1
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Forchetta M, Sabuzi F, Stella L, Conte V, Galloni P. KuQuinone as a Highly Stable and Reusable Organic Photocatalyst in Selective Oxidation of Thioethers to Sulfoxides. J Org Chem 2022; 87:14016-14025. [PMID: 36219841 DOI: 10.1021/acs.joc.2c01648] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A chemoselective photocatalytic system to perform thioether oxidation to sulfoxide is presented. The light-induced oxidation process is here promoted by a metal-free quinoid catalyst, namely 1-hexylKuQuinone (KuQ). Reactions performed in a fluorinated solvent (i.e., HFIP), using O2 as the oxidant, at room temperature, lead to complete thioanisole conversion to methyl phenyl sulfoxide in 60 min. Remarkably, the system can be recharged and recycled without a loss of activity and selectivity, reaching turnover numbers (TONs) higher than 4000. Excellent catalytic performances and full selectivity have also been obtained for the photocatalytic oxidation of substituted thioanisole derivatives, aliphatic, cyclic, and diaryl thioethers. Likewise, the oxidation of heteroaromatic organosulfur compounds can be accomplished, with longer reaction times.
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Affiliation(s)
- Mattia Forchetta
- Department of Chemical Science and Technologies, University of Rome Tor Vergata, Via della Ricerca Scientifica, 00133 Rome, Italy
| | - Federica Sabuzi
- Department of Chemical Science and Technologies, University of Rome Tor Vergata, Via della Ricerca Scientifica, 00133 Rome, Italy
| | - Lorenzo Stella
- Department of Chemical Science and Technologies, University of Rome Tor Vergata, Via della Ricerca Scientifica, 00133 Rome, Italy
| | - Valeria Conte
- Department of Chemical Science and Technologies, University of Rome Tor Vergata, Via della Ricerca Scientifica, 00133 Rome, Italy
| | - Pierluca Galloni
- Department of Chemical Science and Technologies, University of Rome Tor Vergata, Via della Ricerca Scientifica, 00133 Rome, Italy
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2
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Das A, Bhattacharyya D, Senapati SK. Concise Synthesis of N-Aryl Tetrahydroquinolines via a One-Pot Sequential Reduction of Quinoline/Chan–Evans–Lam Coupling Reaction. Synlett 2022. [DOI: 10.1055/s-0042-1751358] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
Abstract
AbstractA boronic acid catalyzed one-pot reduction of quinolines with Hantzsch ester followed by N-arylation via external base-free Chan–Evans–Lam coupling has been demonstrated. This step-economical synthesis of N-aryl tetrahydroquinolines has been accomplished from readily available quinoline, Hantzsch ester, and arylboronic acid under mild reaction conditions. The dual role of boronic acid as a catalyst (in the reduction of quinolines) and a reagent (in the N-arylation) has been realized for the first time. The use of an inexpensive N-arylation protocol, aerobic reaction conditions, and functional group diversity are important practical features.
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Affiliation(s)
- Animesh Das
- Department of Chemistry, Indian Institute of Technology Guwahati
- Centre for Sustainable Polymers, Indian Institute of Technology Guwahati
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3
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Li WX, Yang BW, Ying X, Zhang ZW, Chu XQ, Zhou X, Ma M, Shen ZL. Nickel-Catalyzed Direct Cross-Coupling of Diaryl Sulfoxide with Aryl Bromide. J Org Chem 2022; 87:11899-11908. [PMID: 35957561 DOI: 10.1021/acs.joc.2c01513] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The direct cross-couplings of diaryl sulfoxides with aryl bromides via C-S bond cleavage could be readily accomplished using nickel(II) as the catalyst, 1,2-bis(diphenylphosphino)ethane (dppe) as the ligand, and magnesium turnings as the reducing metal in THF, leading to the corresponding biaryls in moderate to good yields. The reaction exhibited a broad substrate scope and could be applied to a gram-scale synthesis. The "one-pot" reaction, which avoids the utility of presynthesized and moisture-labile organometallic compounds, is operationally simple and step-economic.
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Affiliation(s)
- Wen-Xin Li
- Technical Institute of Fluorochemistry (TIF), Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing, Jiangsu 211816, China
| | - Bo-Wen Yang
- Technical Institute of Fluorochemistry (TIF), Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing, Jiangsu 211816, China
| | - Xuan Ying
- Technical Institute of Fluorochemistry (TIF), Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing, Jiangsu 211816, China
| | - Zhuo-Wen Zhang
- Technical Institute of Fluorochemistry (TIF), Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing, Jiangsu 211816, China
| | - Xue-Qiang Chu
- Technical Institute of Fluorochemistry (TIF), Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing, Jiangsu 211816, China
| | - Xiaocong Zhou
- College of Biological, Chemical Science and Engineering, Jiaxing University, 118 Jiahang Road, Jiaxing, Zhejiang 314001, China
| | - Mengtao Ma
- College of Science, Nanjing Forestry University, Nanjing, Jiangsu 210037, China
| | - Zhi-Liang Shen
- Technical Institute of Fluorochemistry (TIF), Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing, Jiangsu 211816, China
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4
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Zeng H, Yang S, Li C, Fan F, Ling L, Luo M, Zeng X. Chromium-catalyzed couplings of C(aryl)-SMe bonds for accessing arylated and alkylated benzaldehyde derivatives. Chem Commun (Camb) 2022; 58:7094-7097. [PMID: 35661839 DOI: 10.1039/d2cc01631a] [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
Described here is the chromium-catalyzed cleavage of C(aryl)-SMe bonds leading to coupling with organomagnesium to give functionalized benzaldehydes under mild conditions. This reaction was promoted specifically by a low-cost and simple CrCl2 salt used as a precatalyst, enabling synchronous activations of ortho-C(aryl)-SMe and ortho'-C(aryl)-H bonds to achieve difunctionalization of benzaldimines. This work provided a strategy for accessing arylated, alkylated, and diarylated benzaldehyde derivatives as a result of the couplings of C(aryl)-SMe and C(aryl)-SMe/C(aryl)-H bonds promoted with cost-effective Cr catalysis.
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Affiliation(s)
- Haohao Zeng
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China.
| | - Shangru Yang
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China.
| | - Chao Li
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China.
| | - Fei Fan
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China.
| | - Liang Ling
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China.
| | - Meiming Luo
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China.
| | - Xiaoming Zeng
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China.
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5
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Riddell AB, Smith MRA, Schwan AL. The generation and reactions of sulfenate anions. An update. J Sulphur Chem 2022. [DOI: 10.1080/17415993.2022.2077086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Adam B. Riddell
- Department of Chemistry, University of Guelph, Guelph, Canada
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6
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Beletskaya IP, Averin AD. Metal-catalyzed reactions for the C(sp2)–N bond formation: achievements of recent years. RUSSIAN CHEMICAL REVIEWS 2021. [DOI: 10.1070/rcr4999] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Abstract
The review deals with the main catalytic methods for the C(sp2)–N bond formation, including Buchwald–Hartwig palladium-catalyzed amination of aryl and heteroaryl halides, renaissance of the Ullmann chemistry, i.e., the application of catalysis by copper complexes to form the carbon–nitrogen bond, and Chan–Lam reactions of (hetero)arylboronic acids with amines. Also, oxidative amination with C–H activation, which has been booming during the last decade, is addressed. Particular attention is paid to achievements in the application of heterogenized catalysts.
The bibliography includes 350 references.
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7
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Chalotra N, Shah IH, Raheem S, Rizvi MA, Shah BA. Visible-Light-Promoted Oxidative Annulation of Naphthols and Alkynes: Synthesis of Functionalized Naphthofurans. J Org Chem 2021; 86:16770-16784. [PMID: 34726928 DOI: 10.1021/acs.joc.1c01992] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
A visible-light-mediated site-selective oxidative annulation of naphthols with alkynes for the synthesis of functionalized naphthofurans has been developed. The reaction relies on the in situ formation of an electron donor acceptor pair between phenylacetylene and thiophenol as the light-absorbing system to obviate the requirement of an added photocatalyst. The protocol facilitates the transformation of 1-naphthol and 2-naphthol as well as 1,4-naphthoquinone into a wide variety of highly functionalized naphthofurans.
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Affiliation(s)
- Neha Chalotra
- Academy of Scientific and Industrial Research (AcSIR), Ghaziabad 201002, India.,Natural Product & Medicinal Chemistry, CSIR-Indian Institute of Integrative Medicine, Jammu 180001, India
| | - Iftkhar Hussain Shah
- Academy of Scientific and Industrial Research (AcSIR), Ghaziabad 201002, India.,Natural Product & Medicinal Chemistry, CSIR-Indian Institute of Integrative Medicine, Jammu 180001, India
| | - Shabnam Raheem
- Department of Chemistry, University of Kashmir, Srinagar 190006, India
| | | | - Bhahwal Ali Shah
- Academy of Scientific and Industrial Research (AcSIR), Ghaziabad 201002, India.,Natural Product & Medicinal Chemistry, CSIR-Indian Institute of Integrative Medicine, Jammu 180001, India
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8
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Laru S, Bhattacharjee S, Ghosh S, Hajra A. One-Pot Construction of Indolo[2,3- b]quinoxalines through Ruthenium-Catalyzed Ortho C-H Bond Functionalization of 2-Arylquinoxalines with Sulfonyl Azides. Org Lett 2021; 23:7624-7629. [PMID: 34543023 DOI: 10.1021/acs.orglett.1c02837] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The synthesis of N-substituted indolo[2,3-b]quinoxalines has been developed through a Ru(II)-catalyzed ortho C-H functionalization of 2-arylquinoxalines with sulfonyl azides and further oxidation with 2,3-dichloro-5,6-dicyano-1,4-benzoquinone in one pot. This double C-N bond formation strategy provides a new efficient route for the preparation of a series of biologically relevant 6H-indolo[2,3-b]quinoxaline derivatives in up to 94% yield, suggesting a broad substrate scope applicability. The preliminary mechanistic studies reveal that the sequential C-N bond formations proceed through the formation of a five-membered ruthenacyclic intermediate in the first step and a radical mechanism in the second step.
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Affiliation(s)
- Sudip Laru
- Department of Chemistry, Visva-Bharati (A Central University), Santiniketan 731235, India
| | - Suvam Bhattacharjee
- Department of Chemistry, Visva-Bharati (A Central University), Santiniketan 731235, India
| | - Sumit Ghosh
- Department of Chemistry, Visva-Bharati (A Central University), Santiniketan 731235, India
| | - Alakananda Hajra
- Department of Chemistry, Visva-Bharati (A Central University), Santiniketan 731235, India
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9
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Semeniuchenko V, Sharif S, Day J, Chandrasoma N, Pietro WJ, Manthorpe J, Braje WM, Organ MG. (DiMeIHept Cl)Pd: A Low-Load Catalyst for Solvent-Free (Melt) Amination. J Org Chem 2021; 86:10343-10359. [PMID: 34254799 DOI: 10.1021/acs.joc.1c01057] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
(DiMeIHeptCl)Pd, a hyper-branched N-aryl Pd NHC catalyst, has been shown to be efficient at performing amine arylation reactions in solvent-free ("melt") conditions. The highly lipophilic environment of the alkyl chains flanking the Pd center serves as lubricant to allow the complex to navigate through the paste-like environment of these mixtures. The protocol can be used on a multi-gram scale to make a variety of aniline derivatives, including substrates containing alcohol moieties.
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Affiliation(s)
- Volodymyr Semeniuchenko
- Centre for Catalysis Research and Innovation (CCRI), Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa, Ontario, K1N 6N5, Canada
| | - Sepideh Sharif
- Department of Chemistry, Carleton University, 203 Steacie Building, 1125 Colonel By Drive, Ottawa, Ontario, K1S 5B6, Canada
| | - Jonathan Day
- Department of Chemistry, York University, 4700 Keele Street, Toronto, Ontario, M3J 1P3, Canada
| | - Nalin Chandrasoma
- Department of Chemistry, Carleton University, 203 Steacie Building, 1125 Colonel By Drive, Ottawa, Ontario, K1S 5B6, Canada.,Department of Chemistry, York University, 4700 Keele Street, Toronto, Ontario, M3J 1P3, Canada
| | - William J Pietro
- Department of Chemistry, York University, 4700 Keele Street, Toronto, Ontario, M3J 1P3, Canada
| | - Jeffrey Manthorpe
- Department of Chemistry, Carleton University, 203 Steacie Building, 1125 Colonel By Drive, Ottawa, Ontario, K1S 5B6, Canada
| | - Wilfried M Braje
- AbbVie Deutschland GmbH & Co. KG, Neuroscience Discovery Research, Knollstrasse, 67061 Ludwigshafen, Germany
| | - Michael G Organ
- Centre for Catalysis Research and Innovation (CCRI), Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa, Ontario, K1N 6N5, Canada.,Department of Chemistry, York University, 4700 Keele Street, Toronto, Ontario, M3J 1P3, Canada
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10
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Li WZ, Wang ZX. A nickel-catalyzed silylation reaction of alkyl aryl sulfoxides with silylzinc reagents. Org Biomol Chem 2021; 19:5082-5086. [PMID: 34037055 DOI: 10.1039/d1ob00840d] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Ni(PEt3)Cl2-catalyzed silylation of alkyl aryl sulfoxides with silylzinc reagents was carried out. This protocol allows alkyl aryl sulfoxides to convert to arylsilicon compounds under mild reaction conditions, tolerates a range of functional groups and is suitable for a wide scope of substrates.
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Affiliation(s)
- Wei-Ze Li
- CAS Key Laboratory of Soft Matter Chemistry and Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China..
| | - Zhong-Xia Wang
- CAS Key Laboratory of Soft Matter Chemistry and Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China.. and Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300072, P. R. China
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11
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Huang M, Wu Z, Krebs J, Friedrich A, Luo X, Westcott SA, Radius U, Marder TB. Ni-Catalyzed Borylation of Aryl Sulfoxides. Chemistry 2021; 27:8149-8158. [PMID: 33851475 PMCID: PMC8252015 DOI: 10.1002/chem.202100342] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Indexed: 12/21/2022]
Abstract
A nickel/N-heterocyclic carbene (NHC) catalytic system has been developed for the borylation of aryl sulfoxides with B2 (neop)2 (neop=neopentyl glycolato). A wide range of aryl sulfoxides with different electronic and steric properties were converted into the corresponding arylboronic esters in good yields. The regioselective borylation of unsymmetric diaryl sulfoxides was also feasible leading to borylation of the sterically less encumbered aryl substituent. Competition experiments demonstrated that an electron-deficient aryl moiety reacts preferentially. The origin of the selectivity in the Ni-catalyzed borylation of electronically biased unsymmetrical diaryl sulfoxide lies in the oxidative addition step of the catalytic cycle, as oxidative addition of methoxyphenyl 4-(trifluoromethyl)phenyl sulfoxide to the Ni(0) complex occurs selectively to give the structurally characterized complex trans-[Ni(ICy)2 (4-CF3 -C6 H4 ){(SO)-4-MeO-C6 H4 }] 4. For complex 5, the isomer trans-[Ni(ICy)2 (C6 H5 )(OSC6 H5 )] 5-I was structurally characterized in which the phenyl sulfinyl ligand is bound via the oxygen atom to nickel. In solution, the complex trans-[Ni(ICy)2 (C6 H5 )(OSC6 H5 )] 5-I is in equilibrium with the S-bonded isomer trans-[Ni(ICy)2 (C6 H5 )(SOC6 H5 )] 5, as shown by NMR spectroscopy. DFT calculations reveal that these isomers are separated by a mere 0.3 kJ/mol (M06/def2-TZVP-level of theory) and connected via a transition state trans-[Ni(ICy)2 (C6 H5 )(η2 -{SO}-C6 H5 )], which lies only 10.8 kcal/mol above 5.
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Affiliation(s)
- Mingming Huang
- Institut für Anorganische Chemie and Institute for Sustainable Chemistry & Catalysis with BoronJulius-Maximilians-Universität WürzburgAm Hubland97074WürzburgGermany
| | - Zhu Wu
- Institut für Anorganische Chemie and Institute for Sustainable Chemistry & Catalysis with BoronJulius-Maximilians-Universität WürzburgAm Hubland97074WürzburgGermany
| | - Johannes Krebs
- Institut für Anorganische Chemie and Institute for Sustainable Chemistry & Catalysis with BoronJulius-Maximilians-Universität WürzburgAm Hubland97074WürzburgGermany
| | - Alexandra Friedrich
- Institut für Anorganische Chemie and Institute for Sustainable Chemistry & Catalysis with BoronJulius-Maximilians-Universität WürzburgAm Hubland97074WürzburgGermany
| | - Xiaoling Luo
- Chongqing Key Laboratory of Inorganic Functional MaterialsCollege of ChemistryChongqing Normal UniversityChongqing401331China
| | - Stephen A. Westcott
- Department of Chemistry & BiochemistryMount Allison UniversitySackvilleNB E4L 1G8Canada
| | - Udo Radius
- Institut für Anorganische Chemie and Institute for Sustainable Chemistry & Catalysis with BoronJulius-Maximilians-Universität WürzburgAm Hubland97074WürzburgGermany
| | - Todd B. Marder
- Institut für Anorganische Chemie and Institute for Sustainable Chemistry & Catalysis with BoronJulius-Maximilians-Universität WürzburgAm Hubland97074WürzburgGermany
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12
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Suzuki M, Kanemoto K, Nakamura Y, Hosoya T, Yoshida S. Palladium-Catalyzed Sulfinylation of Aryl- and Alkenylborons with Sulfinate Esters. Org Lett 2021; 23:3793-3797. [PMID: 33908784 PMCID: PMC8289295 DOI: 10.1021/acs.orglett.1c01292] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
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An efficient, direct
sulfinylation of organoborons catalyzed by
palladium is disclosed. Treatment of organoborons and sulfinate esters
in the presence of a palladium precatalyst provided a broad range
of sulfoxides. Various organosulfur compounds having oxidizable functional
groups were successfully prepared through the sulfoxide synthesis.
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Affiliation(s)
- Minori Suzuki
- Laboratory of Chemical Bioscience, Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University (TMDU), 2-3-10 Kanda-Surugadai, Chiyoda-ku, Tokyo 101-0062, Japan.,Department of Biological Science and Technology, Faculty of Advanced Engineering, Tokyo University of Science, 6-3-1 Niijuku, Katsushika-ku, Tokyo, 125-8585, Japan
| | - Kazuya Kanemoto
- Laboratory of Chemical Bioscience, Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University (TMDU), 2-3-10 Kanda-Surugadai, Chiyoda-ku, Tokyo 101-0062, Japan
| | - Yu Nakamura
- Laboratory of Chemical Bioscience, Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University (TMDU), 2-3-10 Kanda-Surugadai, Chiyoda-ku, Tokyo 101-0062, Japan
| | - Takamitsu Hosoya
- Laboratory of Chemical Bioscience, Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University (TMDU), 2-3-10 Kanda-Surugadai, Chiyoda-ku, Tokyo 101-0062, Japan
| | - Suguru Yoshida
- Laboratory of Chemical Bioscience, Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University (TMDU), 2-3-10 Kanda-Surugadai, Chiyoda-ku, Tokyo 101-0062, Japan.,Department of Biological Science and Technology, Faculty of Advanced Engineering, Tokyo University of Science, 6-3-1 Niijuku, Katsushika-ku, Tokyo, 125-8585, Japan
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13
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Kim KM, Kim KM. Copper Catalyzed
N
‐Arylation of Amines in Ionic Liquid Using 1‐Aryltriazenes as Aryl Surrogates. ChemistrySelect 2021. [DOI: 10.1002/slct.202100180] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Kang M. Kim
- Department of Pharmaceutical Science and Technology Kyungsung University Busan 48434 Republic of Korea
| | - Kang Min Kim
- Department of Pharmaceutical Science and Technology Kyungsung University Busan 48434 Republic of Korea
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14
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Yorimitsu H. Catalytic Transformations of Sulfonium Salts via C‐S Bond Activation. CHEM REC 2021; 21:3356-3369. [DOI: 10.1002/tcr.202000172] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Revised: 12/30/2020] [Accepted: 12/30/2020] [Indexed: 12/24/2022]
Affiliation(s)
- Hideki Yorimitsu
- Department of Chemistry, Graduate School of Science Kyoto University Sakyo-ku, Kyoto 606-8502 Japan
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15
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Guan YY, Wu XX, Liu YF, Chao JB, Wen ZK. Palladium catalyzed desulfurative coupling of allyl sulfides with organoboronic acids. Org Chem Front 2021. [DOI: 10.1039/d1qo01106e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
A palladium catalyzed desulfurative coupling of allylthioethers with organoboronic acids under mild reaction conditions is described.
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Affiliation(s)
- Yan-Yan Guan
- School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006, China
| | - Xiao-Xue Wu
- School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006, China
| | - Yu-Fang Liu
- School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006, China
| | - Jian-Bin Chao
- Scientific Instrument Center, Shanxi University, Taiyuan 030006, China
| | - Zhen-Kang Wen
- School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006, China
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16
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Yamada K, Yanagi T, Yorimitsu H. Generation of Organozinc Reagents from Arylsulfonium Salts Using a Nickel Catalyst and Zinc Dust. Org Lett 2020; 22:9712-9718. [DOI: 10.1021/acs.orglett.0c03782] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Kodai Yamada
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan
| | - Tomoyuki Yanagi
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan
| | - Hideki Yorimitsu
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan
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17
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Warsitz M, Doye S. Two‐Step Procedure for the Synthesis of 1,2,3,4‐Tetrahydro‐quinolines. European J Org Chem 2020. [DOI: 10.1002/ejoc.202001337] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Michael Warsitz
- Institut für Chemie Universität Oldenburg Carl‐von‐Ossietzky‐Straße 9‐11 26129 Oldenburg Germany
| | - Sven Doye
- Institut für Chemie Universität Oldenburg Carl‐von‐Ossietzky‐Straße 9‐11 26129 Oldenburg Germany
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18
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Yi X, Chen K, Guo J, Chen W, Chen W. Nickel(II)/
N
‐Heterocyclic Carbene Catalyzed Desulfinylative Arylation by C−S Cleavage of Aryl Sulfoxides with Phenylboronic Acids. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000531] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Xiaowen Yi
- Department of Chemistry Zhejiang University 38 Zheda Road Hangzhou 310027 People's Republic of China
- Present address: School of Chemical and Material Engineering Jiangnan University Wuxi 214122 People's Republic of China
| | - Kai Chen
- Department of Chemistry Zhejiang University 38 Zheda Road Hangzhou 310027 People's Republic of China
| | - Junjun Guo
- Department of Chemistry Zhejiang University 38 Zheda Road Hangzhou 310027 People's Republic of China
| | - Wei Chen
- Department of Chemistry Zhejiang University 38 Zheda Road Hangzhou 310027 People's Republic of China
| | - Wanzhi Chen
- Department of Chemistry Zhejiang University 38 Zheda Road Hangzhou 310027 People's Republic of China
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19
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Kumar J, Ahmad A, Rizvi MA, Ganie MA, Khajuria C, Shah BA. Photoredox-Mediated Synthesis of Functionalized Sulfoxides from Terminal Alkynes. Org Lett 2020; 22:5661-5665. [PMID: 32602720 DOI: 10.1021/acs.orglett.0c02055] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
A photoredox-mediated protocol for the synthesis of α-alkoxy-β-ketosulfoxides and α,β-dialkoxysulfoxides using alkynes, thiol, and alcohols is reported. This work presents a rare single-step synthesis of α-substituted sulfoxides, involving tandem introduction of a thiol and alcohol as a key enabling advancement. Furthermore, the method can be easily employed to access vinyl sulfoxides and β-ketosulfoxides.
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Affiliation(s)
- Jaswant Kumar
- AcSIR and Natural Product Microbes, CSIR-Indian Institute of Integrative Medicine, Jammu 180001, Jammu and Kashmir
| | - Ajaz Ahmad
- AcSIR and Natural Product Microbes, CSIR-Indian Institute of Integrative Medicine, Jammu 180001, Jammu and Kashmir
| | - Masood Ahmad Rizvi
- Department of Chemistry, University of Kashmir, Srinagar 190006, Jammu and Kashmir
| | - Majid Ahmed Ganie
- AcSIR and Natural Product Microbes, CSIR-Indian Institute of Integrative Medicine, Jammu 180001, Jammu and Kashmir
| | - Chhavi Khajuria
- AcSIR and Natural Product Microbes, CSIR-Indian Institute of Integrative Medicine, Jammu 180001, Jammu and Kashmir.,Department of Chemistry, Guru Nanak Dev University, Amritsar, India
| | - Bhahwal Ali Shah
- AcSIR and Natural Product Microbes, CSIR-Indian Institute of Integrative Medicine, Jammu 180001, Jammu and Kashmir
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20
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Chen Q, Wu S, Yan S, Li C, Abduhulam H, Shi Y, Dang Y, Cao C. Suzuki–Miyaura Cross-Coupling of Sulfoxides. ACS Catal 2020. [DOI: 10.1021/acscatal.0c01462] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Qianwei Chen
- School of Chemistry and Material Science, Jiangsu Normal University, Xuzhou 221116, China
| | - Shufeng Wu
- School of Chemistry and Material Science, Jiangsu Normal University, Xuzhou 221116, China
| | - Shuqin Yan
- School of Chemistry and Material Science, Jiangsu Normal University, Xuzhou 221116, China
| | - Chengxi Li
- School of Chemistry and Material Science, Jiangsu Normal University, Xuzhou 221116, China
| | - Hayrul Abduhulam
- School of Chemistry and Material Science, Jiangsu Normal University, Xuzhou 221116, China
| | - Yanhui Shi
- School of Chemistry and Material Science, Jiangsu Normal University, Xuzhou 221116, China
| | - Yanfeng Dang
- Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, Tianjin University, Tianjin 300072, China
| | - Changsheng Cao
- School of Chemistry and Material Science, Jiangsu Normal University, Xuzhou 221116, China
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21
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Transition-metal-free formal cross-coupling of aryl methyl sulfoxides and alcohols via nucleophilic activation of C-S bond. Nat Commun 2020; 11:2890. [PMID: 32513962 PMCID: PMC7280189 DOI: 10.1038/s41467-020-16713-8] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Accepted: 05/11/2020] [Indexed: 01/06/2023] Open
Abstract
Employment of sulfoxides as electrophiles in cross-coupling reactions remains underexplored. Herein we report a transition-metal-free cross-coupling strategy utilizing aryl(heteroaryl) methyl sulfoxides and alcohols to afford alkyl aryl(heteroaryl) ethers. Two drug molecules were successfully prepared using this protocol as a key step, emphasizing its potential utility in medicinal chemistry. A DFT computational study suggests that the reaction proceeds via initial addition of the alkoxide to the sulfoxide. This adduct facilitates further intramolecular addition of the alkoxide to the aromatic ring wherein charge on the aromatic system is stabilized by the nearby potassium cation. Rate-determining fragmentation then delivers methyl sulfenate and the aryl or heteroaryl ether. This study establishes the feasibility of nucleophilic addition to an appended sulfoxide as a means to form a bond to aryl(heteroaryl) systems and this modality is expected to find use with many other electrophiles and nucleophiles leading to new cross-coupling processes. Cross-coupling processes without the use of transition metals are challenging to achieve. Here, the authors show a transition-metal-free cross-coupling utilizing aryl(heteroaryl) methyl sulfoxides and alcohols to afford alkyl aryl(heteroaryl) ethers and propose a nucleophilic addition mechanism based on experiments and theory.
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22
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Lou J, Wang Q, Wu P, Wang H, Zhou YG, Yu Z. Transition-metal mediated carbon-sulfur bond activation and transformations: an update. Chem Soc Rev 2020; 49:4307-4359. [PMID: 32458881 DOI: 10.1039/c9cs00837c] [Citation(s) in RCA: 141] [Impact Index Per Article: 35.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/28/2024]
Abstract
Carbon-sulfur bond cross-coupling has become more and more attractive as an alternative protocol to establish carbon-carbon and carbon-heteroatom bonds. Diverse transformations through transition-metal-catalyzed C-S bond activation and cleavage have recently been developed. This review summarizes the advances in transition-metal-catalyzed cross-coupling via carbon-sulfur bond activation and cleavage since late 2012 as an update of the critical review on the same topic published in early 2013 (Chem. Soc. Rev., 2013, 42, 599-621), which is presented by the categories of organosulfur compounds, that is, thioesters, thioethers including heteroaryl, aryl, vinyl, alkyl, and alkynyl sulfides, ketene dithioacetals, sulfoxides including DMSO, sulfones, sulfonyl chlorides, sulfinates, thiocyanates, sulfonium salts, sulfonyl hydrazides, sulfonates, thiophene-based compounds, and C[double bond, length as m-dash]S functionality-bearing compounds such as thioureas, thioamides, and carbon disulfide, as well as the mechanistic insights. An overview of C-S bond cleavage reactions with stoichiometric transition-metal reagents is briefly given. Theoretical studies on the reactivity of carbon-sulfur bonds by DFT calculations are also discussed.
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Affiliation(s)
- Jiang Lou
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, P. R. China. and University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Quannan Wang
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, P. R. China. and University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Ping Wu
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, P. R. China. and University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Hongmei Wang
- State Key Laboratory of NBC Protection for Civilian, Beijing 102205, P. R. China.
| | - Yong-Gui Zhou
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, P. R. China.
| | - Zhengkun Yu
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, P. R. China. and State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 354 Fenglin Road, Shanghai 200032, P. R. China
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23
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Ghosh P, Samanta S, Hajra A. Rhodium(iii)-catalyzed ortho-C-H amidation of 2-arylindazoles with a dioxazolone as an amidating reagent. Org Biomol Chem 2020; 18:1728-1732. [PMID: 32009136 DOI: 10.1039/c9ob02756d] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
A simple and efficient method for the directed amidation of a wide range of 2-arylindazoles has been established for the first time through a rhodium-catalyzed C-H activation reaction with alkyl, aryl and heteroaryl dioxazolones. A series of N-(2-(2H-indazol-2-yl)phenyl)acetamide derivatives were synthesized in excellent yields. A mechanistic study was conducted to describe C-H bond cleavage which is likely to be involved in the rate determining step.
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Affiliation(s)
- Payel Ghosh
- Department of Chemistry, Visva-Bharati (A Central University), Santiniketan, 731235, West Bengal, India.
| | - Sadhanendu Samanta
- Department of Chemistry, Visva-Bharati (A Central University), Santiniketan, 731235, West Bengal, India.
| | - Alakananda Hajra
- Department of Chemistry, Visva-Bharati (A Central University), Santiniketan, 731235, West Bengal, India.
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24
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Affiliation(s)
- Ruth Dorel
- Stratingh Institute for ChemistryZernike Institute for Advanced MaterialsUniversity of Groningen Nijenborgh 4 9747 AG Groningen The Netherlands
| | - Christian P. Grugel
- Institut für Organische ChemieAlbert-Ludwigs-Universität Freiburg Albertstr. 21 79104 Freiburg Germany
| | - Alexander M. Haydl
- Department for Intermediates—Amine SynthesisBASF SE Carl-Bosch-Str. 38 67056 Ludwigshafen am Rhein Germany
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25
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Nozawa-Kumada K, Ito S, Noguchi K, Shigeno M, Kondo Y. Super electron donor-mediated reductive desulfurization reactions. Chem Commun (Camb) 2019; 55:12968-12971. [PMID: 31603153 DOI: 10.1039/c9cc06775b] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
The desulfurization of thioacetals and thioethers by a pyridine-derived electron donor is described. This methodology provides efficient access to the reduced products in high yields and does not require the use of transition-metals, elemental alkali-metals, or hydrogen atom donors.
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Affiliation(s)
- Kanako Nozawa-Kumada
- Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aoba, Aramaki, Aoba-ku, Sendai 980-8578, Japan.
| | - Shungo Ito
- Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aoba, Aramaki, Aoba-ku, Sendai 980-8578, Japan.
| | - Koto Noguchi
- Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aoba, Aramaki, Aoba-ku, Sendai 980-8578, Japan.
| | - Masanori Shigeno
- Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aoba, Aramaki, Aoba-ku, Sendai 980-8578, Japan.
| | - Yoshinori Kondo
- Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aoba, Aramaki, Aoba-ku, Sendai 980-8578, Japan.
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26
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Uno D, Nogi K, Yorimitsu H. Palladium-Catalyzed Arylthiolation of Alkynes Enabled by Surmounting Competitive Dimerization of Alkynes. Org Lett 2019; 21:8295-8299. [DOI: 10.1021/acs.orglett.9b03056] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Daisuke Uno
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan
| | - Keisuke Nogi
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan
| | - Hideki Yorimitsu
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan
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27
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Dorel R, Grugel CP, Haydl AM. The Buchwald-Hartwig Amination After 25 Years. Angew Chem Int Ed Engl 2019; 58:17118-17129. [PMID: 31166642 DOI: 10.1002/anie.201904795] [Citation(s) in RCA: 288] [Impact Index Per Article: 57.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2019] [Indexed: 01/15/2023]
Abstract
The Pd-catalyzed coupling of aryl (pseudo)halides and amines is one of the most powerful approaches for the formation of C(sp2 )-N bonds. The pioneering reports from Migita and subsequently Buchwald and Hartwig on the coupling of aminostannanes and aryl bromides rapidly evolved into general and practical tin-free protocols with broad substrate scope, which led to the establishment of what is now known as the Buchwald-Hartwig amination. This Minireview summarizes the evolution of this cross-coupling reaction over the course of the past 25 years and illustrates some of the most recent applications of this well-established methodology.
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Affiliation(s)
- Ruth Dorel
- Stratingh Institute for Chemistry, Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 9747 AG, Groningen, The Netherlands
| | - Christian P Grugel
- Institut für Organische Chemie, Albert-Ludwigs-Universität Freiburg, Albertstr. 21, 79104, Freiburg, Germany
| | - Alexander M Haydl
- Department for Intermediates-Amine Synthesis, BASF SE, Carl-Bosch-Str. 38, 67056, Ludwigshafen am Rhein, Germany
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28
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Kaiser D, Klose I, Oost R, Neuhaus J, Maulide N. Bond-Forming and -Breaking Reactions at Sulfur(IV): Sulfoxides, Sulfonium Salts, Sulfur Ylides, and Sulfinate Salts. Chem Rev 2019; 119:8701-8780. [PMID: 31243998 PMCID: PMC6661881 DOI: 10.1021/acs.chemrev.9b00111] [Citation(s) in RCA: 447] [Impact Index Per Article: 89.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2019] [Indexed: 12/13/2022]
Abstract
Organosulfur compounds have long played a vital role in organic chemistry and in the development of novel chemical structures and architectures. Prominent among these organosulfur compounds are those involving a sulfur(IV) center, which have been the subject of countless investigations over more than a hundred years. In addition to a long list of textbook sulfur-based reactions, there has been a sustained interest in the chemistry of organosulfur(IV) compounds in recent years. Of particular interest within organosulfur chemistry is the ease with which the synthetic chemist can effect a wide range of transformations through either bond formation or bond cleavage at sulfur. This review aims to cover the developments of the past decade in the chemistry of organic sulfur(IV) molecules and provide insight into both the wide range of reactions which critically rely on this versatile element and the diverse scaffolds that can thereby be synthesized.
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Affiliation(s)
- Daniel Kaiser
- Institute
of Organic Chemistry, University of Vienna, Währinger Strasse 38, 1090 Vienna, Austria
| | - Immo Klose
- Institute
of Organic Chemistry, University of Vienna, Währinger Strasse 38, 1090 Vienna, Austria
| | - Rik Oost
- Institute
of Organic Chemistry, University of Vienna, Währinger Strasse 38, 1090 Vienna, Austria
| | - James Neuhaus
- Institute
of Organic Chemistry, University of Vienna, Währinger Strasse 38, 1090 Vienna, Austria
| | - Nuno Maulide
- Institute
of Organic Chemistry, University of Vienna, Währinger Strasse 38, 1090 Vienna, Austria
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29
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Chalotra N, Rizvi MA, Shah BA. Photoredox-Mediated Generation of gem-Difunctionalized Ketones: Synthesis of α,α-Aminothioketones. Org Lett 2019; 21:4793-4797. [PMID: 31184917 DOI: 10.1021/acs.orglett.9b01677] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Neha Chalotra
- AcSIR and Natural Product Microbes, CSIR-Indian Institute of Integrative Medicine, Jammu 180001, India
| | | | - Bhahwal Ali Shah
- AcSIR and Natural Product Microbes, CSIR-Indian Institute of Integrative Medicine, Jammu 180001, India
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30
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Ji YZ, Zhang JY, Li HJ, Han C, Yang YK, Wu YC. Regioselective and oxidant-free sulfinylation of indoles and pyrroles with sulfinamides. Org Biomol Chem 2019; 17:4789-4800. [PMID: 31033985 DOI: 10.1039/c9ob00526a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
An unexpected time-controlled highly selective C3- or C2-sulfinylation of pyrroles with sulfinamides is reported for the first time. The sulfinylation of indoles with sulfinamides using this protocol is oxidant-free and can be performed under obviously more feasible conditions (1.2 equiv. of indoles, 10 min) in comparison with the precedent procedure (3-20 equiv. of indoles, 16-18 h, ammonium persulfate as oxidant, hv). A variety of functional groups were tolerated, and various C2-thioindoles and C2/3-thiopyrroles were obtained in moderate to excellent yields.
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Affiliation(s)
- Yuan-Zhao Ji
- School of Marine Science and Technology, Harbin Institute of Technology, Weihai 264209, P. R. China.
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31
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Chen Z, Chen X, So CM. Palladium-Catalyzed C(sp2)–N Bond Cross-Coupling with Triaryl Phosphates. J Org Chem 2019; 84:6366-6376. [DOI: 10.1021/acs.joc.9b00703] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Zicong Chen
- Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong
| | - Xiangmeng Chen
- Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong
| | - Chau Ming So
- Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong
- The Hong Kong Polytechnic University, Shenzhen Research Institute, Shenzhen 518057, People’s Republic of China
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32
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Chand S, Kumar S, Singh R, Singh KN. A Practical Copper Catalyzed
N
‐Arylation of Amines Using Aryl Triazenes as Aryl Source. ChemistrySelect 2019. [DOI: 10.1002/slct.201803356] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Shiv Chand
- Department of Chemistry (Centre of Advanced Study)Institute of ScienceBanaras Hindu University Varanasi 221005 India
| | - Saurabh Kumar
- Department of Chemistry (Centre of Advanced Study)Institute of ScienceBanaras Hindu University Varanasi 221005 India
| | - Rahul Singh
- Department of Chemistry (Centre of Advanced Study)Institute of ScienceBanaras Hindu University Varanasi 221005 India
| | - Krishna Nand Singh
- Department of Chemistry (Centre of Advanced Study)Institute of ScienceBanaras Hindu University Varanasi 221005 India
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33
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Li B, Liu S, Wu M, Lin Q, Deng W, Jiang S, Chen L. Selective ruthenium-catalyzed double reductive aminations using hydrosilane to access tertiary amines and piperidine derivatives. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.08.015] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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34
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Tian ZY, Ming XX, Teng HB, Hu YT, Zhang CP. Transition-Metal-Free N-Arylation of Amines by Triarylsulfonium Triflates. Chemistry 2018; 24:13744-13748. [PMID: 29979482 DOI: 10.1002/chem.201802269] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2018] [Indexed: 01/22/2023]
Abstract
A simple and efficient method for transition-metal-free N-arylation of various amines by triarylsulfonium triflates is described. Both aliphatic and aromatic amines were smoothly converted at 80 °C in the presence of tBuOK or KOH to give the corresponding mono N-arylated products in good to high yields. The molar ratios of the reactants and the choice of bases had a big effect on the reaction. When a large excess of [Ph3 S][OTf] and tBuOK were employed for primary amines under the standard conditions, the bis(N-phenyl) products were predominantly formed. This method was also applicable to the synthesis of bioactive N-phenyl amino acid derivatives. The control experiments, the deuterium labelling study, and the presence of regioisomers of N-arylated products when using 4-substituted triarylsulfonium triflates suggested that the reaction might proceed through an aryne intermediate. The present protocol demonstrated that triarylsulfonium salts are versatile arylation reagents in the construction of CAr -N bonds.
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Affiliation(s)
- Ze-Yu Tian
- School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, 205 Luoshi Road, 430070, Wuhan, China
| | - Xiao-Xia Ming
- School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, 205 Luoshi Road, 430070, Wuhan, China
| | - Han-Bing Teng
- School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, 205 Luoshi Road, 430070, Wuhan, China
| | - Yu-Tian Hu
- School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, 205 Luoshi Road, 430070, Wuhan, China
| | - Cheng-Pan Zhang
- School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, 205 Luoshi Road, 430070, Wuhan, China
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35
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Li B, Liu S, Lin Q, Shao Y, Peng S, Li Y. Ruthenium nanoparticle catalyzed selective reductive amination of imine with aldehyde to access tertiary amines. Chem Commun (Camb) 2018; 54:9214-9217. [PMID: 30066006 DOI: 10.1039/c8cc05437a] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Reductive amination is one of the most frequently used transformations in organic synthesis. Herein, we developed a novel ruthenium nanoparticle embedded ordered mesoporous carbon catalyst (Ru-OMC) and a new hydrosilylation process for the synthesis of tertiary amines. We present a direct reductive amination of imines (C[double bond, length as m-dash]N bond) with aldehydes (C[double bond, length as m-dash]O bond) using hydrosilane as the reducing reagent under mild conditions. Moreover, the Ru-OMC catalysts can be reused for up to 14 runs without noticeably losing activity.
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Affiliation(s)
- Bin Li
- School of Chemical & Environmental Engineering, Wuyi University, Jiangmen 529020, Guangdong Province, P. R. China.
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