1
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Čamdžić L, Stache EE. Controlled Radical Polymerization of Acrylates and Isocyanides Installs Degradable Functionality into Novel Copolymers. J Am Chem Soc 2023; 145:20311-20318. [PMID: 37669233 DOI: 10.1021/jacs.3c04595] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/07/2023]
Abstract
Installing ketones into a polymer backbone is a known method for introducing photodegradability into polymers; however, most current methods are limited to ethylene-carbon monoxide copolymerization. Here we use isocyanides in place of carbon monoxide in a copolymerization strategy to access degradable nonalternating poly(ketones) that either maintain or enhance the thermal properties. A cobalt-mediated radical polymerization of acrylates and isocyanides synthesizes nonalternating poly(acrylate-co-isocyanide) copolymers with tunable incorporation using monomer feed ratios. The kinetic product of the polymerization is a dynamic β-imine ester that tautomerizes to the β-enamine ester. Hydrolysis of this copolymer affords a third copolymer microstructure─the elusive nonalternating poly(ketone)─from a single copolymerization strategy. Analysis of the copolymer properties demonstrates tunable thermal properties with the degree of incorporation. Finally, we show that poly(acrylate-co-isocyanide) and poly(acrylate-co-ketone) are photodegradable with 390 nm light, enabling chain cleavage.
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Affiliation(s)
- Lejla Čamdžić
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, United States
| | - Erin E Stache
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, United States
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2
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Russo C, Brunelli F, Cesare Tron G, Giustiniano M. Isocyanide-Based Multicomponent Reactions Promoted by Visible Light Photoredox Catalysis. Chemistry 2023; 29:e202203150. [PMID: 36458647 DOI: 10.1002/chem.202203150] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2022] [Revised: 12/01/2022] [Accepted: 12/01/2022] [Indexed: 12/03/2022]
Abstract
Isocyanide-based multicomponent reactions claim a one century-old history of flourishing developments. On the other hand, the enormous impact of recent progresses in visible light photocatalysis has boosted the identification of new straightforward and green approaches to both new and known chemical entities. In this context, the application of visible light photocatalytic conditions to multicomponent processes has been promoting key stimulating advancements. Spanning from radical-polar crossover pathways, to photoinduced and self-catalyzed transformations, to reactions involving the generation of imidoyl radical species, the present literature analysis would provide a general and critical overview about the potentialities and challenges of exploiting isocyanides in visible light photocatalytic multicomponent reactions.
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Affiliation(s)
- Camilla Russo
- Department of Pharmacy, University of Naples Federico II, via D. Montesano 49, 80131, Napoli, Italy
| | - Francesca Brunelli
- Department of Drug Science, University of Piemonte Orientale, Largo Donegani 2, 28100, Novara, Italy
| | - Gian Cesare Tron
- Department of Drug Science, University of Piemonte Orientale, Largo Donegani 2, 28100, Novara, Italy
| | - Mariateresa Giustiniano
- Department of Pharmacy, University of Naples Federico II, via D. Montesano 49, 80131, Napoli, Italy
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3
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Ishida K, Kusama H. Generation of (amino)(boryloxy)carbenes from carbamoylboranes and their coupling reaction with aldehydes. Chem Commun (Camb) 2022; 58:1625-1628. [PMID: 35022628 DOI: 10.1039/d1cc06377d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Carbamoylboranes were found to react with various aldehydes under heating conditions to give α-hydroxycarboxamides in good yields. A DFT study supports the mechanism, which involves thermally generated (amino)(boryloxy)carbene intermediates. To our knowledge, this is the first report on the generation of (amino)(boryloxy)carbene intermediates from carbamoylboranes and its application to carbon-carbon bond-forming reactions.
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Affiliation(s)
- Kento Ishida
- Department of Chemistry, Faculty of Science, Gakushuin University, 1-5-1 Mejiro, Toshima-ku, Tokyo 171-8588, Japan.
| | - Hiroyuki Kusama
- Department of Chemistry, Faculty of Science, Gakushuin University, 1-5-1 Mejiro, Toshima-ku, Tokyo 171-8588, Japan.
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4
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Holownia A, Apte CN, Yudin AK. Acyl metalloids: conformity and deviation from carbonyl reactivity. Chem Sci 2021; 12:5346-5360. [PMID: 34163766 PMCID: PMC8179550 DOI: 10.1039/d1sc00077b] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2021] [Accepted: 03/09/2021] [Indexed: 01/13/2023] Open
Abstract
Once considered as mere curiosities, acyl metalloids are now recognized for their utility in enabling chemical synthesis. This perspective considers the reactivity displayed by acylboron, -silicon, -germanium, and tellurium species. By highlighting the role of these species in various transformations, we demonstrate how differences between the comprising elements result in varied reaction outcomes. While acylboron compounds are primarily used in polar transformations, germanium and tellurium species have found utility as radical precursors. Applications of acylsilanes are comparatively more diverse, owing to the possibility to access both radical and polar chemistry.
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Affiliation(s)
- Aleksandra Holownia
- Davenport Laboratories, Department of Chemistry, University of Toronto 80 St. George St. Toronto Ontario M5S 3H6 Canada
| | - Chirag N Apte
- Davenport Laboratories, Department of Chemistry, University of Toronto 80 St. George St. Toronto Ontario M5S 3H6 Canada
| | - Andrei K Yudin
- Davenport Laboratories, Department of Chemistry, University of Toronto 80 St. George St. Toronto Ontario M5S 3H6 Canada
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5
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Keul F, Mardyukov A, Schreiner PR. Spectroscopic identification of the phenyltelluryl radical and its reactivity toward molecular oxygen. Phys Chem Chem Phys 2019; 21:25797-25801. [PMID: 31728465 DOI: 10.1039/c9cp05112k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The phenyltelluryl radical was prepared by high-vacuum flash pyrolysis of diphenyl ditelluride and was chacracterized by matrix isolation IR and UV/Vis spectroscopy. After doping the matrix with molecular oxygen and allowing bimolecular reactions, the hitherto unkown phenyltelluro peroxy radical formed and was identified via IR spectroscopy. Irradiation with light at λ = 436 nm leads to isomerization to the thermodynamically more stable novel phenyltelluroyl radical. All experimental findings agree well with density functional theory (UB3LYP/Def2QZVPP and UM06-2X/Def2QZVPP) computations.
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Affiliation(s)
- Felix Keul
- Institute of Organic Chemistry, Justus Liebig University, Heinrich-Buff-Ring 17, 35392 Giessen, Germany.
| | - Artur Mardyukov
- Institute of Organic Chemistry, Justus Liebig University, Heinrich-Buff-Ring 17, 35392 Giessen, Germany.
| | - Peter R Schreiner
- Institute of Organic Chemistry, Justus Liebig University, Heinrich-Buff-Ring 17, 35392 Giessen, Germany.
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6
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Reaction of arylhydrazines with diaryl ditellurides in the air: Insight into bimolecular homolytic substitution on tellurium via Aryl-Te bond cleavage. HETEROATOM CHEMISTRY 2019. [DOI: 10.1002/hc.21471] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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7
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Gomes GDP, Loginova Y, Vatsadze SZ, Alabugin IV. Isonitriles as Stereoelectronic Chameleons: The Donor-Acceptor Dichotomy in Radical Additions. J Am Chem Soc 2018; 140:14272-14288. [PMID: 30270623 DOI: 10.1021/jacs.8b08513] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Radical addition to isonitriles (isocyanides) starts and continues all the way to the transition state (TS) mostly as a simple addition to a polarized π-bond. Only after the TS has been passed, the spin density moves to the α-carbon to form the imidoyl radical, the hallmark intermediate of the 1,1-addition-mediated cascades. Addition of alkyl, aryl, heteroatom-substituted, and heteroatom-centered radicals reveals a number of electronic, supramolecular, and conformational effects potentially useful for the practical control of isonitrile-mediated radical cascade transformations. Addition of alkyl radicals reveals two stereoelectronic preferences. First, the radical attack aligns the incipient C···C bond with the aromatic π-system. Second, one of the C-H/C-C bonds at the radical carbon eclipses the isonitrile N-C bond. Combination of these stereoelectronic preferences with entropic penalty explains why the least exergonic reaction (addition of the t-Bu radical) is also the fastest. Heteroatomic radicals reveal further unusual trends. In particular, the Sn radical addition to the PhNC is much faster than addition of the other group IV radicals, despite forming the weakest bond. This combination of kinetic and thermodynamic properties is ideal for applications in control of radical reactivity via dynamic covalent chemistry and may be responsible for the historically broad utility of Sn radicals ("the tyranny of tin"). In addition to polarity and low steric hindrance, radical attack at the relatively strong π-bond of isonitriles is assisted by "chameleonic" supramolecular interactions of the radical center with both the isonitrile π*-system and lone pair. These interactions are yet another manifestation of supramolecular control of radical chemistry.
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Affiliation(s)
- Gabriel Dos Passos Gomes
- Department of Chemistry and Biochemistry , Florida State University , Tallahassee , Florida 32309 , United States
| | - Yulia Loginova
- Department of Organic Chemistry, Faculty of Chemistry , Lomonosov Moscow State University , 1-3 Leninskiye Gory , Moscow 119991 , Russia
| | - Sergey Z Vatsadze
- Department of Organic Chemistry, Faculty of Chemistry , Lomonosov Moscow State University , 1-3 Leninskiye Gory , Moscow 119991 , Russia
| | - Igor V Alabugin
- Department of Chemistry and Biochemistry , Florida State University , Tallahassee , Florida 32309 , United States
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8
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Li J, Caiuby CAD, Paixão MW, Li CJ. Synthesis of 6-Trifluoromethylphenanthridines through Radical Trifluoromethylation of Isocyanides with Sodium Triflinate under Visible Light. European J Org Chem 2018. [DOI: 10.1002/ejoc.201701487] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Jianbin Li
- Department of Chemistry; McGill University; 801 Sherbrooke Street West QC H3A 0B8 Montreal Canada
| | - Clarice A. D. Caiuby
- Department of Chemistry; McGill University; 801 Sherbrooke Street West QC H3A 0B8 Montreal Canada
- Center of Excellence for Research in Sustainable Chemistry (CERSusChem); Department of Chemistry; Federal University of São Carlos UFSCar; Rodovia Washington Luís, km 235, SP-310 13565-905 São Carlos São Paulo Brazil
| | - Márcio W. Paixão
- Center of Excellence for Research in Sustainable Chemistry (CERSusChem); Department of Chemistry; Federal University of São Carlos UFSCar; Rodovia Washington Luís, km 235, SP-310 13565-905 São Carlos São Paulo Brazil
| | - Chao-Jun Li
- Department of Chemistry; McGill University; 801 Sherbrooke Street West QC H3A 0B8 Montreal Canada
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9
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Xu Y, Chen H, Li W, Xie Q, Yu L, Shao L. Microwave-Assisted Radical Insertion/Cyclization of Vinyl Isocyanides for the Synthesis of Multi-Substituted Isoquinolines. ChemistrySelect 2017. [DOI: 10.1002/slct.201701896] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Yulong Xu
- School of Pharmacy; Fudan University; 826 Zhangheng Road, Zhangjiang Hi-tech Park, Pudong Shanghai 201203 China
| | - Hao Chen
- School of Pharmacy; Fudan University; 826 Zhangheng Road, Zhangjiang Hi-tech Park, Pudong Shanghai 201203 China
| | - Wei Li
- School of Pharmacy; Fudan University; 826 Zhangheng Road, Zhangjiang Hi-tech Park, Pudong Shanghai 201203 China
| | - Qiong Xie
- School of Pharmacy; Fudan University; 826 Zhangheng Road, Zhangjiang Hi-tech Park, Pudong Shanghai 201203 China
| | - Linqian Yu
- School of Pharmacy; Fudan University; 826 Zhangheng Road, Zhangjiang Hi-tech Park, Pudong Shanghai 201203 China
| | - Liming Shao
- School of Pharmacy; Fudan University; 826 Zhangheng Road, Zhangjiang Hi-tech Park, Pudong Shanghai 201203 China
- State Key Laboratory of Medical Neurobiology; Fudan University; 138 Yixueyuan Road Shanghai 200032 China
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10
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Zhang L, Xiao P, Guan X, Huang Z, Zhang J, Bi X. Silver-mediated radical coupling reaction of isocyanides and alcohols/phenols in the presence of water: unprecedented hydration and radical coupling reaction sequence. Org Biomol Chem 2017; 15:1580-1583. [DOI: 10.1039/c7ob00019g] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
The first radical coupling of isocyanides and alcohols/phenols promoted by silver in the presence of water is reported.
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Affiliation(s)
- Lin Zhang
- Department of Chemistry
- Northeast Normal University
- Changchun 130024
- China
| | - Pin Xiao
- Department of Chemistry
- Northeast Normal University
- Changchun 130024
- China
| | - Xiaoxue Guan
- Department of Chemistry
- Northeast Normal University
- Changchun 130024
- China
| | - Zhouliang Huang
- Department of Life Sciences
- Jilin University
- Changchun 130012
- China
| | - Jingping Zhang
- Department of Chemistry
- Northeast Normal University
- Changchun 130024
- China
| | - Xihe Bi
- Department of Chemistry
- Northeast Normal University
- Changchun 130024
- China
- State Key Laboratory of Elemento-Organic Chemistry
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11
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Leifert D, Studer A. Iodierte (Perfluor)alkylchinoxaline über radikalische Atom-Transfer-Additionsreaktionen mit ortho
-Diisocyanarenen als Radikalakzeptoren. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201606023] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Dirk Leifert
- 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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12
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Leifert D, Studer A. Iodinated (Perfluoro)alkyl Quinoxalines by Atom Transfer Radical Addition Using ortho
-Diisocyanoarenes as Radical Acceptors. Angew Chem Int Ed Engl 2016; 55:11660-3. [DOI: 10.1002/anie.201606023] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2016] [Indexed: 02/02/2023]
Affiliation(s)
- Dirk Leifert
- Organisch-Chemisches Institut; Westfälische Wilhelms-Universität; Corrensstrasse 40 48149 Münster Germany
| | - Armido Studer
- Organisch-Chemisches Institut; Westfälische Wilhelms-Universität; Corrensstrasse 40 48149 Münster Germany
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13
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Yuan YC, Liu HL, Hu XB, Wei Y, Shi M. Visible-Light-Induced Trifluoromethylation of Isonitrile-Substituted Methylenecyclopropanes: Facile Access to 6-(Trifluoromethyl)-7,8-Dihydrobenzo[k]phenanthridine Derivatives. Chemistry 2016; 22:13059-63. [PMID: 27433794 DOI: 10.1002/chem.201602920] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2016] [Indexed: 11/06/2022]
Abstract
A new visible-light-induced trifluoromethylation of isonitrile-substituted methylenecyclopropanes is developed. A range of substituted 6-(trifluoromethyl)-7,8-dihydrobenzo[k]phenanthridine derivatives are readily furnished by this newly developed tandem reaction with moderate to good yields. This reaction allows the direct formation of two six-membered rings and three new C-C bonds, including the C-CF3 bond, under visible light irradiation.
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Affiliation(s)
- Yu-Chao Yuan
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, P.R. China
| | - Hou-Lu Liu
- Department of Chemistry, Shanghai University, 99 Shangda Road, Shanghai, 200444, P.R. China
| | - Xu-Bo Hu
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, East China University of Science and Technology, Meilong Road No. 130, Shanghai, 200237, P.R. China
| | - Yin Wei
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, P.R. China.
| | - Min Shi
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, P.R. China. .,Key Laboratory for Advanced Materials and Institute of Fine Chemicals, East China University of Science and Technology, Meilong Road No. 130, Shanghai, 200237, P.R. China.
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14
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Chen M, Zhong M, Johnson JA. Light-Controlled Radical Polymerization: Mechanisms, Methods, and Applications. Chem Rev 2016; 116:10167-211. [PMID: 26978484 DOI: 10.1021/acs.chemrev.5b00671] [Citation(s) in RCA: 688] [Impact Index Per Article: 86.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
The use of light to mediate controlled radical polymerization has emerged as a powerful strategy for rational polymer synthesis and advanced materials fabrication. This review provides a comprehensive survey of photocontrolled, living radical polymerizations (photo-CRPs). From the perspective of mechanism, all known photo-CRPs are divided into either (1) intramolecular photochemical processes or (2) photoredox processes. Within these mechanistic regimes, a large number of methods are summarized and further classified into subcategories based on the specific reagents, catalysts, etc., involved. To provide a clear understanding of each subcategory, reaction mechanisms are discussed. In addition, applications of photo-CRP reported so far, which include surface fabrication, particle preparation, photoresponsive gel design, and continuous flow technology, are summarized. We hope this review will not only provide informative knowledge to researchers in this field but also stimulate new ideas and applications to further advance photocontrolled reactions.
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Affiliation(s)
- Mao Chen
- Department of Chemistry and ‡Department of Chemical Engineering, Massachusetts Institute of Technology , 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Mingjiang Zhong
- Department of Chemistry and ‡Department of Chemical Engineering, Massachusetts Institute of Technology , 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Jeremiah A Johnson
- Department of Chemistry and ‡Department of Chemical Engineering, Massachusetts Institute of Technology , 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
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15
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Wang S, Jia WL, Wang L, Liu Q. Preparation of 6-Difluoromethylphosphonated Phenanthridines by Visible-Light-Driven Radical Cyclization of 2-Isocyanobiphenyls. European J Org Chem 2015. [DOI: 10.1002/ejoc.201500988] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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16
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Shiro D, Fujiwara SI, Tsuda S, Iwasaki T, Kuniyasu H, Kambe N. Palladium-catalyzed Insertion Reactions of Isocyanides into Thiocarbamates and Selenocarbamates. CHEM LETT 2015. [DOI: 10.1246/cl.141141] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Daisuke Shiro
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University
| | | | - Susumu Tsuda
- Department of Chemistry, Osaka Dental University
| | - Takanori Iwasaki
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University
| | - Hitoshi Kuniyasu
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University
| | - Nobuaki Kambe
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University
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17
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Nagatomo M, Kamimura D, Matsui Y, Masuda K, Inoue M. Et 3B-mediated two- and three-component coupling reactions via radical decarbonylation of α-alkoxyacyl tellurides: single-step construction of densely oxygenated carboskeletons. Chem Sci 2015; 6:2765-2769. [PMID: 29403632 PMCID: PMC5763990 DOI: 10.1039/c5sc00457h] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2015] [Accepted: 03/05/2015] [Indexed: 11/21/2022] Open
Abstract
We devised new radical-based two- and three-component coupling reactions of sugar derivatives, and realized one-step construction of contiguously substituted polyol structures.
The single-step construction of various densely oxygenated carboskeletons was achieved by radical-based two- and three-component coupling reactions of sugar derivatives, without the need for light or heat. Et3B/O2-mediated decarbonylation readily converted α-alkoxyacyl tellurides to α-alkoxy carbon radicals, which intermolecularly added to glyoxylic oxime ether or enones to provide the two-component adducts. Furthermore, the three-component adducts were produced by an intermolecular aldol reaction between the aldehyde and the boron enolates generated by capture of the two-component radical intermediates by Et3B. This powerful coupling method serves as a novel strategy for the convergent synthesis of polyol natural products.
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Affiliation(s)
- Masanori Nagatomo
- Graduate School of Pharmaceutical Sciences , The University of Tokyo , Hongo, Bunkyo-ku , Tokyo 113-0033 , Japan .
| | - Daigo Kamimura
- Graduate School of Pharmaceutical Sciences , The University of Tokyo , Hongo, Bunkyo-ku , Tokyo 113-0033 , Japan .
| | - Yuki Matsui
- Graduate School of Pharmaceutical Sciences , The University of Tokyo , Hongo, Bunkyo-ku , Tokyo 113-0033 , Japan .
| | - Keisuke Masuda
- Graduate School of Pharmaceutical Sciences , The University of Tokyo , Hongo, Bunkyo-ku , Tokyo 113-0033 , Japan .
| | - Masayuki Inoue
- Graduate School of Pharmaceutical Sciences , The University of Tokyo , Hongo, Bunkyo-ku , Tokyo 113-0033 , Japan .
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18
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NAKAGAWA H, YAMAGO S, ISHIHARA K, YUSA SI. Preparation of Biocompatible Poly(2-methacryloyloxyethyl phosphorylcholine) (PMPC) via Organotellulium-Medicated Radical Polymerization (TERP). KOBUNSHI RONBUNSHU 2015. [DOI: 10.1295/koron.2014-0084] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Hinari NAKAGAWA
- Department of Materials Science and Chemistry, University of Hyogo
| | | | | | - Shin-ichi YUSA
- Department of Materials Science and Chemistry, University of Hyogo
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19
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Nagatomo M, Nishiyama H, Fujino H, Inoue M. Decarbonylative Radical Coupling of α-Aminoacyl Tellurides: Single-Step Preparation of γ-Amino and α,β-Diamino Acids and Rapid Synthesis of Gabapentin and Manzacidin A. Angew Chem Int Ed Engl 2014; 54:1537-41. [DOI: 10.1002/anie.201410186] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2014] [Indexed: 11/09/2022]
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20
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Nagatomo M, Nishiyama H, Fujino H, Inoue M. Decarbonylative Radical Coupling of α-Aminoacyl Tellurides: Single-Step Preparation of γ-Amino and α,β-Diamino Acids and Rapid Synthesis of Gabapentin and Manzacidin A. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201410186] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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21
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Yang XL, Chen F, Zhou NN, Yu W, Han B. Synthesis of Isoxazoline-Functionalized Phenanthridines via Iminoxyl Radical-Participated Cascade Sequence. Org Lett 2014; 16:6476-9. [DOI: 10.1021/ol503335k] [Citation(s) in RCA: 80] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Xiu-Long Yang
- State Key Laboratory
of Applied
Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000 P. R. China
| | - Fei Chen
- State Key Laboratory
of Applied
Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000 P. R. China
| | - Neng-Neng Zhou
- State Key Laboratory
of Applied
Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000 P. R. China
| | - Wei Yu
- State Key Laboratory
of Applied
Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000 P. R. China
| | - Bing Han
- State Key Laboratory
of Applied
Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000 P. R. China
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22
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Zhang B, Studer A. 6-Perfluoroalkylated Phenanthridines via Radical Perfluoroalkylation of Isonitriles. Org Lett 2014; 16:3990-3. [DOI: 10.1021/ol5018195] [Citation(s) in RCA: 118] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Bo Zhang
- Institute of Organic Chemistry, Westfälische Wilhems-University, Corrensstraße 40, 48149 Münster, Germany
| | - Armido Studer
- Institute of Organic Chemistry, Westfälische Wilhems-University, Corrensstraße 40, 48149 Münster, Germany
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23
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Wang H, Yu Y, Hong X, Xu B. Mn(ii)/O2-promoted oxidative annulation of vinyl isocyanides with boronic acids: synthesis of multi-substituted isoquinolines. Chem Commun (Camb) 2014; 50:13485-8. [DOI: 10.1039/c4cc06427e] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
An efficient manganese(ii)/O2-promoted oxidative radical cascade reaction was developed for the modular synthesis of multi-substituted isoquinolines from easily accessible vinyl isocyanides and boronic acids.
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Affiliation(s)
- Hao Wang
- Department of Chemistry
- Innovative Drug Research Center
- Shanghai University
- Shanghai 200444, China
| | - Yang Yu
- Department of Chemistry
- Innovative Drug Research Center
- Shanghai University
- Shanghai 200444, China
| | - Xiaohu Hong
- Department of Chemistry
- Innovative Drug Research Center
- Shanghai University
- Shanghai 200444, China
| | - Bin Xu
- Department of Chemistry
- Innovative Drug Research Center
- Shanghai University
- Shanghai 200444, China
- State Key Laboratory of Organometallic Chemistry
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Zhang B, Studer A. 1-Trifluoromethylated isoquinolines via radical trifluoromethylation of isonitriles. Org Biomol Chem 2014; 12:9895-8. [DOI: 10.1039/c4ob02145b] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
A simple and efficient approach to biologically important 1-trifluoroalkylated isoquinolines starting with readily prepared β-aryl-α-isocyano-acrylates and Rf-I(iii)-reagents (Rf = CF3, C2F5, C3F7) is described.
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Affiliation(s)
- Bo Zhang
- Westfälische Wilhems-University
- Institute of Organic Chemistry
- Münster, Germany
| | - Armido Studer
- Westfälische Wilhems-University
- Institute of Organic Chemistry
- Münster, Germany
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25
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Zhang B, Daniliuc CG, Studer A. 6-Phosphorylated Phenanthridines from 2-Isocyanobiphenyls via Radical C–P and C–C Bond Formation. Org Lett 2013; 16:250-3. [DOI: 10.1021/ol403256e] [Citation(s) in RCA: 215] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Bo Zhang
- Institute
of Organic Chemistry, Westfälische Wilhems-University, Corrensstraße
40, 48149 Münster, Germany
| | | | - Armido Studer
- Institute
of Organic Chemistry, Westfälische Wilhems-University, Corrensstraße
40, 48149 Münster, Germany
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Kamimura D, Urabe D, Nagatomo M, Inoue M. Et3B-Mediated Radical-Polar Crossover Reaction for Single-Step Coupling of O,Te-Acetal, α,β-Unsaturated Ketones, and Aldehydes/Ketones. Org Lett 2013; 15:5122-5. [DOI: 10.1021/ol402563v] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Daigo Kamimura
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Daisuke Urabe
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Masanori Nagatomo
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Masayuki Inoue
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
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27
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Zhang B, Mück-Lichtenfeld C, Daniliuc CG, Studer A. 6-Trifluoromethyl-Phenanthridines through Radical Trifluoromethylation of Isonitriles. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201306082] [Citation(s) in RCA: 80] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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28
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Zhang B, Mück-Lichtenfeld C, Daniliuc CG, Studer A. 6-Trifluoromethyl-Phenanthridines through Radical Trifluoromethylation of Isonitriles. Angew Chem Int Ed Engl 2013; 52:10792-5. [DOI: 10.1002/anie.201306082] [Citation(s) in RCA: 295] [Impact Index Per Article: 26.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2013] [Indexed: 11/05/2022]
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29
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Singh P, Chauhan AK, Butcher RJ, Duthie A. Electrophilic substitution reactions of 2-acetylpyridine, 2-acetylpyrrole & cyclohexanone: Isolation and molecular structures of novel organotellurium(IV) chlorides. J Organomet Chem 2013. [DOI: 10.1016/j.jorganchem.2013.01.029] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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30
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Mitamura T, Iwata K, Ogawa A. Photoinduced Intramolecular Cyclization of o-Ethenylaryl Isocyanides with Organic Disulfides Mediated by Diphenyl Ditelluride. J Org Chem 2011; 76:3880-7. [DOI: 10.1021/jo200299d] [Citation(s) in RCA: 75] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Takenori Mitamura
- Department of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University, 1-1 Gakuen-cho, Nakaku, Sakai, Osaka 599-8531, Japan
| | - Kimiyo Iwata
- Department of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University, 1-1 Gakuen-cho, Nakaku, Sakai, Osaka 599-8531, Japan
| | - Akiya Ogawa
- Department of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University, 1-1 Gakuen-cho, Nakaku, Sakai, Osaka 599-8531, Japan
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31
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Mishima E, Yamada T, Watanabe H, Yamago S. Precision Synthesis of Hybrid Block Copolymers by Organotellurium-Mediated Successive Living Radical and Cationic Polymerizations. Chem Asian J 2010; 6:445-51. [DOI: 10.1002/asia.201000402] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2010] [Indexed: 11/07/2022]
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32
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Yamago S. Precision Polymer Synthesis by Degenerative Transfer Controlled/Living Radical Polymerization Using Organotellurium, Organostibine, and Organobismuthine Chain-Transfer Agents. Chem Rev 2009; 109:5051-68. [DOI: 10.1021/cr9001269] [Citation(s) in RCA: 369] [Impact Index Per Article: 24.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Shigeru Yamago
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
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33
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Mitamura T, Iwata K, Ogawa A. (PhTe)2-Mediated Intramolecular Radical Cyclization of o-Ethynylaryl Isocyanides Leading to Bistellurated Quinolines upon Visible-Light Irradiation. Org Lett 2009; 11:3422-4. [DOI: 10.1021/ol901267h] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Takenori Mitamura
- Department of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University, Gakuen-cho 1-1, Nakaku, Sakai, Osaka 599-8531, Japan
| | - Kimiyo Iwata
- Department of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University, Gakuen-cho 1-1, Nakaku, Sakai, Osaka 599-8531, Japan
| | - Akiya Ogawa
- Department of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University, Gakuen-cho 1-1, Nakaku, Sakai, Osaka 599-8531, Japan
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34
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Yamago S, Kayahara E, Yamada H. Synthesis of structurally well-controlled ω-vinylidene functionalized poly(alkyl methacrylate)s and polymethacrylonitrile by organotellurium, organostibine, and organobismuthine-mediated living radical polymerizations. REACT FUNCT POLYM 2009. [DOI: 10.1016/j.reactfunctpolym.2009.03.008] [Citation(s) in RCA: 33] [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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35
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Yamago S, Ukai Y, Matsumoto A, Nakamura Y. Organotellurium-Mediated Controlled/Living Radical Polymerization Initiated by Direct C−Te Bond Photolysis. J Am Chem Soc 2009; 131:2100-1. [DOI: 10.1021/ja8099689] [Citation(s) in RCA: 158] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Shigeru Yamago
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan, Division of Molecular Materials Chemistry, Graduate School of Science, Osaka City University, Osaka 558-8585, Japan
| | - Yuu Ukai
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan, Division of Molecular Materials Chemistry, Graduate School of Science, Osaka City University, Osaka 558-8585, Japan
| | - Atsushi Matsumoto
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan, Division of Molecular Materials Chemistry, Graduate School of Science, Osaka City University, Osaka 558-8585, Japan
| | - Yasuyuki Nakamura
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan, Division of Molecular Materials Chemistry, Graduate School of Science, Osaka City University, Osaka 558-8585, Japan
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36
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Yamada T, Mishima E, Ueki K, Yamago S. Phenyltellanyl Triflate (PhTeOTf) as a Powerful Tellurophilic Activator in the Friedel–Crafts Reaction. CHEM LETT 2008. [DOI: 10.1246/cl.2008.650] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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37
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Kayahara E, Yamago S, Kwak Y, Goto A, Fukuda T. Optimization of Organotellurium Transfer Agents for Highly Controlled Living Radical Polymerization. Macromolecules 2008. [DOI: 10.1021/ma7023717] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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38
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Hasanayn F, Nsouli NH, Al-Ayoubi A, Goldman AS. Addition of Alkyl Radicals to Transition-Metal-Coordinated CO: Calculation of the Reaction of [Ru(CO)5] and Related Complexes and Relevance to Alkane Carbonylation. J Am Chem Soc 2007; 130:511-21. [DOI: 10.1021/ja072704f] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Faraj Hasanayn
- Department of Chemistry, The American University of Beirut, Beirut, Lebanon, and Department of Chemistry, Rutgers University, Piscataway, New Jersey 08855
| | - Nadeen H. Nsouli
- Department of Chemistry, The American University of Beirut, Beirut, Lebanon, and Department of Chemistry, Rutgers University, Piscataway, New Jersey 08855
| | - Adnan Al-Ayoubi
- Department of Chemistry, The American University of Beirut, Beirut, Lebanon, and Department of Chemistry, Rutgers University, Piscataway, New Jersey 08855
| | - Alan S. Goldman
- Department of Chemistry, The American University of Beirut, Beirut, Lebanon, and Department of Chemistry, Rutgers University, Piscataway, New Jersey 08855
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39
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Cougnon F, Feray L, Bazin S, Bertrand MP. Evaluation of phenylorganotellurium compounds as radical precursors in dialkylzinc-mediated radical addition to CN double bonds. Tetrahedron 2007. [DOI: 10.1016/j.tet.2007.09.014] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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40
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Photoinduced thiotelluration of isocyanides by using a (PhS)2–(PhTe)2 mixed system, and its application to bisthiolation via radical cyclization. Tetrahedron Lett 2007. [DOI: 10.1016/j.tetlet.2007.06.126] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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41
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Yusa SI, Yamago S, Sugahara M, Morikawa S, Yamamoto T, Morishima Y. Thermo-Responsive Diblock Copolymers of Poly(N-isopropylacrylamide) and Poly(N-vinyl-2-pyrroridone) Synthesized via Organotellurium-Mediated Controlled Radical Polymerization (TERP). Macromolecules 2007. [DOI: 10.1021/ma070769x] [Citation(s) in RCA: 123] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Shin-ichi Yusa
- Department of Materials Science and Chemistry, Graduate School of Engineering, University of Hyogo, 2167 Shosha, Himeji, Hyogo 671-2280, Japan, Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan, and Department of Applied Physics and Chemistry, Graduate School of Engineering, Fukui University of Technology, 6-3-1 Gakuen, Fukui, Fukui 910-8505, Japan
| | - Shigeru Yamago
- Department of Materials Science and Chemistry, Graduate School of Engineering, University of Hyogo, 2167 Shosha, Himeji, Hyogo 671-2280, Japan, Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan, and Department of Applied Physics and Chemistry, Graduate School of Engineering, Fukui University of Technology, 6-3-1 Gakuen, Fukui, Fukui 910-8505, Japan
| | - Makoto Sugahara
- Department of Materials Science and Chemistry, Graduate School of Engineering, University of Hyogo, 2167 Shosha, Himeji, Hyogo 671-2280, Japan, Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan, and Department of Applied Physics and Chemistry, Graduate School of Engineering, Fukui University of Technology, 6-3-1 Gakuen, Fukui, Fukui 910-8505, Japan
| | - Sanae Morikawa
- Department of Materials Science and Chemistry, Graduate School of Engineering, University of Hyogo, 2167 Shosha, Himeji, Hyogo 671-2280, Japan, Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan, and Department of Applied Physics and Chemistry, Graduate School of Engineering, Fukui University of Technology, 6-3-1 Gakuen, Fukui, Fukui 910-8505, Japan
| | - Tohei Yamamoto
- Department of Materials Science and Chemistry, Graduate School of Engineering, University of Hyogo, 2167 Shosha, Himeji, Hyogo 671-2280, Japan, Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan, and Department of Applied Physics and Chemistry, Graduate School of Engineering, Fukui University of Technology, 6-3-1 Gakuen, Fukui, Fukui 910-8505, Japan
| | - Yotaro Morishima
- Department of Materials Science and Chemistry, Graduate School of Engineering, University of Hyogo, 2167 Shosha, Himeji, Hyogo 671-2280, Japan, Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan, and Department of Applied Physics and Chemistry, Graduate School of Engineering, Fukui University of Technology, 6-3-1 Gakuen, Fukui, Fukui 910-8505, Japan
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42
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Yamago S, Iida K, Yoshida JI. Experimental and theoretical studies on formal σ-bond metathesis of silyl tellurides with alkyl halides. J Organomet Chem 2007. [DOI: 10.1016/j.jorganchem.2006.05.066] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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43
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Matsubara H, Ryu I, Schiesser CH. An ab initio and DFT study of some halogen atom transfer reactions from alkyl groups to acyl radical. Org Biomol Chem 2007; 5:3320-4. [PMID: 17912385 DOI: 10.1039/b710449a] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Ab initio calculations using the 6-311G**, cc-pVDZ, and (valence) double-zeta pseudopotential (DZP) basis sets, with (MP2, QCISD, CCSD(T)) and without (HF) the inclusion of electron correlation, and density functional (BHandHLYP, B3LYP) calculations predict that the transition states for the reaction of acetyl radical with several alkyl halides adopt an almost collinear arrangement of attacking and leaving radicals at the halogen atom. Energy barriers (DeltaE(double dagger)) for these halogen transfer reactions of between 89.2 (chlorine transfer from methyl group) and 25.3 kJ mol(-1) (iodine transfer from tert-butyl group) are calculated at the BHandHLYP/DZP level of theory. While the difference in forward and reverse energy barriers for iodine transfer to acetyl radical is predicted to be 15.1 kJ mol(-1) for primary alkyl iodide, these values are calculated to be 6.7 and -4.2 kJ mol(-1) for secondary and tertiary alkyl iodide respectively. These data are in good agreement with available experimental data in that atom transfer radical carbonylation reactions are sluggish with primary alkyl iodides, but proceed smoothly with secondary and tertiary alkyl iodides. These calculations also predict that bromine transfer reactions involving acyl radical are also feasible at moderately high temperature.
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Affiliation(s)
- Hiroshi Matsubara
- Department of Chemistry, Graduate School of Science, Osaka Prefecture University, Sakai, Osaka 599-8531, Japan
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44
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Mutoh Y, Murai T, Yamago S. Telluration of seleno- and chloroiminium salts leading to various telluroamides, and their structure and NMR properties. J Organomet Chem 2007. [DOI: 10.1016/j.jorganchem.2006.03.045] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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45
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Ryu I, Uenoyama Y, Matsubara H. Carbonylative Approaches to α,β-Unsaturated Acyl Radicals and α-Ketenyl Radicals. Their Structure and Applications in Synthesis. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2006. [DOI: 10.1246/bcsj.79.1476] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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46
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Kwak Y, Goto A, Fukuda T, Kobayashi Y, Yamago S. A Systematic Study on Activation Processes in Organotellurium-Mediated Living Radical Polymerizations of Styrene, Methyl Methacrylate, Methyl Acrylate, and Vinyl Acetate. Macromolecules 2006. [DOI: 10.1021/ma060295m] [Citation(s) in RCA: 106] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yungwan Kwak
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan, and Division of Molecular Material Science, Graduate School of Science, Osaka City University, and PREST, Japan Science and Technology Corporation, Osaka 558-8585, Japan
| | - Atsushi Goto
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan, and Division of Molecular Material Science, Graduate School of Science, Osaka City University, and PREST, Japan Science and Technology Corporation, Osaka 558-8585, Japan
| | - Takeshi Fukuda
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan, and Division of Molecular Material Science, Graduate School of Science, Osaka City University, and PREST, Japan Science and Technology Corporation, Osaka 558-8585, Japan
| | - Yu Kobayashi
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan, and Division of Molecular Material Science, Graduate School of Science, Osaka City University, and PREST, Japan Science and Technology Corporation, Osaka 558-8585, Japan
| | - Shigeru Yamago
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan, and Division of Molecular Material Science, Graduate School of Science, Osaka City University, and PREST, Japan Science and Technology Corporation, Osaka 558-8585, Japan
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47
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Tsuchii K, Doi M, Ogawa I, Einaga Y, Ogawa A. Diphenyl Diselenide as a Useful Reagent for Intermolecular Domino Reactions of Various Unsaturated Compounds under Photoirradiation Conditions. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2005. [DOI: 10.1246/bcsj.78.1534] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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48
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49
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Yamago S. Development of organotellurium-mediated and organostibine-mediated living radical polymerization reactions. ACTA ACUST UNITED AC 2005. [DOI: 10.1002/pola.21154] [Citation(s) in RCA: 154] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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50
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Ericsson C, Engman L. Microwave-Assisted Group-Transfer Cyclization of Organotellurium Compounds. J Org Chem 2004; 69:5143-6. [PMID: 15255754 DOI: 10.1021/jo040155f] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Primary- and secondary-alkyl aryl tellurides, prepared by arenetellurolate ring-opening of epoxides/ O-allylation, were found to undergo rapid (3-10 min) group-transfer cyclization to afford tetrahydrofuran derivatives in 60-74% yield when heated in a microwave cavity at 250 degrees C in ethylene glycol or at 180 degrees C in water. To go to completion, similar transformations had previously required extended photolysis in refluxing benzene containing a substantial amount of hexabutylditin. The only drawback of the microwave-assisted process was the loss in diastereoselectivity which is a consequence of the higher reaction temperature. Substitution in the Te-aryl moiety of the secondary-alkyl aryl tellurides (4-OMe, 4-H, 4-CF(3)) did not affect the outcome of the group-transfer reaction in ethylene glycol. However, at lower temperature, using water as a solvent, the CF(3) derivative failed to react. The microwave-assisted group-transfer cyclization was extended to benzylic but not to primary- and secondary-alkyl phenyl selenides.
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Affiliation(s)
- Cecilia Ericsson
- Uppsala University, Department of Chemistry, Organic Chemistry, Box 599, SE-751 24 Uppsala, Sweden
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