1
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Wootton JM, Tam JKF, Unsworth WP. Cascade ring expansion reactions for the synthesis of medium-sized rings and macrocycles. Chem Commun (Camb) 2024; 60:4999-5009. [PMID: 38655659 DOI: 10.1039/d4cc01303d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/26/2024]
Abstract
This Feature Article discusses recent advances in the development of cascade ring expansion reactions for the synthesis of medium-sized rings and macrocycles. Cascade ring expansion reactions have much potential for use in the synthesis of biologically important medium-sized rings and macrocycles, most notably as they don't require high dilution conditions, which are commonly used in established end-to-end macrocyclisation methods. Operation by cascade ring expansion method can allow large ring products to be accessed via rearrangements that proceed exclusively by normal-sized ring cyclisation steps. Ensuring that there is adequate thermodynamic driving force for ring expansion is a key challenge when designing such methods, especially for the expansion of normal-sized rings into medium-sized rings. This Article is predominantly focused on methods developed in our own laboratory, with selected works by other groups also discussed. Thermodynamic considerations, mechanism, reaction design, route planning and future perspective for this field are all covered.
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Affiliation(s)
- Jack M Wootton
- Department of Chemistry, University of York, Heslington, York, YO10 5DD, UK.
| | - Jerry K F Tam
- Department of Chemistry, University of York, Heslington, York, YO10 5DD, UK.
| | - William P Unsworth
- Department of Chemistry, University of York, Heslington, York, YO10 5DD, UK.
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2
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Luan YY, Li JY, Shi WY, Zhang Z, Jiao RQ, Chen X, Liu XY, Liang YM. Ruthenium-Catalyzed Difunctionalization of Vinyl Cyclopropanes for Double m-C(sp 2)-H/C-5(sp 3)-H Functionalization. Org Lett 2024; 26:3213-3217. [PMID: 38573591 DOI: 10.1021/acs.orglett.4c00806] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2024]
Abstract
With in-depth research on 1,2-difunctionalization, remote difunctionalization has garnered widespread attention for achieving multifunctionality. Herein, we report a strategy for achieving remote difunctionalization under mild conditions. This strategy exhibited good substrate suitability and functional group tolerance. In addition, the significance of this method is further evidenced by its successful application in scaling up and conducting additional transformations of target compounds. Mechanistic studies showed that a radical might be involved in this process.
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Affiliation(s)
- Yu-Yong Luan
- State Key Laboratory of Applied Organic Chemistry, School of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Jin-Ye Li
- State Key Laboratory of Applied Organic Chemistry, School of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Wei-Yu Shi
- State Key Laboratory of Applied Organic Chemistry, School of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Zhe Zhang
- State Key Laboratory of Applied Organic Chemistry, School of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Rui-Qiang Jiao
- State Key Laboratory of Applied Organic Chemistry, School of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Xi Chen
- State Key Laboratory of Applied Organic Chemistry, School of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Xue-Yuan Liu
- State Key Laboratory of Applied Organic Chemistry, School of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Yong-Min Liang
- State Key Laboratory of Applied Organic Chemistry, School of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
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3
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Zalessky I, Wootton JM, Tam JKF, Spurling DE, Glover-Humphreys WC, Donald JR, Orukotan WE, Duff LC, Knapper BJ, Whitwood AC, Tanner TFN, Miah AH, Lynam JM, Unsworth WP. A Modular Strategy for the Synthesis of Macrocycles and Medium-Sized Rings via Cyclization/Ring Expansion Cascade Reactions. J Am Chem Soc 2024; 146:5702-5711. [PMID: 38372651 PMCID: PMC10910531 DOI: 10.1021/jacs.4c00659] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2024] [Revised: 01/31/2024] [Accepted: 02/01/2024] [Indexed: 02/20/2024]
Abstract
Macrocycles and medium-sized rings are important in many scientific fields and technologies but are hard to make using current methods, especially on a large scale. Outlined herein is a strategy by which functionalized macrocycles and medium-sized rings can be prepared using cyclization/ring expansion (CRE) cascade reactions, without resorting to high dilution conditions. CRE cascade reactions are designed to operate exclusively via kinetically favorable 5-7-membered ring cyclization steps; this means that the problems typically associated with classical end-to-end macrocyclization reactions are avoided. A modular synthetic approach has been developed to facilitate the simple assembly of the requisite linear precursors, which can then be converted into an extremely broad range of functionalized macrocycles and medium-sized rings using one of nine CRE protocols.
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Affiliation(s)
- Illya Zalessky
- Department
of Chemistry, University of York, York, YO10 5DD U.K.
| | - Jack M. Wootton
- Department
of Chemistry, University of York, York, YO10 5DD U.K.
| | - Jerry K. F. Tam
- Department
of Chemistry, University of York, York, YO10 5DD U.K.
| | | | | | - James R. Donald
- Department
of Chemistry, University of York, York, YO10 5DD U.K.
| | - Will E. Orukotan
- Department
of Chemistry, University of York, York, YO10 5DD U.K.
| | - Lee C. Duff
- Department
of Chemistry, University of York, York, YO10 5DD U.K.
| | - Ben J. Knapper
- Department
of Chemistry, University of York, York, YO10 5DD U.K.
| | | | | | | | - Jason M. Lynam
- Department
of Chemistry, University of York, York, YO10 5DD U.K.
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4
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Orukotan WE, Palate KY, Pogrányi B, Bobinski P, Epton RG, Duff L, Whitwood AC, Grogan G, Lynam JM, Unsworth WP. Divergent Cascade Ring-Expansion Reactions of Acryloyl Imides. Chemistry 2024; 30:e202303270. [PMID: 37987097 DOI: 10.1002/chem.202303270] [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: 10/09/2023] [Revised: 11/16/2023] [Accepted: 11/21/2023] [Indexed: 11/22/2023]
Abstract
Macrocyclic and medium-sized ring ketones, lactones and lactams can all be made from common acryloyl imide starting materials through divergent, one-pot cascade ring-expansion reactions. Following either conjugate addition with an amine or nitromethane, or osmium(VIII)-catalysed dihydoxylation, rearrangement through a four-atom ring expansion takes place spontaneously to form the ring expanded products. A second ring expansion can also be performed following a second iteration of imide formation and alkene functionalisation/ring expansion. In the dihydroxylation series, three- or four-atom ring expansion can be performed selectively, depending on whether the reaction is under kinetic or thermodynamic control.
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Affiliation(s)
- Will E Orukotan
- Department of Chemistry, University of York, York, YO10 5DD, UK
| | | | - Balázs Pogrányi
- Department of Chemistry, University of York, York, YO10 5DD, UK
| | - Philipp Bobinski
- Organisch-Chemisches Institut, Universität Heidelberg, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
| | - Ryan G Epton
- Department of Chemistry, University of York, York, YO10 5DD, UK
| | - Lee Duff
- Department of Chemistry, University of York, York, YO10 5DD, UK
| | | | - Gideon Grogan
- Department of Chemistry, University of York, York, YO10 5DD, UK
| | - Jason M Lynam
- Department of Chemistry, University of York, York, YO10 5DD, UK
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5
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Chun J, Li Y, Xie X, Guo K, Zhao D, Chen K, Zhu Y. Photoinduced Copper-Catalyzed Enantioconvergent Remote Alkynylation via 1,4-Heteroaryl Migration. Org Lett 2023; 25:7739-7744. [PMID: 37851948 DOI: 10.1021/acs.orglett.3c03158] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2023]
Abstract
A photoinduced copper-catalyzed enantioconvergent remote alkynylation of N-hydroxyphthalimide esters with terminal alkynes via 1,4-heteroaryl migration has been developed. A broad scope of heteroaryl-tethered chiral alkynes has been synthesized with good regio- and enantioselectivities. The chiral-ligand-coordinated copper species plays a dual role as both the photoredox and cross-coupling catalyst. This methodology provides a new platform for enantioconvergent remote alkynylations.
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Affiliation(s)
- Jianlin Chun
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry, College of Sciences, Nanjing Agricultural University, Nanjing, Jiangsu 210095, People's Republic of China
| | - Yukun Li
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry, College of Sciences, Nanjing Agricultural University, Nanjing, Jiangsu 210095, People's Republic of China
| | - Xiaofei Xie
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry, College of Sciences, Nanjing Agricultural University, Nanjing, Jiangsu 210095, People's Republic of China
| | - Kang Guo
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry, College of Sciences, Nanjing Agricultural University, Nanjing, Jiangsu 210095, People's Republic of China
| | - Daoyuan Zhao
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry, College of Sciences, Nanjing Agricultural University, Nanjing, Jiangsu 210095, People's Republic of China
| | - Kang Chen
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry, College of Sciences, Nanjing Agricultural University, Nanjing, Jiangsu 210095, People's Republic of China
| | - Yingguang Zhu
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry, College of Sciences, Nanjing Agricultural University, Nanjing, Jiangsu 210095, People's Republic of China
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6
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Chen K, Zeng Q, Xie L, Xue Z, Wang J, Xu Y. Functional-group translocation of cyano groups by reversible C-H sampling. Nature 2023; 620:1007-1012. [PMID: 37364765 DOI: 10.1038/s41586-023-06347-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Accepted: 06/20/2023] [Indexed: 06/28/2023]
Abstract
Chemical transformations that introduce, remove or manipulate functional groups are ubiquitous in synthetic chemistry1. Unlike conventional functional-group interconversion reactions that swap one functionality for another, transformations that alter solely the location of functional groups are far less explored. Here, by photocatalytic, reversible C-H sampling, we report a functional-group translocation reaction of cyano (CN) groups in common nitriles, allowing for the direct positional exchange between a CN group and an unactivated C-H bond. The reaction shows high fidelity for 1,4-CN translocation, frequently contrary to inherent site selectivity in conventional C-H functionalizations. We also report the direct transannular CN translocation of cyclic systems, providing access to valuable structures that are non-trivial to obtain by other methods. Making use of the synthetic versatility of CN and a key CN translocation step, we showcase concise syntheses of building blocks of bioactive molecules. Furthermore, the combination of C-H cyanation and CN translocation allows access to unconventional C-H derivatives. Overall, the reported reaction represents a way to achieve site-selective C-H transformation reactions without requiring a site-selective C-H cleavage step.
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Affiliation(s)
- Ken Chen
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing, China
| | - Qingrui Zeng
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing, China
| | - Longhuan Xie
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing, China
| | - Zisheng Xue
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing, China
| | - Jianbo Wang
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing, China
| | - Yan Xu
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing, China.
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7
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Singha T, Kadam GA, Hari DP. Photocatalyzed Dowd-Beckwith radical-polar crossover reaction for the synthesis of medium-sized carbocyclic compounds. Chem Sci 2023; 14:6930-6935. [PMID: 37389258 PMCID: PMC10306080 DOI: 10.1039/d3sc01908j] [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: 04/12/2023] [Accepted: 05/24/2023] [Indexed: 07/01/2023] Open
Abstract
The Dowd-Beckwith reaction, a ring-expansion of carbonyl compounds via alkoxy radicals, is a powerful approach for synthesizing medium to large-sized carbocyclic scaffolds, which takes advantage of existing ring structures and avoids entropic and enthalpic factors that arise from the end-to-end cyclization strategies. However, the Dowd-Beckwith ring-expansion followed by H-atom abstraction is still the dominating pathway, which hampers its synthetic applications, and there currently exist no reports on the functionalization of ring-expanded radicals using non-carbon based nucleophilic reagents. Herein, we report a redox-neutral decarboxylative Dowd-Beckwith/radical-polar crossover (RPC) sequence that delivers functionalized medium-sized carbocyclic compounds with broad functional group tolerance. The reaction allows one-carbon ring-expansion of 4-, 5-, 6-, 7-, and 8-membered ring substrates and can also be applied to three-carbon chain incorporation, enabling remote functionalization in medium-sized rings.
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Affiliation(s)
- Tushar Singha
- Department of Organic Chemistry, Indian Institute of Science Bangalore 560012 India
| | - Ganesh Arjun Kadam
- Department of Organic Chemistry, Indian Institute of Science Bangalore 560012 India
| | - Durga Prasad Hari
- Department of Organic Chemistry, Indian Institute of Science Bangalore 560012 India
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8
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Zhang W, Chen Z, Jiang YX, Liao LL, Wang W, Ye JH, Yu DG. Arylcarboxylation of unactivated alkenes with CO 2 via visible-light photoredox catalysis. Nat Commun 2023; 14:3529. [PMID: 37316537 DOI: 10.1038/s41467-023-39240-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2023] [Accepted: 05/31/2023] [Indexed: 06/16/2023] Open
Abstract
Photocatalytic carboxylation of alkenes with CO2 is a promising and sustainable strategy to synthesize high value-added carboxylic acids. However, it is challenging and rarely investigated for unactivated alkenes due to their low reactivities. Herein, we report a visible-light photoredox-catalyzed arylcarboxylation of unactivated alkenes with CO2, delivering a variety of tetrahydronaphthalen-1-ylacetic acids, indan-1-ylacetic acids, indolin-3-ylacetic acids, chroman-4-ylacetic acids and thiochroman-4-ylacetic acids in moderate-to-good yields. This reaction features high chemo- and regio-selectivities, mild reaction conditions (1 atm, room temperature), broad substrate scope, good functional group compatibility, easy scalability and facile derivatization of products. Mechanistic studies indicate that in situ generation of carbon dioxide radical anion and following radical addition to unactivated alkenes might be involved in the process.
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Affiliation(s)
- Wei Zhang
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064, China
- West China School of Public Health and West China Fourth Hospital, Sichuan University, Chengdu, 610041, China
| | - Zhen Chen
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064, China
| | - Yuan-Xu Jiang
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064, China
| | - Li-Li Liao
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing, 400030, P. R. China
| | - Wei Wang
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064, China
| | - Jian-Heng Ye
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064, China.
| | - Da-Gang Yu
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064, China.
- State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin, 300071, P. R. China.
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9
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Zhang J, Liu C, Qiao Y, Wei M, Guan W, Mao Z, Qin H, Fang Z, Guo K. Intramolecular trapping of spiro radicals to produce unusual cyclization products from usual migration substrates. Chem Sci 2023; 14:2461-2466. [PMID: 36873849 PMCID: PMC9977401 DOI: 10.1039/d2sc05768a] [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: 10/18/2022] [Accepted: 02/01/2023] [Indexed: 02/05/2023] Open
Abstract
A conceptually new methodology to give unusual cyclization products from usual migration substrates was disclosed. The highly complex and structurally important and valuable spirocyclic compounds were produced through radical addition, intramolecular cyclization and ring opening instead of usual migration to the di-functionalization products of olefins. Furthermore, a plausible mechanism was proposed based on a series of mechanistic studies including radical trapping, radical clock, verification experiments of intermediates, isotope labeling and KIE experiments.
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Affiliation(s)
- Jingming Zhang
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University Nanjing 211816 China
| | - Chengkou Liu
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University Nanjing 211816 China
| | - Yaqi Qiao
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University Nanjing 211816 China
| | - Minghui Wei
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University Nanjing 211816 China
| | - Wenjing Guan
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University Nanjing 211816 China
| | - Ziren Mao
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University Nanjing 211816 China
| | - Hong Qin
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University Nanjing 211816 China
| | - Zheng Fang
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University Nanjing 211816 China
| | - Kai Guo
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University Nanjing 211816 China .,State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University Nanjing 211816 China
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10
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Zhang Z, Wang J, Yu M, Ye S, Wu J. Construction of β-Amino Sulfones from Sodium Metabisulfite via a Radical 1,4-Amino Migration. Org Lett 2023; 25:304-308. [PMID: 36583507 DOI: 10.1021/acs.orglett.2c04291] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
A three-component reaction of alkenyl-tethered oxime ethers, sodium metabisulfite, and aryldiazonium tetrafluoroborates under mild conditions is developed. This reaction proceeds at room temperature without any oxidants or additives, affording β-amino sulfones with good functional group tolerance through aminosulfonylation of unactivated alkene. Mechanistic studies show that this transformation undergoes a radical process, including radical trapping with sulfur dioxide and radical 1,4-amino migration.
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Affiliation(s)
- Ziqi Zhang
- School of Pharmaceutical and Chemical Engineering & Institute for Advanced Studies, Taizhou University, 1139 Shifu Avenue, Taizhou 318000, China
| | - Jianyan Wang
- School of Pharmaceutical and Chemical Engineering & Institute for Advanced Studies, Taizhou University, 1139 Shifu Avenue, Taizhou 318000, China
| | - Mengxia Yu
- School of Pharmaceutical and Chemical Engineering & Institute for Advanced Studies, Taizhou University, 1139 Shifu Avenue, Taizhou 318000, China
| | - Shengqing Ye
- School of Pharmaceutical and Chemical Engineering & Institute for Advanced Studies, Taizhou University, 1139 Shifu Avenue, Taizhou 318000, China
| | - Jie Wu
- School of Pharmaceutical and Chemical Engineering & Institute for Advanced Studies, Taizhou University, 1139 Shifu Avenue, Taizhou 318000, China.,State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China.,School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, China
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11
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Yuan S, Liu X, Huang Z, Gui S, Diao Y, Peng YY, Ding Q. Tetrabutylammonium Chloride-Induced Cascade Radical Addition/Cyclization of O-Isocyanodiaryl Amines: A Novel Protocol for the Synthesis of 11-Trifluoromethylated Dibenzodiazepines. J Org Chem 2022; 87:16542-16549. [PMID: 36454597 DOI: 10.1021/acs.joc.2c02100] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
Abstract
A straightforward protocol for the synthesis of 11-trifluoromethylated dibenzodiazepines has been developed via TBAC-induced trifluoromethylation/cyclization of o-isocyanodiaryl amines using Togni's reagent as the trifluoromethyl source. This is the first report on the one-step construction of CF3-containing dibenzodiazepine drug skeletons. Additionally, a series of 11-trifluoromethylated dibenzodiazepines were afforded in moderate to excellent yields under transition-metal-free conditions.
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Affiliation(s)
- Sitian Yuan
- National Engineering Research Center for Carbohydrate Synthesis, Key Lab of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of Education, Key Laboratory for Green Chemistry of Jiangxi Province, Jiangxi Normal University, Nanchang 330022 Jiangxi, China
| | - Xuan Liu
- National Engineering Research Center for Carbohydrate Synthesis, Key Lab of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of Education, Key Laboratory for Green Chemistry of Jiangxi Province, Jiangxi Normal University, Nanchang 330022 Jiangxi, China
| | - Zhongzhi Huang
- National Engineering Research Center for Carbohydrate Synthesis, Key Lab of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of Education, Key Laboratory for Green Chemistry of Jiangxi Province, Jiangxi Normal University, Nanchang 330022 Jiangxi, China
| | - Shuanggen Gui
- National Engineering Research Center for Carbohydrate Synthesis, Key Lab of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of Education, Key Laboratory for Green Chemistry of Jiangxi Province, Jiangxi Normal University, Nanchang 330022 Jiangxi, China
| | - Yuexing Diao
- National Engineering Research Center for Carbohydrate Synthesis, Key Lab of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of Education, Key Laboratory for Green Chemistry of Jiangxi Province, Jiangxi Normal University, Nanchang 330022 Jiangxi, China
| | - Yi-Yuan Peng
- National Engineering Research Center for Carbohydrate Synthesis, Key Lab of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of Education, Key Laboratory for Green Chemistry of Jiangxi Province, Jiangxi Normal University, Nanchang 330022 Jiangxi, China
| | - Qiuping Ding
- National Engineering Research Center for Carbohydrate Synthesis, Key Lab of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of Education, Key Laboratory for Green Chemistry of Jiangxi Province, Jiangxi Normal University, Nanchang 330022 Jiangxi, China
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12
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Wang Z, Chang C, Chen Y, Wu X, Li J, Zhu C. Remote desaturation of hexenenitriles by radical-mediated cyano migration. Tetrahedron 2022. [DOI: 10.1016/j.tet.2022.133228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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13
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Yuan Q, Huang Z, Chai Z, Hong D, Zhu S, Zhou S, Zhu X, Wei Y, Wang S. Indolyl-based Copper(I) Complex-Catalyzed Intermolecular Trifluoromethylazolation of Alkenes via Radical Process. Org Lett 2022; 24:8948-8953. [DOI: 10.1021/acs.orglett.2c03370] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
Affiliation(s)
- Qingbing Yuan
- Key Laboratory of Functionalized Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241000, China
| | - Zeming Huang
- Anhui Laboratory of Functional Complexes for Materials Chemistry and Application, College of Chemical and Environmental Engineering, Anhui Polytechnic University, Wuhu, Anhui 241000, China
| | - Zhuo Chai
- Key Laboratory of Functionalized Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241000, China
| | - Dongjing Hong
- Key Laboratory of Functionalized Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241000, China
| | - Shan Zhu
- Key Laboratory of Functionalized Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241000, China
| | - Shuangliu Zhou
- Key Laboratory of Functionalized Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241000, China
| | - Xiancui Zhu
- Key Laboratory of Functionalized Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241000, China
| | - Yun Wei
- Key Laboratory of Functionalized Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241000, China
| | - Shaowu Wang
- Key Laboratory of Functionalized Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241000, China
- Anhui Laboratory of Functional Complexes for Materials Chemistry and Application, College of Chemical and Environmental Engineering, Anhui Polytechnic University, Wuhu, Anhui 241000, China
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
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14
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Gu XT, Li LH, Wei Y, Shi M. Selective C(sp 2)-H bond functionalization of olefins via visible-light-induced photoredox-quinuclidine dual catalysis. Chem Commun (Camb) 2022; 58:9954-9957. [PMID: 35983765 DOI: 10.1039/d2cc03694k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
The site selective C(sp2)-H bond functionalization of olefins has been achieved through a visible-light-induced photoredox-quinuclidine dual catalysis upon merging the quinuclidinium radical cation addition to alkene strategy and the distal heteroaryl ipso-migration strategy. This synthetic protocol features a simple operation with readily available starting materials in good step-economy to access alkenylheteroaromatic products in moderate to good yields under mild conditions. A plausible cascade catalytic reaction mechanism is also proposed.
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Affiliation(s)
- Xin-Tao Gu
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Ling-Ling Lu, Shanghai, 200032, China.
| | - Long-Hai Li
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Ling-Ling Lu, Shanghai, 200032, China.
| | - Yin Wei
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Ling-Ling Lu, Shanghai, 200032, China.
| | - Min Shi
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Ling-Ling Lu, Shanghai, 200032, China.
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15
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Singha T, Rouf Samim Mondal A, Midya S, Prasad Hari D. The Dowd–Beckwith Reaction: History, Strategies, and Synthetic Potential. Chemistry 2022; 28:e202202025. [DOI: 10.1002/chem.202202025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Indexed: 11/08/2022]
Affiliation(s)
- Tushar Singha
- Department of Organic Chemistry Indian Institute of Scienece Bangalore 560012 India
| | | | - Suparnak Midya
- Department of Organic Chemistry Indian Institute of Scienece Bangalore 560012 India
| | - Durga Prasad Hari
- Department of Organic Chemistry Indian Institute of Scienece Bangalore 560012 India
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16
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Xie D, Chen H, Wei D, Wei B, Li Z, Zhang J, Yu W, Han B. Regioselective Fluoroalkylphosphorylation of Unactivated Alkenes by Radical‐Mediated Alkoxyphosphine Rearrangement**. Angew Chem Int Ed Engl 2022; 61:e202203398. [DOI: 10.1002/anie.202203398] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Indexed: 11/11/2022]
Affiliation(s)
- Dong‐Tai Xie
- State Key Laboratory of Applied Organic Chemistry (SKLAOC) College of Chemistry and Chemical Engineering Lanzhou University Lanzhou 730000 China
| | - Hong‐Lei Chen
- State Key Laboratory of Applied Organic Chemistry (SKLAOC) College of Chemistry and Chemical Engineering Lanzhou University Lanzhou 730000 China
| | - Dian Wei
- State Key Laboratory of Applied Organic Chemistry (SKLAOC) College of Chemistry and Chemical Engineering Lanzhou University Lanzhou 730000 China
| | - Bang‐Yi Wei
- State Key Laboratory of Applied Organic Chemistry (SKLAOC) College of Chemistry and Chemical Engineering Lanzhou University Lanzhou 730000 China
| | - Zheng‐Hu Li
- State Key Laboratory of Applied Organic Chemistry (SKLAOC) College of Chemistry and Chemical Engineering Lanzhou University Lanzhou 730000 China
| | - Jian‐Wu Zhang
- State Key Laboratory of Applied Organic Chemistry (SKLAOC) College of Chemistry and Chemical Engineering Lanzhou University Lanzhou 730000 China
| | - Wei Yu
- State Key Laboratory of Applied Organic Chemistry (SKLAOC) College of Chemistry and Chemical Engineering Lanzhou University Lanzhou 730000 China
| | - Bing Han
- State Key Laboratory of Applied Organic Chemistry (SKLAOC) College of Chemistry and Chemical Engineering Lanzhou University Lanzhou 730000 China
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17
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Seastram AC, Hareram MD, Knight TMB, Morrill LC. Electrochemical alkene azidocyanation via 1,4-nitrile migration. Chem Commun (Camb) 2022; 58:8658-8661. [PMID: 35822449 DOI: 10.1039/d2cc02958h] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An electrochemical method for the azidocyanation of alkenes via 1,4-nitrile migration has been developed. This organic oxidant free method is applicable across various alkene containing cyanohydrins, and provides access to a broad range of synthetically useful 1,2-azidonitriles (28 examples). This methodology was extended to an electrochemical alkene sulfonylcyanation procedure, as well as to access a trifunctionalized hexanenitrile from a malononitrile starting material. The orthogonal derivatization of the products was also demonstrated through chemoselective transformations.
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Affiliation(s)
- Alex C Seastram
- Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff, CF10 3AT, UK.
| | - Mishra Deepak Hareram
- Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff, CF10 3AT, UK.
| | - Thomas M B Knight
- Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff, CF10 3AT, UK.
| | - Louis C Morrill
- Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff, CF10 3AT, UK.
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18
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Unsworth WP, Stephens TC. Strategies for the Synthesis of Heterocyclic Macrocycles and Medium‐Sized Rings. HETEROCYCLES 2022. [DOI: 10.1002/9783527832002.ch3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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19
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Xie DT, Chen HL, Wei D, Wei BY, Li ZH, Zhang JW, Yu W, Han B. Regioselective Fluoroalkylphosphorylation of Unactivated Alkenes by Radical–Mediated Alkoxyphosphine Rearrangement. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202203398] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Dong-Tai Xie
- Lanzhou University College of Chemistry and Chemical Engineering CHINA
| | - Hong-Lei Chen
- Lanzhou University College of Chemistry and Chemical Engineering CHINA
| | - Dian Wei
- Lanzhou University College of Chemistry and Chemical Engineering CHINA
| | - Bang-Yi Wei
- Lanzhou University College of Chemistry and Chemical Engineering CHINA
| | - Zheng-Hu Li
- Lanzhou University College of Chemistry and Chemical Engineering CHINA
| | - Jian-Wu Zhang
- Lanzhou University College of Chemistry and Chemical Engineering CHINA
| | - Wei Yu
- Lanzhou University College of Chemistry and Chemical Engineering CHINA
| | - Bing Han
- Lanzhou University Department of Chemistry 222 South Tianshui Rd. 730000 Lanzhou CHINA
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20
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Wang L, Zhang Y, Zhu T, Wu J. Difluoromethylarylation of Alkynes from [Bis(difluoroacetoxy)iodo]benzene: Access to CF 2H-Containing Dibenzazepines. J Org Chem 2022; 87:7551-7556. [PMID: 35549257 DOI: 10.1021/acs.joc.2c00584] [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
A photoinduced radical difluoromethylarylation via tandem addition-cyclization of alkynes with easily available [bis(difluoroacetoxy)iodo]benzene is accomplished, providing a straightforward and practical route for the construction of difluoromethylated dibenzazepines. Various sensitive functional groups can be compatible under photoinduced conditions. Mechanism investigation reveals that this transformation is initiated by the addition of alkyne with difluoromethyl radical, generated in situ from [bis(difluoroacetoxy)iodo]benzene.
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Affiliation(s)
- Luoyu Wang
- School of Pharmaceutical and Materials Engineering & Institute for Advanced Studies, Taizhou University, 1139 Shifu Avenue, Taizhou 318000, China
| | - Yan Zhang
- School of Pharmaceutical and Materials Engineering & Institute for Advanced Studies, Taizhou University, 1139 Shifu Avenue, Taizhou 318000, China
| | - Tonghao Zhu
- School of Pharmaceutical and Materials Engineering & Institute for Advanced Studies, Taizhou University, 1139 Shifu Avenue, Taizhou 318000, China
| | - Jie Wu
- School of Pharmaceutical and Materials Engineering & Institute for Advanced Studies, Taizhou University, 1139 Shifu Avenue, Taizhou 318000, China.,State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China.,School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, China
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21
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Liu Y, He Y, Liu Y, Wei K, Guo W. Kinetically Controllable Construction of Nine-Membered Carbocycles via Pd-Catalyzed Decarboxylative Cycloaddition. Org Lett 2022; 24:2567-2572. [PMID: 35343709 DOI: 10.1021/acs.orglett.2c00808] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
A kinetically controllable strategy toward the construction of otherwise challenging nine-membered carbocycles is reported. This Pd-catalyzed decarboxylative procedure utilizes vinyl methylene cyclic carbonates as the C5-dipole and allylidenemalononitriles as C4-building blocks. The protocol features user-friendly operations with controllable regioselectivity and generates CO2 as the sole byproduct. The formation of synthetically valuable and thermodynamically favored seven-membered carbocycles was also investigated.
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Affiliation(s)
- Yin Liu
- Frontier Institute of Science and Technology (FIST), Xi'an Jiaotong University, Xi'an 710045, China.,School of Biology and Biological Engineering, South China University of Technology, Guangzhou 510006, China
| | - Yicheng He
- Frontier Institute of Science and Technology (FIST), Xi'an Jiaotong University, Xi'an 710045, China
| | - Yang Liu
- Frontier Institute of Science and Technology (FIST), Xi'an Jiaotong University, Xi'an 710045, China
| | - Kun Wei
- School of Biology and Biological Engineering, South China University of Technology, Guangzhou 510006, China
| | - Wusheng Guo
- Frontier Institute of Science and Technology (FIST), Xi'an Jiaotong University, Xi'an 710045, China
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22
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Guo K, Gu C, Li Y, Xie X, Zhang H, Chen K, Zhu Y. Photoredox Catalyzed Trifluoromethyl Radical‐Triggered Trifunctionalization of 5‐Hexenenitriles
via
Cyano Migration. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202101519] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Kang Guo
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry, College of Sciences Nanjing Agricultural University Nanjing 210095 People's Republic of China
| | - Chen Gu
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry, College of Sciences Nanjing Agricultural University Nanjing 210095 People's Republic of China
| | - Yun Li
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry, College of Sciences Nanjing Agricultural University Nanjing 210095 People's Republic of China
| | - Xiaofei Xie
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry, College of Sciences Nanjing Agricultural University Nanjing 210095 People's Republic of China
| | - Honglin Zhang
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry, College of Sciences Nanjing Agricultural University Nanjing 210095 People's Republic of China
| | - Kang Chen
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry, College of Sciences Nanjing Agricultural University Nanjing 210095 People's Republic of China
| | - Yingguang Zhu
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry, College of Sciences Nanjing Agricultural University Nanjing 210095 People's Republic of China
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23
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Han WJ, Zhang JW, Yan CX, Wang JW, Zhou PP, Han B. Sequential Catalytic Annulations: Divergent Synthesis of Heterocycles through a Radical [1,4]-Oxygen Shift. Org Lett 2022; 24:542-547. [PMID: 34989585 DOI: 10.1021/acs.orglett.1c03883] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A radical [1,4]-oxygen-atom transfer has been realized by the reaction of linear alkyne-tethered ketoximes and ethynylbenziodoxolones (EBX) under sequential catalytic conditions. Mechanism studies indicate that the O atom transfer experiences a cascade O atom radical cyclization/alkynylation/N-O bond photocleavage and subsequent N,O-diradical rearrangement. By the diversification of catalytic sequences, a series of structurally important 3H-pyrrol-3-ones and chlorinated furo[3,2-b]pyrroles are divergently synthesized along with an O atom shift under the catalysis of Cu/Ir photosensitization and Cu/Ir photosensitization/AlCl3, respectively.
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Affiliation(s)
- Wen-Jun Han
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Jian-Wu Zhang
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Chao-Xian Yan
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Jia-Wei Wang
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Pan-Pan Zhou
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Bing Han
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, People's Republic of China
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24
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Liu Z, Li C, Chen J, Li X, Luo F, Cheng F, Liu JJ. Photoactive perylenediimide metal–organic framework for boosting iodoperfluoroalkylation of alkenes and oxidative coupling of amines. Inorg Chem Front 2022. [DOI: 10.1039/d1qi01206a] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
A novel photoactive MOF was prepared based on an electron-deficient perylenediimide derivative, which exhibits excellent photocatalytic activities towards the iodoperfluoroalkylation of alkenes and the oxidation of amines to imines.
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Affiliation(s)
- Zhengfen Liu
- College of Chemistry and Environmental Science, Qujing Normal University, Qujing 655011, China
| | - Chao Li
- College of Chemistry and Environmental Science, Qujing Normal University, Qujing 655011, China
| | - Jian Chen
- College of Chemistry and Environmental Science, Qujing Normal University, Qujing 655011, China
| | - Xiaobo Li
- College of Chemistry and Environmental Science, Qujing Normal University, Qujing 655011, China
| | - Fumang Luo
- College of Chemistry and Environmental Science, Qujing Normal University, Qujing 655011, China
| | - Feixiang Cheng
- College of Chemistry and Environmental Science, Qujing Normal University, Qujing 655011, China
| | - Jian-Jun Liu
- College of Chemistry and Environmental Science, Qujing Normal University, Qujing 655011, China
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25
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Palate KY, Yang Z, Whitwood AC, Unsworth WP. Synthesis of medium-ring lactams and macrocyclic peptide mimetics via conjugate addition/ring expansion cascade reactions. RSC Chem Biol 2022; 3:334-340. [PMID: 35359493 PMCID: PMC8905531 DOI: 10.1039/d1cb00245g] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Accepted: 02/08/2022] [Indexed: 11/30/2022] Open
Abstract
A novel conjugate addition/ring expansion (CARE) cascade reaction sequence is reported that enables medium-sized ring and macrocyclic bis-lactams to be prepared from primary amines and cyclic imides. The reactions are simple to perform, generally high yielding, and very broad in scope, especially with respect to the primary amine component. CARE reactions can also be performed iteratively, enabling β-peptoid-based macrocyclic peptide mimetics to be ‘grown’ via well controlled, sequential 4-atom ring expansion reactions, with the incorporation of varied functionalised amines during each iteration. A conjugate addition/ring expansion (CARE) cascade reaction sequence is reported that enables medium-sized ring and macrocyclic bis-lactams to be prepared from primary amines and cyclic imides.![]()
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Affiliation(s)
- Kleopas Y Palate
- Department of Chemistry, University of York, Heslington York YO10 5DD UK
| | - Zhongzhen Yang
- Department of Chemistry, University of York, Heslington York YO10 5DD UK
| | - Adrian C Whitwood
- Department of Chemistry, University of York, Heslington York YO10 5DD UK
| | - William P Unsworth
- Department of Chemistry, University of York, Heslington York YO10 5DD UK
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26
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Zhu B, Li Z, Chen F, Xiong W, Tan X, Lei M, Wu W, Jiang H. Palladium-catalyzed oxidative Heck reaction of non-activated alkenes directed by fluorinated alcohol. Chem Commun (Camb) 2022; 58:12688-12691. [DOI: 10.1039/d2cc04921j] [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 new reactivity pattern for the regio- and stereoselective oxidative arylation of non-activated alkenes by introducing a trifluoromethyl group in the substrate enol has been established.
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Affiliation(s)
- Baiyao Zhu
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Zhewei Li
- State Key Laboratory of Chemical Resource Engineering, Institute of Computational Chemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, China
| | - Fulin Chen
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Wenfang Xiong
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Xiaobin Tan
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Ming Lei
- State Key Laboratory of Chemical Resource Engineering, Institute of Computational Chemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, 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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27
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Chang C, Zhang H, Wu X, Zhu C. Radical trifunctionalization of hexenenitrile via remote cyano migration. Chem Commun (Camb) 2021; 58:1005-1008. [PMID: 34940775 DOI: 10.1039/d1cc06687k] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel radical-mediated trifunctionalization of hexenenitriles via the strategy of remote functional group migration is disclosed. A portfolio of functionalized hexenenitriles are employed as substrates. After difunctionalization of the unactivated alkenyl part via remote cyano migration, the in situ formed radical intermediate is captured by an azido radical, thus enabling the trifunctionalization. The reaction features mild conditions and broad functional group compatibility, leading to valuable products bearing multiple useful groups. This protocol further extends the scope of remote functional group migration.
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Affiliation(s)
- Chenyang Chang
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, 199 Ren-Ai Road, Suzhou, Jiangsu 215123, China.
| | - Huihui Zhang
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, 199 Ren-Ai Road, Suzhou, Jiangsu 215123, China.
| | - Xinxin Wu
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, 199 Ren-Ai Road, Suzhou, Jiangsu 215123, China.
| | - Chen Zhu
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, 199 Ren-Ai Road, Suzhou, Jiangsu 215123, China. .,Key Laboratory of Synthetic Chemistry of Natural Substances, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
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28
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Zhang XG, Li X, Zhang C, Feng C. Multisubstituted Cyclohexene Construction through Telescoped Radical-Addition Induced Remote Functional Group Migration and Horner-Wadsworth-Emmons (HWE) Olefination. Org Lett 2021; 23:9611-9615. [PMID: 34870438 DOI: 10.1021/acs.orglett.1c03821] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An efficient telescoped method for the rapid assembly of multisubstituted cyclohexenes is presented herein. The whole process nicely merges photoredox-promoted alkene difunctionalization via remote functional group migration with concomitant intramolecular Horner-Wadsworth-Emmons (HWE) olefination. The characteristic feature of this protocol resides in the fact that the follow-up requiring ketone functionality for ring-closing olefination is in situ unveiled from the otherwise inert tertiary alcohol by the preceding alkene difunctionalization.
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Affiliation(s)
- Xing-Gui Zhang
- Technical Institute of Fluorochemistry (TIF), Institute of Advanced Synthesis (IAS), School of Chemistry and Molecular Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing, 211816, China
| | - Xin Li
- Technical Institute of Fluorochemistry (TIF), Institute of Advanced Synthesis (IAS), School of Chemistry and Molecular Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing, 211816, China
| | - Chi Zhang
- Technical Institute of Fluorochemistry (TIF), Institute of Advanced Synthesis (IAS), School of Chemistry and Molecular Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing, 211816, China
| | - Chao Feng
- Technical Institute of Fluorochemistry (TIF), Institute of Advanced Synthesis (IAS), School of Chemistry and Molecular Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing, 211816, China
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29
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Wei D, Liu T, He Y, Wei B, Pan J, Zhang J, Jiao N, Han B. Radical 1,4/5-Amino Shift Enables Access to Fluoroalkyl-Containing Primary β(γ)-Aminoketones under Metal-Free Conditions. Angew Chem Int Ed Engl 2021; 60:26308-26313. [PMID: 34437754 DOI: 10.1002/anie.202110583] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Indexed: 12/21/2022]
Abstract
A novel radical 1,4/5-amino shift from the oxygen center of alkene-tethered diphenyl ketoxime ethers to the carbon center to achieve high value-added fluoroalkyl-containing primary β(γ)-amino-ketones is reported. Mechanism studies reveal that the migration is triggered by the alkene addition of fluoroalkyl radical derived from the electron donor-acceptor (EDA) complex of Togni's reagent II or fluoroalkyl iodides and quinuclidine, and involves a unique 5(6)-exo-trig cyclization of the carbon-centered radical onto the N-atom of ketoxime ethers followed by a cascade sequence of N-O bond cleavage and dehydrogenation. Notably, besides Togni's reagent II and fluoroalkyl iodides, this protocol is also compatible with other radical precursors to provide various functionalized primary aminoketones.
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Affiliation(s)
- Dian Wei
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, China
| | - Tuming Liu
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, China
| | - Yiheng He
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, China
| | - Bangyi Wei
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, China
| | - Jiahao Pan
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, China
| | - Jianwu Zhang
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, China
| | - Ning Jiao
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, 100191, China
| | - Bing Han
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, China
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30
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Wei D, Liu T, He Y, Wei B, Pan J, Zhang J, Jiao N, Han B. Radical 1,4/5‐Amino Shift Enables Access to Fluoroalkyl‐Containing Primary β(γ)‐Aminoketones under Metal‐Free Conditions. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202110583] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Dian Wei
- State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical Engineering Lanzhou University Lanzhou 730000 China
| | - Tuming Liu
- State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical Engineering Lanzhou University Lanzhou 730000 China
| | - Yiheng He
- State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical Engineering Lanzhou University Lanzhou 730000 China
| | - Bangyi Wei
- State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical Engineering Lanzhou University Lanzhou 730000 China
| | - Jiahao Pan
- State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical Engineering Lanzhou University Lanzhou 730000 China
| | - Jianwu Zhang
- State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical Engineering Lanzhou University Lanzhou 730000 China
| | - Ning Jiao
- State Key Laboratory of Natural and Biomimetic Drugs School of Pharmaceutical Sciences Peking University Beijing 100191 China
| | - Bing Han
- State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical Engineering Lanzhou University Lanzhou 730000 China
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31
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Qin X, Zou N, Cheng X, Liang C, Mo D. Synthesis of Chiral Nine‐Membered N‐Heterocycles through Silver(I)‐Promoted Cycloaddition and Rearrangement from
N
‐Vinyl‐α,β‐Unsaturated Nitrones with Chiral 3‐Propioloyloxazolidin‐2‐Ones. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202101199] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Xiao‐Ting Qin
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources Collaborative Innovation Center for Guangxi Ethnic Medicine School of Chemistry and Pharmaceutical Sciences Guangxi Normal University 15 Yu Cai Road Guilin 541004, People's Republic of China
| | - Ning Zou
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources Collaborative Innovation Center for Guangxi Ethnic Medicine School of Chemistry and Pharmaceutical Sciences Guangxi Normal University 15 Yu Cai Road Guilin 541004, People's Republic of China
| | - Xiao‐Ling Cheng
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources Collaborative Innovation Center for Guangxi Ethnic Medicine School of Chemistry and Pharmaceutical Sciences Guangxi Normal University 15 Yu Cai Road Guilin 541004, People's Republic of China
| | - Cui Liang
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources Collaborative Innovation Center for Guangxi Ethnic Medicine School of Chemistry and Pharmaceutical Sciences Guangxi Normal University 15 Yu Cai Road Guilin 541004, People's Republic of China
| | - Dong‐Liang Mo
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources Collaborative Innovation Center for Guangxi Ethnic Medicine School of Chemistry and Pharmaceutical Sciences Guangxi Normal University 15 Yu Cai Road Guilin 541004, People's Republic of China
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32
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Luo YY, Deng W, Xiang J, Qin YQ, Chen D, Liu L, Zhang JJ, Peng XJ. Methylation Alkynylation of Terminal Alkenes via 1,2-Alkynyl Migration Using Dicumyl Peroxide as the Methyl Source. SYNTHESIS-STUTTGART 2021. [DOI: 10.1055/a-1528-8357] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
AbstractThe metal-free oxidative alkene methylation/alkynylation of 1,4-enyn-3-ols with an organic peroxide as the methyl source has been developed, which provides straightforward and practical access to the challenging quaternary-carbon-containing but-3-yn-1-ones. The method is reasoned to go through methylation of functional alkenes utilizing dicumyl peroxide as the methylating reagent and subsequent intermolecular cyclization/1,2-alkynyl migration. This reaction has an excellent functional group tolerance, broad substrate scope, and exquisite selectivity.
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Affiliation(s)
- Yong-yue Luo
- Agricultural Product Processing Research Institute, Chinese Academy of Tropical Agricultural Sciences
| | - Wei Deng
- Advanced Catalytic Engineer Research Center of Education, College of Chemistry and Chemical Engineering, Hunan University
| | - Jiannan Xiang
- Advanced Catalytic Engineer Research Center of Education, College of Chemistry and Chemical Engineering, Hunan University
| | - Yi-qun Qin
- Advanced Catalytic Engineer Research Center of Education, College of Chemistry and Chemical Engineering, Hunan University
| | - De Chen
- Advanced Catalytic Engineer Research Center of Education, College of Chemistry and Chemical Engineering, Hunan University
| | - Liang Liu
- Advanced Catalytic Engineer Research Center of Education, College of Chemistry and Chemical Engineering, Hunan University
| | - Jia-jia Zhang
- Advanced Catalytic Engineer Research Center of Education, College of Chemistry and Chemical Engineering, Hunan University
| | - Xin-ju Peng
- Advanced Catalytic Engineer Research Center of Education, College of Chemistry and Chemical Engineering, Hunan University
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33
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Wang L, Zhang H, Zhu C, Feng C. Expedient Trifluoromethylacylation of Styrenes Enabled by Photoredox Catalysis. CHINESE J CHEM 2021. [DOI: 10.1002/cjoc.202100599] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Lu Wang
- Technical Institute of Fluorochemistry (TIF), Institute of Advanced Synthesis (IAS), School of Chemistry and Molecular Engineering, Nanjing Tech University 30 South Puzhu Road Nanjing Jiangsu 211816 China
| | - Heng Zhang
- Technical Institute of Fluorochemistry (TIF), Institute of Advanced Synthesis (IAS), School of Chemistry and Molecular Engineering, Nanjing Tech University 30 South Puzhu Road Nanjing Jiangsu 211816 China
| | - Chuan Zhu
- Technical Institute of Fluorochemistry (TIF), Institute of Advanced Synthesis (IAS), School of Chemistry and Molecular Engineering, Nanjing Tech University 30 South Puzhu Road Nanjing Jiangsu 211816 China
| | - Chao Feng
- Technical Institute of Fluorochemistry (TIF), Institute of Advanced Synthesis (IAS), School of Chemistry and Molecular Engineering, Nanjing Tech University 30 South Puzhu Road Nanjing Jiangsu 211816 China
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34
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Liu XY, Tian SY, Jiang YF, Rao W, Wang SY. Visible-Light-Triggered Sulfonylation/Aryl Migration/Desulfonylation and C-S/Se Bond Formation Reaction: 1,2,4-Trifunctionalization of Butenyl Benzothiazole Sulfone with Thiosulfonate/Selenosulfonates. Org Lett 2021; 23:8246-8251. [PMID: 34652929 DOI: 10.1021/acs.orglett.1c02981] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
A visible-light-triggered radical cascade sulfonylation/aryl migration/desulfonylation and C-S/Se bond formation reaction of butenyl benzothiazole sulfone with thiosulfonates or selenosulfonates is developed. This study affords the 1,2,4-trifunctionalization of butenyl benzothiazole sulfone derivatives under mild conditions.
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Affiliation(s)
- Xin-Yu Liu
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, China
| | - Shi-Yin Tian
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, China
| | - Yi-Fan Jiang
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, China
| | - Weidong Rao
- Key Laboratory of Biomass-based Green Fuels and Chemicals, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Shun-Yi Wang
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, China
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35
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Yang M, Chang X, Ye S, Ding Q, Wu J. Generation of Heteroaryl-Substituted Sulfonyl Compounds from Sulfur Dioxide via Remote Heteroaryl ipso-Migration. J Org Chem 2021; 86:15177-15184. [PMID: 34636243 DOI: 10.1021/acs.joc.1c01778] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The generation of heteroaryl-substituted sulfonyl compounds via a catalyst-, base-, and additive-free three-component reaction of heteroaryl-substituted tertiary alcohols, aryldiazonium tetrafluoroborates, and DABCO·(SO2)2 under mild conditions is developed. Various functional groups are tolerated well in this transformation, and a broad substrate scope is demonstrated. A preliminary mechanistic investigation shows that this reaction undergoes a radical process, including the insertion of sulfur dioxide, sulfonyl radical addition to unactivated alkene, and remote heteroaryl ipso-migration.
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Affiliation(s)
- Man Yang
- Key Laboratory for Green Chemistry of Jiangxi Province, Key Laboratory of Functional Small Molecules for Ministry of Education, Jiangxi Normal University, 99 Ziyang Avenue, Nanchang 330022, China
| | - Xiaotong Chang
- SchooSchool of Pharmaceutical and Materials Engineering & Institute for Advanced Studies, Taizhou University, 1139 Shifu Avenue, Taizhou 318000, China
| | - Shengqing Ye
- SchooSchool of Pharmaceutical and Materials Engineering & Institute for Advanced Studies, Taizhou University, 1139 Shifu Avenue, Taizhou 318000, China
| | - Qiuping Ding
- Key Laboratory for Green Chemistry of Jiangxi Province, Key Laboratory of Functional Small Molecules for Ministry of Education, Jiangxi Normal University, 99 Ziyang Avenue, Nanchang 330022, China
| | - Jie Wu
- SchooSchool of Pharmaceutical and Materials Engineering & Institute for Advanced Studies, Taizhou University, 1139 Shifu Avenue, Taizhou 318000, China.,State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China.,School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, China
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36
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Wu X, Ma Z, Feng T, Zhu C. Radical-mediated rearrangements: past, present, and future. Chem Soc Rev 2021; 50:11577-11613. [PMID: 34661216 DOI: 10.1039/d1cs00529d] [Citation(s) in RCA: 72] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Rearrangement reactions, one of the most significant transformations in organic chemistry, play an irreplaceable role in improving synthetic efficiency and molecular complexity. Concomitant cleavage and reconstruction of chemical bonds can display the great artistry and the glamour of synthetic chemistry. Over the past century, ionic rearrangement reactions, in particular those involving cationic pathways, have represented most of the research. Alongside the renaissance of radical chemistry, radical-mediated rearrangements have recently seen a rapid increase of attention from the chemical community. Many new radical rearrangements that extensively reveal the migratory behaviour of functional groups have been unveiled in the last decade. This Review provides a comprehensive perspective on the area from the past to present achievements, and brings up the prospects that may inspire colleagues to develop more useful synthetic tools based on radical rearrangements.
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Affiliation(s)
- Xinxin Wu
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, 199 Ren-Ai Road, Suzhou, Jiangsu 215123, China.
| | - Zhigang Ma
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, 199 Ren-Ai Road, Suzhou, Jiangsu 215123, China.
| | - Tingting Feng
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, 199 Ren-Ai Road, Suzhou, Jiangsu 215123, China.
| | - Chen Zhu
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, 199 Ren-Ai Road, Suzhou, Jiangsu 215123, China. .,Key Laboratory of Synthetic Chemistry of Natural Substances, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
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37
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Zhu H, Zheng H, Zhang J, Feng J, Kong L, Zhang F, Xue XS, Zhu G. Solvent-controlled photocatalytic divergent cyclization of alkynyl aldehydes: access to cyclopentenones and dihydropyranols. Chem Sci 2021; 12:11420-11426. [PMID: 34567496 PMCID: PMC8409468 DOI: 10.1039/d1sc03416b] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Accepted: 07/26/2021] [Indexed: 01/20/2023] Open
Abstract
Divergent synthesis is a powerful strategy for the fast assembly of different molecular scaffolds from identical starting materials. We describe here a solvent-controlled photocatalytic divergent cyclization of alkynyl aldehydes with sulfonyl chlorides for the direct construction of highly functionalized cyclopentenones and dihydropyranols that widely exist in bioactive molecules and natural products. Density functional theory calculations suggest that a unique N,N-dimethylacetamide-assisted 1,2-hydrogen transfer of alkoxy radicals is responsible for the cyclopentenone formation, whereas a C–C cleavage accounts for the selective production of dihydropyranols in acetonitrile and water at 50 °C. Given the simple and mild reaction conditions, excellent functional group compatibility, forming up to four chemical bonds, and tunable selectivity, it may find wide applications in synthetic chemistry. A solvent-controlled photocatalytic divergent cyclization of alkynyl aldehydes is developed, providing a facile access to sulfonylated cyclopentenones and dihydropyranols under mild conditions.![]()
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Affiliation(s)
- Haiqian Zhu
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University 688 Yingbin Road Jinhua 321004 P. R. China
| | - Hanliang Zheng
- State Key Laboratory of Elemento-organic Chemistry, College of Chemistry, Nankai University Tianjin 300071 P. R. China
| | - Junhua Zhang
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University 688 Yingbin Road Jinhua 321004 P. R. China
| | - Jian Feng
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University 688 Yingbin Road Jinhua 321004 P. R. China
| | - Lichun Kong
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University 688 Yingbin Road Jinhua 321004 P. R. China
| | - Fang Zhang
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University 688 Yingbin Road Jinhua 321004 P. R. China
| | - Xiao-Song Xue
- State Key Laboratory of Elemento-organic Chemistry, College of Chemistry, Nankai University Tianjin 300071 P. R. China
| | - Gangguo Zhu
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University 688 Yingbin Road Jinhua 321004 P. R. China
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38
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Su J, Hu X, Huang H, Guo Y, Song Q. Difluorocarbene enables to access 2-fluoroindoles from ortho-vinylanilines. Nat Commun 2021; 12:4986. [PMID: 34404806 PMCID: PMC8371155 DOI: 10.1038/s41467-021-25313-z] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Accepted: 07/22/2021] [Indexed: 02/07/2023] Open
Abstract
2-Fluoroindoles as an important structural scaffold are widely existing in many bioactive or therapeutic agents. Despite their potential usefulness, efficient constructions of 2-fluoroindole derivatives are very sparce. The development of straightforward synthetic approaches to access 2-fluoroindoles is highly desirable for studying their fundamental properties and applications. Herein, we report an efficient and general strategy for the construction of 2-fluoroindoles in which a wide variety of 2-fluoroindoles were accessed with high efficiency and chemoselectivity. Instead of starting from indole skeletons, our strategy constructs indole scaffolds alongside the incorporation of fluorine atom on C2 position in a formal [4+1] cyclization from readily accessible ortho-vinylanilines and difluorocarbene. In our protocol, commercially accessible halodifluoroalkylative reagents provide one carbon and one fluorine atom by cleaving one C-N tertiary bond and forming one C-N bond and one C-C double bond with ortho-vinylanilines. Downstream transformations on 2-fluoroindoles lead to various valuable bioactive molecules which demonstrated significant synthetic advantages over previous reports. And mechanistic studies suggest that the reaction undergoes a cascade difluorocarbene-trapping and intramolecular Michael addition reaction followed by Csp3-F bond cleavage.
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Affiliation(s)
- Jianke Su
- grid.411404.40000 0000 8895 903XInstitute of Next Generation Matter Transformation, College of Material Sciences Engineering, Huaqiao University, Xiamen, Fujian China
| | - Xinyuan Hu
- grid.411404.40000 0000 8895 903XInstitute of Next Generation Matter Transformation, College of Material Sciences Engineering, Huaqiao University, Xiamen, Fujian China
| | - Hua Huang
- grid.411404.40000 0000 8895 903XInstitute of Next Generation Matter Transformation, College of Material Sciences Engineering, Huaqiao University, Xiamen, Fujian China
| | - Yu Guo
- grid.411404.40000 0000 8895 903XInstitute of Next Generation Matter Transformation, College of Material Sciences Engineering, Huaqiao University, Xiamen, Fujian China
| | - Qiuling Song
- grid.411404.40000 0000 8895 903XInstitute of Next Generation Matter Transformation, College of Material Sciences Engineering, Huaqiao University, Xiamen, Fujian China ,grid.411604.60000 0001 0130 6528Key Laboratory of Molecule Synthesis and Function Discovery, Fujian Province University, College of Chemistry at Fuzhou University, Fuzhou, Fujian China
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39
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Zhang Y, Ma C, Struwe J, Feng J, Zhu G, Ackermann L. Electrooxidative dearomatization of biaryls: synthesis of tri- and difluoromethylated spiro[5.5]trienones. Chem Sci 2021; 12:10092-10096. [PMID: 34377402 PMCID: PMC8317667 DOI: 10.1039/d1sc02682h] [Citation(s) in RCA: 49] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2021] [Accepted: 06/24/2021] [Indexed: 11/23/2022] Open
Abstract
Radical spirocyclization via dearomatization has emerged as an attractive strategy for the rapid synthesis of structurally diverse spiro molecules. We report the use of electrochemistry to perform an oxidative dearomatization of biaryls leading to tri- and difluoromethylated spiro[5.5]trienones in a user friendly undivided cell set-up and a constant current mode. The catalyst- and chemical oxidant-free dearomatization procedure features ample scope, and employs electricity as the green and sole oxidant.
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Affiliation(s)
- Yan Zhang
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University China
| | - Chanchan Ma
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University China
| | - Julia Struwe
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen Germany
| | - Jian Feng
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University China
| | - Gangguo Zhu
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University China
| | - Lutz Ackermann
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen Germany
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40
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Le Du E, Duhail T, Wodrich MD, Scopelliti R, Fadaei‐Tirani F, Anselmi E, Magnier E, Waser J. Structure and Reactivity of N-Heterocyclic Alkynyl Hypervalent Iodine Reagents. Chemistry 2021; 27:10979-10986. [PMID: 33978974 PMCID: PMC8361724 DOI: 10.1002/chem.202101475] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2021] [Indexed: 12/23/2022]
Abstract
Ethynylbenziodoxol(on)e (EBX) cyclic hypervalent iodine reagents have become popular reagents for the alkynylation of radicals and nucleophiles, but only offer limited possibilities for further structure and reactivity fine-tuning. Herein, the synthesis of new N-heterocyclic hypervalent iodine reagents with increased structural flexibility based on amide, amidine and sulfoximine scaffolds is reported. Solid-state structures of the reagents are reported and the analysis of the I-Calkyne bond lengths allowed assessing the trans-effect of the different substituents. Molecular electrostatic potential (MEP) maps of the reagents, derived from DFT computations, revealed less pronounced σ-hole regions for sulfonamide-based compounds. Most reagents reacted well in the alkynylation of β-ketoesters. The alkynylation of thiols afforded more variable yields, with compounds with a stronger σ-hole reacting better. In metal-mediated transformations, the N-heterocyclic hypervalent iodine reagents gave inferior results when compared to the O-based EBX reagents.
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Affiliation(s)
- Eliott Le Du
- Laboratory of Catalysis and Organic SynthesisEcole Polytechnique Fédérale de LausanneEPFL SB ISIC LCSO, BCH 43061015LausanneSwitzerland
| | - Thibaut Duhail
- Institut Lavoisier de VersaillesUniversité Paris-Saclay, UVSQ, CNRS, UMR 81807800VersaillesFrance
| | - Matthew D. Wodrich
- Laboratory of Catalysis and Organic SynthesisEcole Polytechnique Fédérale de LausanneEPFL SB ISIC LCSO, BCH 43061015LausanneSwitzerland
| | - Rosario Scopelliti
- Institute of Chemical Sciences and EngineeringEcole Polytechnique Fédérale de LausanneEPFL SB ISIC GE, BCH 2111, 1015 LausanneEPFL SB ISIC LCSO, BCH 43061015LausanneSwitzerland
| | - Farzaneh Fadaei‐Tirani
- Institute of Chemical Sciences and EngineeringEcole Polytechnique Fédérale de LausanneEPFL SB ISIC GE, BCH 2111, 1015 LausanneEPFL SB ISIC LCSO, BCH 43061015LausanneSwitzerland
| | - Elsa Anselmi
- Institut Lavoisier de VersaillesUniversité Paris-Saclay, UVSQ, CNRS, UMR 81807800VersaillesFrance
- Université de ToursFaculté des Sciences et Techniques37200ToursFrance
| | - Emmanuel Magnier
- Institut Lavoisier de VersaillesUniversité Paris-Saclay, UVSQ, CNRS, UMR 81807800VersaillesFrance
| | - Jerome Waser
- Laboratory of Catalysis and Organic SynthesisEcole Polytechnique Fédérale de LausanneEPFL SB ISIC LCSO, BCH 43061015LausanneSwitzerland
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41
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Dicarboxylation of alkenes, allenes and (hetero)arenes with CO2 via visible-light photoredox catalysis. Nat Catal 2021. [DOI: 10.1038/s41929-021-00594-1] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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42
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Zhang JJ, Chen D, Qin YQ, Deng W, Luo YY, Xiang JN. Oxidative alkylation/alkynylation of terminal alkenes via alkylaldehyde decarbonylation and 1,2-alkynyl migration. Org Biomol Chem 2021; 19:3154-3158. [PMID: 33885569 DOI: 10.1039/d1ob00212k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
A metal-free oxidative alkene alkylation/alkynylation of 1,4-enyn-3-ols with alkylaldehydes has been achieved, which offers a general access to the challenging quaternary carbon-containing but-3-yn-1-ones. The method features excellent functional group tolerance, broad substrate scope and exquisite selectivity, and provides a strategy for the difunctionalization of functional alkenes and utilization of alkylaldehydes as alkylating reagents through decarbonylation and 1,2-alkynyl migration.
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Affiliation(s)
- Jia-Jia Zhang
- Advanced Catalytic Engineering Research Center of Education, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China.
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43
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Jin S, Chen F, Qian P, Cheng J. Cyanoalkylation/alkynylation of allylic alcohol through intramolecular radical 1,2-alkynyl migration. Org Biomol Chem 2021; 19:2416-2419. [PMID: 33645595 DOI: 10.1039/d1ob00192b] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A di-tert-butyl peroxide (DTBP)-promoted difunctionalization of α-aryl α-alkynyl allylic alcohols with alkyl nitriles was developed, affording a series of α-alkynyl γ-cyano functionalized ketones in moderate yields. This procedure involved C(sp3)-H bond cleavage of alkyl nitriles and radical 3-exo-dig cyclization. After this, radical 1,2-alkynyl migration is preferred rather than 1,2-aryl migration.
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Affiliation(s)
- Shengnan Jin
- Institute of New Materials & Industry Technology, College of Chemistry&Materials Engineering, Wenzhou University, Wenzhou 325035, P. R. China.
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44
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Yu J, Yang NY, Cheng JT, Zhan TY, Luan C, Ye L, Gu QS, Li ZL, Chen GQ, Liu XY. Copper-Catalyzed Radical 1,2-Carbotrifluoromethylselenolation of Alkenes under Ambient Conditions. Org Lett 2021; 23:1945-1949. [PMID: 33625234 DOI: 10.1021/acs.orglett.1c00436] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We have described a copper-catalyzed radical 1,2-carbotrifluoromethylselenolation of alkenes using the readily available alkyl halides and (Me4N)SeCF3 salt. Critical to the success is the use of a proline-based N,N,P-ligand to enhance the reducing capability of copper for easy conversion of diverse alkyl halides to the corresponding radicals via a single-electron transfer process. The reaction features a broad substrate scope, including various mono-, di-, and trisubstituted alkenes with many functional groups.
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Affiliation(s)
- Jiao Yu
- College of Chemistry and Environmental Engineering, Shenzhen University, 1066 Xueyuan Road, Shenzhen 518071, China.,College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China.,Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen 518055, China
| | - Ning-Yuan Yang
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen 518055, China
| | - Jiang-Tao Cheng
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen 518055, China
| | - Tian-Ya Zhan
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen 518055, China
| | - Cheng Luan
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen 518055, China
| | - Liu Ye
- Academy for Advanced Interdisciplinary Studies and Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
| | - Qiang-Shuai Gu
- Academy for Advanced Interdisciplinary Studies and Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
| | - Zhong-Liang Li
- Academy for Advanced Interdisciplinary Studies and Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
| | - Guo-Qiang Chen
- College of Chemistry and Environmental Engineering, Shenzhen University, 1066 Xueyuan Road, Shenzhen 518071, China
| | - Xin-Yuan Liu
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen 518055, China
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45
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Palate KY, Epton RG, Whitwood AC, Lynam JM, Unsworth WP. Synthesis of macrocyclic and medium-sized ring thiolactones via the ring expansion of lactams. Org Biomol Chem 2021; 19:1404-1411. [PMID: 33491715 DOI: 10.1039/d0ob02502j] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
A side chain insertion method for the ring expansion of lactams into macrocyclic thiolactones is reported, that can also be incorporated into Successive Ring Expansion (SuRE) sequences. The reactions are less thermodynamically favourable than the analogous lactam- and lactone-forming ring expansion processes (with this notion supported by DFT data), but nonetheless, three complementary protecting group strategies have been developed to enable this challenging transformation to be achieved.
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Affiliation(s)
- Kleopas Y Palate
- Department of Chemistry, University of York, Heslington, York, YO10 5DD, UK.
| | - Ryan G Epton
- Department of Chemistry, University of York, Heslington, York, YO10 5DD, UK.
| | - Adrian C Whitwood
- Department of Chemistry, University of York, Heslington, York, YO10 5DD, UK.
| | - Jason M Lynam
- Department of Chemistry, University of York, Heslington, York, YO10 5DD, UK.
| | - William P Unsworth
- Department of Chemistry, University of York, Heslington, York, YO10 5DD, UK.
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46
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Zhao Y, Zhang Y, Liu Y, Zhu T, Wu J. Photoredox-catalyzed direct C(sp 2)–H difluoromethylation of enamides or heterocycles with [bis(difluoroacetoxy)iodo]benzene. Org Chem Front 2021. [DOI: 10.1039/d1qo00995h] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A photoredox-catalyzed direct C(sp2)–H difluoromethylation of enamides and heterocycles is accomplished by using easily accessible [bis(difluoroacetoxy)iodo]benzene as the CF2H source.
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Affiliation(s)
- Yun Zhao
- School of Pharmaceutical and Materials Engineering & Institute for Advanced Studies, Taizhou University, 1139 Shifu Avenue, Taizhou 318000, China
| | - Yan Zhang
- School of Pharmaceutical and Materials Engineering & Institute for Advanced Studies, Taizhou University, 1139 Shifu Avenue, Taizhou 318000, China
| | - Yating Liu
- School of Pharmaceutical and Materials Engineering & Institute for Advanced Studies, Taizhou University, 1139 Shifu Avenue, Taizhou 318000, China
| | - Tonghao Zhu
- School of Pharmaceutical and Materials Engineering & Institute for Advanced Studies, Taizhou University, 1139 Shifu Avenue, Taizhou 318000, China
| | - Jie Wu
- School of Pharmaceutical and Materials Engineering & Institute for Advanced Studies, Taizhou University, 1139 Shifu Avenue, Taizhou 318000, China
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, China
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Qiu Y, Wei F, Ye L, Zhao M. Advances in Trifluoromethylation-Promoted Functional Group Migration of Alkenes. CHINESE J ORG CHEM 2021. [DOI: 10.6023/cjoc202009036] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Zhang P, Zhang T, Cai P, Jiang B, Tu S. Study on tert-Butyl Radical-Initiated 1,2-Alkynyl Migration. CHINESE J ORG CHEM 2021. [DOI: 10.6023/cjoc202101042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Zhao K, Guo JY, Guan T, Wang YX, Tao JY, Zhang Y, Zhang QH, Ni K, Loh TP. Photoinitiated stereoselective direct C(sp 2)–H perfluoroalkylation and difluoroacetylation of enamides. Org Chem Front 2021. [DOI: 10.1039/d1qo00605c] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Photoinitiated regio- and stereoselective C(sp2)–H perfluoroalkylation and difluoroacetylation of enamides are developed, furnishing biologically and physiologically privileged fluoro-containing enamide scaffolds.
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Affiliation(s)
- Kai Zhao
- Institute of Advanced Synthesis
- School of Chemistry and Molecular Engineering
- Jiangsu National Synergetic Innovation Center for Advanced Materials
- Nanjing Tech University
- Nanjing 211816
| | - Jing-Yu Guo
- Institute of Advanced Synthesis
- School of Chemistry and Molecular Engineering
- Jiangsu National Synergetic Innovation Center for Advanced Materials
- Nanjing Tech University
- Nanjing 211816
| | - Ting Guan
- Institute of Advanced Synthesis
- School of Chemistry and Molecular Engineering
- Jiangsu National Synergetic Innovation Center for Advanced Materials
- Nanjing Tech University
- Nanjing 211816
| | - Ying-Xue Wang
- Institute of Advanced Synthesis
- School of Chemistry and Molecular Engineering
- Jiangsu National Synergetic Innovation Center for Advanced Materials
- Nanjing Tech University
- Nanjing 211816
| | - Ji-Yu Tao
- Institute of Advanced Synthesis
- School of Chemistry and Molecular Engineering
- Jiangsu National Synergetic Innovation Center for Advanced Materials
- Nanjing Tech University
- Nanjing 211816
| | - Yu Zhang
- College of Chemical Engineering
- Nanjing Forestry University
- Nanjing 210037
- China
| | - Qing-Hong Zhang
- Institute of Advanced Synthesis
- School of Chemistry and Molecular Engineering
- Jiangsu National Synergetic Innovation Center for Advanced Materials
- Nanjing Tech University
- Nanjing 211816
| | - Kun Ni
- Institute of Advanced Synthesis
- School of Chemistry and Molecular Engineering
- Jiangsu National Synergetic Innovation Center for Advanced Materials
- Nanjing Tech University
- Nanjing 211816
| | - Teck-Peng Loh
- Institute of Advanced Synthesis
- School of Chemistry and Molecular Engineering
- Jiangsu National Synergetic Innovation Center for Advanced Materials
- Nanjing Tech University
- Nanjing 211816
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Zhang X, Lin L, Li J, Duan S, Long Y, Li J. Recent Progress in the Synthesis of Medium-Sized Ring and Macrocyclic Compounds. CHINESE J ORG CHEM 2021. [DOI: 10.6023/cjoc202010026] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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