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Gao ML, Liu S, Liu L, Han ZB. Superhydrophobic MOF/polymer composite with hierarchical porosity for boosting catalytic performance in an humid environment. NANOSCALE 2024; 16:10637-10644. [PMID: 38738309 DOI: 10.1039/d4nr00948g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2024]
Abstract
The poor hydrostability of most reported metal-organic frameworks (MOFs) has become a daunting challenge in their practical applications. Recently, MOFs combined with multifunctional polymers can act as a functional platform and exhibit unique catalytic performance; they can not only inherit the outstanding properties of the two components but also offer unique synergistic effects. Herein, an original porous polymer-confined strategy has been developed to prepare a superhydrophobic MOF composite to significantly enhance its moisture or water resistance. The selective nucleation and growth of MOF nanocrystals confined in the pore of PDVB-vim are closely related to the structure-directing and coordination-modulating properties of PDVB-vim. The resultant MOF/PDVB-vim composite not only produces superior superhydrophobicity without significantly disturbing the original features but also exhibits a novel catalytic activity in the Friedel-Crafts alkylation reaction of indoles with trans-β-nitrostyrene because of the accessible sites and synergistic effects.
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Affiliation(s)
- Ming-Liang Gao
- College of Chemistry, Liaoning University, Shenyang 110036, P. R. China.
- Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Shuo Liu
- College of Chemistry, Liaoning University, Shenyang 110036, P. R. China.
| | - Lin Liu
- College of Chemistry, Liaoning University, Shenyang 110036, P. R. China.
| | - Zheng-Bo Han
- College of Chemistry, Liaoning University, Shenyang 110036, P. R. China.
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2
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Ryan MR, Lynch D, Collins SG, Maguire AR. Selective Thermal Deprotection of N-Boc Protected Amines in Continuous Flow. Org Process Res Dev 2024; 28:1946-1963. [PMID: 38783851 PMCID: PMC11110071 DOI: 10.1021/acs.oprd.3c00498] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Revised: 03/06/2024] [Accepted: 03/28/2024] [Indexed: 05/25/2024]
Abstract
Thermal N-Boc deprotection of a range of amines is readily effected in continuous flow, in the absence of an acid catalyst. While the optimum results were obtained in methanol or trifluoroethanol, deprotection can be effected in a range of solvents of different polarities. Sequential selective deprotection of N-Boc groups has been demonstrated through temperature control, as exemplified by effective removal of an aryl N-Boc group in the presence of an alkyl N-Boc group. As a proof of principle, a telescoped sequence involving selective deprotection of an aryl N-Boc group from 9h followed by benzoylation and deprotection of the remaining alkyl N-Boc group to form amide 13 proved successful.
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Affiliation(s)
- Michelle-Rose Ryan
- School
of Chemistry, Analytical and Biological Chemistry Research Facility, University College Cork, Cork T12 YN60, Ireland
| | - Denis Lynch
- School
of Chemistry, Analytical and Biological Chemistry Research Facility, University College Cork, Cork T12 YN60, Ireland
| | - Stuart G. Collins
- School
of Chemistry, Analytical and Biological Chemistry Research Facility,
SSPC, The SFI Research Centre for Pharmaceuticals, University College Cork, Cork T12 YN60, Ireland
| | - Anita R. Maguire
- School
of Chemistry and School of Pharmacy, Analytical and Biological Chemistry
Research Facility, SSPC, The SFI Research Centre for Pharmaceuticals, University College Cork, Cork T12 YN60, Ireland
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3
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Kamboj P, Mohapatra A, Mandal D, Tyagi V. Experimental and computational investigation of the α-amylase catalyzed Friedel-Crafts reaction of isatin to access symmetrical and unsymmetrical 3,3',3''-trisindoles. Org Biomol Chem 2024; 22:1839-1849. [PMID: 38345333 DOI: 10.1039/d3ob01928d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/29/2024]
Abstract
Trisindoles are of tremendous interest due to their wide range of biological activities. In this context, a number of methods have been reported in the past to synthesize 3,3',3''-trisindoles. However, most of the methods are only able to produce symmetrical 3,3',3''-trisindoles. Herein, we develop a sustainable and efficient approach to synthesize symmetrical as well as unsymmetrical 3,3',3''-trisindoles in a very selective manner using the α-amylase enzyme as a catalyst. Furthermore, various differently substituted isatin and indoles were used to prove the generality of the protocol and symmetrical or unsymmetrical 3,3',3''-trisindoles were obtained in 43-97% isolated yields. Next, a probable mechanism is proposed and investigated using molecular dynamics (MD) investigation to gain more insight into the role of residues available in the active site of the α-amylase enzyme. These studies revealed that Glu230, Lys209, and Asp206 in the active site of α-amylase play an important role in this catalysis. Moreover, the DFT studies suggested the formation of bisindole and alkylideneindolenine intermediates during the transformation. We synthesized four different biologically important 3,3',3''-trisindoles on a gram scale, which proved the robustness and scalability of this protocol.
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Affiliation(s)
- Priya Kamboj
- School of Chemistry and Biochemistry, Thapar Institute of Engineering and Technology (TIET), Patiala-147004, Punjab, India.
| | - Abinash Mohapatra
- School of Chemistry and Biochemistry, Thapar Institute of Engineering and Technology (TIET), Patiala-147004, Punjab, India.
| | - Debasish Mandal
- School of Chemistry and Biochemistry, Thapar Institute of Engineering and Technology (TIET), Patiala-147004, Punjab, India.
| | - Vikas Tyagi
- School of Chemistry and Biochemistry, Thapar Institute of Engineering and Technology (TIET), Patiala-147004, Punjab, India.
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4
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Lakshman C, Hari Prakash S, Mohana Roopan S. Materials based on molybdenum disulfide as a catalyst in organic transformations: An overview. SYNTHETIC COMMUN 2022. [DOI: 10.1080/00397911.2022.2048859] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Chetan Lakshman
- Department of Chemistry, Chemistry of Heterocycles and Natural Product Research Laboratory, School of Advanced Sciences, Vellore Institute of Technology, Vellore, Tamilnadu, India
| | - Sankar Hari Prakash
- Department of Chemistry, Chemistry of Heterocycles and Natural Product Research Laboratory, School of Advanced Sciences, Vellore Institute of Technology, Vellore, Tamilnadu, India
| | - Selvaraj Mohana Roopan
- Department of Chemistry, Chemistry of Heterocycles and Natural Product Research Laboratory, School of Advanced Sciences, Vellore Institute of Technology, Vellore, Tamilnadu, India
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5
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Tandem oxidative amidation of benzylic alcohols by copper(II) supported on metformin-graphitic carbon nitride nanosheets as an efficient catalyst. Sci Rep 2022; 12:4221. [PMID: 35273221 PMCID: PMC8908756 DOI: 10.1038/s41598-022-07543-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2021] [Accepted: 02/21/2022] [Indexed: 12/25/2022] Open
Abstract
In this research, an efficient heterogeneous catalyst based on graphitic carbon nitride nanosheets (CN) has been reported. The CN was functionalized by 1,3-dibromopropane as a linker (CN–Pr–Br) and subsequently modified with metformin (CN–Pr–Met). Furthermore, the copper(II) was coordinated on modified CN (CN–Pr–Met–Cu(II)) and during this process, 7.94% copper(II) was loaded into the catalyst structure. The synthesized catalyst was evaluated by various techniques including fourier-transform infrared spectroscopy (FT-IR), energy dispersive X-ray spectroscopy (EDS), field emission scanning electron microscopy (FE-SEM), thermogravimetric analysis (TGA), X-ray diffraction (XRD), and inductively coupled plasma atomic emission spectroscopy (ICP-OES). CN–Pr–Met–Cu(II) was used as a catalyst in the synthesis of amides via the oxidation of benzyl alcohols. The conditions of this reaction were optimized in terms of temperature, time, amount of catalyst, type of base, oxidant, and solvent. Moreover, a variety of amides with an efficiency of 75–95% were synthesized. The reaction was carried out in the presence of benzyl alcohols, amine hydrochloride salts, tert-butyl hydroperoxide (TBHP), CaCO3, and CN–Pr–Met–Cu(II) at 80 °C of acetonitrile solvent. The synthesized catalyst can be easily separated from the reaction medium and reused for 7 consecutive runs without a significant reduction in reaction efficiency.
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6
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Nanoarchitectonics of phosphomolybdic acid supported on activated charcoal for selective conversion of furfuryl alcohol and levulinic acid to alkyl levulinates. MOLECULAR CATALYSIS 2022. [DOI: 10.1016/j.mcat.2022.112135] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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7
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Dong Y, Qian JH, Chen XL, Jiang H, Li X, Zhou Q, Mei T, Shi ZC, Li ZH, He B. Metal-free synthesis of C2-quaternary indolinones by (NH 4) 2S 2O 8 mediated oxidative dearomatization of indoles. RSC Adv 2022; 12:21022-21025. [PMID: 35919833 PMCID: PMC9301541 DOI: 10.1039/d2ra04191j] [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: 07/07/2022] [Accepted: 07/15/2022] [Indexed: 11/22/2022] Open
Abstract
An efficient metal-free, (NH4)2S2O8 mediated oxidative dearomatization of indoles for the construction of C2-quaternary indolinones was disclosed. A series of C2-quaternary indolinones derivatives with good functional group tolerance were obtained in moderate to excellent yields. This methodology provides an alternative approach for the direct generation of all-carbon quaternary centers at the C2 position of indoles. This catalytic approach represents a step-economic and convenient strategy for the oxidative dearomatization of indoles. An efficient metal-free, (NH4)2S2O8 mediated oxidative dearomatization of indoles for construction of C2-quaternary indolinones was disclosed which provides an approach for generation of all-carbon quaternary centers at the C2 position of indoles.![]()
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Affiliation(s)
- Yu Dong
- College of Chemistry and Life Science, Sichuan Provincial Key Laboratory for Structural Optimization and Application of Functional Molecules, Chengdu Normal University, Chengdu, 611130, P. R. China
| | - Jun-Hu Qian
- College of Chemistry and Life Science, Sichuan Provincial Key Laboratory for Structural Optimization and Application of Functional Molecules, Chengdu Normal University, Chengdu, 611130, P. R. China
| | - Xiang-Long Chen
- College of Chemistry and Life Science, Sichuan Provincial Key Laboratory for Structural Optimization and Application of Functional Molecules, Chengdu Normal University, Chengdu, 611130, P. R. China
| | - Hui Jiang
- College of Chemistry and Life Science, Sichuan Provincial Key Laboratory for Structural Optimization and Application of Functional Molecules, Chengdu Normal University, Chengdu, 611130, P. R. China
| | - Xue Li
- College of Chemistry and Life Science, Sichuan Provincial Key Laboratory for Structural Optimization and Application of Functional Molecules, Chengdu Normal University, Chengdu, 611130, P. R. China
| | - Qiang Zhou
- College of Chemistry and Life Science, Sichuan Provincial Key Laboratory for Structural Optimization and Application of Functional Molecules, Chengdu Normal University, Chengdu, 611130, P. R. China
| | - Ting Mei
- College of Chemistry and Life Science, Sichuan Provincial Key Laboratory for Structural Optimization and Application of Functional Molecules, Chengdu Normal University, Chengdu, 611130, P. R. China
| | - Zhi-Chuan Shi
- Southwest Minzu University, Chengdu 610041, P. R. China
| | - Zhong-Hui Li
- College of Chemistry and Life Science, Sichuan Provincial Key Laboratory for Structural Optimization and Application of Functional Molecules, Chengdu Normal University, Chengdu, 611130, P. R. China
| | - Bing He
- College of Chemistry and Life Science, Sichuan Provincial Key Laboratory for Structural Optimization and Application of Functional Molecules, Chengdu Normal University, Chengdu, 611130, P. R. China
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8
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Khan J, Tyagi A, Yadav N, Mahato R, Hazra CK. Lambert Salt-Initiated Development of Friedel-Crafts Reaction on Isatin to Access Distinct Derivatives of Oxindoles. J Org Chem 2021; 86:17833-17847. [PMID: 34874162 DOI: 10.1021/acs.joc.1c02058] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Herein, a mild metal-free and efficacious route for the synthesis of biologically important 3-aryl oxindole derivatives is described. Using Lambert salt-initiated hydroarylation of isatin, a diverse array of monoarylated products, symmetrical/unsymmetrical double-arylated products, and deoxygenated hydroarylated products could be synthesized from the single starting substrate in good to excellent yields. A preliminary mechanistic study revealed that the reaction proceeds via a monoarylated product followed by a nucleophilic attack by another electron-rich arene nucleophile under mild conditions. The potential of newly synthesized symmetric/unsymmetric 3,3-disubstituted oxindole, 3-substituted 3-hydroxy oxindoles, 3,3-di(indolyl)indolin-2-ones, and α-aryl oxindoles as valuable building blocks is further illustrated.
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Affiliation(s)
- Jabir Khan
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Aparna Tyagi
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Naveen Yadav
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Rina Mahato
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Chinmoy K Hazra
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
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9
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Wati FA, Santoso M, Moussa Z, Fatmawati S, Fadlan A, Judeh ZMA. Chemistry of trisindolines: natural occurrence, synthesis and bioactivity. RSC Adv 2021; 11:25381-25421. [PMID: 35478918 PMCID: PMC9037102 DOI: 10.1039/d1ra03091d] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Accepted: 07/11/2021] [Indexed: 01/18/2023] Open
Abstract
Heterocyclic nitrogen compounds are privileged structures with many applications in the pharmaceutical and nutraceutical industries since they possess wide bioactivities. Trisindolines are heterocyclic nitrogen compounds consisting of an isatin core bearing two indole moieties. Trisindolines have been synthesized by reacting isatins with indoles using various routes and the yield greatly depends on the catalyst used, reaction conditions, and the substituents on both the isatin and indole moieties. Amongst the synthetic routes, acid-catalyzed condensation reaction between isatins and indoles are the most useful due to high yield, wide scope and short reaction times. Trisindolines are biologically active compounds and show anticancer, antimicrobial, antitubercular, antifungal, anticonvulsant, spermicidal, and antioxidant activities, among others. Trisindolines have not previously been reviewed. Therefore, this review aims to provide a comprehensive account of trisindolines including their natural occurrence, routes of synthesis, and biological activities. It aims to inspire the discovery of lead trisindoline drug candidates for further development. This in-depth review of trisindolines covers their natural occurrence in addition to several routes of synthesis and catalysts used. The biological activities of trisindolines have been discussed with a special emphasis on the structure–activity relationship.![]()
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Affiliation(s)
- First Ambar Wati
- Department of Chemistry, Institut Teknologi Sepuluh Nopember Kampus ITS, Sukolilo Surabaya 60111 Indonesia
| | - Mardi Santoso
- Department of Chemistry, Institut Teknologi Sepuluh Nopember Kampus ITS, Sukolilo Surabaya 60111 Indonesia
| | - Ziad Moussa
- Department of Chemistry, College of Science, United Arab Emirates University P. O. Box 15551 Al Ain United Arab Emirates
| | - Sri Fatmawati
- Department of Chemistry, Institut Teknologi Sepuluh Nopember Kampus ITS, Sukolilo Surabaya 60111 Indonesia
| | - Arif Fadlan
- Department of Chemistry, Institut Teknologi Sepuluh Nopember Kampus ITS, Sukolilo Surabaya 60111 Indonesia
| | - Zaher M A Judeh
- School of Chemical and Biomedical Engineering, Nanyang Technological University 62 Nanyang Drive, N1.2-B1-14 Singapore 637459 Singapore
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10
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Aleksandrzak M, Baca M, Pacia M, Wenelska K, Zielinska B, Kalenczuk RJ, Mijowska E. 0D, 1D, 2D molybdenum disulfide functionalized by 2D polymeric carbon nitride for photocatalytic water splitting. NANOTECHNOLOGY 2021; 32:355703. [PMID: 34034236 DOI: 10.1088/1361-6528/ac04d3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Accepted: 05/25/2021] [Indexed: 06/12/2023]
Abstract
Photocatalytic activity of molybdenum disulfide structures with different dimensions (0D, 1D and 2D) functionalized with polymeric carbon nitride (PCN) is presented. MoS2nanotubes (1D), nanoflakes (2D) and quantum dots (0D, QDs) were used, respectively, as co-catalysts of PCN in photocatalytic water splitting reaction to evolve hydrogen. Although, 2D-PCN showed the highest light absorption in visible range and the most enhanced photocurrent response after irradiation with light from 460 to 727 nm, QDs-PCN showed the highest photocatalytic efficiency. The detailed analysis revealed that the superior photocatalytic activity of QDs-PCN in comparison with other structures of MoS2arose from (i) the most effective separation of photoexcited electron-hole pairs, (ii) the most enhanced up-converted photoluminescence (UCPL), (iii) the highest reactivity of electrons in conduction band. Moreover, a narrowed size of QDs affected shorter diffusion path of charge carriers to active reaction sites, higher number of the sites and higher interfacial area between molybdenum disulfide and PCN.
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Affiliation(s)
- Malgorzata Aleksandrzak
- Nanomaterials Physicochemistry Department, Faculty of Chemical Technology and Engineering, West Pomeranian University of Technology, Szczecin, Piastow Ave. 42, 71-065 Szczecin, Poland
| | - Martyna Baca
- Nanomaterials Physicochemistry Department, Faculty of Chemical Technology and Engineering, West Pomeranian University of Technology, Szczecin, Piastow Ave. 42, 71-065 Szczecin, Poland
| | - Michał Pacia
- Faculty of Chemistry, Jagiellonian University in Kraków, Gronostajowa 2, 30-387 Kraków, Poland
| | - Karolina Wenelska
- Nanomaterials Physicochemistry Department, Faculty of Chemical Technology and Engineering, West Pomeranian University of Technology, Szczecin, Piastow Ave. 42, 71-065 Szczecin, Poland
| | - Beata Zielinska
- Nanomaterials Physicochemistry Department, Faculty of Chemical Technology and Engineering, West Pomeranian University of Technology, Szczecin, Piastow Ave. 42, 71-065 Szczecin, Poland
| | - Ryszard J Kalenczuk
- Nanomaterials Physicochemistry Department, Faculty of Chemical Technology and Engineering, West Pomeranian University of Technology, Szczecin, Piastow Ave. 42, 71-065 Szczecin, Poland
| | - Ewa Mijowska
- Nanomaterials Physicochemistry Department, Faculty of Chemical Technology and Engineering, West Pomeranian University of Technology, Szczecin, Piastow Ave. 42, 71-065 Szczecin, Poland
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11
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Karkhah MK, Kefayati H, Shariati S. Synthesis of benzo[
h
]quinolone and benzo[
c
]acridinone derivatives by
Fe
3
O
4
@
PS‐Arginine
[
HSO
4
] as an efficient magnetic nanocatalyst. J Heterocycl Chem 2020. [DOI: 10.1002/jhet.4125] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
| | - Hassan Kefayati
- Department of Chemistry Rasht Branch, Islamic Azad University Rasht Iran
| | - Shahab Shariati
- Department of Chemistry Rasht Branch, Islamic Azad University Rasht Iran
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12
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13
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Bahuguna A, Sasson Y. Functionalized Graphitic Carbon Nitride Decorated with Palladium: an Efficient Heterogeneous Catalyst for Hydrogenation Reactions Using KHCO 2 as a Mild and Noncorrosive Source of Hydrogen. ACS OMEGA 2020; 5:12302-12312. [PMID: 32548413 PMCID: PMC7271368 DOI: 10.1021/acsomega.0c00996] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Accepted: 04/02/2020] [Indexed: 06/11/2023]
Abstract
Functionalization of the widely known graphitic carbon nitride (GCN) material has been performed, and a novel heterogeneous catalyst is reported by incorporating palladium over the surface of functionalized GCN. GCN was functionalized using an optimized ratio of sulfuric acid, nitric acid, and hydrogen peroxide. The developed catalyst was characterized by powder X-ray diffraction, IR, scanning tunneling microscopy, tunneling electron microscopy, X-ray photoelectron spectroscopy, Brunauer-Emmett-Teller, thermogravimetric analysis, and solid-state CP-NMR. The developed material containing ≤1% Pd exhibits superior catalytic activity in comparison to other carbon support materials (such as 5% Pd/C) for various hydrogenation reactions under mild conditions. Potassium formate has been chosen as the best hydrogen source among other alkali metal formates. The developed catalyst was also able to catalyze a one-pot three-step reaction for the synthesis of N-benzylaniline which is a precursor of various antihistamine and anticholargenic drugs. Moreover, the catalyst could be recycled multiple times and consistent activity was reported.
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14
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Paul D, Gautam S, Panchal P, Nehra SP, Choudhary P, Sharma A. ZnO-Modified g-C 3N 4: A Potential Photocatalyst for Environmental Application. ACS OMEGA 2020; 5:3828-3838. [PMID: 32149209 PMCID: PMC7057336 DOI: 10.1021/acsomega.9b02688] [Citation(s) in RCA: 67] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/20/2019] [Accepted: 02/06/2020] [Indexed: 05/04/2023]
Abstract
Solar energy-driven practices using semiconducting materials is an ideal approach toward wastewater remediation. In order to attain a superior photocatalyst, a composite of g-C3N4 and ZnO (GCN-ZnO) has been prepared by one-step thermal polymerization of urea and zinc carbonate basic dihydrate [ZnNO3]2·[Zn(OH)2]3. The GCN-ZnO0.4 sample showed an evolved morphology, increased surface area (116 m2 g-1), better visible light absorption ability, and reduced band gap in comparison to GCN-pure. The GCN-ZnO0.4 sample also showed enhanced adsorption and photocatalytic activity performance, resulting in an increased reaction rate value up to 3 times that of GCN-pure, which was attributed to the phenomenon of better separation of photogenerated charge carriers resulting because of heterojunction development among interfaces of GCN-pure and ZnO. In addition, the GCN-ZnO0.4 sample showed a decent stability for four cyclic runs and established its potential use for abatement of organic wastewater pollutants in comparison to GCN-pure.
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Affiliation(s)
- Devina
Rattan Paul
- Center
of Excellence for Energy and Environmental Studies, Deenbandhu
Chhotu Ram University of Science and Technology, Murthal 131039, India
| | - Shubham Gautam
- Materials
Research Center, Malaviya National Institute
of Technology, Jaipur 302017, India
| | - Priyanka Panchal
- Center
of Excellence for Energy and Environmental Studies, Deenbandhu
Chhotu Ram University of Science and Technology, Murthal 131039, India
| | - Satya Pal Nehra
- Center
of Excellence for Energy and Environmental Studies, Deenbandhu
Chhotu Ram University of Science and Technology, Murthal 131039, India
| | | | - Anshu Sharma
- Department
of Physics, School of Engineering & Technology (SoET), Central University of Haryana, Mahendragarh 123031, India
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15
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Wang SY, Shi XC, Laborda P. Indole-based melatonin analogues: Synthetic approaches and biological activity. Eur J Med Chem 2020; 185:111847. [DOI: 10.1016/j.ejmech.2019.111847] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2019] [Revised: 11/01/2019] [Accepted: 11/01/2019] [Indexed: 12/11/2022]
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16
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Bahuguna A, Kumar A, Krishnan V. Carbon‐Support‐Based Heterogeneous Nanocatalysts: Synthesis and Applications in Organic Reactions. ASIAN J ORG CHEM 2019. [DOI: 10.1002/ajoc.201900259] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Ashish Bahuguna
- School of Basic Sciences and Advanced Materials Research CenterIndian Institute of Technology Mandi, Kamand Himachal Pradesh 175005 India
| | - Ajay Kumar
- School of Basic Sciences and Advanced Materials Research CenterIndian Institute of Technology Mandi, Kamand Himachal Pradesh 175005 India
| | - Venkata Krishnan
- School of Basic Sciences and Advanced Materials Research CenterIndian Institute of Technology Mandi, Kamand Himachal Pradesh 175005 India
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17
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Feghhi A, Malakooti R, Malakooti S, Hooshmand N. Easy Scale‐Up Synthesis of Mo
8
O
26
(C
5
H
6
N)
4
.H
2
O Hybrid with a Rectangular Prism Morphology and Its Application as an Efficient and Highly Recyclable Bi‐functional Catalyst for Knoevenagel Condensations. ChemistrySelect 2019. [DOI: 10.1002/slct.201803124] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Aliyeh Feghhi
- Department of ChemistryCollege of SciencesUniversity of Birjand, Birjand Iran
| | - Reihaneh Malakooti
- Department of ChemistryCollege of SciencesUniversity of Birjand, Birjand Iran
| | - Sadeq Malakooti
- Department of Mechanical EngineeringThe University of Texas at Dallas Richardson TX 75080 USA
| | - Nasrin Hooshmand
- Laser Dynamics LaboratorySchool of Chemistry and BiochemistryGeorgia Institute of Technology, Atlanta Georgia 30332–0400 USA
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18
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Paul DR, Sharma R, Nehra SP, Sharma A. Effect of calcination temperature, pH and catalyst loading on photodegradation efficiency of urea derived graphitic carbon nitride towards methylene blue dye solution. RSC Adv 2019; 9:15381-15391. [PMID: 35514817 PMCID: PMC9064223 DOI: 10.1039/c9ra02201e] [Citation(s) in RCA: 57] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2019] [Accepted: 05/11/2019] [Indexed: 11/21/2022] Open
Abstract
The appropriate synthesis temperature and optimized photodegradation reaction conditions result in an appreciable enhancement of the photocatalytic activity of urea derived innate g-C3N4 towards MB dye degradation.
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Affiliation(s)
- Devina Rattan Paul
- Center of Excellence for Energy and Environmental Studies
- Deenbandhu Chhotu Ram University of Science and Technology
- India
| | - Rishabh Sharma
- Center of Excellence for Energy and Environmental Studies
- Deenbandhu Chhotu Ram University of Science and Technology
- India
| | - S. P. Nehra
- Center of Excellence for Energy and Environmental Studies
- Deenbandhu Chhotu Ram University of Science and Technology
- India
- Center for Polymers and Organic Solids
- Department of Chemistry and Biochemistry
| | - Anshu Sharma
- Department of Physics
- Indian Institute of Technology Delhi
- New Delhi 110016
- India
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Bahuguna A, Choudhary P, Chhabra T, Krishnan V. Ammonia-Doped Polyaniline-Graphitic Carbon Nitride Nanocomposite as a Heterogeneous Green Catalyst for Synthesis of Indole-Substituted 4 H-Chromenes. ACS OMEGA 2018; 3:12163-12178. [PMID: 31459291 PMCID: PMC6645668 DOI: 10.1021/acsomega.8b01687] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2018] [Accepted: 09/13/2018] [Indexed: 05/21/2023]
Abstract
A nanocomposite of polyaniline with graphitic carbon nitride (GCN) nanosheets has been synthesized by a facile oxidative polymerization of an aniline monomer and GCN to demonstrate its potential to catalyze the synthesis of various indole-substituted 4H-chromenes. The synthesized nanocomposite was thoroughly characterized using different spectroscopic techniques to confirm the morphology and composition. Subsequently, the fabricated nanocomposite was used as a heterogeneous catalyst to synthesize several bioactive indole-substituted 4H-chromenes in an aqueous medium. Organic transformation under benign and environmentally sustainable conditions is of paramount importance in the view of growing environmental pollution. Water is the universal Green solvent and has been a preferred choice of nature to perform various reactions. The catalyst developed in this work showed very good recyclability and adaptability for the synthesis of various medicinally significant indole-substituted 4H-chromenes. This multicomponent reaction imparts very high atom economy (94%) and low environmental factor (0.13).
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Affiliation(s)
- Ashish Bahuguna
- School of Basic Sciences
and Advanced Materials Research Center, Indian Institute of Technology Mandi, Kamand, Himachal Pradesh 175005, India
| | - Priyanka Choudhary
- School of Basic Sciences
and Advanced Materials Research Center, Indian Institute of Technology Mandi, Kamand, Himachal Pradesh 175005, India
| | - Tripti Chhabra
- School of Basic Sciences
and Advanced Materials Research Center, Indian Institute of Technology Mandi, Kamand, Himachal Pradesh 175005, India
| | - Venkata Krishnan
- School of Basic Sciences
and Advanced Materials Research Center, Indian Institute of Technology Mandi, Kamand, Himachal Pradesh 175005, India
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