1
|
Quiclet-Sire B, Zard SZ. Some Aspects of α-(Acyloxy)alkyl Radicals in Organic Synthesis. Molecules 2023; 28:7561. [PMID: 38005282 PMCID: PMC10673534 DOI: 10.3390/molecules28227561] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Revised: 11/08/2023] [Accepted: 11/10/2023] [Indexed: 11/26/2023] Open
Abstract
The preparation and use of α-(acyloxy)alkyl xanthates to generate and capture α-(acyloxy)alkyl radicals is briefly reviewed. Their inter- and intramolecular additions to both activated and unactivated, electronically unbiased, alkenes, and to (hetero)aromatic rings, as well as their radical allylation and vinylation reactions are described. Application to the total synthesis of two 4-hydroxytetralone natural products is also presented.
Collapse
Affiliation(s)
| | - Samir Z. Zard
- Laboratoire de Synthèse Organique associé au C.N.R.S., UMR 7652, Ecole Polytechnique, 91128 Palaiseau, France;
| |
Collapse
|
2
|
Quiclet-Sire B, Zard SZ. The xanthate route to tetralones, tetralins, and naphthalenes. A brief account. Org Biomol Chem 2023; 21:910-924. [PMID: 36607600 DOI: 10.1039/d2ob02159e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The present account summarises routes to tetralones, tetralines, and naphthalenes based on the chemistry of xanthates developed in the authors' laboratory. The degenerative reversible transfer of xanthates allows radical addition even to unactivated, electronically unbiased alkenes, and tolerates a broad range of functional groups, in particular common polar groups such as esters, ketones, nitriles, amides, carbamates, etc. Xanthates also allow radical ring closures onto aromatic rings. This feature, in combination with the intermolecular addition to alkenes, can be used to construct tetralones and tetralines. With the appropriate appendages, the former can be converted into napthalenes with a variety of substitution patterns. This translates into a convergent approach to a vast array of building blocks of interest to the pharmaceutical and agrochemical industries, and to material sciences.
Collapse
Affiliation(s)
- Béatrice Quiclet-Sire
- Laboratoire de Synthèse Organique UMR 7652, Ecole Polytechnique, 91128 Palaiseau, France.
| | - Samir Z Zard
- Laboratoire de Synthèse Organique UMR 7652, Ecole Polytechnique, 91128 Palaiseau, France.
| |
Collapse
|
3
|
Boyer C, Kamigaito M, Satoh K, Moad G. Radical-Promoted Single-unit Monomer Insertion (SUMI) [aka. Reversible-Deactivation Radical Addition (RDRA)]. Prog Polym Sci 2023. [DOI: 10.1016/j.progpolymsci.2023.101648] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
|
4
|
Zard SZ. The xanthate route to six-membered carbocycles. JOURNAL OF CHEMICAL RESEARCH 2022. [DOI: 10.1177/17475198221088194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Convergent routes to various six-membered carbocyclic architectures exploiting the unique radical chemistry of xanthates are described in this brief review. Three approaches are discussed. The first is the modification of existing cyclohexane building blocks, namely, cyclohexanones, cyclohexenones and cyclohexenes. The second deals with the construction of six-membered carbocycles by associating the chemistry of xanthates with classical ionic reactions, especially the Robinson annulation, the Michael addition and the Horner–Wadsworth–Emmons condensation. Finally, the third route is the formation of six-membered rings by direct six- exo and, but more rarely, six- endo cyclisation modes. Many of the complex structures presented herein would be tedious to obtain by more traditional methods.
Collapse
Affiliation(s)
- Samir Z Zard
- Laboratoire de Synthèse Organique associé au C. N. R. S., UMR 7652, Ecole Polytechnique, Palaiseau, France
| |
Collapse
|
5
|
López-Mendoza P, Miranda LD. Photocatalytic xanthate-based radical addition/cyclization reaction sequence toward 2-biphenyl isocyanides: synthesis of 6-alkylated phenanthridines. Org Biomol Chem 2021; 18:3487-3491. [PMID: 32347280 DOI: 10.1039/d0ob00136h] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
A photocatalytic xanthate-based radical addition/cyclization reaction cascade toward 2-biphenylisocyanides is described as a practical and modular approach to 6-alkylated phenanthridines. The use of xanthates as radical precursors allowed the synthesis of diversely 6-substituted phenanthridines. Electrophilic radicals derived from nitriles, aromatic and aliphatic ketones, malonates, and amide derivatives, as well as radicals derived from phthalimidomethyl and benzylic derivatives were successfully introduced. The reaction proceeds under mild conditions without a stoichiometric amount of oxidant. Thirty novel phenanthridine scaffolds were synthesized with yields ranging from 24 to 76%.
Collapse
Affiliation(s)
- Pedro López-Mendoza
- Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior S. N., Ciudad Universitaria, Coyoacán, Ciudad de México 04510, Mexico.
| | | |
Collapse
|
6
|
|
7
|
Zard SZ. Discovery of the RAFT/MADIX Process: Mechanistic Insights and Polymer Chemistry Implications. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c01441] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Samir Z. Zard
- Laboratoire de Synthèse Organique Associé au CNRS, UMR 7652, Ecole Polytechnique, 91128 Palaiseau, France
| |
Collapse
|
8
|
Zard SZ. The Xanthate Route to Indolines, Indoles, and their Aza Congeners. Chemistry 2020; 26:12689-12705. [DOI: 10.1002/chem.202001341] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Revised: 04/17/2020] [Indexed: 12/25/2022]
Affiliation(s)
- Samir Z. Zard
- Laboratoire de Synthèse Organique, UMR 7652 Ecole Polytechnique 91128 Palaiseau France
| |
Collapse
|
9
|
Xu J. Single Unit Monomer Insertion: A Versatile Platform for Molecular Engineering through Radical Addition Reactions and Polymerization. Macromolecules 2019. [DOI: 10.1021/acs.macromol.9b01365] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Jiangtao Xu
- Centre for Advanced Macromolecular Design and Australian Centre for NanoMedicine, School of Chemical Engineering, UNSW, Sydney, NSW 2052, Australia
| |
Collapse
|
10
|
|
11
|
Cuadros S, Horwitz MA, Schweitzer-Chaput B, Melchiorre P. A visible-light mediated three-component radical process using dithiocarbamate anion catalysis. Chem Sci 2019; 10:5484-5488. [PMID: 31293731 PMCID: PMC6553376 DOI: 10.1039/c9sc00833k] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2019] [Accepted: 04/28/2019] [Indexed: 01/04/2023] Open
Abstract
A three-component radical process is reported that, by coupling alkyl chlorides, maleimides, and heteroaromatic fragments, installs multiple biologically relevant heterocycles within complex cascade products. This method, which generates radicals via an SN2-based photochemical catalytic mechanism, activates substrates incompatible with or inert to classical radical-generating strategies.
We report a photoinduced three-component radical process, which couples readily available alkyl chlorides, maleimides, and heteroaromatic fragments to rapidly generate complex chiral products with high diastereocontrol. This method generates radicals via an SN2-based photochemical catalytic mechanism, which is not reliant on the redox properties of the precursors. It therefore grants access to open-shell intermediates from substrates that would be incompatible with or inert to classical radical-generating strategies. The redox-neutral conditions of this process make it tolerant of redox-sensitive substrates and allow the installation of multiple biologically relevant heterocycles within the cascade products.
Collapse
Affiliation(s)
- Sara Cuadros
- ICIQ - Institute of Chemical Research of Catalonia , The Barcelona Institute of Science and Technology , Avenida Països Catalans 16 , 43007 , Tarragona , Spain . ; http://www.iciq.org/research/research_group/prof-paolo-melchiorre/
| | - Matthew A Horwitz
- ICIQ - Institute of Chemical Research of Catalonia , The Barcelona Institute of Science and Technology , Avenida Països Catalans 16 , 43007 , Tarragona , Spain . ; http://www.iciq.org/research/research_group/prof-paolo-melchiorre/
| | - Bertrand Schweitzer-Chaput
- ICIQ - Institute of Chemical Research of Catalonia , The Barcelona Institute of Science and Technology , Avenida Països Catalans 16 , 43007 , Tarragona , Spain . ; http://www.iciq.org/research/research_group/prof-paolo-melchiorre/
| | - Paolo Melchiorre
- ICIQ - Institute of Chemical Research of Catalonia , The Barcelona Institute of Science and Technology , Avenida Països Catalans 16 , 43007 , Tarragona , Spain . ; http://www.iciq.org/research/research_group/prof-paolo-melchiorre/.,IIT - Istituto Italiano di Tecnologia , Laboratory of Asymmetric Catalysis and Photochemistry , Via Morego 30 , 16163 , Genoa , Italy.,ICREA - Catalan Institution for Research and Advanced Studies , Passeig Lluís Companys 23 , 08010 , Barcelona , Spain
| |
Collapse
|
12
|
|
13
|
Rout SK, Marghem G, Lan J, Leyssens T, Riant O. A radical exchange process: synthesis of bicyclo[1.1.1]pentane derivatives of xanthates. Chem Commun (Camb) 2019; 55:14976-14979. [DOI: 10.1039/c9cc07610g] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
A new approach for the installation of the bicyclo[1.1.1]pentane unit on the xanthate moiety by means of a radical exchange process.
Collapse
Affiliation(s)
- Saroj Kumar Rout
- Institute of Condensed Matter and Nanoscience. Molecular Chemistry
- Materials and Catalysis Division
- Université Catholique de Louvain
- Belgium
| | - Gilles Marghem
- Institute of Condensed Matter and Nanoscience. Molecular Chemistry
- Materials and Catalysis Division
- Université Catholique de Louvain
- Belgium
| | - Junjie Lan
- Institute of Condensed Matter and Nanoscience. Molecular Chemistry
- Materials and Catalysis Division
- Université Catholique de Louvain
- Belgium
| | - Tom Leyssens
- Institute of Condensed Matter and Nanoscience. Molecular Chemistry
- Materials and Catalysis Division
- Université Catholique de Louvain
- Belgium
| | - Olivier Riant
- Institute of Condensed Matter and Nanoscience. Molecular Chemistry
- Materials and Catalysis Division
- Université Catholique de Louvain
- Belgium
| |
Collapse
|
14
|
Kaga A, Wu X, Lim JYJ, Hayashi H, Lu Y, Yeow EKL, Chiba S. Degenerative xanthate transfer to olefins under visible-light photocatalysis. Beilstein J Org Chem 2018; 14:3047-3058. [PMID: 30591827 PMCID: PMC6296426 DOI: 10.3762/bjoc.14.283] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2018] [Accepted: 11/28/2018] [Indexed: 01/14/2023] Open
Abstract
The degenerative transfer of xanthates to olefins is enabled by the iridium-based photocatalyst [Ir{dF(CF3)ppy}2(dtbbpy)](PF6) under blue LED light irradiation. Detailed mechanistic investigations through kinetics and photophysical studies revealed that the process operates under a radical chain mechanism, which is initiated through triplet-sensitization of xanthates by the long-lived triplet state of the iridium-based photocatalyst.
Collapse
Affiliation(s)
- Atsushi Kaga
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
| | - Xiangyang Wu
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
| | - Joel Yi Jie Lim
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
| | - Hirohito Hayashi
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
| | - Yunpeng Lu
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
| | - Edwin K L Yeow
- 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
| |
Collapse
|
15
|
|
16
|
Hayashi H, Kaga A, Wang B, Gagosz F, Chiba S. Use of a benzyl ether as a traceless hydrogen donor in the anti-Markovnikov hydrofunctionalization of alkenes with xanthates. Chem Commun (Camb) 2018; 54:7535-7538. [PMID: 29926014 DOI: 10.1039/c8cc02971g] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
A new protocol for the anti-Markovnikov hydrofunctionalization of alkenyl alcohol O-Bn ethers was developed using xanthates as functionalizing agents in the presence of lauroyl peroxide as a radical initiator and a stoichiometric oxidant. The benzyl group serves as a traceless hydrogen donor in the remote radical hydrogen atom transfer event during the process.
Collapse
Affiliation(s)
- Hirohito Hayashi
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore.
| | | | | | | | | |
Collapse
|
17
|
Sakamoto R, Tomomi Yoshii, Takada H, Maruoka K. A Synthetic Route to Sodium α-Aminoalkanesulfinates and Their Application in the Generation of α-Aminoalkyl Radicals for Radical Addition Reactions. Org Lett 2018; 20:2080-2083. [PMID: 29569931 DOI: 10.1021/acs.orglett.8b00621] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The synthesis of sodium α-aminoalkanesulfinates and their synthetic utility as α-aminoalkyl radical precursors are reported. A variety of α-aminoalkanesulfinates were readily obtained from the reaction between the anions of N-Boc-protected alkylamines and 1,4-diazabicyclo[2.2.2]octanebis(sulfur dioxide). Treatment of sodium α-aminoalkanesulfinates with (diacetoxyiodo)benzene easily generated the corresponding α-aminoalkyl radicals under mild conditions, which were then applied in radical 1,2-addition to imines, radical 1,4-addition to electron-deficient olefins, and radical addition/cyclization to 2-isocyanobiphenyls.
Collapse
Affiliation(s)
- Ryu Sakamoto
- Department of Chemistry, Graduate School of Science , Kyoto University , Sakyo, Kyoto 606-8502 , Japan
| | - Tomomi Yoshii
- Department of Chemistry, Graduate School of Science , Kyoto University , Sakyo, Kyoto 606-8502 , Japan
| | - Hiroyuki Takada
- Department of Chemistry, Graduate School of Science , Kyoto University , Sakyo, Kyoto 606-8502 , Japan
| | - Keiji Maruoka
- Department of Chemistry, Graduate School of Science , Kyoto University , Sakyo, Kyoto 606-8502 , Japan.,School of Chemical Engineering and Light Industry , Guangdong University of Technology , No. 100 West Waihuan Road, HEMC, 4 Panyu District , Guangzhou 510006 , China
| |
Collapse
|
18
|
Zhao Q, Gagosz F. Synthesis of Allenamides and Structurally Related Compounds by a Gold-Catalyzed Hydride Shift Process. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201700615] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Qing Zhao
- Laboratoire de Synthèse Organique; UMR 7652 CNRS/Ecole Polytechnique; Route de Saclay 91128 Palaiseau France
- Department of Chemistry and Biomolecular Sciences; University of Ottawa; K1 N 6 N5 Ottawa Canada
| | - Fabien Gagosz
- Laboratoire de Synthèse Organique; UMR 7652 CNRS/Ecole Polytechnique; Route de Saclay 91128 Palaiseau France
- Department of Chemistry and Biomolecular Sciences; University of Ottawa; K1 N 6 N5 Ottawa Canada
| |
Collapse
|
19
|
Langlais M, Kulai I, Coutelier O, Destarac M. Straightforward Xanthate-Mediated Synthesis of Functional γ-Thiolactones and Their Application to Polymer Synthesis and Modification. Macromolecules 2017. [DOI: 10.1021/acs.macromol.7b00398] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Marvin Langlais
- Laboratoire des IMRCP, Université
de Toulouse, CNRS UMR 5623, Université Paul Sabatier, 118 route de Narbonne, 31062 Toulouse, Cedex 9, France
| | - Ihor Kulai
- Laboratoire des IMRCP, Université
de Toulouse, CNRS UMR 5623, Université Paul Sabatier, 118 route de Narbonne, 31062 Toulouse, Cedex 9, France
| | - Olivier Coutelier
- Laboratoire des IMRCP, Université
de Toulouse, CNRS UMR 5623, Université Paul Sabatier, 118 route de Narbonne, 31062 Toulouse, Cedex 9, France
| | - Mathias Destarac
- Laboratoire des IMRCP, Université
de Toulouse, CNRS UMR 5623, Université Paul Sabatier, 118 route de Narbonne, 31062 Toulouse, Cedex 9, France
| |
Collapse
|
20
|
Quiclet-Sire B, Zard SZ. Some aspects of radical cascade and relay reactions. Proc Math Phys Eng Sci 2017; 473:20160859. [PMID: 28484329 PMCID: PMC5415689 DOI: 10.1098/rspa.2016.0859] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2016] [Accepted: 03/02/2017] [Indexed: 01/28/2023] Open
Abstract
The ability to create carbon-carbon bonds is at the heart of organic synthesis. Radical processes are particularly apt at creating such bonds, especially in cascade or relay sequences where more than one bond is formed, allowing for a rapid assembly of complex structures. In the present brief overview, examples taken from the authors' laboratory will serve to illustrate the strategic impact of radical-based approaches on synthetic planning. Transformations involving nitrogen-centred radicals, electron transfer from metallic nickel and the reversible degenerative exchange of xanthates will be presented and discussed. The last method has proved to be a particularly powerful tool for the intermolecular creation of carbon-carbon bonds by radical additions even to unactivated alkenes. Various functional groups can be brought into the same molecule in a convergent manner and made to react together in order to further increase the structural complexity. One important benefit of this chemistry is the so-called RAFT/MADIX technology for the manufacture of block copolymers of almost any desired architecture.
Collapse
Affiliation(s)
| | - Samir Z. Zard
- Laboratoire de Synthèse Organique, CNRS UMR 7652, Ecole Polytechnique, 91128 Palaiseau, France
| |
Collapse
|
21
|
A convergent route to structures with multiple contiguous carbon–nitrogen bonds. The divergent role of N-acyl groups. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.05.085] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
22
|
Quiclet-Sire B, Zard SZ. On the Strategic Impact of the Degenerative Transfer of Xanthates on Synthetic Planning. Isr J Chem 2016. [DOI: 10.1002/ijch.201600094] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Béatrice Quiclet-Sire
- Laboratoire de Synthèse Organique associé au CNRS; Ecole Polytechnique, F-; 91128 Palaiseau Cedex France
| | - Samir Z. Zard
- Laboratoire de Synthèse Organique associé au CNRS; Ecole Polytechnique, F-; 91128 Palaiseau Cedex France
| |
Collapse
|
23
|
|
24
|
Quiclet-Sire B, Zard SZ. Radical Instability in Aid of Efficiency: A Powerful Route to Highly Functional MIDA Boronates. J Am Chem Soc 2015; 137:6762-5. [DOI: 10.1021/jacs.5b03893] [Citation(s) in RCA: 68] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Béatrice Quiclet-Sire
- Laboratoire de Synthèse
Organique, CNRS UMR 7652, Ecole Polytechnique, 91128 Palaiseau
Cedex, France
| | - Samir Z. Zard
- Laboratoire de Synthèse
Organique, CNRS UMR 7652, Ecole Polytechnique, 91128 Palaiseau
Cedex, France
| |
Collapse
|
25
|
Affiliation(s)
- Graeme Moad
- CSIRO Manufacturing Flagship, Bayview Ave, Clayton, Victoria 3168, Australia
| |
Collapse
|
26
|
Han S, Jones RA, Quiclet-Sire B, Zard SZ. A convergent route to functional protected amines, diamines, and β-amino acids. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.07.055] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
27
|
Han S, Zard SZ. Stabilization of Radicals by Imides. A Modular Stereoselective Approach to Protected Functional 1,2-Diamines. Org Lett 2014; 16:5386-9. [DOI: 10.1021/ol502599r] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Songzhe Han
- Laboratoire
de Synthèse
Organique, UMR 7652 CNRS/Ecole Polytechnique, 91128 Palaiseau
Cedex, France
| | - Samir Z. Zard
- Laboratoire
de Synthèse
Organique, UMR 7652 CNRS/Ecole Polytechnique, 91128 Palaiseau
Cedex, France
| |
Collapse
|
28
|
RAFT for the Control of Monomer Sequence Distribution – Single Unit Monomer Insertion (SUMI) into Dithiobenzoate RAFT Agents. ACTA ACUST UNITED AC 2014. [DOI: 10.1021/bk-2014-1170.ch009] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
|
29
|
Fujii S, Konishi T, Matsumoto Y, Yamaoka Y, Takasu K, Yamada KI. Radical Aminomethylation of Imines. J Org Chem 2014; 79:8128-33. [DOI: 10.1021/jo501332j] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Shintaro Fujii
- Graduate School of Pharmaceutical
Sciences, Kyoto University, Yoshida, Sakyo-ku, Kyoto 606-8501, Japan
| | - Takehito Konishi
- Graduate School of Pharmaceutical
Sciences, Kyoto University, Yoshida, Sakyo-ku, Kyoto 606-8501, Japan
| | - Yusuke Matsumoto
- Graduate School of Pharmaceutical
Sciences, Kyoto University, Yoshida, Sakyo-ku, Kyoto 606-8501, Japan
| | - Yousuke Yamaoka
- Graduate School of Pharmaceutical
Sciences, Kyoto University, Yoshida, Sakyo-ku, Kyoto 606-8501, Japan
| | - Kiyosei Takasu
- Graduate School of Pharmaceutical
Sciences, Kyoto University, Yoshida, Sakyo-ku, Kyoto 606-8501, Japan
| | - Ken-ichi Yamada
- Graduate School of Pharmaceutical
Sciences, Kyoto University, Yoshida, Sakyo-ku, Kyoto 606-8501, Japan
| |
Collapse
|
30
|
Quiclet-Sire B, Yanagisawa Y, Zard SZ. A direct, versatile route to functionalized trialkoxysilanes. Chem Commun (Camb) 2014; 50:2324-6. [DOI: 10.1039/c3cc48570f] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
31
|
Poittevin C, Liautard V, Beniazza R, Robert F, Landais Y. Free-Radical Carbo-alkenylation of Enamides and Ene-carbamates. Org Lett 2013; 15:2814-7. [DOI: 10.1021/ol401147w] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Clément Poittevin
- Institut des Sciences Moléculaires, Université de Bordeaux, UMR-CNRS 5255, 351, cours de la libération, 33405 Talence Cedex, France
| | - Virginie Liautard
- Institut des Sciences Moléculaires, Université de Bordeaux, UMR-CNRS 5255, 351, cours de la libération, 33405 Talence Cedex, France
| | - Redouane Beniazza
- Institut des Sciences Moléculaires, Université de Bordeaux, UMR-CNRS 5255, 351, cours de la libération, 33405 Talence Cedex, France
| | - Frédéric Robert
- Institut des Sciences Moléculaires, Université de Bordeaux, UMR-CNRS 5255, 351, cours de la libération, 33405 Talence Cedex, France
| | - Yannick Landais
- Institut des Sciences Moléculaires, Université de Bordeaux, UMR-CNRS 5255, 351, cours de la libération, 33405 Talence Cedex, France
| |
Collapse
|
32
|
Huang Z, Xu J. Efficient synthesis of N-protected 1-substituted homotaurines from a xanthate and olefins. Tetrahedron 2013. [DOI: 10.1016/j.tet.2012.11.074] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
|
33
|
Zard SZ. Some intriguing mechanistic aspects of the radical chemistry of xanthates. J PHYS ORG CHEM 2012. [DOI: 10.1002/poc.2976] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Samir Z. Zard
- Ecole Polytechnique; Laboratoire de Synthèse Organique, UMR 7652; 91128; Palaiseau; France
| |
Collapse
|
34
|
Affiliation(s)
- Daniel J. Keddie
- CSIRO Materials Science and Engineering, Bag 10, Clayton South, Victoria, Australia
| | - Graeme Moad
- CSIRO Materials Science and Engineering, Bag 10, Clayton South, Victoria, Australia
| | - Ezio Rizzardo
- CSIRO Materials Science and Engineering, Bag 10, Clayton South, Victoria, Australia
| | - San H. Thang
- CSIRO Materials Science and Engineering, Bag 10, Clayton South, Victoria, Australia
| |
Collapse
|
35
|
|
36
|
Ham MK, HoYouk J, Kwon YK, Kwark YJ. Photoinitiated RAFT polymerization of vinyl acetate. ACTA ACUST UNITED AC 2012. [DOI: 10.1002/pola.26014] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
37
|
Maury J, Mouysset D, Feray L, Marque SRA, Siri D, Bertrand MP. Aminomethylation of Michael acceptors: complementary radical and polar approaches mediated by dialkylzincs. Chemistry 2012; 18:3241-7. [PMID: 22328494 DOI: 10.1002/chem.201102366] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2011] [Revised: 11/14/2011] [Indexed: 11/10/2022]
Abstract
Phtalimidomethyl iodide and substituted maleimidomethyl iodide were used as radical precursors in dialkylzinc-mediated radical addition to diethyl fumarate. The reactions led stereoselectively to functionalized pyrrolizidines. The radical mechanism was supported by spin-trapping experiments and rationalized by theoretical calculations. Radical additions, on the one hand, and carbozincation followed by transmetalation with copper(I), on the other, were shown to be complementary methods to achieve the formal aminomethylation of activated unsaturated compounds.
Collapse
Affiliation(s)
- Julien Maury
- Institut de Chimie Radicalaire, UMR 7273, Faculté des Sciences et Techniques de Saint-Jérôme, Avenue Normandie-Niemen, Aix-Marseille Université, 13397 Marseille Cedex 20, France
| | | | | | | | | | | |
Collapse
|
38
|
Houshyar S, Keddie DJ, Moad G, Mulder RJ, Saubern S, Tsanaktsidis J. The scope for synthesis of macro-RAFT agents by sequential insertion of single monomer units. Polym Chem 2012. [DOI: 10.1039/c2py00529h] [Citation(s) in RCA: 106] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
|
39
|
|
40
|
Affiliation(s)
- Douglass F Taber
- Department of Chemistry and Biochemistry, University of Delaware, Newark, DE 19716, USA
| | | |
Collapse
|
41
|
Taniguchi T, Zaimoku H, Ishibashi H. A Mild Oxidative Aryl Radical Addition into Alkenes by Aerobic Oxidation of Arylhydrazines. Chemistry 2011; 17:4307-12. [DOI: 10.1002/chem.201003060] [Citation(s) in RCA: 97] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2010] [Indexed: 11/07/2022]
|
42
|
Chen M, Häussler M, Moad G, Rizzardo E. Block copolymers containing organic semiconductor segments by RAFT polymerization. Org Biomol Chem 2011; 9:6111-9. [DOI: 10.1039/c1ob05276d] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
|
43
|
|
44
|
|
45
|
Taniguchi T, Goto N, Nishibata A, Ishibashi H. Iron-Catalyzed Redox Radical Cyclizations of 1,6-Dienes and Enynes. Org Lett 2009; 12:112-5. [DOI: 10.1021/ol902562j] [Citation(s) in RCA: 87] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Tsuyoshi Taniguchi
- School of Pharmaceutical Sciences, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan
| | - Naoya Goto
- School of Pharmaceutical Sciences, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan
| | - Asami Nishibata
- School of Pharmaceutical Sciences, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan
| | - Hiroyuki Ishibashi
- School of Pharmaceutical Sciences, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan
| |
Collapse
|
46
|
Taniguchi T, Fujii T, Idota A, Ishibashi H. Reductive Addition of the Benzenethiyl Radical to Alkynes by Amine-Mediated Single Electron Transfer Reaction to Diphenyl Disulfide. Org Lett 2009; 11:3298-301. [DOI: 10.1021/ol901084k] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Tsuyoshi Taniguchi
- School of Pharmaceutical Sciences, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan
| | - Tatsuya Fujii
- School of Pharmaceutical Sciences, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan
| | - Atsushi Idota
- School of Pharmaceutical Sciences, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan
| | - Hiroyuki Ishibashi
- School of Pharmaceutical Sciences, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan
| |
Collapse
|
47
|
Lebreux F, Quiclet-Sire B, Zard SZ. Radical Arylaminomethylation of Unactivated Alkenes. Org Lett 2009; 11:2844-7. [DOI: 10.1021/ol901055j] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Frédéric Lebreux
- Laboratoire de Synthèse Organique, CNRS UMR 7652, Ecole Polytechnique, 91128 Palaiseau Cedex (France)
| | - Béatrice Quiclet-Sire
- Laboratoire de Synthèse Organique, CNRS UMR 7652, Ecole Polytechnique, 91128 Palaiseau Cedex (France)
| | - Samir Z. Zard
- Laboratoire de Synthèse Organique, CNRS UMR 7652, Ecole Polytechnique, 91128 Palaiseau Cedex (France)
| |
Collapse
|
48
|
A Flexible Radical-Based Approach to TMS-Substituted Propargyl Alcohols and to 2,3-Allenols. Org Lett 2009; 11:2868-71. [DOI: 10.1021/ol900739x] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
49
|
Yamada KI, Nakano M, Maekawa M, Akindele T, Tomioka K. Tin-Free Radical Addition of Acyloxymethyl to Imines. Org Lett 2008; 10:3805-8. [DOI: 10.1021/ol8014978] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ken-ichi Yamada
- Graduate School of Pharmaceutical Sciences, Kyoto University, Yoshida, Sakyo-ku, Kyoto 606-8501, Japan
| | - Mayu Nakano
- Graduate School of Pharmaceutical Sciences, Kyoto University, Yoshida, Sakyo-ku, Kyoto 606-8501, Japan
| | - Masaru Maekawa
- Graduate School of Pharmaceutical Sciences, Kyoto University, Yoshida, Sakyo-ku, Kyoto 606-8501, Japan
| | - Tito Akindele
- Graduate School of Pharmaceutical Sciences, Kyoto University, Yoshida, Sakyo-ku, Kyoto 606-8501, Japan
| | - Kiyoshi Tomioka
- Graduate School of Pharmaceutical Sciences, Kyoto University, Yoshida, Sakyo-ku, Kyoto 606-8501, Japan
| |
Collapse
|