1
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Zhang T, Rabeah J, Das S. Red-light-mediated copper-catalyzed photoredox catalysis promotes regioselectivity switch in the difunctionalization of alkenes. Nat Commun 2024; 15:5208. [PMID: 38890327 PMCID: PMC11189478 DOI: 10.1038/s41467-024-49514-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2024] [Accepted: 06/05/2024] [Indexed: 06/20/2024] Open
Abstract
Controlling regioselectivity during difunctionalization of alkenes remains a significant challenge, particularly when the installation of both functional groups involves radical processes. In this aspect, methodologies to install trifluoromethane (-CF3) via difunctionalization have been explored, due to the importance of this moiety in the pharmaceutical sectors; however, these existing reports are limited, most of which affording only the corresponding β-trifluoromethylated products. The main reason for this limitation arises from the fact that -CF3 group served as an initiator in those reactions and predominantly preferred to be installed at the terminal (β) position of an alkene. On the contrary, functionalization of the -CF3 group at the internal (α) position of alkenes would provide valuable products, but a meticulous approach is necessary to win this regioselectivity switch. Intrigued by this challenge, we here develop an efficient and regioselective strategy where the -CF3 group is installed at the α-position of an alkene. Molecular complexity is achieved via the simultaneous insertion of a sulfonyl fragment (-SO2R) at the β-position. A precisely regulated sequence of radical generation using red light-mediated photocatalysis facilitates this regioselective switch from the terminal (β) position to the internal (α) position. Furthermore, this approach demonstrates broad substrate scope and industrial potential for the synthesis of pharmaceuticals under mild reaction conditions.
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Affiliation(s)
- Tong Zhang
- Department of Chemistry, University of Antwerp, Antwerp, Belgium
| | - Jabor Rabeah
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock (LIKAT), Rostock, Germany
- State Key Laboratory of Low Carbon Catalysis and Carbon Dioxide Utilization, Lanzhou Institute of Chemical Physics (LICP), Chinese Academy of Sciences, Lanzhou, P. R. China
| | - Shoubhik Das
- Department of Chemistry, University of Antwerp, Antwerp, Belgium.
- Department of Chemistry, University of Bayreuth, Bayreuth, Germany.
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2
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Xue JH, Li Y, Liu Y, Li Q, Wang H. Site-Specific Deaminative Trifluoromethylation of Aliphatic Primary Amines. Angew Chem Int Ed Engl 2024; 63:e202319030. [PMID: 38179851 DOI: 10.1002/anie.202319030] [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: 12/11/2023] [Revised: 01/02/2024] [Accepted: 01/03/2024] [Indexed: 01/06/2024]
Abstract
The introduction of trifluoromethyl groups into organic molecules is of paramount importance in modern synthetic chemistry and medicinal chemistry. While methods for constructing C(sp2 )-CF3 bonds have been well established, the advancement of practical and comprehensive approaches for forming C(sp3 )-CF3 bonds remains considerably restricted. In this work, we describe an efficient and site-specific deaminative trifluoromethylation reaction of aliphatic primary amines to afford the corresponding alkyl trifluoromethyl compounds. The reaction proceeds at room temperature with readily accessible N-anomeric amide (Levin's reagent) and bench-stable bpyCu(CF3 )3 (Grushin's reagent, bpy=2,2'-bipyridine) under blue light. The protocol features mild reaction conditions, good functional group tolerance, and moderate to good yields. Remarkably, the method can be applied to the direct, late-stage trifluoromethylation of natural products and bioactive molecules. Experimental mechanistic studies were conducted, and a radical mechanism is proposed, wherein the dual roles of Grushin's reagent have been elucidated.
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Affiliation(s)
- Jiang-Hao Xue
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou, 510006, China
| | - Yin Li
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou, 510006, China
| | - Yuan Liu
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou, 510006, China
| | - Qingjiang Li
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou, 510006, China
| | - Honggen Wang
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou, 510006, China
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3
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Chen DD, Zhang SL. Dual Oxidation of Epoxides with a High-Valent Cu(III)-CF 3 Compound and DMSO to Access 1,2-Diketones. J Org Chem 2023. [PMID: 38050841 DOI: 10.1021/acs.joc.3c01160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2023]
Abstract
This study reports sequential dehydrogenation and transfer oxygenation of 1,2-diarylepoxides by high-valent phenCu(III)(CF3)3 and DMSO to produce 1,2-diketones. The Cu(III)-CF3 compound serves as a CF3 radical source to abstract the hydrogen atom of the epoxide ring. The resulting ether α-carbon radical undergoes ring-opening rearrangement to give a ketone α-carbon radical intermediate, which is oxygenated by DMSO with the release of Me2S. The combination of a Cu(III)-CF3 compound and DMSO may be exploited to develop other novel oxidation reactions.
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Affiliation(s)
- Dou-Dou Chen
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Song-Lin Zhang
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, Jiangsu 214122, China
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4
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Cao E, Sun M. Spectral Physics of Stable Cu(III) Produced by Oxidative Addition of an Alkyl Halide. Int J Mol Sci 2023; 24:15694. [PMID: 37958679 PMCID: PMC10648560 DOI: 10.3390/ijms242115694] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2023] [Revised: 10/23/2023] [Accepted: 10/26/2023] [Indexed: 11/15/2023] Open
Abstract
In this paper, we theoretically investigated spectral physics on Cu(III) complexes formed by the oxidative addition of α-haloacetonitrile to ionic and neutral Cu(I) complexes, stimulated by recent experimental reports. Firstly, the electronic structures of reactants of α-haloacetonitrile and neutral Cu(I) and two kinds of products of Cu(III) complexes are visualized with the density of state (DOS) and orbital energy levels of HOMO and LUMO. The visually manifested static and dynamic polarizability as well as the first hyperpolarizability are employed to reveal the vibrational modes of the normal and resonance Raman spectra of two Cu(III) complexes. The nuclear magnetic resonance (NMR) spectra are not only used to identify the reactants and products but also to distinguish between two Cu(III) complexes. The charge difference density (CDD) reveals intramolecular charge transfer in electronic transitions in optical absorption spectra. The CDDs in fluorescence visually reveal electron-hole recombination. Our results promote a deeper understanding of the physical mechanism of stable Cu(III) produced by the oxidative addition of an alkyl halide.
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Affiliation(s)
- En Cao
- School of Mathematics and Physics, University of Science and Technology Beijing, Beijing 100083, China;
- Research Institute for Electronic Science, Hokkaido University, Sapporo 001-0021, Japan
| | - Mengtao Sun
- School of Mathematics and Physics, University of Science and Technology Beijing, Beijing 100083, China;
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5
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Demonti L, Joven-Sancho D, Nebra N. Cross-Coupling Reactions Enabled by Well-Defined Ag(III) Compounds: Main Focus on Aromatic Fluorination and Trifluoromethylation. CHEM REC 2023; 23:e202300143. [PMID: 37338273 DOI: 10.1002/tcr.202300143] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2023] [Revised: 05/31/2023] [Indexed: 06/21/2023]
Abstract
AgIII compounds are considered strong oxidizers of difficult handling. Accordingly, the involvement of Ag catalysts in cross-coupling via 2e- redox sequences is frequently discarded. Nevertheless, organosilver(III) compounds have been authenticated using tetradentate macrocycles or perfluorinated groups as supporting ligands, and since 2014, first examples of cross-coupling enabled by AgI /AgIII redox cycles saw light. This review collects the most relevant contributions to this field, with main focus on aromatic fluorination/perfluoroalkylation and the identification of AgIII key intermediates. Pertinent comparison between the activity of AgIII RF compounds in aryl-F and aryl-CF3 couplings vs. the one shown by its CuIII RF and AuIII RF congeners is herein disclosed, thus providing a more profound picture on the scope of these transformations and the pathways commonly associated to C-RF bond formations enabled by coinage metals.
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Affiliation(s)
- Luca Demonti
- Laboratoire Hétérochimie Fondamentale et Appliquée (LHFA)., Université Paul Sabatier, CNRS., 118 Route de Narbonne, 31062, Toulouse, France)
| | - Daniel Joven-Sancho
- Laboratoire Hétérochimie Fondamentale et Appliquée (LHFA)., Université Paul Sabatier, CNRS., 118 Route de Narbonne, 31062, Toulouse, France)
| | - Noel Nebra
- Laboratoire Hétérochimie Fondamentale et Appliquée (LHFA)., Université Paul Sabatier, CNRS., 118 Route de Narbonne, 31062, Toulouse, France)
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6
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Lin D, Coe M, Krishnamurti V, Ispizua-Rodriguez X, Surya Prakash GK. Recent Advances in Visible Light-Mediated Radical Fluoro-alkylation, -alkoxylation, -alkylthiolation, -alkylselenolation, and -alkylamination. CHEM REC 2023; 23:e202300104. [PMID: 37212421 DOI: 10.1002/tcr.202300104] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Revised: 04/20/2023] [Indexed: 05/23/2023]
Abstract
In the last few years, many reagents and protocols have been developed to allow for the efficient fluorofunctionalization of a diverse set of scaffolds ranging from alkanes, alkenes, alkynes, and (hetero)arenes. The concomitant rise of organofluorine chemistry and visible light-mediated synthesis have synergistically expanded the fields and have mutually benefitted from developments in both fields. In this context, visible light driven formations of radicals containing fluorine have been a major focus for the discovery of new bioactive compounds. This review details the recent advances and progress made in visible light-mediated fluoroalkylation and heteroatom centered radical generation.
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Affiliation(s)
- Daniel Lin
- Loker Hydrocarbon Research Institute Department of Chemistry, University of Southern California, 837 Bloom Walk, 90089-1661, Los Angeles, CA, USA
| | - Matthew Coe
- Loker Hydrocarbon Research Institute Department of Chemistry, University of Southern California, 837 Bloom Walk, 90089-1661, Los Angeles, CA, USA
| | - Vinayak Krishnamurti
- Loker Hydrocarbon Research Institute Department of Chemistry, University of Southern California, 837 Bloom Walk, 90089-1661, Los Angeles, CA, USA
| | - Xanath Ispizua-Rodriguez
- Loker Hydrocarbon Research Institute Department of Chemistry, University of Southern California, 837 Bloom Walk, 90089-1661, Los Angeles, CA, USA
| | - G K Surya Prakash
- Loker Hydrocarbon Research Institute Department of Chemistry, University of Southern California, 837 Bloom Walk, 90089-1661, Los Angeles, CA, USA
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7
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Kawamura S, Sodeoka M. Understanding and Controlling Fluorinated Diacyl Peroxides and Fluoroalkyl Radicals in Alkene Fluoroalkylations. CHEM REC 2023; 23:e202300202. [PMID: 37522613 DOI: 10.1002/tcr.202300202] [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: 06/08/2023] [Revised: 07/11/2023] [Indexed: 08/01/2023]
Abstract
The demand for practical methods for the synthesis of novel fluoroalkyl molecules is increasing owing to their diverse applications. Our group has achieved efficient difunctionalizing fluoroalkylations of alkenes using fluorinated carboxylic anhydrides as user-friendly fluoroalkyl sources. Fluorinated diacyl peroxide, prepared in situ from carboxylic anhydrides, enables the development of novel reactions when used as a radical fluoroalkylating reagent. In this account, we aim to provide an in-depth understanding of the structure, bonding, and reactivity of fluorinated diacyl peroxides and radicals as well as their control in fluoroalkylation reactions. In the first part of this account, the physical properties and reactivity of diacyl peroxides and fluoroalkyl radicals are described. In the subsequent part, we categorize the reactions into copper-catalyzed and metal-free methods utilizing the oxidizing properties of fluorinated diacyl peroxides. We also outline examples and mechanisms.
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Affiliation(s)
- Shintaro Kawamura
- Catalysis and Integrated Research Group, RIKEN Center for Sustainable Resource Science, 2-1 Hirosawa, Wako, Saitama, 351-0198, Japan
- Synthetic Organic Chemistry Laboratory, RIKEN Cluster for Pioneering Research, 2-1 Hirosawa, Wako, Saitama, 351-0198, Japan
| | - Mikiko Sodeoka
- Catalysis and Integrated Research Group, RIKEN Center for Sustainable Resource Science, 2-1 Hirosawa, Wako, Saitama, 351-0198, Japan
- Synthetic Organic Chemistry Laboratory, RIKEN Cluster for Pioneering Research, 2-1 Hirosawa, Wako, Saitama, 351-0198, Japan
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8
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Zhao YR, Zhou Y, Hu M. Synthesis of trifluoromethylated allenes via visible light-promoted bis(trifluoromethylation) of 1,3-enynes. J Fluor Chem 2023. [DOI: 10.1016/j.jfluchem.2023.110105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/25/2023]
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9
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Pan X, Talavera M, Braun T. Efficient hydrostannation of fluorinated alkenes. J Fluor Chem 2023. [DOI: 10.1016/j.jfluchem.2023.110116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/18/2023]
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10
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Tang JB, Bian JQ, Zhang YS, Cheng YF, Wen HT, Yu ZL, Li ZL, Gu QS, Chen GQ, Liu XY. Copper-Catalyzed anti-Selective Radical 1,2-Alkylarylation of Terminal Alkynes. Org Lett 2022; 24:2536-2540. [PMID: 35344658 DOI: 10.1021/acs.orglett.2c00692] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A copper-catalyzed highly anti-selective radical 1,2-alkylarylation of terminal alkynes with aryl boronic acids and alkyl bromides has been established. The reaction exhibits high compatibility with a wide range of terminal alkynes and diverse aryl boronic acids, thus providing facile access to various stereodefined trisubstituted alkenes in high yield under mild reaction conditions. Preliminary mechanistic investigations support the formation of alkyl radicals and their subsequent addition to alkynes in the reaction.
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Affiliation(s)
- Jun-Bin Tang
- College of Chemistry and Environmental Engineering, Shenzhen University, 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
| | - Jun-Qian Bian
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen 518055, China
| | - Yu-Shuai Zhang
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen 518055, China
| | - Yong-Feng Cheng
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen 518055, China
| | - Han-Tao Wen
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen 518055, China
| | - Zhang-Long Yu
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, 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
| | - Qiang-Shuai Gu
- 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, 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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11
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Ramani A, Desai B, Patel M, Naveen T. Recent advances in the functionalization of terminal and internal alkynes. ASIAN J ORG CHEM 2022. [DOI: 10.1002/ajoc.202200047] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Arti Ramani
- Sardar Vallabhbhai National Institute of Technology Department of chemistry INDIA
| | - Bhargav Desai
- Sardar Vallabhbhai National Institute of Technology Department of chemistry INDIA
| | - Monak Patel
- Sardar Vallabhbhai National Institute of Technology Department of chemistry INDIA
| | - Togati Naveen
- SVNIT Surat: Sardar Vallabhbhai National Institute of Technology Applied Chemistry Room No: 115, Applied Chemistry DepartmentSVNIT Surat 395007 SURAT INDIA
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12
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Mandal D, Maji S, Pal T, Sinha SK, Maiti D. Recent Advances in Transition-Metal Mediated Trifluoromethylation Reactions. Chem Commun (Camb) 2022; 58:10442-10468. [DOI: 10.1039/d2cc04082d] [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
Fluorine compounds are known for their abundance in more than 20% of pharmaceutical and agrochemical products mainly due to the enhanced lipophilicity, metabolic stability and pharmacokinetic properties of organofluorides. Consequently,...
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13
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Li HP, He XH, Peng C, Li JL, Han B. A straightforward access to trifluoromethylated natural products through late-stage functionalization. Nat Prod Rep 2022; 40:988-1021. [DOI: 10.1039/d2np00056c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
This review summarizes the applications of late-stage strategies in the direct trifluoromethylation of natural products in the past ten years, with particular emphasis on the reaction model of each method.
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Affiliation(s)
- He-Ping Li
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
| | - Xiang-Hong He
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
| | - Cheng Peng
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
| | - Jun-Long Li
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics, School of Pharmacy, Chengdu University, Chengdu 610106, China
| | - Bo Han
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
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14
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Qiu J, Le S, Su J, Liu Y, Zhou Y, Zheng H, Bai Y, Zhu G. A diastereoselective synthesis of cyclopentanones via photocatalytic reductive alkyltrifluoromethylation of ynones. Org Chem Front 2022. [DOI: 10.1039/d2qo01101h] [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 photocatalytic reductive alkyltrifluoromethylation of ynones with the Langlois reagent is developed, providing a regio- and diastereoselective access to trifluoromethylated cyclopentanones under mild conditions.
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Affiliation(s)
- Jiayan Qiu
- 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
| | - Siya Le
- 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
| | - Jingwen Su
- 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
| | - Yi Liu
- 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
| | - Yulu Zhou
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, P. R. China
| | - Hanliang Zheng
- 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
| | - Yihui Bai
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, P. R. China
| | - Gangguo Zhu
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, P. R. China
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15
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Yan ZH, Li WC, Wu YH, Yan QB, Wei ZL, Liao WW. Electrochemical cyclization of N-cyanamide alkenes with CF 3SO 2Na to access C, N-(bis)trifluoromethylated cyclic amidines and related compounds. Org Chem Front 2022. [DOI: 10.1039/d2qo01323a] [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
An electrochemical trifluoromethylative cyclization of N-cyanamide alkenes and alkynes is presented, which afforded (bis)-C,N-trifluoromethylated cyclic amidines, azines and amides with selective multiple bond formations in a controllable manner.
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Affiliation(s)
- Zhi-Hua Yan
- Department of Organic Chemistry, College of Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Wen-Cheng Li
- Department of Organic Chemistry, College of Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Yu-Heng Wu
- Department of Organic Chemistry, College of Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Qi-Bo Yan
- Department of Organic Chemistry, College of Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Zhong-Lin Wei
- Department of Organic Chemistry, College of Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Wei-Wei Liao
- Department of Organic Chemistry, College of Chemistry, Jilin University, Changchun 130012, P. R. China
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, P. R. China
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16
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Crystal structure of bis{hydridotris(3-trifluoromethyl-5-methylpyrazolyl-1-yl)borato-κN
3}manganese(II), C30H26B2F18MnN12. Z KRIST-NEW CRYST ST 2021. [DOI: 10.1515/ncrs-2021-0395] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
C30H26B2F18MnN12, triclinic,
P
1
‾
$P\overline{1}$
(no. 2), a = 10.5322(3) Å, b = 10.6475(4) Å, c = 10.9890(4) Å, α = 111.755(3)°, β = 99.100(2)°, γ = 112.740(3)°, V = 988.07(7) Å3, Z = 1, R
gt
(F) = 0.0338, wR
ref
(F
2) = 0.0907, T = 178 K.
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17
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Demonti L, Saffon-Merceron N, Mézailles N, Nebra N. Cross-Coupling through Ag(I)/Ag(III) Redox Manifold. Chemistry 2021; 27:15396-15405. [PMID: 34473859 DOI: 10.1002/chem.202102836] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Indexed: 01/07/2023]
Abstract
In ample variety of transformations, the presence of silver as an additive or co-catalyst is believed to be innocuous for the efficiency of the operating metal catalyst. Even though Ag additives are required often as coupling partners, oxidants or halide scavengers, its role as a catalytically competent species is widely neglected in cross-coupling reactions. Most likely, this is due to the erroneously assumed incapacity of Ag to undergo 2e- redox steps. Definite proof is herein provided for the required elementary steps to accomplish the oxidative trifluoromethylation of arenes through AgI /AgIII redox catalysis (i. e. CEL coupling), namely: i) easy AgI /AgIII 2e- oxidation mediated by air; ii) bpy/phen ligation to AgIII ; iii) boron-to-AgIII aryl transfer; and iv) ulterior reductive elimination of benzotrifluorides from an [aryl-AgIII -CF3 ] fragment. More precisely, an ultimate entry and full characterization of organosilver(III) compounds [K]+ [AgIII (CF3 )4 ]- (K-1), [(bpy)AgIII (CF3 )3 ] (2) and [(phen)AgIII (CF3 )3 ] (3), is described. The utility of 3 in cross-coupling has been showcased unambiguously, and a large variety of arylboron compounds was trifluoromethylated via [AgIII (aryl)(CF3 )3 ]- intermediates. This work breaks with old stereotypes and misconceptions regarding the inability of Ag to undergo cross-coupling by itself.
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Affiliation(s)
- Luca Demonti
- Laboratoire Hétérochimie Fondamentale et Appliquée (LHFA), Université Paul Sabatier, CNRS, 118 Route de Narbonne, 31062, Toulouse, France
| | - Nathalie Saffon-Merceron
- Institut de Chimie de Toulouse ICT-UAR2599, Université Paul Sabatier, CNRS, 31062, Toulouse Cedex, France
| | - Nicolas Mézailles
- Laboratoire Hétérochimie Fondamentale et Appliquée (LHFA), Université Paul Sabatier, CNRS, 118 Route de Narbonne, 31062, Toulouse, France
| | - Noel Nebra
- Laboratoire Hétérochimie Fondamentale et Appliquée (LHFA), Université Paul Sabatier, CNRS, 118 Route de Narbonne, 31062, Toulouse, France
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18
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Tagami T, Aoki Y, Kawamura S, Sodeoka M. 1,2-Bis-perfluoroalkylations of alkenes and alkynes with perfluorocarboxylic anhydrides via the formation of perfluoroalkylcopper intermediates. Org Biomol Chem 2021; 19:9148-9153. [PMID: 34523640 DOI: 10.1039/d1ob01529j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel, Cu-mediated protocol toward the 1,2-bis-perfluoroalkyaltion of alkenes/alkynes was developed. The method proceeded with perfluorocarboxylic anhydrides as inexpensive and readily available perfluoroalkyl sources. Diacyl peroxide was generated in situ from the perfluorocarboxylic anhydrides and H2O2. The key step in this reaction is the formation of a stable perfluoroalkylcopper intermediate that is achieved with the aid of a bipyridyl ligand. Subsequent reaction of the intermediate with perfluoroalkyl-containing alkyl or vinyl radicals affords the desired products.
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Affiliation(s)
- Takuma Tagami
- Catalysis and Integrated Research Group, RIKEN Center for Sustainable Resource Science, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan.
| | - Yuma Aoki
- Catalysis and Integrated Research Group, RIKEN Center for Sustainable Resource Science, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan.
| | - Shintaro Kawamura
- Catalysis and Integrated Research Group, RIKEN Center for Sustainable Resource Science, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan. .,Synthetic Organic Chemistry Laboratory, RIKEN Cluster for Pioneering Research, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Mikiko Sodeoka
- Catalysis and Integrated Research Group, RIKEN Center for Sustainable Resource Science, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan. .,Synthetic Organic Chemistry Laboratory, RIKEN Cluster for Pioneering Research, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
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19
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Dong X, Jiang W, Hua D, Wang X, Xu L, Wu X. Radical-mediated vicinal addition of alkoxysulfonyl/fluorosulfonyl and trifluoromethyl groups to aryl alkyl alkynes. Chem Sci 2021; 12:11762-11768. [PMID: 34659713 PMCID: PMC8442677 DOI: 10.1039/d1sc03315h] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Accepted: 08/02/2021] [Indexed: 12/18/2022] Open
Abstract
The addition of sulfonyl radicals to alkenes and alkynes is a valuable method for constructing useful highly functionalized sulfonyl compounds. The underexplored alkoxy- and fluorosulfonyl radicals are easily accessed by CF3 radical addition to readily available allylsulfonic acid derivatives and then β-fragmentation. These substituted sulfonyl radicals add to aryl alkyl alkynes to give vinyl radicals that are trapped by trifluoromethyl transfer to provide tetra-substituted alkenes bearing the privileged alkoxy- or fluorosulfonyl group on one carbon and a trifluoromethyl group on the other. This process exhibits broad functional group compatibility and allows for the late-stage functionalization of drug molecules, demonstrating its potential in drug discovery and chemical biology. An unprecedented method for vicinal addition of alkoxysulfonyl/fluorosulfonyl and trifluoromethyl groups to aryl alkyl alkynes has been developed to afford useful alkenylsulfonate esters and alkenylsulfonyl fluorides.![]()
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Affiliation(s)
- Xinrui Dong
- State Key Laboratory of Natural Medicines, Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University Nanjing 211198 China
| | - Wenhua Jiang
- State Key Laboratory of Natural Medicines, Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University Nanjing 211198 China
| | - Dexiang Hua
- State Key Laboratory of Natural Medicines, Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University Nanjing 211198 China
| | - Xiaohui Wang
- State Key Laboratory of Natural Medicines, Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University Nanjing 211198 China
| | - Liang Xu
- School of Chemistry and Chemical Engineering, Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, Shihezi University Shihezi 832003 China
| | - Xiaoxing Wu
- State Key Laboratory of Natural Medicines, Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University Nanjing 211198 China
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20
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Liu H, Shen Q. Well-defined organometallic Copper(III) complexes: Preparation, characterization and reactivity. Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2021.213923] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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21
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Zhang Q, Li X, Zhang W, Wang Y, Pan Y. Photocatalyzed Radical Relayed Regio- and Stereoselective Trifluoromethylthiolation-Boration. Org Lett 2021; 23:5410-5414. [PMID: 34180679 DOI: 10.1021/acs.orglett.1c01737] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Vinylboronates and alkylboronates are key components in variegated transformations in all aspects of chemical science. This work describes a sequential radical difunctionalization strategy for the construction of fluorine-containing vinylboronates and alkylboronates with the integrated redox-active reagent N-trifluoromethylthiophthalimide. This multifunctional N-S precursor offers a scalable and practical protocol for the trifluoromethylthiolation-borylation of unsaturated hydrocarbons in a highly regio- and stereoselective fashion, which can be further converted into valuable synthons via boryl migration.
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Affiliation(s)
- Qiang Zhang
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, 163 Xianlin Avenue, 210023 Nanjing, People's Republic of China
| | - Xiaojuan Li
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, 163 Xianlin Avenue, 210023 Nanjing, People's Republic of China
| | - Weigang Zhang
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, 163 Xianlin Avenue, 210023 Nanjing, People's Republic of China
| | - Yi Wang
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, 163 Xianlin Avenue, 210023 Nanjing, People's Republic of China
| | - Yi Pan
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, 163 Xianlin Avenue, 210023 Nanjing, People's Republic of China
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22
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Zhang X, Lu D, Wang Z. Electrochemical Induced Regio‐ and Stereoselective Difunctionalization of Alkynes: The Synthesis of (
E
)‐β‐Iodovinyl Sulfones. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100505] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Xinghua Zhang
- School of Chemical and Environmental Engineering Shanghai Institute of Technology 100 Hai-Quan Road Shanghai 201418 China
- Institute of Drug Discovery Technology Ningbo University Ningbo 315211 China
| | - Danna Lu
- School of Chemical and Environmental Engineering Shanghai Institute of Technology 100 Hai-Quan Road Shanghai 201418 China
| | - Zhenwei Wang
- School of Chemical and Environmental Engineering Shanghai Institute of Technology 100 Hai-Quan Road Shanghai 201418 China
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23
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Zhang H, Xiao H, Jiang F, Fang Y, Zhu L, Li C. Copper-Catalyzed Ring-Opening 1,3-Aminotrifluoromethylation of Arylcyclopropanes. Org Lett 2021; 23:2268-2272. [PMID: 33689390 DOI: 10.1021/acs.orglett.1c00390] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The copper-catalyzed reaction of arylcyclopropanes, N-fluorobis(arenesulfonyl)imides, and (bpy)Zn(CF3)2 (bpy = 2,2'-bipyridine) at room temperature affords the corresponding ring-opening 1,3-aminotrifluoromethylation products in satisfactory yields. The protocol is highly regioselective, providing a convenient entry to γ-trifluoromethylated amines. A mechanism involving the trifluoromethylation of benzyl radicals is proposed.
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Affiliation(s)
- Huan Zhang
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Haiwen Xiao
- Key Laboratory of Organofluorine Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Feng Jiang
- Key Laboratory of Organofluorine Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Yewen Fang
- School of Materials and Chemical Engineering, Ningbo University of Technology, No. 201 Fenghua Road, Ningbo 315211, China
| | - Lin Zhu
- Key Laboratory of Organofluorine Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Chaozhong Li
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China.,Key Laboratory of Organofluorine Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China.,School of Materials and Chemical Engineering, Ningbo University of Technology, No. 201 Fenghua Road, Ningbo 315211, China
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24
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Choi G, Lee GS, Park B, Kim D, Hong SH. Direct C(sp
3
)−H Trifluoromethylation of Unactivated Alkanes Enabled by Multifunctional Trifluoromethyl Copper Complexes. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202012263] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Geunho Choi
- Department of Chemistry Korea Advanced Institute of Science and Technology (KAIST) Daejeon 34141 Republic of Korea
- Department of Chemistry, College of Natural Sciences Seoul National University Seoul 08826 Republic of Korea
| | - Geun Seok Lee
- Department of Chemistry Korea Advanced Institute of Science and Technology (KAIST) Daejeon 34141 Republic of Korea
- Department of Chemistry, College of Natural Sciences Seoul National University Seoul 08826 Republic of Korea
| | - Beomsoon Park
- Department of Chemistry Korea Advanced Institute of Science and Technology (KAIST) Daejeon 34141 Republic of Korea
| | - Dongwook Kim
- Department of Chemistry Korea Advanced Institute of Science and Technology (KAIST) Daejeon 34141 Republic of Korea
- Center for Catalytic Hydrocarbon Functionalizations Institute for Basic Science (IBS) Daejeon 34141 Republic of Korea
| | - Soon Hyeok Hong
- Department of Chemistry Korea Advanced Institute of Science and Technology (KAIST) Daejeon 34141 Republic of Korea
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25
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Choi G, Lee GS, Park B, Kim D, Hong SH. Direct C(sp
3
)−H Trifluoromethylation of Unactivated Alkanes Enabled by Multifunctional Trifluoromethyl Copper Complexes. Angew Chem Int Ed Engl 2021; 60:5467-5474. [DOI: 10.1002/anie.202012263] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Indexed: 01/02/2023]
Affiliation(s)
- Geunho Choi
- Department of Chemistry Korea Advanced Institute of Science and Technology (KAIST) Daejeon 34141 Republic of Korea
- Department of Chemistry, College of Natural Sciences Seoul National University Seoul 08826 Republic of Korea
| | - Geun Seok Lee
- Department of Chemistry Korea Advanced Institute of Science and Technology (KAIST) Daejeon 34141 Republic of Korea
- Department of Chemistry, College of Natural Sciences Seoul National University Seoul 08826 Republic of Korea
| | - Beomsoon Park
- Department of Chemistry Korea Advanced Institute of Science and Technology (KAIST) Daejeon 34141 Republic of Korea
| | - Dongwook Kim
- Department of Chemistry Korea Advanced Institute of Science and Technology (KAIST) Daejeon 34141 Republic of Korea
- Center for Catalytic Hydrocarbon Functionalizations Institute for Basic Science (IBS) Daejeon 34141 Republic of Korea
| | - Soon Hyeok Hong
- Department of Chemistry Korea Advanced Institute of Science and Technology (KAIST) Daejeon 34141 Republic of Korea
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26
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Liu ZY, Cook SP. Interrupting the Barton–McCombie Reaction: Aqueous Deoxygenative Trifluoromethylation of O-Alkyl Thiocarbonates. Org Lett 2021; 23:808-813. [DOI: 10.1021/acs.orglett.0c04039] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Zhi-Yun Liu
- Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405-7102, United States
| | - Silas P. Cook
- Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405-7102, United States
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27
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He J, Nguyen TN, Guo S, Cook SP. Csp3–H Trifluoromethylation of Unactivated Aliphatic Systems. Org Lett 2021; 23:702-705. [DOI: 10.1021/acs.orglett.0c03891] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jiachen He
- Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405-7102, United States
| | - Truong N. Nguyen
- Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405-7102, United States
| | - Shuo Guo
- Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405-7102, United States
| | - Silas P. Cook
- Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405-7102, United States
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28
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Abstract
Radical trifluoromethylation has been emerging as a versatile tool for the synthesis of trifluoromethylated compounds that play increasingly important roles in pharmaceuticals, agrochemicals and materials science.
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Affiliation(s)
- Haiwen Xiao
- School of Materials and Chemical Engineering, Ningbo University of Technology
- Ningbo 315211
- China
| | - Zhenzhen Zhang
- Key Laboratory of Organofluorine Chemistry
- Center for Excellence in Molecular Synthesis
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
| | - Yewen Fang
- School of Materials and Chemical Engineering, Ningbo University of Technology
- Ningbo 315211
- China
| | - Lin Zhu
- Key Laboratory of Organofluorine Chemistry
- Center for Excellence in Molecular Synthesis
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
| | - Chaozhong Li
- School of Materials and Chemical Engineering, Ningbo University of Technology
- Ningbo 315211
- China
- Key Laboratory of Organofluorine Chemistry
- Center for Excellence in Molecular Synthesis
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29
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Metal-free electrochemical oxidative trifluoromethylation/C(sp2) H functionalization of quinolinones. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.152226] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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30
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Shreiber ST, DiMucci IM, Khrizanforov MN, Titus CJ, Nordlund D, Dudkina Y, Cramer RE, Budnikova Y, Lancaster KM, Vicic DA. [(MeCN)Ni(CF 3) 3] - and [Ni(CF 3) 4] 2-: Foundations toward the Development of Trifluoromethylations at Unsupported Nickel. Inorg Chem 2020; 59:9143-9151. [PMID: 32573210 DOI: 10.1021/acs.inorgchem.0c01020] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Nickel anions [(MeCN)Ni(CF3)3]- and [Ni(CF3)4]2- were prepared by the formal addition of 3 and 4 equiv, respectively, of AgCF3 to [(dme)NiBr2] in the presence of the [PPh4]+ counterion. Detailed insights into the electronic properties of these new compounds were obtained through the use of density functional theory (DFT) calculations, spectroscopy-oriented configuration interaction (SORCI) calculations, X-ray absorption spectroscopy, and cyclic voltammetry. The data collectively show that trifluoromethyl complexes of nickel, even in the most common oxidation state of nickel(II), are highly covalent systems whereby a hole is distributed on the trifluoromethyl ligands, surprisingly rendering the metal to a physically more reduced state. In the cases of [(MeCN)Ni(CF3)3]- and [Ni(CF3)4]2-, these complexes are better physically described as d9 metal complexes. [(MeCN)Ni(CF3)3]- is electrophilic and reacts with other nucleophiles such as phenoxide to yield the unsupported [(PhO)Ni(CF3)3]2- salt, revealing the broader potential of [(MeCN)Ni(CF3)3]- in the development of "ligandless" trifluoromethylations at nickel. Proof-in-principle experiments show that the reaction of [(MeCN)Ni(CF3)3]- with an aryl iodonium salt yields trifluoromethylated arene, presumably via a high-valent, unsupported, and formal organonickel(IV) intermediate. Evidence of the feasibility of such intermediates is provided with the structurally characterized [PPh4]2[Ni(CF3)4(SO4)], which was derived through the two-electron oxidation of [Ni(CF3)4]2-.
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Affiliation(s)
- Scott T Shreiber
- Department of Chemistry, Lehigh University, 6 E. Packer Avenue, Bethlehem, Pennsylvania 18015, United States
| | - Ida M DiMucci
- Department of Chemistry and Chemical Biology, Baker Laboratory, Cornell University, Ithaca, New York 14853, United States
| | - Mikhail N Khrizanforov
- A. E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center of Russian Academy of Sciences, 8, Arbuzov Str., 420088 Kazan, Russian Federation
| | - Charles J Titus
- Department of Physics, Stanford University, Stanford, California 94305, United States
| | - Dennis Nordlund
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States
| | - Yulia Dudkina
- A. E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center of Russian Academy of Sciences, 8, Arbuzov Str., 420088 Kazan, Russian Federation
| | - Roger E Cramer
- Department of Chemistry, University of Hawaii, 2545 McCarthy Mall, Honolulu, Hawaii 96822, United States
| | - Yulia Budnikova
- A. E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center of Russian Academy of Sciences, 8, Arbuzov Str., 420088 Kazan, Russian Federation
| | - Kyle M Lancaster
- Department of Chemistry and Chemical Biology, Baker Laboratory, Cornell University, Ithaca, New York 14853, United States
| | - David A Vicic
- Department of Chemistry, Lehigh University, 6 E. Packer Avenue, Bethlehem, Pennsylvania 18015, United States
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31
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Xiong Z, Zhang F, Yu Y, Tan Z, Zhu G. AIBN-Induced Remote Trifluoromethyl-Alkynylation of Thioalkynes. Org Lett 2020; 22:4088-4092. [PMID: 32427485 DOI: 10.1021/acs.orglett.0c01147] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A novel α,α'-azobis(isobutyronitrile) (AIBN)-induced remote trifluoromethyl-alkynylation of thioalkynes with alkynyl triflones as both the trifluoromethyl and alkyne sources is described. Structurally diverse trifluoromethylated (Z)-enynes can be constructed with full control of regio-, stereo-, and site-selectivity, which serves as a highly selective method for the rapid construction of trifluoromethylated molecules.
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Affiliation(s)
- Zhimin Xiong
- 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
| | - Yongqi Yu
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, P.R. China
| | - Ze Tan
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, 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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32
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Mao Y, Zhao W, Lu S, Yu L, Wang Y, Liang Y, Ni S, Pan Y. Copper-catalysed photoinduced decarboxylative alkynylation: a combined experimental and computational study. Chem Sci 2020; 11:4939-4947. [PMID: 34122950 PMCID: PMC8159226 DOI: 10.1039/d0sc02213f] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Redox-active esters (RAEs) as alkyl radical precursors have demonstrated great advantages for C–C bond formation. A decarboxylative cross-coupling method is described to afford substituted alkynes from various carboxylic acids using copper catalysts CuCl and Cu(acac)2. The photoexcitation of copper acetylides with electron-rich NEt3 as a ligand provides a general strategy to generate a range of alkyl radicals from RAEs of carboxylic acids, which can be readily coupled with a variety of aromatic alkynes. The scope of this cross-coupling reaction can be further expanded to aliphatic alkynes and alkynyl silanes using a catalytic amount of preformed copper-phenylacetylide. In addition, DFT calculations revealed the favorable reaction pathway and that the bidentate acetylacetonate ligand of the copper intermediate plays an important role in inhibiting the homo-coupling of the alkyne. Redox-active esters (RAEs) as alkyl radical precursors have demonstrated great advantages for Cu-catalysed C–C bond formation.![]()
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Affiliation(s)
- Yu Mao
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University Nanjing 210023 China
| | - Wenxuan Zhao
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University Nanjing 210023 China
| | - Shuo Lu
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University Nanjing 210023 China
| | - Lei Yu
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University Nanjing 210023 China
| | - Yi Wang
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University Nanjing 210023 China
| | - Yong Liang
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University Nanjing 210023 China
| | - Shengyang Ni
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University Nanjing 210023 China
| | - Yi Pan
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University Nanjing 210023 China
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33
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Li C, Xue L, Zhou J, Zhao Y, Han G, Hou J, Song Y, Liu Y. Copper-Catalyzed Trifluoromethylation of Ynones Coupled with Dearomatizing Spirocyclization of Indoles: Access to CF 3-Containing Spiro[cyclopentane-1,3'-indole]. Org Lett 2020; 22:3291-3296. [PMID: 32227967 DOI: 10.1021/acs.orglett.0c01097] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A one-pot protocol for the Cu(I)-catalyzed difunctionalization of indolyl ynones has been achieved via trifluoromethylation of alkyne followed by dearomatizing spirocyclization of indoles. This cascade process enables constructing diverse CF3-containing spiro[cyclopentane-1,3'-indole] scaffolds in moderate to excellent yields which have challenging quaternary spirocyclic carbon and tetrasubstituted alkenes.
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Affiliation(s)
- Chengwen Li
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics, School of Pharmacy, Tianjin Medical University, Tianjin 300070, P.R. China
| | - Li Xue
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics, School of Pharmacy, Tianjin Medical University, Tianjin 300070, P.R. China
| | - Jiaxin Zhou
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics, School of Pharmacy, Tianjin Medical University, Tianjin 300070, P.R. China
| | - Yilin Zhao
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics, School of Pharmacy, Tianjin Medical University, Tianjin 300070, P.R. China
| | - Guifang Han
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics, School of Pharmacy, Tianjin Medical University, Tianjin 300070, P.R. China
| | - Jingli Hou
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics, School of Pharmacy, Tianjin Medical University, Tianjin 300070, P.R. China
| | - Yuguang Song
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics, School of Pharmacy, Tianjin Medical University, Tianjin 300070, P.R. China
| | - Yangping Liu
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics, School of Pharmacy, Tianjin Medical University, Tianjin 300070, P.R. China
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34
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Shang T, Zhang J, Zhang Y, Zhang F, Li XS, Zhu G. Photocatalytic Remote Oxyfluoroalkylation of Heteroalkynes: Regio-, Stereo-, and Site-Selective Access to Complex Fluoroalkylated (Z)-Alkenes. Org Lett 2020; 22:3667-3672. [DOI: 10.1021/acs.orglett.0c01163] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Tianbo Shang
- 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
| | - 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
| | - Yan 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
| | - 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
| | - Xin-Sheng Li
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, P. R. China
| | - Gangguo Zhu
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, P. R. China
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Liu S, Zeng X, Xu B. Practical fluorothiolation and difluorothiolation of alkenes using pyridine-HF and N-thiosuccinimides. Org Chem Front 2020. [DOI: 10.1039/c9qo01228a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Fluorothiolation and difluorothiolation of alkenes using pyridine-HF and N-thiosuccinimides.
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Affiliation(s)
- Shiwen Liu
- College of Textiles and Clothing
- Yancheng Institute of Technology
- Yancheng
- China
- Key Laboratory of Science and Technology of Eco-Textiles
| | - Xiaojun Zeng
- Key Laboratory of Science and Technology of Eco-Textiles
- Ministry of Education
- College of Chemistry
- Chemical Engineering and Biotechnology
- Donghua University
| | - Bo Xu
- Key Laboratory of Science and Technology of Eco-Textiles
- Ministry of Education
- College of Chemistry
- Chemical Engineering and Biotechnology
- Donghua University
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