1
|
Melis N, Loche D, Thakkar SV, Cutrufello MG, Sini MF, Sedda G, Pilia L, Frongia A, Casula MF. Magnetic Aerogels for Room-Temperature Catalytic Production of Bis(indolyl)methane Derivatives. Molecules 2024; 29:2223. [PMID: 38792085 PMCID: PMC11124404 DOI: 10.3390/molecules29102223] [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: 03/31/2024] [Revised: 05/05/2024] [Accepted: 05/06/2024] [Indexed: 05/26/2024] Open
Abstract
The potential of aerogels as catalysts for the synthesis of a relevant class of bis-heterocyclic compounds such as bis(indolyl)methanes was investigated. In particular, the studied catalyst was a nanocomposite aerogel based on nanocrystalline nickel ferrite (NiFe2O4) dispersed on amorphous porous silica aerogel obtained by two-step sol-gel synthesis followed by gel drying under supercritical conditions and calcination treatments. It was found that the NiFe2O4/SiO2 aerogel is an active catalyst for the selected reaction, enabling high conversions at room temperature, and it proved to be active for three repeated runs. The catalytic activity can be ascribed to both the textural and acidic features of the silica matrix and of the nanocrystalline ferrite. In addition, ferrite nanocrystals provide functionality for magnetic recovery of the catalyst from the crude mixture, enabling time-effective separation from the reaction environment. Evidence of the retention of species involved in the reaction into the catalyst is also pointed out, likely due to the porosity of the aerogel together with the affinity of some species towards the silica matrix. Our work contributes to the study of aerogels as catalysts for organic reactions by demonstrating their potential as well as limitations for the room-temperature synthesis of bis(indolyl)methanes.
Collapse
Affiliation(s)
- Nicola Melis
- Department of Mechanical, Chemical and Materials Engineering, University of Cagliari, 09123 Cagliari, Italy
| | - Danilo Loche
- Nanostructures & Biotech Laboratory, Biological and Environmental Science and Engineering (BESE) Division, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia
| | - Swapneel V. Thakkar
- Department of Chemical and Geological Sciences, University of Cagliari, 09042 Monserrato, Italy
| | | | - Maria Franca Sini
- Department of Chemical and Geological Sciences, University of Cagliari, 09042 Monserrato, Italy
| | - Gianmarco Sedda
- Department of Chemical and Geological Sciences, University of Cagliari, 09042 Monserrato, Italy
| | - Luca Pilia
- Department of Mechanical, Chemical and Materials Engineering, University of Cagliari, 09123 Cagliari, Italy
| | - Angelo Frongia
- Department of Chemical and Geological Sciences, University of Cagliari, 09042 Monserrato, Italy
| | - Maria Francesca Casula
- Department of Mechanical, Chemical and Materials Engineering, University of Cagliari, 09123 Cagliari, Italy
| |
Collapse
|
2
|
Farrag M. In-situ preparation of sulfonated carbonaceous copper oxide-zirconia nanocomposite as a novel and recyclable solid acid catalyst for reduction of 4-nitrophenol. Sci Rep 2023; 13:10123. [PMID: 37349346 DOI: 10.1038/s41598-023-36627-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Accepted: 06/07/2023] [Indexed: 06/24/2023] Open
Abstract
The missing-linker defects of UiO-66 were exploited to covalently anchor Cu nanoclusters (Cu/UiO-66). The molecular interactions between the metals and oxides as copper-zirconia interfaces in Cu/UiO-66 are essential for heterogeneous catalysis, leading to remarkable synergistic impacts on activity and selectivity. Homogeneously distributed carbonaceous mixed metal oxides (CuO/ZrO2@C) nanocomposite was prepared via carbonization of the Cu/UiO-66 at 600 °C for 3 h in air. To enhance the acidity properties of the CuO/ZrO2@C nanocomposite, a small amount of sulfuric acid was added and heated at 150 °C under an N2 atmosphere (CuO/ZrO2-SO3H@C). The synthesised Cu/UiO-66 and CuO/ZrO2-SO3H@C catalysts were used as novel catalysts in the reduction of 4-nitrophenol (4-NP) to 4-aminophenol (4-AP). The Cu/UiO-66 and CuO/ZrO2-SO3H@C catalysts displayed complete conversion of the 4-NP solution during (4 and 2 min) stirring at room temperature, respectively. These two catalysts exhibited a high reduction rate of 8.61 × 10-3 s-1, and 18.3 × 10-3 s-1, respectively. The X-ray photoelectron spectroscopic (XPS) analysis showed the charge of copper atoms in the Cu/UiO-66 catalyst was Cu0/CuII and in the CuO/ZrO2-SO3H@C catalyst was CuI/CuII with nearly the same ratio (65/35). The particle size and the elemental composition of the CuO/ZrO2-SO3H@C catalyst were analysed by using high resolution transmission electron microscopy (HR-TEM), and energy-dispersive X-ray spectroscopy (EDS), and elemental mapping, respectively. The key point beyond the high catalytic activity and selectivity of the CuO/ZrO2-SO3H@C catalyst is both the carbon-metal oxides heterojunction structure that leads to good dispersion of the CuO and ZrO2 over the carbon sheets, and the high acidity properties that come from the combination between the Brønsted acid sites from sulfuric acid and Lewis acid sites from the UiO-66. The catalysts exhibited good recyclability efficiency without significant loss in activity, indicating their good potential for industrial applications.
Collapse
Affiliation(s)
- Mostafa Farrag
- Chemistry Department, Faculty of Science, Assiut University, Assiut, 71515, Egypt.
| |
Collapse
|
3
|
Kanagare AB, Yadav MR, Katariya AP, Bhagat DS, Dhas AK, Pansare DN, Nagwade PA, Kumar B, Sangshetti JN, Deshmukh SU. Insights into 4,4′‐Arylmethylene‐Bis‐1
H
‐Pyrazol‐5‐Ols Scaffolds: Various Synthetic Routes and Their Applications. ChemistrySelect 2023. [DOI: 10.1002/slct.202204088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Anant B. Kanagare
- Department of Chemistry Deogiri College Aurangabad. 431005 Maharashtra India
| | - M.Sc.Ashok R. Yadav
- Department of Chemistry Deogiri College Aurangabad. 431005 Maharashtra India
| | - Ashishkumar P. Katariya
- Department of Chemistry SAJVPM'S Smt. S. K. Gandhi Arts, Amolak Science & P. H. Gandhi Commerce College Kada, 414202 Beed Maharashtra India
| | - Devidas S. Bhagat
- Department of Forensic Chemistry and Toxicology Government Institute of Forensic Science Aurangabad 431004 Maharashtra India
| | - Ajit K. Dhas
- Department of Chemistry Deogiri College Aurangabad. 431005 Maharashtra India
| | | | - Pratik A. Nagwade
- Department of Chemistry Shri Anand College Pathardi 414102 Maharashtra India
| | - Brajesh Kumar
- Department of Chemistry TATA College, bypass road Chaibasa Jharkhand 833202 India
| | | | - Satish U. Deshmukh
- Department of Chemistry Deogiri College Aurangabad. 431005 Maharashtra India
| |
Collapse
|
4
|
Teli P, Sahiba N, Sethiya A, Soni J, Agarwal S. Advancement in synthetic strategies of bisdimedones: Two decades study. J Heterocycl Chem 2021. [DOI: 10.1002/jhet.4239] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Pankaj Teli
- Synthetic Organic Chemistry Laboratory, Department of Chemistry MLSU Udaipur India
| | - Nusrat Sahiba
- Synthetic Organic Chemistry Laboratory, Department of Chemistry MLSU Udaipur India
| | - Ayushi Sethiya
- Synthetic Organic Chemistry Laboratory, Department of Chemistry MLSU Udaipur India
| | - Jay Soni
- Synthetic Organic Chemistry Laboratory, Department of Chemistry MLSU Udaipur India
| | - Shikha Agarwal
- Synthetic Organic Chemistry Laboratory, Department of Chemistry MLSU Udaipur India
| |
Collapse
|
5
|
Kamalifar S, Kiyani H. Facile and Efficient Synthesis of 9-Aryl-1,8-Dioxo-Octahydroxanthenes Catalyzed by Sulfacetamide. Polycycl Aromat Compd 2021. [DOI: 10.1080/10406638.2021.1872656] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
| | - Hamzeh Kiyani
- School of Chemistry, Damghan University, Damghan, Iran
- Department of Chemistry, Faculty of Science, Shahrekord University, Shahrekord, Iran
| |
Collapse
|
6
|
Zare A, Monfared F, Sajadikhah SS. Synthesis and characterization of a novel organic–inorganic hybrid salt and its application as a highly effectual Brønsted–Lewis acidic catalyst for the production of
N
,
N
′‐alkylidene bisamides. Appl Organomet Chem 2021. [DOI: 10.1002/aoc.6046] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Abdolkarim Zare
- Department of Chemistry Payame Noor University PO Box 19395‐3697 Tehran Iran
| | - Fatemeh Monfared
- Department of Chemistry Payame Noor University PO Box 19395‐3697 Tehran Iran
| | | |
Collapse
|
7
|
Kumar P, Gupta P, Sharma C. Surface modified novel magnetically tuned halloysite functionalized sulfonic acid: synthesis, characterization and catalytic activity. Catal Sci Technol 2021. [DOI: 10.1039/d1cy00285f] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The present work demonstrates the synthesis of magnetically tuned halloysite solid acid, the physiochemical properties of which are thoroughly studied using different characterization techniques and has been successfully used for the synthesis of bisamides and 4H-pyrans.
Collapse
Affiliation(s)
- Pawan Kumar
- Department of Chemistry and Chemical Sciences
- Central University of Jammu
- Jammu-181143
- India
| | - Princy Gupta
- Department of Chemistry and Chemical Sciences
- Central University of Jammu
- Jammu-181143
- India
| | | |
Collapse
|
8
|
Zhu L, Li X, Deng Y, Zou R, Shao B, Yan L, Ruan C, Sun W. Construction and electrochemical behavior of hemoglobin sensor based on ZnO doped carbon nanofiber modified electrode. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2020. [DOI: 10.1007/s13738-020-02088-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
9
|
Aute D, Kshirsagar A, Uphade B, Gadhave A. An expedient and straightforward solvent‐free synthesis of 1,8‐dioxo‐octahydroxanthenes using eco‐friendly aluminized polyborate catalyst. J Heterocycl Chem 2020. [DOI: 10.1002/jhet.4090] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Dilip Aute
- Department of Chemistry and Research Centre Padmashri Vikhe Patil College (Affiliated to Savitribai Phule Pune University, Pune) Ahmednagar India
- Department of Chemistry Arts, Commerce & Science College Satral Ahmednagar India
| | - Akshay Kshirsagar
- Department of Chemistry and Research Centre Padmashri Vikhe Patil College (Affiliated to Savitribai Phule Pune University, Pune) Ahmednagar India
| | - Bhagwat Uphade
- Department of Chemistry and Research Centre Padmashri Vikhe Patil College (Affiliated to Savitribai Phule Pune University, Pune) Ahmednagar India
| | - Anil Gadhave
- Department of Chemistry and Research Centre Padmashri Vikhe Patil College (Affiliated to Savitribai Phule Pune University, Pune) Ahmednagar India
| |
Collapse
|
10
|
Yao W, Zhang Y, Zhu H, Ge C, Wang D. The synthesis and structure of pyridine-oxadiazole iridium complexes and catalytic applications: Non-coordinating-anion-tuned selective C N bond formation. CHINESE CHEM LETT 2020. [DOI: 10.1016/j.cclet.2019.08.049] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
|
11
|
Konwar LJ, Mäki-Arvela P, Mikkola JP. SO3H-Containing Functional Carbon Materials: Synthesis, Structure, and Acid Catalysis. Chem Rev 2019; 119:11576-11630. [DOI: 10.1021/acs.chemrev.9b00199] [Citation(s) in RCA: 100] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Lakhya Jyoti Konwar
- Technical Chemistry, Department of Chemistry, Chemical-Biological Centre, Umeå University, SE-901 87 Umeå, Sweden
| | - Päivi Mäki-Arvela
- Laboratory of Industrial Chemistry and Reaction Engineering, Johan Gadolin Process Chemistry Centre, Åbo Akademi University, Åbo-Turku FI-20500, Finland
| | - Jyri-Pekka Mikkola
- Technical Chemistry, Department of Chemistry, Chemical-Biological Centre, Umeå University, SE-901 87 Umeå, Sweden
- Laboratory of Industrial Chemistry and Reaction Engineering, Johan Gadolin Process Chemistry Centre, Åbo Akademi University, Åbo-Turku FI-20500, Finland
| |
Collapse
|
12
|
Singh R, Singh A, Bhardwaj D. Selective and Solvent‐Free Synthesis of Isoxazole‐Containing Spiro‐Thiazolidinones Using TiO
2
‐SO
3
H as Solid Catalyst. ChemistrySelect 2019. [DOI: 10.1002/slct.201901942] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Ruby Singh
- Department of ChemistrySchool of Basic SciencesJaipur National University, Jaipur, Rajasthan India
| | - Aakash Singh
- Department of ChemistrySchool of Basic SciencesJaipur National University, Jaipur, Rajasthan India
| | - Diksha Bhardwaj
- Department of ChemistrySchool of Basic SciencesJaipur National University, Jaipur, Rajasthan India
| |
Collapse
|
13
|
Kordrostami Z, Zare A, Karami M. N, N, N′, N′-Tetramethylethylene-diaminium- N, N′-disulfonic acid trifluoroacetate and pyridinium- N-sulfonic acid hydrogen sulfate as highly effective dual-functional catalysts for the preparation of N, N′-alkylidene bisamides. ZEITSCHRIFT FUR NATURFORSCHUNG SECTION B-A JOURNAL OF CHEMICAL SCIENCES 2019. [DOI: 10.1515/znb-2019-0064] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Abstract
In this research, Brønsted-acidic ionic liquids N,N,N′,N′-tetramethylethylene-diaminium-N,N′-disulfonic acid trifluoroacetate ([TMEDSA][TFA]2) and pyridinium-N-sulfonic acid hydrogen sulfate ([Py-SO3H][HSO4]) have been introduced as dual-functional catalysts for the green, simple and effective preparation of N,N′-alkylidene bisamides by the reaction of primary amides (2 eq.) with arylaldehydes (1 eq.) under solvent-free conditions. The reaction results and conditions of the catalysts have been compared with the previously reported ones. [TMEDSA][TFA]2 and [Py-SO3H][HSO4] were superior to the previously reported catalysts in terms of two or more of these factors: reaction times (10–45 min), yields (86–98%), temperature and the reaction conditions. Additionally, a plausible and attractive mechanism based on dual functionality of the catalysts has been proposed.
Collapse
Affiliation(s)
- Zahra Kordrostami
- Department of Chemistry , Payame Noor University , PO Box 19395-3697 , Tehran , I.R. Iran
| | - Abdolkarim Zare
- Department of Chemistry , Payame Noor University , PO Box 19395-3697 , Tehran , I.R. Iran , e-mail:
| | - Mostafa Karami
- Department of Chemistry , Payame Noor University , PO Box 19395-3697 , Tehran , I.R. Iran
| |
Collapse
|
14
|
Carbon-based nanocatalyst: An efficient and recyclable heterogeneous catalyst for one-pot synthesis of gem-bisamides, hexahydroacridine-1,8-diones and 1,8-dioxo-octahydroxanthenes. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2019. [DOI: 10.1007/s13738-019-01723-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
|
15
|
Nickel NPs @N-doped titania: an efficient and recyclable heterogeneous nanocatalytic system for one-pot synthesis of pyrano[2,3-d]pyrimidines and 1,8-dioxo-octahydroxanthenes. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2019. [DOI: 10.1007/s13738-019-01669-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
|
16
|
Zare A, Khanivar R, Irannejad‐Gheshlaghchaei N, Beyzavi MH. A Nanostructured Organic‐Inorganic Hybrid Material: Preparation, Characterization and Catalytic Performance for the Synthesis of
N
,
N
′‐Alkylidene Bisamides. ChemistrySelect 2019. [DOI: 10.1002/slct.201900220] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Abdolkarim Zare
- Department of ChemistryPayame Noor University PO Box 19395–3697 Tehran Iran
| | - Roghayyeh Khanivar
- Department of ChemistryPayame Noor University PO Box 19395–3697 Tehran Iran
| | | | - M. Hassan Beyzavi
- Department of Chemistry and BiochemistryUniversity of Arkansas, Fayetteville AR 72701 USA
| |
Collapse
|
17
|
A reusable magnetic nickel nanoparticle based catalyst for the aqueous synthesis of diverse heterocycles and their evaluation as potential anti-bacterial agent. Bioorg Med Chem 2018; 26:5018-5028. [DOI: 10.1016/j.bmc.2018.08.033] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2018] [Revised: 08/15/2018] [Accepted: 08/26/2018] [Indexed: 11/22/2022]
|
18
|
Probing the Catalytic Efficiency of Supported Heteropoly Acids for Esterification: Effect of Weak Catalyst Support Interactions. J CHEM-NY 2018. [DOI: 10.1155/2018/7037461] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Supported heteropoly acids are an interesting class of solid acid catalysts which possess flexible structure and super acidic properties essentially required for the oil-based biodiesel production. In this study, a series of catalysts containing 25 wt.% of heteropolytungstate (HPW) supported on various clays or SiO2 were prepared, and their catalytic efficiency was evaluated for esterification of acetic acid with heptanol. The as-prepared catalysts were characterized by various techniques including FT-IR spectroscopy, thermogravimetric analysis, X-ray diffraction, scanning electron microscopy, and BET. The catalytic efficiency of both bulk and supported HPW catalysts for the esterification activity strongly depends on the type of support and amount of catalyst; the bulk HPW catalyst and the catalyst supported by kaolinite with 25 wt.% of HPW exhibited highest activity. In order to study the effect of temperature on conversion, all the catalysts were subjected to different reaction temperatures. It was revealed that esterification activity of both bulk and supported HPW catalysts strongly depends upon the temperature variations of the reaction. Besides, the effect of leaching of active sites on the catalysts performance for biodiesel production was also evaluated by inductively coupled plasma studies (ICP). The kaolinite-supported catalyst (25% HPW/kaolinite) demonstrated higher amount of leaching which is also confirmed by the significant decrease in its catalytic activity when it is used for the second time. However, the higher activity demonstrated by HPW/kaolinite maybe because of some homogeneous reaction indicating a weak catalyst support interaction (WCSI) resulting in the leaching of the catalyst during the test. Furthermore, the effects of other reaction variables such as catalyst loading and reaction time on the conversion of acetic acid were also studied.
Collapse
|
19
|
Zaman AC. Polyol derived sulfonated solvothermal carbon for efficient dye removal from aqueous solutions. J Mol Liq 2018. [DOI: 10.1016/j.molliq.2017.11.117] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
20
|
Green and cost effective protocol for the synthesis of 1,8-dioxo-octahydroxanthenes and 1,8-dioxo-decahydroacridines by using sawdust sulphonic acid. RESEARCH ON CHEMICAL INTERMEDIATES 2017. [DOI: 10.1007/s11164-017-3059-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
21
|
Karhale S, Bhenki C, Rashinkar G, Helavi V. Covalently anchored sulfamic acid on cellulose as heterogeneous solid acid catalyst for the synthesis of structurally symmetrical and unsymmetrical 1,4-dihydropyridine derivatives. NEW J CHEM 2017. [DOI: 10.1039/c7nj00685c] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel heterogeneous solid acid catalyst has been prepared by covalent grafting of chlorosulphonic acid on amino-functionalized cellulose (Cell–Pr-NHSO3H).
Collapse
Affiliation(s)
- Shrikrishna Karhale
- Department of Chemistry
- Kolhapur 416004
- India
- Department of Chemistry
- A. M. A. & N. C. S. College
| | | | | | | |
Collapse
|
22
|
Kour G, Gupta M. A nano silver-xerogel (Ag nps@modified TEOS) as a newly developed nanocatalyst in the synthesis of benzopyranopyrimidines (with secondary and primary amines) and gem-bisamides. Dalton Trans 2017; 46:7039-7050. [DOI: 10.1039/c7dt00822h] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Silver nanoparticles have been prepared from a chemical reduction approach and supported on modified TEOS (tetraethylorthosilicate) xerogel to be studied as a nanocatalyst.
Collapse
Affiliation(s)
- Gurpreet Kour
- Department of Chemistry
- University of Jammu
- Jammu-180006
- India
| | - Monika Gupta
- Department of Chemistry
- University of Jammu
- Jammu-180006
- India
| |
Collapse
|
23
|
Banari H, Kiyani H, Pourali A. Efficient synthesis of bis(indolyl)methanes, bispyrazoles and biscoumarins using 4-sulfophthalic acid. RESEARCH ON CHEMICAL INTERMEDIATES 2016. [DOI: 10.1007/s11164-016-2720-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
24
|
Alaba PA, Sani YM, Ashri Wan Daud WM. Efficient biodiesel production via solid superacid catalysis: a critical review on recent breakthrough. RSC Adv 2016. [DOI: 10.1039/c6ra08399d] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Biodiesel produced from triglycerides and/or free fatty acids (FFAs) by transesterification and esterification has attracted immense attention during the past decades as a biodegradable, renewable and sustainable fuel.
Collapse
Affiliation(s)
- Peter Adeniyi Alaba
- Department of Chemical Engineering
- University of Malaya
- 50603 Kuala Lumpur
- Malaysia
| | | | | |
Collapse
|
25
|
Yang C, Su WQ, Xu DZ. Ionic liquid [Dabco-H][AcO] as a highly efficient and recyclable catalyst for the synthesis of various bisenol derivatives via domino Knoevenagel–Michael reaction in aqueous media. RSC Adv 2016. [DOI: 10.1039/c6ra23018k] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
An efficient, green and reusable catalystic system for the synthesis of various bisenol derivatives is presented.
Collapse
Affiliation(s)
- Cheng Yang
- National Pesticide Engineering Research Center (Tianjin)
- State Key Laboratory and Institute of Elemento-Organic Chemistry
- College of Chemistry
- Nankai University
- Tianjin 300071
| | - Wan-Qi Su
- National Pesticide Engineering Research Center (Tianjin)
- State Key Laboratory and Institute of Elemento-Organic Chemistry
- College of Chemistry
- Nankai University
- Tianjin 300071
| | - Da-Zhen Xu
- National Pesticide Engineering Research Center (Tianjin)
- State Key Laboratory and Institute of Elemento-Organic Chemistry
- College of Chemistry
- Nankai University
- Tianjin 300071
| |
Collapse
|