electrochemical strategies are also covered. For clarity, this review has been divided into two parts; the first part focuses on currently available alkenyl sp2 C-H functionalization methods using different alkene derivatives as the starting materials, and the second part describes the alkenyl sp2 C-F bond functionalization using easily accessible gem-difluoroalkenes as the starting material. This review includes the scope, limitations, mechanistic studies, stereoselective control (using directing groups as well as metal-migration strategies), and their applications to complex molecule synthesis where appropriate. Overall, this comprehensive review aims to document the considerable advancements, current status, and emerging work by critically summarizing the contributions of researchers working in this fascinating area and is expected to stimulate novel, innovative, and broadly applicable strategies for alkenyl sp2 C-H and C-F bond functionalizations in the coming years.
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Affiliation(s)
- Ming-Zhu Lu
- College of Advanced Interdisciplinary Science and Technology, Henan University of Technology, Zhengzhou 450001, China.,School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, Singapore 637371, Singapore
| | - Jeffrey Goh
- School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, Singapore 637371, Singapore
| | - Manikantha Maraswami
- School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, Singapore 637371, Singapore
| | - Zhenhua Jia
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Jie-Sheng Tian
- School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an 710072, China
| | - Teck-Peng Loh
- College of Advanced Interdisciplinary Science and Technology, Henan University of Technology, Zhengzhou 450001, China.,School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, Singapore 637371, Singapore.,Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China
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10
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Gong X, Yu N, Gu L, Li Z, Ma W, Zhao F. Redox-neutral rhodium(III)-catalyzed divergent synthesis of tetrasubstituted 1,3-enynes and alkynylated benzofurans. Org Biomol Chem 2022; 21:147-152. [PMID: 36465010 DOI: 10.1039/d2ob01800d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
With the assistance of the acetamido directing group (DG), a rhodium-catalyzed C-H alkenylation/DG migration cascade for the synthesis of tetrasubstituted 1,3-enynes from N-phenoxyacetamides and 1,3-diynes has been achieved in this work. Alternatively, a rhodium-catalyzed [3 + 2] annulation for the synthesis of alkynylated benzofurans from the same set of substrates has also been achieved by simply changing the reaction conditions. This work highlights the tunable divergent synthesis of valuable compounds triggered by C-H activation.
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Affiliation(s)
- Xin Gong
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics, School of Pharmacy, Chengdu University, Chengdu 610106, China.
| | - Na Yu
- Department of Preparation Center, General Hospital of Ningxia Medical University, Yinchuan 750004, China
| | - Linghui Gu
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics, School of Pharmacy, Chengdu University, Chengdu 610106, China.
| | - Zheyu Li
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics, School of Pharmacy, Chengdu University, Chengdu 610106, China.
| | - Wenbo Ma
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics, School of Pharmacy, Chengdu University, Chengdu 610106, China.
| | - Fei Zhao
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics, School of Pharmacy, Chengdu University, Chengdu 610106, China. .,State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zu Chong Zhi Road, Shanghai 201203, China
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11
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Baghel AS, Kumar A. Ru(II)-catalyzed external auxiliary-free primary amide-directed inverse Sonogashira reaction on (hetero)arylamides. Chem Commun (Camb) 2022; 58:11304-11307. [PMID: 36124904 DOI: 10.1039/d2cc03929j] [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
Herein, we report ruthenium(II)-catalyzed weakly coordinating primary amide-assisted ortho-di-alkynylation of (hetero)arylamides via double C-H bond activation in the presence of bromo-alkynes as coupling partners. The attractive features of the developed strategy lie in the usage of an inexpensive ruthenium(II)-salt, external auxiliary-free directing group and simple reaction conditions, along with a broad substrate scope, high reaction yields and scale-up synthesis.
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Affiliation(s)
- Akanksha Singh Baghel
- Department of Chemistry, Indian Institute of Technology Patna, Bihta 801106, Bihar, India.
| | - Amit Kumar
- Department of Chemistry, Indian Institute of Technology Patna, Bihta 801106, Bihar, India.
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12
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Damrath M, Caspers LD, Duvinage D, Nachtsheim BJ. One-Pot Synthesis of Heteroatom-Bridged Cyclic Diaryliodonium Salts. Org Lett 2022; 24:2562-2566. [PMID: 35349290 DOI: 10.1021/acs.orglett.2c00691] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Two one-pot procedures for the construction of O- and N-bridged diaryliodonium triflates are described. An effective aryne-mediated arylation of o-iodophenols and -sulfonamides provides diarylether and diarylamine intermediates, which are subsequently oxidized and cyclized to the corresponding diaryliodaoxinium and -iodazinium salts. Different derivatizations were applied to demonstrate their capacity as useful building blocks and gain a deeper understanding toward the general reactivity of these underdeveloped but potentially highly useful compounds.
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Affiliation(s)
- Mattis Damrath
- Institute for Organic and Analytical Chemistry, University of Bremen, 28359 Bremen, Germany
| | - Lucien D Caspers
- Institute for Organic and Analytical Chemistry, University of Bremen, 28359 Bremen, Germany
| | - Daniel Duvinage
- Institute for Inorganic Chemistry and Crystallography, University of Bremen, 28359 Bremen, Germany
| | - Boris J Nachtsheim
- Institute for Organic and Analytical Chemistry, University of Bremen, 28359 Bremen, Germany
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13
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Ahmad MS, Meguellati K. Recent Advances in Metal Catalyzed C−H Functionalization with a Wide Range of Directing Groups. ChemistrySelect 2022. [DOI: 10.1002/slct.202103716] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
| | - Kamel Meguellati
- School of Pharmacy Jinan University 855 Xingye Avenue East Guangzhou 511436 China
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14
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Deng K, Jia W, Ángeles Fernández‐Ibáñez M. Selective Para-C-H Alkynylation of Aniline Derivatives by Pd/S,O-Ligand Catalysis. Chemistry 2022; 28:e202104107. [PMID: 34902180 PMCID: PMC9306564 DOI: 10.1002/chem.202104107] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Indexed: 11/11/2022]
Abstract
Herein, we report a nondirected para-selective C-H alkynylation of aniline derivatives by a Pd/S,O-ligand-based catalyst. The reaction proceeds under mild conditions and is compatible with a variety of substituted anilines. The scalability and further derivatizations of the alkynylated products have been also demonstrated.
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Affiliation(s)
- Ke‐Zuan Deng
- Van't Hoff Institute for Molecular SciencesUniversity of AmsterdamScience Park 9041098 XHAmsterdam (TheNetherlands
| | - Wen‐Liang Jia
- Van't Hoff Institute for Molecular SciencesUniversity of AmsterdamScience Park 9041098 XHAmsterdam (TheNetherlands
| | - M. Ángeles Fernández‐Ibáñez
- Van't Hoff Institute for Molecular SciencesUniversity of AmsterdamScience Park 9041098 XHAmsterdam (TheNetherlands
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15
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Ma L, Zhang X, Tuo Y, Zheng QZ. Cp*Rh(III)-Catalyzed Regioselective C(sp 2)-H Mono- and Dialkynylation of Thioamides by Sulfur Coordination. J Org Chem 2022; 87:3691-3700. [PMID: 35138097 DOI: 10.1021/acs.joc.1c02622] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An efficient Cp*Rh(III)-catalyzed regioselective C(sp2)-H mono- and dialkynylation of thioamides was described. This reaction was performed under mild conditions in high yields (up to 98%) with a broad substrate scope. Significantly, the versatility of this method was further demonstrated by controlled mono- and dialkynylation. Application of this protocol in the late stage functionalization of two drug molecules (Adapalene and Amoxapine) was also demonstrated.
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Affiliation(s)
- Lin Ma
- State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering, National Demonstration Center for Experimental Chemistry Education, School of Chemistry and Chemical Engineering, Ningxia University, Yinchuan 750021, China
| | - Xiaohui Zhang
- State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering, National Demonstration Center for Experimental Chemistry Education, School of Chemistry and Chemical Engineering, Ningxia University, Yinchuan 750021, China
| | - Yanyan Tuo
- State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering, National Demonstration Center for Experimental Chemistry Education, School of Chemistry and Chemical Engineering, Ningxia University, Yinchuan 750021, China
| | - Qing-Zhong Zheng
- State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering, National Demonstration Center for Experimental Chemistry Education, School of Chemistry and Chemical Engineering, Ningxia University, Yinchuan 750021, China.,State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Rd. 38, Beijing 100191, China
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16
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Reddy GS, Shukla S, Bhuktar H, Hossain KA, Edwin RK, Giliyaru VB, Misra P, Pal M. Pd/Cu-catalyzed access to novel 3-(benzofuran-2-ylmethyl) substituted (pyrazolo/benzo)triazinone derivatives: their in silico/ in vitro evaluation as inhibitors of chorismate mutase (CM). RSC Adv 2022; 12:26686-26695. [PMID: 36275143 PMCID: PMC9490447 DOI: 10.1039/d2ra05255e] [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: 08/22/2022] [Accepted: 09/12/2022] [Indexed: 11/21/2022] Open
Abstract
In view of the reported chorismate mutase (CM or MtbCM) inhibitory activities of 3-indolylmethyl substituted (pyrazolo/benzo)triazinone derivatives the structurally similar 3-(benzofuran-2-ylmethyl) substituted (pyrazolo/benzo)triazinones were designed and evaluated in silico against CM. The docking of target molecules was performed at the interface site of MtbCM (PDB: 2FP2). All the best ranked molecules participated in a strong H-bonding with the ILE67 of the B chain at the backbone position in addition to several hydrophobic/van der Waals interactions with the hydrophobic residues. Based on encouraging docking results, the one-pot synthesis of newly designed benzofuran derivatives was carried out using tandem Pd/Cu-catalyzed Sonogashira cross-coupling followed by intramolecular cyclization of 2-iodophenols with appropriate terminal alkynes. A range of novel 3-(benzofuran-2-ylmethyl) substituted (pyrazolo/benzo)triazinone derivatives were prepared in high (>80%) yields. Three molecules i.e.3h, 3i and 3m that participated in good interaction with CM in silico showed encouraging (64–65%) inhibition at 30 μM in vitro. An SAR within this class of molecules suggested that the benzotriazinone series in general was better than the pyrazolotriazinone series. Based on molecular docking in silico, CM inhibition in vitro and computational ADME prediction the benzofuran derivatives 3i and 3m seemed to be of further medicinal interest in the context of discovery and development of new anti-tubercular agents. We report the Pd/Cu-catalyzed synthesis, in silico molecular docking, in vitro CM inhibition and computational ADME prediction of novel 3-(benzofuran-2-ylmethyl) substituted (pyrazolo/benzo)triazinone derivatives.![]()
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Affiliation(s)
- Gangireddy Sujeevan Reddy
- Dr. Reddy's Institute of Life Sciences, University of Hyderabad Campus, Gachibowli, Hyderabad 500 046, India
- Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Madhav Nagar, Manipal 576 104, Karnataka, India
| | - Sharda Shukla
- Dr. Reddy's Institute of Life Sciences, University of Hyderabad Campus, Gachibowli, Hyderabad 500 046, India
- Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Madhav Nagar, Manipal 576 104, Karnataka, India
| | - Harshavardhan Bhuktar
- Dr. Reddy's Institute of Life Sciences, University of Hyderabad Campus, Gachibowli, Hyderabad 500 046, India
- Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Madhav Nagar, Manipal 576 104, Karnataka, India
| | - Kazi Amirul Hossain
- Dr. Reddy's Institute of Life Sciences, University of Hyderabad Campus, Gachibowli, Hyderabad 500 046, India
| | - Rebecca Kristina Edwin
- Dr. Reddy's Institute of Life Sciences, University of Hyderabad Campus, Gachibowli, Hyderabad 500 046, India
| | - Varadaraj Bhat Giliyaru
- Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Madhav Nagar, Manipal 576 104, Karnataka, India
| | - Parimal Misra
- Dr. Reddy's Institute of Life Sciences, University of Hyderabad Campus, Gachibowli, Hyderabad 500 046, India
| | - Manojit Pal
- Dr. Reddy's Institute of Life Sciences, University of Hyderabad Campus, Gachibowli, Hyderabad 500 046, India
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17
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Yamazaki K, Mahato SK, Ano Y, Chatani N. Double 1,2-Migration of Bromine and Silicon in Directed C–H Alkynylation Reactions with Silyl-Substituted Alkynyl Bromides through an Iridium Vinylidene Intermediate. Organometallics 2021. [DOI: 10.1021/acs.organomet.1c00581] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ken Yamazaki
- Department of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
| | - Sanjit K. Mahato
- Department of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
| | - Yusuke Ano
- Department of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
| | - Naoto Chatani
- Department of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
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18
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Mandal R, Barsu N, Garai B, Das A, Perekalin D, Sundararaju B. Room-temperature C-H bond alkynylation by merging cobalt and photocatalysts. Chem Commun (Camb) 2021; 57:12167-12170. [PMID: 34726212 DOI: 10.1039/d1cc05263b] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new protocol is developed for the mono- and bis-ortho-C-H alkynylation of easily accessible benzamide derivatives using alkynyl bromides at room temperature by merging cobalt and photocatalysts. The diverse reactivity of various alkynyl bromides towards the C-H alkynylation and competing C-H/N-H bond annulation reactions has been demonstrated to give the corresponding products in good yields with excellent functional group tolerance.
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Affiliation(s)
- Rajib Mandal
- Department of chemistry, Indian Institute of technology Kanpur, Kanpur, Uttar Pradesh, 208016, India.
| | - Nagaraju Barsu
- Department of chemistry, Indian Institute of technology Kanpur, Kanpur, Uttar Pradesh, 208016, India.
| | - Bholanath Garai
- Department of chemistry, Indian Institute of technology Kanpur, Kanpur, Uttar Pradesh, 208016, India.
| | - Abir Das
- Department of chemistry, Indian Institute of technology Kanpur, Kanpur, Uttar Pradesh, 208016, India.
| | - Dmitry Perekalin
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilova str., Moscow, Russia
| | - Basker Sundararaju
- Department of chemistry, Indian Institute of technology Kanpur, Kanpur, Uttar Pradesh, 208016, India.
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19
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Zhao F, Zhou Z, Lu Y, Qiao J, Zhang X, Gong X, Liu S, Lin S, Wu X, Yi W. Chemo-, Regio-, and Stereoselective Assembly of Polysubstituted Furan-2(5 H)-ones Enabled by Rh(III)-Catalyzed Domino C–H Alkenylation/Directing Group Migration/Lactonization: A Combined Experimental and Computational Study. ACS Catal 2021. [DOI: 10.1021/acscatal.1c03846] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Fei Zhao
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics, School of Pharmacy, Chengdu University, Chengdu 610106, China
| | - Zhi Zhou
- Key Laboratory of Molecular Target and Clinical Pharmacology & State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences & the Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou, Guangdong 511436, China
| | - Yangbin Lu
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics, School of Pharmacy, Chengdu University, Chengdu 610106, China
| | - Jin Qiao
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics, School of Pharmacy, Chengdu University, Chengdu 610106, China
| | - Xiaoning Zhang
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics, School of Pharmacy, Chengdu University, Chengdu 610106, China
| | - Xin Gong
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics, School of Pharmacy, Chengdu University, Chengdu 610106, China
| | - Siyu Liu
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics, School of Pharmacy, Chengdu University, Chengdu 610106, China
| | - Shuang Lin
- Key Laboratory of Molecular Target and Clinical Pharmacology & State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences & the Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou, Guangdong 511436, China
| | - Xiaowei Wu
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
- Zhongshan Institute for Drug Discovery, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Zhongshan 528400, China
| | - Wei Yi
- Key Laboratory of Molecular Target and Clinical Pharmacology & State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences & the Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou, Guangdong 511436, China
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20
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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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21
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Son J. Sustainable manganese catalysis for late-stage C-H functionalization of bioactive structural motifs. Beilstein J Org Chem 2021; 17:1733-1751. [PMID: 34386100 PMCID: PMC8329386 DOI: 10.3762/bjoc.17.122] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Accepted: 07/15/2021] [Indexed: 01/31/2023] Open
Abstract
The late-stage C–H functionalization of bioactive structural motifs is a powerful synthetic strategy for accessing advanced agrochemicals, bioimaging materials, and drug candidates, among other complex molecules. While traditional late-stage diversification relies on the use of precious transition metals, the utilization of 3d transition metals is an emerging approach in organic synthesis. Among the 3d metals, manganese catalysts have gained increasing attention for late-stage diversification due to the sustainability, cost-effectiveness, ease of operation, and reduced toxicity. Herein, we summarize recent manganese-catalyzed late-stage C–H functionalization reactions of biologically active small molecules and complex peptides.
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Affiliation(s)
- Jongwoo Son
- Department of Chemistry, Dong-A University, Busan 49315, South Korea.,Department of Chemical Engineering (BK21 FOUR Graduate Program), Dong-A University, Busan 49315, South Korea
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22
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He Y, Zheng T, Huang YH, Dong L. Rh(III)-Catalyzed olefination to build diverse oxazole derivatives from functional alkynes. Org Biomol Chem 2021; 19:4937-4942. [PMID: 33983356 DOI: 10.1039/d1ob00507c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel Rh(iii)-catalyzed olefination reaction of oxazoles to generate diverse oxazole skeleton derivatives has been realized by directly using oxazole as the directing group. The reaction could tolerate many functional groups, affording complex oxazole derivatives with long chain alkenyls in moderate to good yields, which might find applications in the construction of diverse compounds.
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Affiliation(s)
- Yuan He
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China.
| | - Ting Zheng
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China.
| | - Yin-Hui Huang
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China.
| | - Lin Dong
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China.
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23
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Della‐Felice F, Zanini M, Jie X, Tan E, Echavarren AM. Rhodium(III)‐Catalyzed Synthesis of Skipped Enynes via C(sp
3
)–H Alkynylation of Terminal Alkenes. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202014877] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Franco Della‐Felice
- Institute of Chemical Research of Catalonia (ICIQ) Barcelona Institute of Science and Technology Av. Països Catalans 16 43007 Tarragona Spain
| | - Margherita Zanini
- Institute of Chemical Research of Catalonia (ICIQ) Barcelona Institute of Science and Technology Av. Països Catalans 16 43007 Tarragona Spain
| | - Xiaoming Jie
- Institute of Chemical Research of Catalonia (ICIQ) Barcelona Institute of Science and Technology Av. Països Catalans 16 43007 Tarragona Spain
| | - Eric Tan
- Institute of Chemical Research of Catalonia (ICIQ) Barcelona Institute of Science and Technology Av. Països Catalans 16 43007 Tarragona Spain
| | - Antonio M. Echavarren
- Institute of Chemical Research of Catalonia (ICIQ) Barcelona Institute of Science and Technology Av. Països Catalans 16 43007 Tarragona Spain
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24
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Della-Felice F, Zanini M, Jie X, Tan E, Echavarren AM. Rhodium(III)-Catalyzed Synthesis of Skipped Enynes via C(sp 3 )-H Alkynylation of Terminal Alkenes. Angew Chem Int Ed Engl 2021; 60:5693-5698. [PMID: 33410209 DOI: 10.1002/anie.202014877] [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] [Received: 11/06/2020] [Revised: 12/24/2020] [Indexed: 12/18/2022]
Abstract
The RhIII -catalyzed allylic C-H alkynylation of non-activated terminal alkenes leads selectively to linear 1,4-enynes at room-temperature. The catalytic system tolerates a wide range of functional groups without competing functionalization at other positions. Similarly, the vinylic C-H alkynylation of α,β- and β,γ- unsaturated amides gives conjugated Z-1,3-enynes and E-enediynes.
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Affiliation(s)
- Franco Della-Felice
- Institute of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007, Tarragona, Spain
| | - Margherita Zanini
- Institute of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007, Tarragona, Spain
| | - Xiaoming Jie
- Institute of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007, Tarragona, Spain
| | - Eric Tan
- Institute of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007, Tarragona, Spain
| | - Antonio M Echavarren
- Institute of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007, Tarragona, Spain
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25
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Mondal S, Pinkert T, Daniliuc CG, Glorius F. Regioselektive und redox‐neutrale Cp*Ir
III
‐katalysierte allylische C‐H‐Alkinylierung. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202015249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Shobhan Mondal
- Organisch-Chemisches Institut Westfälische Wilhelms-Universität Münster Corrensstraße 40 48149 Münster Deutschland
| | - Tobias Pinkert
- Organisch-Chemisches Institut Westfälische Wilhelms-Universität Münster Corrensstraße 40 48149 Münster Deutschland
| | - Constantin G. Daniliuc
- Organisch-Chemisches Institut Westfälische Wilhelms-Universität Münster Corrensstraße 40 48149 Münster Deutschland
| | - Frank Glorius
- Organisch-Chemisches Institut Westfälische Wilhelms-Universität Münster Corrensstraße 40 48149 Münster Deutschland
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26
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Das A, Maji B. The Emergence of Palladium-Catalyzed C(sp 3 )-H Functionalization of Free Carboxylic Acids. Chem Asian J 2021; 16:397-408. [PMID: 33427411 DOI: 10.1002/asia.202001440] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Revised: 01/06/2021] [Indexed: 01/15/2023]
Abstract
Palladium-catalyzed directing group assisted C-H bond activation has emerged as a powerful tool in synthetic organic chemistry. However, only recently, among various directing groups, widely available carboxylate moiety is recognized as a versatile candidate for the regioselective transformations. Notably, palladium-catalyzed carboxylate directed C(sp3 )-H bond activation and diverse functionalization is highly challenging and has gained huge attention for its versatile applications. Mono- and bidentate ligands have proven to be useful for accelerating the C(sp3 )-H bond activation step, which helps to control reactivity and selectivity (including enantioselectivity). In this Minireview, we discuss the recent progress made in palladium-catalyzed C(sp3 )-H bond functionalization reactions for the construction of C-C and C-Heteroatom bonds with the direction of free carboxylic acid.
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Affiliation(s)
- Animesh Das
- Indian Institute of Science Education and Research Kolkata Nadia, West Bengal, India
| | - Biplab Maji
- Indian Institute of Science Education and Research Kolkata Nadia, West Bengal, India
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27
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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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28
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Zhao T, Pu X, Han W, Gao G. Nickel-Catalyzed 3,3-Dialkynylation of 2-Aryl Acrylamides: Direct Access to gem-Diethynylethenes via Double Vinylic C-H Bond Activation. Org Lett 2021; 23:1199-1203. [PMID: 33522818 DOI: 10.1021/acs.orglett.0c04137] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Direct access to gem-diethynylethenes is achieved by a Ni-catalyzed 3,3-dialkynylation of 2-aryl acrylamides with 1-bromotriisopropylsilylacetylene. The preliminary mechanism study reveals that the reaction goes through a sequential double vinylic C-H bond activation with the assistance of an 8-aminoquinolinyl directing group.
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Affiliation(s)
- Tingxing Zhao
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu 610064, P.R. China
| | - Xingwen Pu
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu 610064, P.R. China
| | - Weiguo Han
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu 610064, P.R. China
| | - Ge Gao
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu 610064, P.R. China
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29
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Mondal S, Pinkert T, Daniliuc CG, Glorius F. Regioselective and Redox‐Neutral Cp*Ir
III
‐Catalyzed Allylic C−H Alkynylation. Angew Chem Int Ed Engl 2021; 60:5688-5692. [DOI: 10.1002/anie.202015249] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2020] [Revised: 12/22/2020] [Indexed: 01/09/2023]
Affiliation(s)
- Shobhan Mondal
- Organisch-Chemisches Institut Westfälische Wilhelms-Universität Münster Corrensstraße 40 48149 Münster Germany
| | - Tobias Pinkert
- Organisch-Chemisches Institut Westfälische Wilhelms-Universität Münster Corrensstraße 40 48149 Münster Germany
| | - Constantin G. Daniliuc
- Organisch-Chemisches Institut Westfälische Wilhelms-Universität Münster Corrensstraße 40 48149 Münster Germany
| | - Frank Glorius
- Organisch-Chemisches Institut Westfälische Wilhelms-Universität Münster Corrensstraße 40 48149 Münster Germany
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30
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Ghiringhelli F, Uttry A, Ghosh KK, van Gemmeren M. Direct β- and γ-C(sp 3 )-H Alkynylation of Free Carboxylic Acids*. Angew Chem Int Ed Engl 2020; 59:23127-23131. [PMID: 32898310 PMCID: PMC7756274 DOI: 10.1002/anie.202010784] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Revised: 09/04/2020] [Indexed: 12/23/2022]
Abstract
In this study we report the identification of a novel class of ligands for palladium-catalyzed C(sp3 )-H activation that enables the direct alkynylation of free carboxylic acid substrates. In contrast to previous synthetic methods, no introduction/removal of an exogenous directing group is required. A broad scope of acids including both α-quaternary and challenging α-non-quaternary can be used as substrates. Additionally, the alkynylation in the distal γ-position is reported. Finally, this study encompasses preliminary findings on an enantioselective variant of the title transformation as well as synthetic applications of the products obtained.
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Affiliation(s)
- Francesca Ghiringhelli
- Organisch-Chemisches InstitutWestfalische Wilhelms-Universität MünsterCorrensstraße 3648149MünsterGermany
| | - Alexander Uttry
- Organisch-Chemisches InstitutWestfalische Wilhelms-Universität MünsterCorrensstraße 3648149MünsterGermany
| | - Kiron Kumar Ghosh
- Organisch-Chemisches InstitutWestfalische Wilhelms-Universität MünsterCorrensstraße 3648149MünsterGermany
| | - Manuel van Gemmeren
- Organisch-Chemisches InstitutWestfalische Wilhelms-Universität MünsterCorrensstraße 3648149MünsterGermany
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31
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Ghiringhelli F, Uttry A, Ghosh KK, Gemmeren M. Direkte β‐ und γ‐C(sp
3
)‐H Alkinylierung freier Carbonsäuren**. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202010784] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Francesca Ghiringhelli
- Organisch-Chemisches Institut Westfälische Wilhelms-Universität Münster Corrensstraße 36 48149 Münster Deutschland
| | - Alexander Uttry
- Organisch-Chemisches Institut Westfälische Wilhelms-Universität Münster Corrensstraße 36 48149 Münster Deutschland
| | - Kiron Kumar Ghosh
- Organisch-Chemisches Institut Westfälische Wilhelms-Universität Münster Corrensstraße 36 48149 Münster Deutschland
| | - Manuel Gemmeren
- Organisch-Chemisches Institut Westfälische Wilhelms-Universität Münster Corrensstraße 36 48149 Münster Deutschland
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32
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Azizollahi H, García-López JA. Recent Advances on Synthetic Methodology Merging C-H Functionalization and C-C Cleavage. Molecules 2020; 25:E5900. [PMID: 33322116 PMCID: PMC7764206 DOI: 10.3390/molecules25245900] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Revised: 12/09/2020] [Accepted: 12/10/2020] [Indexed: 02/08/2023] Open
Abstract
The functionalization of C-H bonds has become a major thread of research in organic synthesis that can be assessed from different angles, for instance depending on the type of catalyst employed or the overall transformation that is carried out. This review compiles recent progress in synthetic methodology that merges the functionalization of C-H bonds along with the cleavage of C-C bonds, either in intra- or intermolecular fashion. The manuscript is organized in two main sections according to the type of substrate in which the cleavage of the C-C bond takes place, basically attending to the scission of strained or unstrained C-C bonds. Furthermore, the related research works have been grouped on the basis of the mechanistic aspects of the different transformations that are carried out, i.e.,: (a) classic transition metal catalysis where organometallic intermediates are involved; (b) processes occurring via radical intermediates generated through the use of radical initiators or photochemically; and (c) reactions that are catalyzed or mediated by suitable Lewis or Brønsted acid or bases, where molecular rearrangements take place. Thus, throughout the review a wide range of synthetic approaches show that the combination of C-H and C-C cleavage in single synthetic operations can serve as a platform to achieve complex molecular skeletons in a straightforward manner, among them interesting carbo- and heterocyclic scaffolds.
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Affiliation(s)
- Hamid Azizollahi
- Department of Chemistry, Faculty of Science, Ferdowsi University of Mashhad, Mashhad 91775-1436, Iran
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33
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Bag D, Verma PK, Sawant SD. Chiral Transient Directing Group Strategies in Asymmetric Synthesis. Chem Asian J 2020; 15:3225-3238. [PMID: 32822121 DOI: 10.1002/asia.202000657] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Revised: 08/14/2020] [Indexed: 12/13/2022]
Abstract
The development of novel methodologies for catalytic enantioselective functionalization reactions enabled by chiral transient directing groups is accompanying in a paradigm shift in the field of asymmetric synthesis. In particular, these highly atom- and step-economic enantioinduction processes commonly proceed either via enantioselective C-H functionalization, or via enantioselective hydroarylation of the pro-chiral substrates generating point, axial or planar chirality. The use of the transient directing group strategy in C-H functionalizations precludes the stoichiometric installations and removal of directing groups and enables efficient, more compatible and economical chemical routes. This minireview highlights asymmetric transition-metal-catalyzed methodologies involving chiral transient directing groups together with the scope, utility and future perspective of the field.
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Affiliation(s)
- Debojyoti Bag
- Medicinal Chemistry Division, CSIR-Indian Institute of Integrative Medicine, Jammu Canal Road, Jammu, Jammu & Kashmir, 180001, India
| | - Praveen Kumar Verma
- Medicinal Chemistry Division, CSIR-Indian Institute of Integrative Medicine, Jammu Canal Road, Jammu, Jammu & Kashmir, 180001, India
| | - Sanghapal D Sawant
- Medicinal Chemistry Division, CSIR-Indian Institute of Integrative Medicine, Jammu Canal Road, Jammu, Jammu & Kashmir, 180001, India
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Ye X, Wang C, Zhang S, Wei J, Shan C, Wojtas L, Xie Y, Shi X. Facilitating Ir-Catalyzed C-H Alkynylation with Electrochemistry: Anodic Oxidation-Induced Reductive Elimination. ACS Catal 2020; 10:11693-11699. [PMID: 38107025 PMCID: PMC10723742 DOI: 10.1021/acscatal.0c03207] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
An electrochemical approach in promoting directed C-H alkynylation with terminal alkyne via iridium catalysis is reported. This work employed anodic oxidation of Ir(III) intermediate (characterized by X-ray crystallography) to promote reductive elimination, giving the desired coupling products in good yields (up to 95%) without the addition of any other external oxidants. This transformation is suitable for various directing groups with H2 as the only by-product, which warrants a high atom economy and practical oxidative C-C bond formation under mild conditions.
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Affiliation(s)
- Xiaohan Ye
- Department of Chemistry, University of South Florida, Tampa, FL 33620, USA
| | - Chenhuan Wang
- Department of Chemistry, University of South Florida, Tampa, FL 33620, USA
| | - Shuyao Zhang
- Department of Chemistry, University of South Florida, Tampa, FL 33620, USA
| | - Jingwen Wei
- Department of Chemistry, University of South Florida, Tampa, FL 33620, USA
| | - Chuan Shan
- Department of Chemistry, University of South Florida, Tampa, FL 33620, USA
| | - Lukasz Wojtas
- Department of Chemistry, University of South Florida, Tampa, FL 33620, USA
| | - Yan Xie
- College of Chemistry and Materials Engineering, Quzhou University, Quzhou 324000, P.R.China
| | - Xiaodong Shi
- Department of Chemistry, University of South Florida, Tampa, FL 33620, USA
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35
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Liu R, Wei Y, Shi M. Rhodium(III)‐Catalyzed Cross Coupling of Sulfoxonium Ylides and 1,3‐Diynes to Produce Naphthol‐Indole Derivatives: An Arene
ortho
C−H Activation/Annulation Cascade. ChemCatChem 2020. [DOI: 10.1002/cctc.202001315] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Ruixing Liu
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis University of Chinese Academy of Sciences, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Linglin Lu Shanghai 200032 China
| | - Yin Wei
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis University of Chinese Academy of Sciences, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Linglin Lu Shanghai 200032 China
| | - Min Shi
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis University of Chinese Academy of Sciences, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Linglin Lu Shanghai 200032 China
- Shenzhen Grubbs Institute Southern University of Science and Technology Shenzhen 518000 Guangdong China
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36
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Gramage-Doria R. Steering Site-Selectivity in Transition Metal-Catalyzed C-H Bond Functionalization: the Challenge of Benzanilides. Chemistry 2020; 26:9688-9709. [PMID: 32237177 DOI: 10.1002/chem.202000672] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Revised: 03/18/2020] [Indexed: 12/31/2022]
Abstract
Selective C-H bond functionalization catalyzed by metal complexes have completely revolutionized the way in which chemical synthesis is conceived nowadays. Typically, the reactivity of a transition metal catalyst is the key to control the site-, regio- and/or stereo-selectivity of a C-H bond functionalization. Of particular interests are molecules that contain multiple C-H bonds prone to undergo C-H bond activations with very similar bond dissociation energies at different positions. This is the case of benzanilides, relevant chemical motifs that are found in many useful fine chemicals, in which two C-H sites are present in chemically different aromatic fragments. In the last years, it has been found that depending on the metal catalyst and the reaction conditions, the amide motif might behave as a directing group towards the metal-catalyzed C-H bond activation in the benzamide site or in the anilide site. The impact and the consequences of such subtle control of site-selectivity are herein reviewed with important applications in carbon-carbon and carbon-heteroatom bond forming processes. The mechanisms unraveling these unique transformations are discussed in order to provide a better understanding for future developments in the field of site-selective C-H bond functionalization with transition metal catalysts.
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37
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Biswas A, Maity S, Pan S, Samanta R. Transition Metal‐Catalysed Direct C−H Bond Functionalizations of 2‐Pyridone Beyond C3‐Selectivity. Chem Asian J 2020; 15:2092-2109. [PMID: 32500612 DOI: 10.1002/asia.202000506] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Revised: 06/02/2020] [Indexed: 12/20/2022]
Affiliation(s)
- Aniruddha Biswas
- Department of ChemistryIndian Institute of Technology Kharagpur Kharagpur 721302, West Bengal India
| | - Saurabh Maity
- Department of ChemistryIndian Institute of Technology Kharagpur Kharagpur 721302, West Bengal India
- Current Address: Institute of Organic and Biomolecular ChemistryGeorg-August University Goettingen 37077 Germany
| | - Subarna Pan
- Department of ChemistryIndian Institute of Technology Kharagpur Kharagpur 721302, West Bengal India
| | - Rajarshi Samanta
- Department of ChemistryIndian Institute of Technology Kharagpur Kharagpur 721302, West Bengal India
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38
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Caspers LD, Spils J, Damrath M, Lork E, Nachtsheim BJ. One-Pot Synthesis and Conformational Analysis of Six-Membered Cyclic Iodonium Salts. J Org Chem 2020; 85:9161-9178. [PMID: 32539390 DOI: 10.1021/acs.joc.0c01125] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Two one-pot procedures for the construction of carbon-bridged diaryliodonium triflates and tetrafluoroborates are described. Strong Brønsted acids enable the effective Friedel-Crafts alkylation with diversely substituted o-iodobenzyl alcohol derivatives, providing diphenylmethane scaffolds, which are subsequently oxidized and cyclized to the corresponding dibenzo[b,e]iodininium salts. Based on NMR investigations and density functional theory (DFT) calculations, we could verify the so-far-undescribed existence of two stable isomers in cyclic iodonium salts substituted with aliphatic side chains in the carbon bridge.
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Affiliation(s)
- Lucien D Caspers
- Institute for Organic and Analytical Chemistry, University of Bremen, Leobener Straße 7, 28359 Bremen, Germany
| | - Julian Spils
- Institute for Organic and Analytical Chemistry, University of Bremen, Leobener Straße 7, 28359 Bremen, Germany
| | - Mattis Damrath
- Institute for Organic and Analytical Chemistry, University of Bremen, Leobener Straße 7, 28359 Bremen, Germany
| | - Enno Lork
- Institute for Inorganic Chemistry and Crystallography, University of Bremen, 28359 Bremen, Germany
| | - Boris J Nachtsheim
- Institute for Organic and Analytical Chemistry, University of Bremen, Leobener Straße 7, 28359 Bremen, Germany
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39
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Pati TK, Ajarul S, Kundu M, Tayde D, Khamrai U, Maiti DK. Synthesis of Functionalized Arylacetamido-2-pyridones through ortho-C(sp2)–H-Activated Installation of Olefins and Alkynes. J Org Chem 2020; 85:8563-8579. [DOI: 10.1021/acs.joc.0c00941] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Tanmay K. Pati
- Department of Chemistry, University of Calcutta, 92, A. P. C. Road, Kolkata 700009, India
- TCG Life Sciences Pvt. Ltd., BN-7, Sector V, Salt Lake City, Kolkata 700091, India
| | - Sk Ajarul
- Department of Chemistry, University of Calcutta, 92, A. P. C. Road, Kolkata 700009, India
| | - Mrinalkanti Kundu
- TCG Life Sciences Pvt. Ltd., BN-7, Sector V, Salt Lake City, Kolkata 700091, India
| | - Deepak Tayde
- TCG Life Sciences Pvt. Ltd., BN-7, Sector V, Salt Lake City, Kolkata 700091, India
| | - Uttam Khamrai
- TCG Life Sciences Pvt. Ltd., BN-7, Sector V, Salt Lake City, Kolkata 700091, India
| | - Dilip K. Maiti
- Department of Chemistry, University of Calcutta, 92, A. P. C. Road, Kolkata 700009, India
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40
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Tan E, Zanini M, Echavarren AM. Iridium‐Catalyzed β‐Alkynylation of Aliphatic Oximes as Masked Carbonyl Compounds and Alcohols. Angew Chem Int Ed Engl 2020; 59:10470-10473. [DOI: 10.1002/anie.202002948] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Indexed: 12/26/2022]
Affiliation(s)
- Eric Tan
- Institute of Chemical Research of Catalonia (ICIQ) Barcelona Institute of Science and Technology Av. Països Catalans 16 43007 Tarragona Spain
- Departament de Química Analítica i Química Orgànica Universitat Rovira i Virgili C/ Marcel⋅li Domingo s/n 43007 Tarragona Spain
| | - Margherita Zanini
- Institute of Chemical Research of Catalonia (ICIQ) Barcelona Institute of Science and Technology Av. Països Catalans 16 43007 Tarragona Spain
- Departament de Química Analítica i Química Orgànica Universitat Rovira i Virgili C/ Marcel⋅li Domingo s/n 43007 Tarragona Spain
| | - Antonio M. Echavarren
- Institute of Chemical Research of Catalonia (ICIQ) Barcelona Institute of Science and Technology Av. Països Catalans 16 43007 Tarragona Spain
- Departament de Química Analítica i Química Orgànica Universitat Rovira i Virgili C/ Marcel⋅li Domingo s/n 43007 Tarragona Spain
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41
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Tan E, Zanini M, Echavarren AM. Iridium‐Catalyzed β‐Alkynylation of Aliphatic Oximes as Masked Carbonyl Compounds and Alcohols. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202002948] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Eric Tan
- Institute of Chemical Research of Catalonia (ICIQ) Barcelona Institute of Science and Technology Av. Països Catalans 16 43007 Tarragona Spain
- Departament de Química Analítica i Química Orgànica Universitat Rovira i Virgili C/ Marcel⋅li Domingo s/n 43007 Tarragona Spain
| | - Margherita Zanini
- Institute of Chemical Research of Catalonia (ICIQ) Barcelona Institute of Science and Technology Av. Països Catalans 16 43007 Tarragona Spain
- Departament de Química Analítica i Química Orgànica Universitat Rovira i Virgili C/ Marcel⋅li Domingo s/n 43007 Tarragona Spain
| | - Antonio M. Echavarren
- Institute of Chemical Research of Catalonia (ICIQ) Barcelona Institute of Science and Technology Av. Països Catalans 16 43007 Tarragona Spain
- Departament de Química Analítica i Química Orgànica Universitat Rovira i Virgili C/ Marcel⋅li Domingo s/n 43007 Tarragona Spain
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42
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Mahato SK, Chatani N. The Iridium(III)-Catalyzed Direct C(sp2)– and C(sp3)–H Alkynylation of 2-Acylimidazoles with Various Alkynyl Bromides: Understanding the Full Catalytic Cycle. ACS Catal 2020. [DOI: 10.1021/acscatal.0c01189] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Sanjit K. Mahato
- Department of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
| | - Naoto Chatani
- Department of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
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43
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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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44
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Porey S, Zhang X, Bhowmick S, Kumar Singh V, Guin S, Paton RS, Maiti D. Alkyne Linchpin Strategy for Drug:Pharmacophore Conjugation: Experimental and Computational Realization of a Meta-Selective Inverse Sonogashira Coupling. J Am Chem Soc 2020; 142:3762-3774. [PMID: 31910623 DOI: 10.1021/jacs.9b10646] [Citation(s) in RCA: 82] [Impact Index Per Article: 20.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The late-stage functionalization (LSF) of pharmaceutical and agrochemical compounds by the site-selective activation of C-H bonds provides access to diverse structural analogs and expands synthetically-accessible chemical space. We report a C-H functionalization LSF strategy that hinges on the use of an alkyne linchpin to assemble conjugates of sp2-rich marketed pharmaceuticals and agrochemicals with sp3-rich 3D fragments and natural products. This is accomplished through a template-assisted inverse Sonogashira reaction that displays high levels of selectivity for the meta position. This protocol is also amenable to distal structural modifications of α-amino acids. The transformation of alkyne functionality to other functional groups further highlights the applicative potential. Computational and experimental mechanistic studies shed light on the detailed mechanism. Turnover-limiting 1,2-migratory insertion of the bromoalkyne coupling partner occurs after relatively fast C-H activation. While this insertion occurs unselectively, regioconvergence results from one of the adducts undergoing a 1,2-trialkylsilyl migration to form the alkynylated product. A heterobimetallic Pd-Ag transition structure is essential for product formation in the β-bromide elimination step.
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Affiliation(s)
- Sandip Porey
- Department of Chemistry , Indian Institute of Technology Bombay , Powai, Mumbai 400076 , India
| | - Xinglong Zhang
- Chemistry Research Laboratory , University of Oxford , Mansfield Road , Oxford OX1 3TA , United Kingdom
| | - Suman Bhowmick
- Department of Chemistry , Indian Institute of Technology Bombay , Powai, Mumbai 400076 , India
| | - Vikas Kumar Singh
- Department of Chemistry , Indian Institute of Technology Bombay , Powai, Mumbai 400076 , India
| | - Srimanta Guin
- Department of Chemistry , Indian Institute of Technology Bombay , Powai, Mumbai 400076 , India
| | - Robert S Paton
- Chemistry Research Laboratory , University of Oxford , Mansfield Road , Oxford OX1 3TA , United Kingdom.,Department of Chemistry , Colorado State University , Fort Collins , Colorado 80523 , United States
| | - Debabrata Maiti
- Department of Chemistry , Indian Institute of Technology Bombay , Powai, Mumbai 400076 , India.,Tokyo Tech World Research Hub Initiative (WRHI), Laboratory for Chemistry and Life Science , Tokyo Institute of Technology , Tokyo 152-8550 , Japan
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45
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Panda B. Joy and Challenges of Alkynylation of Arenes and Heteroarenes through Double C−H Functionalizations. ASIAN J ORG CHEM 2020. [DOI: 10.1002/ajoc.201900733] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Biswajit Panda
- Department of ChemistryCity College 102/1 Raja Rammohan Sarani Kolkata 700009 India
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46
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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: 583] [Impact Index Per Article: 145.8] [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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47
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Rao MLN, Ramakrishna BS. Rh-Catalyzed aldehydic C–H alkynylation and annulation. Org Biomol Chem 2020; 18:1402-1411. [DOI: 10.1039/c9ob02670c] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Novel Rh-catalyzed aldehydic C–H bond alkynylation and annulation for the in situ synthesis of chromones and aurones are described.
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Affiliation(s)
- Maddali L. N. Rao
- Department of Chemistry
- Indian Institute of Technology Kanpur
- Kanpur
- India
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48
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Danilkina NA, Vasileva AA, Balova IA. A.E.Favorskii’s scientific legacy in modern organic chemistry: prototropic acetylene – allene isomerization and the acetylene zipper reaction. RUSSIAN CHEMICAL REVIEWS 2020. [DOI: 10.1070/rcr4902] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Alexei Evgrafovich Favorskii was an outstanding organic chemist who left a great scientific legacy as a result of long time and fruitful work. Most of the theoretically and practically important discoveries of A.E.Favorskii were made in the chemistry of acetylene and its derivatives. Nowadays, the reactions discovered by him, which include acetylene – allene isomerization, the Favorskii and retro-Favorskii reactions, the Favorskii rearrangement and the vinylation reaction, are widely used in industry and in laboratory synthesis. This review summarizes the main scientific achievements of A.E.Favorskii, as well as their development in modern organic chemistry. Much consideration is given to acetylene – allene isomerization as a convenient method for the synthesis of methyl-substituted acetylenes and to the acetylene zipper reaction as a synthetic tool for obtaining terminal acetylenes. The review presents examples of the application of these reactions in modern organic synthesis of complex molecules, including natural compounds and their analogues.
The bibliography includes 266 references.
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49
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Sun X, Zhao W, Li BJ. Iridium-catalyzed, ligand-controlled directed alkynylation and alkenylation of arenes with terminal alkynes. Chem Commun (Camb) 2020; 56:1298-1301. [DOI: 10.1039/c9cc08735d] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
We report iridium-catalyzed C–C formation between benzamides and terminal alkynes.
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Affiliation(s)
- Xin Sun
- Center of Basic Molecular Science (CBMS)
- Department of Chemistry
- Tsinghua University
- Beijing
- China
| | - Wei Zhao
- Center of Basic Molecular Science (CBMS)
- Department of Chemistry
- Tsinghua University
- Beijing
- China
| | - Bi-Jie Li
- Center of Basic Molecular Science (CBMS)
- Department of Chemistry
- Tsinghua University
- Beijing
- China
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50
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Mondal A, Chen H, Flämig L, Wedi P, van Gemmeren M. Sterically Controlled Late-Stage C–H Alkynylation of Arenes. J Am Chem Soc 2019; 141:18662-18667. [DOI: 10.1021/jacs.9b10868] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Arup Mondal
- Max-Planck-Institute for Chemical Energy Conversion, Stiftstraße 34-36, 45470 Mülheim an der Ruhr, Germany
| | - Hao Chen
- Max-Planck-Institute for Chemical Energy Conversion, Stiftstraße 34-36, 45470 Mülheim an der Ruhr, Germany
| | - Lea Flämig
- Westfälische Wilhelms-Universität Münster, Corrensstraße 40, 48149 Münster, Germany
| | - Philipp Wedi
- Max-Planck-Institute for Chemical Energy Conversion, Stiftstraße 34-36, 45470 Mülheim an der Ruhr, Germany
| | - Manuel van Gemmeren
- Max-Planck-Institute for Chemical Energy Conversion, Stiftstraße 34-36, 45470 Mülheim an der Ruhr, Germany
- Westfälische Wilhelms-Universität Münster, Corrensstraße 40, 48149 Münster, Germany
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