1
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Malakooti R, Heravi MM, Amiri Z, Kafshdarzadeh K, Zadsirjan V, Parsaee Z. [Cu(bpdo)2·2H2O]2+/montmorillonite: a highly effective and recyclable catalyst for the synthesis of 2-amino-4H-chromenes, 2-amino-4H-benzopyrans and spiroacenaphthylene derivatives via MCR in aqueous media. RESEARCH ON CHEMICAL INTERMEDIATES 2022. [DOI: 10.1007/s11164-022-04745-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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2
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Azarnier SG, Esmkhani M, Dolatkhah Z, Javanshir S. Collagen-coated superparamagnetic iron oxide nanoparticles as a sustainable catalyst for spirooxindole synthesis. Sci Rep 2022; 12:6104. [PMID: 35414646 PMCID: PMC9005729 DOI: 10.1038/s41598-022-10102-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2021] [Accepted: 02/24/2022] [Indexed: 12/31/2022] Open
Abstract
In this work, a novel magnetic organic–inorganic hybrid catalyst was fabricated by encapsulating magnetite@silica (Fe3O4@SiO2) nanoparticles with Isinglass protein collagen (IGPC) using epichlorohydrin (ECH) as a crosslinking agent. Characterization studies of the prepared particles were accomplished by various analytical techniques specifically, Fourier transform infrared (FTIR) analysis, scanning electron microscopy (SEM), transmission electron microscopy (TEM), vibrating sample magnetometry (VSM), energy-dispersive X-ray spectroscopy (EDS), X-ray powder diffraction (XRD), thermogravimetric analysis (TGA), and Brunauer−Emmett−Teller (BET) analysis. The XRD results showed a crystalline and amorphous phase which contribute to magnetite and isinglass respectively. Moreover, the formation of the core/shell structure had been confirmed by TEM images. The synthesized Fe3O4@SiO2/ECH/IG was applied as a bifunctional heterogeneous catalyst in the synthesis of spirooxindole derivatives through the multicomponent reaction of isatin, malononitrile, and C-H acids which demonstrated its excellent catalytic properties. The advantages of this green approach were low catalyst loading, short reaction time, stability, and recyclability for at least four runs.
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Affiliation(s)
- Shima Ghanbari Azarnier
- Heterocyclic Chemistry Research Laboratory, Department of Chemistry, Iran University of Science and Technology, 16846-13114, Tehran, Iran
| | - Maryam Esmkhani
- Heterocyclic Chemistry Research Laboratory, Department of Chemistry, Iran University of Science and Technology, 16846-13114, Tehran, Iran
| | - Zahra Dolatkhah
- Heterocyclic Chemistry Research Laboratory, Department of Chemistry, Iran University of Science and Technology, 16846-13114, Tehran, Iran
| | - Shahrzad Javanshir
- Heterocyclic Chemistry Research Laboratory, Department of Chemistry, Iran University of Science and Technology, 16846-13114, Tehran, Iran.
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3
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Hartwig D, Soares LK, Dapper LH, Nascimento JER, Lenardão EJ. Dicarbonyl compounds in the synthesis of heterocycles under green conditions. PHYSICAL SCIENCES REVIEWS 2022. [DOI: 10.1515/psr-2021-0095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Carbon–carbon and carbon-heteroatom bond forming reactions are strategically employed for the generation of a variety of heterocyclic systems. This class of compounds represents the most general structural unit, present in many natural compounds. They are recognized for their valuable biologically properties and wide range of applications in medicinal, pharmaceutical, and other related fields of chemistry. This is an updated review on the use of dicarbonyl compounds under environmentally friendly conditions to access a series of heterocyclic structures, e.g., quinoxaline, quinazolinones, benzochalcogenazoles, indoles, among others. Synthetic protocols involving copper-catalyzed, multicomponent and cascade reactions, decarboxylative cyclization, recycling of CO2, and electrochemical approaches are presented and discussed.
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Affiliation(s)
- Daniela Hartwig
- Laboratório de Síntese Orgânica Limpa – LASOL, CCQFA, Universidade Federal de Pelotas - UFPel , P.O. Box 354, 96010-900 Pelotas , RS , Brazil
| | - Liane K. Soares
- Laboratório de Síntese Orgânica Limpa – LASOL, CCQFA, Universidade Federal de Pelotas - UFPel , P.O. Box 354, 96010-900 Pelotas , RS , Brazil
| | - Luiz H. Dapper
- Laboratório de Síntese Orgânica Limpa – LASOL, CCQFA, Universidade Federal de Pelotas - UFPel , P.O. Box 354, 96010-900 Pelotas , RS , Brazil
| | - José E. R. Nascimento
- Laboratório de Síntese Orgânica Limpa – LASOL, CCQFA, Universidade Federal de Pelotas - UFPel , P.O. Box 354, 96010-900 Pelotas , RS , Brazil
| | - Eder João Lenardão
- Laboratório de Síntese Orgânica Limpa – LASOL, CCQFA, Universidade Federal de Pelotas - UFPel , P.O. Box 354, 96010-900 Pelotas , RS , Brazil
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4
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Kheilkordi Z, Mohammadi Ziarani G, Mohajer F, Badiei A, Varma RS. Waste-to-wealth transition: application of natural waste materials as sustainable catalysts in multicomponent reactions. GREEN CHEMISTRY 2022; 24:4304-4327. [DOI: 10.1039/d2gc00704e] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Application of natural waste materials as sustainable catalysts in multicomponent reactions.
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Affiliation(s)
- Zohreh Kheilkordi
- Department of Chemistry, Faculty of Physics and Chemistry, Alzahra University, Tehran, 1993893979, Iran
| | - Ghodsi Mohammadi Ziarani
- Department of Chemistry, Faculty of Physics and Chemistry, Alzahra University, Tehran, 1993893979, Iran
| | - Fatemeh Mohajer
- Department of Chemistry, Faculty of Physics and Chemistry, Alzahra University, Tehran, 1993893979, Iran
| | - Alireza Badiei
- School of Chemistry, College of Science, University of Tehran, Tehran, Iran
| | - Rajender S. Varma
- Regional Centre of Advanced Technologies and Materials, Czech Advanced Technology and Research Institute, Palacky University, Šlechtitelů 27, 783 71 Olomouc, Czech Republic
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5
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Brandão P, Marques CS, Carreiro EP, Pineiro M, Burke AJ. Engaging Isatins in Multicomponent Reactions (MCRs) - Easy Access to Structural Diversity. CHEM REC 2021; 21:924-1037. [PMID: 33599390 DOI: 10.1002/tcr.202000167] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 01/25/2021] [Indexed: 12/15/2022]
Abstract
Multicomponent reactions (MCRs) are a valuable tool in diversity-oriented synthesis. Its application to privileged structures is gaining relevance in the fields of organic and medicinal chemistry. Isatin, due to its unique reactivity, can undergo different MCRs, affording multiple interesting scaffolds, namely oxindole-derivatives (including spirooxindoles, bis-oxindoles and 3,3-disubstituted oxindoles) and even, under certain conditions, ring-opening reactions occur that leads to other heterocyclic compounds. Over the past few years, new methodologies have been described for the application of this important and easily available starting material in MCRs. In this review, we explore these novelties, displaying them according to the structure of the final products obtained.
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Affiliation(s)
- Pedro Brandão
- University of Coimbra, CQC and Department of Chemistry, 3004-535, Coimbra, Portugal.,LAQV-REQUIMTE, University of Évora, Rua Romão Ramalho, 59, 7000, Évora, Portugal
| | - Carolina S Marques
- LAQV-REQUIMTE, University of Évora, Rua Romão Ramalho, 59, 7000, Évora, Portugal
| | - Elisabete P Carreiro
- LAQV-REQUIMTE, University of Évora, Rua Romão Ramalho, 59, 7000, Évora, Portugal
| | - M Pineiro
- University of Coimbra, CQC and Department of Chemistry, 3004-535, Coimbra, Portugal
| | - Anthony J Burke
- LAQV-REQUIMTE, University of Évora, Rua Romão Ramalho, 59, 7000, Évora, Portugal.,University of Evora, Department of Chemistry, Rua Romão Ramalho, 59, 7000, Évora, Portugal
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6
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Catalyst-free, visible light irradiation promoted synthesis of spiroacenaphthylenes and 1H-pyrazolo[1,2-b]phthalazine-5,10-diones in aqueous ethyl lactate. J Photochem Photobiol A Chem 2021. [DOI: 10.1016/j.jphotochem.2020.113041] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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7
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Jumbam ND, Masamba W. Bio-Catalysis in Multicomponent Reactions. Molecules 2020; 25:E5935. [PMID: 33333902 PMCID: PMC7765341 DOI: 10.3390/molecules25245935] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Revised: 12/04/2020] [Accepted: 12/11/2020] [Indexed: 01/16/2023] Open
Abstract
Enzyme catalysis is a very active research area in organic chemistry, because biocatalysts are compatible with and can be adjusted to many reaction conditions, as well as substrates. Their integration in multicomponent reactions (MCRs) allows for simple protocols to be implemented in the diversity-oriented synthesis of complex molecules in chemo-, regio-, stereoselective or even specific modes without the need for the protection/deprotection of functional groups. The application of bio-catalysis in MCRs is therefore a welcome and logical development and is emerging as a unique tool in drug development and discovery, as well as in combinatorial chemistry and related areas of research.
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Affiliation(s)
| | - Wayiza Masamba
- Department of Chemical and Physical Sciences, Faculty of Natural Sciences, Walter Sisulu University, Nelson Mandela Drive, Mthatha 5117, South Africa;
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8
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Youseftabar-Miri L, Hosseinjani-Pirdehi H, Akrami A, Hallajian S. Recent investigations in the synthesis of spirooxindole derivatives by Iranian researchers. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2020. [DOI: 10.1007/s13738-020-01921-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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9
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Wagh YB, Padvi SA, Mahulikar PP, Dalal DS. CsF promoted rapid synthesis of spirooxindole‐pyran annulated heterocycles at room temperature in ethanol. J Heterocycl Chem 2019. [DOI: 10.1002/jhet.3846] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Yogesh B. Wagh
- School of Chemical SciencesKavayitri Bahinabai Chaudhari North Maharashtra University Jalgaon India
| | | | - Pramod P. Mahulikar
- School of Chemical SciencesKavayitri Bahinabai Chaudhari North Maharashtra University Jalgaon India
| | - Dipak S. Dalal
- School of Chemical SciencesKavayitri Bahinabai Chaudhari North Maharashtra University Jalgaon India
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10
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Deepthi A, V. Thomas N, Sathi V. Green Protocols for the Synthesis of 3,3’-spirooxindoles – 2016- mid 2019. CURRENT GREEN CHEMISTRY 2019. [DOI: 10.2174/2213346106666191019144116] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Spirooxindoles, particularly 3,3’-spirooxindoles constitute a privileged structural scaffold owing to the intensive biological activities which they possess. Because of this over the last twenty years, a large number of methods were devised for their synthesis and some of these molecules have entered pre-clinical trials. Of late, methods for spirooxindole synthesis using green protocols have developed rapidly. Reactions based on multicomponent strategies using non-catalytic / biocatalytic pathways and those done in aqueous media have been largely employed for the synthesis of 3,3’- spirooxindoles. This review focusses on the synthesis of 3,3’-spirooxindoles via green protocols and covers the literature from 2016 onwards (2016 - mid 2019); a review on the same topic has appeared in 2016. The green methods discussed here include reactions done in aqueous media, multicomponent strategies, alternate solvents and photocatalysis.
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Affiliation(s)
- Ani Deepthi
- Department of Chemistry, University of Kerala, Thiruvananthapuram 695581, Kerala, India
| | - Noble V. Thomas
- Department of Chemistry, University of Kerala, Thiruvananthapuram 695581, Kerala, India
| | - Vidya Sathi
- Department of Chemistry, University of Kerala, Thiruvananthapuram 695581, Kerala, India
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11
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Dolatkhah Z, Mohammadkhani A, Javanshir S, Bazgir A. Peanut shell as a green biomolecule support for anchoring Cu 2O: a biocatalyst for green synthesis of 1,2,3-triazoles under ultrasonic irradiation. BMC Chem 2019; 13:97. [PMID: 31355370 PMCID: PMC6659571 DOI: 10.1186/s13065-019-0612-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2018] [Accepted: 07/15/2019] [Indexed: 12/15/2022] Open
Abstract
Cu2O supported on peanut shell (Cu2O@PS) was prepared by the reaction of copper acetate and peanut shell powder as a naturally available biopolymer support. The prepared catalyst was used as an efficient and reusable heterogeneous catalyst in the click reaction of benzyl halide or phenacyl bromides, acetylenes and sodium azide for the synthesis of potentially biologically active 1,2,3-triazoles under ultrasonic irradiation in EtOH-H2O as green solvent.
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Affiliation(s)
- Zahra Dolatkhah
- Heterocyclic Chemistry Research Laboratory, Department of Chemistry, Iran University of Science and Technology, Tehran, 16846-13114 Iran
| | | | - Shahrzad Javanshir
- Heterocyclic Chemistry Research Laboratory, Department of Chemistry, Iran University of Science and Technology, Tehran, 16846-13114 Iran
| | - Ayoob Bazgir
- Department of Chemistry, Shahid Beheshti University, G.C, Tehran, 1983963113 Iran
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12
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Dolatkhah Z, Javanshir S, Bazgir A, Hemmati B. Palladium on magnetic Irish moss: A new nano‐biocatalyst for suzuki type cross‐coupling reactions. Appl Organomet Chem 2019. [DOI: 10.1002/aoc.4859] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Zahra Dolatkhah
- Heterocyclic Chemistry Research Laboratory, Department of ChemistryIran University of Science and Technology Tehran 16846‐13114 Iran
| | - Shahrzad Javanshir
- Heterocyclic Chemistry Research Laboratory, Department of ChemistryIran University of Science and Technology Tehran 16846‐13114 Iran
| | - Ayoub Bazgir
- Department of ChemistryShahid Beheshti University G.C Tehran 1983963113 Iran
| | - Behnaz Hemmati
- Heterocyclic Chemistry Research Laboratory, Department of ChemistryIran University of Science and Technology Tehran 16846‐13114 Iran
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13
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Isinglass–palladium as collagen peptide–metal complex: a highly efficient heterogeneous biocatalyst for Suzuki cross-coupling reaction in water. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2019. [DOI: 10.1007/s13738-019-01625-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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14
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Convenient synthesis of spirooxindoles using SnO2 nanoparticles as effective reusable catalyst at room temperature and study of their in vitro antimicrobial activity. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2019. [DOI: 10.1007/s13738-019-01598-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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15
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Hussen AS, Pandey AP, Sharma A. Mechanochemical- (Hand-Grinding-) Assisted Domino Synthesis of Fused Pyran-Spirooxindoles under Solvent- and Catalyst-Free Condition. ChemistrySelect 2018. [DOI: 10.1002/slct.201802344] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Abdulkadir Shube Hussen
- D-305; Medicinal Chemistry Laboratory; Department of Chemistry; Indian Institute of technology Roorkee; Roorkee 247667 India
| | - Amar Prakash Pandey
- D-305; Medicinal Chemistry Laboratory; Department of Chemistry; Indian Institute of technology Roorkee; Roorkee 247667 India
| | - Anuj Sharma
- D-305; Medicinal Chemistry Laboratory; Department of Chemistry; Indian Institute of technology Roorkee; Roorkee 247667 India
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16
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Bayat M, Amiri Z. Recent Developments in Acenaphthoquinone-Based Multicomponent Reactions: Synthesis of Spiroacenaphthylene Compounds. Top Curr Chem (Cham) 2018; 376:26. [DOI: 10.1007/s41061-018-0204-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2017] [Accepted: 05/10/2018] [Indexed: 10/14/2022]
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17
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Pourian E, Javanshir S, Dolatkhah Z, Molaei S, Maleki A. Ultrasonic-Assisted Preparation, Characterization, and Use of Novel Biocompatible Core/Shell Fe 3O 4@GA@Isinglass in the Synthesis of 1,4-Dihydropyridine and 4 H-Pyran Derivatives. ACS OMEGA 2018; 3:5012-5020. [PMID: 31458714 PMCID: PMC6641881 DOI: 10.1021/acsomega.8b00379] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Accepted: 04/24/2018] [Indexed: 05/25/2023]
Abstract
This work focussed on the synthesis of a new catalytic material isinglass (IG)-based Fe3O4@GA@IG core/shell magnetic nanoparticles and the investigation of its catalytic activity in two important multicomponent reactions. Fe3O4 nanoparticles were prepared using a simple coprecipitation method and then coated with IG consisting predominantly of the protein collagen in the presence of glutaraldehyde as a cross-linking agent. The obtained hybrid material has been characterized by Fourier transform infrared analysis, scanning electron microscopy, transmission electron microscopy (TEM), vibrating sample magnetometry, energy-dispersive X-ray, X-ray diffraction (XRD), and Brunauer-Emmett-Teller analyses. The results of XRD analysis implied that the prepared nanocomposite consists of two compounds of crystalline magnetite and amorphous IG, and the formation of its core/shell structure had been confirmed by TEM images. The catalytic performance of the as-prepared core/shell bionanocatalyst was evaluated for the first time in the synthesis of 1,4-dihydropyridine and 4H-pyran derivatives under sonication in ethanol. This core/shell structure because of the superparamagnetic property of Fe3O4 and unique properties of IG as a bifunctional biocatalyst offers a high potential for many catalytic applications. Recycling study revealed that no significant decrease in the catalytic activity was observed even after six runs.
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Affiliation(s)
- Elham Pourian
- Heterocyclic
Chemistry Research Laboratory, Department of Chemistry, and Catalysts and
Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology, Tehran 16846-13114, Iran
| | - Shahrzad Javanshir
- Heterocyclic
Chemistry Research Laboratory, Department of Chemistry, and Catalysts and
Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology, Tehran 16846-13114, Iran
| | - Zahra Dolatkhah
- Heterocyclic
Chemistry Research Laboratory, Department of Chemistry, and Catalysts and
Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology, Tehran 16846-13114, Iran
| | - Shiva Molaei
- Heterocyclic
Chemistry Research Laboratory, Department of Chemistry, and Catalysts and
Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology, Tehran 16846-13114, Iran
| | - Ali Maleki
- Heterocyclic
Chemistry Research Laboratory, Department of Chemistry, and Catalysts and
Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology, Tehran 16846-13114, Iran
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18
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Dolatkhah Z, Javanshir S, Bazgir A, Mohammadkhani A. Magnetic Isinglass a Nano‐Bio Support for Copper Immobilization: Cu–IG@Fe 3O 4a Heterogeneous Catalyst for Triazoles Synthesis. ChemistrySelect 2018. [DOI: 10.1002/slct.201800501] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Zahra Dolatkhah
- Heterocyclic Chemistry Research LaboratoryDepartment of ChemistryIran University of Science and Technology Tehran 16846–13114 Iran
| | - Shahrzad Javanshir
- Heterocyclic Chemistry Research LaboratoryDepartment of ChemistryIran University of Science and Technology Tehran 16846–13114 Iran
| | - Ayoob Bazgir
- Department of ChemistryShahid Beheshti UniversityGeneral Campus Tehran 1983963113 Iran
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Huang LS, Hu X, Yu YQ, Xu DZ. Highly Efficient Heterogeneous Catalytic Synthesis of Densely Functionalized 2-Amino-4H
-pyrans under Mild Condition in Aqueous Media. ChemistrySelect 2017. [DOI: 10.1002/slct.201702411] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Lu-Shan Huang
- National Engineering Research Center of Pesticide (Tianjin); State Key Laboratory and Institute of Elemento-Organic Chemistry; Nankai University; Tianjin 300071 China
| | - Xin Hu
- National Engineering Research Center of Pesticide (Tianjin); State Key Laboratory and Institute of Elemento-Organic Chemistry; Nankai University; Tianjin 300071 China
| | - Ya-Qin Yu
- Key Laboratory for Water Environment and Resources; Tianjin Normal University; Tianjin 300387 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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Gajaganti S, Bajpai S, Srivastava V, Singh S. An efficient, room temperature, oxygen radical anion (O2•−) mediated, one-pot, and multicomponent synthesis of spirooxindoles. CAN J CHEM 2017. [DOI: 10.1139/cjc-2017-0432] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
The present report highlights an efficient use of oxygen radical anion to promote a room temperature multi-component synthesis of spirooxindoles (4a–4l) under mild reaction conditions. The potassium superoxide (KO2) and tetraethylammonium bromide (TEAB) combination generate the oxygen radical anion in situ to promote this transformation. This method offers a sustainable and direct access to the biologically important spirooxindole derivatives in good to excellent yields.
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Affiliation(s)
- Somaiah Gajaganti
- Department of Chemistry, Indian Institute of Technology — BHU, Varanasi 221 005, Uttar Pradesh, India
- Department of Chemistry, Indian Institute of Technology — BHU, Varanasi 221 005, Uttar Pradesh, India
| | - Shivam Bajpai
- Department of Chemistry, Indian Institute of Technology — BHU, Varanasi 221 005, Uttar Pradesh, India
- Department of Chemistry, Indian Institute of Technology — BHU, Varanasi 221 005, Uttar Pradesh, India
| | - Vandana Srivastava
- Department of Chemistry, Indian Institute of Technology — BHU, Varanasi 221 005, Uttar Pradesh, India
- Department of Chemistry, Indian Institute of Technology — BHU, Varanasi 221 005, Uttar Pradesh, India
| | - Sundaram Singh
- Department of Chemistry, Indian Institute of Technology — BHU, Varanasi 221 005, Uttar Pradesh, India
- Department of Chemistry, Indian Institute of Technology — BHU, Varanasi 221 005, Uttar Pradesh, India
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