1
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Wang PZ, Chen JR, Xiao WJ. Emerging Trends in Copper-Promoted Radical-Involved C-O Bond Formations. J Am Chem Soc 2023; 145:17527-17550. [PMID: 37531466 DOI: 10.1021/jacs.3c04879] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/04/2023]
Abstract
The C-O bond is ubiquitous in biologically active molecules, pharmaceutical agents, and functional materials, thereby making it an important functional group. Consequently, the development of C-O bond-forming reactions using catalytic strategies has become an increasingly important research topic in organic synthesis because more conventional methods involving strong base and acid have many limitations. In contrast to the ionic-pathway-based methods, copper-promoted radical-mediated C-O bond formation is experiencing a surge in research interest owing to a renaissance in free-radical chemistry and photoredox catalysis. This Perspective highlights and appraises state-of-the-art techniques in this burgeoning research field. The contents are organized according to the different reaction types and working models.
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Affiliation(s)
- Peng-Zi Wang
- College of Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan, Hubei 430079, China
| | - Jia-Rong Chen
- College of Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan, Hubei 430079, China
- Wuhan Institute of Photochemistry and Technology, 7 North Bingang Road, Wuhan, Hubei 430083, China
| | - Wen-Jing Xiao
- College of Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan, Hubei 430079, China
- Wuhan Institute of Photochemistry and Technology, 7 North Bingang Road, Wuhan, Hubei 430083, China
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
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2
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Wu Z, Hu M, Jin Y, Li J, Wu W, Jiang H. Synthesis of medicinally relevant oxalylamines via copper/Lewis acid synergistic catalysis. SCIENCE ADVANCES 2021; 7:eabh4088. [PMID: 34452916 PMCID: PMC8397263 DOI: 10.1126/sciadv.abh4088] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/07/2021] [Accepted: 07/07/2021] [Indexed: 06/13/2023]
Abstract
Allylamines have long been recognized as valuable synthons because of their excellent reactivity in organic synthesis. Here, an efficient amination reaction of allenyl ethers via copper/Lewis acid synergistic catalysis has been established, providing straightforward access to diverse functionalized Z-oxalylamines and E -halogenated oxalylamines in good to excellent yields with high regio- and stereoselectivities. The developed method tolerates more than 100 examples that include late-stage functionalization of bioactive molecules, and features gram-scale synthesis of oxalylamines with high turnover number (TON > 1000) under mild and simple conditions. The applicability of the protocol is further demonstrated with the construction of drug molecules.
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Affiliation(s)
- Ziying Wu
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Miao Hu
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Yangbin Jin
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Jianxiao Li
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Wanqing Wu
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China.
| | - Huanfeng Jiang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China.
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3
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Huang HM, Bellotti P, Glorius F. Transition metal-catalysed allylic functionalization reactions involving radicals. Chem Soc Rev 2020; 49:6186-6197. [DOI: 10.1039/d0cs00262c] [Citation(s) in RCA: 87] [Impact Index Per Article: 21.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
In this tutorial review, different types of transition metal-catalysed allylic functionalization reactions involving radicals are highlighted.
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Affiliation(s)
- Huan-Ming Huang
- Organisch-Chemisches Institut
- Westfälische Wilhelms-Universität Münster
- 48149 Münster
- Germany
| | - Peter Bellotti
- Organisch-Chemisches Institut
- Westfälische Wilhelms-Universität Münster
- 48149 Münster
- Germany
| | - Frank Glorius
- Organisch-Chemisches Institut
- Westfälische Wilhelms-Universität Münster
- 48149 Münster
- Germany
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4
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Liu L, Ward RM, Schomaker JM. Mechanistic Aspects and Synthetic Applications of Radical Additions to Allenes. Chem Rev 2019; 119:12422-12490. [PMID: 31833759 DOI: 10.1021/acs.chemrev.9b00312] [Citation(s) in RCA: 122] [Impact Index Per Article: 24.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
More than 50 years have passed since Haszeldine reported the first addition of a trifluoromethyl radical to an allene; in the intervening years, both the chemistry of allenes and the reactivity of single-electron species have become topics of intense interest. In this Review, we provide an overview of the fundamentals of radical additions to allenes and highlight the emergence of theoretical and experimental evidence that reveals unique reactivity patterns for radical additions to allenes as compared with other unsaturated compounds. Factors capable of exerting control over the chemo-, regio-, and stereoselectivities of the attack of carbon- and heteroatom-based radicals at each of the three potential reactive sites in an allene substrate are described. These include reaction conditions, the nature of the attacking radical, the substitution pattern of the allene, and the length of the linker between the radical center and the proximal allene carbon in the substrate. Cycloaddition reactions between allenes and partners containing π-bonds, which are likely to proceed through radical pathways, are presented to highlight their ability to rapidly access complex polycyclic scaffolds. Finally, the synthetic utility of the products arising from these chemistries is described, including their applications to the construction of complex molecules.
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Affiliation(s)
- Lu Liu
- Department of Chemistry , University of Wisconsin-Madison , 1101 University Avenue , Madison , Wisconsin 53706 , United States
| | - Robert M Ward
- Department of Chemistry , University of Wisconsin-Madison , 1101 University Avenue , Madison , Wisconsin 53706 , United States
| | - Jennifer M Schomaker
- Department of Chemistry , University of Wisconsin-Madison , 1101 University Avenue , Madison , Wisconsin 53706 , United States
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5
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Kawamura S, Sodeoka M. Fluoroalkylation Methods for Synthesizing Versatile Building Blocks. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2019. [DOI: 10.1246/bcsj.20190080] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Shintaro Kawamura
- 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
- 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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6
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Chen J, Gao S, Gorden JD, Chen M. Stereoselective Syntheses of γ-Boryl Substituted syn-β-Alkoxy- and syn-β-Amino-homoallylic Alcohols via a Regio- and Stereoselective Allene Diboration and Aldehyde Allylboration Reaction Sequence. Org Lett 2019; 21:4638-4641. [DOI: 10.1021/acs.orglett.9b01535] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Jichao Chen
- Department of Chemistry and Biochemistry, Auburn University, Auburn, Alabama 36849, United States
| | - Shang Gao
- Department of Chemistry and Biochemistry, Auburn University, Auburn, Alabama 36849, United States
| | - John D. Gorden
- Department of Chemistry and Biochemistry, Auburn University, Auburn, Alabama 36849, United States
| | - Ming Chen
- Department of Chemistry and Biochemistry, Auburn University, Auburn, Alabama 36849, United States
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7
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Brochetta M, Borsari T, Gandini A, Porey S, Deb A, Casali E, Chakraborty A, Zanoni G, Maiti D. Trifluoromethylation of Allenes: An Expedient Access to α‐Trifluoromethylated Enones at Room Temperature. Chemistry 2018; 25:750-753. [DOI: 10.1002/chem.201805097] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2018] [Revised: 11/02/2018] [Indexed: 02/03/2023]
Affiliation(s)
- Massimo Brochetta
- Department of ChemistryUniversity of Pavia Viale Taramelli 10 27100 Pavia Italy
| | - Tania Borsari
- Department of ChemistryUniversity of Pavia Viale Taramelli 10 27100 Pavia Italy
| | - Andrea Gandini
- Department of ChemistryUniversity of Pavia Viale Taramelli 10 27100 Pavia Italy
| | - Sandip Porey
- Department of ChemistryIndian Institute of Technology Bombay Powai Mumbai- 400 076 India
| | - Arghya Deb
- Merkert Chemistry CenterBoston College Massachusetts USA
| | - Emanuele Casali
- Department of ChemistryUniversity of Pavia Viale Taramelli 10 27100 Pavia Italy
| | - Arka Chakraborty
- Department of ChemistryIndian Institute of Technology Bombay Powai Mumbai- 400 076 India
| | - Giuseppe Zanoni
- Department of ChemistryUniversity of Pavia Viale Taramelli 10 27100 Pavia Italy
| | - Debabrata Maiti
- Department of ChemistryUniversity of Pavia Viale Taramelli 10 27100 Pavia Italy
- Department of ChemistryIndian Institute of Technology Bombay Powai Mumbai- 400 076 India
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8
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Ruan LH, Wang Q, Sun J, Zhou MD. Base-Promoted Synthesis of β
-Ketophosphine Oxides from Diphenylphosphorylallenes. ASIAN J ORG CHEM 2018. [DOI: 10.1002/ajoc.201800348] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Li-Heng Ruan
- School of Chemistry and Materials Science; Liaoning Shihua University; Dandong Road, No. 1 Fushun 113001 China
| | - Qiang Wang
- School of Chemistry and Materials Science; Liaoning Shihua University; Dandong Road, No. 1 Fushun 113001 China
| | - Jing Sun
- School of Chemistry and Materials Science; Liaoning Shihua University; Dandong Road, No. 1 Fushun 113001 China
| | - Ming-Dong Zhou
- School of Chemistry and Materials Science; Liaoning Shihua University; Dandong Road, No. 1 Fushun 113001 China
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9
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Grelier G, Darses B, Dauban P. Hypervalent organoiodine compounds: from reagents to valuable building blocks in synthesis. Beilstein J Org Chem 2018; 14:1508-1528. [PMID: 30013678 PMCID: PMC6037006 DOI: 10.3762/bjoc.14.128] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2018] [Accepted: 05/25/2018] [Indexed: 01/04/2023] Open
Abstract
Most of the polyvalent organoiodine compounds derive from iodoarenes, which are released in stoichiometric amounts in any reaction mediated by λ3- or λ5-iodanes. In parallel to the development of solid-supported reagents or reactions catalytic in iodine, a third strategy has emerged to address this issue in terms of sustainability. The atom-economy of transformations involving stoichiometric amounts of λ3- or λ5-iodanes, thus, has been improved by designing tandem reactions that allows for incorporating the aryl motif into the products through a subsequent one-pot nucleophilic addition or catalytic coupling reaction. This review summarizes the main achievements reported in this area.
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Affiliation(s)
- Gwendal Grelier
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301, Université Paris-Sud, Université Paris-Saclay, 1, av. de la Terrasse, 91198 Gif-sur-Yvette, France
| | - Benjamin Darses
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301, Université Paris-Sud, Université Paris-Saclay, 1, av. de la Terrasse, 91198 Gif-sur-Yvette, France
| | - Philippe Dauban
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301, Université Paris-Sud, Université Paris-Saclay, 1, av. de la Terrasse, 91198 Gif-sur-Yvette, France
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10
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Wang CY, Pan GH, Chen F, Li JH. Oxidative cyclization of 2-allenyl-1,1'-biphenyls with α-carbonyl alkyl bromides: facile access to functionalized phenanthrenes. Chem Commun (Camb) 2018; 53:4730-4733. [PMID: 28405640 DOI: 10.1039/c7cc00483d] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
A new copper-facilitated oxidative cyclization of 2-allenyl-1,1'-biphenyls with α-carbonyl alkyl bromides for producing functionalized phenanthrenes is presented, which represents the first allene 2,3-dicarbofunctionalization triggered by oxidative radical-medicated C3-addition of the terminal allene moiety and C-Br/C-H functionalization.
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Affiliation(s)
- Cheng-Yong Wang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha 410082, China.
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11
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Qi C, Yan D, Xiong W, Jiang H. Silver-catalyzed regioselective coupling of carbon dioxide, amines and aryloxyallenes leading to O-allyl carbamates. J CO2 UTIL 2018. [DOI: 10.1016/j.jcou.2017.12.013] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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12
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Ye Q, Jiang M, Deng QH, Liu JT. Copper-catalyzed Intramolecular Carbotrifluoromethylation of Ene-Imines for the Construction of 3-(2,2,2-Trifluoro)ethylated 4-Amino-Chromans. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201701298] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Qin Ye
- Key Laboratory of Resource Chemistry of Ministry of Education; Shanghai Key Laboratory of Rare Earth Functional Materials; Shanghai Normal University; Shanghai 200234 People's Republic of China
| | - Min Jiang
- Key Laboratory of Organofluorine Chemistry; Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 People's Republic of China
| | - Qing-Hai Deng
- Key Laboratory of Resource Chemistry of Ministry of Education; Shanghai Key Laboratory of Rare Earth Functional Materials; Shanghai Normal University; Shanghai 200234 People's Republic of China
| | - Jin-Tao Liu
- Key Laboratory of Organofluorine Chemistry; Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 People's Republic of China
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13
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Pan S, Huang Y, Xu XH, Qing FL. Copper-Assisted Oxidative Trifluoromethylthiolation of 2,3-Allenoic Acids with AgSCF3. Org Lett 2017; 19:4624-4627. [DOI: 10.1021/acs.orglett.7b02249] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Shen Pan
- College
of Chemistry, Chemical Engineering and Biotechnology, Donghua University, 2999 North Renmin Lu, Shanghai 201620, China
| | - Yangen Huang
- College
of Chemistry, Chemical Engineering and Biotechnology, Donghua University, 2999 North Renmin Lu, Shanghai 201620, China
| | - Xiu-Hua Xu
- Key
Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic
Chemistry, University of Chinese Academy of Science, Chinese Academy of Science, 345 Lingling Lu, Shanghai 200032, China
| | - Feng-Ling Qing
- College
of Chemistry, Chemical Engineering and Biotechnology, Donghua University, 2999 North Renmin Lu, Shanghai 201620, China
- Key
Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic
Chemistry, University of Chinese Academy of Science, Chinese Academy of Science, 345 Lingling Lu, Shanghai 200032, China
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14
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Abstract
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The chemistry of hypervalent iodine(III) compounds
has gained great interest over the past 30 years. Hypervalent iodine(III)
compounds show valuable ionic reactivity due to their high electrophilicity
but also express radical reactivity as single electron oxidants for
carbon and heteroatom radical generation. Looking at ionic chemistry,
these iodine(III) reagents can act as electrophiles to efficiently
construct C–CF3, X–CF3 (X = heteroatom),
C–Rf (Rf = perfluoroalkyl), X–Rf, C–N3, C–CN, S–CN, and C–X
bonds. In some cases, a Lewis or a Bronsted acid is necessary to increase
their electrophilicity. In these transformations, the iodine(III)
compounds react as formal “CF3+”,
“Rf+”, “N3+”, “Ar+”, “CN+”, and “X+” equivalents. On the other
hand, one electron reduction of the I(III) reagents opens the door
to the radical world, which is the topic of this Account that focuses
on radical reactivity of hypervalent iodine(III) compounds such as
the Togni reagent, Zhdankin reagent, diaryliodonium salts, aryliodonium
ylides, aryl(cyano)iodonium triflates, and aryl(perfluoroalkyl)iodonium
triflates. Radical generation starting with I(III) reagents can also
occur via thermal or light mediated homolysis of the weak hypervalent
bond in such reagents. This reactivity can be used for alkane C–H
functionalization. We will address important pioneering work in the
area but will mainly focus on studies that have been conducted by
our group over the last 5 years. We entered the field by investigating
transition metal free single electron reduction of Togni type reagents
using the readily available sodium 2,2,6,6-tetramethylpiperidine-1-oxyl
salt (TEMPONa) as an organic one electron reductant for clean generation
of the trifluoromethyl radical and perfluoroalkyl radicals. That valuable
approach was later successfully also applied to the generation of
azidyl and aryl radicals starting with the corresponding benziodoxole
(Zhdankin reagent) and iodonium salts. In the presence of alkenes
as radical acceptors, vicinal trifluoromethyl-, azido-, and arylaminoxylation
products result via a sequence comprising radical addition to the
alkene and subsequent TEMPO trapping. Electron-rich arenes also react
with I(III) reagents via single electron transfer (SET) to give arene
radical cations, which can then engage in arylation reactions. We
also recognized that the isonitrile functionality in aryl isonitriles
is a highly efficient perfluoroalkyl radical acceptor, and reaction
of Rf-benziodoxoles (Togni type reagents) in the presence
of a radical initiator provides various perfluoroalkylated N-heterocycles (indoles, phenanthridines, quinolines, etc.).
We further found that aryliodonium ylides, previously used as carbene
precursors in metal-mediated cyclopropanation reactions, react via
SET reduction with TEMPONa to the corresponding aryl radicals. As
a drawback of all these transformations, we realized that only one
ligand of the iodine(III) reagent gets transferred to the substrate.
To further increase atom-economy of such conversions, we identified
cyano or perfluoroalkyl iodonium triflate salts as valuable reagents
for stereoselective vicinal alkyne difunctionalization, where two
ligands from the I(III) reagent are sequentially transferred to an
alkyne acceptor. Finally, we will discuss alkynyl-benziodoxoles
as radical acceptors for alkynylation reactions. Similar reactivity
was found for the Zhdankin reagent that has been successfully applied
to azidation of C-radicals, and also cyanation is possible with a
cyano I(III) reagent. To summarize, this Account focuses on the design,
development, mechanistic understanding, and synthetic application
of hypervalent iodine(III) reagents in radical chemistry.
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Affiliation(s)
- Xi Wang
- Institute of Organic Chemistry, University of Münster, Corrensstrasse 40, 48149 Münster, Germany
| | - Armido Studer
- Institute of Organic Chemistry, University of Münster, Corrensstrasse 40, 48149 Münster, Germany
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15
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Wang X, Studer A. Regio- and Stereoselective Radical Perfluoroalkyltriflation of Alkynes Using Phenyl(perfluoroalkyl)iodonium Triflates. Org Lett 2017; 19:2977-2980. [PMID: 28517935 PMCID: PMC5460293 DOI: 10.1021/acs.orglett.7b01215] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
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A method
for regio- and stereoselective anti-addition of the perfluoroalkyl
and the triflate group of phenyl(perfluoroalkyl)iodonium
triflates to alkynes is presented. The radical reaction uses cheap
CuCl as a smart initiator and can be conducted in gram scale. The
perfluoroalkyltriflated products are readily further functionalized,
rendering this transformation valuable.
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Affiliation(s)
- Xi Wang
- Institute of Organic Chemistry, University of Münster , Corrensstrasse 40, 48149 Münster, Germany
| | - Armido Studer
- Institute of Organic Chemistry, University of Münster , Corrensstrasse 40, 48149 Münster, Germany
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16
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Tomita R, Koike T, Akita M. Photoredox-catalyzed oxytrifluoromethylation of allenes: stereoselective synthesis of 2-trifluoromethylated allyl acetates. Chem Commun (Camb) 2017; 53:4681-4684. [DOI: 10.1039/c7cc01759f] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
A novel stereoselective synthesis of 2-CF3-allyl acetates by photocatalytic oxytrifluoromethylation of allenes has been developed.
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Affiliation(s)
- Ren Tomita
- Laboratory for Chemistry and Life Science
- Institute of Innovative Research
- Tokyo Institute of Technology
- Yokohama
- Japan
| | - Takashi Koike
- Laboratory for Chemistry and Life Science
- Institute of Innovative Research
- Tokyo Institute of Technology
- Yokohama
- Japan
| | - Munetaka Akita
- Laboratory for Chemistry and Life Science
- Institute of Innovative Research
- Tokyo Institute of Technology
- Yokohama
- Japan
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17
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Tang Y, Yu Q, Ma S. Efficient trifluoromethylation via the cyclopropanation of allenes and subsequent C–C bond cleavage. Org Chem Front 2017. [DOI: 10.1039/c7qo00419b] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Trifluoromethyl has been efficiently incorporated into organic skeletons via allene cyclization and C–C bond cleavage.
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Affiliation(s)
- Yang Tang
- State Key Laboratory of Organometallic Chemistry
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
- P. R. China
| | - Qiong Yu
- Department of Chemistry
- East China Normal University
- Shanghai 200062
- P. R. China
| | - Shengming Ma
- State Key Laboratory of Organometallic Chemistry
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
- P. R. China
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18
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Wang Y, Jiang M, Liu JT. Copper-Catalyzed Diastereoselective Synthesis of Trifluoromethylated Tetrahydrofurans. Adv Synth Catal 2016. [DOI: 10.1002/adsc.201501166] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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19
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Jacquet J, Blanchard S, Derat E, Desage-El Murr M, Fensterbank L. Redox-ligand sustains controlled generation of CF 3 radicals by well-defined copper complex. Chem Sci 2016; 7:2030-2036. [PMID: 29899928 PMCID: PMC5968567 DOI: 10.1039/c5sc03636d] [Citation(s) in RCA: 87] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2015] [Accepted: 11/27/2015] [Indexed: 01/17/2023] Open
Abstract
A well-defined copper complex bearing iminosemiquinone ligands performs single electron reduction of an electrophilic CF3+ source into CF˙3 radicals. This redox behavior is enabled by the ligand which shuttles through two different redox states (iminosemiquinone and iminobenzoquinone) while the copper center is preserved as a Cu(ii). This system was used in the trifluoromethylation of silyl enol ethers, heteroaromatics and in the hydrotrifluoromethylation of alkynes. This is the first example of cooperative redox catalysis for the controlled generation of CF˙3 radicals.
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Affiliation(s)
- Jérémy Jacquet
- Institut Parisien de Chimie Moléculaire , UMR CNRS 8232 , Sorbonne Universités UPMC Univ Paris 06 , 4 Place Jussieu, CC 229 , 75252 Paris Cedex 05 , France . ;
| | - Sébastien Blanchard
- Institut Parisien de Chimie Moléculaire , UMR CNRS 8232 , Sorbonne Universités UPMC Univ Paris 06 , 4 Place Jussieu, CC 229 , 75252 Paris Cedex 05 , France . ;
| | - Etienne Derat
- Institut Parisien de Chimie Moléculaire , UMR CNRS 8232 , Sorbonne Universités UPMC Univ Paris 06 , 4 Place Jussieu, CC 229 , 75252 Paris Cedex 05 , France . ;
| | - Marine Desage-El Murr
- Institut Parisien de Chimie Moléculaire , UMR CNRS 8232 , Sorbonne Universités UPMC Univ Paris 06 , 4 Place Jussieu, CC 229 , 75252 Paris Cedex 05 , France . ;
| | - Louis Fensterbank
- Institut Parisien de Chimie Moléculaire , UMR CNRS 8232 , Sorbonne Universités UPMC Univ Paris 06 , 4 Place Jussieu, CC 229 , 75252 Paris Cedex 05 , France . ;
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20
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Abstract
The preparation, structure, and chemistry of hypervalent iodine compounds are reviewed with emphasis on their synthetic application. Compounds of iodine possess reactivity similar to that of transition metals, but have the advantage of environmental sustainability and efficient utilization of natural resources. These compounds are widely used in organic synthesis as selective oxidants and environmentally friendly reagents. Synthetic uses of hypervalent iodine reagents in halogenation reactions, various oxidations, rearrangements, aminations, C-C bond-forming reactions, and transition metal-catalyzed reactions are summarized and discussed. Recent discovery of hypervalent catalytic systems and recyclable reagents, and the development of new enantioselective reactions using chiral hypervalent iodine compounds represent a particularly important achievement in the field of hypervalent iodine chemistry. One of the goals of this Review is to attract the attention of the scientific community as to the benefits of using hypervalent iodine compounds as an environmentally sustainable alternative to heavy metals.
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Affiliation(s)
- Akira Yoshimura
- Department of Chemistry and Biochemistry, University of Minnesota Duluth , Duluth, Minnesota 55812, United States
| | - Viktor V Zhdankin
- Department of Chemistry and Biochemistry, University of Minnesota Duluth , Duluth, Minnesota 55812, United States
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21
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Zhu N, Wang F, Chen P, Ye J, Liu G. Copper-Catalyzed Intermolecular Trifluoromethylazidation and Trifluoromethylthiocyanation of Allenes: Efficient Access to CF3-Containing Allyl Azides and Thiocyanates. Org Lett 2015; 17:3580-3. [DOI: 10.1021/acs.orglett.5b01677] [Citation(s) in RCA: 67] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Na Zhu
- Engineering
Research Centre of Pharmaceutical Process
Chemistry, Ministry of Education, School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai, China 200237
| | - Fei Wang
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, China 200032
| | - Pinhong Chen
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, China 200032
| | - Jinxing Ye
- Engineering
Research Centre of Pharmaceutical Process
Chemistry, Ministry of Education, School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai, China 200237
| | - Guosheng Liu
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, China 200032
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22
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Wang Y, Jiang M, Liu JT. Copper-catalyzed stereoselective oxytrifluoromethylation of propargyl amides for the construction of oxazolines. Org Chem Front 2015. [DOI: 10.1039/c5qo00044k] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Copper-catalyzed stereoselective oxytrifluoromethylation of terminal propargyl amides was investigated for the construction of oxazolines under mild conditions.
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Affiliation(s)
- Yanan Wang
- Key Laboratory of Organofluorine Chemistry
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
- China
| | - Min Jiang
- Key Laboratory of Organofluorine Chemistry
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
- China
| | - Jin-Tao Liu
- Key Laboratory of Organofluorine Chemistry
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
- China
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23
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Wang Y, Jiang M, Liu JT. Copper-Catalyzed Intramolecular Carbotrifluoromethylation of Alkynes for the Construction of Trifluoromethylated Heterocycles. Chemistry 2014; 20:15315-9. [DOI: 10.1002/chem.201404386] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2014] [Indexed: 12/12/2022]
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