1
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Verma S, Singh V, Jat JL, Tiwari B. Amidation of Enones via Beckmann Rearrangement. J Org Chem 2024. [PMID: 38800985 DOI: 10.1021/acs.joc.3c02478] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/29/2024]
Abstract
The Beckmann reaction is one of the most atom-economical methods for the preparation of amides from ketones. Unlike ketones, the multiple competing reactivities of enones as well as the requirement of demanding reaction conditions for in situ generation of oximes have severely impacted the application of this reaction for the preparation of α,β-unsaturated amides. Herein, we describe the first chemoselective method for the direct conversion of enones to the corresponding α,β-unsaturated amides using N-Boc-O-tosylhydroxylamine.
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Affiliation(s)
- Saumya Verma
- Department of Chemistry, Babasaheb Bhimrao Ambedkar University (A Central University) Vidya Vihar, Raebareli Road, Lucknow 226025, Uttar Pradesh, India
| | - Vikram Singh
- Department of Biological and Synthetic Chemistry, Centre of Biomedical Research, SGPGIMS-Campus, Raebareli Road, Lucknow 226014, India
| | - Jawahar L Jat
- Department of Chemistry, Babasaheb Bhimrao Ambedkar University (A Central University) Vidya Vihar, Raebareli Road, Lucknow 226025, Uttar Pradesh, India
| | - Bhoopendra Tiwari
- Department of Biological and Synthetic Chemistry, Centre of Biomedical Research, SGPGIMS-Campus, Raebareli Road, Lucknow 226014, India
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2
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Chen X, Zhou XY, Liu HL, Ding C, Li JH. InCl 3/TfOH-Mediated Convenient Synthesis of 3-Alkylideneoxindoles from 2-Oxindoles with 1,3-Diones, Ketones, or Aldehydes. J Org Chem 2024; 89:4979-4989. [PMID: 38536713 DOI: 10.1021/acs.joc.4c00202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/06/2024]
Abstract
Two efficient and convenient methods for the synthesis of 3-alkylideneoxindoles are described in this paper. The InCl3/TfOH-mediated tandem Knoevenagel condensation-deacylation sequence of various 2-oxindoles with 1,3-diones or acetoacetate furnished 3-alkylideneoxindoles in satisfactory to excellent yields (up to >99% yield). Employing the reaction system, the condensation of 2-oxindoles with ketones or aldehydes also proceeded smoothly to produce 3-alkylideneoxindoles. This protocol can be amenable to scale up. The effect of acids on this condensation reaction and intermolecular competition experiments were investigated to understand the aspect of the reaction.
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Affiliation(s)
- Xia Chen
- School of Chemistry and Materials Engineering, Liupanshui Normal University, Liupanshui 553004, China
| | - Xiao-Yu Zhou
- School of Chemistry and Materials Engineering, Liupanshui Normal University, Liupanshui 553004, China
| | - Hai-Long Liu
- School of Chemistry and Materials Engineering, Liupanshui Normal University, Liupanshui 553004, China
| | - Chao Ding
- School of Chemistry and Materials Engineering, Liupanshui Normal University, Liupanshui 553004, China
| | - Jin-Hui Li
- School of Chemistry and Materials Engineering, Liupanshui Normal University, Liupanshui 553004, China
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3
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de Carvalho RL, Diogo EBT, Homölle SL, Dana S, da Silva Júnior EN, Ackermann L. The crucial role of silver(I)-salts as additives in C-H activation reactions: overall analysis of their versatility and applicability. Chem Soc Rev 2023; 52:6359-6378. [PMID: 37655711 PMCID: PMC10714919 DOI: 10.1039/d3cs00328k] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2023] [Indexed: 09/02/2023]
Abstract
Transition-metal catalyzed C-H activation reactions have been proven to be useful methodologies for the assembly of synthetically meaningful molecules. This approach bears intrinsic peculiarities that are important to be studied and comprehended in order to achieve its best performance. One example is the use of additives for the in situ generation of catalytically active species. This strategy varies according to the type of additive and the nature of the pre-catalyst that is being used. Thus, silver(I)-salts have proven to play an important role, due to the resulting high reactivity derived from the pre-catalysts of the main transition metals used so far. While being powerful and versatile, the use of silver-based additives can raise concerns, since superstoichiometric amounts of silver(I)-salts are typically required. Therefore, it is crucial to first understand the role of silver(I) salts as additives, in order to wisely overcome this barrier and shift towards silver-free systems.
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Affiliation(s)
- Renato L de Carvalho
- Institute of Exact Sciences, Department of Chemistry, Federal University of Minas Gerais-UFMG, 31270-901, Belo Horizonte, MG, Brazil.
| | - Emilay B T Diogo
- Institute of Exact Sciences, Department of Chemistry, Federal University of Minas Gerais-UFMG, 31270-901, Belo Horizonte, MG, Brazil.
| | - Simon L Homölle
- Institut für Organische und Biomolekulare Chemie and Wöhler Research Institute for Sustainable Chemistry, Georg-August-Universität Göttingen, Tammannstrasse 2, 37077 Göttingen, Germany.
| | - Suman Dana
- Institut für Organische und Biomolekulare Chemie and Wöhler Research Institute for Sustainable Chemistry, Georg-August-Universität Göttingen, Tammannstrasse 2, 37077 Göttingen, Germany.
| | - Eufrânio N da Silva Júnior
- Institute of Exact Sciences, Department of Chemistry, Federal University of Minas Gerais-UFMG, 31270-901, Belo Horizonte, MG, Brazil.
| | - Lutz Ackermann
- Institut für Organische und Biomolekulare Chemie and Wöhler Research Institute for Sustainable Chemistry, Georg-August-Universität Göttingen, Tammannstrasse 2, 37077 Göttingen, Germany.
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4
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Novikova D, Grigoreva T, Gurzhiy V, Tribulovich V. Is It Possible to Obtain a Product of the Desired Configuration from a Single Knoevenagel Condensation? Isomerization vs. Stereodefined Synthesis. Int J Mol Sci 2023; 24:11339. [PMID: 37511099 PMCID: PMC10379276 DOI: 10.3390/ijms241411339] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Revised: 07/07/2023] [Accepted: 07/10/2023] [Indexed: 07/30/2023] Open
Abstract
The biological activity of compounds directly depends on the three-dimensional arrangement of affinity fragments since a high degree of pharmacophore compliance with the binding site is required. 3-Benzylidene oxindoles are privileged structures due to their wide spectrum of biological activity, synthetic availability, and ease of modification. In particular, both kinase inhibitors and kinase activators can be found among 3-benzylidene oxindoles. In this work, we studied model compounds obtained via oxindole condensation with aldehydes and alkylphenones. These condensation products can exist in the form of E- and Z-isomers and also undergo isomerization in solutions. The factors causing isomeric transformation of these compounds were established. Comparative kinetic studies to obtain quantitative characteristics of UV-driven isomerization were first performed. The results obtained indicate dramatic differences in two subclasses, which should be considered when developing biologically active molecules.
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Affiliation(s)
- Daria Novikova
- Laboratory of Molecular Pharmacology, St. Petersburg State Institute of Technology (Technical University), St. Petersburg 190013, Russia
| | - Tatyana Grigoreva
- Laboratory of Molecular Pharmacology, St. Petersburg State Institute of Technology (Technical University), St. Petersburg 190013, Russia
| | - Vladislav Gurzhiy
- Crystallography Department, Institute of Earth Sciences, St. Petersburg State University, St. Petersburg 199034, Russia
| | - Vyacheslav Tribulovich
- Laboratory of Molecular Pharmacology, St. Petersburg State Institute of Technology (Technical University), St. Petersburg 190013, Russia
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5
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Liu Y, Ding S, Xu M, Xu J, Cheng D, Wang H, Xu X. Synthesis of arylacylated oxindoles via visible light‐promoted Smiles rearrangement. ChemistrySelect 2022. [DOI: 10.1002/slct.202202563] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Yihuo Liu
- College of Chemical Engineering Zhejiang University of Technology Hangzhou 310014 P. R. China
| | - Siyu Ding
- College of Chemical Engineering Zhejiang University of Technology Hangzhou 310014 P. R. China
| | - Mingli Xu
- College of Chemical Engineering Zhejiang University of Technology Hangzhou 310014 P. R. China
| | - Jinli Xu
- College of Chemical Engineering Zhejiang University of Technology Hangzhou 310014 P. R. China
| | - Dongping Cheng
- College of Pharmaceutical Sciences Zhejiang University of Technology Hangzhou 310014 P. R. China
| | - Hong Wang
- College of Chemical Engineering Zhejiang University of Technology Hangzhou 310014 P. R. China
| | - Xiaoliang Xu
- College of Chemical Engineering Zhejiang University of Technology Hangzhou 310014 P. R. China
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6
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Shen H, Du Y, Kan J, Su W. Synthesis of 3-substituted 2-oxindoles from secondary α-bromo-propionanilides via palladium-catalyzed intramolecular cyclization. Org Biomol Chem 2022; 20:3589-3597. [PMID: 35420109 DOI: 10.1039/d2ob00480a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In contrast to aromatic halides, coupling reactions involving oxidative addition of alkyl halides, especially secondary or tertiary halides, to transition metals tend to be more challenging. Herein a palladium-catalyzed intramolecular cyclization of α-bromo-propionanilides has been developed, delivering a series of 3-substituted 2-oxindoles in high yields. The method features easy to prepare starting materials, broad substrate scope and excellent functional group tolerance. A detailed mechanistic investigation has been performed.
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Affiliation(s)
- Hui Shen
- College of Chemistry & Materials Science, Fujian Normal University, Fuzhou 350007, P. R. China. .,State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, 155 Yangqiao Road West, Fuzhou 350002, P. R. China
| | - Yu Du
- College of Chemistry & Materials Science, Fujian Normal University, Fuzhou 350007, P. R. China. .,State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, 155 Yangqiao Road West, Fuzhou 350002, P. R. China
| | - Jian Kan
- College of Chemistry & Materials Science, Fujian Normal University, Fuzhou 350007, P. R. China. .,State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, 155 Yangqiao Road West, Fuzhou 350002, P. R. China
| | - Weiping Su
- College of Chemistry & Materials Science, Fujian Normal University, Fuzhou 350007, P. R. China. .,State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, 155 Yangqiao Road West, Fuzhou 350002, P. R. China.,Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China, Fuzhou 350108, P. R. China
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7
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Han YF, Lv GF, Li Y, Wu LJ, Ouyang XH, Li JH. Transient Chelating Group-Controlled Stereoselective Rh(I)-Catalyzed Silylative Aminocarbonylation of 2-Alkynylanilines: Entry to (Z)-3-(Silylmethylene)indolin-2-ones. Chem Sci 2022; 13:9425-9431. [PMID: 36092994 PMCID: PMC9383873 DOI: 10.1039/d2sc03009h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Accepted: 07/27/2022] [Indexed: 11/21/2022] Open
Abstract
A new, mild acryl transient chelating group-controlled stereoselective Rh(I)-catalyzed silylative aminocarbonylation of 2-alkynylanilines with CO and silanes for producing (Z)-3-(silylmethylene)indolin-2-ones is presented. By using an acryl transient chelating group 2-alkynylanilines...
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Affiliation(s)
- Ya-Fei Han
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University Nanchang 330063 China
| | - Gui-Fen Lv
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University Nanchang 330063 China
| | - Yang Li
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University Nanchang 330063 China
| | - Li-Jun Wu
- College of Sciences, Central South University of Forestry and Technology Changsha 410004 China
| | - Xuan-Hui Ouyang
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University Nanchang 330063 China
| | - Jin-Heng Li
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University Nanchang 330063 China
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Provincial Center for Research & Development of Natural Products, School of Chemical Science and Technology, Yunnan University Kunming Yunnan 650091 China
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University Lanzhou 730000 China
- School of Chemistry and Chemical Engineering, Henan Normal University Xinxiang Henan 453007 China
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8
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Oxindole synthesis via C H activation methods. ADVANCES IN HETEROCYCLIC CHEMISTRY 2022. [DOI: 10.1016/bs.aihch.2022.10.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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9
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Antifungal Activity of N-(4-Halobenzyl)amides against Candida spp. and Molecular Modeling Studies. Int J Mol Sci 2021; 23:ijms23010419. [PMID: 35008845 PMCID: PMC8745543 DOI: 10.3390/ijms23010419] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2021] [Revised: 12/08/2021] [Accepted: 12/10/2021] [Indexed: 12/28/2022] Open
Abstract
Fungal infections remain a high-incidence worldwide health problem that is aggravated by limited therapeutic options and the emergence of drug-resistant strains. Cinnamic and benzoic acid amides have previously shown bioactivity against different species belonging to the Candida genus. Here, 20 cinnamic and benzoic acid amides were synthesized and tested for inhibition of C. krusei ATCC 14243 and C. parapsilosis ATCC 22019. Five compounds inhibited the Candida strains tested, with compound 16 (MIC = 7.8 µg/mL) producing stronger antifungal activity than fluconazole (MIC = 16 µg/mL) against C. krusei ATCC 14243. It was also tested against eight Candida strains, including five clinical strains resistant to fluconazole, and showed an inhibitory effect against all strains tested (MIC = 85.3–341.3 µg/mL). The MIC value against C. krusei ATCC 6258 was 85.3 mcg/mL, while against C. krusei ATCC 14243, it was 10.9 times smaller. This strain had greater sensitivity to the antifungal action of compound 16. The inhibition of C. krusei ATCC 14243 and C. parapsilosis ATCC 22019 was also achieved by compounds 2, 9, 12, 14 and 15. Computational experiments combining target fishing, molecular docking and molecular dynamics simulations were performed to study the potential mechanism of action of compound 16 against C. krusei. From these, a multi-target mechanism of action is proposed for this compound that involves proteins related to critical cellular processes such as the redox balance, kinases-mediated signaling, protein folding and cell wall synthesis. The modeling results might guide future experiments focusing on the wet-lab investigation of the mechanism of action of this series of compounds, as well as on the optimization of their inhibitory potency.
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10
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Rodríguez JF, Zhang A, Bajohr J, Whyte A, Mirabi B, Lautens M. Cycloisomerization of Carbamoyl Chlorides in Hexafluoroisopropanol: Stereoselective Synthesis of Chlorinated Methylene Oxindoles and Quinolinones. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202103323] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- José F. Rodríguez
- Davenport Research Laboratories Department of Chemistry University of Toronto 80 St. George Street Toronto Ontario M5S 3H6 Canada
| | - Anji Zhang
- Davenport Research Laboratories Department of Chemistry University of Toronto 80 St. George Street Toronto Ontario M5S 3H6 Canada
| | - Jonathan Bajohr
- Davenport Research Laboratories Department of Chemistry University of Toronto 80 St. George Street Toronto Ontario M5S 3H6 Canada
| | - Andrew Whyte
- Davenport Research Laboratories Department of Chemistry University of Toronto 80 St. George Street Toronto Ontario M5S 3H6 Canada
| | - Bijan Mirabi
- Davenport Research Laboratories Department of Chemistry University of Toronto 80 St. George Street Toronto Ontario M5S 3H6 Canada
| | - Mark Lautens
- Davenport Research Laboratories Department of Chemistry University of Toronto 80 St. George Street Toronto Ontario M5S 3H6 Canada
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11
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Rodríguez JF, Zhang A, Bajohr J, Whyte A, Mirabi B, Lautens M. Cycloisomerization of Carbamoyl Chlorides in Hexafluoroisopropanol: Stereoselective Synthesis of Chlorinated Methylene Oxindoles and Quinolinones. Angew Chem Int Ed Engl 2021; 60:18478-18483. [PMID: 34157191 DOI: 10.1002/anie.202103323] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2021] [Revised: 05/24/2021] [Indexed: 12/20/2022]
Abstract
Hexafluoroisopropanol (HFIP) was employed as an additive for the generation of 3-(chloromethylene)oxindoles via the chloroacylation of alkyne-tethered carbamoyl chlorides. This reaction avoids the use of a metal catalyst and accesses products in high yields and stereoselectivities. Additionally, this reaction is scalable and proved amenable to a series of product derivatizations, including the synthesis of nintedanib. The reactivity of alkene-tethered carbamoyl chlorides with hexafluoroisopropanol (HFIP) was harnessed towards the synthesis of 2-quinolinones.
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Affiliation(s)
- José F Rodríguez
- Davenport Research Laboratories, Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario, M5S 3H6, Canada
| | - Anji Zhang
- Davenport Research Laboratories, Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario, M5S 3H6, Canada
| | - Jonathan Bajohr
- Davenport Research Laboratories, Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario, M5S 3H6, Canada
| | - Andrew Whyte
- Davenport Research Laboratories, Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario, M5S 3H6, Canada
| | - Bijan Mirabi
- Davenport Research Laboratories, Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario, M5S 3H6, Canada
| | - Mark Lautens
- Davenport Research Laboratories, Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario, M5S 3H6, Canada
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12
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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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13
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Luo X, Zhang Q, Jiang Y, Wang C, Song X, Li J, Yan Q, Chan ASC, Zou Y. Copper-Catalyzed Lactamization of ( E)-2-(2-Bromophenyl)-3-arylacrylamides for the Synthesis of ( E)-3-Arylideneindolin-2-ones. J Org Chem 2021; 86:6698-6710. [PMID: 33881860 DOI: 10.1021/acs.joc.1c00452] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
A copper-catalyzed, ligand-free intramolecular C-N coupling of (E)-2-(2-bromophenyl)-3-arylacrylamides has been developed. This protocol provides an efficient and practical synthetic route for the biologically important (E)-3-arylideneindolin-2-ones from o-bromophenylacetic acids and aromatic or conjugated alkenyl aldehydes. Readily available starting materials, mild and noble metal-free conditions, high efficiency, and good tolerability for phenolic hydroxyl groups make this approach attractive and applicable.
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Affiliation(s)
- Xiang Luo
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou 510006, People's Republic of China
| | - Qianzhong Zhang
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, People's Republic of China
| | - Yi Jiang
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, People's Republic of China
| | - Chengxin Wang
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou 510006, People's Republic of China
| | - Xianheng Song
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, People's Republic of China
| | - Jianheng Li
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, People's Republic of China
| | - Qinfang Yan
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, People's Republic of China
| | - Albert S C Chan
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, People's Republic of China.,Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery, Guangzhou 510000, People's Republic of China
| | - Yong Zou
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, People's Republic of China.,Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery, Guangzhou 510000, People's Republic of China
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14
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Huo YW, Yao L, Qi X, Wu XF. Nickel-catalyzed reductive aminocarbonylation of vinyl triflates with nitro compounds for the synthesis of α,β-unsaturated amides. Org Chem Front 2021. [DOI: 10.1039/d1qo01508g] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
A nickel-catalyzed reductive aminocarbonylation reaction for the synthesis of α,β-unsaturated amides has been described.
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Affiliation(s)
- Yong-Wang Huo
- Department of Chemistry, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou, Zhejiang 310018, People's Republic of China
| | - Lingyun Yao
- Department of Chemistry, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou, Zhejiang 310018, People's Republic of China
| | - Xinxin Qi
- Department of Chemistry, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou, Zhejiang 310018, People's Republic of China
| | - Xiao-Feng Wu
- Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 116023, Dalian, Liaoning, China
- Leibniz-InstitutfürKatalysee.V., Albert-Einstein-Straße 29a, Rostock 18059, Germany
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15
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Gopalaiah K, Tiwari A. Synthesis of (
E
)‐3‐Alkylideneindolin‐2‐ones by an Iron‐Catalyzed Aerobic Oxidative Condensation of Csp
3
–H Bonds of Oxindoles and Benzylamines. European J Org Chem 2020. [DOI: 10.1002/ejoc.202001300] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
| | - Ankit Tiwari
- Department of Chemistry University of Delhi 110007 Delhi India
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16
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Lee H, Cho S, Lee Y, Jung B. Stereoselective Formal Hydroamidation of Si-Substituted Arylacetylenes with DIBAL-H and Isocyanates: Synthesis of ( E)- and ( Z)-α-Silyl-α,β-unsaturated Amides. J Org Chem 2020; 85:12024-12035. [PMID: 32909750 DOI: 10.1021/acs.joc.0c01903] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
An efficient and stereoselective method for the synthesis of (E)- and (Z)-α-silyl-α,β-unsaturated amides and its synthetic applications are presented herein. The solvent-controlled hydroaluminations of Si-substituted alkynes with DIBAL-H generate diastereomerically enriched alkenylaluminum reagents that are directly reacted with isocyanates at ambient temperature to afford α-silyl-α,β-unsaturated amides in high yields with retained stereoselectivity. In particular, this process enables the synthesis of a broad range of (E)-α-silyl-α,β-unsaturated amides, which are the less studied isomers. The synthetic utility of this method is highlighted by its short reaction time, ease of purification, easily accessible substrates and reagents, gram-scale synthesis, and the further transformations of C-Si bonds into C-H, C-X, and C-C bonds.
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Affiliation(s)
- Hanseul Lee
- Department of Chemistry, Kwangwoon University, Seoul 01897, Republic of Korea
| | - Soohong Cho
- Department of Chemistry, Kwangwoon University, Seoul 01897, Republic of Korea
| | - Yunmi Lee
- Department of Chemistry, Kwangwoon University, Seoul 01897, Republic of Korea
| | - Byunghyuck Jung
- Department of Emerging Materials Science, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu 42988, Republic of Korea
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17
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Raji Reddy C, Ganesh V, Singh AK. E- Z isomerization of 3-benzylidene-indolin-2-ones using a microfluidic photo-reactor. RSC Adv 2020; 10:28630-28634. [PMID: 35520055 PMCID: PMC9055887 DOI: 10.1039/d0ra05288d] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Accepted: 07/21/2020] [Indexed: 01/17/2023] Open
Abstract
Here, we report controlled E-Z isomeric motion of the functionalized 3-benzylidene-indolin-2-ones under various solvents, temperature, light sources, and most importantly effective enhancement of light irradiance in microfluidic photoreactor conditions. Stabilization of the E-Z isomeric motion is failed in batch process, which might be due to the exponential decay of light intensity, variable irradiation, low mixing, low heat exchange, low photon flux etc. This photo-μ-flow light driven motion is further extended to the establishment of a photostationary state under solar light irradiation.
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Affiliation(s)
- Chada Raji Reddy
- Division of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology Hyderabad-500007 India
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad 201002 Uttar Pradesh India
| | - Veeramalla Ganesh
- Division of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology Hyderabad-500007 India
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad 201002 Uttar Pradesh India
| | - Ajay K Singh
- Division of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology Hyderabad-500007 India
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18
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Hong Seo J, Park S, Jung Shin K. Stereoselective Synthesis of (Z)-3-Arylidene-2-oxindoles via a Palladium-Catalyzed Tandem Reaction. HETEROCYCLES 2020. [DOI: 10.3987/com-20-14340] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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19
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Yang J, Zhang G, Wang Z, Xiao Z, Wen H. Synthesis of [13
C2,
15
N]-1,3-2H
-1-benzyl-(Z
)-3-(benzylidene)indolin-2-one. J Labelled Comp Radiopharm 2019; 62:920-924. [DOI: 10.1002/jlcr.3796] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2019] [Revised: 07/27/2019] [Accepted: 07/29/2019] [Indexed: 12/27/2022]
Affiliation(s)
- Jixia Yang
- School of Chemistry and Chemical Engineering; Beijing Institute of Technology; Beijing China
| | - Gongzheng Zhang
- School of Chemistry and Chemical Engineering; Beijing Institute of Technology; Beijing China
| | - Zhaoyang Wang
- School of Chemistry and Chemical Engineering; Beijing Institute of Technology; Beijing China
| | - Zhanxiong Xiao
- School of Chemistry and Chemical Engineering; Beijing Institute of Technology; Beijing China
| | - Hongliang Wen
- School of Chemistry and Chemical Engineering; Beijing Institute of Technology; Beijing China
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20
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Abstract
N-Aryl amides are an important class of compounds in pharmaceutical and agrochemical chemistry. Rapid and low-cost synthesis of N-aryl amides remains in high demand. Herein, we disclose an operationally simple process to access N-aryl amides directly from readily available nitroarenes and carboxylic acids as coupling substrates. This method involves the in situ activation of carboxylic acids to acyloxyphosphonium salt for one-pot amidation, without the need for isolation of the corresponding synthetic intermediates. Furthermore, the ease of preparation and workup allow the quick and efficient synthesis of a wide range of N-aryl amides, including several amide-based druglike and agrochemical molecules.
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Affiliation(s)
- Shao-Peng Wang
- Department of Chemistry, Tianjin Key Laboratory of Molecular Optoelectronic Sciences, and Tianjin Collaborative Innovation Center of Chemical Science & Engineering, Tianjin University, Tianjin 300072; and Joint School of NUS & TJU , International Campus of Tianjin University , Fuzhou 350207 , P. R. of China
| | - Chi Wai Cheung
- Department of Chemistry, Tianjin Key Laboratory of Molecular Optoelectronic Sciences, and Tianjin Collaborative Innovation Center of Chemical Science & Engineering, Tianjin University, Tianjin 300072; and Joint School of NUS & TJU , International Campus of Tianjin University , Fuzhou 350207 , P. R. of China
| | - Jun-An Ma
- Department of Chemistry, Tianjin Key Laboratory of Molecular Optoelectronic Sciences, and Tianjin Collaborative Innovation Center of Chemical Science & Engineering, Tianjin University, Tianjin 300072; and Joint School of NUS & TJU , International Campus of Tianjin University , Fuzhou 350207 , P. R. of China
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21
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Wang D, Guo W, Zhou Q, Liu L, Lu Y, Liu Y. Hydroaminocarbonylation of Alkynes to Produce Primary
α
,
β
‐Unsaturated Amides Using NH
4
HCO
3
Dually as Ammonia Surrogate and Brønsted Acid Additive. ChemCatChem 2018. [DOI: 10.1002/cctc.201800791] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Dong‐Liang Wang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes School of Chemistry & Molecular EngineeringEast China Normal University 3663 North Zhongshan Road Shanghai 200062 P.R. China
| | - Wen‐Di Guo
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes School of Chemistry & Molecular EngineeringEast China Normal University 3663 North Zhongshan Road Shanghai 200062 P.R. China
| | - Qing Zhou
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes School of Chemistry & Molecular EngineeringEast China Normal University 3663 North Zhongshan Road Shanghai 200062 P.R. China
| | - Lei Liu
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes School of Chemistry & Molecular EngineeringEast China Normal University 3663 North Zhongshan Road Shanghai 200062 P.R. China
| | - Yong Lu
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes School of Chemistry & Molecular EngineeringEast China Normal University 3663 North Zhongshan Road Shanghai 200062 P.R. China
| | - Ye Liu
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes School of Chemistry & Molecular EngineeringEast China Normal University 3663 North Zhongshan Road Shanghai 200062 P.R. China
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22
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Ji W, Liu YA, Liao X. Transition-Metal-Free Synthesis of N-Hydroxy Oxindoles by an Aza-Nazarov-Type Reaction Involving Azaoxyallyl Cations. Angew Chem Int Ed Engl 2018; 55:13286-13289. [PMID: 27709823 DOI: 10.1002/anie.201607177] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2016] [Indexed: 01/15/2023]
Abstract
A novel transition-metal-free method to construct N-hydroxy oxindoles by an aza-Nazarov-type reaction involving azaoxyallyl cation intermediates is described. A variety of functional groups were tolerated under the weak basic reaction conditions and at room temperature. A one-pot process was also developed to make the reaction even more practical. This method provides alternative access to oxindoles and their biologically active derivatives.
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Affiliation(s)
- Wenzhi Ji
- School of Pharmaceutical Sciences, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Tsinghua University, China
| | - Yahu A Liu
- Medicinal Chemistry, Genomics Institute of the Novartis Research Foundation, San Diego, CA, 92121, USA
| | - Xuebin Liao
- School of Pharmaceutical Sciences, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Tsinghua University, China.
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23
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Peng JB, Geng HQ, Li D, Qi X, Ying J, Wu XF. Palladium-Catalyzed Carbonylative Synthesis of α,β-Unsaturated Amides from Styrenes and Nitroarenes. Org Lett 2018; 20:4988-4993. [DOI: 10.1021/acs.orglett.8b02109] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Jin-Bao Peng
- Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou, Zhejiang 310018, People’s Republic of China
| | - Hui-Qing Geng
- Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou, Zhejiang 310018, People’s Republic of China
| | - Da Li
- Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou, Zhejiang 310018, People’s Republic of China
| | - Xinxin Qi
- Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou, Zhejiang 310018, People’s Republic of China
| | - Jun Ying
- Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou, Zhejiang 310018, People’s Republic of China
| | - Xiao-Feng Wu
- Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou, Zhejiang 310018, People’s Republic of China
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock, Albert-Einstein-Straße 29a, Rostock 18059, Germany
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24
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Letribot B, Delatouche R, Rouillard H, Bonnet A, Chérouvrier JR, Domon L, Besson T, Thiéry V. Synthesis of 2-Mercapto-(2-Oxoindolin-3-Ylidene)Acetonitriles from 3-(4-Chloro-5 H-1,2,3-Dithiazol-5-Ylidene)Indolin-2-ones. Molecules 2018; 23:molecules23061390. [PMID: 29890669 PMCID: PMC6100569 DOI: 10.3390/molecules23061390] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2018] [Revised: 06/04/2018] [Accepted: 06/06/2018] [Indexed: 12/02/2022] Open
Abstract
Alkylidene oxindoles are important functional moieties and building blocks in pharmaceutical and synthetic chemistry. Our interest in biologically active compounds focused our studies on the synthesis of novel oxindoles, bearing on the exocyclic double bond at the C8, CN, and S groups. Extending the potential applications of Appel’s salt, we developed a new synthetic approach by investigating the reactions of C5-substituted 2-oxindoles with 4,5-dichloro-1,2,3-dithiazolium chloride (Appel’s salt) to give original (Z)-3-(4-chloro-5H-1,2,3-dithiazol-5-ylidene)indolin-2-one derivatives, and new 2-mercapto-(2-oxoindolin-3-ylidene)acetonitriles via a dithiazole ring-opening reaction. The work described in this article represents further applications of Appel’s salt in the conception of novel heterocyclic rings, in an effort to access original bioactive compounds. Fifteen new compounds were prepared and fully characterized.
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Affiliation(s)
- Boris Letribot
- University of La Rochelle, UMR CNRS 7266 LIENSs, 17000 La Rochelle, France.
| | - Régis Delatouche
- University of La Rochelle, UMR CNRS 7266 LIENSs, 17000 La Rochelle, France.
| | - Hervé Rouillard
- University of La Rochelle, UMR CNRS 7266 LIENSs, 17000 La Rochelle, France.
| | - Antoine Bonnet
- University of La Rochelle, UMR CNRS 7266 LIENSs, 17000 La Rochelle, France.
| | | | - Lisianne Domon
- University of La Rochelle, UMR CNRS 7266 LIENSs, 17000 La Rochelle, France.
| | - Thierry Besson
- Normandie University, UNIROUEN, INSA Rouen, CNRS, COBRA UMR 6014, 76000 Rouen, France.
| | - Valérie Thiéry
- University of La Rochelle, UMR CNRS 7266 LIENSs, 17000 La Rochelle, France.
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25
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Shirai T, Yamamoto Y. Asymmetric Hydroarylation of Unsaturated Bond via C-H Functionalization by Cationic Iridium/Bisphosphoramidite Catalyst. J SYN ORG CHEM JPN 2018. [DOI: 10.5059/yukigoseikyokaishi.76.604] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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26
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Visible light induced hydrodifluoromethylation of alkenes derived from oxindoles with (difluoromethyl)triphenylphosphonium bromide. J Fluor Chem 2018. [DOI: 10.1016/j.jfluchem.2018.01.013] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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27
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Wang HC, Tao J, Bai WY, Xie ZY, Li H, Ren X, Xu YX. Synthesis of a Thiophene Analogue of Isoindigo by C-H Activation/Oxidative Cyclization and Application of Its Copolymeric Materials to Organic Transistors. European J Org Chem 2018. [DOI: 10.1002/ejoc.201701663] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Hua-Chun Wang
- College of Polymer Science & Engineering; State Key Laboratory of Polymer Materials Engineering; Sichuan University; 610065 Chengdu China
| | - Jingwei Tao
- Key Laboratory of Synthetic and Self-Assembly; Chemistry for Organic Functional Molecules; Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; 200032 Shanghai China
| | - Wei-Yun Bai
- College of Polymer Science & Engineering; State Key Laboratory of Polymer Materials Engineering; Sichuan University; 610065 Chengdu China
| | - Zi-Yi Xie
- College of Polymer Science & Engineering; State Key Laboratory of Polymer Materials Engineering; Sichuan University; 610065 Chengdu China
| | - Hongxiang Li
- Key Laboratory of Synthetic and Self-Assembly; Chemistry for Organic Functional Molecules; Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; 200032 Shanghai China
| | - Xiancheng Ren
- College of Polymer Science & Engineering; State Key Laboratory of Polymer Materials Engineering; Sichuan University; 610065 Chengdu China
| | - Yun-Xiang Xu
- College of Polymer Science & Engineering; State Key Laboratory of Polymer Materials Engineering; Sichuan University; 610065 Chengdu China
- Key Laboratory of Synthetic and Self-Assembly; Chemistry for Organic Functional Molecules; Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; 200032 Shanghai China
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28
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Pandya VG, Mhaske SB. Divergent Synthesis of Oxindolylidene Acetates and Spirooxindolopyrrolidones from Arynes. Org Lett 2018. [DOI: 10.1021/acs.orglett.7b03661] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Virat G. Pandya
- Division of Organic Chemistry, CSIR-National Chemical Laboratory, Pune 411008, India
- Academy of Scientific and Innovative Research (AcSIR), CSIR-National Chemical Laboratory Campus, Pune 411008, India
| | - Santosh B. Mhaske
- Division of Organic Chemistry, CSIR-National Chemical Laboratory, Pune 411008, India
- Academy of Scientific and Innovative Research (AcSIR), CSIR-National Chemical Laboratory Campus, Pune 411008, India
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29
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Kilaru P, Acharya SP, Zhao P. A tethering directing group strategy for ruthenium-catalyzed intramolecular alkene hydroarylation. Chem Commun (Camb) 2018; 54:924-927. [PMID: 29318225 DOI: 10.1039/c7cc08704g] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report a new catalyst design for N-heterocycle synthesis that utilizes an alkene-tethered amide moiety as a directing group for aromatic C-H activation. This tethering directing group strategy is demonstrated in a ruthenium-catalyzed intramolecular alkene hydroarylation with N-aryl acrylamides to form oxindole products.
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Affiliation(s)
- Praveen Kilaru
- Department of Chemistry and Biochemistry, North Dakota State University, Fargo, ND 58108-6050, USA.
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30
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Challa C, Ravindran J, Konai MM, Varughese S, Jacob J, Kumar BSD, Haldar J, Lankalapalli RS. Expedient Synthesis of Indolo[2,3- b]quinolines, Chromeno[2,3- b]indoles, and 3-Alkenyl-oxindoles from 3,3'-Diindolylmethanes and Evaluation of Their Antibiotic Activity against Methicillin-Resistant Staphylococcus aureus. ACS OMEGA 2017; 2:5187-5195. [PMID: 30023741 PMCID: PMC6044809 DOI: 10.1021/acsomega.7b00840] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2017] [Accepted: 08/16/2017] [Indexed: 05/09/2023]
Abstract
Easily accessible 3,3'-diindolylmethanes (DIMs) were utilized to generate a focused library of indolo[2,3-b]quinolines (2), chromeno[2,3-b]indoles (3), and 3-alkenyl-oxindoles (4) under 2,3-Dichloro-5,6-dicyano-1,4-benzoquinone (DDQ)-mediated oxidative conditions. DIMs with ortho-NHTosyl (NHTs) phenyl group afforded indolo[2,3-b]quinolines (2), whereas DIMs with ortho-hydroxy phenyl groups yielded chromeno[2,3-b]indoles (3) and 3-alkenyl-oxindoles (4). The mild conditions and excellent yields of the products make this method a good choice to access a diverse library of bioactive molecules from a common starting material. Two optimized compounds 2a and 2n displayed excellent activity against clinical isolates of methicillin-resistant Staphylococcus aureus (MRSA). Compound 2a showed the minimum inhibitory concentration values in the concentration between 1 and 4 μg/mL, whereas compound 2n revealed the values of 1-2 μg/mL. Furthermore, both the compounds were highly bactericidal and capable to kill the MRSA completely within 360 min. Collectively, the results suggested that both compounds 2a and 2n possess enormous potential to be developed as anti-MRSA agents.
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Affiliation(s)
- Chandrasekhar Challa
- Chemical
Sciences and Technology Division and Academy of Scientific
and Innovative Research (AcSIR) and Agro-Processing and Technology Division, CSIR-National Institute for Interdisciplinary Science
and Technology (CSIR-NIIST), Thiruvananthapuram 695019, Kerala, India
| | - Jaice Ravindran
- Chemical
Sciences and Technology Division and Academy of Scientific
and Innovative Research (AcSIR) and Agro-Processing and Technology Division, CSIR-National Institute for Interdisciplinary Science
and Technology (CSIR-NIIST), Thiruvananthapuram 695019, Kerala, India
| | - Mohini Mohan Konai
- Antimicrobial
Research Laboratory, New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru 560064, Karnataka, India
| | - Sunil Varughese
- Chemical
Sciences and Technology Division and Academy of Scientific
and Innovative Research (AcSIR) and Agro-Processing and Technology Division, CSIR-National Institute for Interdisciplinary Science
and Technology (CSIR-NIIST), Thiruvananthapuram 695019, Kerala, India
| | - Jubi Jacob
- Chemical
Sciences and Technology Division and Academy of Scientific
and Innovative Research (AcSIR) and Agro-Processing and Technology Division, CSIR-National Institute for Interdisciplinary Science
and Technology (CSIR-NIIST), Thiruvananthapuram 695019, Kerala, India
| | - B. S. Dileep Kumar
- Chemical
Sciences and Technology Division and Academy of Scientific
and Innovative Research (AcSIR) and Agro-Processing and Technology Division, CSIR-National Institute for Interdisciplinary Science
and Technology (CSIR-NIIST), Thiruvananthapuram 695019, Kerala, India
| | - Jayanta Haldar
- Antimicrobial
Research Laboratory, New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru 560064, Karnataka, India
| | - Ravi S. Lankalapalli
- Chemical
Sciences and Technology Division and Academy of Scientific
and Innovative Research (AcSIR) and Agro-Processing and Technology Division, CSIR-National Institute for Interdisciplinary Science
and Technology (CSIR-NIIST), Thiruvananthapuram 695019, Kerala, India
- E-mail:
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31
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Miao B, Zheng Y, Wu P, Li S, Ma S. Bis(cycloocta-1,5-diene)nickel-Catalyzed Carbon Dioxide Fixation for the Stereoselective Synthesis of 3-Alkylidene-2-indolinones. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201700086] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Bukeyan Miao
- Shanghai Key Laboratory of Green Chemistry and Chemical Process, Department of Chemistry; East China Normal University; 3663 North Zhongshan Lu Shanghai 200062 People's Republic of China
| | - Yangguangyan Zheng
- Department of Chemistry; Fudan University; 220 Handan Lu Shanghai 200433 People's Republic of China
| | - Penglin Wu
- Department of Chemistry; Fudan University; 220 Handan Lu Shanghai 200433 People's Republic of China
| | - Suhua Li
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; 345 Lingling Lu Shanghai 200032 People's Republic of China
| | - Shengming Ma
- Department of Chemistry; Fudan University; 220 Handan Lu Shanghai 200433 People's Republic of China
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; 345 Lingling Lu Shanghai 200032 People's Republic of China
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32
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Sha F, Alper H. Ligand- and Additive-Controlled Pd-Catalyzed Aminocarbonylation of Alkynes with Aminophenols: Highly Chemo- and Regioselective Synthesis of α,β-Unsaturated Amides. ACS Catal 2017. [DOI: 10.1021/acscatal.7b00367] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Feng Sha
- Key
Lab for Advanced Materials and Institute of Fine Chemicals, School
of Chemistry and Molecular Engineering, East China University of Science and Technology, Meilong Road 130, Shanghai, People’s Republic of China
- Centre
for Catalysis Research and Innovation, Department of Chemistry and
Biomolecular Sciences, University of Ottawa, 10 Marie Curie, Ottawa, Ontario K1N 6N5, Canada
| | - Howard Alper
- 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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33
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Delong W, Lanying W, Yongling W, Shuang S, Juntao F, Xing Z. Natural α-methylenelactam analogues: Design, synthesis and evaluation of α-alkenyl-γ and δ-lactams as potential antifungal agents against Colletotrichum orbiculare. Eur J Med Chem 2017; 130:286-307. [PMID: 28254700 DOI: 10.1016/j.ejmech.2017.02.050] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2016] [Revised: 02/18/2017] [Accepted: 02/20/2017] [Indexed: 12/27/2022]
Abstract
In our continued efforts to improve the potential utility of the α-methylene-γ-lactone scaffold, 62 new and 59 known natural α-methylenelactam analogues including α-methylene-γ-lactams, α-arylidene-γ and δ-lactams, and 3-arylideneindolin-2-ones were synthesized as the bioisosteric analogues of the α-methylenelactone scaffold. The results of antifungal and cytotoxic activity indicated that among these derivatives compound (E)-1-(2, 6-dichlorobenzyl)-3-(2-fluorobenzylidene) pyrrolidin-2-one (Py51) possessed good selectivity with the highest antifungal activity against Colletotrichum orbiculare with IC50 = 10.4 μM but less cytotoxic activity with IC50 = 141.2 μM (against HepG2 cell line) and 161.2 μM (against human hepatic L02 cell line). Ultrastructural change studies performed by transmission electron microscope showed that Py51 could cause important cell morphological changes in C. orbiculare, such as plasma membrane detached from cell wall, cell wall thickening, mitochondria disruption, a dramatic increase in vacuolation, and eventually a complete loss in the integrity of organelles. Significantly, mitochondria appeared one of the primary targets, as confirmed by their remarkably aberrant morphological changes. Analysis of structure-activity relationships revealed that incorporation of the aryl group into the α-exo-methylene and the N-benzyl substitution increased the activity. Meanwhile, the α-arylidene-γ-lactams have superiority in selectivity over the 3-arylideneindolin-2-ones. Based on the results, the N-benzyl substituted α-(2-fluorophenyl)-γ-lactam was identified as the most promising natural-based scaffold for further discovering and developing improved crop-protection agents.
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Affiliation(s)
- Wang Delong
- Research & Development Center of Biorational Pesticide, Key Laboratory of Plant Protection Resources and Pest Management of Ministry of Education, Northwest A&F University, Yangling 712100, China
| | - Wang Lanying
- Research & Development Center of Biorational Pesticide, Key Laboratory of Plant Protection Resources and Pest Management of Ministry of Education, Northwest A&F University, Yangling 712100, China; College of Environment and Plant Protection, Hainan University, Haikou, Hainan, 570228, China
| | - Wu Yongling
- Research & Development Center of Biorational Pesticide, Key Laboratory of Plant Protection Resources and Pest Management of Ministry of Education, Northwest A&F University, Yangling 712100, China
| | - Song Shuang
- Research & Development Center of Biorational Pesticide, Key Laboratory of Plant Protection Resources and Pest Management of Ministry of Education, Northwest A&F University, Yangling 712100, China
| | - Feng Juntao
- Research & Development Center of Biorational Pesticide, Key Laboratory of Plant Protection Resources and Pest Management of Ministry of Education, Northwest A&F University, Yangling 712100, China.
| | - Zhang Xing
- Research & Development Center of Biorational Pesticide, Key Laboratory of Plant Protection Resources and Pest Management of Ministry of Education, Northwest A&F University, Yangling 712100, China
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34
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Gonda Z, Béke F, Tischler O, Petró M, Novák Z, Tóth BL. Erythrosine B Catalyzed Visible-Light Photoredox Arylation-Cyclization of N
-Alkyl-N
-aryl-2-(trifluoromethyl)acrylamides to 3-(Trifluoromethyl)indolin-2-one Derivatives. European J Org Chem 2017. [DOI: 10.1002/ejoc.201601493] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Zsombor Gonda
- MTA-ELTE “Lendület” Catalysis and Organic Synthesis Research Group; Eötvös University; Department of Organic Chemistry; Pázmány Péter stny. 1/A 1117 Budapest Hungary
| | - Ferenc Béke
- MTA-ELTE “Lendület” Catalysis and Organic Synthesis Research Group; Eötvös University; Department of Organic Chemistry; Pázmány Péter stny. 1/A 1117 Budapest Hungary
| | - Orsolya Tischler
- MTA-ELTE “Lendület” Catalysis and Organic Synthesis Research Group; Eötvös University; Department of Organic Chemistry; Pázmány Péter stny. 1/A 1117 Budapest Hungary
| | - Milán Petró
- MTA-ELTE “Lendület” Catalysis and Organic Synthesis Research Group; Eötvös University; Department of Organic Chemistry; Pázmány Péter stny. 1/A 1117 Budapest Hungary
| | - Zoltán Novák
- MTA-ELTE “Lendület” Catalysis and Organic Synthesis Research Group; Eötvös University; Department of Organic Chemistry; Pázmány Péter stny. 1/A 1117 Budapest Hungary
| | - Balázs L. Tóth
- MTA-ELTE “Lendület” Catalysis and Organic Synthesis Research Group; Eötvös University; Department of Organic Chemistry; Pázmány Péter stny. 1/A 1117 Budapest Hungary
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35
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Kumar MSL, Manna SK, Maji S, Panda G. Indium triflate catalysed 3-aza-Cope rearrangement of amino acid derived α,β-unsaturated esters to alkylidene oxindoles. Org Biomol Chem 2017; 15:1762-1766. [DOI: 10.1039/c6ob02419j] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The first examples of amino acid derived α,β-unsaturated esters to Z-alkylidene oxindoles via 3-aza-Cope rearrangement using In(OTf)3 are reported.
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Affiliation(s)
| | - Sudipta Kumar Manna
- Medicinal and Process Chemistry Division
- CSIR-Central Drug Research Institute
- Lucknow 226031
- India
| | - Saroj Maji
- Medicinal and Process Chemistry Division
- CSIR-Central Drug Research Institute
- Lucknow 226031
- India
| | - Gautam Panda
- Medicinal and Process Chemistry Division
- CSIR-Central Drug Research Institute
- Lucknow 226031
- India
- Academy of Scientific and Innovative Research
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36
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Karnakanti S, Zang ZL, Zhao S, Shao PL, Hu P, He Y. Palladium-catalyzed oxidative arylacetoxylation of alkenes: synthesis of indole and indoline derivatives. Chem Commun (Camb) 2017; 53:11205-11208. [DOI: 10.1039/c7cc06448a] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
A method for the oxidative arylacetoxylation of alkenes has been developed to synthesize indole and indoline derivatives from readily accessible substrates.
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Affiliation(s)
- Shuklachary Karnakanti
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University
- Chongqing
- P. R. China
| | - Zhong-Lin Zang
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University
- Chongqing
- P. R. China
| | - Sheng Zhao
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University
- Chongqing
- P. R. China
| | - Pan-Lin Shao
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University
- Chongqing
- P. R. China
| | - Ping Hu
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University
- Chongqing
- P. R. China
| | - Yun He
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University
- Chongqing
- P. R. China
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37
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Reddy BN, Ramana CV. Synthesis of Functionalized 6-Hydroxy-2-oxindole Derivatives by Phenoxide Cyclization. Org Lett 2016; 18:6264-6267. [PMID: 27978630 DOI: 10.1021/acs.orglett.6b03048] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An apparent intramolecular cross-dehydrogenative coupling of N-(3-hydroxy)monoanilide of maleic esters comprising base promoted phenoxide cyclization and subsequent base-mediated aerobic oxidation was developed to synthesize a variety of 2-(6-hydroxy-2-oxoindolin-3-ylidene)acetate derivatives. The isolation of intermediate cyclized products during the large scale reactions and their ready dehydrogenation with 1 equiv of base support this proposed two-step path.
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Affiliation(s)
- B Narendraprasad Reddy
- Division of Organic Chemistry, CSIR-National Chemical Laboratory , Dr. Homi Bhabha Road, Pune-411008, India
| | - Chepuri V Ramana
- Division of Organic Chemistry, CSIR-National Chemical Laboratory , Dr. Homi Bhabha Road, Pune-411008, India
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38
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Gao Y, Gao Y, Wu W, Jiang H, Yang X, Liu W, Li CJ. Palladium-Catalyzed Tandem Oxidative Arylation/Olefination of Aromatic Tethered Alkenes/Alkynes. Chemistry 2016; 23:793-797. [DOI: 10.1002/chem.201605351] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2016] [Indexed: 11/06/2022]
Affiliation(s)
- Yang Gao
- Department of Chemistry and FQRNT Centre for Green Chemistry and Catalysis; McGill University; 801 Sherbrooke St. W. Montreal Quebec H3A 0B8 Canada
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering; South China University of Technology; Guangzhou 510640 PR China
| | - Yinglan Gao
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering; South China University of Technology; Guangzhou 510640 PR China
| | - Wanqing Wu
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering; South China University of Technology; Guangzhou 510640 PR China
| | - Huanfeng Jiang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering; South China University of Technology; Guangzhou 510640 PR China
| | - Xiaobo Yang
- Department of Chemistry and FQRNT Centre for Green Chemistry and Catalysis; McGill University; 801 Sherbrooke St. W. Montreal Quebec H3A 0B8 Canada
| | - Wenbo Liu
- Department of Chemistry and FQRNT Centre for Green Chemistry and Catalysis; McGill University; 801 Sherbrooke St. W. Montreal Quebec H3A 0B8 Canada
| | - Chao-Jun Li
- Department of Chemistry and FQRNT Centre for Green Chemistry and Catalysis; McGill University; 801 Sherbrooke St. W. Montreal Quebec H3A 0B8 Canada
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39
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Ji W, Liu YA, Liao X. Transition-Metal-Free Synthesis of N
-Hydroxy Oxindoles by an Aza-Nazarov-Type Reaction Involving Azaoxyallyl Cations. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201607177] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Wenzhi Ji
- School of Pharmaceutical Sciences; Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases; Tsinghua University; China
| | - Yahu A. Liu
- Medicinal Chemistry; Genomics Institute of the Novartis Research Foundation; San Diego CA 92121 USA
| | - Xuebin Liao
- School of Pharmaceutical Sciences; Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases; Tsinghua University; China
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40
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Liu L, Zhang T, Yang YF, Zhang-Negrerie D, Zhang X, Du Y, Wu YD, Zhao K. Metal-Free Synthesis of 3-Arylquinolin-2-ones from Acrylic Amides via a Highly Regioselective 1,2-Aryl Migration: An Experimental and Computational Study. J Org Chem 2016; 81:4058-65. [DOI: 10.1021/acs.joc.6b00345] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Le Liu
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China
| | - Tonghuan Zhang
- Lab
of Computational Chemistry and Drug Design, Key Laboratory of Chemical
Genomics, Peking University Shenzhen Graduate School, Shenzhen 518055, China
| | - Yun-Fang Yang
- Lab
of Computational Chemistry and Drug Design, Key Laboratory of Chemical
Genomics, Peking University Shenzhen Graduate School, Shenzhen 518055, China
| | - Daisy Zhang-Negrerie
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China
| | - Xinhao Zhang
- Lab
of Computational Chemistry and Drug Design, Key Laboratory of Chemical
Genomics, Peking University Shenzhen Graduate School, Shenzhen 518055, China
| | - Yunfei Du
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China
| | - Yun-Dong Wu
- Lab
of Computational Chemistry and Drug Design, Key Laboratory of Chemical
Genomics, Peking University Shenzhen Graduate School, Shenzhen 518055, China
| | - Kang Zhao
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China
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41
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Yu B, Xie JN, Zhong CL, Li W, He LN. Copper(I)@Carbon-Catalyzed Carboxylation of Terminal Alkynes with CO2 at Atmospheric Pressure. ACS Catal 2015. [DOI: 10.1021/acscatal.5b00764] [Citation(s) in RCA: 90] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Bing Yu
- State Key Laboratory and Institute of Elemento-Organic
Chemistry, Collaborative Innovation Center of Chemical Science and
Engineering, and ‡Key Laboratory of Advanced Energy Materials Chemistry
(Ministry of Education), College of Chemistry, Collaborative Innovation
Center of Chemical Science and Engineering, Nankai University, Tianjin 300071, People’s Republic of China
| | - Jia-Ning Xie
- State Key Laboratory and Institute of Elemento-Organic
Chemistry, Collaborative Innovation Center of Chemical Science and
Engineering, and ‡Key Laboratory of Advanced Energy Materials Chemistry
(Ministry of Education), College of Chemistry, Collaborative Innovation
Center of Chemical Science and Engineering, Nankai University, Tianjin 300071, People’s Republic of China
| | - Chun-Lai Zhong
- State Key Laboratory and Institute of Elemento-Organic
Chemistry, Collaborative Innovation Center of Chemical Science and
Engineering, and ‡Key Laboratory of Advanced Energy Materials Chemistry
(Ministry of Education), College of Chemistry, Collaborative Innovation
Center of Chemical Science and Engineering, Nankai University, Tianjin 300071, People’s Republic of China
| | - Wei Li
- State Key Laboratory and Institute of Elemento-Organic
Chemistry, Collaborative Innovation Center of Chemical Science and
Engineering, and ‡Key Laboratory of Advanced Energy Materials Chemistry
(Ministry of Education), College of Chemistry, Collaborative Innovation
Center of Chemical Science and Engineering, Nankai University, Tianjin 300071, People’s Republic of China
| | - Liang-Nian He
- State Key Laboratory and Institute of Elemento-Organic
Chemistry, Collaborative Innovation Center of Chemical Science and
Engineering, and ‡Key Laboratory of Advanced Energy Materials Chemistry
(Ministry of Education), College of Chemistry, Collaborative Innovation
Center of Chemical Science and Engineering, Nankai University, Tianjin 300071, People’s Republic of China
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42
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Jiang Q, Jia J, Xu B, Zhao A, Guo CC. Iron-Facilitated Oxidative Radical Decarboxylative Cross-Coupling between α-Oxocarboxylic Acids and Acrylic Acids: An Approach to α,β-Unsaturated Carbonyls. J Org Chem 2015; 80:3586-96. [DOI: 10.1021/acs.joc.5b00267] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Qing Jiang
- College
of Chemistry and
Chemical Engineering, Hunan University, Changsha 410082, P. R. China
| | - Jing Jia
- College
of Chemistry and
Chemical Engineering, Hunan University, Changsha 410082, P. R. China
| | - Bin Xu
- College
of Chemistry and
Chemical Engineering, Hunan University, Changsha 410082, P. R. China
| | - An Zhao
- College
of Chemistry and
Chemical Engineering, Hunan University, Changsha 410082, P. R. China
| | - Can-Cheng Guo
- College
of Chemistry and
Chemical Engineering, Hunan University, Changsha 410082, P. R. China
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43
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Mondal B, Roy B. Di-tert-butyl peroxide (DTBP) promoted dehydrogenative coupling: an expedient and metal-free synthesis of oxindoles via intramolecular C(sp2)–H and C(sp3)–H bond activation. RSC Adv 2015. [DOI: 10.1039/c5ra09055e] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
An efficient di-tert-butyl peroxide (DTBP) promoted synthesis of oxindole has been developed. This methodology involves C(sp3)–H and C(sp2)–H bond activation under metal-free conditions.
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Affiliation(s)
- Biplab Mondal
- Department of Chemistry
- University of Kalyani
- Kalyani
- India
| | - Brindaban Roy
- Department of Chemistry
- University of Kalyani
- Kalyani
- India
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44
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Rentería-Gómez A, Islas-Jácome A, Jiménez-Halla JOC, Gámez-Montaño R. Regiospecific synthesis of 1-acetamide-5-methoxy-2-oxindoles in two steps: (Ugi-SN2)/xanthate mediated free radical cyclization. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.10.026] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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45
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Wang NJ, Mei ST, Shuai L, Yuan Y, Wei Y. Aerobic Oxidative C–H Olefination of Cyclic N-Sulfonyl Ketimines Catalyzed by a Rhodium Catalyst. Org Lett 2014; 16:3040-3. [DOI: 10.1021/ol501152a] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Nan-Jin Wang
- College of Pharmacy, Third Military Medical University, Chongqing 400038, China
| | - Shu-Tao Mei
- College of Pharmacy, Third Military Medical University, Chongqing 400038, China
| | - Li Shuai
- College of Pharmacy, Third Military Medical University, Chongqing 400038, China
| | - Yi Yuan
- College of Pharmacy, Third Military Medical University, Chongqing 400038, China
| | - Ye Wei
- College of Pharmacy, Third Military Medical University, Chongqing 400038, China
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46
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47
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Li YM, Shen Y, Chang KJ, Yang SD. Arylnitration of alkenes by nitration/C–H functionalization cascade using AgNO3 and HOAc. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.02.043] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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48
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Shirai T, Ito H, Yamamoto Y. Cationic Ir/Me-BIPAM-Catalyzed Asymmetric Intramolecular Direct Hydroarylation of α-Ketoamides. Angew Chem Int Ed Engl 2014; 53:2658-61. [DOI: 10.1002/anie.201400147] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2014] [Indexed: 11/06/2022]
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49
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Shirai T, Ito H, Yamamoto Y. Cationic Ir/Me-BIPAM-Catalyzed Asymmetric Intramolecular Direct Hydroarylation of α-Ketoamides. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201400147] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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50
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Sar D, Paul R, Sengoden M, Punniyamurthy T. Synthesis of Substituted Pyrazoles from Vinylhydrozones via Bromoamination and Hydroamination with 2,2,6,6-Tetramethylpiperidine-1-oxyl andN-Bromosuccinimide. ASIAN J ORG CHEM 2014. [DOI: 10.1002/ajoc.201300294] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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