1
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Kamboj P, Mohapatra A, Mandal D, Tyagi V. Experimental and computational investigation of the α-amylase catalyzed Friedel-Crafts reaction of isatin to access symmetrical and unsymmetrical 3,3',3''-trisindoles. Org Biomol Chem 2024; 22:1839-1849. [PMID: 38345333 DOI: 10.1039/d3ob01928d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/29/2024]
Abstract
Trisindoles are of tremendous interest due to their wide range of biological activities. In this context, a number of methods have been reported in the past to synthesize 3,3',3''-trisindoles. However, most of the methods are only able to produce symmetrical 3,3',3''-trisindoles. Herein, we develop a sustainable and efficient approach to synthesize symmetrical as well as unsymmetrical 3,3',3''-trisindoles in a very selective manner using the α-amylase enzyme as a catalyst. Furthermore, various differently substituted isatin and indoles were used to prove the generality of the protocol and symmetrical or unsymmetrical 3,3',3''-trisindoles were obtained in 43-97% isolated yields. Next, a probable mechanism is proposed and investigated using molecular dynamics (MD) investigation to gain more insight into the role of residues available in the active site of the α-amylase enzyme. These studies revealed that Glu230, Lys209, and Asp206 in the active site of α-amylase play an important role in this catalysis. Moreover, the DFT studies suggested the formation of bisindole and alkylideneindolenine intermediates during the transformation. We synthesized four different biologically important 3,3',3''-trisindoles on a gram scale, which proved the robustness and scalability of this protocol.
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Affiliation(s)
- Priya Kamboj
- School of Chemistry and Biochemistry, Thapar Institute of Engineering and Technology (TIET), Patiala-147004, Punjab, India.
| | - Abinash Mohapatra
- School of Chemistry and Biochemistry, Thapar Institute of Engineering and Technology (TIET), Patiala-147004, Punjab, India.
| | - Debasish Mandal
- School of Chemistry and Biochemistry, Thapar Institute of Engineering and Technology (TIET), Patiala-147004, Punjab, India.
| | - Vikas Tyagi
- School of Chemistry and Biochemistry, Thapar Institute of Engineering and Technology (TIET), Patiala-147004, Punjab, India.
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2
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Ahmer MF, Ullah Q. Development and applications of deep eutectic solvents in different chromatographic techniques. JPC-J PLANAR CHROMAT 2023. [DOI: 10.1007/s00764-022-00216-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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3
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Ratnani S, Mahilkar Sonkar S, Kumari R. Strategies for sustainable organic synthesis. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2022. [DOI: 10.1007/s13738-022-02687-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
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4
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Hammond OS, Atri R, Bowron DT, Edler KJ. Neutron Diffraction Study of Indole Solvation in Deep Eutectic Systems of Choline Chloride, Malic Acid, and Water. Chemistry 2022; 28:e202200566. [PMID: 35510678 PMCID: PMC9400976 DOI: 10.1002/chem.202200566] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Indexed: 11/09/2022]
Abstract
Deep eutectic systems are currently under intense investigation to replace traditional organic solvents in a range of syntheses. Here, indole in choline chloride‐malic acid deep eutectic solvent (DES) was studied as a function of water content, to identify solute interactions with the DES which affect heterocycle reactivity and selectivity, and as a proxy for biomolecule solvation. Empirical Potential Structure Refinement models of neutron diffraction data showed [Cholinium]+ cations associate strongly with the indole π‐system due to electrostatics, whereas malic acid is only weakly associated. Trace water is sequestered into the DES and does not interact strongly with indole. When water is added to the DES, it does not interact with the indole π‐system but is exclusively in‐plane with the heterocyclic rings, forming strong H‐bonds with the ‐NH group, and also weak H‐bonds and thus prominent hydrophobic hydration of the indole aromatic region, which could direct selectivity in reactions.
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Affiliation(s)
- Oliver S. Hammond
- Centre for Sustainable Chemical Technologies and Department of Chemistry University of Bath Claverton Down Bath BA2 7AY U.K
- Current address: Department of Materials and Environmental Chemistry Stockholm University Stockholm Sweden
| | - Ria Atri
- Centre for Sustainable Chemical Technologies and Department of Chemical Engineering University of Bath Claverton Down Bath BA2 7AY U.K
| | - Daniel T. Bowron
- ISIS Neutron and Muon Source Science and Technology Facilities Council Rutherford Appleton Laboratory Didcot OX11 0QX U.K
| | - Karen J. Edler
- Centre for Sustainable Chemical Technologies and Department of Chemistry University of Bath Claverton Down Bath BA2 7AY U.K
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Molnar M, Lončarić M, Jakovljević M, Komar M, Lončar M. Some applications of deep eutectic solvents in alkylation of heterocyclic compounds: A review of the past 10 years. HETEROCYCL COMMUN 2021. [DOI: 10.1515/hc-2020-0122] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Abstract
This mini-review encapsulates the latest findings (past 10 years) in the field of the deep eutectic solvents (DESs) application in the alkylation/arylation of different heterocyclic compounds. These solvents have been developed to fulfill the green chemistry concept demands and have been proven excellent for the application in various fields. This review describes their application in different types of alkylation, C-, N-, O- and S-alkylation. P-alkylation has not yet been published within this scope. Not only have the authors in this study proven that DESs could be successfully applied for this specific type of reaction, but they have also offered an excellent insight into the mechanisms of their action.
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Affiliation(s)
- Maja Molnar
- Department of Applied Chemistry and Ecology, Faculty of Food Technology Osijek , F. Kuhača 18 , 31000 Osijek , Croatia
| | - Melita Lončarić
- Department of Applied Chemistry and Ecology, Faculty of Food Technology Osijek , F. Kuhača 18 , 31000 Osijek , Croatia
| | - Martina Jakovljević
- Department of Applied Chemistry and Ecology, Faculty of Food Technology Osijek , F. Kuhača 18 , 31000 Osijek , Croatia
| | - Mario Komar
- Department of Applied Chemistry and Ecology, Faculty of Food Technology Osijek , F. Kuhača 18 , 31000 Osijek , Croatia
| | - Mirjana Lončar
- Department of Applied Chemistry and Ecology, Faculty of Food Technology Osijek , F. Kuhača 18 , 31000 Osijek , Croatia
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Kaur G, Kumar R, Saroch S, Gupta VK, Banerjee B. Mandelic Acid: An Efficient Organo-catalyst for the Synthesis of 3-substituted-3- Hydroxy-indolin-2-ones and Related Derivatives in Aqueous Ethanol at Room Temperature. CURRENT ORGANOCATALYSIS 2021. [DOI: 10.2174/2213337207999200713145440] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Background:
Indoles and various indolyl derivatives are very common in naturally occurring
biologically active compounds. Many methods are being developed for the synthesis of various
bioactive indole derivatives.
Objective:
Synthesis of biologically promising structurally diverse indole derivatives under mild and
environmentally benign conditions.
Methods:
Synthesis of 3-hydroxy-3-(5-(trifluoromethoxy)-1H-indol-3-yl)indolin-2-one was achieved
by the reaction of an equimolar mixture of isatin and 3-(trifluoromethoxy)-1H-indol using 20 mol% of
mandelic acid as catalyst in aqueous ethanol at room temperature. Under the same optimized reaction
conditions, synthesis of 3-(3-hydroxy-2-oxoindolin-3-yl)chroman-2,4-diones was accomplished via the
reactions of substituted isatins and 4-hydroxycoumarin. On the other hand, 2-hydroxy-2-(indol-3-yl)-
indene-1,3-diones and 10-hydroxy-10-(5-methoxy-1H-indol-3- yl)phenanthren-9(10H)-one were synthesized
from the reactions of indoles and ninhydrin or 9,10-phenanthrenequinone respectively using
the same 20 mol% of mandelic acid as an efficient organo-catalyst in aqueous ethanol at room temperature.
Results:
Mild, safe and clean reaction profiles, energy efficiency, high atom-economy, use of naturally
occurring non-toxic organo-catalyst, easy isolation procedure by avoiding column chromatographic
purification and gram scale production are some the major advantages of this developed protocol.
Conclusion:
A simple, straightforward and eco-friendly protocol has been developed for the efficient
synthesis of biologically promising novel 3-hydroxy-3-(5-(trifluoromethoxy)-1H-indol- 3-yl)indolin-2-
one, 3-(3-hydroxy-2-oxoindolin-3-yl)chroman-2,4-diones, 2-hydroxy-2-(indol-3- yl)-indene-1,3-diones
and 10-hydroxy-10-(5-methoxy-1H-indol-3-yl)phenanthren-9(10H)-one using a catalytic amount of
mandelic acid in aqueous ethanol at room temperature.
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Affiliation(s)
- Gurpreet Kaur
- Department of Chemistry, Indus International University, V.P.O. Bathu, Distt. Una, Himachal Pradesh-174507, India
| | - Rajat Kumar
- Department of Chemistry, Indus International University, V.P.O. Bathu, Distt. Una, Himachal Pradesh-174507, India
| | - Shivam Saroch
- Department of Chemistry, Indus International University, V.P.O. Bathu, Distt. Una, Himachal Pradesh-174507, India
| | - Vivek Kumar Gupta
- Post-Graduate Department of Physics, University of Jammu, Jammu Tawi-180006, India
| | - Bubun Banerjee
- Department of Chemistry, Indus International University, V.P.O. Bathu, Distt. Una, Himachal Pradesh-174507, India
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7
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Płotka-Wasylka J, Rutkowska M, de la Guardia M. Are deep eutectic solvents useful in chromatography? A short review. J Chromatogr A 2021; 1639:461918. [PMID: 33540182 DOI: 10.1016/j.chroma.2021.461918] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Revised: 01/09/2021] [Accepted: 01/15/2021] [Indexed: 12/18/2022]
Abstract
A literature update has been done concerning Deep Eutectic Solvents (DES) use in chromatography applications. The literature survey was based on the period from 2010 till 2020 and manuscripts reported in the data bases Web of Science and Scopus. The use of DES as mobile phase and mobile phase additives, stationary phases and solid phase modifiers and the use of DES as reaction solvents for chromatography use, were evaluated. Emphasis was placed on the differentiation of DES and Ionic Liquids (ILs) and the advanced green characteristics of the new solvents as compared with traditional organic solvents and ILs with a look into the drawbacks and future perspectives in the field of separation methods.
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Affiliation(s)
- Justyna Płotka-Wasylka
- Department of Analytical Chemistry, Faculty of Chemistry, Gdańsk University of Technology, PL-80-233 Gdańsk, Poland.
| | - Małgorzata Rutkowska
- Department of Analytical Chemistry, Faculty of Chemistry, Gdańsk University of Technology, PL-80-233 Gdańsk, Poland
| | - Miguel de la Guardia
- Department of Analytical Chemistry, University of Valencia, Valencia 46100, Spain
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8
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Ranjbari MA, Tavakol H, Manoukian M. Regioselective and solvent-free arylation of β-nitrostyrenes with mono- and dialkyl anilines. RESEARCH ON CHEMICAL INTERMEDIATES 2020. [DOI: 10.1007/s11164-020-04294-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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9
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Roy A, Maity A, Giri R, Bisai A. Efficient Alkynylation of 2‐Oxindoles with Alkynyl Dibenzothiophenium Triflates: Total Synthesis of (±)‐Deoxyeseroline. ASIAN J ORG CHEM 2020. [DOI: 10.1002/ajoc.202000027] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Avishek Roy
- Department of ChemistryIndian Institute of Science Education and Research Bhopal Bhopal Bypass Road, Bhauri Bhopal 462 066 Madhya Pradesh India
| | - Arindam Maity
- Department of ChemistryIndian Institute of Science Education and Research Bhopal Bhopal Bypass Road, Bhauri Bhopal 462 066 Madhya Pradesh India
| | - Rahul Giri
- Department of ChemistryIndian Institute of Science Education and Research Bhopal Bhopal Bypass Road, Bhauri Bhopal 462 066 Madhya Pradesh India
| | - Alakesh Bisai
- Department of ChemistryIndian Institute of Science Education and Research Bhopal Bhopal Bypass Road, Bhauri Bhopal 462 066 Madhya Pradesh India
- Department of Chemical SciencesIndian Institute of Science Education and Research Kolkata Mohanpur, Haringhata Kalyani, Nadia 741 246 West Bengal India
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10
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Nikoofar K, Haghighi M, Khademi Z. Preparation, characterization, and catalytic application of metallic nanocrystalline MgAl2O4 in the synthesis of 3-hydroxy-3-indolyl-indolin-2-ones, symmetrical and unsymmetrical 3,3′-bis(indolyl)indolin-2-ones, and 3,3′-bis(indolyl)methanes. ARAB J CHEM 2019. [DOI: 10.1016/j.arabjc.2016.01.013] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
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11
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12
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Muthukumar A, Rao GN, Sekar G. Zn(OTf) 2-catalyzed access to symmetrical and unsymmetrical bisindoles from α-keto amides. Org Biomol Chem 2019; 17:3921-3933. [PMID: 30941387 DOI: 10.1039/c9ob00114j] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Zn(OTf)2-catalyzed synthesis of 3,3'-bisindolyl acetamides from α-keto amides is developed. Both aromatic α-keto amides substituted with electron-donating as well as -withdrawing groups and aliphatic α-keto amides are well tolerated to provide symmetrical bisindoles in moderate to excellent yields. The chemoselective bisindolylation of the keto group of α-keto amides in the presence of a simple keto functionality is successfully achieved in good yields. The transformation is further extended to the synthesis of challenging unsymmetrical bisindoles by treating indolyl α-hydroxy amides with substituted indoles. The unsymmetrical bisindoles are isolated in good to excellent yields.
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Affiliation(s)
- Alagesan Muthukumar
- Department of Chemistry, Indian Institute of Technology Madras, Chennai, 600 036, India.
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13
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Nagaraju S, Sathish K, Paplal B, Satyanarayana N, Kashinath D. 3-Hydroxy-3-((3-methyl-4-nitroisoxazol-5-yl)methyl)indolin-2-one as a versatile intermediate for retro-Henry and Friedel–Crafts alkylation reactions in aqueous medium. NEW J CHEM 2019. [DOI: 10.1039/c9nj03209f] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The first example of a retro-Henry type reaction is reported using 3-hydroxy-3-((3-methyl-4-nitroisoxazol-5-yl)methyl)indolin-2-ones which are prepared via catalyst-free Henry reaction of 3,5-dimethyl-4-nitroisoxazole and isatin.
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Affiliation(s)
- Sakkani Nagaraju
- Department of Chemistry
- National Institute of Technology
- Warangal-506 004
- India
| | - Kota Sathish
- Department of Chemistry
- National Institute of Technology
- Warangal-506 004
- India
| | - Banoth Paplal
- Department of Chemistry
- National Institute of Technology
- Warangal-506 004
- India
| | - Neeli Satyanarayana
- Department of Chemistry
- National Institute of Technology
- Warangal-506 004
- India
| | - Dhurke Kashinath
- Department of Chemistry
- National Institute of Technology
- Warangal-506 004
- India
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14
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Hen Egg White Lysozyme Catalyzed Efficient Synthesis of 3-Indolyl-3-hydroxy Oxindole in Aqueous Ethanol. Catal Letters 2018. [DOI: 10.1007/s10562-018-2551-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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15
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HNO3@nano SiO2 Catalyzed Green and Efficient Synthesis of Symmetrical and Unsymmetrical Di(indolyl)indoline-2-ones by Stirring and Grindstone Methods. NATIONAL ACADEMY SCIENCE LETTERS 2018. [DOI: 10.1007/s40009-018-0710-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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16
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Muthukumar A, Sekar G. Friedel–Crafts Hydroxyalkylation of Indoles with α-Keto Amides using Reusable K3PO4/nBu4NBr Catalytic System in Water. J Org Chem 2018; 83:8827-8839. [DOI: 10.1021/acs.joc.8b00844] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Alagesan Muthukumar
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, Tamilnadu, India
| | - Govindasamy Sekar
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, Tamilnadu, India
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17
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18
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Seo DY, Roh HJ, Min BK, Kim JN. Facile Synthesis of Isoindigo Derivatives from 3-Indolyl-2-Oxindoles with DDQ. B KOREAN CHEM SOC 2017. [DOI: 10.1002/bkcs.11317] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Da Young Seo
- Department of Chemistry and Institute of Basic Science; Chonnam National University; Gwangju 500-757 Korea
| | - Hwa Jung Roh
- Department of Chemistry and Institute of Basic Science; Chonnam National University; Gwangju 500-757 Korea
| | - Beom Kyu Min
- Department of Chemistry and Institute of Basic Science; Chonnam National University; Gwangju 500-757 Korea
| | - Jae Nyoung Kim
- Department of Chemistry and Institute of Basic Science; Chonnam National University; Gwangju 500-757 Korea
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19
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Kinthada LK, Medisetty SR, Parida A, Babu KN, Bisai A. FeCl3-Catalyzed Allylation Reactions onto 3-Hydroxy-2-oxindoles: Formal Total Syntheses of Bis-cyclotryptamine Alkaloids, (±)-Chimonanthine, and (±)-Folicanthine. J Org Chem 2017; 82:8548-8567. [DOI: 10.1021/acs.joc.7b01232] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Lakshmana K. Kinthada
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhopal, Madhya Pradesh 462 066, India
| | - Sai Raghavendra Medisetty
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhopal, Madhya Pradesh 462 066, India
| | - Amarchand Parida
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhopal, Madhya Pradesh 462 066, India
| | - K. Naresh Babu
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhopal, Madhya Pradesh 462 066, India
| | - Alakesh Bisai
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhopal, Madhya Pradesh 462 066, India
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20
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Tong J, Li YW, Xu DZ. Solvent-Controlled Friedel-Crafts Reaction for the Synthesis of 3-Indolyl-3-hydroxy Oxindoles and 3, 3-Diindolyl Oxindoles Catalyzed by Dabco-Base Ionic Liquids. ChemistrySelect 2017. [DOI: 10.1002/slct.201700603] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Jun Tong
- National Engineering Research Center of Pesticide (Tianjin); State Key Laboratory and Institute of Elemento-Organic Chemistry; Nankai University; Tianjin 300071 China
| | - Yu-Wei Li
- National Engineering Research Center of Pesticide (Tianjin); State Key Laboratory and Institute of Elemento-Organic Chemistry; Nankai University; Tianjin 300071 China
| | - Da-Zhen Xu
- National Engineering Research Center of Pesticide (Tianjin); State Key Laboratory and Institute of Elemento-Organic Chemistry; Nankai University; Tianjin 300071 China
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21
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Singh K, Kaur A, Mithu VS, Sharma S. Metal-Free Organocatalytic Oxidative Ugi Reaction Promoted by Hypervalent Iodine. J Org Chem 2017; 82:5285-5293. [DOI: 10.1021/acs.joc.7b00594] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Karandeep Singh
- Department of Chemistry, Mohanlal Sukhadia University, Udaipur, India 313001
- Department of Chemistry, U.G.C. Centre of Advance Studies
in Chemistry, Guru Nanak Dev University, Amritsar, India 143005
| | - Amanpreet Kaur
- Department of Chemistry, Indian Institute of Technology Delhi, New Delhi, India 110016
| | - Venus Singh Mithu
- Department of Chemistry, U.G.C. Centre of Advance Studies
in Chemistry, Guru Nanak Dev University, Amritsar, India 143005
| | - Siddharth Sharma
- Department of Chemistry, Mohanlal Sukhadia University, Udaipur, India 313001
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22
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Xue JW, Guo JT, He YH, Guan Z. Solvent-Controlled Enzyme-Catalyzed Friedel-Crafts Reactions of Indoles and Isatins by Using α-Chymotrypsin. ASIAN J ORG CHEM 2017. [DOI: 10.1002/ajoc.201600526] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Jing-Wen Xue
- Key Laboratory of Applied Chemistry of Chongqing Municipality; School of Chemistry and Chemical Engineering; Southwest University; Chongqing 400715 P. R. China
| | - Jun-Tao Guo
- Key Laboratory of Applied Chemistry of Chongqing Municipality; School of Chemistry and Chemical Engineering; Southwest University; Chongqing 400715 P. R. China
| | - Yan-Hong He
- Key Laboratory of Applied Chemistry of Chongqing Municipality; School of Chemistry and Chemical Engineering; Southwest University; Chongqing 400715 P. R. China
| | - Zhi Guan
- Key Laboratory of Applied Chemistry of Chongqing Municipality; School of Chemistry and Chemical Engineering; Southwest University; Chongqing 400715 P. R. China
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23
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Tong J, Huang LS, Xu DZ. An efficient Friedel–Crafts alkylation for the synthesis of 3-indolyl-3-hydroxy oxindoles and unsymmetrical 3,3-diaryl oxindoles catalyzed by Dabco-based ionic liquids in water. NEW J CHEM 2017. [DOI: 10.1039/c7nj00174f] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient, green and reusable catalytic system for controlled 3-indolylation of isatins.
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Affiliation(s)
- Jun Tong
- National Engineering Research Center of Pesticide (Tianjin)
- State Key Laboratory and Institute of Elemento-Organic Chemistry
- College of Chemistry
- Nankai University
- Tianjin 300071
| | - Lu-Shan Huang
- National Engineering Research Center of Pesticide (Tianjin)
- State Key Laboratory and Institute of Elemento-Organic Chemistry
- College of Chemistry
- Nankai University
- Tianjin 300071
| | - Da-Zhen Xu
- National Engineering Research Center of Pesticide (Tianjin)
- State Key Laboratory and Institute of Elemento-Organic Chemistry
- College of Chemistry
- Nankai University
- Tianjin 300071
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24
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Alonso DA, Baeza A, Chinchilla R, Guillena G, Pastor IM, Ramón DJ. Deep Eutectic Solvents: The Organic Reaction Medium of the Century. European J Org Chem 2016. [DOI: 10.1002/ejoc.201501197] [Citation(s) in RCA: 421] [Impact Index Per Article: 52.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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25
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Rad-Moghadam K, Mousazadeh Hassani SAR, Toorchi Roudsari S. The deep eutectic melt of sorbitol and metformin hydrochloride: synthesis of 3-substituted 2-aminonaphtho[2,3-b]furan-4,9-diones and their photophysical properties. RSC Adv 2016. [DOI: 10.1039/c5ra19619a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
The low-melting deep-eutectic mixture of sorbitol and metformin HCl was successfully employed as a recyclable solvent for promoting the synthesis of benzofuroquinone dyes.
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26
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Tran PH, Nguyen HT, Hansen PE, Le TN. An efficient and green method for regio- and chemo-selective Friedel–Crafts acylations using a deep eutectic solvent ([CholineCl][ZnCl2]3). RSC Adv 2016. [DOI: 10.1039/c6ra03551e] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
An efficient and environmentally benign method for regio- and chemo-selective Friedel–Crafts acylation using deep eutectic solvent ([CholineCl][ZnCl2]3) under solvent-free microwave irradiation.
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Affiliation(s)
- Phuong Hoang Tran
- Department of Organic Chemistry
- Faculty of Chemistry
- University of Sciences
- Vietnam National University
- Ho Chi Minh City 70000
| | - Hai Truong Nguyen
- Department of Organic Chemistry
- Faculty of Chemistry
- University of Sciences
- Vietnam National University
- Ho Chi Minh City 70000
| | - Poul Erik Hansen
- Department of Science
- Systems and Models
- Roskilde University
- DK-4000 Roskilde
- Denmark
| | - Thach Ngoc Le
- Department of Organic Chemistry
- Faculty of Chemistry
- University of Sciences
- Vietnam National University
- Ho Chi Minh City 70000
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Choline chloride and itaconic acid-based deep eutectic solvent as an efficient and reusable medium for the preparation of 13-aryl-5H-dibenzo[b,i]xanthene-5,7,12,14(13H)-tetraones. MONATSHEFTE FUR CHEMIE 2015. [DOI: 10.1007/s00706-015-1571-z] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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