1
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Borden OJ, Joseph BT, Head MC, Ammons OA, Kim DE, Bonino AC, Keith JM, Chianese AR. Highly Enantiomerically Enriched Secondary Alcohols via Epoxide Hydrogenolysis. Organometallics 2024; 43:1490-1501. [PMID: 38993820 PMCID: PMC11234370 DOI: 10.1021/acs.organomet.4c00214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2024] [Revised: 06/04/2024] [Accepted: 06/07/2024] [Indexed: 07/13/2024]
Abstract
In this article, we report the development of ruthenium-catalyzed hydrogenolysis of epoxides to selectively give the branched (Markovnikov) alcohol products. In contrast to previously reported catalysts, the use of Milstein's PNN-pincer-ruthenium complex at room temperature allows the conversion of enantiomerically enriched epoxides to secondary alcohols without racemization of the product. The catalyst is effective for a range of aryl epoxides, alkyl epoxides, and glycidyl ethers and is the first homogeneous system to selectively promote hydrogenolysis of glycidol to 1,2-propanediol, without loss of enantiomeric purity. A detailed mechanistic study was conducted, including experimental observations of catalyst speciation under catalytically relevant conditions, comprehensive kinetic characterization of the catalytic reaction, and computational analysis via density functional theory. Heterolytic hydrogen cleavage is mediated by the ruthenium center and exogenous alkoxide base. Epoxide ring opening occurs through an opposite-side attack of the ruthenium hydride on the less-hindered epoxide carbon, giving the branched alcohol product selectively.
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Affiliation(s)
- Olivia J Borden
- Department of Chemistry, Colgate University, 13 Oak Drive, Hamilton, New York 13346, United States
| | - Benjamin T Joseph
- Department of Chemistry, Colgate University, 13 Oak Drive, Hamilton, New York 13346, United States
| | - Marianna C Head
- Department of Chemistry, Colgate University, 13 Oak Drive, Hamilton, New York 13346, United States
| | - Obsidian A Ammons
- Department of Chemistry, Colgate University, 13 Oak Drive, Hamilton, New York 13346, United States
| | - Diane Eun Kim
- Department of Chemistry, Colgate University, 13 Oak Drive, Hamilton, New York 13346, United States
| | - Abigail C Bonino
- Department of Chemistry, Colgate University, 13 Oak Drive, Hamilton, New York 13346, United States
| | - Jason M Keith
- Department of Chemistry, Colgate University, 13 Oak Drive, Hamilton, New York 13346, United States
| | - Anthony R Chianese
- Department of Chemistry, Colgate University, 13 Oak Drive, Hamilton, New York 13346, United States
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2
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Xia Q, Miao Y, Hu Y, Xie Y, Luo J. Copper-Catalyzed Borrowing Hydrogen Reaction for α-Alkylation of Amides with Alcohols. J Org Chem 2024; 89:9654-9660. [PMID: 38900965 DOI: 10.1021/acs.joc.4c00404] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/22/2024]
Abstract
We report the first example of copper-catalyzed α-alkylation of acetamides with alcohols via a borrowing hydrogen strategy. Catalyzed by the in situ-generated copper particles, acetamides and various substituted benzyl or alkyl alcohols were transformed into functionalized amides in good yields with excellent selectivity. Compared with previous work, this process is simple using commercially available Cu(OAc)2 as a precatalyst, without an additional ligand or a metal complex, and easier. Mechanistic studies revealed that aldehyde and α,β-unsaturated amides were the intermediates of this reaction and also disclosed the role of copper in alcohol dehydrogenation and C═C bond hydrogenation.
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Affiliation(s)
- Qiuling Xia
- Zhejiang Engineering Research Center of Advanced Mass Spectrometry and Clinical Application, Institute of Mass Spectrometry, School of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, P. R. China
- Key Laboratory of Advanced Fuel Cells and Electrolyzers Technology of Zhejiang Province, Ningbo Institute of Materials Technology and Engineering of the Chinese Academy of Sciences (CAS), Ningbo 315201, P. R. China
| | - Yulong Miao
- Key Laboratory of Advanced Fuel Cells and Electrolyzers Technology of Zhejiang Province, Ningbo Institute of Materials Technology and Engineering of the Chinese Academy of Sciences (CAS), Ningbo 315201, P. R. China
| | - Yue Hu
- Key Laboratory of Advanced Fuel Cells and Electrolyzers Technology of Zhejiang Province, Ningbo Institute of Materials Technology and Engineering of the Chinese Academy of Sciences (CAS), Ningbo 315201, P. R. China
| | - Yinjun Xie
- Key Laboratory of Advanced Fuel Cells and Electrolyzers Technology of Zhejiang Province, Ningbo Institute of Materials Technology and Engineering of the Chinese Academy of Sciences (CAS), Ningbo 315201, P. R. China
| | - Junfei Luo
- Zhejiang Engineering Research Center of Advanced Mass Spectrometry and Clinical Application, Institute of Mass Spectrometry, School of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, P. R. China
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3
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Cook A, Newman SG. Alcohols as Substrates in Transition-Metal-Catalyzed Arylation, Alkylation, and Related Reactions. Chem Rev 2024; 124:6078-6144. [PMID: 38630862 DOI: 10.1021/acs.chemrev.4c00094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/19/2024]
Abstract
Alcohols are abundant and attractive feedstock molecules for organic synthesis. Many methods for their functionalization require them to first be converted into a more activated derivative, while recent years have seen a vast increase in the number of complexity-building transformations that directly harness unprotected alcohols. This Review discusses how transition metal catalysis can be used toward this goal. These transformations are broadly classified into three categories. Deoxygenative functionalizations, representing derivatization of the C-O bond, enable the alcohol to act as a leaving group toward the formation of new C-C bonds. Etherifications, characterized by derivatization of the O-H bond, represent classical reactivity that has been modernized to include mild reaction conditions, diverse reaction partners, and high selectivities. Lastly, chain functionalization reactions are described, wherein the alcohol group acts as a mediator in formal C-H functionalization reactions of the alkyl backbone. Each of these three classes of transformation will be discussed in context of intermolecular arylation, alkylation, and related reactions, illustrating how catalysis can enable alcohols to be directly harnessed for organic synthesis.
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Affiliation(s)
- Adam Cook
- Centre for Catalysis Research and Innovation, Department of Chemistry and Biomolecular Sciences, University of Ottawa, 10 Marie Curie, Ottawa, Ontario K1N 6N5, Canada
| | - Stephen G Newman
- Centre for Catalysis Research and Innovation, Department of Chemistry and Biomolecular Sciences, University of Ottawa, 10 Marie Curie, Ottawa, Ontario K1N 6N5, Canada
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4
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Yang X, Tian X, Sun N, Hu B, Shen Z, Hu X, Jin L. Geometry-Constrained N, N, O-Nickel Catalyzed α-Alkylation of Unactivated Amides via a Borrowing Hydrogen Strategy. Organometallics 2022. [DOI: 10.1021/acs.organomet.2c00470] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Xue Yang
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310032, P. R. China
| | - Xiaoyu Tian
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310032, P. R. China
| | - Nan Sun
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310032, P. R. China
| | - Baoxiang Hu
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310032, P. R. China
| | - Zhenlu Shen
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310032, P. R. China
| | - Xinquan Hu
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310032, P. R. China
| | - Liqun Jin
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310032, P. R. China
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, The Chinese Academy of Sciences, Lanzhou 730000, P. R. China
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5
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Wu S, Song W, Zhu R, Hu J, Zhao L, Li Z, Yu X, Xia C, Zhao J. Catalyst-Free α-Alkylation-α-Hydroxylation of Oxindole with Alcohols. J Org Chem 2022; 87:5464-5471. [PMID: 35389661 DOI: 10.1021/acs.joc.1c02185] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
3-Alkyl-3-hydroxyoxindoles, a subclass of oxindole products, have antioxidant, neuroprotective, anticancer, and anti-HIV activities. In this study, a green and economical protocol for the synthesis of 3-alkyl-3-hydroxyoxindoles is developed for the first time via α-alkylation-α-hydroxylation of oxindole with benzyl alcohols without using any transition-metal catalysts in yields of 29-93%.
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Affiliation(s)
- Siwei Wu
- Engineering Research Centre of Pharmaceutical Process Chemistry, Ministry of Education; Shanghai Key Laboratory of New Drug Design, School of Pharmacy, and State Key Laboratory of Bioengineering Reactors, East China University of Science & Technology, Shanghai 200237, People's Republic of China
| | - Wei Song
- Engineering Research Centre of Pharmaceutical Process Chemistry, Ministry of Education; Shanghai Key Laboratory of New Drug Design, School of Pharmacy, and State Key Laboratory of Bioengineering Reactors, East China University of Science & Technology, Shanghai 200237, People's Republic of China
| | - Runyu Zhu
- Engineering Research Centre of Pharmaceutical Process Chemistry, Ministry of Education; Shanghai Key Laboratory of New Drug Design, School of Pharmacy, and State Key Laboratory of Bioengineering Reactors, East China University of Science & Technology, Shanghai 200237, People's Republic of China
| | - Jingwen Hu
- Engineering Research Centre of Pharmaceutical Process Chemistry, Ministry of Education; Shanghai Key Laboratory of New Drug Design, School of Pharmacy, and State Key Laboratory of Bioengineering Reactors, East China University of Science & Technology, Shanghai 200237, People's Republic of China
| | - Lin Zhao
- Engineering Research Centre of Pharmaceutical Process Chemistry, Ministry of Education; Shanghai Key Laboratory of New Drug Design, School of Pharmacy, and State Key Laboratory of Bioengineering Reactors, East China University of Science & Technology, Shanghai 200237, People's Republic of China
| | - Zheyao Li
- Engineering Research Centre of Pharmaceutical Process Chemistry, Ministry of Education; Shanghai Key Laboratory of New Drug Design, School of Pharmacy, and State Key Laboratory of Bioengineering Reactors, East China University of Science & Technology, Shanghai 200237, People's Republic of China
| | - Xinhong Yu
- Engineering Research Centre of Pharmaceutical Process Chemistry, Ministry of Education; Shanghai Key Laboratory of New Drug Design, School of Pharmacy, and State Key Laboratory of Bioengineering Reactors, East China University of Science & Technology, Shanghai 200237, People's Republic of China
| | - Chengcai Xia
- Institute of Pharmacology, School of Pharmaceutical Sciences, Taishan Medical University, Taian, Shandong 271016, People's Republic of China
| | - Jianhong Zhao
- Engineering Research Centre of Pharmaceutical Process Chemistry, Ministry of Education; Shanghai Key Laboratory of New Drug Design, School of Pharmacy, and State Key Laboratory of Bioengineering Reactors, East China University of Science & Technology, Shanghai 200237, People's Republic of China
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6
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Pastor M, Vayer M, Weinstabl H, Maulide N. Electrochemical Umpolung C-H Functionalization of Oxindoles. J Org Chem 2021; 87:606-612. [PMID: 34962127 PMCID: PMC8749966 DOI: 10.1021/acs.joc.1c02616] [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] [Indexed: 01/21/2023]
Abstract
![]()
Herein, we present
a general electrochemical method to access unsymmetrical
3,3-disubstituted oxindoles by direct C–H functionalization
where the oxindole fragment behaves as an electrophile. This Umpolung
approach does not rely on stoichiometric oxidants and proceeds under
mild, environmentally benign conditions. Importantly, it enables the
functionalization of these scaffolds through C–O, and by extension
to C–C or even C–N bond formation.
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Affiliation(s)
- Miryam Pastor
- Christian Doppler Laboratory for Entropy-Oriented Drug Design, Institute of Organic Chemistry, University of Vienna, Währinger Strasse 38, 1090 Vienna, Austria
| | - Marie Vayer
- Christian Doppler Laboratory for Entropy-Oriented Drug Design, Institute of Organic Chemistry, University of Vienna, Währinger Strasse 38, 1090 Vienna, Austria
| | - Harald Weinstabl
- Boehringer-Ingelheim RCV, Doktor-Boehringer-Gasse 5-11, 1120 Vienna, Austria
| | - Nuno Maulide
- Christian Doppler Laboratory for Entropy-Oriented Drug Design, Institute of Organic Chemistry, University of Vienna, Währinger Strasse 38, 1090 Vienna, Austria
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7
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Deolka S, Fayzullin RR, Khaskin E. Bulky PNP ligands blocking metal-ligand cooperation allow for isolation of Ru(0), and lead to catalytically active Ru complexes in acceptorless alcohol dehydrogenation. Chemistry 2021; 28:e202103778. [PMID: 34741487 DOI: 10.1002/chem.202103778] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2021] [Indexed: 11/12/2022]
Abstract
We synthesized two 4Me-PNP ligands which block metal-ligand cooperation (MLC) with the Ru center and compared their Ru complex chemistry to their two traditional analogues used in acceptorless alcohol dehydrogenation catalysis. The corresponding 4Me-PNP complexes, which do not undergo dearomatization upon addition of base, allowed us to obtain rare, albeit unstable, 16 electron mono CO Ru(0) complexes. Reactivity with CO and H 2 allows for stabilization and extensive characterization of bis CO Ru(0) 18 electron and Ru(II) cis and trans dihydride species that were also shown to be capable of C(sp2)-H activation. Reactivity and catalysis are contrasted to non-methylated Ru(II) species, showing that an MLC pathway is not necessary, with dramatic differences in outcomes during catalysis between i Pr and t Bu PNP complexes within each of the 4Me and non-methylated backbone PNP series being observed. Unusual intermediates are characterized in one of the new and one of the traditional complexes, and a common catalysis deactivation pathway was identified.
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Affiliation(s)
- Shubham Deolka
- Okinawa Institute of Science and Technology Graduate University, Chemistry, JAPAN
| | - Robert R Fayzullin
- Arbuzov Institute of Organic and Physical Chemistry FRC Kazan Scientific Center of Russian Academy of Sciences: Institut organicheskoj i fizicheskoj khimii imeni A E Arbuzova KazNC RAN, Organic and Physical Chemistry, RUSSIAN FEDERATION
| | - Eugene Khaskin
- Okinawa Institute of Science and Technology Graduate University, Chemistry, 1919-1 Tancha, 904-0495, Onna, JAPAN
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8
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Jamdade AB, Sutar DV, Bisht GS, Gnanaprakasam B. Ru-MACHO-Catalyzed Direct Inter/Intramolecular Macrocyclization of Alcohols and Ketones. Org Lett 2021; 23:7386-7390. [PMID: 34505782 DOI: 10.1021/acs.orglett.1c02569] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Herein we describe a new approach for end-to-end cyclization to construct macrocycles through the inter/intramolecular dehydrogenative coupling of alcohols and ketones in the presence of a Ru-MACHO catalyst. This method is highly atom economical and sustainable and can be used for many substrates. Additionally, this method results in the generation of only water as the byproduct. Moreover, in this approach, high dilution of the reactants is crucial for cyclization and high-yield macrocycle synthesis.
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Affiliation(s)
- Akash Bandu Jamdade
- Department of Chemistry, Indian Institute of Science Education and Research, Pune 411008, India
| | - Dashrat Vishambar Sutar
- Department of Chemistry, Indian Institute of Science Education and Research, Pune 411008, India
| | - Girish Singh Bisht
- Department of Chemistry, Indian Institute of Science Education and Research, Pune 411008, India
| | - Boopathy Gnanaprakasam
- Department of Chemistry, Indian Institute of Science Education and Research, Pune 411008, India
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9
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Pandia BK, Gunanathan C. Manganese(I) Catalyzed α-Alkenylation of Amides Using Alcohols with Liberation of Hydrogen and Water. J Org Chem 2021; 86:9994-10005. [PMID: 34254806 DOI: 10.1021/acs.joc.1c00685] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Herein, unprecedented manganese-catalyzed direct α-alkenylation of amides using alcohols is reported. Aryl amides are reacted with diverse primary alcohols, which provided the α,β-unsaturated amides in moderate to good yields with excellent selectivity. Mechanistic studies indicate that Mn(I) catalyst oxidizes the alcohols to their corresponding aldehydes and also plays an important role in efficient C═C bond formation through aldol condensation. This selective olefination is facilitated by metal-ligand cooperation by the aromatization-dearomatization process operating in the catalytic system. Biorenewable alcohols are used as alkenylation reagents for the challenging α-alkenylation of amides with the highly abundant base metal manganese as a catalyst, which results in water and dihydrogen as the only byproduct, making this catalytic transformation attractive, sustainable, and environmentally benign.
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Affiliation(s)
- Biplab Keshari Pandia
- School of Chemical Sciences, National Institute of Science Education and Research, Homi Bhabha National Institute, Bhubaneswar-752050, India
| | - Chidambaram Gunanathan
- School of Chemical Sciences, National Institute of Science Education and Research, Homi Bhabha National Institute, Bhubaneswar-752050, India
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10
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Pham J, Jarczyk CE, Reynolds EF, Kelly SE, Kim T, He T, Keith JM, Chianese AR. The key role of the latent N-H group in Milstein's catalyst for ester hydrogenation. Chem Sci 2021; 12:8477-8492. [PMID: 35355805 PMCID: PMC8901127 DOI: 10.1039/d1sc00703c] [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] [Received: 02/03/2021] [Accepted: 05/14/2021] [Indexed: 11/21/2022] Open
Abstract
We previously demonstrated that Milstein's seminal diethylamino-substituted PNN-pincer-ruthenium catalyst for ester hydrogenation is activated by dehydroalkylation of the pincer ligand, releasing ethane and eventually forming an NHEt-substituted derivative that we proposed is the active catalyst. In this paper, we present a computational and experimental mechanistic study supporting this hypothesis. Our DFT analysis shows that the minimum-energy pathways for hydrogen activation, ester hydrogenolysis, and aldehyde hydrogenation rely on the key involvement of the nascent N-H group. We have isolated and crystallographically characterized two catalytic intermediates, a ruthenium dihydride and a ruthenium hydridoalkoxide, the latter of which is the catalyst resting state. A detailed kinetic study shows that catalytic ester hydrogenation is first-order in ruthenium and hydrogen, shows saturation behavior in ester, and is inhibited by the product alcohol. A global fit of the kinetic data to a simplified model incorporating the hydridoalkoxide and dihydride intermediates and three kinetically relevant transition states showed excellent agreement with the results from DFT.
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Affiliation(s)
- John Pham
- Department of Chemistry, Colgate University 13 Oak Drive, Hamilton New York 13346 USA
| | - Cole E Jarczyk
- Department of Chemistry, Colgate University 13 Oak Drive, Hamilton New York 13346 USA
| | - Eamon F Reynolds
- Department of Chemistry, Colgate University 13 Oak Drive, Hamilton New York 13346 USA
| | - Sophie E Kelly
- Department of Chemistry, Colgate University 13 Oak Drive, Hamilton New York 13346 USA
| | - Thao Kim
- Department of Chemistry, Colgate University 13 Oak Drive, Hamilton New York 13346 USA
| | - Tianyi He
- Department of Chemistry, Colgate University 13 Oak Drive, Hamilton New York 13346 USA
| | - Jason M Keith
- Department of Chemistry, Colgate University 13 Oak Drive, Hamilton New York 13346 USA
| | - Anthony R Chianese
- Department of Chemistry, Colgate University 13 Oak Drive, Hamilton New York 13346 USA
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11
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Fujita S, Imagawa K, Yamaguchi S, Yamasaki J, Yamazoe S, Mizugaki T, Mitsudome T. A nickel phosphide nanoalloy catalyst for the C-3 alkylation of oxindoles with alcohols. Sci Rep 2021; 11:10673. [PMID: 34021187 PMCID: PMC8140154 DOI: 10.1038/s41598-021-89561-1] [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: 02/11/2021] [Accepted: 04/26/2021] [Indexed: 11/23/2022] Open
Abstract
Although transition metal phosphides are well studied as electrocatalysts and hydrotreating catalysts, the application of metal phosphides in organic synthesis is rare, and cooperative catalysis between metal phosphides and supports remains unexplored. Herein, we report that a cerium dioxide-supported nickel phosphide nanoalloy (nano-Ni2P/CeO2) efficiently promoted the C-3 alkylation of oxindoles with alcohols without any additives through the borrowing hydrogen methodology. Oxindoles were alkylated with various alcohols to provide the corresponding C-3 alkylated oxindoles in high yields. This is the first catalytic system for the C-3 alkylation of oxindoles with alcohols using a non-precious metal-based heterogeneous catalyst. The catalytic activity of nano-Ni2P/CeO2 was comparable to that reported for precious metal-based catalysts. Moreover, nano-Ni2P/CeO2 was easily recoverable and reusable without any significant loss of activity. Control experiments revealed that the Ni2P nanoalloy and the CeO2 support functioned cooperatively, leading to a high catalytic performance.
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Affiliation(s)
- Shu Fujita
- Department of Materials Engineering Science, Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama, Toyonaka, Osaka, 560-8531, Japan
| | - Kohei Imagawa
- Department of Materials Engineering Science, Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama, Toyonaka, Osaka, 560-8531, Japan
| | - Sho Yamaguchi
- Department of Materials Engineering Science, Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama, Toyonaka, Osaka, 560-8531, Japan
| | - Jun Yamasaki
- Research Center for Ultra-High Voltage Electron Microscopy, Osaka University, 7-1, Mihogaoka, Ibaraki, Osaka, 567-0047, Japan
| | - Seiji Yamazoe
- Department of Chemistry, Tokyo Metropolitan University, 1-1 Minami Osawa, Hachioji, Tokyo, 192-0397, Japan
| | - Tomoo Mizugaki
- Department of Materials Engineering Science, Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama, Toyonaka, Osaka, 560-8531, Japan.,Innovative Catalysis Science Division, Institute for Open and Transdisciplinary Research Initiatives (ICS-OTRI), Osaka University, Suita, Osaka, 565-0871, Japan
| | - Takato Mitsudome
- Department of Materials Engineering Science, Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama, Toyonaka, Osaka, 560-8531, Japan.
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12
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Li WZ, Wang ZX. Nickel-catalyzed coupling of R 2P(O)Me (R = aryl or alkoxy) with (hetero)arylmethyl alcohols. Org Biomol Chem 2021; 19:2233-2242. [PMID: 33616130 DOI: 10.1039/d1ob00086a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
α-Alkylation of methyldiarylphosphine oxides with (hetero)arylmethyl alcohols was performed under nickel catalysis. Various arylmethyl and heteroarylmethyl alcohols can be used in this transformation. A series of methyldiarylphosphine oxides were alkylated with 30-90% yields. Functional groups on the aromatic rings of methyldiarylphosphine oxides or arylmethyl alcohols including OMe, NMe2, SMe, CF3, Cl, and F groups can be tolerated. The conditions are also suitable for the α-alkylation reaction of dialkyl methylphosphonates.
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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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13
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Donthireddy SNR, Tiwari CS, Kumar S, Rit A. Atom‐Economic Alk(en)ylations of Esters, Amides, and Methyl Heteroarenes Utilizing Alcohols Following Dehydrogenative Strategies. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202000634] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- S. N. R. Donthireddy
- Department of Chemistry Indian Institute of Technology Madras Chennai 600036 India
| | | | - Shashi Kumar
- Department of Chemistry Indian Institute of Technology Madras Chennai 600036 India
| | - Arnab Rit
- Department of Chemistry Indian Institute of Technology Madras Chennai 600036 India
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14
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Yang P, Wang X, Ma Y, Sun Y, Zhang L, Yue J, Fu K, Zhou JS, Tang B. Nickel-catalyzed C-alkylation of thioamide, amides and esters by primary alcohols through a hydrogen autotransfer strategy. Chem Commun (Camb) 2020; 56:14083-14086. [PMID: 33107876 DOI: 10.1039/d0cc06468h] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
A simple catalyst of Ni(OAc)2 and P(t-Bu)3 enables selective C-alkylation of thioacetamides and primary acetamides with alcohols for the first time. Monoalkylation of thioamides, amides and t-butyl esters occurs in excellent yields (>95%). Mechanistic studies reveal that the reaction proceeds via a hydrogen autotransfer pathway.
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Affiliation(s)
- Peng Yang
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University, Jinan, 250014, P. R. China.
| | - Xiuhua Wang
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University, Jinan, 250014, P. R. China.
| | - Yu Ma
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University, Jinan, 250014, P. R. China.
| | - Yaxin Sun
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University, Jinan, 250014, P. R. China.
| | - Li Zhang
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University, Jinan, 250014, P. R. China.
| | - Jieyu Yue
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University, Jinan, 250014, P. R. China.
| | - Kaiyue Fu
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University, Jinan, 250014, P. R. China.
| | - Jianrong Steve Zhou
- State Key Laboratory of Chemical Oncogenomics, Key Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School, Room F312, 2199 Lishui Road, Nanshan District, Shenzhen 518055, China.
| | - Bo Tang
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University, Jinan, 250014, P. R. China.
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15
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Yang H, Ren Z, Zuo Y, Song Y, Jiang L, Jiang Q, Xue X, Huang W, Wang K, Jiang B. Highly Efficient Amide Michael Addition and Its Use in the Preparation of Tunable Multicolor Photoluminescent Polymers. ACS APPLIED MATERIALS & INTERFACES 2020; 12:50870-50878. [PMID: 33125218 DOI: 10.1021/acsami.0c15260] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
The amide bond is one of the most pivotal functional groups in chemistry and biology. It is also the key component of proteins and widely present in synthetic materials. The majority of studies have focused on the formation of the amide group, but its postmodification has scarcely been investigated. Herein, we successfully develop the Michael additions of amide to acrylate, acrylamide, or propiolate in the presence of phosphazene base at room temperature. This amide Michael addition is much more efficient when the secondary amide instead of the primary amide is used under the same conditions. This reaction was applied to postfunctionalize poly(methyl acrylate-co-acrylamide), P(MA-co-Am), and it is shown that the amide groups of P(MA-co-Am) could be completely modified by N,N-dimethylacrylamide (DMA). Interestingly, the resulting copolymer exhibited tailorable fluorescence with emission wavelength ranging from 380 to 613 nm, which is a desired property for luminescent materials. Moreover, the emissions of the copolymer increased with increasing concentration in solution for all excitation wavelengths from 320 to 580 nm. Therefore, this work not only develops an efficient t-BuP4-catalyzed amide Michael addition but also offers a facile method for tunable multicolor photoluminescent polymers, which is expected to find a wide range of applications in many fields, such as in anticounterfeiting technology.
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Affiliation(s)
- Hongjun Yang
- Jiangsu Key Laboratory of Environmentally Friendly Polymeric Materials, School of Materials Science and Engineering, Jiangsu Collaborative Innovation Centre of Photovoltaic Science and Engineering, Changzhou University, Changzhou, Jiangsu 213164, P. R. China
| | - Ziye Ren
- Jiangsu Key Laboratory of Environmentally Friendly Polymeric Materials, School of Materials Science and Engineering, Jiangsu Collaborative Innovation Centre of Photovoltaic Science and Engineering, Changzhou University, Changzhou, Jiangsu 213164, P. R. China
| | - Yongkang Zuo
- Jiangsu Key Laboratory of Environmentally Friendly Polymeric Materials, School of Materials Science and Engineering, Jiangsu Collaborative Innovation Centre of Photovoltaic Science and Engineering, Changzhou University, Changzhou, Jiangsu 213164, P. R. China
| | - Yiye Song
- Changzhou University Huaide College, Jingjiang, Jiangsu 214500, P. R. China
| | - Li Jiang
- Jiangsu Key Laboratory of Environmentally Friendly Polymeric Materials, School of Materials Science and Engineering, Jiangsu Collaborative Innovation Centre of Photovoltaic Science and Engineering, Changzhou University, Changzhou, Jiangsu 213164, P. R. China
| | - Qimin Jiang
- Jiangsu Key Laboratory of Environmentally Friendly Polymeric Materials, School of Materials Science and Engineering, Jiangsu Collaborative Innovation Centre of Photovoltaic Science and Engineering, Changzhou University, Changzhou, Jiangsu 213164, P. R. China
| | - Xiaoqiang Xue
- Jiangsu Key Laboratory of Environmentally Friendly Polymeric Materials, School of Materials Science and Engineering, Jiangsu Collaborative Innovation Centre of Photovoltaic Science and Engineering, Changzhou University, Changzhou, Jiangsu 213164, P. R. China
| | - Wenyan Huang
- Jiangsu Key Laboratory of Environmentally Friendly Polymeric Materials, School of Materials Science and Engineering, Jiangsu Collaborative Innovation Centre of Photovoltaic Science and Engineering, Changzhou University, Changzhou, Jiangsu 213164, P. R. China
| | - Kaojin Wang
- State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Luminescence from Molecular Aggregates, Center for Aggregation-Induced Emission, South China University of Technology, Guangzhou, Guangdong 510640, P. R. China
| | - Bibiao Jiang
- Jiangsu Key Laboratory of Environmentally Friendly Polymeric Materials, School of Materials Science and Engineering, Jiangsu Collaborative Innovation Centre of Photovoltaic Science and Engineering, Changzhou University, Changzhou, Jiangsu 213164, P. R. China
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16
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Transition Metal-Catalyzed α-Position Carbon–Carbon Bond Formations of Carbonyl Derivatives. Catalysts 2020. [DOI: 10.3390/catal10080861] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
α-Functionalization of carbonyl compounds in organic synthesis has traditionally been accomplished via classical enolate chemistry. As α-functionalized carbonyl moieties are ubiquitous in biologically and pharmaceutically valuable molecules, catalytic α-alkylations have been extensively studied, yielding a plethora of practical and efficient methodologies. Moreover, stereoselective carbon–carbon bond formation at the α-position of achiral carbonyl compounds has been achieved by using various transition metal–chiral ligand complexes. This review describes recent advances—in the last 20 years and especially focusing on the last 10 years—in transition metal-catalyzed α-alkylations of carbonyl compounds, such as aldehydes, ketones, imines, esters, and amides and in efficient carbon–carbon bond formations. Active catalytic species and ligand design are discussed, and mechanistic insights are presented. In addition, recently developed photo-redox catalytic systems for α-alkylations are described as a versatile synthetic tool for the synthesis of chiral carbonyl-bearing molecules.
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17
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Azizi K, Madsen R. Radical condensation between benzylic alcohols and acetamides to form 3-arylpropanamides. Chem Sci 2020; 11:7800-7806. [PMID: 34123070 PMCID: PMC8163310 DOI: 10.1039/d0sc02948c] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
A new radical condensation reaction is developed where benzylic alcohols and acetamides are coupled to generate 3-arylpropanamides with water as the only byproduct. The transformation is performed with potassium tert-butoxide as the only additive and gives rise to a variety of 3-arylpropanamides in good yields. The mechanism has been investigated experimentally with labelled substrates, trapping experiments and spectroscopic measurements. The findings indicate a radical pathway where potassium tert-butoxide is believed to serve a dual role as both base and radical initiator. The radical anion of the benzylic alcohol is proposed as the key intermediate, which undergoes coupling with the enolate of the amide to form the new C–C bond. Subsequent elimination to the corresponding cinnamamide and olefin reduction then affords the 3-arylpropanamides. Benzylic alcohols and acetamides are coupled into 3-arylpropanamides by a new radical condensation through the radical anion of the alcohol.![]()
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Affiliation(s)
- Kobra Azizi
- Department of Chemistry, Technical University of Denmark 2800 Kgs. Lyngby Denmark
| | - Robert Madsen
- Department of Chemistry, Technical University of Denmark 2800 Kgs. Lyngby Denmark
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18
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Maji A, Singh A, Singh N, Ghosh K. Efficient Organoruthenium Catalysts for α‐Alkylation of Ketones and Amide with Alcohols: Synthesis of Quinolines
via
Hydrogen Borrowing Strategy and their Mechanistic Studies. ChemCatChem 2020. [DOI: 10.1002/cctc.202000254] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Ankur Maji
- Department of ChemistryIndian Institution of Technology Roorkee Roorkee Uttarakhand 247667 India
| | - Anshu Singh
- Department of ChemistryIndian Institution of Technology Roorkee Roorkee Uttarakhand 247667 India
| | - Neetu Singh
- Department of ChemistryIndian Institution of Technology Roorkee Roorkee Uttarakhand 247667 India
| | - Kaushik Ghosh
- Department of ChemistryIndian Institution of Technology Roorkee Roorkee Uttarakhand 247667 India
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19
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Shaikh MA, Agalave SG, Ubale AS, Gnanaprakasam B. Ligand-Free Ru-Catalyzed Direct sp 3 C-H Alkylation of Fluorene Using Alcohols. J Org Chem 2020; 85:2277-2290. [PMID: 31905282 DOI: 10.1021/acs.joc.9b02913] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
The sp3 C-H alkylation of 9H-fluorene using alcohol and a Ru catalyst via the borrowing hydrogen concept has been described. This reaction was catalyzed by the [Ru(p-cymene)Cl2]2 complex (3 mol %) and exhibited a broad reaction scope with different alcohols, allowing primary and secondary alcohols to be employed as nonhazardous and greener alkylating agents with the formation of environmentally benign water as a byproduct. A variety of 9H-fluorene underwent selective and exclusive mono-C9-alkylation with primary alcohols in good to excellent isolated yield (26 examples, 50-92% yield), whereas this reaction with secondary alcohols in the absence of any external oxidants furnished the tetrasubstituted alkene as the major product. Furthermore, a base-mediated C-H hydroxylation of the synthesized 9H-fluorene derivatives afforded 9H-hydroxy-functionalized quaternary fluorene derivatives in excellent yield.
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Affiliation(s)
- Moseen A Shaikh
- Department of Chemistry , Indian Institute of Science Education and Research , Pune 411008 , India
| | - Sandip G Agalave
- Department of Chemistry , Indian Institute of Science Education and Research , Pune 411008 , India
| | - Akash S Ubale
- Department of Chemistry , Indian Institute of Science Education and Research , Pune 411008 , India
| | - Boopathy Gnanaprakasam
- Department of Chemistry , Indian Institute of Science Education and Research , Pune 411008 , India
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20
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He T, Buttner JC, Reynolds EF, Pham J, Malek JC, Keith JM, Chianese AR. Dehydroalkylative Activation of CNN- and PNN-Pincer Ruthenium Catalysts for Ester Hydrogenation. J Am Chem Soc 2019; 141:17404-17413. [PMID: 31589441 DOI: 10.1021/jacs.9b09326] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Ruthenium-pincer complexes bearing CNN- and PNN-pincer ligands with diethyl- or diisopropylamino side groups, which have previously been reported to be active precatalysts for ester hydrogenation, undergo dehydroalkylation on heating in the presence of tricyclohexylphosphine to release ethane or propane, giving five-coordinate ruthenium(0) complexes containing a nascent imine functional group. Ethane or propane is also released under the conditions of catalytic ester hydrogenation, and time-course studies show that this release is concomitant with the onset of catalysis. A new PNN-pincer ruthenium(0)-imine complex is a highly active catalyst for ester hydrogenation at room temperature, giving up to 15 500 turnovers with no added base. This complex was shown to react reversibly at room temperature with two equivalents of hydrogen to give a ruthenium(II)-dihydride complex, where the imine functionality has been hydrogenated to give a protic amine side group. These observations have potentially broad implications for the identities of catalytic intermediates in ester hydrogenation and related transformations.
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Affiliation(s)
- Tianyi He
- Department of Chemistry , Colgate University , 13 Oak Drive , Hamilton , New York 13346 , United States
| | - John C Buttner
- Department of Chemistry , Colgate University , 13 Oak Drive , Hamilton , New York 13346 , United States
| | - Eamon F Reynolds
- Department of Chemistry , Colgate University , 13 Oak Drive , Hamilton , New York 13346 , United States
| | - John Pham
- Department of Chemistry , Colgate University , 13 Oak Drive , Hamilton , New York 13346 , United States
| | - Jack C Malek
- Department of Chemistry , Colgate University , 13 Oak Drive , Hamilton , New York 13346 , United States
| | - Jason M Keith
- Department of Chemistry , Colgate University , 13 Oak Drive , Hamilton , New York 13346 , United States
| | - Anthony R Chianese
- Department of Chemistry , Colgate University , 13 Oak Drive , Hamilton , New York 13346 , United States
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21
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Gong D, Hu B, Yang W, Chen D. Bidentate Ru(II)‐NC Complexes as Catalysts for
α
‐Alkylation of Unactivated Amides and Esters. ChemCatChem 2019. [DOI: 10.1002/cctc.201901319] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Dawei Gong
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage School of Chemical Engineering & TechnologyHarbin Institute of Technology Harbin 150001 People's Republic of China
| | - Bowen Hu
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage School of Chemical Engineering & TechnologyHarbin Institute of Technology Harbin 150001 People's Republic of China
| | - Weiwei Yang
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage School of Chemical Engineering & TechnologyHarbin Institute of Technology Harbin 150001 People's Republic of China
| | - Dafa Chen
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage School of Chemical Engineering & TechnologyHarbin Institute of Technology Harbin 150001 People's Republic of China
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22
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Dambatta MB, Polidano K, Northey AD, Williams JMJ, Morrill LC. Iron-Catalyzed Borrowing Hydrogen C-Alkylation of Oxindoles with Alcohols. CHEMSUSCHEM 2019; 12:2345-2349. [PMID: 30958919 PMCID: PMC6619250 DOI: 10.1002/cssc.201900799] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Revised: 04/08/2019] [Indexed: 05/25/2023]
Abstract
A general and efficient iron-catalyzed C-alkylation of oxindoles has been developed. This borrowing hydrogen approach employing a (cyclopentadienone)iron carbonyl complex (2 mol %) exhibited a broad reaction scope, allowing benzylic and simple primary and secondary aliphatic alcohols to be employed as alkylating agents. A variety of oxindoles underwent selective mono-C3-alkylation in good-to-excellent isolated yields (28 examples, 50-92 % yield, 79 % average yield).
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Affiliation(s)
- Mubarak B Dambatta
- Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff, CF10 3AT, UK
| | - Kurt Polidano
- Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff, CF10 3AT, UK
| | - Alexander D Northey
- Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff, CF10 3AT, UK
| | | | - Louis C Morrill
- Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff, CF10 3AT, UK
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23
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Kavukcu SB, Günnaz S, Şahin O, Türkmen H. Piano‐stool Ru (II) arene complexes that contain ethylenediamine and application in alpha‐alkylation reaction of ketones with alcohols. Appl Organomet Chem 2019. [DOI: 10.1002/aoc.4888] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
| | - Salih Günnaz
- Department of ChemistryEge University 35100 Bornova Izmir Turkey
| | - Onur Şahin
- Scientific and Technological Research Application and Research CenterUniversity of Sinop 57000 Sinop Turkey
| | - Hayati Türkmen
- Department of ChemistryEge University 35100 Bornova Izmir Turkey
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24
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Jang YK, Krückel T, Rueping M, El-Sepelgy O. Sustainable Alkylation of Unactivated Esters and Amides with Alcohols Enabled by Manganese Catalysis. Org Lett 2018; 20:7779-7783. [DOI: 10.1021/acs.orglett.8b03184] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yoon Kyung Jang
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany
| | - Tobias Krückel
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany
| | - Magnus Rueping
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany
- KAUST Catalysis Center (KCC), King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia
| | - Osama El-Sepelgy
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany
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25
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Chakraborty S, Daw P, Ben David Y, Milstein D. Manganese-Catalyzed α-Alkylation of Ketones, Esters, and Amides Using Alcohols. ACS Catal 2018; 8:10300-10305. [PMID: 31007965 PMCID: PMC6466737 DOI: 10.1021/acscatal.8b03720] [Citation(s) in RCA: 128] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2018] [Revised: 09/28/2018] [Indexed: 12/21/2022]
Abstract
![]()
Herein
we report the manganese-catalyzed C–C bond-forming
reactions via α-alkylation of ketones, amides, and esters, using
primary alcohols. β-Alkylation of secondary alcohols by primary
alcohols to obtain α-alkylated ketones is also reported. The
reactions are catalyzed by a (iPr-PNP)Mn(H)(CO)2 pincer complex under mild conditions in the presence of (catalytic)
base liberating water (and H2 in the case of secondary
alcohol alkylation) as the sole byproduct.
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Affiliation(s)
- Subrata Chakraborty
- Department of Organic Chemistry, Weizmann Institute of Science, Rehovot, 76100, Israel
| | - Prosenjit Daw
- Department of Organic Chemistry, Weizmann Institute of Science, Rehovot, 76100, Israel
| | - Yehoshoa Ben David
- Department of Organic Chemistry, Weizmann Institute of Science, Rehovot, 76100, Israel
| | - David Milstein
- Department of Organic Chemistry, Weizmann Institute of Science, Rehovot, 76100, Israel
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26
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Bisht GS, Pandey AM, Chaudhari MB, Agalave SG, Kanyal A, Karmodiya K, Gnanaprakasam B. Ru-Catalyzed dehydrogenative synthesis of antimalarial arylidene oxindoles. Org Biomol Chem 2018; 16:7223-7229. [PMID: 30255181 DOI: 10.1039/c8ob01852a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Ru(ii)-NHC catalyzes α-olefination of 2-oxindoles using diaryl methanols in the absence of an acceptor. A wide array of symmetrical and unsymmetrical diaryl methanols undergoes dehydrogenative coupling with 2-oxindole selectively to generate various substituted 3-(diphenylmethylene)indolin-2-one derivatives in good yields and produces environmentally benign by-products, H2 and H2O. This methodology was successfully applied for the synthesis of a bioactive drug i.e. TAS-301. The biological activities of the synthesized 3-(diphenylmethylene)indolin-2-one derivatives were screened against the Plasmodium falciparum parasite and found to exhibit a significant activity with IC50 = 2.24 μM.
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Affiliation(s)
- Girish Singh Bisht
- Department of Chemistry, Indian Institute of Science Education and Research, Pune-411008, India.
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27
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Cao XN, Wan XM, Yang FL, Li K, Hao XQ, Shao T, Zhu X, Song MP. NNN Pincer Ru(II)-Complex-Catalyzed α-Alkylation of Ketones with Alcohols. J Org Chem 2018. [DOI: 10.1021/acs.joc.8b00013] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Xiao-Niu Cao
- College of Chemistry and Molecular Engineering, School of Life Sciences, Zhengzhou University, No. 100 of Science Road, Zhengzhou, Henan 450001, P. R. China
| | - Xiao-Min Wan
- College of Chemistry and Molecular Engineering, School of Life Sciences, Zhengzhou University, No. 100 of Science Road, Zhengzhou, Henan 450001, P. R. China
| | - Fa-Liu Yang
- College of Chemistry and Molecular Engineering, School of Life Sciences, Zhengzhou University, No. 100 of Science Road, Zhengzhou, Henan 450001, P. R. China
| | - Ke Li
- Shandong Qiaochang Modern Agriculture Co., Ltd, No. 1181 Huanghe 12 Road, Binzhou, Shandong 256600, P. R. China
| | - Xin-Qi Hao
- College of Chemistry and Molecular Engineering, School of Life Sciences, Zhengzhou University, No. 100 of Science Road, Zhengzhou, Henan 450001, P. R. China
| | - Tian Shao
- College of Chemistry and Molecular Engineering, School of Life Sciences, Zhengzhou University, No. 100 of Science Road, Zhengzhou, Henan 450001, P. R. China
| | - Xinju Zhu
- College of Chemistry and Molecular Engineering, School of Life Sciences, Zhengzhou University, No. 100 of Science Road, Zhengzhou, Henan 450001, P. R. China
| | - Mao-Ping Song
- College of Chemistry and Molecular Engineering, School of Life Sciences, Zhengzhou University, No. 100 of Science Road, Zhengzhou, Henan 450001, P. R. China
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28
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Zhu WM, Bao WH, Ying WW, Chen WT, Huang YL, Ge GP, Chen GP, Wei WT. TEMPO-Promoted C(sp3
)−H Hydroxylation of 2-Oxindoles at Room Temperature. ASIAN J ORG CHEM 2018. [DOI: 10.1002/ajoc.201700660] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Wen-Ming Zhu
- School of Materials Science and Chemical Engineering; Ningbo University; Ningbo 315211 China
| | - Wen-Hui Bao
- School of Materials Science and Chemical Engineering; Ningbo University; Ningbo 315211 China
| | - Wei-Wei Ying
- School of Materials Science and Chemical Engineering; Ningbo University; Ningbo 315211 China
| | - Wei-Ting Chen
- School of Materials Science and Chemical Engineering; Ningbo University; Ningbo 315211 China
| | - Yi-Ling Huang
- School of Materials Science and Chemical Engineering; Ningbo University; Ningbo 315211 China
| | - Guo-Ping Ge
- School of Materials Science and Chemical Engineering; Ningbo University; Ningbo 315211 China
| | - Gan-Ping Chen
- School of Materials Science and Chemical Engineering; Ningbo University; Ningbo 315211 China
| | - Wen-Ting Wei
- School of Materials Science and Chemical Engineering; Ningbo University; Ningbo 315211 China
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29
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Wu Q, Pan L, Du G, Zhang C, Wang D. Preparation of pyridyltriazole ruthenium complexes as effective catalysts for the selective alkylation and one-pot C–H hydroxylation of 2-oxindole with alcohols and mechanism exploration. Org Chem Front 2018. [DOI: 10.1039/c8qo00725j] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Pyridyltriazole-ligated ruthenium(ii) complexes have been designed and synthesized, which were characterized by X-ray crystallography.
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Affiliation(s)
- Qiang Wu
- The Key Laboratory of Food Colloids and Biotechnology
- Ministry of Education
- School of Chemical and Material Engineering
- Jiangnan University
- Wuxi 214122
| | - Le Pan
- Chemical Engineering College
- Xinjiang Agricultural University
- Urumqi 830052
- China
| | - Guangming Du
- Chemical Engineering College
- Xinjiang Agricultural University
- Urumqi 830052
- China
| | - Chi Zhang
- School of Chemical Science and Engineering
- Tongji University
- Shanghai 200092
- China
| | - Dawei Wang
- The Key Laboratory of Food Colloids and Biotechnology
- Ministry of Education
- School of Chemical and Material Engineering
- Jiangnan University
- Wuxi 214122
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30
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Bisht G, Chaudhari MB, Gupte VS, Gnanaprakasam B. Ru-NHC Catalyzed Domino Reaction of Carbonyl Compounds and Alcohols: A Short Synthesis of Donaxaridine. ACS OMEGA 2017; 2:8234-8252. [PMID: 31457366 PMCID: PMC6645123 DOI: 10.1021/acsomega.7b01152] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2017] [Accepted: 11/06/2017] [Indexed: 05/31/2023]
Abstract
Direct α-alkylation of amides and the synthesis of C3-alkylated 3-hydroxyindolin-2-one/2-substituted-2-hydroxy-3,4-dihydronaphthalen-1(2H)-one derivatives from 2-oxindole/1-teralone were reported using primary alcohols in the presence of Ru-NHC catalyst in a one pot condition under the borrowing hydrogen method. In the case of inert conditions, 2-oxindole/1-teralone exclusively forms the C3-alkylated product. Whereas, allowing this reaction mixture to occur under an air atmosphere predominantly forms C3-alkylated 3-hydroxyindolin-2-one via domino C-H alkylation and aerobic C-H hydroxylation. This Ru-NHC catalyst is easily accessible, air stable, and phosphine free. Using this method, synthesis of 2-oxindole based natural products such as Donaxaridine was accomplished.
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31
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Wei WT, Zhu WM, Ying WW, Wang YN, Bao WH, Gao LH, Luo YJ, Liang H. Metal-Free Nitration of the C(sp
3
)−H Bonds of 2-Oxindoles through Radical Coupling Reaction at Room Temperature. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201700870] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Wen-Ting Wei
- School of Materials Science and Chemical Engineering; Ningbo University; Ningbo 315211 People's Republic of China
| | - Wen-Ming Zhu
- School of Materials Science and Chemical Engineering; Ningbo University; Ningbo 315211 People's Republic of China
| | - Wei-Wei Ying
- School of Materials Science and Chemical Engineering; Ningbo University; Ningbo 315211 People's Republic of China
| | - Yi-Ning Wang
- School of Materials Science and Chemical Engineering; Ningbo University; Ningbo 315211 People's Republic of China
| | - Wen-Hui Bao
- School of Materials Science and Chemical Engineering; Ningbo University; Ningbo 315211 People's Republic of China
| | - Le-Han Gao
- School of Materials Science and Chemical Engineering; Ningbo University; Ningbo 315211 People's Republic of China
| | - Yun-Jie Luo
- School of Materials Science and Chemical Engineering; Ningbo University; Ningbo 315211 People's Republic of China
| | - Hongze Liang
- School of Materials Science and Chemical Engineering; Ningbo University; Ningbo 315211 People's Republic of China
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32
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Feng TY, Li HX, Young DJ, Lang JP. Ligand-Free RuCl3-Catalyzed Alkylation of Methylazaarenes with Alcohols. J Org Chem 2017; 82:4113-4120. [DOI: 10.1021/acs.joc.6b03095] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Tong-Yu Feng
- State
and Local Joint Engineering Laboratory for Novel Functional Polymeric
Materials, College of Chemistry, Chemical Engineering and Materials
Science, Soochow University, Suzhou 215123, Jiangsu, People’s Republic of China
- State
Key Laboratory of Organometallic Chemistry, Shanghai Institute of
Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, People’s Republic of China
| | - Hong-Xi Li
- State
and Local Joint Engineering Laboratory for Novel Functional Polymeric
Materials, College of Chemistry, Chemical Engineering and Materials
Science, Soochow University, Suzhou 215123, Jiangsu, People’s Republic of China
| | - David James Young
- Faculty
of Science and Engineering, University of the Sunshine Coast, Maroochydore
DC, Queensland 4558, Australia
| | - Jian-Ping Lang
- State
and Local Joint Engineering Laboratory for Novel Functional Polymeric
Materials, College of Chemistry, Chemical Engineering and Materials
Science, Soochow University, Suzhou 215123, Jiangsu, People’s Republic of China
- State
Key Laboratory of Organometallic Chemistry, Shanghai Institute of
Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, People’s Republic of China
| |
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