1
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Lamba M, Singh PR, Tanmay, Goswami A. Metal-Free Switchable Chemo- and Regioselective Alkylation of Oxindoles Using Secondary Alcohols. J Org Chem 2024; 89:11244-11260. [PMID: 39106447 DOI: 10.1021/acs.joc.4c00903] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/09/2024]
Abstract
In this study, we have disclosed N-alkylation and C-alkylation reactions of 2-oxindoles with secondary alcohols. Interestingly, these chemoselective reactions are tunable by changing the reaction conditions. Utilization of protic solvent and Brønsted acid catalyst afforded C-alkylation, whereas, aprotic solvent and Lewis acid catalyst afforded N-alkylation of 2-oxindoles in good to excellent yields. Regioselectivity is achieved by protecting the N-center of the oxindole and C5 alkylated product is furnished exclusively. This protocol is notable because it demonstrates functionalization at the C7 position of oxindole without the need for any directing group at the N-center. Further, a new protocol has been reported for C-H oxygenation at the benzylic position of one of the C5 alkylated derivative.
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Affiliation(s)
- Manisha Lamba
- Department of Chemistry, SS Bhatnagar Block, Indian Institute of Technology Ropar, Punjab140001, India
| | - Prasoon Raj Singh
- Department of Chemistry, SS Bhatnagar Block, Indian Institute of Technology Ropar, Punjab140001, India
| | - Tanmay
- Department of Chemistry, SS Bhatnagar Block, Indian Institute of Technology Ropar, Punjab140001, India
| | - Avijit Goswami
- Department of Chemistry, SS Bhatnagar Block, Indian Institute of Technology Ropar, Punjab140001, India
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2
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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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3
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Izquierdo-Aranda L, Adam R, Cabrero-Antonino JR. Silver Supported Nanoparticles on [Mg 4 Al-LDH] as an Efficient Catalyst for the α-Alkylation of Nitriles, Oxindoles and Other Carboxylic Acid Derivatives with Alcohols. CHEMSUSCHEM 2023:e202300818. [PMID: 37486295 DOI: 10.1002/cssc.202300818] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Revised: 07/24/2023] [Accepted: 07/24/2023] [Indexed: 07/25/2023]
Abstract
An efficient heterogeneous silver-catalyzed α-alkylation of nitriles and oxindoles using alcohols via borrowing hydrogen strategy has been developed for the first time. The active nanostructured material, namely [Ag/Mg4 Al-LDH], composed by silver nanoparticles (3-4 nm average particle size) homogeneously stabilized onto a [Mg4 Al-LDH] support with suitable Brønsted basic properties, constitutes a stable catalyst for the sustainable building of novel C-C bonds from alcohols and C-nucleophiles. By applying this catalyst, a broad range of α-functionalized nitriles and oxindoles has been accessed with good to excellent isolated yields and without the addition of external bases. Moreover, the novel silver nanocatalyst has also demonstrated its successful application to the cyclization of N-[2-(hydroxymethyl)phenyl]-2-phenylacetamides to afford 3-arylquinolin-2(1H)-ones, through a one-pot dehydrogenation and intramolecular α-alkylation. Control experiments, kinetic studies, and characterization data of a variety of [Ag/LDH]-type materials confirmed the silver role in the dehydrogenation and hydrogenation steps, while [Mg4 Al-LDH] matrix is able to catalyze condensation. Interestingly, these studies suggest as key point for the successful activity of [Ag/Mg4 Al-LDH], in comparison with other [Ag/LDH]-type nanocatalysts, the suitable acid-base properties of this material.
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Affiliation(s)
- Luis Izquierdo-Aranda
- Instituto de Tecnología Química, Universitat Politécnica de València-Consejo Superior Investigaciones Científicas (UPV-CSIC), Avda. de los Naranjos s/n, 46022, València, Spain
| | - Rosa Adam
- Instituto de Tecnología Química, Universitat Politécnica de València-Consejo Superior Investigaciones Científicas (UPV-CSIC), Avda. de los Naranjos s/n, 46022, València, Spain
- Departament de Química Orgànica, Facultat de Farmàcia, Universitat de València, Av. Vicent Andrés Estellés s/n, 46100, Burjassot, València, Spain
| | - Jose R Cabrero-Antonino
- Instituto de Tecnología Química, Universitat Politécnica de València-Consejo Superior Investigaciones Científicas (UPV-CSIC), Avda. de los Naranjos s/n, 46022, València, Spain
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4
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Bera A, Ghosh A, Banerjee D. Nickel-Catalyzed Alkylation of Oxindoles with Secondary Alcohols. J Org Chem 2023. [PMID: 37161856 DOI: 10.1021/acs.joc.3c00402] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Herein, we have demonstrated a simple nickel-catalyzed C-3-selective alkylation of 2-oxindoles using a wide variety of secondary alkyl alcohols. As a special highlight, functionalization of the cholesterol derivative was reported. Control experiments, initial mechanistic studies, and deuterium-labeling experiments were performed for the alkylation process.
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Affiliation(s)
- Atanu Bera
- Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand 247667, India
| | - Adrija Ghosh
- Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand 247667, India
| | - Debasis Banerjee
- Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand 247667, India
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5
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Saini P, Dolui P, Nair A, Verma A, Elias AJ. A Bench-stable 8-Aminoquinoline Derived Phosphine-free Manganese (I)-Catalyst for Environmentally Benign C(α)-Alkylation of Oxindoles with Secondary and Primary Alcohols. Chem Asian J 2023; 18:e202201148. [PMID: 36688923 DOI: 10.1002/asia.202201148] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Revised: 01/11/2023] [Accepted: 01/23/2023] [Indexed: 01/24/2023]
Abstract
Herein, we report a new air-stable phosphine-free 8-AQ (8-aminoquinoline) based Mn(I) carbonyl complex as the catalyst for the C(α)-alkylation of oxindoles with alcohols. The Mn complex [(8-AQ)Mn(CO)3 Br] works effectively as a catalyst for the α-alkylation of oxindoles by both secondary as well as primary alcohols. The procedure has been used for the synthesis of pharmaceutically important recently developed oxindoles such as 3-(4-methoxybenzyl)indolin-2-one, 3-(4-(dimethylamino)benzyl)indolin-2-one, 3-(4-(dimethylamino)phenyl)-5-fluoroindolin-2-one and 3-(benzo[d][1,3]dioxol-5-ylmethyl)indolin-2-one, which are found to be effective in preventing specific types of cell death in neurodegenerative disorders. Control experiments have been carried out to investigate the reaction mechanism and the crucial role of metal-ligand cooperation via -NH2 moiety during catalysis.
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Affiliation(s)
- Parul Saini
- Department of Chemistry, Indian Institute of Technology, Delhi, Hauz Khas, New Delhi, 110016, India
| | - Pritam Dolui
- Department of Chemistry, Indian Institute of Technology, Delhi, Hauz Khas, New Delhi, 110016, India
| | - Abhishek Nair
- Department of Chemistry, Indian Institute of Technology, Delhi, Hauz Khas, New Delhi, 110016, India
| | - Ashutosh Verma
- Department of Chemistry, Indian Institute of Technology, Delhi, Hauz Khas, New Delhi, 110016, India
| | - Anil J Elias
- Department of Chemistry, Indian Institute of Technology, Delhi, Hauz Khas, New Delhi, 110016, India
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6
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Subaramanian M, Sivakumar G, Balaraman E. First-Row Transition-Metal Catalyzed Acceptorless Dehydrogenation and Related Reactions: A Personal Account. CHEM REC 2021; 21:3839-3871. [PMID: 34415674 DOI: 10.1002/tcr.202100165] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2021] [Revised: 07/17/2021] [Accepted: 08/04/2021] [Indexed: 12/17/2022]
Abstract
The development of sustainable catalytic protocols that circumvent the use of expensive and precious metal catalysts and avoid toxic reagents plays a crucial role in organic synthesis. Indeed, the direct employment of simple and abundantly available feedstock chemicals as the starting materials broadens their synthetic application in contemporary research. In particular, the transition metal-catalyzed diversification of alcohols with various nucleophilic partners to construct a wide range of building blocks is a powerful and highly desirable methodology. Moreover, the replacement of precious metal catalysts by non-precious and less toxic metals for selective transformations is one of the main goals and has been paid significant attention to in modern chemistry. In view of this, the first-row transition metal catalysts find extensive applications in various synthetic transformations such as catalytic hydrogenation, dehydrogenation, and related reactions. Herein, we have disclosed our recent developments on the base-metal catalysis such as Mn, Fe, Co, and Ni for the acceptorless dehydrogenation reactions and its application in the C-C and C-N bond formation via hydrogen auto-transfer (HA) and acceptorless dehydrogenation coupling (ADC) reactions. These HA/ADC protocols employ alcohol as alkylating agents and eliminate water and/or hydrogen gas as by-products, representing highly atom-efficient and environmentally benign reactions. Furthermore, diverse simple to complex organic molecules synthesis by C-C and C-N bond formation using feedstock alcohols are also overviewed. Overall, this account deals with the contribution and development of efficient and novel homogeneous as well as heterogeneous base-metal catalysts for sustainable chemical synthesis.
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Affiliation(s)
- Murugan Subaramanian
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Tirupati, Tirupati, 517507, India
| | - Ganesan Sivakumar
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Tirupati, Tirupati, 517507, India
| | - Ekambaram Balaraman
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Tirupati, Tirupati, 517507, India
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7
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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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8
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Rana J, Nagarasu P, Subaramanian M, Mondal A, Madhu V, Balaraman E. Manganese-Catalyzed C(α)-Alkylation of Oxindoles with Secondary Alcohols via Borrowing Hydrogen. Organometallics 2021. [DOI: 10.1021/acs.organomet.1c00009] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Jagannath Rana
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Tirupati, Tirupati 517507, India
| | - Palaniyappan Nagarasu
- Department of Applied Chemistry, Karunya Institute of Technology and Science (Deemed to be University), Coimbatore 641114, Tamil Nadu, India
| | - Murugan Subaramanian
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Tirupati, Tirupati 517507, India
| | - Akash Mondal
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Tirupati, Tirupati 517507, India
| | - Vedichi Madhu
- Department of Applied Chemistry, Karunya Institute of Technology and Science (Deemed to be University), Coimbatore 641114, Tamil Nadu, India
| | - Ekambaram Balaraman
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Tirupati, Tirupati 517507, India
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9
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Bartoccini F, Retini M, Piersanti G. C3-Alkylation of indoles and oxindoles by alcohols by means of borrowing hydrogen methodology. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.151875] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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10
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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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11
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Yu Z, Chen Z, Su Q, Ye S, Yuan H, Kuai M, Lv M, Tu Z, Yang X, Liu R, Hu G, Li Q. Dual inhibitors of RAF-MEK-ERK and PI3K-PDK1-AKT pathways: Design, synthesis and preliminary anticancer activity studies of 3-substituted-5-(phenylamino) indolone derivatives. Bioorg Med Chem 2019; 27:944-954. [PMID: 30777660 DOI: 10.1016/j.bmc.2019.01.028] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2018] [Revised: 01/21/2019] [Accepted: 01/23/2019] [Indexed: 12/31/2022]
Abstract
The dysfunction and mutual compensatory activation of RAF-MEK-ERK and PI3K-PDK1-AKT pathways have been demonstrated as the hallmarks in several primary and recurrent cancers. The strategy of concurrent blocking of these two pathways shows clinical merits on effective cancer therapy, such as combinatory treatments and dual-pathway inhibitors. Herein, we report a novel prototype of dual-pathway inhibitors by means of merging the core structural scaffolds of a MEK1 inhibitor and a PDK1 inhibitor. A library of 43 compounds that categorized into three series (Series I-III) was synthesized and tested for antitumor activity in lung cancer cells. The results from structure-activity relationship (SAR) analysis showed the following order of antitumor activity that 3-hydroxy-5-(phenylamino) indolone (Series III) > 3-alkenyl-5-(phenylamino) indolone (Series I) > 3-alkyl-5-(phenylamino) indolone (Series II). A lead compound 9za in Series III showed most potent antitumor activity with IC50 value of 1.8 ± 0.8 µM in A549 cells. Moreover, antitumor mechanism study demonstrated that 9za exerted significant apoptotic effect, and cellular signal pathway analysis revealed the potent blockage of phosphorylation levels of ERK and AKT in RAF-MEK-ERK and PI3K-PDK1-AKT pathways, respectively. The results reported here provide robust experimental basis for the discovery and optimization of dual pathway agents for anti-lung cancer therapy.
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Affiliation(s)
- Zutao Yu
- Department of Medicinal Chemistry, Xiangya School of Pharmaceutical Sciences, Central South University, Changsha 410013, Hunan, PR China
| | - Zhuo Chen
- Department of Medicinal Chemistry, Xiangya School of Pharmaceutical Sciences, Central South University, Changsha 410013, Hunan, PR China
| | - Qiongli Su
- Department of Pharmacy, School of Medicine, Hunan Normal University, Changsha 410013, Hunan, PR China
| | - Shiqi Ye
- School of Medicine, Shenzhen University, Shenzhen 518060, Guangdong, PR China
| | - Hongbo Yuan
- Hunan Qianjin Xiangjiang Pharmaceutical Co., Ltd, Changsha 410013, Hunan, PR China
| | - Mengni Kuai
- Department of Medicinal Chemistry, Xiangya School of Pharmaceutical Sciences, Central South University, Changsha 410013, Hunan, PR China; Department of Pharmacy, School of Medicine, Hunan Normal University, Changsha 410013, Hunan, PR China
| | - Meng Lv
- Department of Medicinal Chemistry, Xiangya School of Pharmaceutical Sciences, Central South University, Changsha 410013, Hunan, PR China
| | - Zhijun Tu
- Department of Medicinal Chemistry, Xiangya School of Pharmaceutical Sciences, Central South University, Changsha 410013, Hunan, PR China
| | - Xiaoping Yang
- Department of Pharmacy, School of Medicine, Hunan Normal University, Changsha 410013, Hunan, PR China
| | - RangRu Liu
- Key Laboratory of Tropical Diseases and Translational Medicine of the Ministry of Education & Hainan Provincial Key Laboratory of Tropical Medicine, Hainan Medical College, Haikou, PR China
| | - Gaoyun Hu
- Department of Medicinal Chemistry, Xiangya School of Pharmaceutical Sciences, Central South University, Changsha 410013, Hunan, PR China
| | - Qianbin Li
- Department of Medicinal Chemistry, Xiangya School of Pharmaceutical Sciences, Central South University, Changsha 410013, Hunan, PR China.
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12
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Rana J, Gupta V, Balaraman E. Manganese-catalyzed direct C–C coupling of α-C–H bonds of amides and esters with alcohols via hydrogen autotransfer. Dalton Trans 2019; 48:7094-7099. [DOI: 10.1039/c8dt05020a] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Mn-catalyzed C-alkylation of amides and tert-butyl acetate using alcohols as alkylating agents is reported. This approach exhibits a broad substrate scope providing the C(α)-alkylated amides in good yields via hydrogen auto-transfer strategy.
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Affiliation(s)
- Jagannath Rana
- Organic Chemistry Division
- CSIR-National Chemical Laboratory (CSIR-NCL)
- Pune - 411008
- India
- Academy of Scientific and Innovative Research (AcSIR)
| | - Virendrakumar Gupta
- Polymer Synthesis & Catalysis
- Reliance Research & Development Centre
- Reliance Industries Limited
- Navi Mumbai
- India
| | - Ekambaram Balaraman
- Organic Chemistry Division
- CSIR-National Chemical Laboratory (CSIR-NCL)
- Pune - 411008
- India
- Department of Chemistry
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13
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Midya SP, Rana J, Pitchaimani J, Nandakumar A, Madhu V, Balaraman E. Ni-Catalyzed α-Alkylation of Unactivated Amides and Esters with Alcohols by Hydrogen Auto-Transfer Strategy. CHEMSUSCHEM 2018; 11:3911-3916. [PMID: 30284756 DOI: 10.1002/cssc.201801443] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2018] [Revised: 09/19/2018] [Indexed: 05/20/2023]
Abstract
A transition-metal-catalyzed borrowing hydrogen/hydrogen auto-transfer strategy allows the utilization of feedstock alcohols as an alkylating partner, which avoids the formation of stoichiometric salt waste and enables a direct and benign approach for the construction of C-N and C-C bonds. In this study, a nickel-catalyzed α-alkylation of unactivated amides and ester (tert-butyl acetate) is carried out by using primary alcohols under mild conditions. This C-C bond-forming reaction is catalyzed by a new, molecularly defined nickel(II) NNN-pincer complex (0.1-1 mol %) and proceeds through hydrogen auto-transfer, thereby releasing water as the sole byproduct. In addition, N-alkylation of cyclic amides under Ni-catalytic conditions is demonstrated.
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Affiliation(s)
- Siba P Midya
- Organic Chemistry Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune-, 411008, India
| | - Jagannath Rana
- Organic Chemistry Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune-, 411008, India
| | - Jayaraman Pitchaimani
- Department of Chemistry, Karunya Institute of Technology and Sciences, Coimbatore-, 641114, Tamil Nadu, India
| | - Avanashiappan Nandakumar
- Organic Chemistry Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune-, 411008, India
| | - Vedichi Madhu
- Department of Chemistry, Karunya Institute of Technology and Sciences, Coimbatore-, 641114, Tamil Nadu, India
| | - Ekambaram Balaraman
- Organic Chemistry Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune-, 411008, India
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14
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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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15
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Putra AE, Oe Y, Ohta T. Selective N
-Monoalkylation of 6-Aminouracils with Alcohols: An Environmentally Benign Protocol for the Synthesis of 6-Alkylaminouracils. European J Org Chem 2018. [DOI: 10.1002/ejoc.201701445] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Anggi Eka Putra
- Graduate School of Life and Medical Sciences; Doshisha University; 1-3 Tatara Miyakodani, Kyotanabe-shi 610-0394 Kyoto Japan
| | - Yohei Oe
- Graduate School of Life and Medical Sciences; Doshisha University; 1-3 Tatara Miyakodani, Kyotanabe-shi 610-0394 Kyoto Japan
- Department of Biomedical Information; Faculty of Life and Medical Sciences; Doshisha University; 1-3 Tatara Miyakodani, Kyotanabe-shi 610-0394 Kyoto Japan
| | - Tetsuo Ohta
- Graduate School of Life and Medical Sciences; Doshisha University; 1-3 Tatara Miyakodani, Kyotanabe-shi 610-0394 Kyoto Japan
- Department of Biomedical Information; Faculty of Life and Medical Sciences; Doshisha University; 1-3 Tatara Miyakodani, Kyotanabe-shi 610-0394 Kyoto Japan
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16
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Corma A, Navas J, Sabater MJ. Advances in One-Pot Synthesis through Borrowing Hydrogen Catalysis. Chem Rev 2018; 118:1410-1459. [DOI: 10.1021/acs.chemrev.7b00340] [Citation(s) in RCA: 542] [Impact Index Per Article: 90.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Avelino Corma
- Instituto de Tecnología
Química, Universitat Politècnica de València-Consejo Superior de Investigaciones Científicas, Avenida Los Naranjos s/n, 46022 Valencia, Spain
| | - Javier Navas
- Instituto de Tecnología
Química, Universitat Politècnica de València-Consejo Superior de Investigaciones Científicas, Avenida Los Naranjos s/n, 46022 Valencia, Spain
| | - Maria J. Sabater
- Instituto de Tecnología
Química, Universitat Politècnica de València-Consejo Superior de Investigaciones Científicas, Avenida Los Naranjos s/n, 46022 Valencia, Spain
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17
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Di Gregorio G, Mari M, Bartolucci S, Bartoccini F, Piersanti G. Divergent reactions of oxindoles with amino alcohols via the borrowing hydrogen process: oxindole ring opening vs. C3 alkylation. Org Chem Front 2018. [DOI: 10.1039/c8qo00184g] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Oxindoles react with N-acetyl amino alcohols to form tryptamine-derived oxindoles, whereas analogous reactions with N-alkyl amino alcohols lead to lactam formation via a relatively mild borrowing hydrogen process.
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Affiliation(s)
- Giovanni Di Gregorio
- Department of Biomolecular Sciences
- University of Urbino “Carlo Bo”
- 61029 Urbino
- Italy
| | - Michele Mari
- Department of Biomolecular Sciences
- University of Urbino “Carlo Bo”
- 61029 Urbino
- Italy
| | - Silvia Bartolucci
- Department of Biomolecular Sciences
- University of Urbino “Carlo Bo”
- 61029 Urbino
- Italy
| | - Francesca Bartoccini
- Department of Biomolecular Sciences
- University of Urbino “Carlo Bo”
- 61029 Urbino
- Italy
| | - Giovanni Piersanti
- Department of Biomolecular Sciences
- University of Urbino “Carlo Bo”
- 61029 Urbino
- Italy
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18
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Peña-López M, Piehl P, Elangovan S, Neumann H, Beller M. Manganese-Catalyzed Hydrogen-Autotransfer C−C Bond Formation: α-Alkylation of Ketones with Primary Alcohols. Angew Chem Int Ed Engl 2016; 55:14967-14971. [DOI: 10.1002/anie.201607072] [Citation(s) in RCA: 218] [Impact Index Per Article: 27.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2016] [Indexed: 11/10/2022]
Affiliation(s)
- Miguel Peña-López
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock; Albert-Einstein-Strasse 29a 18059 Rostock Germany
| | - Patrick Piehl
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock; Albert-Einstein-Strasse 29a 18059 Rostock Germany
| | - Saravanakumar Elangovan
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock; Albert-Einstein-Strasse 29a 18059 Rostock Germany
| | - Helfried Neumann
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock; Albert-Einstein-Strasse 29a 18059 Rostock Germany
| | - Matthias Beller
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock; Albert-Einstein-Strasse 29a 18059 Rostock Germany
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19
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Peña-López M, Piehl P, Elangovan S, Neumann H, Beller M. Manganese-Catalyzed Hydrogen-Autotransfer C−C Bond Formation: α-Alkylation of Ketones with Primary Alcohols. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201607072] [Citation(s) in RCA: 72] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Miguel Peña-López
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock; Albert-Einstein-Strasse 29a 18059 Rostock Germany
| | - Patrick Piehl
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock; Albert-Einstein-Strasse 29a 18059 Rostock Germany
| | - Saravanakumar Elangovan
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock; Albert-Einstein-Strasse 29a 18059 Rostock Germany
| | - Helfried Neumann
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock; Albert-Einstein-Strasse 29a 18059 Rostock Germany
| | - Matthias Beller
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock; Albert-Einstein-Strasse 29a 18059 Rostock Germany
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20
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Yun SH, Xia L, Kim SH, Lee YR. Rh(II)-Catalyzed Chemoselective Synthesis of 3-Substituted Oxindoles by C(sp2)−H and C(sp2)−N Functionalization of β-Enaminoesters. ASIAN J ORG CHEM 2016. [DOI: 10.1002/ajoc.201600226] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Sang Hyeon Yun
- School of Chemical Engineering; Yeungnam University; 214-1 Dae-dong Gyeongsan 712-749 Republic of Korea
| | - Likai Xia
- School of Chemical Engineering; Yeungnam University; 214-1 Dae-dong Gyeongsan 712-749 Republic of Korea
| | - Sung Hong Kim
- Analysis Research Division; Daegu Center; Korea Basic Science Institute; Daegu 702-701 Republic of Korea
| | - Yong Rok Lee
- School of Chemical Engineering; Yeungnam University; 214-1 Dae-dong Gyeongsan 712-749 Republic of Korea
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21
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Yao W, Ma X, Guo L, Jia X, Hu A, Huang Z. A highly efficient catalytic α-alkylation of unactivated amides using primary alcohols. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.05.074] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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22
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Nakamura Y, Putra AE, Oe Y, Ohta T. Development of Efficient Catalytic Systems Based on the “Borrowing Hydrogen” Methodology for Regioselective Alkylation of Heterocyclic Compounds and Synthesis of Amino Alcohols. J SYN ORG CHEM JPN 2016. [DOI: 10.5059/yukigoseikyokaishi.74.1182] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
| | | | - Yohei Oe
- Faculty of Life and Medical Sciences, Doshisha University
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23
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Huang F, Liu Z, Yu Z. C-Alkylierung von Ketonen und verwandten Verbindungen durch Alkohole: übergangsmetallkatalysierte Dehydrierung. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201507521] [Citation(s) in RCA: 80] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Fei Huang
- Dalian Institute of Chemical Physics; Chinese Academy of Sciences (CAS); 457 Zhongshan Road, Dalian Liaoning 116023 China
| | - Zhuqing Liu
- Dalian Institute of Chemical Physics; Chinese Academy of Sciences (CAS); 457 Zhongshan Road, Dalian Liaoning 116023 China
| | - Zhengkun Yu
- Dalian Institute of Chemical Physics; Chinese Academy of Sciences (CAS); 457 Zhongshan Road, Dalian Liaoning 116023 China
- State Key Laboratory of Organometallic Chemistry; Shanghai Institute of Organic Chemistry, CAS; Shanghai 200032 China
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24
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Huang F, Liu Z, Yu Z. C-Alkylation of Ketones and Related Compounds by Alcohols: Transition-Metal-Catalyzed Dehydrogenation. Angew Chem Int Ed Engl 2015; 55:862-75. [DOI: 10.1002/anie.201507521] [Citation(s) in RCA: 308] [Impact Index Per Article: 34.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2015] [Indexed: 12/12/2022]
Affiliation(s)
- Fei Huang
- Dalian Institute of Chemical Physics; Chinese Academy of Sciences (CAS); 457 Zhongshan Road, Dalian Liaoning 116023 China
| | - Zhuqing Liu
- Dalian Institute of Chemical Physics; Chinese Academy of Sciences (CAS); 457 Zhongshan Road, Dalian Liaoning 116023 China
| | - Zhengkun Yu
- Dalian Institute of Chemical Physics; Chinese Academy of Sciences (CAS); 457 Zhongshan Road, Dalian Liaoning 116023 China
- State Key Laboratory of Organometallic Chemistry; Shanghai Institute of Organic Chemistry, CAS; Shanghai 200032 China
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25
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Putra AE, Oe Y, Ohta T. Pd/C-Catalyzed Alkylation of Heterocyclic Nucleophiles with Alcohols through the “Borrowing Hydrogen” Process. European J Org Chem 2015. [DOI: 10.1002/ejoc.201501030] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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26
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Fujiya A, Nobuta T, Yamaguchi E, Tada N, Miura T, Itoh A. Aerobic photooxidative direct asymmetric aldol reactions of benzyl alcohols using water as the solvent. RSC Adv 2015. [DOI: 10.1039/c5ra05155j] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
We report an aerobic photooxidative direct asymmetric aldol reaction using water as the solvent.
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Affiliation(s)
- A. Fujiya
- Gifu Pharmaceutical University 1-25-4
- Gifu 501-1196
- Japan
| | - T. Nobuta
- Gifu Pharmaceutical University 1-25-4
- Gifu 501-1196
- Japan
| | - E. Yamaguchi
- Gifu Pharmaceutical University 1-25-4
- Gifu 501-1196
- Japan
| | - N. Tada
- Gifu Pharmaceutical University 1-25-4
- Gifu 501-1196
- Japan
| | - T. Miura
- Tokyo University of Pharmacy and Life Sciences
- Hachioji
- Japan
| | - A. Itoh
- Gifu Pharmaceutical University 1-25-4
- Gifu 501-1196
- Japan
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27
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Shimizu KI. Heterogeneous catalysis for the direct synthesis of chemicals by borrowing hydrogen methodology. Catal Sci Technol 2015. [DOI: 10.1039/c4cy01170h] [Citation(s) in RCA: 201] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
This review summarizes the recent examples of hydrogen transfer-type reactions using supported transition metal catalysts with special emphasis on the one-pot synthesis of chemicals by borrowing hydrogen methodology.
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Affiliation(s)
- Ken-ichi Shimizu
- Catalysis Research Center
- Hokkaido University
- Sapporo 001-0021
- Japan
- Elements Strategy Initiative for Catalysts and Batteries
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28
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Obora Y. Recent Advances in α-Alkylation Reactions using Alcohols with Hydrogen Borrowing Methodologies. ACS Catal 2014. [DOI: 10.1021/cs501269d] [Citation(s) in RCA: 339] [Impact Index Per Article: 33.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Yasushi Obora
- Department of Chemistry and Materials Engineering, Faculty of Chemistry, Materials and Bioengineering, Kansai University, Suita, Osaka 564-8680, Japan
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29
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Li B, Park Y, Chang S. Regiodivergent Access to Five- and Six-Membered Benzo-Fused Lactams: Ru-Catalyzed Olefin Hydrocarbamoylation. J Am Chem Soc 2014; 136:1125-31. [DOI: 10.1021/ja411913e] [Citation(s) in RCA: 76] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Bin Li
- Center
for Catalytic Hydrocarbon Functionalizations, Institute of Basic Science (IBS), Daejeon 305-701, Korea
- Department of Chemistry, Korea Advanced Institute of Science & Technology (KAIST), Daejeon 305-701, Korea
- State
Key Laboratory of Element-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, People’s Republic of China
| | - Yoonsu Park
- Center
for Catalytic Hydrocarbon Functionalizations, Institute of Basic Science (IBS), Daejeon 305-701, Korea
- Department of Chemistry, Korea Advanced Institute of Science & Technology (KAIST), Daejeon 305-701, Korea
| | - Sukbok Chang
- Center
for Catalytic Hydrocarbon Functionalizations, Institute of Basic Science (IBS), Daejeon 305-701, Korea
- Department of Chemistry, Korea Advanced Institute of Science & Technology (KAIST), Daejeon 305-701, Korea
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30
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Chaudhari C, Siddiki SMAH, Kon K, Tomita A, Tai Y, Shimizu KI. C-3 alkylation of oxindole with alcohols by Pt/CeO2 catalyst in additive-free conditions. Catal Sci Technol 2014. [DOI: 10.1039/c3cy00911d] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Pt-loaded CeO2 acted as an effective and recyclable catalyst for alkylation of oxindole with alcohols under additive-free conditions.
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Affiliation(s)
| | - S. M. A. Hakim Siddiki
- Elements Strategy Initiative for Catalysts and Batteries
- Kyoto University
- Kyoto 615-8520, Japan
| | - Kenichi Kon
- Catalysis Research Center
- Hokkaido University
- Sapporo 001-0021, Japan
| | - Atsuko Tomita
- Materials Research Institute for Sustainable Development
- National Institute of Advanced Industrial Science and Technology (AIST)
- Nagoya 463-8560, Japan
| | - Yutaka Tai
- Materials Research Institute for Sustainable Development
- National Institute of Advanced Industrial Science and Technology (AIST)
- Nagoya 463-8560, Japan
| | - Ken-ichi Shimizu
- Catalysis Research Center
- Hokkaido University
- Sapporo 001-0021, Japan
- Elements Strategy Initiative for Catalysts and Batteries
- Kyoto University
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31
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Scala A, Cordaro M, Grassi G, Piperno A, Barberi G, Cascio A, Risitano F. Direct synthesis of C3-mono-functionalized oxindoles from N-unprotected 2-oxindole and their antileishmanial activity. Bioorg Med Chem 2013; 22:1063-9. [PMID: 24433962 DOI: 10.1016/j.bmc.2013.12.039] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2013] [Revised: 12/06/2013] [Accepted: 12/17/2013] [Indexed: 12/11/2022]
Abstract
A novel approach for the synthesis of unprecedented C3-mono-functionalized indolin-2-ones is reported, starting from 2-oxindole and chalcones. The reactions proceed regioselectively under mild conditions, without di- and tri-alkylated side products. The new compounds have been evaluated in vitro for their antiproliferative effects against the protozoan Leishmania infantum. Interestingly, they appear able to kill L. infantum promastigotes and amastigotes, without significant cytotoxic effects.
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Affiliation(s)
- Angela Scala
- Dipartimento di Scienze Chimiche, Università di Messina, V.le F.Stagno d'Alcontres 31, Messina 98166, Italy; CNR-ISMN Istituto per lo Studio dei Materiali Nanostrutturati, UOS Palermo, c/o Dip. Scienze Chimiche, Università di Messina, V.le F.Stagno d'Alcontres 31, Messina 98166, Italy
| | - Massimiliano Cordaro
- Dipartimento di Scienze Chimiche, Università di Messina, V.le F.Stagno d'Alcontres 31, Messina 98166, Italy
| | - Giovanni Grassi
- Dipartimento di Scienze Chimiche, Università di Messina, V.le F.Stagno d'Alcontres 31, Messina 98166, Italy
| | - Anna Piperno
- Dipartimento di Scienze Chimiche, Università di Messina, V.le F.Stagno d'Alcontres 31, Messina 98166, Italy
| | - Giuseppina Barberi
- Dipartimento di Patologia Umana, Università di Messina, Viale Consolare Valeria 1, Messina 98125, Italy
| | - Antonio Cascio
- Dipartimento di Patologia Umana, Università di Messina, Viale Consolare Valeria 1, Messina 98125, Italy
| | - Francesco Risitano
- Dipartimento di Scienze Chimiche, Università di Messina, V.le F.Stagno d'Alcontres 31, Messina 98166, Italy.
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32
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Lee HJ, Lee S, Lim JW, Kim JN. An Expedient Synthesis of Oxindole Dimers by Direct Oxidative Dimerization of Oxindoles. B KOREAN CHEM SOC 2013. [DOI: 10.5012/bkcs.2013.34.8.2446] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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33
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Putra AE, Takigawa K, Tanaka H, Ito Y, Oe Y, Ohta T. Transition-Metal-Catalyzed Regioselective Alkylation of Indoles with Alcohols. European J Org Chem 2013. [DOI: 10.1002/ejoc.201300744] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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34
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Buccini M, Jeow SY, Byrne L, Skelton BW, Nguyen TM, Chai CLL, Piggott MJ. Bisannulation of 2,3-Dichloro-1,4-naphthoquinone witho-Nitrophenylacetic Acid Derivatives: A Succinct Synthesis of the ABCD Ring System of Alpkinidine. European J Org Chem 2013. [DOI: 10.1002/ejoc.201300227] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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35
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Guo L, Liu Y, Yao W, Leng X, Huang Z. Iridium-catalyzed selective α-alkylation of unactivated amides with primary alcohols. Org Lett 2013; 15:1144-7. [PMID: 23410220 DOI: 10.1021/ol400360g] [Citation(s) in RCA: 71] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
The first α-alkylation of unactivated amides with primary alcohols is described. An effective and robust iridium pincer complex has been developed for selective α-alkylation of tertiary and secondary acetamides involving a "borrowing hydrogen" methodology. The method is compatible with alcohols bearing various functional groups. This presents a convenient and environmentally benign protocol for α-alkylation of amides.
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Affiliation(s)
- Le Guo
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, 345 Lingling Road, Shanghai 200032, China
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36
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Kuwahara T, Fukuyama T, Ryu I. Ruthenium hydride/nitrogen tridentate ligand-catalyzed α-alkylation of acetamides with primary alcohols. RSC Adv 2013. [DOI: 10.1039/c3ra42834f] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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37
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Herth MM, Volk B, Pallagi K, Kofoed Bech L, Antoni FA, Knudsen GM, Kristensen JL. Synthesis and in vitro evaluation of oxindole derivatives as potential radioligands for 5-HT(7) receptor imaging with PET. ACS Chem Neurosci 2012; 3:1002-7. [PMID: 23259035 DOI: 10.1021/cn3001137] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2012] [Accepted: 08/31/2012] [Indexed: 01/15/2023] Open
Abstract
The most recently discovered serotonin (5-HT) receptor subtype, 5-HT(7), is considered to be associated with several CNS disorders. Noninvasive in vivo positron emission tomography (PET) studies of cerebral 5-HT(7) receptors could provide a significant advance in the understanding of the neurobiology and eventual dysfunctions of the 5-HT(7) receptor. To date, no appropriate 5-HT(7) receptor PET ligand has been developed. Here, we modified known 5-HT(7) selective phenylpiperazinyl-butyloxindole derivatives so that they may be labeled either with carbon-11 or fluorine-18. A set of potential 5-HT(7) ligands for PET molecular imaging was successfully synthesized. Two compounds (10 and 14) were tested against a range of targets. Both compounds display a promising in vitro profile with respect to PET imaging of the 5-HT(7) receptor in thalamic regions.
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Affiliation(s)
- Matthias M. Herth
- Center for Integrated Molecular Brain
Imaging, Rigshospitalet and University of Copenhagen, Blegdamsvej 9, DK-2100
Copenhagen, Denmark
- Department
of Drug Design and
Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100
Copenhagen, Denmark
| | - Balázs Volk
- Chemical
Research Division, Egis Pharmaceuticals Plc., P.O. Box 100, H-1475 Budapest,
Hungary
| | - Katalin Pallagi
- Division of Preclinical
Research, Egis Pharmaceuticals Plc., P.O.
Box 100, H-1475 Budapest,
Hungary
| | - Lasse Kofoed Bech
- Center for Integrated Molecular Brain
Imaging, Rigshospitalet and University of Copenhagen, Blegdamsvej 9, DK-2100
Copenhagen, Denmark
| | - Ferenc A. Antoni
- Division of Preclinical
Research, Egis Pharmaceuticals Plc., P.O.
Box 100, H-1475 Budapest,
Hungary
| | - Gitte M. Knudsen
- Center for Integrated Molecular Brain
Imaging, Rigshospitalet and University of Copenhagen, Blegdamsvej 9, DK-2100
Copenhagen, Denmark
| | - Jesper L. Kristensen
- Center for Integrated Molecular Brain
Imaging, Rigshospitalet and University of Copenhagen, Blegdamsvej 9, DK-2100
Copenhagen, Denmark
- Department
of Drug Design and
Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100
Copenhagen, Denmark
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38
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Yuan K, Jiang F, Sahli Z, Achard M, Roisnel T, Bruneau C. Iridium-Catalyzed Oxidant-Free Dehydrogenative CH Bond Functionalization: Selective Preparation of N-Arylpiperidines through Tandem Hydrogen Transfers. Angew Chem Int Ed Engl 2012; 51:8876-80. [DOI: 10.1002/anie.201204582] [Citation(s) in RCA: 113] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2012] [Indexed: 11/06/2022]
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39
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Yuan K, Jiang F, Sahli Z, Achard M, Roisnel T, Bruneau C. Iridium-Catalyzed Oxidant-Free Dehydrogenative CH Bond Functionalization: Selective Preparation of N-Arylpiperidines through Tandem Hydrogen Transfers. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201204582] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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40
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Bhat S, Sridharan V. Iridium catalysed chemoselective alkylation of 2′-aminoacetophenone with primary benzyl type alcohols under microwave conditions. Chem Commun (Camb) 2012; 48:4701-3. [DOI: 10.1039/c2cc31055d] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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41
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Zhang W, Dong X, Zhao W. Microwave-Assisted Solventless Reaction of Iridium-Catalyzed Alkylation of Amines with Alcohols in the Absence of Base. Org Lett 2011; 13:5386-9. [DOI: 10.1021/ol202281h] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Weixing Zhang
- School of Pharmacy, Fudan University, Shanghai, 201203, P. R. China, and Key Laboratory for Special Functional Materials of the Ministry of Education, Henan University, Kaifeng, 475004, P. R. China
| | - Xiaochun Dong
- School of Pharmacy, Fudan University, Shanghai, 201203, P. R. China, and Key Laboratory for Special Functional Materials of the Ministry of Education, Henan University, Kaifeng, 475004, P. R. China
| | - Weili Zhao
- School of Pharmacy, Fudan University, Shanghai, 201203, P. R. China, and Key Laboratory for Special Functional Materials of the Ministry of Education, Henan University, Kaifeng, 475004, P. R. China
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42
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Affiliation(s)
- Takeyuki Suzuki
- The Institute of Scientific and Industrial Research, Osaka University, Mihogaoka, Ibaraki, Osaka 567-0047, Japan
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43
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Liu G, Huang T, Zhang Y, Liang X, Li Y, Li H. C-3 alkylation of oxindole with alcohols catalyzed by an indene-functionalized mesoporous iridium catalyst. CATAL COMMUN 2011. [DOI: 10.1016/j.catcom.2010.12.021] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Watson AJA, Maxwell AC, Williams JMJ. Borrowing Hydrogen Methodology for Amine Synthesis under Solvent-Free Microwave Conditions. J Org Chem 2011; 76:2328-31. [DOI: 10.1021/jo102521a] [Citation(s) in RCA: 193] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Andrew J. A. Watson
- Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, U.K
| | - Aoife C. Maxwell
- GlaxoSmithKline Research and Development, Gunnels Wood Road, Stevenage SG1 2NY, U.K
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Sequential oxidation/asymmetric aldol reaction of primary alcohols by resin-supported catalysts. Tetrahedron Lett 2011. [DOI: 10.1016/j.tetlet.2010.12.008] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Reddy CR, Jithender E, Krishna G, Reddy GV, Jagadeesh B. A novel acid-catalyzed C5-alkylation of oxindoles using alcohols. Org Biomol Chem 2011; 9:3940-7. [DOI: 10.1039/c0ob01144d] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Grigg R, Whitney S, Sridharan V, Keep A, Derrick A. Iridium catalysed alkylation of 4-hydroxy coumarin, 4-hydroxy-2-quinolones and quinolin-4(1H)-one with alcohols under solvent free thermal conditions. Tetrahedron 2009. [DOI: 10.1016/j.tet.2009.07.027] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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