1
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Das S, Datta T, Sk MA, Roy B, Nandi RK. Isoxazole group directed Rh(III)-catalyzed alkynylation using TIPS-EBX. Org Biomol Chem 2024; 22:6922-6927. [PMID: 38978484 DOI: 10.1039/d4ob00797b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/10/2024]
Abstract
A highly effective isoxazole directed ortho C-H alkynylation has been developed. Rhodium(III) catalyzed direct di-(and/or mono) alkynylation using a hypervalent iodine reagent (TIPS-EBX) is reported. The reaction proceeds with a wide substrate scope under benign conditions. Preliminary mechanistic studies support this chelation assisted C-H alkynylation.
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Affiliation(s)
- Sukanya Das
- Department of Chemistry, Jadavpur University, 188, Raja Subodh Chandra Mallick Rd, Jadavpur, Kolkata, West Bengal 700032, India.
| | - Tanmoy Datta
- Department of Chemistry, Kalyani University, Block C, Nadia, Kalyani, West Bengal 741235, India
| | - Md Abbasuddin Sk
- Department of Chemistry, Jadavpur University, 188, Raja Subodh Chandra Mallick Rd, Jadavpur, Kolkata, West Bengal 700032, India.
| | - Brindaban Roy
- Department of Chemistry, Kalyani University, Block C, Nadia, Kalyani, West Bengal 741235, India
| | - Raj K Nandi
- Department of Chemistry, Jadavpur University, 188, Raja Subodh Chandra Mallick Rd, Jadavpur, Kolkata, West Bengal 700032, India.
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2
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Zhou P, Liang X, Xu Z, Chen H, Wei Z, Liang T, Jiang J, Zhang Z. Regiodivergent C-H alkynylation of 2-arylthiazoles switched by Ru II and Pd II catalysis. Chem Commun (Camb) 2024; 60:6679-6682. [PMID: 38860866 DOI: 10.1039/d4cc02254h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/12/2024]
Abstract
Two complementary regiodivergent C-H alkynylations of 2-arylthiazoles are reported. When RuII catalysis is employed, an aryl ortho-alkynylation process is favored. The alkynylated products are gained in good yields. With the use of PdII catalysis, a thiazole C5-alkynylation process is developed, allowing for the construction of C5-alkynylated products. This strategy not only expands the methods for the functionalization of 2-arylthiazoles, but also provides new opportunities for the rapid assembly of complex molecular structures, which may have great potential in organic synthesis, medicinal chemistry, and materials science.
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Affiliation(s)
- Pengfei Zhou
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, P. R. China.
| | - Xinyao Liang
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, P. R. China.
| | - Zekun Xu
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, P. R. China.
| | - Honggu Chen
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, P. R. China.
| | - Zongwu Wei
- School of Resources, Environment and Materials, Guangxi University, Nanning 530004, P. R. China
| | - Taoyuan Liang
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, P. R. China.
| | - Jun Jiang
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, P. R. China.
| | - Zhuan Zhang
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, P. R. China.
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3
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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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4
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Ding XX, Ren BQ, Li BT, Pang ZJ, Xu YJ, Dong L. Pd(II)-Catalyzed β-C(sp 3)-H Alkynylation of Alanine in Di- and Tripeptides with Asn as an Endogenous Directing Group. J Org Chem 2024; 89:3390-3402. [PMID: 38377557 DOI: 10.1021/acs.joc.3c02823] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2024]
Abstract
The introduction of alkyne moieties into peptides remains in demand as it represents a promising approach for further structural diversification of peptides. Herein, we describe the Pd(II)-catalyzed C(sp3)-H alkynylation of Ala-Asn-embedded di- and tripeptides using Asn as the endogenous lead group. In addition, a key building block for the glycopeptide Tyc4PG-14 and Tyc4PG-15 was produced by our methodology.
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Affiliation(s)
- Xing-Xing Ding
- 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
- College of Chemistry and Material Science, Sichuan Normal University, Chengdu, Sichuan 610066, China
| | - Bo-Quan Ren
- College of Chemistry and Material Science, Sichuan Normal University, Chengdu, Sichuan 610066, China
| | - Bing-Tong Li
- 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
| | - Zhao-Jiong Pang
- 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
| | - Yan-Jun Xu
- College of Chemistry and Material Science, Sichuan Normal University, Chengdu, Sichuan 610066, 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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5
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Dutta U, Prakash G, Devi K, Borah K, Zhang X, Maiti D. Directing group assisted para-selective C-H alkynylation of unbiased arenes enabled by rhodium catalysis. Chem Sci 2023; 14:11381-11388. [PMID: 37886091 PMCID: PMC10599460 DOI: 10.1039/d3sc03528j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Accepted: 09/18/2023] [Indexed: 10/28/2023] Open
Abstract
Regioselective C-H alkynylation of arenes via C-H activation is challenging yet a highly desirable transformation. In this regard, directing group assisted C(sp2)-H alkynylation of arenes offers a unique opportunity to ensure precise regioselectivity. While the existing methods are mainly centered around ortho-C-H alkynylation and a few for meta-C-H alkynylation, the DG-assisted para-selective C-H alkynylation is yet to be reported. Herein we disclose the first report on Rh-catalyzed para-C-H alkynylation of sterically and electronically unbiased arenes. The para-selectivity is achieved with the assistance of a cyano-based directing template and the selectivity remained unaltered irrespective of the steric and electronic influence of the substituents. The post-synthetic modification of synthesized para-alkynylated arenes is also demonstrated. The mechanistic intricacies of the developed protocol are elucidated through experimental and computational studies.
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Affiliation(s)
- Uttam Dutta
- IIT Bombay, Department of Chemistry Powai Mumbai 400076 India
| | - Gaurav Prakash
- IIT Bombay, Department of Chemistry Powai Mumbai 400076 India
| | - Kirti Devi
- IIT Bombay, Department of Chemistry Powai Mumbai 400076 India
| | - Kongkona Borah
- IIT Bombay, Department of Chemistry Powai Mumbai 400076 India
| | - Xinglong Zhang
- Institute of High Performance Computing (IHPC), Agency for Science, Technology and Research (A*STAR) Singapore Singapore
| | - Debabrata Maiti
- IIT Bombay, Department of Chemistry Powai Mumbai 400076 India
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6
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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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7
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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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8
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Zhou J, Jiao T, Fu Q, Wang J, Lu J, Yang L, Wei J, Wei S, Cong X, Hao N. Catalytic C-H alkynylation of benzylamines and aldehydes with aldimine-directing groups generated in situ. Chem Commun (Camb) 2023; 59:6355-6358. [PMID: 37139669 DOI: 10.1039/d3cc01414b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Iridium-catalysed regioselective C-H alkynylation of unprotected primary benzylamines and aliphatic aldehydes has been achieved using in situ-installed aldimine directing groups. This protocol provides a straightforward route for the synthesis of the alkynylated primary benzylamine and aliphatic aldehyde derivatives, featuring good substrate compatibility and high regioselectivity.
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Affiliation(s)
- Jiao Zhou
- Green Pharmaceutical Technology Key Laboratory of Luzhou, Central Nervous System Drug Key Laboratory of Sichuan Province, Department of Medicinal Chemistry, School of Pharmacy, Southwest Medical University, Luzhou 646000, China.
| | - Tenggang Jiao
- Green Pharmaceutical Technology Key Laboratory of Luzhou, Central Nervous System Drug Key Laboratory of Sichuan Province, Department of Medicinal Chemistry, School of Pharmacy, Southwest Medical University, Luzhou 646000, China.
| | - Qiang Fu
- Green Pharmaceutical Technology Key Laboratory of Luzhou, Central Nervous System Drug Key Laboratory of Sichuan Province, Department of Medicinal Chemistry, School of Pharmacy, Southwest Medical University, Luzhou 646000, China.
| | - Jun Wang
- Green Pharmaceutical Technology Key Laboratory of Luzhou, Central Nervous System Drug Key Laboratory of Sichuan Province, Department of Medicinal Chemistry, School of Pharmacy, Southwest Medical University, Luzhou 646000, China.
| | - Ji Lu
- Green Pharmaceutical Technology Key Laboratory of Luzhou, Central Nervous System Drug Key Laboratory of Sichuan Province, Department of Medicinal Chemistry, School of Pharmacy, Southwest Medical University, Luzhou 646000, China.
| | - Lin Yang
- Green Pharmaceutical Technology Key Laboratory of Luzhou, Central Nervous System Drug Key Laboratory of Sichuan Province, Department of Medicinal Chemistry, School of Pharmacy, Southwest Medical University, Luzhou 646000, China.
| | - Jun Wei
- Green Pharmaceutical Technology Key Laboratory of Luzhou, Central Nervous System Drug Key Laboratory of Sichuan Province, Department of Medicinal Chemistry, School of Pharmacy, Southwest Medical University, Luzhou 646000, China.
| | - Siping Wei
- Green Pharmaceutical Technology Key Laboratory of Luzhou, Central Nervous System Drug Key Laboratory of Sichuan Province, Department of Medicinal Chemistry, School of Pharmacy, Southwest Medical University, Luzhou 646000, China.
| | - Xuefeng Cong
- Institute of Molecular Plus, Tianjin University, 92 Weijin Road, Tianjin, 300072, China.
| | - Na Hao
- Green Pharmaceutical Technology Key Laboratory of Luzhou, Central Nervous System Drug Key Laboratory of Sichuan Province, Department of Medicinal Chemistry, School of Pharmacy, Southwest Medical University, Luzhou 646000, China.
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9
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Dong J, Lei Y, Hu Q, Zong L, Zhang K, Zhang Y, Hu Y. Fused diethynylbenzenes and phenanthrenes via arynes with alkynylsilanes. Org Biomol Chem 2023; 21:2715-2719. [PMID: 36722919 DOI: 10.1039/d2ob02046g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
A method for the hydroalkynylation and catalytic cyclization reactions of hexadehydro-Diels-Alder-derived benzynes is described. Diethynylbenzene derivatives are generated in a one-step reaction via trimethylsilyl-alkyne groups with benzyne formed by heating the appropriate tetrayne substrate. Trimethyl(phenylethynyl)silane loses TMS and binds to the electron-deficient site on HDDA-derived benzynes, and then phenanthrene was synthesized under mild reaction conditions by transition-metal-free, base promoted intramolecular cyclization.
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Affiliation(s)
- Jie Dong
- Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Key Laboratory of Molecular-Based Materials, School of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241000, China.
| | - Yu Lei
- Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Key Laboratory of Molecular-Based Materials, School of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241000, China.
| | - Qiong Hu
- Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Key Laboratory of Molecular-Based Materials, School of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241000, China.
| | - Lingli Zong
- Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Key Laboratory of Molecular-Based Materials, School of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241000, China.
| | - Ke Zhang
- Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Key Laboratory of Molecular-Based Materials, School of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241000, China.
| | - Yajuan Zhang
- Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Key Laboratory of Molecular-Based Materials, School of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241000, China.
| | - Yimin Hu
- Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Key Laboratory of Molecular-Based Materials, School of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241000, China.
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10
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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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11
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Sasmal S, Prakash G, Dutta U, Laskar R, Lahiri GK, Maiti D. Directing group assisted rhodium catalyzed meta-C-H alkynylation of arenes. Chem Sci 2022; 13:5616-5621. [PMID: 35694332 PMCID: PMC9116288 DOI: 10.1039/d2sc00982j] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Accepted: 04/08/2022] [Indexed: 11/21/2022] Open
Abstract
Site-selective C-H alkynylation of arenes to produce aryl alkynes is a highly desirable transformation due to the prevalence of aryl alkynes in various natural products, drug molecules and in materials. To ensure site-selective C-H functionalization, directing group (DG) assisted C-H activation has been evolved as a useful synthetic tool. In contrast to DG-assisted ortho-C-H activation, distal meta-C-H activation is highly challenging and has attracted significant attention in recent years. However, developments are majorly focused on Pd-based catalytic systems. In order to diversify the scope of distal meta-C-H functionalization, herein we disclosed the first Rh(i) catalyzed meta-C-H alkynylation protocol through the inverse Sonogashira coupling reaction. The protocol is compatible with various substrate classes which include phenylacetic acids, hydrocinnamic acids, 2-phenyl benzoic acids, 2-phenyl phenols, benzyl sulfonates and ether-based scaffolds. The post-synthetic modification of meta-alkynylated arenes is also demonstrated through DG-removal as well as functional group interconversion.
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Affiliation(s)
- Sheuli Sasmal
- IIT Bombay, Department of Chemistry Powai Mumbai 400076 India
| | - Gaurav Prakash
- IIT Bombay, Department of Chemistry Powai Mumbai 400076 India
| | - Uttam Dutta
- IIT Bombay, Department of Chemistry Powai Mumbai 400076 India
| | - Ranjini Laskar
- IIT Bombay, Department of Chemistry Powai Mumbai 400076 India
| | | | - Debabrata Maiti
- IIT Bombay, Department of Chemistry Powai Mumbai 400076 India
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12
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Fernández-Canelas P, Barrio P, González JM. Merging gold catalysis and haloethynyl frames: emphasis on halide-shift processes. Tetrahedron Lett 2022. [DOI: 10.1016/j.tetlet.2022.153857] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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13
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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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14
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Yan T, Li Y, Huang G, Ni S, Dang L. Reaction Mechanism Study on Reactions of Phenylacetylenes with HSnEt3 Promoted by B(C6F5)3 with/without DABCO. Org Chem Front 2022. [DOI: 10.1039/d2qo00375a] [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
There are great variety of transformations for phenylacetylenes. Most efforts have been focused on the dehydrogenative coupling, although nucleophilic addition is often observed as the side reaction. The selectivity of...
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15
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Xu Y, Wu Z, Wu X, Zhu C. Transition-Metal Free Radical-Mediated C—H Bond Alkynylation and Allylation of Ethers, Aldehydes and Amides. CHINESE J ORG CHEM 2022. [DOI: 10.6023/cjoc202207014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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16
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Vanaparthi S, Mamta, Yadav J, Pawar AP, Iype E, Rana S, Kumar I. Two-pot synthesis and photophysical studies of 1,6-disubstituted 5-aza-indoles from succinaldehyde and N-aryl propargylic-imines. Org Biomol Chem 2021; 19:10601-10610. [PMID: 34859806 DOI: 10.1039/d1ob01949j] [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 two-pot synthesis of 5-aza-indoles has been developed from aqueous succinaldehyde and N-aryl propargylic-imines. This overall protocol involves: (i) the metal-free [3 + 2] annulation of aqueous succinaldehyde and N-aryl propargylic-imines to access 2-alkynyl-pyrrole-3-aldehydes and (ii) Ag-catalyzed 6-endo-dig-cyclization to obtain substituted 5-aza-indoles in the second pot. The 5-aza-indoles showed engaging photophysical activities, and the practicality of this pot-economic gram-scale synthesis has been demonstrated.
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Affiliation(s)
- Satheeshvarma Vanaparthi
- Department of Chemistry, Birla Institute of Technology and Science, Pilani 333 031, Rajasthan, India.
| | - Mamta
- Department of Chemistry, Birla Institute of Technology and Science, Pilani 333 031, Rajasthan, India.
| | - Jyothi Yadav
- Department of Chemistry, Birla Institute of Technology and Science, Pilani 333 031, Rajasthan, India.
| | - Amol Prakash Pawar
- Department of Chemistry, Birla Institute of Technology and Science, Pilani 333 031, Rajasthan, India.
| | - Eldhose Iype
- Department of Chemical Engineering, BITS Pilani, Dubai Campus, Dubai, United Arab Emirates
| | - Sravendra Rana
- University of Petroleum & Energy Studies (UPES), School of Engineering, Energy Acres, Bidholi, Dehradun, 248007, India
| | - Indresh Kumar
- Department of Chemistry, Birla Institute of Technology and Science, Pilani 333 031, Rajasthan, India.
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17
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Li R, Dong G. Redox‐Neutral Vicinal Difunctionalization of Five‐Membered Heteroarenes with Dual Electrophiles. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202110971] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Renhe Li
- Department of Chemistry University of Chicago Chicago IL 60637 USA
| | - Guangbin Dong
- Department of Chemistry University of Chicago Chicago IL 60637 USA
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18
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Li R, Dong G. Redox-Neutral Vicinal Difunctionalization of Five-Membered Heteroarenes with Dual Electrophiles. Angew Chem Int Ed Engl 2021; 60:26184-26191. [PMID: 34591355 DOI: 10.1002/anie.202110971] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2021] [Revised: 09/28/2021] [Indexed: 01/23/2023]
Abstract
A new reaction mode of palladium/norbornene (Pd/NBE) cooperative catalysis is reported involving the selective coupling of two different carbon-based electrophiles for vicinal double C-H functionalization of five-membered heteroarenes in a site-selective and redox-neutral manner. The key is to use alkynyl bromides as the second electrophile, which allows vicinal difunctionalization of a wide range of heteroarenes including pyrroles, thiophenes and furans at their C4 and C5 positions. One- or two-step tetrafunctionalizations of simple pyrrole and thiophene have also been realized. The C2-substituted NBEs prove most effective in these reactions, and the mechanistic exploration discloses the origin of the high selectivity of this transformation. Synthetic utility of this method has been exemplified in the concise preparations of thiophene-containing organic materials and a protein kinase inhibitor analogue. Preliminary success has also been achieved in a direct annulation event, using a tethered ketone as the second electrophile.
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Affiliation(s)
- Renhe Li
- Department of Chemistry, University of Chicago, Chicago, IL, 60637, USA
| | - Guangbin Dong
- Department of Chemistry, University of Chicago, Chicago, IL, 60637, USA
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19
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Tan E, Montesinos-Magraner M, García-Morales C, Mayans JG, Echavarren AM. Rhodium-catalysed ortho-alkynylation of nitroarenes. Chem Sci 2021; 12:14731-14739. [PMID: 34820088 PMCID: PMC8597868 DOI: 10.1039/d1sc04527j] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Accepted: 10/11/2021] [Indexed: 12/29/2022] Open
Abstract
The ortho-alkynylation of nitro-(hetero)arenes takes place in the presence of a Rh(iii) catalyst to deliver a wide variety of alkynylated nitroarenes regioselectively. These interesting products could be further derivatized by selective reduction of the nitro group or palladium-catalysed couplings. Experimental and computational mechanistic studies demonstrate that the reaction proceeds via a turnover-limiting electrophilic C-H metalation ortho to the strongly electron-withdrawing nitro group.
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Affiliation(s)
- Eric Tan
- Institute of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology (BIST) Av. Països Catalans 16 43007 Tarragona Spain
- Departament de Química Analítica i Química Orgànica, Universitat Rovira i Virgili C/ Marcel·lí Domingo s/n 43007 Tarragona Spain
| | - Marc Montesinos-Magraner
- Institute of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology (BIST) Av. Països Catalans 16 43007 Tarragona Spain
| | - Cristina García-Morales
- Institute of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology (BIST) Av. Països Catalans 16 43007 Tarragona Spain
- Departament de Química Analítica i Química Orgànica, Universitat Rovira i Virgili C/ Marcel·lí Domingo s/n 43007 Tarragona Spain
| | - Joan Guillem Mayans
- Institute of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology (BIST) Av. Països Catalans 16 43007 Tarragona Spain
- Departament de Química Analítica i Química Orgànica, Universitat Rovira i Virgili C/ Marcel·lí Domingo s/n 43007 Tarragona Spain
| | - Antonio M Echavarren
- Institute of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology (BIST) Av. Països Catalans 16 43007 Tarragona Spain
- Departament de Química Analítica i Química Orgànica, Universitat Rovira i Virgili C/ Marcel·lí Domingo s/n 43007 Tarragona Spain
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20
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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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21
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Yadav N, Sangwan S, Kumar R, Chauhan S, Duhan A, Singh A, Arya RK. Comprehensive Overview of Progress in Functionalization of 2‐Pyridone and 2, 4 ‐Dihydroxy Pyridine: Key Constituents of Vital Natural Products. ChemistrySelect 2021. [DOI: 10.1002/slct.202102941] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Neelam Yadav
- Department of Chemistry Chaudhary Charan Singh Haryana Agricultural University Hisar Haryana India 125004
| | - Sarita Sangwan
- Department of Chemistry Chaudhary Charan Singh Haryana Agricultural University Hisar Haryana India 125004
| | - Ravi Kumar
- Department of Chemistry Chaudhary Charan Singh Haryana Agricultural University Hisar Haryana India 125004
- MAP Section Department of Genetics and Plant Breeding Chaudhary Charan Singh Haryana Agricultural University Hisar Haryana India 125004
| | - Sonu Chauhan
- Department of Chemistry Chaudhary Charan Singh Haryana Agricultural University Hisar Haryana India 125004
| | - Anil Duhan
- Department of Chemistry Chaudhary Charan Singh Haryana Agricultural University Hisar Haryana India 125004
| | - Ajay Singh
- Department of Chemistry Chaudhary Charan Singh Haryana Agricultural University Hisar Haryana India 125004
| | - Rajesh K. Arya
- MAP Section Department of Genetics and Plant Breeding Chaudhary Charan Singh Haryana Agricultural University Hisar Haryana India 125004
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22
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Zhao Y, Guo X, Zhang R, Li S, Chen T, Sun X. CF 3CO 2H-Catalyzed Synthesis of 3-Alkynylpyrrole Derivatives and Their Controlled Reduction. J Org Chem 2021; 86:15568-15576. [PMID: 34648289 DOI: 10.1021/acs.joc.1c02078] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
A transition-metal-free methodology employing nitroenynes and enaminones has been developed to access 3-alkynylpyrrole derivatives. This mild cyclization reaction might proceed through the nucleophilic addition, intramolecular cyclization, and the subsequent elimination processes. The protocol features a broad substrate scope, good selectivity, and functional group tolerance. Notably, the advantage of this method is also highlighted by the controlled reduction to generate alkenyl- or alkylpyrrole derivatives in good to excellent yields.
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Affiliation(s)
- Yulei Zhao
- Shandong Key Laboratory of Life-Organic Analysis, Key Laboratory of Pharmaceutical Intermediates and Analysis of Natural Medicine, School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, China
| | - Xuqiang Guo
- Shandong Key Laboratory of Life-Organic Analysis, Key Laboratory of Pharmaceutical Intermediates and Analysis of Natural Medicine, School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, China
| | - Ruihua Zhang
- Shandong Key Laboratory of Life-Organic Analysis, Key Laboratory of Pharmaceutical Intermediates and Analysis of Natural Medicine, School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, China
| | - Shuai Li
- Shandong Key Laboratory of Life-Organic Analysis, Key Laboratory of Pharmaceutical Intermediates and Analysis of Natural Medicine, School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, China
| | - Tingting Chen
- Shandong Key Laboratory of Life-Organic Analysis, Key Laboratory of Pharmaceutical Intermediates and Analysis of Natural Medicine, School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, China
| | - Xuejun Sun
- Shandong Key Laboratory of Life-Organic Analysis, Key Laboratory of Pharmaceutical Intermediates and Analysis of Natural Medicine, School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, China
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23
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Kajiwara R, Hirano K, Miura M. Copper-mediated Regioselective C–H Cyanation of Phenols with Assistance of Bipyridine-type Bidentate Auxiliary. CHEM LETT 2021. [DOI: 10.1246/cl.210439] [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)
- Rikuo Kajiwara
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
| | - Koji Hirano
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
| | - Masahiro Miura
- Innovative Catalysis Science Division, Institute for Open and Transdisciplinary Research Initiatives (ICS-OTRI), Osaka University, Suita, Osaka 565-0871, Japan
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24
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An J, Intano J, Richard A, Kim T, Gascón JA, Howell AR. Easily accessible non-aromatic heterocycles with handles: 4-bromo-2,3-dihydrofurans from 1,2-dibromohomoallylic alcohols. Chem Sci 2021; 12:10347-10353. [PMID: 34377420 PMCID: PMC8336482 DOI: 10.1039/d1sc01013a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2021] [Accepted: 06/28/2021] [Indexed: 11/21/2022] Open
Abstract
The first general preparation of 4-bromo-2,3-dihydrofurans is reported. These non-aromatic heterocycles containing a useful coupling handle are accessed via Cu-catalyzed intramolecular cyclization of 1,2-dibromohomoallylic alcohols, which are themselves available in just two steps from aromatic and aliphatic aldehydes and ketones. Molecular dynamics simulations using the simple substrates and key geometric parameters provide a rationale for the selectivities observed. The synthetic utility of the 4-bromodihydrofurans is also demonstrated.
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Affiliation(s)
- Jason An
- Department of Chemistry, University of Connecticut Storrs CT 06269 USA
| | - Jose Intano
- Department of Chemistry, University of Connecticut Storrs CT 06269 USA
| | - Alissa Richard
- Department of Chemistry, University of Connecticut Storrs CT 06269 USA
| | - Taehyun Kim
- Department of Chemistry, University of Connecticut Storrs CT 06269 USA
| | - José A Gascón
- Department of Chemistry, University of Connecticut Storrs CT 06269 USA
| | - Amy R Howell
- Department of Chemistry, University of Connecticut Storrs CT 06269 USA
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25
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Jagtap RA, Punji B. Nickel-Catalyzed C-H Bond Functionalization of Azoles and Indoles. CHEM REC 2021; 21:3573-3588. [PMID: 34075686 DOI: 10.1002/tcr.202100113] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Revised: 05/10/2021] [Accepted: 05/11/2021] [Indexed: 10/21/2022]
Abstract
Direct C-H functionalization of privileged and biologically relevant azoles and indoles represents an important chemical transformation in molecular science. Despite significant progress in the palladium-catalyzed regioselective C-H functionalization of azoles and indoles, the use of abundant and less expensive nickel catalyst is underdeveloped. In the recent past, the nickel-catalyzed regioselective C-H alkylation, arylation, alkenylation and alkynylation of azoles and indoles have been substantially explored, which can be applied to the complex organic molecule synthesis. In this Account, we summarize the developments in nickel-catalyzed regioselective functionalization of azoles and indoles with a considerable focus on the reaction mechanism.
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Affiliation(s)
- Rahul A Jagtap
- Organometallic Synthesis and Catalysis Lab, Chemical Engineering Division, CSIR-National Chemical Laboratory (CSIR-NCL), Dr. Homi Bhabha Road, Pune, 411 008, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Benudhar Punji
- Organometallic Synthesis and Catalysis Lab, Chemical Engineering Division, CSIR-National Chemical Laboratory (CSIR-NCL), Dr. Homi Bhabha Road, Pune, 411 008, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
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26
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Li Y, Zhou M, Park S, Dang L. Comparative DFT Study on Dehydrogenative C(sp)-H Elementation (E = Si, Ge, and Sn) of Terminal Alkynes Catalyzed by a Cationic Ruthenium(II) Thiolate Complex. Inorg Chem 2021; 60:6228-6238. [PMID: 33852282 DOI: 10.1021/acs.inorgchem.0c03695] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Described herein is a comparative theoretical study of dehydrogenative C(sp)-H functionalizations of a terminal alkyne with group-14-based hydrides (HEEt3; E = Si, Ge, Sn) catalyzed by an Ohki-Tatsumi complex-a cationic Ru(II) complex with a tethered thiolate ligand ([Ru-S] = [(DmpS)Ru(PiPr3)][BAr4F]; Dmp = 2,6-(dimesityl)2C6H3; ArF = 3,5-(CF3)2C6H3). The calculations indicate that the energy barriers for heterolytic cleavage of the H-EEt3 bonds at the Ru-S sites of the Ohki-Tatsumi complex highly vary depending on the group 14 elements from 3.8 kcal/mol (E = Sn) to 10.5 kcal/mol (E = Ge) and 18.5 kcal/mol (E = Si), where Ru and S elements cooperatively serve as the Lewis acid and base, respectively. Likewise, the transfer of the group 14 cation (Et3E+) to the C-C triple bond to generate the β-element-stabilized vinyl cations-the rate-determining step (RDS) of the overall reaction-is predicted to be susceptible to the element's identity [Ea = 36.8 for Sn < 42.9 and Ge < 50.7 for Si (kcal/mol)]. The key transition states involved in the RDS are compared in terms of energy and structure within each system of the group 14 hydrides. The distortion/interaction-activation strain (DIAS) model analysis of the transition states responsible for dehydrogenative stannylation and hydrostannation of a terminal alkyne sheds light on the origin of the experimentally observed kinetic preference toward dehydrogenative C-H stannylation over hydrostannation.
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Affiliation(s)
- Yahui Li
- Department of Chemistry and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province, Shantou University, Shantou, Guangdong 515063, P. R. China
| | - Miaomiao Zhou
- Department of Chemistry and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province, Shantou University, Shantou, Guangdong 515063, P. R. China
| | - Sehoon Park
- Department of Chemistry, Guangdong Technion Israel Institute of Technology, Shantou, Guangdong 515063, China.,Technion-Israel Institute of Technology, Technion City, 32000 Haifa, Israel
| | - Li Dang
- Department of Chemistry and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province, Shantou University, Shantou, Guangdong 515063, P. R. China
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27
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Li X, Liu L, Huang T, Tang Z, Li C, Li W, Zhang T, Li Z, Chen T. Palladium-Catalyzed Decarbonylative Sonogashira Coupling of Terminal Alkynes with Carboxylic Acids. Org Lett 2021; 23:3304-3309. [PMID: 33878267 DOI: 10.1021/acs.orglett.1c00768] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
A direct decarbonylative Sonogashira coupling of terminal alkynes with carboxylic acids was achieved through palladium catalysis. This reaction did not use overstoichiometric oxidants, thus overcoming the homocoupling issue of terminal alkynes. Under the reaction conditions, a wide range of carboxylic acids including those bioactive ones could couple readily with various terminal alkynes, thus providing a relative general method for preparing internal alkynes.
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Affiliation(s)
- Xinyi Li
- Key Laboratory of Ministry of Education for Advanced Materials in Tropical Island Resources, Hainan Provincial Key Lab of Fine Chem, Hainan Provincial Fine Chemical Engineering Research Center, Hainan University, Haikou 570228, China
| | - Long Liu
- Key Laboratory of Ministry of Education for Advanced Materials in Tropical Island Resources, Hainan Provincial Key Lab of Fine Chem, Hainan Provincial Fine Chemical Engineering Research Center, Hainan University, Haikou 570228, China
| | - Tianzeng Huang
- Key Laboratory of Ministry of Education for Advanced Materials in Tropical Island Resources, Hainan Provincial Key Lab of Fine Chem, Hainan Provincial Fine Chemical Engineering Research Center, Hainan University, Haikou 570228, China
| | - Zhi Tang
- Key Laboratory of Ministry of Education for Advanced Materials in Tropical Island Resources, Hainan Provincial Key Lab of Fine Chem, Hainan Provincial Fine Chemical Engineering Research Center, Hainan University, Haikou 570228, China
| | - Chunya Li
- Key Laboratory of Ministry of Education for Advanced Materials in Tropical Island Resources, Hainan Provincial Key Lab of Fine Chem, Hainan Provincial Fine Chemical Engineering Research Center, Hainan University, Haikou 570228, China
| | - Wenhui Li
- Key Laboratory of Ministry of Education for Advanced Materials in Tropical Island Resources, Hainan Provincial Key Lab of Fine Chem, Hainan Provincial Fine Chemical Engineering Research Center, Hainan University, Haikou 570228, China
| | - Tao Zhang
- Key Laboratory of Ministry of Education for Advanced Materials in Tropical Island Resources, Hainan Provincial Key Lab of Fine Chem, Hainan Provincial Fine Chemical Engineering Research Center, Hainan University, Haikou 570228, China
| | - Zhaohui Li
- Key Laboratory of Ministry of Education for Advanced Materials in Tropical Island Resources, Hainan Provincial Key Lab of Fine Chem, Hainan Provincial Fine Chemical Engineering Research Center, Hainan University, Haikou 570228, China
| | - Tieqiao Chen
- Key Laboratory of Ministry of Education for Advanced Materials in Tropical Island Resources, Hainan Provincial Key Lab of Fine Chem, Hainan Provincial Fine Chemical Engineering Research Center, Hainan University, Haikou 570228, China
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28
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Cobalt-catalyzed C H activation of N-carbamoyl indoles or benzamides with maleimides: Synthesis of imidazo[1,5-a]indole- or isoindolone-incorporated spirosuccinimides. Tetrahedron Lett 2021. [DOI: 10.1016/j.tetlet.2021.152872] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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29
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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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30
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Tan E, Nannini LJ, Stoica O, Echavarren AM. Rh-Catalyzed Ortho C–H Alkynylation of Aromatic Aldehydes. Org Lett 2021; 23:1263-1268. [DOI: 10.1021/acs.orglett.0c04243] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Eric Tan
- Institute of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007 Tarragona, Spain
| | - Leonardo J. Nannini
- Institute of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007 Tarragona, Spain
| | - Otilia Stoica
- 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
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31
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Li J, He D, Lin Z, Wu W, Jiang H. Recent advances in NHC–palladium catalysis for alkyne chemistry: versatile synthesis and applications. Org Chem Front 2021. [DOI: 10.1039/d1qo00111f] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
This review summarizes the recent developments in NHC–palladium catalysis for alkyne chemistry: versatile synthesis and applications.
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Affiliation(s)
- Jianxiao Li
- Key Laboratory of Functional Molecular Engineering of Guangdong Province
- School of Chemistry and Chemical Engineering
- South China University of Technology
- Guangzhou 510640
- China
| | - Dan He
- Key Laboratory of Functional Molecular Engineering of Guangdong Province
- School of Chemistry and Chemical Engineering
- South China University of Technology
- Guangzhou 510640
- China
| | - Zidong Lin
- Key Laboratory of Functional Molecular Engineering of Guangdong Province
- School of Chemistry and Chemical Engineering
- South China University of Technology
- Guangzhou 510640
- China
| | - Wanqing Wu
- Key Laboratory of Functional Molecular Engineering of Guangdong Province
- School of Chemistry and Chemical Engineering
- South China University of Technology
- Guangzhou 510640
- China
| | - Huanfeng Jiang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province
- School of Chemistry and Chemical Engineering
- South China University of Technology
- Guangzhou 510640
- China
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32
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Huang A, Han Y, Wu P, Gao Y, Huo Y, Chen Q, Li X. Ligand-accelerated site-selective Csp 2–H and Csp 3–H alkynylations of alcohols via Pd( ii) catalysis. Org Chem Front 2021. [DOI: 10.1039/d1qo01095f] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A ligand accelerated site-selective C–H alkynylation, including secondary and tertiary Csp3–H alkynylation of weakly coordinated yet synthetically promising alcohols, via putative 6, 7 and 8-membered palladacycle intermediates, was developed.
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Affiliation(s)
- Aidong Huang
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, No. 100 Waihuan Xi Road Guangzhou Higher Education Mega Center, Guangzhou, 510006, China
| | - Yishen Han
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, No. 100 Waihuan Xi Road Guangzhou Higher Education Mega Center, Guangzhou, 510006, China
| | - Peiqing Wu
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, No. 100 Waihuan Xi Road Guangzhou Higher Education Mega Center, Guangzhou, 510006, China
| | - Yang Gao
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, No. 100 Waihuan Xi Road Guangzhou Higher Education Mega Center, Guangzhou, 510006, China
| | - Yanping Huo
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, No. 100 Waihuan Xi Road Guangzhou Higher Education Mega Center, Guangzhou, 510006, China
| | - Qian Chen
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, No. 100 Waihuan Xi Road Guangzhou Higher Education Mega Center, Guangzhou, 510006, China
| | - Xianwei Li
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, No. 100 Waihuan Xi Road Guangzhou Higher Education Mega Center, Guangzhou, 510006, China
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33
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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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34
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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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35
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Liu C, Xu J, Wu G. Au-Catalyzed intermolecular (3 + 2 + 1) and (5 + 2) cycloaddition for the synthesis of 1,4-dioxenes and 4,7-dihydrooxepines. Chem Commun (Camb) 2020; 56:12993-12996. [PMID: 32996972 DOI: 10.1039/d0cc05059h] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
1,4-Dioxenes and 4,7-dihydrooxepines present interesting potential as motifs for the incorporation of biologically relevant molecules, agrochemicals and materials. In this study, two efficient intermolecular (3 + 2 + 1) and (5 + 2) cycloadditions for the synthesis of 1,4-dioxenes and 4,7-dihydrooxepines are achieved with gold catalysis.
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Affiliation(s)
- Congrong Liu
- School of Environment Engineering, Nanjing Institute of Technology, 1 Hongjingdadao, Nanjing, Jiangsu 211167, China.
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36
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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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37
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Zhang JS, Liu L, Chen T, Han LB. Cross-Dehydrogenative Alkynylation: A Powerful Tool for the Synthesis of Internal Alkynes. CHEMSUSCHEM 2020; 13:4776-4794. [PMID: 32667732 DOI: 10.1002/cssc.202001165] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2020] [Revised: 07/13/2020] [Indexed: 06/11/2023]
Abstract
Alkynes are among the most fundamentally important organic compounds and are widely used in synthetic chemistry, biochemistry, and materials science. Thus, the development of an efficient and sustainable method for the preparation of alkynes has been a central concern in organic synthesis. Cross-dehydrogenative coupling utilizing E-H and Z-H bonds in two different molecules can avoid the need for prefunctionalization of starting materials and has become one of the most straightforward methods for the construction of E-Z chemical bonds. This Review summarizes recent progress in the preparation of internal alkynes by cross-dehydrogenative coupling with terminal alkynes.
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Affiliation(s)
- Ji-Shu Zhang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, P. R. China
| | - Long Liu
- Key Laboratory of Ministry of Education for Advanced Materials in Tropical Island Resources, College of Chemical Engineering and Technology, Hainan University, Haikou, 570228, P. R. China
| | - Tieqiao Chen
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, P. R. China
- Key Laboratory of Ministry of Education for Advanced Materials in Tropical Island Resources, College of Chemical Engineering and Technology, Hainan University, Haikou, 570228, P. R. China
| | - Li-Biao Han
- Division of Chemistry, Faculty of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki, 3058571, Japan
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38
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García-Fernández PD, Iglesias-Sigüenza J, Rivero-Jerez PS, Díez E, Gómez-Bengoa E, Fernández R, Lassaletta JM. AuI-Catalyzed Hydroalkynylation of Haloalkynes. J Am Chem Soc 2020; 142:16082-16089. [DOI: 10.1021/jacs.0c07951] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Pedro D. García-Fernández
- Departamento de Química Orgánica, Universidad de Sevilla and Centro de Innovación en Química Avanzada (ORFEO−CINQA), Sevilla 41012, Spain
| | - Javier Iglesias-Sigüenza
- Departamento de Química Orgánica, Universidad de Sevilla and Centro de Innovación en Química Avanzada (ORFEO−CINQA), Sevilla 41012, Spain
| | - Paula S. Rivero-Jerez
- Departamento de Química Orgánica, Universidad de Sevilla and Centro de Innovación en Química Avanzada (ORFEO−CINQA), Sevilla 41012, Spain
| | - Elena Díez
- Departamento de Química Orgánica, Universidad de Sevilla and Centro de Innovación en Química Avanzada (ORFEO−CINQA), Sevilla 41012, Spain
| | - Enrique Gómez-Bengoa
- Departamento de Quı́mica Orgánica I, Universidad del Paı́s Vasco, UPV/EHU, San Sebastián 20080, Spain
| | - Rosario Fernández
- Departamento de Química Orgánica, Universidad de Sevilla and Centro de Innovación en Química Avanzada (ORFEO−CINQA), Sevilla 41012, Spain
| | - José M. Lassaletta
- Instituto de Investigaciones Químicas (CSIC-US) and Centro de Innovación en Química Avanzada (ORFEO−CINQA), Sevilla 41092, Spain
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39
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Kajiwara R, Takamatsu K, Hirano K, Miura M. Copper-Mediated Regioselective C–H Sulfenylation and Selenation of Phenols with Phenanthroline Bidentate Auxiliary. Org Lett 2020; 22:5915-5919. [DOI: 10.1021/acs.orglett.0c02012] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Rikuo Kajiwara
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
| | - Kazutaka Takamatsu
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
| | - Koji Hirano
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
| | - Masahiro Miura
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
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40
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Sobenina LN, Trofimov BA. Recent Strides in the Transition Metal-Free Cross-Coupling of Haloacetylenes with Electron-Rich Heterocycles in Solid Media. Molecules 2020; 25:E2490. [PMID: 32471258 PMCID: PMC7321414 DOI: 10.3390/molecules25112490] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2020] [Revised: 05/20/2020] [Accepted: 05/25/2020] [Indexed: 01/09/2023] Open
Abstract
The publications covering new, transition metal-free cross-coupling reactions of pyrroles with electrophilic haloacetylenes in solid medium of metal oxides and salts to regioselectively afford 2-ethynylpyrroles are discussed. The reactions proceed at room temperature without catalyst and base under solvent-free conditions. These ethynylation reactions seem to be particularly important, since the common Sonogashira coupling does not allow ethynylpyrroles with strong electron-withdrawing substituents at the acetylenic fragments to be synthesized. The results on the behavior of furans, thiophenes, and pyrazoles under the conditions of these reactions are also provided. The reactivity and structural peculiarities of nucleophilic addition to the activated acetylene moiety of the novel C-ethynylpyrroles are considered.
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Affiliation(s)
| | - Boris A. Trofimov
- A.E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch, Russian Academy of Sciences, 1 Favorsky Str., 664033 Irkutsk, Russia;
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41
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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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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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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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44
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Li X, Ouyang W, Nie J, Ji S, Chen Q, Huo Y. Recent Development on Cp*Ir(III)‐Catalyzed C−H Bond Functionalization. ChemCatChem 2020. [DOI: 10.1002/cctc.201902150] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Xianwei Li
- School of Chemical Engineering and Light Industry Guangdong University of Technology Guangzhou 510006 P. R. China
| | - Wensen Ouyang
- School of Chemical Engineering and Light Industry Guangdong University of Technology Guangzhou 510006 P. R. China
| | - Jianhong Nie
- School of Chemical Engineering and Light Industry Guangdong University of Technology Guangzhou 510006 P. R. China
| | - Shaomin Ji
- School of Chemical Engineering and Light Industry Guangdong University of Technology Guangzhou 510006 P. R. China
| | - Qian Chen
- School of Chemical Engineering and Light Industry Guangdong University of Technology Guangzhou 510006 P. R. China
| | - Yanping Huo
- School of Chemical Engineering and Light Industry Guangdong University of Technology Guangzhou 510006 P. R. China
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45
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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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46
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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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47
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Liu B, Ouyang W, Nie J, Gao Y, Feng K, Huo Y, Chen Q, Li X. Weak coordinated nitrogen functionality enabled regioselective C–H alkynylation via Pd(ii)/mono-N-protected amino acid catalysis. Chem Commun (Camb) 2020; 56:11255-11258. [DOI: 10.1039/d0cc04739b] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
By using mono-N-protected amino acid (MPAA) ligand under Pd(ii) catalysis, regioselective C–H alkynylation of weak coordinated nitrogen functionalities was developed with great efficiency, proceeding via 5, 6 and 7-membered palladacycle intermediates.
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Affiliation(s)
- Bifu Liu
- School of Chemistry and Material Engineering
- Huizhou University
- Huizhou
- China
| | - Wensen Ouyang
- School of Chemical Engineering and Light Industry
- Guangdong University of Technology
- Guangzhou
- China
| | - Jianhong Nie
- School of Chemical Engineering and Light Industry
- Guangdong University of Technology
- Guangzhou
- China
| | - Yang Gao
- School of Chemical Engineering and Light Industry
- Guangdong University of Technology
- Guangzhou
- China
| | - Kejun Feng
- School of Chemistry and Material Engineering
- Huizhou University
- Huizhou
- China
| | - Yanping Huo
- School of Chemical Engineering and Light Industry
- Guangdong University of Technology
- Guangzhou
- China
| | - Qian Chen
- School of Chemical Engineering and Light Industry
- Guangdong University of Technology
- Guangzhou
- China
| | - Xianwei Li
- School of Chemical Engineering and Light Industry
- Guangdong University of Technology
- Guangzhou
- China
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48
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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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49
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Takamatsu K, Hayashi Y, Kawauchi S, Hirano K, Miura M. Copper‐Mediated Decarboxylative C–H Arylation of Phenol Derivatives with
ortho
‐Nitrobenzoic Acids Using Phenanthroline‐Based Bidentate Auxiliary. ChemistrySelect 2019. [DOI: 10.1002/slct.201902860] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Kazutaka Takamatsu
- Department of Applied ChemistryGraduate School of EngineeringOsaka University, Suita Osaka 565-0871 Japan
| | - Yoshihiro Hayashi
- Department of Chemical Science and EngineeringSchool of Materials and Chemical TechnologyTokyo Institute of Technology, 2–12-1 O-okayama, Meguro-ku Tokyo 152-8552 Japan
| | - Susumu Kawauchi
- Department of Chemical Science and EngineeringSchool of Materials and Chemical TechnologyTokyo Institute of Technology, 2–12-1 O-okayama, Meguro-ku Tokyo 152-8552 Japan
| | - Koji Hirano
- Department of Applied ChemistryGraduate School of EngineeringOsaka University, Suita Osaka 565-0871 Japan
| | - Masahiro Miura
- Department of Applied ChemistryGraduate School of EngineeringOsaka University, Suita Osaka 565-0871 Japan
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50
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Li J, Yang S, Wu W, Jiang H. Palladium‐Catalyzed Cascade Cyclization/Alkynylation Reactions. Chem Asian J 2019; 14:4114-4128. [DOI: 10.1002/asia.201901202] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2019] [Revised: 10/19/2019] [Indexed: 01/01/2023]
Affiliation(s)
- Jianxiao Li
- Key Laboratory of Functional Molecular Engineering of Guangdong ProvinceSchool of Chemistry and Chemical EngineeringSouth China University of Technology Guangzhou 510640 China
| | - Shaorong Yang
- Key Laboratory of Functional Molecular Engineering of Guangdong ProvinceSchool of Chemistry and Chemical EngineeringSouth China University of Technology Guangzhou 510640 China
| | - Wanqing Wu
- Key Laboratory of Functional Molecular Engineering of Guangdong ProvinceSchool of Chemistry and Chemical EngineeringSouth China University of Technology Guangzhou 510640 China
| | - Huanfeng Jiang
- Key Laboratory of Functional Molecular Engineering of Guangdong ProvinceSchool of Chemistry and Chemical EngineeringSouth China University of Technology Guangzhou 510640 China
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