1
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Zhang YY, Zhang Y, Xue XS, Qing FL. Reversal of the Regioselectivity of Iron-Promoted Hydrogenation and Hydrohalogenation of gem-Difluoroalkenes. Angew Chem Int Ed Engl 2024; 63:e202406324. [PMID: 38637292 DOI: 10.1002/anie.202406324] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2024] [Accepted: 04/17/2024] [Indexed: 04/20/2024]
Abstract
The reaction regioselectivity of gem-difluoroalkenes is dependent on the intrinsic polarity. Thus, the reversal of the regioselectivity of the addition reaction of gem-difluoroalkenes remains a formidable challenge. Herein, we described an unprecedented reversal of regioselectivity of hydrogen atom transfer (HAT) to gem-difluoroalkenes triggered by Fe-H species for the formation of difluoroalkyl radicals. Hydrogenation of the in situ generated radicals gave difluoromethylated products. Mechanism experiments and theoretical studies revealed that the kinetic effect of the irreversible HAT process resulted in the reversal of the regioselectivity of this scenario, leading to the formation of a less stable α-difluoroalkyl radical regioisomer. On basis of this new reaction of gem-difluoroalkene, the iron-promoted hydrohalogenation of gem-difluoroalkenes for the efficient synthesis of aliphatic chlorodifluoromethyl-, bromodifluoromethyl- and iododifluoromethyl-containing compounds was developed. Particularly, this novel hydrohalogenation of gem-difluoroalkenes provided an effect and large-scale access to various iododifluoromethylated compounds of high value for synthetic application.
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Affiliation(s)
- Yu-Yang Zhang
- Key Laboratory of Fluorine and Nitrogen Chemistry and Advanced Materials, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Science, Chinese Academy of Science, 345 Lingling Road, Shanghai, 200032, China
| | - Yuchen Zhang
- Key Laboratory of Fluorine and Nitrogen Chemistry and Advanced Materials, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Science, Chinese Academy of Science, 345 Lingling Road, Shanghai, 200032, China
| | - Xiao-Song Xue
- Key Laboratory of Fluorine and Nitrogen Chemistry and Advanced Materials, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Science, Chinese Academy of Science, 345 Lingling Road, Shanghai, 200032, China
| | - Feng-Ling Qing
- Key Laboratory of Fluorine and Nitrogen Chemistry and Advanced Materials, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Science, Chinese Academy of Science, 345 Lingling Road, Shanghai, 200032, China
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2
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Liao XZ, Wang R, Wang X, Li G. Enantioselective total synthesis of (‒)-lucidumone enabled by tandem prins cyclization/cycloetherification sequence. Nat Commun 2024; 15:2647. [PMID: 38531853 DOI: 10.1038/s41467-024-46896-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2024] [Accepted: 03/13/2024] [Indexed: 03/28/2024] Open
Abstract
The Ganoderma meroterpenoids are a growing class of natural products with architectural complexity, and exhibit a wide range of biological activities. Here, we report an enantioselective total synthesis of the Ganoderma meroterpenoid (‒)-lucidumone. The synthetic route features several key transformations, including a) a Cu-catalyzed enantioselective silicon-tethered intramolecular Diels-Alder cycloaddition to construct the highly functionalized bicyclo[2.2.2]octane moiety; b) Brønsted acid promoted tandem O-deprotection/Prins cyclization/Cycloetherification sequence followed by oxidation to install concurrently the tetrahydrofuran and the fused indanone framework; c) Fleming-Tamao oxidation to generate the secondary hydroxyl; d) an iron-catalyzed Wacker-type oxidation of hindered vinyl group to methyl ketone.
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Affiliation(s)
- Xian-Zhang Liao
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences & Peking Union Medical College, 100050, Beijing, P. R. China
- Beijing Key Laboratory of Active Substance Discovery and Druggability Evaluation, Institute of Materia Medica, Chinese Academy of Medical Sciences & Peking Union Medical College, 100050, Beijing, P. R. China
| | - Ran Wang
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences & Peking Union Medical College, 100050, Beijing, P. R. China
- Beijing Key Laboratory of Active Substance Discovery and Druggability Evaluation, Institute of Materia Medica, Chinese Academy of Medical Sciences & Peking Union Medical College, 100050, Beijing, P. R. China
| | - Xin Wang
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences & Peking Union Medical College, 100050, Beijing, P. R. China
- Beijing Key Laboratory of Active Substance Discovery and Druggability Evaluation, Institute of Materia Medica, Chinese Academy of Medical Sciences & Peking Union Medical College, 100050, Beijing, P. R. China
| | - Guang Li
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences & Peking Union Medical College, 100050, Beijing, P. R. China.
- Beijing Key Laboratory of Active Substance Discovery and Druggability Evaluation, Institute of Materia Medica, Chinese Academy of Medical Sciences & Peking Union Medical College, 100050, Beijing, P. R. China.
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3
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Porte V, Milunovic MNM, Knof U, Leischner T, Danzl T, Kaiser D, Gruene T, Zalibera M, Jelemenska I, Bucinsky L, Jannuzzi SAV, DeBeer S, Novitchi G, Maulide N, Arion VB. Chemical and Redox Noninnocence of Pentane-2,4-dione Bis( S-methylisothiosemicarbazone) in Cobalt Complexes and Their Application in Wacker-Type Oxidation. JACS AU 2024; 4:1166-1183. [PMID: 38559722 PMCID: PMC10976605 DOI: 10.1021/jacsau.4c00005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/02/2024] [Revised: 02/09/2024] [Accepted: 02/15/2024] [Indexed: 04/04/2024]
Abstract
Cobalt complexes with multiproton- and multielectron-responsive ligands are of interest for challenging catalytic transformations. The chemical and redox noninnocence of pentane-2,4-dione bis(S-methylisothiosemicarbazone) (PBIT) in a series of cobalt complexes has been studied by a range of methods, including spectroscopy [UV-vis, NMR, electron paramagnetic resonance (EPR), X-ray absorption spectroscopy (XAS)], cyclic voltammetry, X-ray diffraction, and density functional theory (DFT) calculations. Two complexes [CoIII(H2LSMe)I]I and [CoIII(LSMe)I2] were found to act as precatalysts in a Wacker-type oxidation of olefins using phenylsilane, the role of which was elucidated through isotopic labeling. Insights into the mechanism of the catalytic transformation as well as the substrate scope of this selective reaction are described, and the essential role of phenylsilane and the noninnocence of PBIT are disclosed. Among the several relevant species characterized was an unprecedented Co(III) complex with a dianionic diradical PBIT ligand ([CoIII(LSMe••)I]).
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Affiliation(s)
- Vincent Porte
- University
of Vienna, Institute of Organic Chemistry, Währinger Strasse 38, A-1090 Vienna, Austria
| | - Miljan N. M. Milunovic
- University
of Vienna, Institute of Inorganic Chemistry, Währinger Strasse 42, A-1090 Vienna, Austria
| | - Ulrich Knof
- Novartis
Pharma AG, CH-4056 Basel, Switzerland
| | - Thomas Leischner
- University
of Vienna, Institute of Organic Chemistry, Währinger Strasse 38, A-1090 Vienna, Austria
| | - Tobias Danzl
- University
of Vienna, Institute of Organic Chemistry, Währinger Strasse 38, A-1090 Vienna, Austria
| | - Daniel Kaiser
- University
of Vienna, Institute of Organic Chemistry, Währinger Strasse 38, A-1090 Vienna, Austria
| | - Tim Gruene
- University
of Vienna, Institute of Inorganic Chemistry, Währinger Strasse 42, A-1090 Vienna, Austria
| | - Michal Zalibera
- Institute
of Physical Chemistry and Chemical Physics, Faculty of Chemical and
Food Technology, Slovak University of Technology
in Bratislava, Radlinského 9, SK-81237 Bratislava, Slovak Republic
| | - Ingrid Jelemenska
- Institute
of Physical Chemistry and Chemical Physics, Faculty of Chemical and
Food Technology, Slovak University of Technology
in Bratislava, Radlinského 9, SK-81237 Bratislava, Slovak Republic
| | - Lukas Bucinsky
- Institute
of Physical Chemistry and Chemical Physics, Faculty of Chemical and
Food Technology, Slovak University of Technology
in Bratislava, Radlinského 9, SK-81237 Bratislava, Slovak Republic
| | - Sergio A. V. Jannuzzi
- Max
Planck Institute for Chemical Energy Conversion, Stiftstraße 34-36, 45470 Mülheim an der Ruhr, Germany
| | - Serena DeBeer
- Max
Planck Institute for Chemical Energy Conversion, Stiftstraße 34-36, 45470 Mülheim an der Ruhr, Germany
| | | | - Nuno Maulide
- University
of Vienna, Institute of Organic Chemistry, Währinger Strasse 38, A-1090 Vienna, Austria
| | - Vladimir B. Arion
- University
of Vienna, Institute of Inorganic Chemistry, Währinger Strasse 42, A-1090 Vienna, Austria
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4
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Zhang Z, Li J, Cai Z, Kang S, Wang J, Cui Y, Han S, Sheng L, Yin Q, Dai A, Zhao W, Zhao F. Electrochemical aerobic Wacker-type oxygenation of triaryl substituted alkenes to 1,2,2-triarylethanones. Chem Commun (Camb) 2024; 60:3035-3038. [PMID: 38348672 DOI: 10.1039/d3cc05770d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/13/2024]
Abstract
An effective synthetic approach for various 1,2,2-triarylethanones from triaryl substituted alkenes has been developed via an electrochemical Wacker-type oxygenation with O2 as the sole oxygen source. It presents the first instance of the Wacker-type oxidation expanding its substrate scope to trisubstituted alkenes. The approach is transition-metal-free, compatible with various functional groups, and can be carried out under mild conditions resulting in satisfactory yields. Mechanistic experiments suggest the CO bond formation occurs through reactions between cationic carbon species and the superoxide radical, which involves the 1,2-shift of the electron-rich substituent.
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Affiliation(s)
- Zhou Zhang
- School of Chemical Engineering & Technology, China University of Mining and Technology, Xuzhou 221116, Jiangsu, P. R. China.
| | - Jin Li
- Faculty of Chemical Engineering, Huaiyin Institute of Technology, Huai'an 223003, Jiangsu, P. R. China.
| | - Zhiwei Cai
- College of Pharmacy, Shenzhen Technology University, Shenzhen 518118, Guangdong, P. R. China.
| | - Songyao Kang
- College of Pharmacy, Shenzhen Technology University, Shenzhen 518118, Guangdong, P. R. China.
| | - Jian Wang
- Faculty of Chemical Engineering, Huaiyin Institute of Technology, Huai'an 223003, Jiangsu, P. R. China.
| | - Yue Cui
- Faculty of Chemical Engineering, Huaiyin Institute of Technology, Huai'an 223003, Jiangsu, P. R. China.
| | - Siyuan Han
- Faculty of Chemical Engineering, Huaiyin Institute of Technology, Huai'an 223003, Jiangsu, P. R. China.
| | - Lei Sheng
- College of Pharmacy, Shenzhen Technology University, Shenzhen 518118, Guangdong, P. R. China.
| | - Qing Yin
- College of Pharmacy, Shenzhen Technology University, Shenzhen 518118, Guangdong, P. R. China.
| | - Ang Dai
- College of Pharmacy, Shenzhen Technology University, Shenzhen 518118, Guangdong, P. R. China.
| | - Weining Zhao
- College of Pharmacy, Shenzhen Technology University, Shenzhen 518118, Guangdong, P. R. China.
| | - Fangyuan Zhao
- School of Chemical Engineering & Technology, China University of Mining and Technology, Xuzhou 221116, Jiangsu, P. R. China.
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5
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Abuhafez N, Ehlers AW, de Bruin B, Gramage-Doria R. Markovnikov-Selective Cobalt-Catalyzed Wacker-Type Oxidation of Styrenes into Ketones under Ambient Conditions Enabled by Hydrogen Bonding. Angew Chem Int Ed Engl 2024; 63:e202316825. [PMID: 38037901 DOI: 10.1002/anie.202316825] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Revised: 11/29/2023] [Accepted: 12/01/2023] [Indexed: 12/02/2023]
Abstract
The replacement of palladium catalysts for Wacker-type oxidation of olefins into ketones by first-row transition metals is a relevant approach for searching more sustainable protocols. Besides highly sophisticated iron catalysts, all the other first-row transition metal complexes have only led to poor activities and selectivities. Herein, we show that the cobalt-tetraphenylporphyrin complex is a competent catalyst for the aerobic oxidation of styrenes into ketones with silanes as the hydrogen sources. Remarkably, under room temperature and air atmosphere, the reactions were exceedingly fast (up to 10 minutes) with a low catalyst loading (1 mol %) while keeping an excellent chemo- and Markovnikov-selectivity (up to 99 % of ketone). Unprecedently high TOF (864 h-1 ) and TON (5,800) were reached for the oxidation of aromatic olefins under these benign conditions. Mechanistic studies suggest a reaction mechanism similar to the Mukaiyama-type hydration of olefins with a change in the last fundamental step, which controls the chemoselectivity, thanks to a unique hydrogen bonding network between the ethanol solvent and the cobalt peroxo intermediate.
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Affiliation(s)
- Naba Abuhafez
- Univ Rennes, CNRS, ISCR-UMR6226, 35000, Rennes, France
| | - Andreas W Ehlers
- University of Amsterdam, Science Park 904, 1094 XH, Amsterdam, The Netherlands
| | - Bas de Bruin
- University of Amsterdam, Science Park 904, 1094 XH, Amsterdam, The Netherlands
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6
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Munyaneza NE, Posada C, Xu Z, De Altin Popiolek V, Paddock G, McKee C, Liu G. A Generic Platform for Upcycling Polystyrene to Aryl Ketones and Organosulfur Compounds. Angew Chem Int Ed Engl 2023; 62:e202307042. [PMID: 37439282 DOI: 10.1002/anie.202307042] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Revised: 06/29/2023] [Accepted: 07/10/2023] [Indexed: 07/14/2023]
Abstract
Polystyrene (PS) is one of the least recycled large-volume commodity plastics due to bulkiness of foam products and associated contaminants. PS recycling is also severely hampered by the lack of financial incentive, limited versatility, and poor selectivity of existing methods. To this end, herein we report a thermochemical recycling strategy of "degradation-upcycling" to synthesize a library of high-value aromatic chemicals from PS wastes with high versatility and selectivity. Two cascade reactions are selected to first degrade PS to benzene under mild temperatures, followed by the derivatization thereof utilizing a variety of acyl/alkyl and sulfinyl chloride additives. To demonstrate the versatility, nine ketones and sulfides of cosmetic and pharmaceutical relevance were prepared, including propiophenone, benzophenone, and diphenyl sulfide. The approach is also amenable to sophisticated upcycling reaction designs and can produce desired products stepwise. The facile and versatile approach will provide a scalable and profitable methodology for upcycling PS waste into value-added chemicals.
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Affiliation(s)
| | - Carlos Posada
- Department of Chemistry, Virginia Tech, Blacksburg, VA 24061, USA
| | - Zhen Xu
- Department of Chemistry, Virginia Tech, Blacksburg, VA 24061, USA
| | - Vincenzo De Altin Popiolek
- Department of Chemistry, Virginia Tech, Blacksburg, VA 24061, USA
- Department of Materials Science and Engineering, Virginia Tech, Blacksburg, VA 24061, USA
| | - Griffin Paddock
- Department of Chemistry, Virginia Tech, Blacksburg, VA 24061, USA
| | - Charles McKee
- Department of Chemistry, Virginia Tech, Blacksburg, VA 24061, USA
- Academy of Integrated Science, Virginia Tech, Blacksburg, VA 24061, USA
| | - Guoliang Liu
- Department of Chemistry, Virginia Tech, Blacksburg, VA 24061, USA
- Department of Materials Science and Engineering, Virginia Tech, Blacksburg, VA 24061, USA
- Academy of Integrated Science, Virginia Tech, Blacksburg, VA 24061, USA
- Department of Chemical Engineering and Macromolecules Innovation Institute, Virginia Tech, Blacksburg, VA 24061, USA
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7
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Trouvé J, Youssef K, Kasemthaveechok S, Gramage-Doria R. Catalyst Complexity in a Highly Active and Selective Wacker-Type Markovnikov Oxidation of Olefins with a Bioinspired Iron Complex. ACS Catal 2023. [DOI: 10.1021/acscatal.3c00593] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/19/2023]
Affiliation(s)
| | - Khalil Youssef
- Univ Rennes, CNRS, ISCR-UMR6226, FR-35000 Rennes, France
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8
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Tang L, Lv G, Cheng R, Yang F, Zhou Q. Three-Component Perfluoroalkylvinylation of Alkenes Enabled by Dual DBU/Fe Catalysis. Chemistry 2023; 29:e202203332. [PMID: 36351885 DOI: 10.1002/chem.202203332] [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: 10/26/2022] [Revised: 11/06/2022] [Accepted: 11/09/2022] [Indexed: 11/11/2022]
Abstract
Herein, a simple and efficient strategy that involves dual 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU)/iron-catalyzed alkene perfluoroalkylvinylation by using perfluoroalkyl iodides and 2-aminonaphthalene-1,4-diones as coupling partners is demonstrated. In terms of the developed catalytic system, various styrenes and aliphatic alkenes are well-tolerated, leading to the accurate preparation of perfluoroalkyl-containing 2-aminonaphthalene-1,4-diones in excellent regioselectivity. Moreover, the protocol can be readily applied in late-stage modifications of natural products and pharmaceuticals. The title reactions are featured by easily accessible and inexpensive catalysts and substrates, broad substrate applicability, and mild reaction conditions. Mechanistic investigations reveal a tandem C-I cleavable alkylation and C-C vinylation enabled by cooperative DBU/iron catalysis.
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Affiliation(s)
- Lin Tang
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang, 464000, P.R. China.,Key Laboratory of Utilization of Non-metallic Mineral in the South of Henan, Xinyang, 464000, P.R. China
| | - Ge Lv
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang, 464000, P.R. China
| | - Ruimin Cheng
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang, 464000, P.R. China
| | - Fang Yang
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang, 464000, P.R. China
| | - Qiuju Zhou
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang, 464000, P.R. China
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9
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Schuh T, Kataeva O, Knölker HJ. μ-Oxo-bis[(octacosafluoro- meso-tetraphenylporphyrinato)iron(iii)] - synthesis, crystal structure, and catalytic activity in oxidation reactions. Chem Sci 2023; 14:257-265. [PMID: 36687339 PMCID: PMC9811517 DOI: 10.1039/d2sc06083c] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Accepted: 12/06/2022] [Indexed: 12/12/2022] Open
Abstract
We describe the synthesis and X-ray crystal structure of μ-oxo-bis[(octacosafluoro-meso-tetraphenylporphyrinato)iron(iii)] [(FeTPPF28)2O]. This novel iron complex is an efficient catalyst for oxidative biaryl coupling reactions of diarylamines and carbazoles. The asymmetric oxidative coupling in the presence of an axially chiral biaryl phosphoric acid as co-catalyst provides the 2,2'-bis(arylamino)-1,1'-biaryl in 96% ee. The Wacker-type oxidation of alkenes to the corresponding ketones with (FeTPPF28)2O as catalyst in the presence of phenylsilane proceeds at room temperature with air as the terminal oxidant. For internal and aliphatic alkenes increased ketone/alcohol product ratios were obtained.
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Affiliation(s)
- Tristan Schuh
- Fakultät Chemie, Technische Universität DresdenBergstrasse 6601069 DresdenGermanyhttps://tu-dresden.de/mn/chemie/oc/oc2+49 351-463-37030
| | - Olga Kataeva
- Fakultät Chemie, Technische Universität DresdenBergstrasse 6601069 DresdenGermanyhttps://tu-dresden.de/mn/chemie/oc/oc2+49 351-463-37030
| | - Hans-Joachim Knölker
- Fakultät Chemie, Technische Universität DresdenBergstrasse 6601069 DresdenGermanyhttps://tu-dresden.de/mn/chemie/oc/oc2+49 351-463-37030
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10
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Qian P, Zhang S, Luo F, Wang J, Zhang X, Liu X, Chen X, Wang W, Chen X. Site-selective deuteration at the α-position of enals by an amine and bis(phenylsulfonyl)methane co-catalyzed H/D exchange reaction. Chem Commun (Camb) 2022; 58:11458-11461. [PMID: 36149351 DOI: 10.1039/d2cc04959g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An amine and bis(phenylsulfonyl)methane co-catalyzed hydrogen-deuterium exchange (HDE) method via a Michael-retro-Michael pathway for site-selective introduction of deuterium at the α-position of enals using D2O as a deuterium source has been achieved. The mild, operationally simple protocol allows for high yielding and high level deuterium incorporation (up to 99%) for structurally diverse aromatic-derived enals and dienals.
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Affiliation(s)
- Pengfei Qian
- Shanghai Frontiers Science Center of Optogenetic Techniques for Cell Metabolism, Shanghai Key Laboratory of New Drug Design, and State Key Laboratory of Bioengineering Reactor, School of Pharmacy, East China University of Science & Technology, Shanghai, 200237, P. R. China. .,Jiangsu Key Laboratory of Neuropsychiatric Diseases and College of Pharmaceutical Sciences, Soochow University, 199 Ren'ai Road, Suzhou, Jiangsu, 215123, P. R. China.
| | - Shilei Zhang
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and College of Pharmaceutical Sciences, Soochow University, 199 Ren'ai Road, Suzhou, Jiangsu, 215123, P. R. China.
| | - Fan Luo
- Shanghai Frontiers Science Center of Optogenetic Techniques for Cell Metabolism, Shanghai Key Laboratory of New Drug Design, and State Key Laboratory of Bioengineering Reactor, School of Pharmacy, East China University of Science & Technology, Shanghai, 200237, P. R. China.
| | - Jiarui Wang
- Shanghai Frontiers Science Center of Optogenetic Techniques for Cell Metabolism, Shanghai Key Laboratory of New Drug Design, and State Key Laboratory of Bioengineering Reactor, School of Pharmacy, East China University of Science & Technology, Shanghai, 200237, P. R. China.
| | - Xinyu Zhang
- Shanghai Frontiers Science Center of Optogenetic Techniques for Cell Metabolism, Shanghai Key Laboratory of New Drug Design, and State Key Laboratory of Bioengineering Reactor, School of Pharmacy, East China University of Science & Technology, Shanghai, 200237, P. R. China.
| | - Xuejun Liu
- Shanghai Neutan Pharmaceutical Co., Ltd., Building 26, No. 555 Huanqiao Road, Pudong New Area, Shanghai, P. R. China
| | - Xiaodong Chen
- Shanghai Neutan Pharmaceutical Co., Ltd., Building 26, No. 555 Huanqiao Road, Pudong New Area, Shanghai, P. R. China
| | - Wei Wang
- Shanghai Frontiers Science Center of Optogenetic Techniques for Cell Metabolism, Shanghai Key Laboratory of New Drug Design, and State Key Laboratory of Bioengineering Reactor, School of Pharmacy, East China University of Science & Technology, Shanghai, 200237, P. R. China. .,Department of Pharmacology and Toxicology, and BIO5 Institute, University of Arizona, 1703 E. Mabel St., P. O. Box 210207, Tucson, AZ 85721-0207, USA.
| | - Xiaobei Chen
- Shanghai Frontiers Science Center of Optogenetic Techniques for Cell Metabolism, Shanghai Key Laboratory of New Drug Design, and State Key Laboratory of Bioengineering Reactor, School of Pharmacy, East China University of Science & Technology, Shanghai, 200237, P. R. China.
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11
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Gnaim S, Bauer A, Zhang HJ, Chen L, Gannett C, Malapit CA, Hill DE, Vogt D, Tang T, Daley RA, Hao W, Zeng R, Quertenmont M, Beck WD, Kandahari E, Vantourout JC, Echeverria PG, Abruna HD, Blackmond DG, Minteer SD, Reisman SE, Sigman MS, Baran PS. Cobalt-electrocatalytic HAT for functionalization of unsaturated C-C bonds. Nature 2022; 605:687-695. [PMID: 35614246 DOI: 10.1038/s41586-022-04595-3] [Citation(s) in RCA: 49] [Impact Index Per Article: 24.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Accepted: 03/01/2022] [Indexed: 12/23/2022]
Abstract
The study and application of transition metal hydrides (TMHs) has been an active area of chemical research since the early 1960s1, for energy storage, through the reduction of protons to generate hydrogen2,3, and for organic synthesis, for the functionalization of unsaturated C-C, C-O and C-N bonds4,5. In the former instance, electrochemical means for driving such reactivity has been common place since the 1950s6 but the use of stoichiometric exogenous organic- and metal-based reductants to harness the power of TMHs in synthetic chemistry remains the norm. In particular, cobalt-based TMHs have found widespread use for the derivatization of olefins and alkynes in complex molecule construction, often by a net hydrogen atom transfer (HAT)7. Here we show how an electrocatalytic approach inspired by decades of energy storage research can be made use of in the context of modern organic synthesis. This strategy not only offers benefits in terms of sustainability and efficiency but also enables enhanced chemoselectivity and distinct, tunable reactivity. Ten different reaction manifolds across dozens of substrates are exemplified, along with detailed mechanistic insights into this scalable electrochemical entry into Co-H generation that takes place through a low-valent intermediate.
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Affiliation(s)
- Samer Gnaim
- Department of Chemistry, The Scripps Research Institute (TSRI), La Jolla, CA, USA
| | - Adriano Bauer
- Department of Chemistry, The Scripps Research Institute (TSRI), La Jolla, CA, USA
| | - Hai-Jun Zhang
- Department of Chemistry, The Scripps Research Institute (TSRI), La Jolla, CA, USA
| | - Longrui Chen
- Department of Chemistry, The Scripps Research Institute (TSRI), La Jolla, CA, USA
| | - Cara Gannett
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, NY, USA
| | | | - David E Hill
- The Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, CA, USA
| | - David Vogt
- Department of Chemistry, University of Utah, Salt Lake City, UT, USA
| | - Tianhua Tang
- Department of Chemistry, University of Utah, Salt Lake City, UT, USA
| | - Ryan A Daley
- Department of Chemistry, The Scripps Research Institute (TSRI), La Jolla, CA, USA
| | - Wei Hao
- Department of Chemistry, The Scripps Research Institute (TSRI), La Jolla, CA, USA
| | - Rui Zeng
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, NY, USA
| | | | - Wesley D Beck
- Department of Chemistry, University of Utah, Salt Lake City, UT, USA
| | - Elya Kandahari
- The Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, CA, USA
| | - Julien C Vantourout
- Department of Chemistry, The Scripps Research Institute (TSRI), La Jolla, CA, USA
| | | | - Hector D Abruna
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, NY, USA.
| | - Donna G Blackmond
- Department of Chemistry, The Scripps Research Institute (TSRI), La Jolla, CA, USA.
| | - Shelley D Minteer
- Department of Chemistry, University of Utah, Salt Lake City, UT, USA.
| | - Sarah E Reisman
- The Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, CA, USA.
| | - Matthew S Sigman
- Department of Chemistry, University of Utah, Salt Lake City, UT, USA.
| | - Phil S Baran
- Department of Chemistry, The Scripps Research Institute (TSRI), La Jolla, CA, USA.
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12
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Chemical Profile and In Vitro Evaluation of the Antibacterial Activity of Dioscorea communis Berry Juice. SCI 2022. [DOI: 10.3390/sci4020021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
Within the large family of Dioscoreaceae, Dioscorea communis (L.) Caddick & Wilkin (syn. Tamus communis L.) is considered among the four most widespread representatives in Europe, and it is commonly known under the name black bryony or bryonia. To date, reports have revealed several chemical components from the leaves and tubers of this plant. Nevertheless, an extensive phytochemical investigation has not been performed on its berry juice. In the present study, metabolite profiling procedures, using LC-MS, GC-MS, and NMR approaches, were applied to investigate the chemical profile of the D. communis berries. This work reveals the presence of several metabolites belonging to different phytochemical groups, such as fatty acid esters, alkylamides, phenolic derivatives, and organic acids, with lactic acid being predominant. In parallel, based on orally transmitted traditional uses, the initial extract and selected fractions were tested in vitro for their antibacterial effects and exhibited good activity against two bacterial strains related to skin infections: methicillin-resistant Staphylococcus aureus and Cutibacterium acnes. The MIC and MBC values of the extract were determined at 1.56% w/v against both bacteria. The results of this study provide important information on the chemical characterization of the D. communis berry juice, unveiling the presence of 71 metabolites, which might contribute to and further explain its specific antibacterial activity and its occasional toxicity.
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13
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Purtsas A, Rosenkranz M, Dmitrieva E, Kataeva O, Knölker HJ. Iron-Catalyzed Oxidative C-O and C-N Coupling Reactions Using Air as Sole Oxidant. Chemistry 2022; 28:e202104292. [PMID: 35179270 PMCID: PMC9314016 DOI: 10.1002/chem.202104292] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Indexed: 01/31/2023]
Abstract
We describe the oxygenation of tertiary arylamines, and the amination of tertiary arylamines and phenols. The key step of these coupling reactions is an iron‐catalyzed oxidative C−O or C−N bond formation which generally provides the corresponding products in high yields and with excellent regioselectivity. The transformations are accomplished using hexadecafluorophthalocyanine−iron(II) (FePcF16) as catalyst in the presence of an acid or a base additive and require only ambient air as sole oxidant.
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Affiliation(s)
- Alexander Purtsas
- Fakultät Chemie, Technische Universität Dresden, Bergstraße 66, 01069, Dresden, Germany
| | - Marco Rosenkranz
- Center of Spectroelectrochemistry, Leibniz Institute for Solid State and Materials Research (IFW) Dresden, Helmholtzstraße 20, 01069, Dresden, Germany
| | - Evgenia Dmitrieva
- Center of Spectroelectrochemistry, Leibniz Institute for Solid State and Materials Research (IFW) Dresden, Helmholtzstraße 20, 01069, Dresden, Germany
| | - Olga Kataeva
- A. E. Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center, Russian Academy of Sciences, Arbuzov Str. 8, Kazan, 420088, Russia
| | - Hans-Joachim Knölker
- Fakultät Chemie, Technische Universität Dresden, Bergstraße 66, 01069, Dresden, Germany
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14
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Aerobic oxidative cleavage and esterification of C C bonds catalyzed by iron-based nanocatalyst. MOLECULAR CATALYSIS 2022. [DOI: 10.1016/j.mcat.2022.112152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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15
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Tanaka R, Komori S, Shimizu Y, Kataoka Y, Ura Y. Synthesis of 2-hydroxytetrahydrofurans by Wacker-type oxidation of 1,1-disubstituted alkenes. Org Biomol Chem 2022; 20:570-574. [PMID: 34989385 DOI: 10.1039/d1ob02277f] [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
1,1-Disubstituted alkenes feature high steric hindrance, which renders their Wacker-type oxidation difficult. We demonstrate the stereoselective synthesis of 2-hydroxytetrahydrofurans via the Wacker-type oxidation of 3-methyl-3-buten-1-ols by using a PdCl2(MeCN)2/NO/BQ catalyst system under 1 atm O2 in H2O or H2O/DMF.
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Affiliation(s)
- Rina Tanaka
- Department of Chemistry, Biology, and Environmental Science, Faculty of Science, Nara Women's University, Kitauoyanishi-machi, Nara 630-8506, Japan.
| | - Saki Komori
- Department of Chemistry, Biology, and Environmental Science, Faculty of Science, Nara Women's University, Kitauoyanishi-machi, Nara 630-8506, Japan.
| | - Yuhei Shimizu
- Synthesis Research Laboratory, Kurashiki Research Center, Kuraray Co., Ltd, 2045-1, Sakazu, Kurashiki, Okayama 710-0801, Japan
| | - Yasutaka Kataoka
- Department of Chemistry, Biology, and Environmental Science, Faculty of Science, Nara Women's University, Kitauoyanishi-machi, Nara 630-8506, Japan.
| | - Yasuyuki Ura
- Department of Chemistry, Biology, and Environmental Science, Faculty of Science, Nara Women's University, Kitauoyanishi-machi, Nara 630-8506, Japan.
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16
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Puls F, Seewald F, Grinenko V, Klauß HH, Knölker HJ. Mechanistic Studies on the Hexadecafluorophthalocyanine-Iron-Catalyzed Wacker-Type Oxidation of Olefins to Ketones*. Chemistry 2021; 27:16776-16787. [PMID: 34546596 PMCID: PMC9298363 DOI: 10.1002/chem.202102848] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Indexed: 12/15/2022]
Abstract
The hexadecafluorophthalocyanine-iron complex FePcF16 was recently shown to convert olefins into ketones in the presence of stoichiometric amounts of triethylsilane in ethanol at room temperature under an oxygen atmosphere. Herein, we describe an extensive mechanistic investigation for the conversion of 2-vinylnaphthalene into 2-acetylnaphthalene as model reaction. A variety of studies including deuterium- and 18 O2 -labeling experiments, ESI-MS, and 57 Fe Mössbauer spectroscopy were performed to identify the intermediates involved in the catalytic cycle of the oxidation process. Finally, a detailed and well-supported reaction mechanism for the FePcF16 -catalyzed Wacker-type oxidation is proposed.
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Affiliation(s)
- Florian Puls
- Fakultät Chemie, Technische Universität Dresden, Bergstraße 66, 01069, Dresden, Germany
| | - Felix Seewald
- Institute of Solid State and Materials Physics Fakultät Physik, Technische Universität Dresden, Zellescher Weg 16, 01069, Dresden, Germany
| | - Vadim Grinenko
- Institute of Solid State and Materials Physics Fakultät Physik, Technische Universität Dresden, Zellescher Weg 16, 01069, Dresden, Germany
| | - Hans-Henning Klauß
- Institute of Solid State and Materials Physics Fakultät Physik, Technische Universität Dresden, Zellescher Weg 16, 01069, Dresden, Germany
| | - Hans-Joachim Knölker
- Fakultät Chemie, Technische Universität Dresden, Bergstraße 66, 01069, Dresden, Germany
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17
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Zhang T, Yu M, Huang H. Fe-catalyzed Fukuyama-type indole synthesis triggered by hydrogen atom transfer. Chem Sci 2021; 12:10501-10505. [PMID: 34447542 PMCID: PMC8356753 DOI: 10.1039/d1sc03058b] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2021] [Accepted: 07/05/2021] [Indexed: 02/03/2023] Open
Abstract
Fe, Co, and Mn hydride-initiated radical olefin additions have enjoyed great success in modern synthesis, yet the extension of other hydrogen radicalophiles instead of olefins remains largely elusive. Herein, we report an efficient Fe-catalyzed intramolecular isonitrile-olefin coupling reaction delivering 3-substituted indoles, in which isonitrile was firstly applied as the hydrogen atom acceptor in the radical generation step by MHAT. The protocol features low catalyst loading, mild reaction conditions, and excellent functional group tolerance.
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Affiliation(s)
- Tianze Zhang
- Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemistry, Center for Excellence in Molecular Synthesis of CAS, University of Science and Technology of China Hefei 230026 P. R. China
| | - Min Yu
- Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemistry, Center for Excellence in Molecular Synthesis of CAS, University of Science and Technology of China Hefei 230026 P. R. China
| | - Hanmin Huang
- Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemistry, Center for Excellence in Molecular Synthesis of CAS, University of Science and Technology of China Hefei 230026 P. R. China
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18
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Puls F, Linke P, Kataeva O, Knölker HJ. Iron-Catalyzed Wacker-type Oxidation of Olefins at Room Temperature with 1,3-Diketones or Neocuproine as Ligands*. Angew Chem Int Ed Engl 2021; 60:14083-14090. [PMID: 33856090 PMCID: PMC8251641 DOI: 10.1002/anie.202103222] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Indexed: 11/11/2022]
Abstract
Herein, we describe a convenient and general method for the oxidation of olefins to ketones using either tris(dibenzoylmethanato)iron(III) [Fe(dbm)3 ] or a combination of iron(II) chloride and neocuproine (2,9-dimethyl-1,10-phenanthroline) as catalysts and phenylsilane (PhSiH3 ) as additive. All reactions proceed efficiently at room temperature using air as sole oxidant. This transformation has been applied to a variety of substrates, is operationally simple, proceeds under mild reaction conditions, and shows a high functional-group tolerance. The ketones are formed smoothly in up to 97 % yield and with 100 % regioselectivity, while the corresponding alcohols were observed as by-products. Labeling experiments showed that an incorporated hydrogen atom originates from the phenylsilane. The oxygen atom of the ketone as well as of the alcohol derives from the ambient atmosphere.
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Affiliation(s)
- Florian Puls
- Fakultät Chemie und Lebensmittelchemie, Technische Universität Dresden, Bergstrasse 66, 01069, Dresden, Germany
| | - Philipp Linke
- Fakultät Chemie und Lebensmittelchemie, Technische Universität Dresden, Bergstrasse 66, 01069, Dresden, Germany
| | - Olga Kataeva
- A. E. Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center, Russian Academy of Sciences, Arbuzov Str. 8, Kazan, 420088, Russia
| | - Hans-Joachim Knölker
- Fakultät Chemie und Lebensmittelchemie, Technische Universität Dresden, Bergstrasse 66, 01069, Dresden, Germany
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