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Bevernaege K, Tzouras NV, Poater A, Cavallo L, Nolan SP, Nahra F, Winne JM. Site selective gold(i)-catalysed benzylic C-H amination via an intermolecular hydride transfer to triazolinediones. Chem Sci 2023; 14:9787-9794. [PMID: 37736629 PMCID: PMC10510626 DOI: 10.1039/d3sc03683a] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2023] [Accepted: 08/22/2023] [Indexed: 09/23/2023] Open
Abstract
Triazolinediones are known as highly reactive dienophiles that can also act as electrophilic amination reagents towards enolisable C-H bonds (ionic pathway) or weak C-H bonds (free radical pathway). Here, we report that this C-H amination reactivity can be significantly extended and enhanced via gold(i)-catalysis. Under mild conditions, several alkyl-substituted aryls successfully undergo benzylic C-H aminations at room temperature. The remarkable site selectivity that is observed points towards strong electronic activation and deactivation effects, that go beyond a simple weakening of the C-H bond. The observed catalytic C-H aminations do not follow the expected trends for a free radical-type C-H amination and show complementarity to existing methods. Density functional theory (DFT) calculations and distinct experimental trends provide a clear mechanistic rationale for observed selectivity patterns, postulating a novel pathway for triazolinedione-induced aminations via a carbon-to-nitrogen hydride transfer.
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Affiliation(s)
- Kevin Bevernaege
- Department of Organic and Macromolecular Chemistry, Ghent University Krijgslaan 281-S4 B-9000 Ghent Belgium
| | - Nikolaos V Tzouras
- Department of Chemistry and Center for Sustainable Chemistry, Ghent University Krijgslaan 281-S3 B-9000 Ghent Belgium
| | - Albert Poater
- Departament de Química, Institut de Química Computacional i Catàlisi, Universitat de Girona C/Maria Aurèlia Capmany 69 17003 Girona Spain
| | - Luigi Cavallo
- KAUST Catalysis Center, Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology Thuwal 23955 Saudi Arabia
| | - Steven P Nolan
- Separation and Conversion Technology, VITO (Flemish Institute for Technological Research) Boeretang 200 2400 Mol Belgium
| | - Fady Nahra
- Department of Chemistry and Center for Sustainable Chemistry, Ghent University Krijgslaan 281-S3 B-9000 Ghent Belgium
- Separation and Conversion Technology, VITO (Flemish Institute for Technological Research) Boeretang 200 2400 Mol Belgium
| | - Johan M Winne
- Department of Organic and Macromolecular Chemistry, Ghent University Krijgslaan 281-S4 B-9000 Ghent Belgium
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2
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Mohajer F, Mohammadi Ziarani G, Badiei A, Voskressensky LG, Luque R. Novel sulfonated mesoporous organic–inorganic SBA@Pr-3AP-SO3H for the synthesis of phenyl-[1,2,4]-triazolidines. RESEARCH ON CHEMICAL INTERMEDIATES 2022. [DOI: 10.1007/s11164-022-04788-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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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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Ziarani GM, Mohajer F, Moradi R, Mofatehnia P. The Molecular Diversity Scope of Urazole in the Synthesis of Organic Compounds. Curr Org Synth 2020; 16:953-967. [PMID: 31984879 DOI: 10.2174/1570179416666190925162215] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2018] [Revised: 07/01/2019] [Accepted: 07/26/2019] [Indexed: 11/22/2022]
Abstract
BACKGROUND As a matter of fact, nitrogen as a hetero atom among other atoms has had an important role in active biological compounds. Since heterocyclic molecules with nitrogen are highly demanded due to biological properties, 4-phenylurazole as a compound containing nitrogen might be important in the multicomponent reaction used in agrochemicals, and pharmaceuticals. Considering the case of fused derivatives "pyrazolourazoles" which are highly applicable because of their application for analgesic, antibacterial, anti-inflammatory and antidiabetic activities as HSP-72 induction inhibitors (I and III) and novel microtubule assembly inhibitors. It should be mentioned that spiro-pyrazole also has biological activities like cytotoxic, antimicrobial, anticonvulsant, antifungal, anticancer, anti-inflammatory, and cardiotonic activities. OBJECTIVE Urazole has been used in many heterocyclic compounds which are valuable in organic syntheses. This review disclosed the advances in the use of urazole as the starting material in the synthesis of various biologically active molecules from 2006 to 2019. CONCLUSION Compounds of urazole (1,2,4-triazolidine-3,5-dione) are the most important molecules which are highly active from the biological perspective in the pharmaceuticals as well as polymers. In summary, many protocols for preparations of the urazole derivatives from various substrates in multi-component reactions have been reported from different aromatic and aliphatic groups which have had carbonyl groups in their structures. It is noted that several catalysts have been synthesized to afford applicable molecules with urazole scaffolds. In some papers, being environmentally friendly, short time reactions and high yields are highlighted in the protocols. There is a room to synthesize new catalysts and perform new reactions by manipulating urazole to produce biologically active compounds, even producing chiral urazole component as many groups of chiral urazole compounds are important from biological perspective.
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Affiliation(s)
| | | | - Razieh Moradi
- Department of Chemistry, Alzahra University, Tehran, Iran
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5
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Bartwal G, Khurana JM. A Catalyst Free One‐Pot Synthesis of Coumarin Functionalized Bis‐oxazines in Ethanol at Room Temperature. ChemistrySelect 2019. [DOI: 10.1002/slct.201902196] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Gaurav Bartwal
- Department of ChemistryUniversity of Delhi New Delhi - 110007 India
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6
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Meena K, Saroha M, Khurana I, Malik A, Rai PK, Khurana JM. Catalyst‐free one‐pot regioselective synthesis of benzo[
d
]imidazo[2,1‐
b
]thiazoles by heating or grinding. J Heterocycl Chem 2019. [DOI: 10.1002/jhet.3702] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Kalawati Meena
- Department of ChemistryUniversity of Delhi Delhi 110007 India
- Dyal Singh CollegeUniversity of Delhi Lodhi Road Delhi 110003 India
| | - Mohit Saroha
- Department of ChemistryUniversity of Delhi Delhi 110007 India
| | - Ishani Khurana
- Department of ChemistryUniversity of Delhi Delhi 110007 India
- Environment Safety GroupCentre for Fire, Explosive and Environment Safety (CFEES) Brig. S. K. Mazumdar Road, Timarpur Delhi 110054 India
| | - Amita Malik
- Dyal Singh CollegeUniversity of Delhi Lodhi Road Delhi 110003 India
| | - Pramod K. Rai
- Environment Safety GroupCentre for Fire, Explosive and Environment Safety (CFEES) Brig. S. K. Mazumdar Road, Timarpur Delhi 110054 India
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7
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Gupta S, Khurana JM. Catalyst‐Free One‐Pot Regioselective Synthesis of Spiropyrrolizines Using 1,3‐Dipolar Cycloaddition Reaction. ChemistrySelect 2019. [DOI: 10.1002/slct.201901531] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Shruti Gupta
- Department of ChemistryUniversity of Delhi New Delhi - 110007 India
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An efficient catalyst-free approach for the synthesis of novel isoxazolo[5,4-b]pyridine derivatives via one-pot three-component reaction. MONATSHEFTE FUR CHEMIE 2018. [DOI: 10.1007/s00706-018-2205-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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9
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Design, Synthesis, Anticancer Evaluation and Docking Studies of Novel Heterocyclic Derivatives Obtained via Reactions Involving Curcumin. Molecules 2018; 23:molecules23061398. [PMID: 29890691 PMCID: PMC6099980 DOI: 10.3390/molecules23061398] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2018] [Revised: 05/24/2018] [Accepted: 06/02/2018] [Indexed: 12/20/2022] Open
Abstract
Curcumin, a widely utilized flavor and coloring agent in food, has been shown to demonstrate powerful antioxidant, antitumor promoting and anti-inflammatory properties in vitro and in vivo. In the present work, synthesis of new heterocyclic derivatives based on Curcumin was studied. Compound 3 was synthesized via the reaction of furochromone carbaldehyde (1) with Curcumin (2) using pipredine as catalyst. Also, novel, 4,9-dimethoxy-5H-furo [3, 2-g] chromen-5-one derivatives 4a–d, 6a–d, 7, 8a–d, 9 and 10 were synthesized by the reactions of furochromone carbaldehyde (1) with different reagents (namely: appropriate amine 3a–d, appropriate hydrazine 5a–d, hydroxylamine hydrochloride, urea/thiourea, malononitrile, malononitrile with hydrazine hydrate). The structure of the synthesized products had been confirmed from their spectroscopic data (IR, 1H-NMR, 13C-NMR and mass spectra). In the present investigation, the newly synthesized products were screened using the MTT colorimetric assay for their in vitro inhibition capacity in two human cancer cell lines (hepatocellular carcinoma (HEPG2) and breast cancer (MCF-7) as well as the normal cell line (human normal melanocyte, HFB4) in comparison to the known anticancer drugs: 5-flurouracil and doxorubicin. The anticancer activity results indicated that the synthesized products 4c and 8b showed growth inhibition activity against HEPG2 cell line and synthesized products 4b and 8a showed growth inhibition activity against MCF-7, but with varying intensities in comparison to the known anticancer drugs, 5-flurouracil and doxorubicin. Cyclin dependent kinase 2 (CDK2), a major cell cycle protein, was identified as a potential molecular target of Curcumin. Furthermore, Curcumin induced G1 cell cycle arrest, which is regulated by CDK2 in cancer cells. Therefore, we used molecular modelling to study in silico the possible inhibitory effect of CDK2 by Curcumin derivatives as a possible mechanism of these compounds as anticancer agents. The molecular docking study revealed that compounds 4b, 8a and 8b were the most effective compounds in inhibiting CDk2, and, this result was in agreement with cytotoxicity assay.
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Gupta S, Aggarwal K, Khurana JM. Synthesis of Novel Functionalized Triphenylphosphanylidene-Spirobarbiturates through a Three-Component Reaction. ChemistrySelect 2018. [DOI: 10.1002/slct.201800264] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Shruti Gupta
- Department of Chemistry; University of Delhi; New Delhi−110007 India
| | - Komal Aggarwal
- Department of Chemistry; University of Delhi; New Delhi−110007 India
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Efficient syntheses of novel indeno[1,2-b]chromenone derivatives via hetero-Diels-Alder reactions of 2-(arylmethylene)-1H-indene-1,3(2H)-diones with enaminones. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.03.014] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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12
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Meena K, Khurana JM, Malik A. One-Pot Synthesis of Hydroxy Pyrazolo[1,2-a
][1,2,4]triazoles and Their Dehydration Using Recyclable Ionic Liquids as Reaction Media. J Heterocycl Chem 2017. [DOI: 10.1002/jhet.3006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Kalawati Meena
- Department of Chemistry; University of Delhi; Delhi 110007 India
- Dyal Singh College; University of Delhi; Lodhi Road Delhi 110003 India
| | | | - Amita Malik
- Dyal Singh College; University of Delhi; Lodhi Road Delhi 110003 India
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Saroha M, Khanna G, Khurana JM. Synthesis of Novel 5-Substituted 6-Phenylpyrrolo[2, 3-d
]pyrimidine Derivatives via One-pot Three-Component Reactions Under Catalyst-Free Condition. ChemistrySelect 2017. [DOI: 10.1002/slct.201701234] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Mohit Saroha
- Department of chemistry; University of Delhi; Delhi- 110007
| | - Garima Khanna
- Department of chemistry; University of Delhi; Delhi- 110007
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Khanna G, Saluja P, Khurana JM. Catalyst free ethylene glycol promoted synthesis of spiro[indene-2,2′-naphthalene]-4′-carbonitriles and spiro[naphthalene-2,5′-pyrimidine]-4-carbonitriles via one-pot three-component reaction. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.11.050] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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