1
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Zhu Y, Wu Z, Sun H, Ding J. Photo-Induced, Phenylhydrazine-Promoted Transition-Metal-Free Dehalogenation of Aryl Fluorides, Chlorides, Bromides, and Iodides. Molecules 2023; 28:6915. [PMID: 37836758 PMCID: PMC10574415 DOI: 10.3390/molecules28196915] [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: 09/13/2023] [Revised: 09/29/2023] [Accepted: 10/02/2023] [Indexed: 10/15/2023] Open
Abstract
In this study, we present a straightforward and highly effective photo-triggered hydrogenation method for aryl halides, devoid of transition-metal catalysts. Through the synergistic utilization of light, PhNHNH2, and a base, we have successfully initiated the desired radical-mediated hydrogenation process. Remarkably, utilizing mild reaction conditions, a wide range of aryl halides, including fluorides, chlorides, bromides, and iodides, can be selectively transformed into their corresponding (hetero)arene counterparts, with exceptional yields. Additionally, this approach demonstrates a remarkable compatibility with diverse functional groups and heterocyclic compounds, highlighting its versatility and potential for use in various chemical transformations.
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Affiliation(s)
- Yiwei Zhu
- School of Chemistry and Environmental Engineering, Anhui Polytechnic University, Wuhu 241000, China (J.D.)
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2
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Shi L, Xue X, Hong B, Li Q, Gu Z. Dirhodium(II)/Phosphine Catalyst with Chiral Environment at Bridging Site and Its Application in Enantioselective Atropisomer Synthesis. ACS CENTRAL SCIENCE 2023; 9:748-755. [PMID: 37122446 PMCID: PMC10141619 DOI: 10.1021/acscentsci.2c01207] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Indexed: 05/03/2023]
Abstract
A dirhodium(II)/phosphine catalyst with a chiral environment at the bridging site was developed for the asymmetric arylation of phenanthrene-9,10-diones with arylboronic acids. In contrast to the classic chiral bridging carboxylic acid (or derivatives) ligand strategy of bimetallic dirhodium(II) catalysis, in this reaction, tuning both axial and bridging ligands realized the first Rh2(OAc)4/phosphine-catalyzed highly enantioselective carbonyl addition reaction. The kinetic analysis reveals that dirhodium(II) and arylboronic acid follow the first-order kinetics, while phenanthrene-9,10-dione is zeroth-order. These data supported the proposed catalytic cycle, where the key intermediate in the rate-determining step involved the dirhodium(II) complex and arylboronic acid. Finally, axially chiral biaryls were prepared based on a newly developed oxidative ring-opening reaction of α-hydroxyl ketones with a base and molecular oxygen, which featured a central-to-axial chirality transfer radical β-scission step.
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Affiliation(s)
- Lei Shi
- Hefei
National Research Center for Physical Sciences at the Microscale and
Department of Chemistry, University of Science
and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, P. R. China
| | - Xiaoping Xue
- Hefei
National Research Center for Physical Sciences at the Microscale and
Department of Chemistry, University of Science
and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, P. R. China
| | - Biqiong Hong
- College
of Materials and Chemical Engineering, Minjiang
University, Fuzhou, Fujian 350108, China
| | - Qigang Li
- Hefei
National Research Center for Physical Sciences at the Microscale and
Department of Chemistry, University of Science
and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, P. R. China
| | - Zhenhua Gu
- Hefei
National Research Center for Physical Sciences at the Microscale and
Department of Chemistry, University of Science
and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, P. R. China
- College
of Materials and Chemical Engineering, Minjiang
University, Fuzhou, Fujian 350108, China
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3
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Vetrichelvan M, Sankar U, Bokkala V, Akunuri A, Ramesh N, Pitchai M, Mathur A, Gupta A. Chlorotrimethylsilane and Sodium Iodide: An Expedient Combination for the Chemo/Regioselective Dehalogenation of Benzothiazole and Thiazole Derivatives. ChemistrySelect 2023. [DOI: 10.1002/slct.202203856] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Muthalagu Vetrichelvan
- Department of Discovery Synthesis Biocon Bristol Myers Squibb R&D Centre Syngene International Ltd. Biocon Park, Plot No. 2 & 3, Jigani Link Road, Bommasandra IV Bangalore 560 099 India
| | - Ulaganathan Sankar
- Department of Discovery Synthesis Biocon Bristol Myers Squibb R&D Centre Syngene International Ltd. Biocon Park, Plot No. 2 & 3, Jigani Link Road, Bommasandra IV Bangalore 560 099 India
| | - Vijayabhaskar Bokkala
- Department of Discovery Synthesis Biocon Bristol Myers Squibb R&D Centre Syngene International Ltd. Biocon Park, Plot No. 2 & 3, Jigani Link Road, Bommasandra IV Bangalore 560 099 India
| | - Arun Akunuri
- Department of Discovery Synthesis Biocon Bristol Myers Squibb R&D Centre Syngene International Ltd. Biocon Park, Plot No. 2 & 3, Jigani Link Road, Bommasandra IV Bangalore 560 099 India
| | - Natesan Ramesh
- Department of Discovery Synthesis Biocon Bristol Myers Squibb R&D Centre Syngene International Ltd. Biocon Park, Plot No. 2 & 3, Jigani Link Road, Bommasandra IV Bangalore 560 099 India
| | - Manivel Pitchai
- Department of Discovery Synthesis Biocon Bristol Myers Squibb R&D Centre Syngene International Ltd. Biocon Park, Plot No. 2 & 3, Jigani Link Road, Bommasandra IV Bangalore 560 099 India
| | - Arvind Mathur
- Department of Discovery Synthesis Small Molecule Drug Discovery Bristol Myers Squibb Research and Early Development P.O. Box 5400 Princeton New Jersey 08543-4000 USA
| | - Anuradha Gupta
- Department of Discovery Synthesis Small Molecule Drug Discovery Bristol Myers Squibb Research and Early Development P.O. Box 5400 Princeton New Jersey 08543-4000 USA
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4
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Zhang FL, Li B, Houk KN, Wang YF. Application of the Spin-Center Shift in Organic Synthesis. JACS AU 2022; 2:1032-1042. [PMID: 35647602 PMCID: PMC9131482 DOI: 10.1021/jacsau.2c00051] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Revised: 03/24/2022] [Accepted: 03/25/2022] [Indexed: 05/09/2023]
Abstract
Spin-center shift (SCS) is a radical process involving 1,2-radical translocation along with a two-electron ionic movement, such as elimination of an adjacent leaving group. Such a process was initially observed in some important biochemical transformations, and the unique property has also attracted considerable interest in synthetic chemistry. Experimental, kinetic, as well as computational studies have been performed, and a series of useful radical transformations have been developed and applied in organic synthesis based on SCS processes in the last 20 years. This Perspective is an overview of radical transformations involving the SCS mechanism.
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Affiliation(s)
- Feng-Lian Zhang
- Department
of Chemistry, University of Science and
Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, China
| | - Bin Li
- Department
of Chemistry, University of Science and
Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, China
| | - K. N. Houk
- Department
of Chemistry and Biochemistry, University
of California, Los Angeles, California 90095, United States
| | - Yi-Feng Wang
- Department
of Chemistry, University of Science and
Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, China
- State
Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, China
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5
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Mechanistic insights into photochemical nickel-catalyzed cross-couplings enabled by energy transfer. Nat Commun 2022; 13:2737. [PMID: 35585041 PMCID: PMC9117274 DOI: 10.1038/s41467-022-30278-8] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Accepted: 04/19/2022] [Indexed: 12/26/2022] Open
Abstract
Various methods that use a photocatalyst for electron transfer between an organic substrate and a transition metal catalyst have been established. While triplet sensitization of organic substrates via energy transfer from photocatalysts has been demonstrated, the sensitization of transition metal catalysts is still in its infancy. Here, we describe the selective alkylation of C(sp3)-H bonds via triplet sensitization of nickel catalytic intermediates with a thorough elucidation of its reaction mechanism. Exergonic Dexter energy transfer from an iridium photosensitizer promotes the nickel catalyst to the triplet state, thus enabling C-H functionalization via the release of bromine radical. Computational studies and transient absorption experiments support that the reaction proceeds via the formation of triplet states of the organometallic nickel catalyst by energy transfer.
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6
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Alabugin IV, Kuhn L, Medvedev MG, Krivoshchapov NV, Vil' VA, Yaremenko IA, Mehaffy P, Yarie M, Terent'ev AO, Zolfigol MA. Stereoelectronic power of oxygen in control of chemical reactivity: the anomeric effect is not alone. Chem Soc Rev 2021; 50:10253-10345. [PMID: 34263287 DOI: 10.1039/d1cs00386k] [Citation(s) in RCA: 70] [Impact Index Per Article: 23.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Although carbon is the central element of organic chemistry, oxygen is the central element of stereoelectronic control in organic chemistry. Generally, a molecule with a C-O bond has both a strong donor (a lone pair) and a strong acceptor (e.g., a σ*C-O orbital), a combination that provides opportunities to influence chemical transformations at both ends of the electron demand spectrum. Oxygen is a stereoelectronic chameleon that adapts to the varying situations in radical, cationic, anionic, and metal-mediated transformations. Arguably, the most historically important stereoelectronic effect is the anomeric effect (AE), i.e., the axial preference of acceptor groups at the anomeric position of sugars. Although AE is generally attributed to hyperconjugative interactions of σ-acceptors with a lone pair at oxygen (negative hyperconjugation), recent literature reports suggested alternative explanations. In this context, it is timely to evaluate the fundamental connections between the AE and a broad variety of O-functional groups. Such connections illustrate the general role of hyperconjugation with oxygen lone pairs in reactivity. Lessons from the AE can be used as the conceptual framework for organizing disjointed observations into a logical body of knowledge. In contrast, neglect of hyperconjugation can be deeply misleading as it removes the stereoelectronic cornerstone on which, as we show in this review, the chemistry of organic oxygen functionalities is largely based. As negative hyperconjugation releases the "underutilized" stereoelectronic power of unshared electrons (the lone pairs) for the stabilization of a developing positive charge, the role of orbital interactions increases when the electronic demand is high and molecules distort from their equilibrium geometries. From this perspective, hyperconjugative anomeric interactions play a unique role in guiding reaction design. In this manuscript, we discuss the reactivity of organic O-functionalities, outline variations in the possible hyperconjugative patterns, and showcase the vast implications of AE for the structure and reactivity. On our journey through a variety of O-containing organic functional groups, from textbook to exotic, we will illustrate how this knowledge can predict chemical reactivity and unlock new useful synthetic transformations.
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Affiliation(s)
- Igor V Alabugin
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, FL 32306, USA.
| | - Leah Kuhn
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, FL 32306, USA.
| | - Michael G Medvedev
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky prosp., 119991 Moscow, Russian Federation.,A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilova St., 119991 Moscow, Russian Federation
| | - Nikolai V Krivoshchapov
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky prosp., 119991 Moscow, Russian Federation.,Lomonosov Moscow State University, Leninskie Gory 1 (3), Moscow, 119991, Russian Federation
| | - Vera A Vil'
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky prosp., 119991 Moscow, Russian Federation
| | - Ivan A Yaremenko
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky prosp., 119991 Moscow, Russian Federation
| | - Patricia Mehaffy
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, FL 32306, USA.
| | - Meysam Yarie
- Department of Organic Chemistry, Faculty of Chemistry, Bu-Ali Sina University, Hamedan 65167, Iran
| | - Alexander O Terent'ev
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky prosp., 119991 Moscow, Russian Federation
| | - Mohammad Ali Zolfigol
- Department of Organic Chemistry, Faculty of Chemistry, Bu-Ali Sina University, Hamedan 65167, Iran
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7
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Catalyst-free, radical-mediated intermolecular 1,2-arylheteroarylation of alkenes by cleaving inert C-C bond. Sci China Chem 2021. [DOI: 10.1007/s11426-021-1077-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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8
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Capaldo L, Ravelli D, Fagnoni M. Direct Photocatalyzed Hydrogen Atom Transfer (HAT) for Aliphatic C-H Bonds Elaboration. Chem Rev 2021; 122:1875-1924. [PMID: 34355884 PMCID: PMC8796199 DOI: 10.1021/acs.chemrev.1c00263] [Citation(s) in RCA: 354] [Impact Index Per Article: 118.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
![]()
Direct photocatalyzed
hydrogen atom transfer (d-HAT) can be considered
a method of choice for the elaboration of
aliphatic C–H bonds. In this manifold, a photocatalyst (PCHAT) exploits the energy of a photon to trigger the homolytic
cleavage of such bonds in organic compounds. Selective C–H
bond elaboration may be achieved by a judicious choice of the hydrogen
abstractor (key parameters are the electronic character and the molecular
structure), as well as reaction additives. Different are the classes
of PCsHAT available, including aromatic ketones, xanthene
dyes (Eosin Y), polyoxometalates, uranyl salts, a metal-oxo porphyrin
and a tris(amino)cyclopropenium radical dication. The processes (mainly
C–C bond formation) are in most cases carried out under mild
conditions with the help of visible light. The aim of this review
is to offer a comprehensive survey of the synthetic applications of
photocatalyzed d-HAT.
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Affiliation(s)
- Luca Capaldo
- Flow Chemistry Group, Van't Hoff Institute for Molecular Sciences (HIMS), University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands
| | - Davide Ravelli
- PhotoGreen Lab, Department of Chemistry, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy
| | - Maurizio Fagnoni
- PhotoGreen Lab, Department of Chemistry, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy
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9
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Singh B, Ahmed J, Biswas A, Paira R, Mandal SK. Reduced Phenalenyl in Catalytic Dehalogenative Deuteration and Hydrodehalogenation of Aryl Halides. J Org Chem 2021; 86:7242-7255. [PMID: 33949861 DOI: 10.1021/acs.joc.1c00573] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Dehalogenative deuteration reactions are generally performed through metal-mediated processes. This report demonstrates a mild protocol for hydrodehalogenation and dehalogenative deuteration of aryl/heteroaryl halides (39 examples) using a reduced odd alternant hydrocarbon phenalenyl under transition metal-free conditions and has been employed successfully for the incorporation of deuterium in various biologically active compounds. The combined approach of experimental and theoretical studies revealed a single electron transfer-based mechanism.
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Affiliation(s)
- Bhagat Singh
- Department of Chemical Sciences, Indian Institute of Science Education and Research, Kolkata, Mohanpur 741246, India
| | - Jasimuddin Ahmed
- Department of Chemical Sciences, Indian Institute of Science Education and Research, Kolkata, Mohanpur 741246, India
| | - Amit Biswas
- Department of Chemical Sciences, Indian Institute of Science Education and Research, Kolkata, Mohanpur 741246, India
| | - Rupankar Paira
- Department of Chemistry, Maharaja Manindra Chandra College, 20 Ramkanto Bose Street, Kolkata 700003, India
| | - Swadhin K Mandal
- Department of Chemical Sciences, Indian Institute of Science Education and Research, Kolkata, Mohanpur 741246, India
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10
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Gui J, Cai X, Chen L, Zhou Y, Zhu W, Jiang Y, Hu M, Chen X, Hu Y, Zhang S. Facile and practical hydrodehalogenations of organic halides enabled by calcium hydride and palladium chloride. Org Chem Front 2021. [DOI: 10.1039/d1qo00758k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
For the first time, calcium hydride and palladium chloride were used to reduce a wide range of organic halides including aromatic bromides, aromatic chlorides, aromatic triflates, aliphatic bromides, aliphatic chlorides and trihalomethyl compounds.
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Affiliation(s)
- Jingjing Gui
- Jiangsu Key Laboratory of Neuropsychiatric Diseases & College of Pharmaceutical Sciences, Soochow University, Suzhou, 215123, P.R. China
| | - Xin Cai
- Jiangsu Key Laboratory of Neuropsychiatric Diseases & College of Pharmaceutical Sciences, Soochow University, Suzhou, 215123, P.R. China
| | - Lingyun Chen
- Jiangsu Key Laboratory of Neuropsychiatric Diseases & College of Pharmaceutical Sciences, Soochow University, Suzhou, 215123, P.R. China
| | - Yuxin Zhou
- Jiangsu Key Laboratory of Neuropsychiatric Diseases & College of Pharmaceutical Sciences, Soochow University, Suzhou, 215123, P.R. China
| | - Wenjing Zhu
- Jiangsu Key Laboratory of Neuropsychiatric Diseases & College of Pharmaceutical Sciences, Soochow University, Suzhou, 215123, P.R. China
| | - Yuanrui Jiang
- Jiangsu Key Laboratory of Neuropsychiatric Diseases & College of Pharmaceutical Sciences, Soochow University, Suzhou, 215123, P.R. China
| | - Min Hu
- Jiangsu Key Laboratory of Neuropsychiatric Diseases & College of Pharmaceutical Sciences, Soochow University, Suzhou, 215123, P.R. China
| | - Xiaobei Chen
- State Key Laboratory of Bioreactor Engineering, and Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science & Technology, Shanghai, 200237, P.R. China
| | - Yanwei Hu
- Jiangsu Key Laboratory of Neuropsychiatric Diseases & College of Pharmaceutical Sciences, Soochow University, Suzhou, 215123, P.R. China
| | - Shilei Zhang
- Jiangsu Key Laboratory of Neuropsychiatric Diseases & College of Pharmaceutical Sciences, Soochow University, Suzhou, 215123, P.R. China
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11
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Zhang J, Yang JD, Cheng JP. Exploiting the radical reactivity of diazaphosphinanes in hydrodehalogenations and cascade cyclizations. Chem Sci 2020; 11:4786-4790. [PMID: 34122935 PMCID: PMC8159257 DOI: 10.1039/d0sc01352h] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Accepted: 04/22/2020] [Indexed: 12/19/2022] Open
Abstract
The remarkable reducibility of diazaphosphinanes has been extensively applied in various hydrogenations, based on and yet limited by their well-known hydridic reactivity. Here we exploited their unprecedented radical reactivity to implement hydrodehalogenations and cascade cyclizations originally inaccessible by hydride transfer. These reactions feature a broad substrate scope, high efficiency and simplicity of manipulation. Mechanistic studies suggested a radical chain process in which a phosphinyl radical is generated in a catalytic cycle via hydrogen-atom transfer from diazaphosphinanes. The radical reactivity of diazaphosphinanes disclosed here differs from their well-established hydridic reactivity, and hence, opens a new avenue for diazaphosphinane applications in organic syntheses.
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Affiliation(s)
- Jingjing Zhang
- Center of Basic Molecular Science, Department of Chemistry, Tsinghua University Beijing 100084 China
| | - Jin-Dong Yang
- Center of Basic Molecular Science, Department of Chemistry, Tsinghua University Beijing 100084 China
| | - Jin-Pei Cheng
- Center of Basic Molecular Science, Department of Chemistry, Tsinghua University Beijing 100084 China
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University Tianjin 300071 China
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12
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Ding TH, Qu JP, Kang YB. Visible-Light-Induced, Base-Promoted Transition-Metal-Free Dehalogenation of Aryl Fluorides, Chlorides, Bromides, and Iodides. Org Lett 2020; 22:3084-3088. [DOI: 10.1021/acs.orglett.0c00827] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ting-Hui Ding
- Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Jian-Ping Qu
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Yan-Biao Kang
- Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, China
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13
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Lübbesmeyer M, Mackay EG, Raycroft MAR, Elfert J, Pratt DA, Studer A. Base-Promoted C-C Bond Activation Enables Radical Allylation with Homoallylic Alcohols. J Am Chem Soc 2020; 142:2609-2616. [PMID: 31941267 PMCID: PMC7021447 DOI: 10.1021/jacs.9b12343] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
![]()
The
Cα–Cβ bond in homoallylic
alcohols can be activated under basic conditions, qualifying these
nonstrained acyclic systems as radical allylation reagents. This reactivity
is exemplified by photoinitiated (with visible light and/or blue LEDs)
allylation of perfluoroalkyl and alkyl radicals generated from perfluoroalkyl
iodides and alkylpyridinium salts, respectively, with homoallylic
alcohols. C-radical addition to the double bond of the title reagents
and subsequent base-promoted homolytic Cα–Cβ cleavage leads to the formation of the corresponding
allylated products along with ketyl radicals that act as single electron
reductants to sustain the chain reactions. Substrate scope is documented
and the role of base in the C–C bond activation is studied
by computation.
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Affiliation(s)
- Maximilian Lübbesmeyer
- Organisch-Chemisches Institut , Westfälische Wilhelms-Universität , Corrensstraße 40 , 48149 Münster , Germany
| | - Emily G Mackay
- Organisch-Chemisches Institut , Westfälische Wilhelms-Universität , Corrensstraße 40 , 48149 Münster , Germany
| | - Mark A R Raycroft
- Department of Chemistry and Biomolecular Sciences , University of Ottawa , Ottawa , Ontario K1N 6N5 , Canada
| | - Jonas Elfert
- Organisch-Chemisches Institut , Westfälische Wilhelms-Universität , Corrensstraße 40 , 48149 Münster , Germany
| | - Derek A Pratt
- Department of Chemistry and Biomolecular Sciences , University of Ottawa , Ottawa , Ontario K1N 6N5 , Canada
| | - Armido Studer
- Organisch-Chemisches Institut , Westfälische Wilhelms-Universität , Corrensstraße 40 , 48149 Münster , Germany
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14
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Shamir D, Elias I, Albo Y, Meyerstein D, Burg A. ORMOSIL-entrapped copper complex as electrocatalyst for the heterogeneous de-chlorination of alkyl halides. Inorganica Chim Acta 2020. [DOI: 10.1016/j.ica.2019.119225] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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15
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Liu M, Zhang Z, Song J, Liu S, Liu H, Han B. Nitrogen Dioxide Catalyzed Aerobic Oxidative Cleavage of C(OH)–C Bonds of Secondary Alcohols to Produce Acids. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201908788] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Mingyang Liu
- Beijing National Laboratory for Molecular SciencesKey Laboratory of Colloid and Interface and ThermodynamicsCAS Research/Education Center for Excellence in Molecular SciencesInstitute of ChemistryChinese Academy of Sciences Zhongguancun North First Street 2 100190 Beijing P. R. China
- University of Chinese Academy of Sciences Beijing 100049 P. R. China
- Physical Science LaboratoryHuairou National Comprehensive Science Center No. 5 Yanqi East Second Street Beijing 101400 China
| | - Zhanrong Zhang
- Beijing National Laboratory for Molecular SciencesKey Laboratory of Colloid and Interface and ThermodynamicsCAS Research/Education Center for Excellence in Molecular SciencesInstitute of ChemistryChinese Academy of Sciences Zhongguancun North First Street 2 100190 Beijing P. R. China
| | - Jinliang Song
- Beijing National Laboratory for Molecular SciencesKey Laboratory of Colloid and Interface and ThermodynamicsCAS Research/Education Center for Excellence in Molecular SciencesInstitute of ChemistryChinese Academy of Sciences Zhongguancun North First Street 2 100190 Beijing P. R. China
- Physical Science LaboratoryHuairou National Comprehensive Science Center No. 5 Yanqi East Second Street Beijing 101400 China
| | - Shuaishuai Liu
- Beijing National Laboratory for Molecular SciencesKey Laboratory of Colloid and Interface and ThermodynamicsCAS Research/Education Center for Excellence in Molecular SciencesInstitute of ChemistryChinese Academy of Sciences Zhongguancun North First Street 2 100190 Beijing P. R. China
- University of Chinese Academy of Sciences Beijing 100049 P. R. China
- Physical Science LaboratoryHuairou National Comprehensive Science Center No. 5 Yanqi East Second Street Beijing 101400 China
| | - Huizhen Liu
- Beijing National Laboratory for Molecular SciencesKey Laboratory of Colloid and Interface and ThermodynamicsCAS Research/Education Center for Excellence in Molecular SciencesInstitute of ChemistryChinese Academy of Sciences Zhongguancun North First Street 2 100190 Beijing P. R. China
- University of Chinese Academy of Sciences Beijing 100049 P. R. China
- Physical Science LaboratoryHuairou National Comprehensive Science Center No. 5 Yanqi East Second Street Beijing 101400 China
| | - Buxing Han
- Beijing National Laboratory for Molecular SciencesKey Laboratory of Colloid and Interface and ThermodynamicsCAS Research/Education Center for Excellence in Molecular SciencesInstitute of ChemistryChinese Academy of Sciences Zhongguancun North First Street 2 100190 Beijing P. R. China
- University of Chinese Academy of Sciences Beijing 100049 P. R. China
- Physical Science LaboratoryHuairou National Comprehensive Science Center No. 5 Yanqi East Second Street Beijing 101400 China
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16
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Liu M, Zhang Z, Song J, Liu S, Liu H, Han B. Nitrogen Dioxide Catalyzed Aerobic Oxidative Cleavage of C(OH)–C Bonds of Secondary Alcohols to Produce Acids. Angew Chem Int Ed Engl 2019; 58:17393-17398. [DOI: 10.1002/anie.201908788] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Revised: 09/05/2019] [Indexed: 02/05/2023]
Affiliation(s)
- Mingyang Liu
- Beijing National Laboratory for Molecular SciencesKey Laboratory of Colloid and Interface and ThermodynamicsCAS Research/Education Center for Excellence in Molecular SciencesInstitute of ChemistryChinese Academy of Sciences Zhongguancun North First Street 2 100190 Beijing P. R. China
- University of Chinese Academy of Sciences Beijing 100049 P. R. China
- Physical Science LaboratoryHuairou National Comprehensive Science Center No. 5 Yanqi East Second Street Beijing 101400 China
| | - Zhanrong Zhang
- Beijing National Laboratory for Molecular SciencesKey Laboratory of Colloid and Interface and ThermodynamicsCAS Research/Education Center for Excellence in Molecular SciencesInstitute of ChemistryChinese Academy of Sciences Zhongguancun North First Street 2 100190 Beijing P. R. China
| | - Jinliang Song
- Beijing National Laboratory for Molecular SciencesKey Laboratory of Colloid and Interface and ThermodynamicsCAS Research/Education Center for Excellence in Molecular SciencesInstitute of ChemistryChinese Academy of Sciences Zhongguancun North First Street 2 100190 Beijing P. R. China
- Physical Science LaboratoryHuairou National Comprehensive Science Center No. 5 Yanqi East Second Street Beijing 101400 China
| | - Shuaishuai Liu
- Beijing National Laboratory for Molecular SciencesKey Laboratory of Colloid and Interface and ThermodynamicsCAS Research/Education Center for Excellence in Molecular SciencesInstitute of ChemistryChinese Academy of Sciences Zhongguancun North First Street 2 100190 Beijing P. R. China
- University of Chinese Academy of Sciences Beijing 100049 P. R. China
- Physical Science LaboratoryHuairou National Comprehensive Science Center No. 5 Yanqi East Second Street Beijing 101400 China
| | - Huizhen Liu
- Beijing National Laboratory for Molecular SciencesKey Laboratory of Colloid and Interface and ThermodynamicsCAS Research/Education Center for Excellence in Molecular SciencesInstitute of ChemistryChinese Academy of Sciences Zhongguancun North First Street 2 100190 Beijing P. R. China
- University of Chinese Academy of Sciences Beijing 100049 P. R. China
- Physical Science LaboratoryHuairou National Comprehensive Science Center No. 5 Yanqi East Second Street Beijing 101400 China
| | - Buxing Han
- Beijing National Laboratory for Molecular SciencesKey Laboratory of Colloid and Interface and ThermodynamicsCAS Research/Education Center for Excellence in Molecular SciencesInstitute of ChemistryChinese Academy of Sciences Zhongguancun North First Street 2 100190 Beijing P. R. China
- University of Chinese Academy of Sciences Beijing 100049 P. R. China
- Physical Science LaboratoryHuairou National Comprehensive Science Center No. 5 Yanqi East Second Street Beijing 101400 China
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17
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Niu YJ, Sui GH, Zheng HX, Shan XH, Tie L, Fu JL, Qu JP, Kang YB. Competing Dehalogenation versus Borylation of Aryl Iodides and Bromides under Transition-Metal-Free Basic Conditions. J Org Chem 2019; 84:10805-10813. [DOI: 10.1021/acs.joc.9b01350] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Yi-Jie Niu
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing 211816, China
| | - Guo-Hui Sui
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing 211816, China
| | - Hong-Xing Zheng
- School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng, Shandong 252059, China
| | - Xiang-Huan Shan
- Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Lin Tie
- Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Jia-Le Fu
- Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Jian-Ping Qu
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing 211816, China
| | - Yan-Biao Kang
- Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, China
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18
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Yu F, Mao R, Yu M, Gu X, Wang Y. Generation of Aryl Radicals from Aryl Halides: Rongalite-Promoted Transition-Metal-Free Arylation. J Org Chem 2019; 84:9946-9956. [PMID: 31310121 DOI: 10.1021/acs.joc.9b01113] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A new and practical method for the generation of aryl radicals from aryl halides is reported. Rongalite as a novel precursor of super electron donors was used to initiate a series of electron-catalyzed reactions under mild conditions. These transition-metal-free radical chain reactions enable the efficient formation of C-C, C-S, and C-P bonds through homolytic aromatic substitution or SRN1 reactions. Moreover, the synthesis of antipsychotic drug Quetiapine was performed on gram scale through the described method. This protocol demonstrated its potential as a promising arylation method in organic synthesis.
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Affiliation(s)
- Fazhi Yu
- Department of Medicinal Chemistry, School of Pharmacy , Fudan University , 826 Zhangheng Road , Shanghai 201203 , China
| | - Runyu Mao
- Department of Medicinal Chemistry, School of Pharmacy , Fudan University , 826 Zhangheng Road , Shanghai 201203 , China
| | - Mingcheng Yu
- Department of Medicinal Chemistry, School of Pharmacy , Fudan University , 826 Zhangheng Road , Shanghai 201203 , China
| | - Xianfeng Gu
- Department of Medicinal Chemistry, School of Pharmacy , Fudan University , 826 Zhangheng Road , Shanghai 201203 , China
| | - Yonghui Wang
- Department of Medicinal Chemistry, School of Pharmacy , Fudan University , 826 Zhangheng Road , Shanghai 201203 , China
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19
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Ke J, Wang H, Zhou L, Mou C, Zhang J, Pan L, Chi YR. Hydrodehalogenation of Aryl Halides through Direct Electrolysis. Chemistry 2019; 25:6911-6914. [PMID: 30950097 DOI: 10.1002/chem.201901082] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Indexed: 01/27/2023]
Abstract
A catalyst- and metal-free electrochemical hydrodehalogenation of aryl halides is disclosed. Our reaction by a flexible protocol is operated in an undivided cell equipped with an inexpensive graphite rod anode and cathode. Trialkylamines nBu3 N/Et3 N behave as effective reductants and hydrogen atom donors for this electrochemical reductive reaction. Various aryl and heteroaryl bromides worked effectively. The typically less reactive aryl chlorides and fluorides can also be smoothly converted. The utility of our method is demonstrated by detoxification of harmful pesticides and hydrodebromination of a dibrominated biphenyl (analogues of flame-retardants) in gram scale.
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Affiliation(s)
- Jie Ke
- Division of Chemistry & Biological Chemistry, School of Physical & Mathematical Sciences, Nanyang Technological University, Singapore, 637371, Singapore
| | - Hongling Wang
- Division of Chemistry & Biological Chemistry, School of Physical & Mathematical Sciences, Nanyang Technological University, Singapore, 637371, Singapore
| | - Liejin Zhou
- Division of Chemistry & Biological Chemistry, School of Physical & Mathematical Sciences, Nanyang Technological University, Singapore, 637371, Singapore
| | - Chengli Mou
- Guiyang College of Traditional Chinese Medicine, Guizhou, P.R. China
| | - Jingjie Zhang
- Guiyang College of Traditional Chinese Medicine, Guizhou, P.R. China
| | - Lutai Pan
- Guiyang College of Traditional Chinese Medicine, Guizhou, P.R. China
| | - Yonggui Robin Chi
- Division of Chemistry & Biological Chemistry, School of Physical & Mathematical Sciences, Nanyang Technological University, Singapore, 637371, Singapore
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20
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Buckel W. Enzymatic Reactions Involving Ketyls: From a Chemical Curiosity to a General Biochemical Mechanism. Biochemistry 2019; 58:5221-5233. [PMID: 30995029 DOI: 10.1021/acs.biochem.9b00171] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Ketyls are radical anions with nucleophilic properties. Ketyls obtained by enzymatic one-electron reduction of thioesters were proposed as intermediates for the dehydration of (R)-2-hydroxyacyl-CoA to (E)-2-enoyl-CoA. This concept was extended to the Birch-like reduction of benzoyl-CoA to 1,5-cyclohexadienecarboxyl-CoA. Nature uses two methods to achieve the therefore required low reduction potentials of less than -600 mV, either by an ATP-driven electron transfer similar to that catalyzed by the iron protein of nitrogenase or by electron bifurcation. Ketyls formed by thiyl radical-initiated oxidation of alcohols followed by deprotonation are involved in coenzyme B12-independent diol dehydratases, other glycyl radical enzymes mediating key reactions in the degradations of choline, taurine, and 4-hydroxyproline, and all three classes of ribonucleotide reductases. A special case is the dehydration of 4-hydroxybutyryl-CoA to crotonyl-CoA, which most likely proceeds via an oxidation to an allylic ketyl but requires neither a strong reductant nor an external radical generator.
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Affiliation(s)
- Wolfgang Buckel
- Fachbereich Biologie , Philipps-Universität , 35032 Marburg , Germany
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21
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Syroeshkin MA, Kuriakose F, Saverina EA, Timofeeva VA, Egorov MP, Alabugin IV. Hochkonversion von Reduktionsmitteln. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201807247] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Mikhail A. Syroeshkin
- N. D. Zelinsky Institute of Organic Chemistry Leninskyprosp. 47 119991 Moskau Russland
| | - Febin Kuriakose
- Department of Chemistry and Biochemistry Florida State University Tallahassee FL USA
| | - Evgeniya A. Saverina
- N. D. Zelinsky Institute of Organic Chemistry Leninskyprosp. 47 119991 Moskau Russland
- UMR CNRS 6226 ISCR University of Rennes 1 Rennes Frankreich
| | | | - Mikhail P. Egorov
- N. D. Zelinsky Institute of Organic Chemistry Leninskyprosp. 47 119991 Moskau Russland
| | - Igor V. Alabugin
- Department of Chemistry and Biochemistry Florida State University Tallahassee FL USA
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22
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Syroeshkin MA, Kuriakose F, Saverina EA, Timofeeva VA, Egorov MP, Alabugin IV. Upconversion of Reductants. Angew Chem Int Ed Engl 2019; 58:5532-5550. [DOI: 10.1002/anie.201807247] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2018] [Indexed: 11/08/2022]
Affiliation(s)
- Mikhail A. Syroeshkin
- N. D. Zelinsky Institute of Organic Chemistry Leninsky prosp. 47 119991 Moscow Russia
| | - Febin Kuriakose
- Department of Chemistry and Biochemistry Florida State University Tallahassee FL USA
| | - Evgeniya A. Saverina
- N. D. Zelinsky Institute of Organic Chemistry Leninsky prosp. 47 119991 Moscow Russia
- UMR CNRS 6226 ISCR University of Rennes 1 Rennes France
| | | | - Mikhail P. Egorov
- N. D. Zelinsky Institute of Organic Chemistry Leninsky prosp. 47 119991 Moscow Russia
| | - Igor V. Alabugin
- Department of Chemistry and Biochemistry Florida State University Tallahassee FL USA
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23
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Yang T, Xia WJ, Shang JQ, Li Y, Wang XX, Sun M, Li YM. Metal-Free Radical [2 + 2 + 1] Cyclization of ortho-Cyanoarylacrylamides with Alkyl Nitriles: Synthesis of Pyrrolo[3,2- c]quinolines. Org Lett 2019; 21:444-447. [PMID: 30588816 DOI: 10.1021/acs.orglett.8b03638] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
A novel radical [2 + 2 + 1] cyclization of ortho-cyanoarylacrylamides with dual α-C-H bonds in alkyl nitriles has been developed. The reaction provides new facile and straightforward access to cyano-substituted pyrrolo[3,2- c]quinolines, which are important nitrogen-containing polyheterocycles. A possible mechanism for the transformation is proposed.
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Affiliation(s)
- Tao Yang
- Faculty of Life Science and Technology , Kunming University of Science and Technology , Kunming 650500 , China
| | - Wen-Jin Xia
- Faculty of Life Science and Technology , Kunming University of Science and Technology , Kunming 650500 , China
| | - Jia-Qi Shang
- Faculty of Life Science and Technology , Kunming University of Science and Technology , Kunming 650500 , China
| | - Yi Li
- Faculty of Life Science and Technology , Kunming University of Science and Technology , Kunming 650500 , China
| | - Xiang-Xiang Wang
- Faculty of Life Science and Technology , Kunming University of Science and Technology , Kunming 650500 , China
| | - Meng Sun
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, Department of Chemistry & Materials Science , Northwest University , Xi'an 710127 , China
| | - Ya-Min Li
- Faculty of Life Science and Technology , Kunming University of Science and Technology , Kunming 650500 , China
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24
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Zheng D, Studer A. Photoinitiated Three-Component α-Perfluoroalkyl-β-heteroarylation of Unactivated Alkenes via Electron Catalysis. Org Lett 2019; 21:325-329. [PMID: 30576162 PMCID: PMC6326532 DOI: 10.1021/acs.orglett.8b03849] [Citation(s) in RCA: 104] [Impact Index Per Article: 20.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2018] [Indexed: 01/01/2023]
Abstract
A visible-light-initiated α-perfluoroalkyl-β-heteroarylation of various alkenes with perfluoroalkyl iodides and quinoxalin-2(1 H)-ones is presented. This three-component radical cascade reaction allows an efficient synthesis of a range of perfluoroalkyl containing quinoxalin-2(1 H)-one derivatives in moderate to excellent yields under mild conditions. Reactions proceed via acidic aminyl radicals that are readily deprotonated to give the corresponding radical anions able to sustain the radical chain as single electron transfer reducing reagents. Hence, the overall cascade classifies as an electron-catalyzed process.
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Affiliation(s)
- Danqing Zheng
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität, Corrensstraβe 40, 48149 Münster, Germany
| | - Armido Studer
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität, Corrensstraβe 40, 48149 Münster, Germany
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25
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Cao D, Yan C, Zhou P, Zeng H, Li CJ. Hydrogen bonding promoted simple and clean photo-induced reduction of C–X bond with isopropanol. Chem Commun (Camb) 2019; 55:767-770. [DOI: 10.1039/c8cc08942f] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We herein report a simple and clean photo-induced metal-free reduction of C–X bond under an atmosphere of air at room temperature.
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Affiliation(s)
- Dawei Cao
- The State Key Laboratory of Applied Organic Chemistry
- Lanzhou University
- Lanzhou
- P. R. China
- College of Chemistry and Chemical Engineering
| | - Chaoxian Yan
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou
- P. R. China
| | - Panpan Zhou
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou
- P. R. China
| | - Huiying Zeng
- The State Key Laboratory of Applied Organic Chemistry
- Lanzhou University
- Lanzhou
- P. R. China
- College of Chemistry and Chemical Engineering
| | - Chao-Jun Li
- The State Key Laboratory of Applied Organic Chemistry
- Lanzhou University
- Lanzhou
- P. R. China
- Department of Chemistry and FQRNT Centre for Green Chemistry and Catalysis
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26
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Zhou ZZ, Zhao JH, Gou XY, Chen XM, Liang YM. Visible-light-mediated hydrodehalogenation and Br/D exchange of inactivated aryl and alkyl halides with a palladium complex. Org Chem Front 2019. [DOI: 10.1039/c9qo00240e] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Photo-induced radical reductive dehalogenation of inactivated aryl/alkyl bromides and chlorides with a palladium complex is described. Reductive cyclization, dehalogenative deuteration, and radical addition process can be achieved smoothly.
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Affiliation(s)
- Zhao-Zhao Zhou
- School of Nuclear Science and Technology, Lanzhou University
- Lanzhou, 730000
- P.R. China
- State Key Laboratory of Applied Organic Chemistry
- Lanzhou University
| | - Jia-Hui Zhao
- State Key Laboratory of Applied Organic Chemistry
- Lanzhou University
- Lanzhou, 730000
- P.R. China
| | - Xue-Ya Gou
- State Key Laboratory of Applied Organic Chemistry
- Lanzhou University
- Lanzhou, 730000
- P.R. China
| | - Xi-Meng Chen
- School of Nuclear Science and Technology, Lanzhou University
- Lanzhou, 730000
- P.R. China
| | - Yong-Min Liang
- State Key Laboratory of Applied Organic Chemistry
- Lanzhou University
- Lanzhou, 730000
- P.R. China
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27
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Bietti M. Anwendung von Mediumeffekten in Aktivierungs‐ und Deaktivierungsstrategien zur selektiven Funktionalisierung aliphatischer C‐H‐Bindungen. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201804929] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Massimo Bietti
- Dipartimento di Scienze e Tecnologie ChimicheUniversità “Tor Vergata” Via della Ricerca Scientifica, 1 I-00133 Rome Italien
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28
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Cao X, Cai BG, Xu GY, Xuan J. Radical Addition/Cyclization Reaction of 2-Vinylanilines with Alkynes: Synthesis of Naphthalenes via Electron Catalysis. Chem Asian J 2018; 13:3855-3858. [DOI: 10.1002/asia.201801496] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2018] [Revised: 11/05/2018] [Indexed: 12/29/2022]
Affiliation(s)
- Xia Cao
- Department of Chemistry and Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials; Anhui University; Hefei Anhui 230601 China
| | - Bao-Gui Cai
- Department of Chemistry and Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials; Anhui University; Hefei Anhui 230601 China
| | - Guo-Yong Xu
- Institute of Physical Science and Information Technology; Anhui University; Hefei Anhui 230601 China
| | - Jun Xuan
- Department of Chemistry and Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials; Anhui University; Hefei Anhui 230601 China
- Institute of Physical Science and Information Technology; Anhui University; Hefei Anhui 230601 China
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29
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Bietti M. Activation and Deactivation Strategies Promoted by Medium Effects for Selective Aliphatic C-H Bond Functionalization. Angew Chem Int Ed Engl 2018; 57:16618-16637. [PMID: 29873935 DOI: 10.1002/anie.201804929] [Citation(s) in RCA: 60] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2018] [Revised: 05/31/2018] [Indexed: 12/17/2022]
Abstract
Selective functionalization of unactivated aliphatic C-H bonds represents an important goal of modern synthetic chemistry. Differentiating between such bonds in organic molecules with high levels of selectivity remains a crucial issue, and a profound understanding of even the subtlest reactivity trends is needed. Among the methods that have been developed, those based on hydrogen atom transfer (HAT) have attracted considerable interest. Within this framework, medium effects have proved effective in altering the reactivity and site selectivity in synthetically useful C-H functionalization procedures. In this Review, the mechanistic features behind the available strategies are discussed. It is shown that hydrogen bonding and acid-base interactions can promote C-H bond activation or deactivation toward HAT reagents, thereby providing fine-control over the site selectivity and product chemoselectivity as well as useful guidelines for future development and applications.
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Affiliation(s)
- Massimo Bietti
- Dipartimento di Scienze e Tecnologie Chimiche, Università "Tor Vergata", Via della Ricerca Scientifica, 1, I-00133, Rome, Italy
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30
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Yang W, Chen C, Chan KS. Hydrodebromination of allylic and benzylic bromides with water catalyzed by a rhodium porphyrin complex. Dalton Trans 2018; 47:12879-12883. [PMID: 30168570 DOI: 10.1039/c8dt02168f] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Hydrodebromination of allylic and benzylic bromides was successfully achieved by a rhodium porphyrin complex catalyst using water as the hydrogen source without a sacrificial reductant. Mechanistic investigations suggest that bromine atom abstraction via a rhodium porphyrin metalloradical operates to give the rhodium porphyrin alkyl species and the subsequent hydrolysis of the rhodium porphyrin alkyl species to a hydrocarbon product is a key step to harness the hydrogen from water.
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Affiliation(s)
- Wu Yang
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR, People's Republic of China.
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31
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Jouha J, Khouili M, Hiebel MA, Guillaumet G, Suzenet F. Room temperature dehalogenation of (hetero)aryl halides with magnesium/methanol. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.07.008] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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32
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Emery KJ, Young A, Arokianathar JN, Tuttle T, Murphy JA. KO tBu as a Single Electron Donor? Revisiting the Halogenation of Alkanes with CBr₄ and CCl₄. Molecules 2018; 23:molecules23051055. [PMID: 29724009 PMCID: PMC6102552 DOI: 10.3390/molecules23051055] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2018] [Revised: 04/24/2018] [Accepted: 04/26/2018] [Indexed: 11/29/2022] Open
Abstract
The search for reactions where KOtBu and other tert-alkoxides might behave as single electron donors led us to explore their reactions with tetrahalomethanes, CX4, in the presence of adamantane. We recently reported the halogenation of adamantane under these conditions. These reactions appeared to mirror the analogous known reaction of NaOH with CBr4 under phase-transfer conditions, where initiation features single electron transfer from a hydroxide ion to CBr4. We now report evidence from experimental and computational studies that KOtBu and other alkoxide reagents do not go through an analogous electron transfer. Rather, the alkoxides form hypohalites upon reacting with CBr4 or CCl4, and homolytic decomposition of appropriate hypohalites initiates the halogenation of adamantane.
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Affiliation(s)
- Katie J Emery
- Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow G1 1XL, UK.
| | - Allan Young
- Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow G1 1XL, UK.
| | - J Norman Arokianathar
- Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow G1 1XL, UK.
| | - Tell Tuttle
- Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow G1 1XL, UK.
| | - John A Murphy
- Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow G1 1XL, UK.
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33
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Zhang H, Wu X, Zhao Q, Zhu C. Copper-Catalyzed Heteroarylsilylation of Unactivated Olefins through Distal Heteroaryl Migration. Chem Asian J 2018; 13:2453-2457. [DOI: 10.1002/asia.201800150] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2018] [Revised: 02/09/2018] [Indexed: 11/06/2022]
Affiliation(s)
- Hong 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
| | - Qian Zhao
- Jiangsu Key Laboratory of Chiral Drug Development; Jiangsu Aosaikang Pharmaceutical CO., LTD.; Nanjing Jiangsu 211112 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
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34
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Huang YQ, Song HJ, Liu YX, Wang QM. Dehydrogenation of N-Heterocycles by Superoxide Ion Generated through Single-Electron Transfer. Chemistry 2018; 24:2065-2069. [DOI: 10.1002/chem.201705202] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2017] [Indexed: 02/03/2023]
Affiliation(s)
- Yuan-Qiong Huang
- State Key Laboratory of Elemento-Organic Chemistry; Research Institute of Elemento-Organic Chemistry, College of Chemistry; Collaborative Innovation Center of Chemical Science and Engineering (Tianjin); Nankai University; Tianjin 300071 P. R. China
| | - Hong-Jian Song
- State Key Laboratory of Elemento-Organic Chemistry; Research Institute of Elemento-Organic Chemistry, College of Chemistry; Collaborative Innovation Center of Chemical Science and Engineering (Tianjin); Nankai University; Tianjin 300071 P. R. China
| | - Yu-Xiu Liu
- State Key Laboratory of Elemento-Organic Chemistry; Research Institute of Elemento-Organic Chemistry, College of Chemistry; Collaborative Innovation Center of Chemical Science and Engineering (Tianjin); Nankai University; Tianjin 300071 P. R. China
| | - Qing-Min Wang
- State Key Laboratory of Elemento-Organic Chemistry; Research Institute of Elemento-Organic Chemistry, College of Chemistry; Collaborative Innovation Center of Chemical Science and Engineering (Tianjin); Nankai University; Tianjin 300071 P. R. China
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35
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Tang X, Studer A. Alkene 1,2-Difunctionalization by Radical Alkenyl Migration. Angew Chem Int Ed Engl 2018; 57:814-817. [PMID: 29165859 PMCID: PMC5838557 DOI: 10.1002/anie.201710397] [Citation(s) in RCA: 146] [Impact Index Per Article: 24.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2017] [Revised: 11/13/2017] [Indexed: 12/17/2022]
Abstract
Transition-metal-free radical α-perfluoroalkylation with the accompanying vicinal β-alkenylation of unactivated alkenes is presented. These radical cascades proceed by means of 1,4- or 1,5-alkenyl migration by electron catalysis on readily accessed allylic alcohols. The reactions comprise a regioselective perfluoroalkyl radical addition with subsequent alkenyl migration and concomitant deprotonation to generate a ketyl radical anion that sustains the chain as a single-electron-transfer reducing reagent.
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Affiliation(s)
- Xinjun Tang
- Westfälische Wilhelms-UniversitätOrganisch-Chemisches InstitutCorrensstraße 4048149MünsterGermany
| | - Armido Studer
- Westfälische Wilhelms-UniversitätOrganisch-Chemisches InstitutCorrensstraße 4048149MünsterGermany
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36
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Pipitone LM, Carboni G, Sorrentino D, Galeotti M, Salamone M, Bietti M. Enhancing Reactivity and Site-Selectivity in Hydrogen Atom Transfer from Amino Acid C–H Bonds via Deprotonation. Org Lett 2018; 20:808-811. [DOI: 10.1021/acs.orglett.7b03948] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Luca Maria Pipitone
- Dipartimento di Scienze e
Tecnologie Chimiche, Università “Tor Vergata”, Via della Ricerca Scientifica, 1 I-00133 Rome, Italy
| | - Giulia Carboni
- Dipartimento di Scienze e
Tecnologie Chimiche, Università “Tor Vergata”, Via della Ricerca Scientifica, 1 I-00133 Rome, Italy
| | - Daniela Sorrentino
- Dipartimento di Scienze e
Tecnologie Chimiche, Università “Tor Vergata”, Via della Ricerca Scientifica, 1 I-00133 Rome, Italy
| | - Marco Galeotti
- Dipartimento di Scienze e
Tecnologie Chimiche, Università “Tor Vergata”, Via della Ricerca Scientifica, 1 I-00133 Rome, Italy
| | - Michela Salamone
- Dipartimento di Scienze e
Tecnologie Chimiche, Università “Tor Vergata”, Via della Ricerca Scientifica, 1 I-00133 Rome, Italy
| | - Massimo Bietti
- Dipartimento di Scienze e
Tecnologie Chimiche, Università “Tor Vergata”, Via della Ricerca Scientifica, 1 I-00133 Rome, Italy
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37
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Lübbesmeyer M, Leifert D, Schäfer H, Studer A. Electrochemical initiation of electron-catalyzed phenanthridine synthesis by trifluoromethylation of isonitriles. Chem Commun (Camb) 2018; 54:2240-2243. [DOI: 10.1039/c7cc09302k] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Electrochemical initiation of the trifluoromethylation of biaryl isonitriles verifies the electron's catalytic character in the examined cascade reaction.
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Affiliation(s)
- M. Lübbesmeyer
- Westfälische Wilhelms-Universität Münster
- 48149 Münster
- Germany
| | - D. Leifert
- Westfälische Wilhelms-Universität Münster
- 48149 Münster
- Germany
| | - H. Schäfer
- Westfälische Wilhelms-Universität Münster
- 48149 Münster
- Germany
| | - A. Studer
- Westfälische Wilhelms-Universität Münster
- 48149 Münster
- Germany
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38
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Affiliation(s)
- Xinjun Tang
- Westfälische Wilhelms-UniversitätOrganisch-Chemisches Institut Corrensstraße 40 48149 Münster Germany
| | - Armido Studer
- Westfälische Wilhelms-UniversitätOrganisch-Chemisches Institut Corrensstraße 40 48149 Münster Germany
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39
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Huang W, Xu N. Synthesis of pinacol acetals catalyzed by (2-carboxyphenyl)diphenylphosphonium bromide. SYNTHETIC COMMUN 2017. [DOI: 10.1080/00397911.2017.1368082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Wenhua Huang
- Department of Chemistry, Tianjin University, Tianjin, P. R. China
| | - Ning Xu
- Department of Chemistry, Tianjin University, Tianjin, P. R. China
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40
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Evoniuk CJ, Gomes GDP, Hill SP, Fujita S, Hanson K, Alabugin IV. Coupling N–H Deprotonation, C–H Activation, and Oxidation: Metal-Free C(sp3)–H Aminations with Unprotected Anilines. J Am Chem Soc 2017; 139:16210-16221. [DOI: 10.1021/jacs.7b07519] [Citation(s) in RCA: 61] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
| | | | - Sean P. Hill
- Florida State University, Tallahassee, Florida 32306, United States
| | - Satoshi Fujita
- Interdisciplinary
Graduate School of Engineering Sciences, Kyushu University, Fukuoka, Fukuoka Prefecture 819-0395, Japan
| | - Kenneth Hanson
- Florida State University, Tallahassee, Florida 32306, United States
| | - Igor V. Alabugin
- Florida State University, Tallahassee, Florida 32306, United States
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41
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Haibach MC, Stoltz BM, Grubbs RH. Catalytic Reduction of Alkyl and Aryl Bromides Using Propan-2-ol. Angew Chem Int Ed Engl 2017; 56:15123-15126. [DOI: 10.1002/anie.201708800] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2017] [Indexed: 11/09/2022]
Affiliation(s)
- Michael C. Haibach
- Division of Chemistry and Chemical Engineering; California Institute of Technology; Pasadena CA 91125 USA
| | - Brian M. Stoltz
- Division of Chemistry and Chemical Engineering; California Institute of Technology; Pasadena CA 91125 USA
| | - Robert H. Grubbs
- Division of Chemistry and Chemical Engineering; California Institute of Technology; Pasadena CA 91125 USA
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42
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Haibach MC, Stoltz BM, Grubbs RH. Catalytic Reduction of Alkyl and Aryl Bromides Using Propan-2-ol. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201708800] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Michael C. Haibach
- Division of Chemistry and Chemical Engineering; California Institute of Technology; Pasadena CA 91125 USA
| | - Brian M. Stoltz
- Division of Chemistry and Chemical Engineering; California Institute of Technology; Pasadena CA 91125 USA
| | - Robert H. Grubbs
- Division of Chemistry and Chemical Engineering; California Institute of Technology; Pasadena CA 91125 USA
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43
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Hokamp T, Dewanji A, Lübbesmeyer M, Mück‐Lichtenfeld C, Würthwein E, Studer A. Radical Hydrodehalogenation of Aryl Bromides and Chlorides with Sodium Hydride and 1,4-Dioxane. Angew Chem Int Ed Engl 2017; 56:13275-13278. [PMID: 28841248 PMCID: PMC5698765 DOI: 10.1002/anie.201706534] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2017] [Indexed: 11/24/2022]
Abstract
A practical method for radical chain reduction of various aryl bromides and chlorides is introduced. The thermal process uses NaH and 1,4-dioxane as reagents and 1,10-phenanthroline as an initiator. Hydrodehalogenation can be combined with typical cyclization reactions, proving the nature of the radical mechanism. These chain reactions proceed by electron catalysis. DFT calculations and mechanistic studies support the suggested mechanism.
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Affiliation(s)
- Tobias Hokamp
- Organisch-Chemisches InstitutWestfälische Wilhelms-UniversitätCorrensstraße 4048149MünsterGermany
| | - Abhishek Dewanji
- Organisch-Chemisches InstitutWestfälische Wilhelms-UniversitätCorrensstraße 4048149MünsterGermany
| | - Maximilian Lübbesmeyer
- Organisch-Chemisches InstitutWestfälische Wilhelms-UniversitätCorrensstraße 4048149MünsterGermany
| | | | - Ernst‐Ulrich Würthwein
- Organisch-Chemisches InstitutWestfälische Wilhelms-UniversitätCorrensstraße 4048149MünsterGermany
| | - Armido Studer
- Organisch-Chemisches InstitutWestfälische Wilhelms-UniversitätCorrensstraße 4048149MünsterGermany
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44
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Zheng HX, Shan XH, Qu JP, Kang YB. Transition-Metal-Free Hydrogenation of Aryl Halides: From Alcohol to Aldehyde. Org Lett 2017; 19:5114-5117. [DOI: 10.1021/acs.orglett.7b02399] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Hong-Xing Zheng
- Department
of Chemistry, University of Science and Technology of China, Hefei 230026, China
| | - Xiang-Huan Shan
- Department
of Chemistry, University of Science and Technology of China, Hefei 230026, China
| | - Jian-Ping Qu
- Institute
of Advanced Synthesis, School of Chemistry and Molecular Engineering,
Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing 211816, China
| | - Yan-Biao Kang
- Department
of Chemistry, University of Science and Technology of China, Hefei 230026, China
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45
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Hokamp T, Dewanji A, Lübbesmeyer M, Mück-Lichtenfeld C, Würthwein EU, Studer A. Radikalische Hydrodehalogenierung von Arylbromiden und -chloriden mit Natriumhydrid und 1,4-Dioxan. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201706534] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Tobias Hokamp
- Organisch-Chemisches Institut; Westfälische Wilhelms-Universität; Corrensstraße 40 48149 Münster Deutschland
| | - Abhishek Dewanji
- Organisch-Chemisches Institut; Westfälische Wilhelms-Universität; Corrensstraße 40 48149 Münster Deutschland
| | - Maximilian Lübbesmeyer
- Organisch-Chemisches Institut; Westfälische Wilhelms-Universität; Corrensstraße 40 48149 Münster Deutschland
| | - Christian Mück-Lichtenfeld
- Organisch-Chemisches Institut; Westfälische Wilhelms-Universität; Corrensstraße 40 48149 Münster Deutschland
| | - Ernst-Ulrich Würthwein
- Organisch-Chemisches Institut; Westfälische Wilhelms-Universität; Corrensstraße 40 48149 Münster Deutschland
| | - Armido Studer
- Organisch-Chemisches Institut; Westfälische Wilhelms-Universität; Corrensstraße 40 48149 Münster Deutschland
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46
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Tang X, Studer A. α-Perfluoroalkyl-β-alkynylation of alkenes via radical alkynyl migration. Chem Sci 2017; 8:6888-6892. [PMID: 29147514 PMCID: PMC5637125 DOI: 10.1039/c7sc02175e] [Citation(s) in RCA: 110] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2017] [Accepted: 08/02/2017] [Indexed: 12/15/2022] Open
Abstract
Transition metal-free radical α-perfluoroalkylation with concomitant β-alkynylation of unactivated alkenes is presented.
Transition metal-free radical α-perfluoroalkylation with concomitant β-alkynylation of unactivated alkenes is presented. These cascades proceed via electron-catalysis and comprise a radical 1,4- or 1,5-alkynyl migration from tertiary propargylic alcoholates to secondary or tertiary C-radicals as the key step. Alkynyl migration leads to a ketyl radical anion that sustains the chain as a single electron transfer reducing reagent.
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Affiliation(s)
- Xinjun Tang
- Organisch-Chemisches Institut , Westfälische Wilhelms-Universität , Corrensstraβe 40 , 48149 Münster , Germany .
| | - Armido Studer
- Organisch-Chemisches Institut , Westfälische Wilhelms-Universität , Corrensstraβe 40 , 48149 Münster , Germany .
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47
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Sahoo B, Surkus AE, Pohl MM, Radnik J, Schneider M, Bachmann S, Scalone M, Junge K, Beller M. A Biomass-Derived Non-Noble Cobalt Catalyst for Selective Hydrodehalogenation of Alkyl and (Hetero)Aryl Halides. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201702478] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Basudev Sahoo
- Leibniz-Institut für Katalyse e.V. an der; Universität Rostock; Albert-Einstein-Straße 29a 18059 Rostock Germany
| | - Annette-Enrica Surkus
- Leibniz-Institut für Katalyse e.V. an der; Universität Rostock; Albert-Einstein-Straße 29a 18059 Rostock Germany
| | - Marga-Martina Pohl
- Leibniz-Institut für Katalyse e.V. an der; Universität Rostock; Albert-Einstein-Straße 29a 18059 Rostock Germany
| | - Jörg Radnik
- Leibniz-Institut für Katalyse e.V. an der; Universität Rostock; Albert-Einstein-Straße 29a 18059 Rostock Germany
| | - Matthias Schneider
- Leibniz-Institut für Katalyse e.V. an der; Universität Rostock; Albert-Einstein-Straße 29a 18059 Rostock Germany
| | - Stephan Bachmann
- Process Chemistry and Catalysis; F. Hoffmann-La Roche Ltd.; Grenzacherstrasse 124 4070 Basel Switzerland
| | - Michelangelo Scalone
- Process Chemistry and Catalysis; F. Hoffmann-La Roche Ltd.; Grenzacherstrasse 124 4070 Basel Switzerland
| | - Kathrin Junge
- Leibniz-Institut für Katalyse e.V. an der; Universität Rostock; Albert-Einstein-Straße 29a 18059 Rostock Germany
| | - Matthias Beller
- Leibniz-Institut für Katalyse e.V. an der; Universität Rostock; Albert-Einstein-Straße 29a 18059 Rostock Germany
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48
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Sahoo B, Surkus AE, Pohl MM, Radnik J, Schneider M, Bachmann S, Scalone M, Junge K, Beller M. A Biomass-Derived Non-Noble Cobalt Catalyst for Selective Hydrodehalogenation of Alkyl and (Hetero)Aryl Halides. Angew Chem Int Ed Engl 2017; 56:11242-11247. [DOI: 10.1002/anie.201702478] [Citation(s) in RCA: 68] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2017] [Revised: 04/27/2017] [Indexed: 12/22/2022]
Affiliation(s)
- Basudev Sahoo
- Leibniz-Institut für Katalyse e.V. an der; Universität Rostock; Albert-Einstein-Straße 29a 18059 Rostock Germany
| | - Annette-Enrica Surkus
- Leibniz-Institut für Katalyse e.V. an der; Universität Rostock; Albert-Einstein-Straße 29a 18059 Rostock Germany
| | - Marga-Martina Pohl
- Leibniz-Institut für Katalyse e.V. an der; Universität Rostock; Albert-Einstein-Straße 29a 18059 Rostock Germany
| | - Jörg Radnik
- Leibniz-Institut für Katalyse e.V. an der; Universität Rostock; Albert-Einstein-Straße 29a 18059 Rostock Germany
| | - Matthias Schneider
- Leibniz-Institut für Katalyse e.V. an der; Universität Rostock; Albert-Einstein-Straße 29a 18059 Rostock Germany
| | - Stephan Bachmann
- Process Chemistry and Catalysis; F. Hoffmann-La Roche Ltd.; Grenzacherstrasse 124 4070 Basel Switzerland
| | - Michelangelo Scalone
- Process Chemistry and Catalysis; F. Hoffmann-La Roche Ltd.; Grenzacherstrasse 124 4070 Basel Switzerland
| | - Kathrin Junge
- Leibniz-Institut für Katalyse e.V. an der; Universität Rostock; Albert-Einstein-Straße 29a 18059 Rostock Germany
| | - Matthias Beller
- Leibniz-Institut für Katalyse e.V. an der; Universität Rostock; Albert-Einstein-Straße 29a 18059 Rostock Germany
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49
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Chung R, Vo A, Hein JE. Copper-Catalyzed Hydrogen/Iodine Exchange in Terminal and 1-Iodoalkynes. ACS Catal 2017. [DOI: 10.1021/acscatal.6b03515] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Ryan Chung
- Department
of Chemistry, The University of British Columbia, Vancouver, British Columbia V6T 1Z1, Canada
| | - Anh Vo
- Department
of Chemistry and Chemical Biology, University of California, Merced, Merced, California 95343, United States
| | - Jason E. Hein
- Department
of Chemistry, The University of British Columbia, Vancouver, British Columbia V6T 1Z1, Canada
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50
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Ong DY, Tejo C, Xu K, Hirao H, Chiba S. Hydrodehalogenation of Haloarenes by a Sodium Hydride-Iodide Composite. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201611495] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Derek Yiren Ong
- Division of Chemistry and Biological Chemistry; School of Physical and Mathematical Sciences; Nanyang Technological University; Singapore 637371 Singapore
| | - Ciputra Tejo
- Division of Chemistry and Biological Chemistry; School of Physical and Mathematical Sciences; Nanyang Technological University; Singapore 637371 Singapore
| | - Kai Xu
- Division of Chemistry and Biological Chemistry; School of Physical and Mathematical Sciences; Nanyang Technological University; Singapore 637371 Singapore
| | - Hajime Hirao
- Division of Chemistry and Biological Chemistry; School of Physical and Mathematical Sciences; Nanyang Technological University; Singapore 637371 Singapore
| | - Shunsuke Chiba
- Division of Chemistry and Biological Chemistry; School of Physical and Mathematical Sciences; Nanyang Technological University; Singapore 637371 Singapore
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