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Kolagkis PX, Serviou SK, Stini NA, Demertzidou VP, Poursaitidis ET, Galathri EM, Mountanea OG, Skolia E, Kokotos CG. Deciphering the Knoevenagel condensation: towards a catalyst-free and water-mediated process. Org Biomol Chem 2024. [PMID: 39302224 DOI: 10.1039/d4ob01420k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/22/2024]
Abstract
The Knoevenagel condensation constitutes one of the most well-studied and crucial transformations in organic chemistry, since it facilitates the synthesis of numerous valuable compounds. With the advent of green chemistry, several alternative protocols for the Knoevenagel reaction have been introduced and catalyst-free approaches to the Knoevenagel condensation have also been mentioned, however the harsh temperatures employed and the limited substrate scope restricted their application. Herein, we have performed an extensive study on the catalyst-free and water-mediated Knoevenagel reaction, with specific focus on optimising the green parameters and metrics of our methodology. Additionally, we directly compared our approach with previous catalyst-free methods, while providing a fast assembly of multiple compounds in parallel.
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Affiliation(s)
- Periklis X Kolagkis
- Laboratory of Organic Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis, Athens 15771, Greece.
| | - Stamatis K Serviou
- Laboratory of Organic Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis, Athens 15771, Greece.
| | - Naya A Stini
- Laboratory of Organic Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis, Athens 15771, Greece.
| | - Vera P Demertzidou
- Laboratory of Organic Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis, Athens 15771, Greece.
| | - Efthymios T Poursaitidis
- Laboratory of Organic Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis, Athens 15771, Greece.
| | - Eirini M Galathri
- Laboratory of Organic Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis, Athens 15771, Greece.
| | - Olga G Mountanea
- Laboratory of Organic Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis, Athens 15771, Greece.
| | - Elpida Skolia
- Laboratory of Organic Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis, Athens 15771, Greece.
| | - Christoforos G Kokotos
- Laboratory of Organic Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis, Athens 15771, Greece.
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2
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Soliman AIA, Bacchus A, Zare R, Sutradhar S, Fatehi P. Cationic lignin as an efficient and sustainable homogenous catalyst for aqueous Knoevenagel condensation reactions. RSC Adv 2024; 14:29595-29605. [PMID: 39297031 PMCID: PMC11409447 DOI: 10.1039/d4ra05763e] [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: 08/08/2024] [Accepted: 09/06/2024] [Indexed: 09/21/2024] Open
Abstract
Knoevenagel condensation is a chemical reaction between aldehydes and active methylene-containing compounds in the presence of heterogeneous, basic homogenous organic or inorganic catalysts and solvent or neat systems. Herein, we introduced a new strategy for this synthesis by using the aqueous solution of cationic kraft lignin (CKL) as a catalyst. The CKL was synthesized through the reaction of kraft lignin (KL) with glycidyltrimethylammonium chloride (GTMAC) in a basic medium. The optimal reaction conditions for the Knoevenagel reaction were 5% catalyst load (weight of catalyst to the weight of benzaldehyde), water as the solvent, and at room temperature, which generated the products with a yield of 97%, illustrating that the CKL was an effective homogenous and green catalyst. The results confirmed that the increase in CKL charge density improved the product yield. The water-insoluble products were easily separated by filtration, and the filtrate containing the catalysts was reused effectively for 5 cycles without a significant decrease in the production yield, which would confirm the advantages of this catalyst for this reaction system. The CKL catalyst exhibited biodegradability comparable to KL. This paper discusses a novel method for Knoevenagel condensation reactions for different aldehydes in a green system utilizing a sustainable, biodegradable catalyst at room temperature and in an aqueous system.
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Affiliation(s)
- Ahmed I A Soliman
- Green Processes Research Centre and Chemical Engineering Department, Lakehead University 955 Oliver Road Thunder Bay P7B5E1 ON Canada +1 807 343 8697
- Chemistry Department, Faculty of Science, Assiut University Assiut 71516 Egypt
| | - Ameena Bacchus
- Green Processes Research Centre and Chemical Engineering Department, Lakehead University 955 Oliver Road Thunder Bay P7B5E1 ON Canada +1 807 343 8697
| | - Rozita Zare
- Green Processes Research Centre and Chemical Engineering Department, Lakehead University 955 Oliver Road Thunder Bay P7B5E1 ON Canada +1 807 343 8697
| | - Shrikanta Sutradhar
- Green Processes Research Centre and Chemical Engineering Department, Lakehead University 955 Oliver Road Thunder Bay P7B5E1 ON Canada +1 807 343 8697
| | - Pedram Fatehi
- Green Processes Research Centre and Chemical Engineering Department, Lakehead University 955 Oliver Road Thunder Bay P7B5E1 ON Canada +1 807 343 8697
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3
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Nurwita A, Stawicka K, Trejda M. SBA-15 Type Mesoporous Silica Modified with Vanadium as a Catalyst for Oxidative and Extractive Oxidative Desulfurization Processes. MATERIALS (BASEL, SWITZERLAND) 2024; 17:4041. [PMID: 39203219 PMCID: PMC11356509 DOI: 10.3390/ma17164041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/03/2024] [Revised: 08/01/2024] [Accepted: 08/11/2024] [Indexed: 09/03/2024]
Abstract
One of the current challenges is the reduction of sulfur emitted into the atmosphere, usually in the form of sulfur oxides generated by fossil fuel combustion. To achieve this goal, the sulfur content should be reduced in fuel. In this context, vanadium-containing materials based on SBA-15 mesoporous silica supports and two different sources of vanadium were prepared, characterized, and applied as catalysts for oxidative desulfurization (CODS) and extractive oxidative desulfurization processes (ECODSs). The novelty of this work was the comparative study of vanadium-containing materials in two desulfurization systems. The properties of the catalysts, the concentration and state of vanadium species, and their role in the catalytic process were examined by low-temperature nitrogen physisorption, XRD, UV-Vis, XPS, and chemisorption of pyridine combined with FTIR spectroscopy. The catalytic performance of the material prepared using ammonium metavanadate was superior to that of the catalyst obtained using vanadium(IV) oxide sulfate, which was explained by a higher concentration of vanadium species on the surface of the support and their lower oxidation state in the former. Both types of catalysts showed high activity and stability in the ECODS process.
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Affiliation(s)
| | | | - Maciej Trejda
- Department of Heterogeneous Catalysis, Faculty of Chemistry, Adam Mickiewicz University in Poznań, Uniwesytetu Poznańskiego 8, 61-614 Poznań, Poland; (A.N.); (K.S.)
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4
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Giricheva MA, Vorobiev IG, Belikov AA, Fukin GK, Budruev AV. Synthesis of 1,3-Dicarbonyl Azepines via Photoinitiated Reactions of Aryl Azides with Carbon-Based Nucleophiles. J Org Chem 2024; 89:10283-10292. [PMID: 38981920 DOI: 10.1021/acs.joc.4c01177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/11/2024]
Abstract
A photoinduced one-pot method for the synthesis of azepines by the reaction of aryl azides with 1,3-dicarbonyl compounds under weakly basic conditions is described. This method offers a simple route for the synthesis of 1,3-dicarbonyl-substituted azepines in good to excellent yields and high regioselectivity and was tested on 1,3-dicarbonyl compounds with different acidity levels. The resulting azepines have electrophilic and nucleophilic centers of varying degrees of activity, which facilitate reactions leading to further structural transformations.
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Affiliation(s)
- Marina A Giricheva
- Department of Chemistry, Lobachevsky State University of Nizhny Novgorod, 23 Gagarin Avenue, Nizhny Novgorod 603950, Russia
| | - Ivan G Vorobiev
- Department of Chemistry, Lobachevsky State University of Nizhny Novgorod, 23 Gagarin Avenue, Nizhny Novgorod 603950, Russia
| | - Alexey A Belikov
- Institute of Organometallic Chemistry of Russian Academy of Sciences, 49 Tropinina str, Nizhny Novgorod GSP-445, Russia
| | - Georgy K Fukin
- Institute of Organometallic Chemistry of Russian Academy of Sciences, 49 Tropinina str, Nizhny Novgorod GSP-445, Russia
| | - Andrei V Budruev
- Department of Chemistry, Lobachevsky State University of Nizhny Novgorod, 23 Gagarin Avenue, Nizhny Novgorod 603950, Russia
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5
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Zenebe FC, Taddesse AM, Sivasubramanian M, G. NB. Highly efficient CdS/CeO 2/Ag 3PO 4 nanocomposite as novel heterogenous catalyst for Knoevenagel condensation and acetylation reactions. Heliyon 2024; 10:e31798. [PMID: 38841498 PMCID: PMC11152677 DOI: 10.1016/j.heliyon.2024.e31798] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2024] [Revised: 05/21/2024] [Accepted: 05/22/2024] [Indexed: 06/07/2024] Open
Abstract
In light of environmental and economic concerns, the use of heterogeneous catalysts that can function under gentler reaction conditions has recently become popular. In this study by using the precipitation method, CdS/CeO2/Ag3PO4 ternary nanocomposites with varied molar proportions of CdS:CeO2/Ag3PO4 were produced. The catalysts' surface functional groups; morphology and crystal structures were examined using FTIR, SEM-EDX and XRD respectively. The catalytic efficiency of all synthesized nanomaterials was tested on a model Knoevenagel condensation reaction. For the best catalyst, selected from the screening, the optimization of reaction conditions such as the solvent, catalyst load, concentration of reagents such as malononitrile/acetic anhydride, and temperature. The ternary nanocomposite CdS/CeO2/Ag3PO4 (4:1) displayed higher catalytic activity (95.4 ± 3.2 %) than the rest of the nanomaterials prepared. Thus, the ternary nanocomposite CdS/CeO2/Ag3PO4 with 4:1 mol ratio with optimized reaction conditions was used to check the substrate scope of Knoevenagel condensation and acetylation reaction. The synthesized Knoevenagel condensation and acetylation reaction products were also characterized by proton and carbon NMR for their structure determination. The nanocomposite's reusability was carried out and only 7.5 ± 2 % decrement was witnessed after four runs and 23.3 % after the fifth run. and this indicates the potential application of the catalyst to organic reactions. Furthermore, we have proposed the possible catalytic mechanisms for both organic reactions.
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Affiliation(s)
| | - Abi M. Taddesse
- Department of Chemistry, Haramaya University, Haramaya, Ethiopia
| | | | - Neelaiah Babu G.
- Department of Chemistry, Haramaya University, Haramaya, Ethiopia
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6
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Wang Y, Chen LM, Liao XQ, Zhang GH, Zhang J. Solvent-Free Enzymatic Synthesis of Ethyl 3-Oxobutyrate Derivative: Characterization and Optimization of Reaction Condition. Appl Biochem Biotechnol 2024:10.1007/s12010-024-04981-9. [PMID: 38874842 DOI: 10.1007/s12010-024-04981-9] [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] [Accepted: 06/05/2024] [Indexed: 06/15/2024]
Abstract
It was first found that porcine pancreatic lipase (PPL) could catalyze the Knoevenagel condensation of aromatic aldehydes and ethyl acetoacetate under solvent-free conditions in this paper. Under solvent-free conditions, the highest yield of PPL catalytic reaction was 99.38%, and the Z/E selectivity of the product was 3.93. In addition, the reaction conditions were optimized, and the factors affecting the product structure were studied.
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Affiliation(s)
- Yun Wang
- School of Chemistry and Chemical Engineering, LingNan Normal University, Zhanjiang, 524048, China.
| | - Li-Mao Chen
- School of Chemistry and Chemical Engineering, LingNan Normal University, Zhanjiang, 524048, China
| | - Xiao-Qing Liao
- School of Chemistry and Chemical Engineering, LingNan Normal University, Zhanjiang, 524048, China
| | - Guo-Huan Zhang
- School of Chemistry and Chemical Engineering, LingNan Normal University, Zhanjiang, 524048, China
| | - Jie Zhang
- School of Chemistry and Chemical Engineering, LingNan Normal University, Zhanjiang, 524048, China
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7
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Sreedharan R, Gandhi T. Masters of Mediation: MN(SiMe 3) 2 in Functionalization of C(sp 3)-H Latent Nucleophiles. Chemistry 2024; 30:e202400435. [PMID: 38497321 DOI: 10.1002/chem.202400435] [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: 01/31/2024] [Revised: 03/16/2024] [Accepted: 03/18/2024] [Indexed: 03/19/2024]
Abstract
Organoalkali compounds have undergone a far-reaching transformation being a coupling partner to a mediator in unusual organic conversions which finds its spot in the field of sustainable synthesis. Transition-metal catalysis has always been the priority in C(sp3)-H bond functionalization, however alternatively, in recent times this has been seriously challenged by earth-abundant alkali metals and their complexes arriving at new sustainable organometallic reagents. In this line, the importance of MN(SiMe3)2 (M=Li, Na, K & Cs) reagent revived in C(sp3)-H bond functionalization over recent years in organic synthesis is showcased in this minireview. MN(SiMe3)2 reagent with higher reactivity, enhanced stability, and bespoke cation-π interaction have shown eye-opening mediated processes such as C(sp3)-C(sp3) cross-coupling, radical-radical cross-coupling, aminobenzylation, annulation, aroylation, and other transformations to utilize readily available petrochemical feedstocks. This article also emphasizes the unusual reactivity of MN(SiMe3)2 reagent in unreactive and robust C-X (X=O, N, F, C) bond cleavage reactions that occurred alongside the C(sp3)-H bond functionalization. Overall, this review encourages the community to exploit the untapped potential of MN(SiMe3)2 reagent and also inspires them to take up this subject to even greater heights.
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Affiliation(s)
- Ramdas Sreedharan
- Department of Chemistry, School of Advanced Sciences, Vellore Institute of Technology, Vellore, 632014, Tamil Nadu, India
| | - Thirumanavelan Gandhi
- Department of Chemistry, School of Advanced Sciences, Vellore Institute of Technology, Vellore, 632014, Tamil Nadu, India
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8
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Kamali E, Dreekvandy F, Mohammadkhani A, Heydari A. Modified nano magnetic Fe 2O 3-MgO as a high active multifunctional heterogeneous catalyst for environmentally beneficial carbon-carbon synthesis. BMC Chem 2024; 18:78. [PMID: 38643240 PMCID: PMC11032600 DOI: 10.1186/s13065-024-01176-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Accepted: 03/28/2024] [Indexed: 04/22/2024] Open
Abstract
In this study, novel nanomagnetic catalysts, namely Fe2O3-MgO@choline formate (Ch. F.) and Fe2O3-MgO@choline cyanide (Ch. CN), were synthesized through immobilizing choline-based ion liquids to magnetic support via a simple and cost-effective methodology. FT-IR, TGA, FE-SEM, VSM, EDS, BET, and XRD techniques were employed to assess and characterize these organic-inorganic compounds. Following the successful preparation of nanoparticles, the catalysts were utilized in Knoevenagel and benzoin condensations. Fe2O3-MgO@Ch.F. exhibited exceptional activity in Knoevenagel condensation under solvent-free conditions at room temperature, achieving high yields (91-98%) in a short timeframe. Similarly, Fe2O3-MgO@Ch.CN demonstrated remarkable activity in benzoin condensation under environmentally friendly solvent conditions, yielding higher isolated yields (76-88%). Furthermore, these magnetically recyclable multifunctional catalysts displayed the ability to be reused up to five times without a significant loss in efficiency. Additionally, the heterogeneity of this nanocatalyst was investigated using the hot filtration technique. The findings indicated that the reaction primarily occurs via a heterogeneous pathway.
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Affiliation(s)
- Ehsan Kamali
- Chemistry Department, Tarbiat Modares University, PO Box: 14155-4838, Tehran, Iran
| | - Fahim Dreekvandy
- Chemistry Department, Tarbiat Modares University, PO Box: 14155-4838, Tehran, Iran
| | | | - Akbar Heydari
- Chemistry Department, Tarbiat Modares University, PO Box: 14155-4838, Tehran, Iran.
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9
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Abdolmaleki M, Daraie M, Mirjafary Z. Hal-Py-SO 3H as a novel and recyclable catalyst for highly efficient synthesis of xanthene and spiropyran derivatives. Sci Rep 2024; 14:8085. [PMID: 38582948 PMCID: PMC10998835 DOI: 10.1038/s41598-024-58647-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2023] [Accepted: 04/02/2024] [Indexed: 04/08/2024] Open
Abstract
The aim of this research is to synthesize a new sulfonic acid catalyst based on halloysite nanotubes (Hal-Py-SO3H) and characterize it as a solid acid nanocatalyst by various analytical techniques such as Fourier-Transformed Infrared spectroscopy (FTIR), Thermal gravimetric Analysis (TGA), X-ray Diffraction (XRD) analysis, Scanning Electron Microscopy (SEM), Vibrating Energy-Dispersive X-ray analysis (EDX), Transmission electron microscopy (TEM) and X-ray atomic mapping. Furthermore, this new catalyst was evaluated in synthesizing spiropyran derivatives via multicomponent reactions (MCRs) and Xanthen derivatives under environmentally sustainable conditions. The main advantages of this approach include green conditions, excellent yields, quick reaction rates, and ease of preparation. Additionally it was observed that the catalyst exhibited robust stability even after multiple recycling processes, indicating its potential for practical applications in sustainable chemical transformations.
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Affiliation(s)
- Mohammad Abdolmaleki
- Department of Chemistry, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Mansoureh Daraie
- Department of Chemistry, Science and Research Branch, Islamic Azad University, Tehran, Iran.
| | - Zohreh Mirjafary
- Department of Chemistry, Science and Research Branch, Islamic Azad University, Tehran, Iran.
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10
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Kobayashi K, Tanaka T, Kon Y, Kawanami H, Koumura N. Enhancing continuous-flow reactions via compression-molding of solid catalysts and dilutants in packed-bed systems. RSC Adv 2024; 14:6598-6602. [PMID: 38390498 PMCID: PMC10882219 DOI: 10.1039/d3ra08088a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2023] [Accepted: 02/15/2024] [Indexed: 02/24/2024] Open
Abstract
In this study, we present an improved packed-bed system designed for continuous-flow reactions using platinum (Pt)-black powder and silica gel (SiO2). The Pt-leaching from the reaction column is suppressed via compression-molding of the Pt and SiO2. Scanning electron microscopy results and particle-size distribution analysis demonstrate that crushed and downsized SiO2 is effective in suppressing outflow. Furthermore, we successfully conducted a scaled-up experiment of the flow reaction using a large column, achieving excellent productivity.
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Affiliation(s)
- Kwihwan Kobayashi
- Interdisciplinary Research Center for Catalytic Chemistry, National Institute of Advanced Industrial Science and Technology Central 5, Higashi 1-1-1 Tsukuba Ibaraki 305-8565 Japan
| | - Teruhiko Tanaka
- Interdisciplinary Research Center for Catalytic Chemistry, National Institute of Advanced Industrial Science and Technology Central 5, Higashi 1-1-1 Tsukuba Ibaraki 305-8565 Japan
| | - Yoshihiro Kon
- Interdisciplinary Research Center for Catalytic Chemistry, National Institute of Advanced Industrial Science and Technology Central 5, Higashi 1-1-1 Tsukuba Ibaraki 305-8565 Japan
| | - Hajime Kawanami
- Interdisciplinary Research Center for Catalytic Chemistry, National Institute of Advanced Industrial Science and Technology Central 5, Higashi 1-1-1 Tsukuba Ibaraki 305-8565 Japan
| | - Nagatoshi Koumura
- Interdisciplinary Research Center for Catalytic Chemistry, National Institute of Advanced Industrial Science and Technology Central 5, Higashi 1-1-1 Tsukuba Ibaraki 305-8565 Japan
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11
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Machado TF, Utzeri G, Valente AJM, Serra MES, Murtinho D. Click nanosponge - A novel amine-rich β-cyclodextrin-based crosslinked polymer for heterogeneous catalysis. Carbohydr Polym 2024; 326:121612. [PMID: 38142073 DOI: 10.1016/j.carbpol.2023.121612] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Revised: 11/14/2023] [Accepted: 11/16/2023] [Indexed: 12/25/2023]
Abstract
Cyclodextrin-based nanosponges are promising materials for heterogeneous catalysis due to their inherent synthetic versatility, tunable porosity and nontoxicity. In this work, a primary amine-rich β-cyclodextrin nanosponge was synthesized via click imine condensation reaction between 1,6-hexamethylamine-functionalized β-cyclodextrin (CDAM) and glutaraldehyde (GLT) to afford CDGLAM, in mild conditions. The crosslinked polymer exhibited a BET surface area of 36.39 m2 g-1, an average pore diameter of 3.09 nm (as assessed by the BJH method), and thermal stability up to 253 °C. CDGLAM was tested as heterogeneous catalyst for the metal-free Henry and Knoevenagel reactions, between aromatic aldehydes and nitromethane or ethyl cyanoacetate, respectively, affording the products in moderate to very high yields. These results show the ease of preparation of β-CD-based nanosponges from a green chemistry perspective, as well as their potential for future use in catalytic systems.
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Affiliation(s)
- Tiago F Machado
- University of Coimbra, CQC-IMS, Department of Chemistry, 3004-535 Coimbra, Portugal
| | - Gianluca Utzeri
- University of Coimbra, CQC-IMS, Department of Chemistry, 3004-535 Coimbra, Portugal
| | - Artur J M Valente
- University of Coimbra, CQC-IMS, Department of Chemistry, 3004-535 Coimbra, Portugal
| | - M Elisa Silva Serra
- University of Coimbra, CQC-IMS, Department of Chemistry, 3004-535 Coimbra, Portugal
| | - Dina Murtinho
- University of Coimbra, CQC-IMS, Department of Chemistry, 3004-535 Coimbra, Portugal.
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12
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Peng SS, Zhang GS, Shao XB, Song XR, Qi SC, Tan P, Liu XQ, Yan J, Sun LB. Stable Mg Single-Atom Solid Base Catalysts Anchored on Metal-Organic Framework-Derived Nitrogen-Doped Carbon. Inorg Chem 2024; 63:1607-1612. [PMID: 38194295 DOI: 10.1021/acs.inorgchem.3c03566] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2024]
Abstract
Solid base catalysts are widely used in the chemical industry owing to their advantages of environmental friendliness and easy separation. However, their application is limited by basic site aggregation and poor stability. In this study, we report the preparation of magnesium (Mg) single-atom catalysts with high activity and stability by a sublimation-trapping strategy. The Mg net was sublimated as Mg vapor at 620 °C, subsequently transported through argon, and finally trapped on the defects of nitrogen-doped carbon derived from metal-organic framework ZIF-8, producing Mg1/NC. Because of the atomically dispersed Mg sites, the obtained Mg1/NC exhibits high catalytic activity and stability for Knoevenagel condensation of benzaldehyde with malononitrile, which is a typical base-catalyzed reaction. The Mg1/NC catalyst achieves a high efficiency with a turnover frequency of 49.6 h-1, which is much better than that of the traditional counterpart MgO/NC (7.7 h-1). In particular, the activity of Mg1/NC shows no decrease after five catalytic cycles, while that of MgO/NC declines due to the instability of basic sites.
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Affiliation(s)
- Song-Song Peng
- State Key Laboratory of Materials-Oriented Chemical Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), College of Chemical Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, China
| | - Guo-Song Zhang
- State Key Laboratory of Materials-Oriented Chemical Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), College of Chemical Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, China
| | - Xiang-Bin Shao
- State Key Laboratory of Materials-Oriented Chemical Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), College of Chemical Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, China
| | - Xing-Ru Song
- State Key Laboratory of Materials-Oriented Chemical Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), College of Chemical Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, China
| | - Shi-Chao Qi
- State Key Laboratory of Materials-Oriented Chemical Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), College of Chemical Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, China
| | - Peng Tan
- State Key Laboratory of Materials-Oriented Chemical Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), College of Chemical Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, China
| | - Xiao-Qin Liu
- State Key Laboratory of Materials-Oriented Chemical Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), College of Chemical Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, China
| | - Juntao Yan
- College of Chemistry and Environmental Engineering, Wuhan Polytechnic University, Wuhan 430023, China
| | - Lin-Bing Sun
- State Key Laboratory of Materials-Oriented Chemical Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), College of Chemical Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, China
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13
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Haloui R, Mkhayar K, Daoui O, El Khattabi K, El Abbouchi A, Chtita S, Elkhattabi S. Design of new small molecules derived from indolin-2-one as potent TRKs inhibitors using a computer-aided drug design approach. J Biomol Struct Dyn 2024:1-18. [PMID: 38217880 DOI: 10.1080/07391102.2024.2302944] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Accepted: 01/02/2024] [Indexed: 01/15/2024]
Abstract
Tropomyosin receptor kinase (TRKs) enzymes are responsible for cancers associated with the neurotrophic tyrosine kinase receptor gene fusion and are identified as effective targets for anticancer drug discovery. A series of small-molecule indolin-2-one derivatives showed remarkable biological activity against TRKs enzymatic activity. These small molecules could have an excellent profile for pharmaceutical application in the treatment of cancers caused by TRKs activity. The aim of this study is to modify the structure of these molecules to obtain new molecules with improved TRK inhibitory activity and pharmacokinetic properties favorable to the design of new drugs. Based on these series, we carried out a 3D-QSAR study. As a result, robust and reliable CoMFA and CoMSIA models are developed and applied to the design of 11 new molecules. These new molecules have a biological activity superior to the most active molecule in the starting series. The eleven designed molecules are screened using drug-likeness, ADMET proprieties, molecular docking, and MM-GBSA filters. The results of this screening identified the T1, T3, and T4 molecules as the best candidates for strong inhibition of TRKs enzymatic activity. In addition, molecular dynamics simulations are performed for TRK free and complexed with ligands T1, T3, and T4 to evaluate the stability of ligand-protein complexes over the simulation time. On the other hand, we proposed experimental synthesis routes for these newly designed molecules. Finally, the designed molecules T1, T2, and T3 have great potential to become reliable candidates for the conception of new drug inhibitors of TRKs.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Rachid Haloui
- Laboratory of Engineering, Systems, and Applications, National School of Applied Sciences, Sidi Mohamed Ben Abdellah-Fez University, Fez, Morocco
| | - Khaoula Mkhayar
- Laboratory of Engineering, Systems, and Applications, National School of Applied Sciences, Sidi Mohamed Ben Abdellah-Fez University, Fez, Morocco
| | - Ossama Daoui
- Laboratory of Engineering, Systems, and Applications, National School of Applied Sciences, Sidi Mohamed Ben Abdellah-Fez University, Fez, Morocco
| | - Kaouakeb El Khattabi
- Department of Fundamental Sciences, Faculty of Medicine Dentistry, Mohammed V University of Rabat, Rabat, Morocco
| | - Abdelmoula El Abbouchi
- Euromed Research Center, Euromed Faculty of Pharmacy, Euromed University of Fes (UEMF), Fez, Morocco
| | - Samir Chtita
- Laboratory of Analytical and Molecular Chemistry, Faculty of Sciences Ben M'Sik, Hassan II University of Casablanca, Casablanca, Morocco
| | - Souad Elkhattabi
- Laboratory of Engineering, Systems, and Applications, National School of Applied Sciences, Sidi Mohamed Ben Abdellah-Fez University, Fez, Morocco
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14
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Johari S, Johan MR, Khaligh NG. Organocatalytic Synthesis of (Hetero)arylidene Malononitriles Using a More Sustainable, Greener, and Scalable Strategy. Curr Org Synth 2024; 21:704-716. [PMID: 38231061 DOI: 10.2174/0115701794268766231108110816] [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: 08/03/2023] [Revised: 09/22/2023] [Accepted: 10/03/2023] [Indexed: 01/18/2024]
Abstract
AIM AND OBJECTIVE The establishment of a green and sustainable Knoevenagel condensation reaction in organic chemistry is still crucial. This work aimed to provide a newly developed metal-free and halogen-free catalytic methodology for the synthesis of CS and (hetero-) arylidene malononitriles in the laboratory and industrial scale. The Knoevenagel condensation reaction of various carbonyl groups with malononitrile was investigated in ethanol, an ecofriendly medium, in the presence of seven nitrogen-based organocatalysts. MATERIALS AND METHODS A comparative study was conducted using two as-obtained and four commercially available nitrogen-based organocatalysts in Knoevenagel condensation reactions. The synthesis of CS gas (2-chlorobenzylidene malononitrile) using a closed catalytic system was optimized based on their efficiency and greener approach. RESULTS The conversion of 100% and excellent yields were obtained in a short time. The products could be crystallized directly from the reaction mixture. After separating pure products, the residue solution was employed directly in the next run without any concentration, activation, purification, or separation. Furthermore, the synthesis of 2-chlorobenzylidenemahmonitrile (CS) was carried out on a large scale using imidazole as a selected nitrogen-based catalyst, afforded crystalline products with 95 ± 2% yield in five consecutive runs. CONCLUSION Energy efficiency, cost saving, greener conditions, using only 5 mol% of organocatalyst, high recyclability of catalyst, prevention of waste, recycling extractant by a rotary evaporator for non-crystallized products, demonstrated the potential commercial production of CS using imidazole in ethanol as an efficient and highly recyclable catalytic system.
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Affiliation(s)
- Suzaimi Johari
- Nanotechnology and Catalysis Research Center, Institute for Advanced Studies (IAS), University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Mohd Rafie Johan
- Nanotechnology and Catalysis Research Center, Institute for Advanced Studies (IAS), University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Nader Ghaffari Khaligh
- Nanotechnology and Catalysis Research Center, Institute for Advanced Studies (IAS), University of Malaya, 50603, Kuala Lumpur, Malaysia
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15
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Javahershenas R, Nikzat S. Recent developments using malononitrile in ultrasound-assisted multicomponent synthesis of heterocycles. ULTRASONICS SONOCHEMISTRY 2024; 102:106741. [PMID: 38176128 PMCID: PMC10793181 DOI: 10.1016/j.ultsonch.2023.106741] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2023] [Revised: 12/19/2023] [Accepted: 12/19/2023] [Indexed: 01/06/2024]
Abstract
Ultrasonic irradiation serves as a vigorous and environmentally sustainable approach for augmenting multicomponent reactions (MCRs), offering benefits such as thermal enhancement, agitation, and activation, among others. Malononitrile emerges as a versatile reagent in this context, participating in a myriad of MCRs to produce structurally diverse heterocyclic frameworks. This review encapsulates the critical role of malononitrile in the sonochemical multicomponent synthesis of these heterocyclic structures. The paper further delves into the biochemical and pharmacological implications of these heterocycles, elucidating their reaction mechanisms as well as delineating the method's scope and limitations. We furnish an overview of the merits and challenges inherent to this synthetic approach and offer insights for potential avenues in future research.
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Affiliation(s)
- Ramin Javahershenas
- Department of Organic Chemistry, Faculty of Chemistry, Urmia University, Urmia, Iran.
| | - Sahand Nikzat
- Chemical Physics Theory Group, Department of Chemistry, University of Toronto, Toronto, Ontario M5S 3H6, Canada.
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16
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Yang N, Zhu H, Sun X, Wu Y, Ding D, Chen Y. Surface-Immobilized ZnN x Sites as High-Performance Catalysts for Continuous Flow Knoevenagel Condensation in Water. ACS APPLIED MATERIALS & INTERFACES 2023; 15:59502-59511. [PMID: 38086739 DOI: 10.1021/acsami.3c14181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2023]
Abstract
By immobilizing the metal complex on the substrate surface, our previous results have demonstrated that heterogeneous catalysts with well-dispersed active MNC (metal-nitrogen-carbon) sites can be prepared in a rational and efficient manner. In this study, we employed agarose aerogel (AA) as the substrate to illustrate a straightforward strategy for immobilizing ZnNx sites on the surface. Under relatively low temperatures, the amine group of the ligand condenses with the surface carbonyl group generated in situ, resulting in the surface immobilized Zn sites. This can be supported by the IR, PXRD, and XPS data. Comprehensive characterization methods, including synchrotron powder XRD and spherical aberration-corrected TEM, confirmed the absence of ZnNx site aggregation in the surface immobilization process, even with a high Zn content (up to 8 wt %). The immobilized ZnNx sites exhibited high catalytic performance in Knoevenagel condensation, and α,β-unsaturated compounds were obtained with high yield in both batch and continuous flow reactions. AA-ZnNx-200 showed the best catalytic activity, which was processed under 200 °C with a Zn content of 4.62 wt %. The immobilized ZnNx sites activated both the aldehyde and nitrile substrates, which were quantitatively converted into the corresponding α,β-unsaturated compounds, with water as the solvent at room temperature. In continuous flow reaction conditions, a conversion rate up to 99% can be achieved with malononitrile. This heterogeneous catalyst can be facilely produced with quantitative yield in a large scale from cheap starting material under mild conditions. No catalyst deactivation was observed after seven batch reaction cycles or 80 h of continuous flow reaction, indicating its high robustness under catalytic reaction conditions. This catalyst enables a separation-free, energy-saving, and environment-friendly production process, offering a practical way for the industrial production.
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Affiliation(s)
- Nan Yang
- College of Chemistry & Chemical Engineering, Central South University, Changsha, Hunan 410083, China
| | - Hongyan Zhu
- College of Chemistry & Chemical Engineering, Central South University, Changsha, Hunan 410083, China
| | - Xiaoxu Sun
- College of Chemistry & Chemical Engineering, Central South University, Changsha, Hunan 410083, China
| | - Yuewei Wu
- Shaanxi Electric Power Research Institute, Xi'an, Shanxi 710054, China
| | - De Ding
- Shaanxi Electric Power Research Institute, Xi'an, Shanxi 710054, China
| | - Yin Chen
- College of Chemistry & Chemical Engineering, Central South University, Changsha, Hunan 410083, China
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17
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Mohamed MF, Ibrahim NS, Saddiq AA, Abdelhamid IA. Novel 3-(pyrazol-4-yl)-2-(1H-indole-3-carbonyl)acrylonitrile derivatives induce intrinsic and extrinsic apoptotic death mediated P53 in HCT116 colon carcinoma. Sci Rep 2023; 13:22486. [PMID: 38110432 PMCID: PMC10728220 DOI: 10.1038/s41598-023-48494-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Accepted: 11/27/2023] [Indexed: 12/20/2023] Open
Abstract
A novel series of α-cyano indolylchalcones was prepared, and their chemical structures were confirmed based on the different spectral data. Among them, compound 7f was observed to be the most effective bioactive chalcone with distinguished potency and selectivity against colorectal carcinoma (HCT116) with IC50 value (6.76 µg/mL) relative to the positive control (5 FU) (77.15 µg/mL). In a preliminary action study, the acrylonitrile chalcone 7f was found to enhance apoptotic action via different mechanisms like inhibition of some anti-apoptotic protein expression, regulation of some apoptotic proteins, production of caspases, and cell cycle arrest. All mechanisms suggested that compound 7f could act as a professional chemotherapeutic agent. Also, a molecular docking study was achieved on some selected proteins implicated in cancer (Caspase 9, XIAP, P53 mutant Y220C, and MDM2) which showed variable interactions with compound 7f with good Gibbs free energy scores.
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Affiliation(s)
- Magda F Mohamed
- Department of Chemistry, College of Science and Arts at Khaulis, University of Jeddah, Jeddah, Saudi Arabia.
- Department of Chemistry (Biochemistry Branch), Faculty of Science, Cairo University, Giza, Egypt.
| | - Nada S Ibrahim
- Department of Chemistry (Biochemistry Branch), Faculty of Science, Cairo University, Giza, Egypt
| | - Amna A Saddiq
- Department of Biology, College of Science and Arts at Khaulis, University of Jeddah, Jeddah, Saudi Arabia
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18
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Kalar PL, Jain K, Agrawal S, Khan S, Vishwakarma R, Shivhare A, Deshmukh MM, Das K. Green Synthesis of Electrophilic Alkenes Using a Magnesium Catalyst under Aqueous Conditions and Mechanistic Insights by Density Functional Theory. J Org Chem 2023. [PMID: 38038383 DOI: 10.1021/acs.joc.3c01540] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2023]
Abstract
A green approach for the synthesis of electrophilic alkenes has been developed via Knoevenagel condensation between active methylene compounds and carbonyl compounds using Mg powder under aqueous conditions. In this strategy, Mg(OH)2 acts as a catalyst, which was generated in situ by the reaction between metallic Mg (20 mol %) and water. Mg was found to be an efficient, nontoxic, and inexpensive metal catalyst system for producing a range of electrophilic alkenes in excellent yields (≤98%). A gram-scale synthesis of electrophilic alkenes has been developed, and Mg metal was recovered and recycled up to three times without an appreciable loss of catalytic activity. A catalytic cycle was proposed, and the reaction mechanism was investigated using density functional theory. The key steps are enolization of ethyl cyanoacetate, C-C bond formation, and then regeneration of the catalyst via metathesis with H2O. The overall reaction occurs easily with a maximum ΔG°⧧ value of 7.9 kcal/mol for the rate-determining C-C bond formation step. Our protocol has several advantages and can be further extended to one-pot sequential Knoevenagel condensation and Michael addition, and one-pot sequential Knoevenagel condensation and chemoselective reduction can be used for the synthesis of valuable precursors of pharmaceutical products under green and aqueous conditions.
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Affiliation(s)
- Pankaj Lal Kalar
- Department of Chemistry, School of Chemical Sciences and Technology, Dr. Harisingh Gour Central University, Sagar 470 003, Madhya Pradesh, India
| | - Kavita Jain
- Department of Chemistry, School of Chemical Sciences and Technology, Dr. Harisingh Gour Central University, Sagar 470 003, Madhya Pradesh, India
| | - Swatantra Agrawal
- Department of Chemistry, School of Chemical Sciences and Technology, Dr. Harisingh Gour Central University, Sagar 470 003, Madhya Pradesh, India
| | - Siddique Khan
- Department of Chemistry, School of Chemical Sciences and Technology, Dr. Harisingh Gour Central University, Sagar 470 003, Madhya Pradesh, India
| | - Rampal Vishwakarma
- School of Chemical Science, National Institute of Science Education and Research, OCC of HBNI, Bhubaneswar 752050, Odisha, India
| | - Ayush Shivhare
- Department of Chemistry, School of Chemical Sciences and Technology, Dr. Harisingh Gour Central University, Sagar 470 003, Madhya Pradesh, India
| | - Milind M Deshmukh
- Department of Chemistry, School of Chemical Sciences and Technology, Dr. Harisingh Gour Central University, Sagar 470 003, Madhya Pradesh, India
| | - Kalpataru Das
- Department of Chemistry, School of Chemical Sciences and Technology, Dr. Harisingh Gour Central University, Sagar 470 003, Madhya Pradesh, India
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19
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Kumar K, Kumar Sahani R, Garai S, Bhattacharya S. Synthesis and structural features of indium(III) furan-2-thiocarboxylates showing efficient catalytic activity toward multicomponent reactions via Knoevenagel condensation. Dalton Trans 2023; 52:17499-17513. [PMID: 37960984 DOI: 10.1039/d3dt02681g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2023]
Abstract
A series of furan-2-thiocarboxylate complexes of indium(III), Et3NH[In(SCOf)4] (1), iPr2NH2[In(SCOf)4] (2), [In(2,2'-bipy)(SCOf)3] (3a), and [In(1,10-phen)(SCOf)3] (3b), have been synthesized and structurally characterized. Complex 4, [In(TMEDA)(SCOf)(SH)2], was obtained by the partial hydrolysis of [In(TMEDA)(SCOf)3] (3). Heterobimetallic complexes [(SCOf)2In(μ-SCOf)2Cu(PPh3)2] (5) and [(SCOf)2In(μ-SCOf)2Ag(PPh3)2] (6), were also synthesized and characterized. In an attempt to synthesize the binary compound, In(SCOf)3 (7), a thioester fCOSCH2SCOf (8) was obtained serendipitously; thus, a novel convenient approach for thioester synthesis is introduced. The catalytic activities of all the complexes were assessed for Knoevenagel condensation and Knoevenagel initiated MCRs for the synthesis of chromene and imidazopyrimidine derivatives and it was found that complex 2 is a very efficient catalyst (much superior to the previously reported ones).
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Affiliation(s)
- Krishna Kumar
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi-221005, India.
| | - Raj Kumar Sahani
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi-221005, India.
| | - Somenath Garai
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi-221005, India.
| | - Subrato Bhattacharya
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi-221005, India.
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20
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Shekhar P, Datta Devulapalli VS, Reji R, Singh HD, Jose A, Singh P, Torris A, Vinod CP, Tokarz JA, Mahle JJ, Peterson GW, Borguet E, Vaidhyanathan R. COF-supported zirconium oxyhydroxide as a versatile heterogeneous catalyst for Knoevenagel condensation and nerve agent hydrolysis. iScience 2023; 26:108088. [PMID: 37942004 PMCID: PMC10628716 DOI: 10.1016/j.isci.2023.108088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 06/25/2023] [Accepted: 09/26/2023] [Indexed: 11/10/2023] Open
Abstract
A composite of catalytic Lewis acidic zirconium oxyhydroxides (8 wt %) and a covalent organic framework (COF) was synthesized. X-ray diffraction and infrared (IR) spectroscopy reveal that COF's structure is preserved after loading with zirconium oxyhydroxides. Electron microscopy confirms a homogeneous distribution of nano- to sub-micron-sized zirconium clusters in the COF. 3D X-ray tomography captures the micron-sized channels connecting the well-dispersed zirconium clusters on the COF. The crystalline ZrOx(OH)y@COF's nanostructure was model-optimized via simulated annealing methods. Using 0.8 mol % of the catalyst yielded a turnover number of 100-120 and a turnover frequency of 160-360 h-1 for Knoevenagel condensation in aqueous medium. Additionally, 2.2 mol % of catalyst catalyzes the hydrolysis of dimethyl nitrophenyl phosphate, a simulant of nerve agent Soman, with a conversion rate of 37% in 180 min. The hydrolytic detoxification of the live agent Soman is also achieved. Our study unveils COF-stabilized ZrOx(OH)y as a new class of zirconium-based Lewis + Bronsted-acid catalysts.
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Affiliation(s)
- Pragalbh Shekhar
- Department of Chemistry, Indian Institute of Science Education and Research, Pune 411008, India
- Centre for Energy Science, Indian Institute of Science Education and Research, Pune 411008, India
| | | | - Reshma Reji
- Department of Chemistry, Indian Institute of Science Education and Research, Pune 411008, India
- Centre for Energy Science, Indian Institute of Science Education and Research, Pune 411008, India
| | - Himan Dev Singh
- Department of Chemistry, Indian Institute of Science Education and Research, Pune 411008, India
- Centre for Energy Science, Indian Institute of Science Education and Research, Pune 411008, India
| | - Aleena Jose
- Department of Chemistry, Indian Institute of Science Education and Research, Pune 411008, India
- Centre for Energy Science, Indian Institute of Science Education and Research, Pune 411008, India
| | - Piyush Singh
- Department of Chemistry, Indian Institute of Science Education and Research, Pune 411008, India
- Centre for Energy Science, Indian Institute of Science Education and Research, Pune 411008, India
| | - Arun Torris
- CSIR-NCL, Polymer Science and Engineering (PSE), Pune 411008, India
| | | | - John A. Tokarz
- U.S. Army DEVCOM Chemical Biological Center, Aberdeen Proving Ground, MD 21010, USA
| | - John J. Mahle
- U.S. Army DEVCOM Chemical Biological Center, Aberdeen Proving Ground, MD 21010, USA
| | - Gregory W. Peterson
- U.S. Army DEVCOM Chemical Biological Center, Aberdeen Proving Ground, MD 21010, USA
| | - Eric Borguet
- Department of Chemistry, Temple University, Philadelphia, PA 19122, USA
| | - Ramanathan Vaidhyanathan
- Department of Chemistry, Indian Institute of Science Education and Research, Pune 411008, India
- Centre for Energy Science, Indian Institute of Science Education and Research, Pune 411008, India
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21
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Barzkar A, Beni AS. Fe 3O 4@C@MCM41-guanidine core-shell nanostructures as a powerful and recyclable nanocatalyst with high performance for synthesis of Knoevenagel reaction. Sci Rep 2023; 13:10336. [PMID: 37365219 DOI: 10.1038/s41598-023-36352-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Accepted: 06/01/2023] [Indexed: 06/28/2023] Open
Abstract
In this study, preparation, characterization and catalytic application of a novel core-shell structured magnetic with carbon and mesoporous silica shells supported guanidine (Fe3O4@C@MCM41-guanidine) are developed. The Fe3O4@C@MCM41-guanidine was prepared via surfactant directed hydrolysis and condensation of tetraethyl orthosilicate around Fe3O4@C NPs followed by treatment with guanidinium chloride. This nanocomposite was characterized by using Fourier transform infrared spectroscopy, vibrating sample magnetometry, scanning electron microscopy, transmission electron microscopy, energy dispersive X-ray spectroscopy, thermal gravimetric analysis, wide-angle X-ray diffraction and low-angle X-ray diffraction techniques. This nanocomposite have high thermal, chemical stability, and uniform size. Fe3O4@C@MCM41-guanidine catalyst demonstrated high yield (91-98%) to prepare of Knoevenagel derivatives under the solvent free conditions at room temperature in the shortest time. Also, this catalyst was recovered and reused 10 times without significant decrease in efficiency and stability. Fortunately, an excellent level of yield (98-82%) was observed in the 10 consecutive catalyst cycles.
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Affiliation(s)
- Aliyeh Barzkar
- Department of Chemistry, Faculty of Science, Yasouj University, Yasouj, 75918-74831, Iran
| | - Alireza Salimi Beni
- Department of Chemistry, Faculty of Science, Yasouj University, Yasouj, 75918-74831, Iran.
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22
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Naidu BR, Lakshmidevi J, Venkateswarlu K, Lakkaboyana SK. Highly economic and waste valorization strategy for multicomponent and Knoevenagel reactions using water extract of tamarind seed ash. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:71420-71429. [PMID: 35441290 DOI: 10.1007/s11356-022-20124-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Accepted: 04/03/2022] [Indexed: 06/14/2023]
Abstract
The application of solid organic waste-originated products in the preparation of synthetically and biologically significant compounds in aqueous media or pure water is a highly desired task in chemical synthesis that shows an effective solution to the circular economy and sustainable environment. In this article, we describe our research on the development of highly economic and sustainable protocols for the synthesis of biologically important oxygen-heterocycles (using a multicomponent reaction) and synthetically important olefins (via the Knoevenagel condensation reaction) using water extract of tamarind seed ash (WETS) as catalyst and aqueous reaction medium. The reactions are carried out at room temperature (RT) under toxic/problematic/volatile organic solvent-free conditions. Products of the current methods have been purified by using recrystallization technique. WETS was characterized from its FTIR, powder XRD, SEM, and EDAX data. Problematic and non-renewable solvents were avoided throughout the process from their synthesis to purification. The utilization of solid organic waste-originated catalyst and aqueous media, avoid of non-renewable substances as catalysts, media, separation solvents and promoters, and unobligating heating conditions can surely attract the attention of chemists towards exploring the waste-based products in chemical transformations.
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Affiliation(s)
- Bandameeda Ramesh Naidu
- Laboratory for Synthetic & Natural Products Chemistry Department of Chemistry, Yogi Vemana University, Kadapa, 516005, India
| | - Jangam Lakshmidevi
- Laboratory for Synthetic & Natural Products Chemistry Department of Chemistry, Yogi Vemana University, Kadapa, 516005, India
| | - Katta Venkateswarlu
- Laboratory for Synthetic & Natural Products Chemistry Department of Chemistry, Yogi Vemana University, Kadapa, 516005, India.
| | - Sivarama Krishna Lakkaboyana
- Department of Chemistry Vel Tech Rangarajan Dr. Sagunthala R&D Institute of Science and Technology Avadi, Chennai, 600062, India
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23
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Khalil NA, Ahmed EM, Zaher AF, Alhamaky SM, Osama N, El-Zoghbi MS. New benzothienopyran and benzothienopyranopyrimidine derivatives as topoisomerase I inhibitors: Design, synthesis, anticancer screening, apoptosis induction and molecular modeling studies. Bioorg Chem 2023; 137:106638. [PMID: 37257374 DOI: 10.1016/j.bioorg.2023.106638] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Revised: 05/15/2023] [Accepted: 05/23/2023] [Indexed: 06/02/2023]
Abstract
New benzothienopyran and benzothienopyranopyrimidine derivatives were synthesized based on the structural requirements of topoisomerase I inhibitors. All target compounds exhibited strong cytotoxic activity with GI50 range of 70.62 %-87.29 % in one dose NCI (USA) screening against 60 human tumor cell lines. Among the tested derivatives, eight compounds namely 4d, 4e, 4f, 5b, 5e, 6b, 6d, and 6f demonstrated broad spectrum and potent anticancer efficacy in five dose screening against all tested panels. DNA relaxation assay for the latter compounds showed that 4d, 5b, and 6f exhibited excellent inhibitory activity with IC50 range of 2.553-4.495 µM as compared to indenoisoquinoline reference drug (IC50 = 3.911 ± 0.21 µM). Moreover, the most active compounds were investigated for being topoisomerase poisons or catalytic inhibitors using DNA nicking assay. Compounds 4d and 6f were found to be potential Topo I poisons, whereas compound 5b has acted as Topo I suppressor. Analyzing cell cycle and induction of apoptosis for the most active compound 4d, revealed growth arrest at the S phase in MDA-MB-435 cells similarly to indenoisoquinoline reference drug. Additionally, in silico molecular modeling study for eight most active cytotoxic compounds in five dose screening demonstrated interaction with DNA as well as distinctive binding pattern similar to the reference indenoisoquinoline, indicating that the newly discovered targets are supposed to be promising candidates as Topo I inhibitors.
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Affiliation(s)
- Nadia A Khalil
- Pharmaceutical Organic Chemistry Department, Faculty of Pharmacy, Cairo University, Kasr El-Aini Street, Cairo 11562, Egypt.
| | - Eman M Ahmed
- Pharmaceutical Organic Chemistry Department, Faculty of Pharmacy, Cairo University, Kasr El-Aini Street, Cairo 11562, Egypt
| | - Ashraf F Zaher
- Pharmaceutical Organic Chemistry Department, Faculty of Pharmacy, Cairo University, Kasr El-Aini Street, Cairo 11562, Egypt
| | - Shimaa M Alhamaky
- Pharmaceutical Chemistry Department, Faculty of Pharmacy, Menoufia University, Shibin El kom, Gamal Abd El-Nasir Street, Shibin Elkom, 32511 Menoufia, Egypt
| | - Nada Osama
- Biochemistry Department, Faculty of Pharmacy, Menoufia University, Gamal Abd El Nasr st., Shibin Elkom, 32511 Menoufia, Egypt
| | - Mona S El-Zoghbi
- Pharmaceutical Chemistry Department, Faculty of Pharmacy, Menoufia University, Shibin El kom, Gamal Abd El-Nasir Street, Shibin Elkom, 32511 Menoufia, Egypt.
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24
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Karami N, Zarnegaryan A. Fabrication of immobilized molybdenum complex on functionalized graphene oxide as a novel catalyst for the synthesis of benzothiazoles. J Organomet Chem 2023. [DOI: 10.1016/j.jorganchem.2023.122696] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/29/2023]
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25
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Chang MY, Guo CR, Ho CH. Knoevenagel Condensation of Acetonedicarboxylates with Aldehydes. J Mol Struct 2023. [DOI: 10.1016/j.molstruc.2023.135478] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023]
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26
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Synthesis of a magnetic polystyrene-supported Cu(II)-containing heterocyclic complex as a magnetically separable and reusable catalyst for the preparation of N-sulfonyl-N-aryl tetrazoles. Sci Rep 2023; 13:3214. [PMID: 36828906 PMCID: PMC9958043 DOI: 10.1038/s41598-023-30198-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2022] [Accepted: 02/17/2023] [Indexed: 02/26/2023] Open
Abstract
In this work, a cost-effective, environmentally friendly, and convenient method for synthesizing a novel heterogeneous catalyst via modification of polystyrene using tetrazole-copper magnetic complex [Ps@Tet-Cu(II)@Fe3O4] has been successfully developed. The synthesized complex was analyzed using TEM (transmission electron microscopy), HRTEM (high resolution-transmission electron microscopy), STEM (scanning transmission electron microscopy), FFT (Fast Fourier transform), XRD (X-ray diffraction), FT-IR (Fourier transform-infrared spectroscopy), TG/DTG (Thermogravimetry and differential thermogravimetry), ICP-OES (Inductively coupled plasma-optical emission spectrometry), Vibrating sample magnetometer (VSM), EDS (energy dispersive X-ray spectroscopy), and elemental mapping. N-Sulfonyl-N-aryl tetrazoles were synthesized in high yields from N-sulfonyl-N-aryl cyanamides and sodium azide using Ps@Tet-Cu(II)@Fe3O4 nanocatalyst. The Ps@Tet-Cu(II)@Fe3O4 complex can be recycled and reused easily multiple times using an external magnet without significant loss of catalytic activity.
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D B, C S A, D SV, T AK, Somappa SB. Multicomponent Synthesis of Spiro-dihydropyridine Oxindoles via Cascade Spiro-cyclization of Knoevenagel/Aza-Michael Adducts. J Org Chem 2022; 87:13556-13563. [PMID: 36194438 DOI: 10.1021/acs.joc.2c01063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
An efficient, straightforward, and one-pot synthesis of biologically relevant spiro-dihydropyridine oxindoles was described via readily available isatin, malononitrile, allenoate, and amines. The metal/organocatalyst-free, Et3N-mediated reaction proceeds via cascade spiro-cyclization of in situ generated Knoevenagel/aza-Michael adducts. The reaction has great flexibility over electron-rich and electron-poor substituents affording desired products in good to excellent yields. We have also demonstrated the selected spiro-dihydropyridines for late-stage diversification into new spiro-dihydropyridine hybrids of pharmaceutical relevance.
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Affiliation(s)
- Basavaraja D
- Chemical Sciences & Technology Division, CSIR-National Institute for Interdisciplinary Science & Technology (NIIST), Thiruvanthapuram 695019, Kerala, India.,Academy of Scientific and Innovative Research (AcSIR, Ghaziabad 201002, India
| | - Athira C S
- Chemical Sciences & Technology Division, CSIR-National Institute for Interdisciplinary Science & Technology (NIIST), Thiruvanthapuram 695019, Kerala, India.,Academy of Scientific and Innovative Research (AcSIR, Ghaziabad 201002, India
| | - Siddalingeshwar V D
- Chemical Sciences & Technology Division, CSIR-National Institute for Interdisciplinary Science & Technology (NIIST), Thiruvanthapuram 695019, Kerala, India.,Academy of Scientific and Innovative Research (AcSIR, Ghaziabad 201002, India
| | - Ashitha K T
- Chemical Sciences & Technology Division, CSIR-National Institute for Interdisciplinary Science & Technology (NIIST), Thiruvanthapuram 695019, Kerala, India.,Academy of Scientific and Innovative Research (AcSIR, Ghaziabad 201002, India
| | - Sasidhar B Somappa
- Chemical Sciences & Technology Division, CSIR-National Institute for Interdisciplinary Science & Technology (NIIST), Thiruvanthapuram 695019, Kerala, India.,Academy of Scientific and Innovative Research (AcSIR, Ghaziabad 201002, India
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28
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Xu H, Zhang LX, Xing Y, Yin YY, Tang B, Bie LJ. Self-assembled mononuclear complexes: open metal sites and inverse dimension-dependent catalytic activity for the Knoevenagel condensation and CO 2 cycloaddition. NANOSCALE 2022; 14:15897-15907. [PMID: 36268659 DOI: 10.1039/d2nr04103k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
To lessen the greenhouse effect, measures such as improving the recovery of crude oil and converting carbon dioxide (CO2) into valuable chemicals are necessary to create a sustainable low-carbon future. To this end, the development of efficient new oil-displacing agents and CO2 conversion has aroused great interest in both academia and industry. The Knoevenagel condensation and CO2 cycloaddition are the key reactions to solve the above problems. Four Cu- or Zn-based molecular complexes built from different ligands possessing hydrophilic-hydrophobic layers and different dimensionalities were chosen as solid catalysts for this study. Structural analysis revealed the presence of hydrophilic-hydrophobic layers and open metal sites in the low-dimensional complexes. To obtain deep insight into the reaction mechanism, first-principles density functional theory (DFT) calculations were carried out. These calculations confirmed that in the Knoevenagel condensation reaction, the final formation of benzylidenemalononitrile is the rate-determining step (an energy barrier (ΔE) value of 73.2 kJ mol-1). The zero-dimensional (0D) Cu molecular complex with unsaturated metal centers, hydrophilic and hydrophobic layers, exhibited higher catalytic activity (yield: 100%, temperature: room temperature, and time: 2 h) compared with one- and two-dimensional Cu complexes. In the presence of a 0D Zn complex co-catalyzed with Br- in the CO2 cycloaddition reaction, the ΔE value reduces to 35.5 kJ mol-1 for the ring opening of styrene oxide (SO), which is significantly lower than Br- catalyzed (80.9 kJ mol-1) reactions. The roles of unsaturated metal centers, hydrophilic-hydrophobic layers and dimensionality in the Knoevenagel condensation and CO2 cycloaddition were explained in the results of structure-activity relationships.
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Affiliation(s)
- Heng Xu
- School of Materials Science and Engineering, Tianjin Key Lab for Photoelectric Materials and Devices, Key Laboratory of Display Materials and Photoelectric Devices (Ministry of Education), National Demonstration Center for Experimental Function Materials Education, Tianjin University of Technology, Tianjin 300384, China.
| | - Le-Xi Zhang
- School of Materials Science and Engineering, Tianjin Key Lab for Photoelectric Materials and Devices, Key Laboratory of Display Materials and Photoelectric Devices (Ministry of Education), National Demonstration Center for Experimental Function Materials Education, Tianjin University of Technology, Tianjin 300384, China.
| | - Yue Xing
- School of Materials Science and Engineering, Tianjin Key Lab for Photoelectric Materials and Devices, Key Laboratory of Display Materials and Photoelectric Devices (Ministry of Education), National Demonstration Center for Experimental Function Materials Education, Tianjin University of Technology, Tianjin 300384, China.
| | - Yan-Yan Yin
- Department of Environmental Science and Engineering, Nankai University Binhai College, Tianjin 300270, China.
| | - Bo Tang
- School of Materials Science and Engineering, Tianjin Key Lab for Photoelectric Materials and Devices, Key Laboratory of Display Materials and Photoelectric Devices (Ministry of Education), National Demonstration Center for Experimental Function Materials Education, Tianjin University of Technology, Tianjin 300384, China.
| | - Li-Jian Bie
- School of Materials Science and Engineering, Tianjin Key Lab for Photoelectric Materials and Devices, Key Laboratory of Display Materials and Photoelectric Devices (Ministry of Education), National Demonstration Center for Experimental Function Materials Education, Tianjin University of Technology, Tianjin 300384, China.
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29
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Masoudi-Khoram M, Zargarian M, Nematollahi D, Zolfigol MA, Sepehrmansourie H, Khazalpour S. Convergent paired electrosynthesis of different types of bis-β-diketone derivatives based on the knoevenagel condensation reaction under green conditions. Electrochim Acta 2022. [DOI: 10.1016/j.electacta.2022.141512] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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30
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Soni R, Khan R, Burange AS, Sahani AJ, Bavera S, Achary S, Jayaram RV. Catalytic application of K2Ce(PO4)2 in Knoevenagel condensation -A green protocol. J INDIAN CHEM SOC 2022. [DOI: 10.1016/j.jics.2022.100680] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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31
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Heteroployacid on the composite of boehmite and polyionic liquid as a catalyst for alcohol oxidation and tandem alcohol oxidation Knoevenagel condensation reactions. Sci Rep 2022; 12:16395. [PMID: 36180555 PMCID: PMC9525677 DOI: 10.1038/s41598-022-20699-2] [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: 05/19/2022] [Accepted: 09/16/2022] [Indexed: 11/18/2022] Open
Abstract
Using boehmite as an available and low-cost natural compound, a bi-functional catalytic composite is prepared through vinyl-functionalization of boehmite, followed by polymerization with the as-prepared bis-vinylimidazolium bromide ionic liquid and supporting of phosphotungstic acid. The catalyst was characterized via ICP, XRD, TGA, FTIR, SEM/EDS and elemental mapping analysis and applied for promoting alcohol oxidation reaction and one-pot tandem alcohol oxidation/Knoevenagel condensation reaction in aqueous media under mild reaction condition. The results indicated high catalytic activity of the catalyst for both reactions. This protocol showed high generality and aliphatic, aromatic and heterocyclic alcohols could be applied as substrates to furnish the corresponding products in high to excellent yields. Furthermore, hot filtration test confirmed true heterogeneous nature of the catalysis. The catalyst could also be recovered readily and reused for at least five runs of the reaction with low loss of the activity and phosphotungstic acid leaching upon each run.
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32
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Yan Z, Liu Y, Wang W, Wang D. Functionalized Nylon 6 Fabric as an Efficient and Recyclable Catalyst for Knoevenagel Condensation. ACS OMEGA 2022; 7:33186-33191. [PMID: 36157727 PMCID: PMC9494687 DOI: 10.1021/acsomega.2c03401] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Accepted: 08/18/2022] [Indexed: 06/16/2023]
Abstract
Nylon 6 fabrics were chemically modified via reduction with BH3 for being functionalized as heterogeneous base organocatalysts for Knoevenagel condensation. The results of FTIR, XPS, and SEM indicated the successful modification of nylon 6 fabrics. With a low catalytic dosage of 6.6 mol % and a short reaction time (2 h), the fabric catalysts were well applicable to Knoevenagel condensation of a wide range of substrates and up to 98% yield could be obtained. In addition, the fabric catalysts have some beneficial advantages in terms of easy separation, good reusability, and recyclability (up to 10 times).
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33
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Sayed M, Shi Z, Gholami F, Fatehi P, Soliman AIA. Ag@TiO 2 Nanocomposite as an Efficient Catalyst for Knoevenagel Condensation. ACS OMEGA 2022; 7:32393-32400. [PMID: 36120061 PMCID: PMC9476541 DOI: 10.1021/acsomega.2c03852] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Accepted: 08/19/2022] [Indexed: 06/15/2023]
Abstract
In the present study, a new series of different heterocycles was synthesized through base-free Knoevenagel condensation of various aldehydes and active methylene-containing compounds using the hydrothermal developed Ag@TiO2 as a heterogeneous catalyst. The catalyst was synthesized by mixing TiO2 (P25) with AgNO3 and hydrothermally treated in ethanol at 180 °C for 12 h. The developed Ag@TiO2 catalyst was directly applied for Knoevenagel condensation, and the optimized procedure involved stirring the aldehydes and active methylene-containing compounds with Ag@TiO2 in ethanol at 65 °C. The reaction scope was investigated for various aromatic and heterocyclic aldehydes with active methylene-containing compounds, and the isolated yields were significantly high. The reusability of the catalyst was investigated for up to five cycles, where an insignificant decrease in the catalyst's reactivity was observed. Also, the reaction could proceed in water as a solvent, and the isolated yield was 40%. Hence, this protocol features mild reaction conditions, a facile procedure, and clean reaction profiles.
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Affiliation(s)
- Mostafa Sayed
- Department
of Chemistry, University of Science and
Technology of China, Hefei 230026, China
- Chemistry
Department, Faculty of Science, New Valley
University, El-Kharja 72511, Egypt
| | - Zhipeng Shi
- Department
of Chemistry, University of Science and
Technology of China, Hefei 230026, China
| | - Farzad Gholami
- Chemical
Engineering Department, Lakehead University, Thunder Bay, ON P7B5E1, Canada
| | - Pedram Fatehi
- Chemical
Engineering Department, Lakehead University, Thunder Bay, ON P7B5E1, Canada
| | - Ahmed I. A. Soliman
- Chemical
Engineering Department, Lakehead University, Thunder Bay, ON P7B5E1, Canada
- Chemistry
Department, Faculty of Science, Assiut University, Assiut 71516, Egypt
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34
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Topaloğlu Aksoy B, Erol I, Kandemir H, Saglam MF, Sengul IF, Çoşut B. Investigation of Spectroscopic Properties of Mono and Di-styryl Indole-Containing BODIPYs. Inorganica Chim Acta 2022. [DOI: 10.1016/j.ica.2022.121230] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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35
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Mannarsamy M, Nandeshwar M, Muduli G, Prabusankar G. Highly Active Cyclic Zinc(II) Thione Catalyst for C-C and C-N Bond Formation Reactions. Chem Asian J 2022; 17:e202200594. [PMID: 35880638 DOI: 10.1002/asia.202200594] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Revised: 07/23/2022] [Indexed: 11/12/2022]
Abstract
The first discrete seven-membered cyclic zinc(II) complex catalyzed room temperature Knoevenagel condensation reactions, and the synthesis of perimidine derivatives has been reported under mild reaction conditions. The cyclic zinc(II) complex [( L) ZnBr 2 ] ( 1 ) was isolated from the reaction between 1-(2-hydroxyethyl)-3-isopropyl-benzimidazole-2-thione ( L ) and ZnBr 2 . Complex 1 was characterized by different analytic techniques such as FT-IR, CHNS, TGA, NMR, and SCXRD. The mononuclear zinc(II) complex 1 was utilized as a catalyst for Knoevenagel condensation reactions to isolate twenty different substituted methylene malononitriles with excellent yield. Besides, the zinc(II) thione complex 1 was utilized for the synthesis of 2,4-dihydroperimidine derivatives in a highly efficient manner. Catalyst 1 depicted wide substrate scopes. Overall, twenty different substituted methylene malononitriles and nine different perimidine derivatives were synthesized using catalyst 1 at room temperature. The present investigation features a mild and fast synthetic approach along with excellent functional group tolerance.
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Affiliation(s)
| | | | | | - Ganesan Prabusankar
- Indian Institute of Technology-Hyderabad, Chemistry, Kandi Medak Telangana India 502285, 502285, 502285, Hyderabad, INDIA
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36
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Huang GQ, Chen J, Huang YL, Wu K, Luo D, Jin JK, Zheng J, Xu SH, Lu W. Mixed-Linker Isoreticular Zn(II) Metal-Organic Frameworks as Brønsted Acid-Base Bifunctional Catalysts for Knoevenagel Condensation Reactions. Inorg Chem 2022; 61:8339-8348. [PMID: 35575208 DOI: 10.1021/acs.inorgchem.2c00941] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Multicomponent metal-organic frameworks (MOFs) have received an increasing amount of attention due to their potential to produce new topologies, pore metrics, and functionalities compared to MOFs with a single metal cluster and one organic linker. Herein, five isoreticular Zn MOFs were obtained by mixing two types of linear ditopic linkers in a one-pot solvothermal synthesis. Interestingly, in the resulting Zn MOFs a six-connected cyclic trinuclear Zn(II) cluster and an eight-connected linear trinuclear Zn(II) cluster coexist, leading to an uncommon (6,8)-connected network. Catalytic activities toward the solvent-free Knoevenagel reactions were observed for all of these MOFs. Further experimental and computational studies suggest that they are Brønsted acid-base bifunctional catalysts. Through chemical modifications of dicarboxylate ligands, including their aromatic backbones and substituents, we have successfully implemented reticular chemistry for the modulations of pore sizes, surface areas, and catalytic performances in a series of four-component isoreticular MOFs.
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Affiliation(s)
- Guo-Quan Huang
- College of Chemistry and Materials Science, Jinan University, Guangzhou 510632, P. R. China
- Guangdong Provincial Key Laboratory of Functional Supramolecular Coordination Materials and Applications, Jinan University, Guangzhou 510632, P. R. China
| | - Jun Chen
- College of Chemistry and Materials Science, Jinan University, Guangzhou 510632, P. R. China
- Guangdong Provincial Key Laboratory of Functional Supramolecular Coordination Materials and Applications, Jinan University, Guangzhou 510632, P. R. China
| | - Yong-Liang Huang
- Department of Chemistry, Shantou University Medical College, Shantou, Guangdong 515041, P. R. China
| | - Kun Wu
- College of Chemistry and Materials Science, Jinan University, Guangzhou 510632, P. R. China
- Guangdong Provincial Key Laboratory of Functional Supramolecular Coordination Materials and Applications, Jinan University, Guangzhou 510632, P. R. China
| | - Dong Luo
- College of Chemistry and Materials Science, Jinan University, Guangzhou 510632, P. R. China
- Guangdong Provincial Key Laboratory of Functional Supramolecular Coordination Materials and Applications, Jinan University, Guangzhou 510632, P. R. China
| | - Ji-Kang Jin
- College of Chemistry and Materials Science, Jinan University, Guangzhou 510632, P. R. China
- Guangdong Provincial Key Laboratory of Functional Supramolecular Coordination Materials and Applications, Jinan University, Guangzhou 510632, P. R. China
| | - Ji Zheng
- College of Chemistry and Materials Science, Jinan University, Guangzhou 510632, P. R. China
- Guangdong Provincial Key Laboratory of Functional Supramolecular Coordination Materials and Applications, Jinan University, Guangzhou 510632, P. R. China
| | - Shi-Hai Xu
- College of Chemistry and Materials Science, Jinan University, Guangzhou 510632, P. R. China
| | - Weigang Lu
- College of Chemistry and Materials Science, Jinan University, Guangzhou 510632, P. R. China
- Guangdong Provincial Key Laboratory of Functional Supramolecular Coordination Materials and Applications, Jinan University, Guangzhou 510632, P. R. China
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37
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Co-Doped, Tri-Doped, and Rare-Earth-Doped g-C3N4 for Photocatalytic Applications: State-of-the-Art. Catalysts 2022. [DOI: 10.3390/catal12060586] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/10/2022] Open
Abstract
Rapid industrialization and overpopulation have led to energy shortages and environmental pollution, accelerating research to solve the issues. Currently, metal-free photocatalysts have gained the intensive attention of scientists due to their environmental-friendly nature and ease of preparation. It was noticed that g-C3N4 (GCN) consists of a few outstanding properties that could be used for various applications such as water treatment and clean energy production. Nonetheless, bare GCN contains several drawbacks such as high charge recombination, limited surface area, and low light sensitivity. Several solutions have been applied to overcome GCN limitations. Co-doping, tri-doping, and rare-earth-doping can be effective solutions to modify the GCN structure and improve its performance toward photocatalysis. This review highlights the function of multi-elemental and rare-earth dopants in GCN structure, mechanisms, and performance for photocatalytic applications as well as the advantages of co-doping, tri-doping, and rare-earth-doping of GCN. This review summarizes the different roles of dopants in addressing the limitations of GCN. Therefore, this article critically reviewed how multi-elemental and rare-earth-doping affect GCN properties and enhanced photoactivity for various applications.
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38
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Gandhi S, Sharma V, Koul IS, Mandal SK. Shedding Light on the Lewis Acid Catalysis in Organic Transformations Using a Zn-MOF Microflower and Its ZnO Nanorod. Catal Letters 2022. [DOI: 10.1007/s10562-022-04004-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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39
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Novel Pyridinium Based Ionic Liquid Promoter for Aqueous Knoevenagel Condensation: Green and Efficient Synthesis of New Derivatives with Their Anticancer Evaluation. Molecules 2022; 27:molecules27092940. [PMID: 35566291 PMCID: PMC9105511 DOI: 10.3390/molecules27092940] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Revised: 04/30/2022] [Accepted: 05/01/2022] [Indexed: 11/22/2022] Open
Abstract
Herein, a distinctive dihydroxy ionic liquid ([Py-2OH]OAc) was straightforwardly assembled from the sonication of pyridine with 2-chloropropane-1,3-diol by employing sodium acetate as an ion exchanger. The efficiency of the ([Py-2OH]OAc as a promoter for the sono-synthesis of a novel library of condensed products through DABCO-catalyzed Knoevenagel condensation process of adequate active cyclic methylenes and ninhydrin was next investigated using ultimate greener conditions. All of the reactions studied went cleanly and smoothly, and the resulting Knoevenagel condensation compounds were recovered in high yields without detecting the aldol intermediates in the end products. Compared to traditional strategies, the suggested approach has numerous advantages including mild reaction conditions with no by-products, eco-friendly solvent, outstanding performance in many green metrics, and usability in gram-scale synthesis. The reusability of the ionic liquid was also studied, with an overall retrieved yield of around 97% for seven consecutive runs without any substantial reduction in the performance. The novel obtained compounds were further assessed for their in vitro antitumor potential toward three human tumor cell lines: Colo-205 (colon cancer), MCF-7 (breast cancer), and A549 (lung cancer) by employing the MTT assay, and the findings were evaluated with the reference Doxorubicin. The results demonstrated that the majority of the developed products had potent activities at very low doses. Compounds comprising rhodanine (5) or chromane (12) moieties exhibited the most promising cytotoxic effects toward three cell lines, particularly rhodanine carboxylic acid derivative (5c), showing superior cytotoxic effects against the investigated cell lines compared to the reference drug. Furthermore, automated docking simulation studies were also performed to support the results obtained.
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40
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Monday Abel Otache, Duru RU, Ozioma A, Abayeh JO. Catalytic Methods for the Synthesis of Sugar Esters. CATALYSIS IN INDUSTRY 2022. [DOI: 10.1134/s2070050422010068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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41
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Soliman AIA, Sayed M, Elshanawany MM, Younis O, Ahmed M, Kamal El-Dean AM, Abdel-Wahab AMA, Wachtveitl J, Braun M, Fatehi P, Tolba MS. Base-Free Synthesis and Photophysical Properties of New Schiff Bases Containing Indole Moiety. ACS OMEGA 2022; 7:10178-10186. [PMID: 35382296 PMCID: PMC8973100 DOI: 10.1021/acsomega.1c06636] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Accepted: 02/17/2022] [Indexed: 05/04/2023]
Abstract
Schiff bases represent an essential class in organic chemistry with antitumor, antiviral, antifungal, and antibacterial activities. The synthesis of Schiff bases requires the presence of an organic base as a catalyst such as piperidine. Base-free synthesis of organic compounds using a heterogeneous catalyst has recently attracted more interest due to the facile procedure, high yield, and reusability of the used catalyst. Herein, we present a comparative study to synthesize new Schiff bases containing indole moieties using piperidine as an organic base catalyst and Au@TiO2 as a heterogeneous catalyst. In both methods, the products were isolated in high yields and fully characterized using different spectral analysis techniques. The catalyst was reusable four times, and the activity was slightly decreased. The presence of Au increases the number of acidic sites of TiO2, resulting in C=O polarization. Yields of the prepared Schiff bases in the presence of Au@TiO2 and piperidine were comparable. However, Au@TiO2 is an easily separable and recyclable catalyst, which would facilitate the synthesis of organic compounds without applying any hazardous materials. Furthermore, the luminescence behavior of the synthesized Schiff bases exhibited spectral shape dependence on the substituent group. Interestingly, the compounds also displayed deep-blue fluorescence with Commission Internationale de l'Éclairage (CIE) coordinates of y < 0.1. Thus, these materials may contribute to decreasing the energy consumption of the emitting devices.
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Affiliation(s)
- Ahmed I. A. Soliman
- Chemistry
Department, Faculty of Science, Assiut University, Assiut 71516, Egypt
- Chemical
Engineering Department, Lakehead University, 955 Oliver Road, Thunder Bay, Ontario P7B 5E1, Canada
| | - Mostafa Sayed
- Chemistry
Department, Faculty of Science, New Valley
University, El-Kharga 72511, Egypt
- Hefei
National Laboratory for Physical Sciences at the Microscale, Department
of Chemistry, University of Science and
Technology of China, Tai Hu Road, Hefei 230026, China
| | - Mahmoud M. Elshanawany
- Institute
of Physical and Theoretical Chemistry, Goethe
University, 60438 Frankfurt am Main, Germany
| | - Osama Younis
- Chemistry
Department, Faculty of Science, New Valley
University, El-Kharga 72511, Egypt
| | - Mostafa Ahmed
- Chemistry
Department, Faculty of Science, New Valley
University, El-Kharga 72511, Egypt
| | | | | | - Josef Wachtveitl
- Institute
of Physical and Theoretical Chemistry, Goethe
University, 60438 Frankfurt am Main, Germany
| | - Markus Braun
- Institute
of Physical and Theoretical Chemistry, Goethe
University, 60438 Frankfurt am Main, Germany
| | - Pedram Fatehi
- Chemical
Engineering Department, Lakehead University, 955 Oliver Road, Thunder Bay, Ontario P7B 5E1, Canada
| | - Mahmoud S. Tolba
- Chemistry
Department, Faculty of Science, New Valley
University, El-Kharga 72511, Egypt
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42
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Metal-free Knoevenagel condensation catalyzed by mesoporous and nitrogen-distribution-tunable supported carbon nitride. RESEARCH ON CHEMICAL INTERMEDIATES 2022. [DOI: 10.1007/s11164-022-04688-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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43
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Anh Tran V, Nhu Quynh LT, Thi Vo TT, Nguyen PA, Don TN, Vasseghian Y, Phan H, Lee SW. Experimental and computational investigation of a green Knoevenagel condensation catalyzed by zeolitic imidazolate framework-8. ENVIRONMENTAL RESEARCH 2022; 204:112364. [PMID: 34767819 DOI: 10.1016/j.envres.2021.112364] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2021] [Revised: 11/01/2021] [Accepted: 11/03/2021] [Indexed: 06/13/2023]
Abstract
ZIF-8 is a highly porous, stable, and abundant surface area material that can be used as an environmentally friendly catalyst for Knoevenagel condensations. The effects of the ratio of the reactants (benzaldehyde (BA):ethyl cyanoacetate (ECA)), reaction temperature, and catalyst concentration were systematically investigated using a ZIF-8 catalyst and water as the solvent. ZIF-8 (3-5 wt%) showed excellent catalytic performance with an almost complete conversion of BA in less than 6 h with a BA:ECA molar ratio of 1:2 at different temperatures. At 60 °C, the BA conversion rate and product selectivity of the reaction reached their highest values after 4 h with a BA:ECA molar ratio of 1:1. When employing 5.0 wt% ZIF-8, almost complete BA conversion was achieved after 3 h at room temperature. ZIF-8 also demonstrated good recyclability with almost no change in its catalytic activity over five cycles. The proposed reaction mechanism is based on the catalytic activity of the basic N sites on the surface of ZIF-8, and is supported by density functional theory calculations. The present approach provides a promising strategy for the construction of simple and environmentally friendly ZIF-8 catalysts.
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Affiliation(s)
- Vy Anh Tran
- Department of Chemical and Biochemical Engineering, Gachon University, 1342 Seongnamdaero, Sujeong-gu, Seongnam-si, 13120, Republic of Korea
| | - Le Thi Nhu Quynh
- Department of Chemistry, Biology and Environment, Pham Van Dong University, Quang Ngai City, 570000, Viet Nam
| | - Thu-Thao Thi Vo
- Department of Food Science and Biotechnology, Gachon University, 1342 Seongnamdaero, Sujeong-gu, Seongnam-si, 13120, Republic of Korea
| | - Phuc An Nguyen
- Fulbright University Vietnam, 105 Ton Dat Tien, District 7, Ho Chi Minh City, 72908, Viet Nam
| | - Ta Ngoc Don
- Ministry of Education and Training, Ha Noi City, 570000, Viet Nam
| | - Yasser Vasseghian
- Department of Chemical Engineering, Quchan University of Technology, Quchan, Iran.
| | - Hung Phan
- Fulbright University Vietnam, 105 Ton Dat Tien, District 7, Ho Chi Minh City, 72908, Viet Nam.
| | - Sang-Wha Lee
- Department of Chemical and Biochemical Engineering, Gachon University, 1342 Seongnamdaero, Sujeong-gu, Seongnam-si, 13120, Republic of Korea.
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Muráth S, Varga T, Kukovecz Á, Kónya Z, Sipos P, Pálinkó I, Varga G. Morphological aspects determine the catalytic activity of porous hydrocalumites: the role of the sacrificial templates. MATERIALS TODAY CHEMISTRY 2022. [DOI: 10.1016/j.mtchem.2021.100682] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Qiao J, Zhang B, Yu X, Zou X, Liu X, Zhang L, Liu Y. A Stable Y(III)-Based Amide-Functionalized Metal-Organic Framework for Propane/Methane Separation and Knoevenagel Condensation. Inorg Chem 2022; 61:3708-3715. [PMID: 35167753 DOI: 10.1021/acs.inorgchem.1c03924] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Here, a Y(III)-based metal-organic framework, JLU-MOF112 {[Y3(μ3-O)2(μ3-OH)(H2O)2(BTCTBA)2]·2[(CH3)2NH2]·5DMF·C6H5Cl·4H2O}, has been successfully synthesized under solvothermal conditions. JLU-MOF112 was constructed with amide-functionalized tricarboxylate ligands and Y(III)-based infinite chains, where the Y3 repeating units are arranged in a trans order. The overall framework could be viewed as a novel (3,5)-connected net with two types of channels along the [100] and [010] directions. JLU-MOF112 possesses a large BET surface area (1553 m2 g-1), a permanent pore volume (0.67 cm3 g-1), and outstanding thermal and chemical stability, which give JLU-MOF112 potential for the purification of natural gas, especially the equimolar separation of C3H8/CH4 with a high selectivity of 176. In addition, benefiting from the amide functional groups as Brønsted basic sites and the exposure of open metal sites as Lewis acid sites after activation, JLU-MOF112 can serve as a high-efficiency heterogeneous catalyst for Knoevenagel condensation by the reactions of malononitrile with benzaldehyde (yield of 98%, turnover number of 392, and turnover frequency of 3.27 min-1) and diverse aldehyde compounds. A rational mechanism was put forward that the Knoevenagel condensation was catalyzed by the synergistic effect of the Lewis acid sites and Brønsted basic sites, engendering the polarization of the carbonyl groups and the deprotonation of the methylene groups for nucleophilic attack.
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Affiliation(s)
- Junyi Qiao
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Borong Zhang
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Xueyue Yu
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Xiaoqin Zou
- Key Laboratory of Polyoxometalate Science of Ministry of Education, Northeast Normal University, Changchun 130024, P. R. China
| | - Xinyao Liu
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, P. R. China.,Sinochem Holdings Corporation Ltd., Beijing 100031, P. R. China
| | - Lirong Zhang
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Yunling Liu
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, P. R. China
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Shi Y, Zhou T, Di JQ, Wang W, Ma L, Zhang H, Gao Y. Three Si-substituted polyoxovanadates as efficient catalysts for Knoevenagel condensation and selective oxidation of styrene to benzaldehyde. Dalton Trans 2022; 51:3304-3313. [PMID: 35133359 DOI: 10.1039/d1dt03862a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Three new Si-substituted polyoxovanadates (POVs), [Cd2(dien)2][Cd(dien)][Cd(Hdien)2][V15Si6O46(OH)2(H2O)]·7H2O (1), [Co(enMe)2]3[Co2(enMe)2(H2O)2][V16Si4O44(OH)2(H2O)]·6H2O (2), and [Co(teta)]4[V16Si4O42(OH)4(H2O)]·10H2O (3) (dien = diethylenetriamine; enMe = 1,2-diaminopropane; teta = triethylenetetramine) were synthesized by the hydrothermal method and characterized. Structural analysis sheds light on the fact that the {V15Si6O48}/{V16Si4O46} clusters of compounds 1-3 were formed by replacing {VO5} square pyramids in the classical {V18O42} cluster with {Si2O7} units. Compound 1 is a 2D bilayer structure formed by the [V15Si6O46(OH)2(H2O)]10- cluster and two types of bridging Cd complexes containing binuclear groups [Cd2(dien)2]4+. Compound 2 is a 3D framework constructed from the [V16Si4O44(OH)2(H2O)]10- cluster and two types of Co complex fragments including binuclear [Co2(enMe)2(H2O)2]4+. In compound 3, the [V16Si4O42(OH)4(H2O)]8- cluster is connected with bridging [Co(teta)]2+ to expand into a 2D network. Compounds 1 and 3 represent the first 2D assemblies based on a vanadosilicate cluster. 1-3 served as heterogeneous catalysts and exhibited highly efficient catalytic activities for the Knoevenagel condensation under mild ambient conditions with low catalyst loading, featuring the open Lewis base {V15Si6O48}/{V16Si4O46} sites and Lewis acid Cd2+/Co2+ sites. The conversion of benzaldehyde was up to 99.3% in 80 min at room temperature using 1 as a heterogeneous catalyst with only 0.37% catalyst loading. Moreover, compounds 1-3 as catalysts for selective oxidation of styrene to benzaldehyde exhibited excellent catalytic performance, high selectivity and could be readily recycled. Most strikingly, compound 1 showed excellent catalytic performance with 97.6% conversion of styrene and 100% selectivity of benzaldehyde in 15 min. In addition, the catalytic activity of catalyst 1 was well maintained after five cycling reactions.
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Affiliation(s)
- Yu Shi
- Hebei Key Laboratory of Inorganic Nano-materials, National Experimental Chemistry Teaching Center, College of Chemistry and Material Science, Hebei Normal University, Shijiazhuang, 050024, P. R. China.
| | - Tong Zhou
- Hebei Key Laboratory of Inorganic Nano-materials, National Experimental Chemistry Teaching Center, College of Chemistry and Material Science, Hebei Normal University, Shijiazhuang, 050024, P. R. China.
| | - Jia-Qi Di
- Hebei Key Laboratory of Inorganic Nano-materials, National Experimental Chemistry Teaching Center, College of Chemistry and Material Science, Hebei Normal University, Shijiazhuang, 050024, P. R. China.
| | - Wenhui Wang
- Hebei Key Laboratory of Inorganic Nano-materials, National Experimental Chemistry Teaching Center, College of Chemistry and Material Science, Hebei Normal University, Shijiazhuang, 050024, P. R. China.
| | - Li Ma
- Hebei Key Laboratory of Inorganic Nano-materials, National Experimental Chemistry Teaching Center, College of Chemistry and Material Science, Hebei Normal University, Shijiazhuang, 050024, P. R. China.
| | - Heng Zhang
- Hebei Key Laboratory of Inorganic Nano-materials, National Experimental Chemistry Teaching Center, College of Chemistry and Material Science, Hebei Normal University, Shijiazhuang, 050024, P. R. China.
| | - Yuanzhe Gao
- Hebei Key Laboratory of Inorganic Nano-materials, National Experimental Chemistry Teaching Center, College of Chemistry and Material Science, Hebei Normal University, Shijiazhuang, 050024, P. R. China.
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Barrios-Bermúdez N, Cerpa-Naranjo A, Rojas-Cervantes ML. Amino-Functionalized Multiwall Carbon Nanotubes as Efficient Basic Catalysts for the Formation of γ-Lactams: Synthesis of N-1-Heptenyl-2-Pyrrolidinone. NANOMATERIALS 2022; 12:nano12040684. [PMID: 35215011 PMCID: PMC8877134 DOI: 10.3390/nano12040684] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Revised: 02/10/2022] [Accepted: 02/14/2022] [Indexed: 02/04/2023]
Abstract
In this work, we prepared a series of N-functionalized carbon nanotubes by means of a process of acylation-amidation of commercial multiwall carbon nanotubes that were previously pre-oxidized with nitric acid. Three different amines, butylamine, N,N-dimethyl ethylenediamine, and ethylenediamine, were used in the process. The characterization of samples by several techniques probed the incorporation of nitrogen atoms to the carbon nanotubes, especially in the case of ethylenediamine. The solids were tested as catalysts in the synthesis of N-1-heptenyl-2-pyrrolidinone, included in the group of a γ-lactams, compounds that show important biological properties. The most active catalyst was that prepared with butylamine, which exhibited the highest SBET and Vpore values and contained an amount of nitrogen that was intermediate between that of the other two catalysts. A yield of 60% to N-1-heptenyl-2-pyrrolidinone was achieved after 3 h at 120 °C under free-solvent conditions. This catalyst could be used in four consecutive cycles without significant activity loss.
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Affiliation(s)
- Niurka Barrios-Bermúdez
- Departamento de Química Inorgánica y Química Técnica, Facultad de Ciencias, UNED, Urbanización Monterrozas, Las Rozas, 28232 Madrid, Spain;
- Departamento de Ciencias, Escuela de Ingeniería, Arquitectura y Diseño, Universidad Europea de Madrid, c/ Tajo s/n, Villaviciosa de Odón, 28670 Madrid, Spain
| | - Arisbel Cerpa-Naranjo
- Departamento de Ingeniería Industrial y Aeroespacial, Escuela de Ingeniería, Arquitectura y Diseño, Universidad Europea de Madrid, c/ Tajo s/n, Villaviciosa de Odón, 28670 Madrid, Spain;
| | - María Luisa Rojas-Cervantes
- Departamento de Química Inorgánica y Química Técnica, Facultad de Ciencias, UNED, Urbanización Monterrozas, Las Rozas, 28232 Madrid, Spain;
- Correspondence:
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Gentile G, Rosso C, Criado A, Gombac V, Filippini G, Melchionna M, Fornasiero P, Prato M. New insights into the exploitation of oxidized carbon nitrides as heterogeneous base catalysts. Inorganica Chim Acta 2022. [DOI: 10.1016/j.ica.2021.120732] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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Padmaja P, Reddy S, Ugale VG, Reddy PN. Arylidenemalononitriles as Versatile Synthons in Heterocyclic Synthesis. Curr Org Synth 2022; 19:591-615. [PMID: 35023458 DOI: 10.2174/1385272826666220113100746] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2021] [Revised: 12/03/2021] [Accepted: 12/20/2021] [Indexed: 11/22/2022]
Abstract
BACKGROUND Arylidenemalononitriles are valuable synthons for the construction of a variety of novel complex heterocyclic motifs, fused heterocycle derivatives and spirocyclic compounds. They are versatile chemical intermediates and have increasing applications in industry, agriculture, medicine, biological science. OBJECTIVE The aim of this review is to highlight the preparation methods and reactions of arylidenemalononitriles in the synthesis of various heterocyclic compounds. CONCLUSION In this review, we have presented the application of arylidenemalononitriles to construct a variety of heterocycles. Various catalysts for the preparation of arylidnemalononitriles have been described.
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Affiliation(s)
- Pannala Padmaja
- Fluoro & Agrochemicals, CSIR-Indian Institute of Chemical Technology, Hyderabad, India
| | - Subba Reddy
- Fluoro & Agrochemicals, CSIR-Indian Institute of Chemical Technology, Hyderabad, India
| | - Vinod G Ugale
- Department of Pharmaceutical Chemistry, R. C. Patel Institute of Pharmaceutical Education and Research, Shirpur- 425405, Maharashtra, India
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Sawazaki T, Sohma Y, Kanai M. Knoevenagel Condensation between 2-Methyl-thiazolo[4,5-b]pyrazines and Aldehydes. Chem Pharm Bull (Tokyo) 2022; 70:82-84. [PMID: 34980738 DOI: 10.1248/cpb.c21-00780] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Knoevenagel condensation, an olefin-forming reaction from active methyl/methylene-containing compounds and aldehydes, is a fundamental and useful synthetic method. Benzothiazoles are, however, out of the scope of Knoevenagel condensation. Here, we report that Knoevenagel condensation between aldehydes and 2-methyl-thiazolo[4,5-b]pyrazines (MeTPy), a fused ring structure comprising pyrazine and thiazole, proceeded smoothly, despite minor structural differences from benzothiazoles. This finding will be useful for short synthesis of MeTPy-containing functional molecules, such as a tau probe analog 1.
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Affiliation(s)
- Taka Sawazaki
- Graduate School of Pharmaceutical Sciences, The University of Tokyo.,School of Pharmaceutical Sciences, Wakayama Medical University
| | - Youhei Sohma
- School of Pharmaceutical Sciences, Wakayama Medical University
| | - Motomu Kanai
- Graduate School of Pharmaceutical Sciences, The University of Tokyo
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