1
|
Alharbi RA, Alminderej FM, Al-Harby NF, Elmehbad NY, Mohamed NA. Preparation and Characterization of a New Bis-Uracil Chitosan-Based Hydrogel as Efficient Adsorbent for Removal of Anionic Congo Red Dye. Polymers (Basel) 2023; 15:polym15061529. [PMID: 36987309 PMCID: PMC10056002 DOI: 10.3390/polym15061529] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Revised: 03/11/2023] [Accepted: 03/12/2023] [Indexed: 03/30/2023] Open
Abstract
A new hydrogel, based on chitosan crosslinked with 2-chlorophenyl-bis(6-amino-1,3-dimethyluracil-5-yl) methane, (2Clph-BU-Cs), has been successfully created. Various instrumental techniques such as elemental analysis, FTIR, SEM, and XRD were used to prove its structure. Its removal efficiency for anionic Congo red (CR) dye under different conditions for industrial wastewater treatment was studied. For optimizing the conditions to maximize CR dye removal, the impacts of temperature, contact time, pH, and initial concentration of the dye on adsorption capacity were investigated. The removal of the dye was pH-dependent, with a much higher value achieved at pH 4 than at pH 7 and 9. The maximum adsorption capacity of the hydrogel was 93.46 mg g-1. The model of adsorption process was fitted to the pseudo-second-order kinetic model. The intraparticle diffusion demonstrated the multi-step nature of the adsorption process. The thermodynamic results showed that the adsorption process was endothermic because of the positive value of enthalpy (43.70 kJ mol-1). The process of adsorption at high temperatures was spontaneous, according to the values of ∆G0. An increase in randomness was seen in the value of ∆S°. Generally, the investigated hydrogel has the potential to be used as a promising effective reusable adsorbent for industrial wastewater remediation.
Collapse
Affiliation(s)
- Rana A Alharbi
- Department of Chemistry, College of Science, Qassim University, Buraidah 51452, Saudi Arabia
| | - Fahad M Alminderej
- Department of Chemistry, College of Science, Qassim University, Buraidah 51452, Saudi Arabia
| | - Nouf F Al-Harby
- Department of Chemistry, College of Science, Qassim University, Buraidah 51452, Saudi Arabia
| | - Noura Y Elmehbad
- Department of Chemistry, Faculty of Science and Arts, Najran University, Najran 55461, Saudi Arabia
| | - Nadia A Mohamed
- Department of Chemistry, College of Science, Qassim University, Buraidah 51452, Saudi Arabia
- Department of Chemistry, Faculty of Science, Cairo University, Giza 12613, Egypt
| |
Collapse
|
2
|
Design, Synthesis, and Characterization of Novel Bis-Uracil Chitosan Hydrogels Modified with Zinc Oxide Nanoparticles for Boosting Their Antimicrobial Activity. Polymers (Basel) 2023; 15:polym15040980. [PMID: 36850260 PMCID: PMC9964190 DOI: 10.3390/polym15040980] [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: 01/11/2023] [Revised: 02/04/2023] [Accepted: 02/13/2023] [Indexed: 02/18/2023] Open
Abstract
A new series of hydrogels was successfully prepared by incorporating various substituted bisuracil (R-BU) linkages between chitosan Schiff's base chains (R-BU-CsSB) and between chitosan chains (R-BU-Cs). After protection of the amino groups of chitosan by benzaldehyde, yielding chitosan Schiff's base (CsSB), the reaction with epichlorohydrin was confined on the -OH on C6 to produce epoxy chitosan Schiff's base (ECsSB), which was reacted with R-BU to form R-BU-CsSB hydrogels, and finally, the bioactive amino groups of chitosan were restored to obtain R-BU-Cs hydrogels. Further, some R-BU-Cs-based ZnO nanoparticle (R-BU-Cs/ZnONPs) composites were also prepared. Appropriate techniques such as elemental analysis, FTIR, XRD, SEM, and EDX were used to verify their structures. Their inhibition potency against all the tested microbes were arranged as: ZnONPs bio-composites > R-BU-Cs hydrogels > R-BU-CsSB hydrogels > Cs. Their inhibition performance against Gram-positive bacteria was better than Gram-negative ones. Their minimum inhibitory concentration (MIC) values decreased as a function of the negative resonance effect of the substituents in the aryl ring of R-BU linkages in the hydrogels. Compared with Vancomycin, the ZnONPs bio-composites showed superior inhibitory effects against most of the tested Gram-negative bacteria, all inspected Gram-positive ones, and all investigated fungi.
Collapse
|
3
|
Hussain Z, A. Ibrahim M, M. El-Gohary N, A. Gabr Y, A. Allimony H, Badran AS. Utility of 6-Aminouracils for Building Substituted and Heteroannulated Pyrimidines: A Comprehensive Review. HETEROCYCLES 2023. [DOI: 10.3987/rev-23-1002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 04/03/2023]
|
4
|
Verma M, Thakur A, Sharma R, Bharti R. Recent Advancement in the One-Pot Synthesis of the Tri-Substituted Methanes (TRSMs) and Their Biological Applications. Curr Org Synth 2021; 19:86-114. [PMID: 34515005 DOI: 10.2174/1570179418666210910105342] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Revised: 07/08/2021] [Accepted: 07/19/2021] [Indexed: 11/22/2022]
Abstract
The history of tri-substituted methanes (TRSMs) in chemical industries is much older. Tri-substituted methanes were previously used as dyes in the chemical industries. Still, there is a significant surge in researchers' interest in them due to their wide range of bioactivities. Tri-substituted methane derivatives show a wide range of biological activities like anti-tumor, antimicrobial, antibiofilm, antioxidant, anti-inflammatory, anti-arthritic activities. Due to the wide range of medicinal applications shown by tri-substituted methanes, most of the methodologies reported in the literature for the synthesis of TRSMs are focused on the one-pot method. This review explored the recently reported one-pot processes for synthesizing tri-substituted methanes and their various medicinal applications. Based on the substitution attached to the -CH carbon, this review categorizes them into two major classes: (I) symmetrical and (II) unsymmetrical trisubstituted methanes. In addition, this review gives an insight into the growing opportunities for the construction of trisubstituted scaffolds via one-pot methodologies. To the best of our knowledge, no one has yet reported a review on the one-pot synthesis of TRSMs. Therefore, here we present a brief literature review of the synthesis of both symmetrical and unsymmetrical TRSMs covering various one-pot methodologies along with their medicinal applications.
Collapse
Affiliation(s)
- Monika Verma
- Department of chemistry, University Institute of sciences, Chandigarh University, Ludhiana Highway, Mohali, Punjab . India
| | - Ajay Thakur
- Department of chemistry, University Institute of sciences, Chandigarh University, Ludhiana Highway, Mohali, Punjab . India
| | - Renu Sharma
- Department of chemistry, University Institute of sciences, Chandigarh University, Ludhiana Highway, Mohali, Punjab . India
| | - Ruchi Bharti
- Department of chemistry, University Institute of sciences, Chandigarh University, Ludhiana Highway, Mohali, Punjab . India
| |
Collapse
|
5
|
Ziarani GM, Rad M, Mohajer F, Sehrawat H, Tomar R. Synthesis of Heterocyclic Compounds through Multicomponent Reactions Using 6-Aminouracil as Starting Reagent. CURR ORG CHEM 2021. [DOI: 10.2174/1385272825666210303112858] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The analogs of 6-Amino uracil are essential components due to their biological
activities. The uracil is used as an important component for the synthesis of heterocyclic compounds
like pyrrolo-, pyrido-, pyrimidine-pyrimido scaffolds. Herein, the application of this
compound is reviewed as a precursor in the synthesis of many heterocyclic cores from 2016 to
2020.
Collapse
Affiliation(s)
| | - Marzieh Rad
- Department of Chemistry, Faculty of Physics and Chemistry, University of Alzahra, Tehran,Iran
| | - Fatemeh Mohajer
- Department of Chemistry, Faculty of Physics and Chemistry, University of Alzahra, Tehran,Iran
| | - Hitesh Sehrawat
- Department of Chemistry, University of Delhi, Delhi-110007,India
| | - Ravi Tomar
- Department of Chemistry, Faculty of Science, SGT University, Gurugram, Haryana-122505,India
| |
Collapse
|
6
|
Baruah B, Deb ML. Catalyst-free and additive-free reactions enabling C-C bond formation: a journey towards a sustainable future. Org Biomol Chem 2021; 19:1191-1229. [PMID: 33480947 DOI: 10.1039/d0ob02149k] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
This review focuses on the catalyst- and additive-free C-C bond forming reactions reported mostly from the year 2005 to date. C-C bond forming reactions are highly important as large and complex organic molecules can be derived from simpler ones via these reactions. On the other hand, catalyst- and additive-free reactions are economical, environmentally friendly and less sensitive to air/moisture, allow easy separation of products and are operationally simple. Hence, a large number of research articles have been published in this area. Though a few reviews are available on the catalyst-free organic reactions, most of them were published a few years ago. The current review excludes catalysts as well as additives and is specific to only C-C bond formation. Besides many organic name reactions, catalyst/additive-free C-H functionalizations, coupling reactions and UV-visible-light-promoted reactions are also discussed. Undoubtedly, the contents of this review will motivate readers to do more novel work in this area which will accelerate the journey towards a sustainable future.
Collapse
Affiliation(s)
- Biswajita Baruah
- Department of Chemistry, Pandu College, Guwahati-12, Assam, India
| | | |
Collapse
|
7
|
Mohan B, Choudhary M, Kumar G, Muhammad S, Das N, Singh K, Al-Sehemi AG, Kumar S. An experimental and computational study of pyrimidine based bis-uracil derivatives as efficient candidates for optical, nonlinear optical, and drug discovery applications. SYNTHETIC COMMUN 2020. [DOI: 10.1080/00397911.2020.1771369] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Bharti Mohan
- Department of Chemistry, National Institute of Technology Patna, Patna, India
| | - Mukesh Choudhary
- Department of Chemistry, National Institute of Technology Patna, Patna, India
| | - Gaurav Kumar
- School of Biomedical Engineering, Indian Institute of Technology (Banaras Hindu University), Varanasi, India
- Department of Clinical Research, School of Biosciences and Biomedical Engineering, Galgotias University, Greater Noida, India
| | - Shabbir Muhammad
- Research Center for Advanced Materials Science, King Khalid University, Abha, Saudi Arabia
| | - Neeladri Das
- Department of Chemistry, Indian Institute of Technology Patna, Patna, India
| | - Khushwant Singh
- Department of Chemistry, Indian Institute of Technology Patna, Patna, India
| | - Abdullah G. Al-Sehemi
- Department of Chemistry, College of Science, King Khalid University, Abha, Saudi Arabia
| | - Santosh Kumar
- Division of Chemical Engineering, Konkuk University, Seoul, South Korea
| |
Collapse
|
8
|
Zare A, Ghobadpoor A, Safdari T. Preparation, characterization and utilization of a novel dicationic molten salt as catalyst for the synthesis of bis(6-amino-1,3-dimethyluracil-5-yl)methanes. RESEARCH ON CHEMICAL INTERMEDIATES 2019. [DOI: 10.1007/s11164-019-04036-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
|
9
|
Ma B, Wang X, Lu S, He H, Ma M, Shi Y, Chen S. A novel double agent of triazole-based zinc-containing complex which constituted Zn/Zn stabilizer system with zinc stearate as thermal stabilizer for poly(vinyl chloride). Polym Degrad Stab 2019. [DOI: 10.1016/j.polymdegradstab.2019.108953] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
10
|
Wang X, Ma B, Wang Y, Lu S, Ma M, Shi Y, Chen S. A new theory of “two-step stabilization mechanism” for triazole-based zinc-containing complex as thermal stabilizer for poly(vinyl chloride). Polym Degrad Stab 2019. [DOI: 10.1016/j.polymdegradstab.2019.06.027] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
11
|
Kumari P, Bharti R, Parvin T. Synthesis of aminouracil-tethered tri-substituted methanes in water by iodine-catalyzed multicomponent reactions. Mol Divers 2018; 23:205-213. [PMID: 30109557 DOI: 10.1007/s11030-018-9862-z] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2018] [Accepted: 08/02/2018] [Indexed: 11/28/2022]
Abstract
An efficient, mild and environmentally benign protocol has been developed for the synthesis of aminouracil-tethered tri-substituted methane derivatives. The three-component reaction of 2-hydroxy-1,4-naphthaquinone, 6-amino-1,3-dimethyluracil and aldehydes in the presence of molecular iodine as catalyst under reflux conditions resulted in aminouracil-tethered tri-substituted methane derivatives 4 in aqueous medium. Similarly, the four-component reaction of 2-hydroxy-1,4-naphthaquinone, o-phenylenediamine, aldehydes and aminouracil derivatives resulted in aminouracil-tethered tri-substituted methane derivatives 6 under the same reaction conditions. The notable features of this protocol are simple experimental procedure, cheap catalyst, readily available starting materials, moderate-to-good yields of the products having biologically active important moieties such as aminouracil, hydroxy-naphthaquinone/benzophenazine.
Collapse
Affiliation(s)
- Pooja Kumari
- Department of Chemistry, National Institute of Technology Patna, Ashok RajPath, Patna, 800 005, India
| | - Ruchi Bharti
- Department of Chemistry, National Institute of Technology Patna, Ashok RajPath, Patna, 800 005, India
| | - Tasneem Parvin
- Department of Chemistry, National Institute of Technology Patna, Ashok RajPath, Patna, 800 005, India.
| |
Collapse
|
12
|
Putra AE, Oe Y, Ohta T. Selective N
-Monoalkylation of 6-Aminouracils with Alcohols: An Environmentally Benign Protocol for the Synthesis of 6-Alkylaminouracils. European J Org Chem 2018. [DOI: 10.1002/ejoc.201701445] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Anggi Eka Putra
- Graduate School of Life and Medical Sciences; Doshisha University; 1-3 Tatara Miyakodani, Kyotanabe-shi 610-0394 Kyoto Japan
| | - Yohei Oe
- Graduate School of Life and Medical Sciences; Doshisha University; 1-3 Tatara Miyakodani, Kyotanabe-shi 610-0394 Kyoto Japan
- Department of Biomedical Information; Faculty of Life and Medical Sciences; Doshisha University; 1-3 Tatara Miyakodani, Kyotanabe-shi 610-0394 Kyoto Japan
| | - Tetsuo Ohta
- Graduate School of Life and Medical Sciences; Doshisha University; 1-3 Tatara Miyakodani, Kyotanabe-shi 610-0394 Kyoto Japan
- Department of Biomedical Information; Faculty of Life and Medical Sciences; Doshisha University; 1-3 Tatara Miyakodani, Kyotanabe-shi 610-0394 Kyoto Japan
| |
Collapse
|
13
|
Saikia L, Namsa ND, Thakur AJ. Microwave-Assisted Rapid Synthesis of Pyrido[2, 3-d
:6,5-d
]dipyrimidine-2,4,6,8-tetraones over Sulfonic Acid Functionalized Imidazolium Salts under Solvent-Free Condition. ChemistrySelect 2017. [DOI: 10.1002/slct.201701384] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Lakhinath Saikia
- Department of Chemistry; Rajiv Gandhi University (A Central University), Rono Hills; Doimukh, Arunachal Pradesh-791112 India
- Department of Chemical Sciences; Tezpur University (A Central Univrersity); Tezpur, Napaam Assam-784028 India
| | - Nima. D. Namsa
- Department of Molecular Biology and Biotechnology; Tezpur University (A Central Univrersity); Tezpur, Napaam Assam-784028 India
| | - A. J. Thakur
- Department of Chemical Sciences; Tezpur University (A Central Univrersity); Tezpur, Napaam Assam-784028 India
| |
Collapse
|
14
|
Sulfamic acid-catalyzed, environmentally benign synthesis of bis-tetronic acids at ambient temperature. RESEARCH ON CHEMICAL INTERMEDIATES 2017. [DOI: 10.1007/s11164-016-2611-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
15
|
A simple, one pot synthesis of furo[3,2-c]chromenes and evaluation of antimicrobial activity. Bioorg Med Chem Lett 2016; 26:4899-4902. [PMID: 27641471 DOI: 10.1016/j.bmcl.2016.09.022] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2016] [Revised: 08/19/2016] [Accepted: 09/07/2016] [Indexed: 11/23/2022]
Abstract
Synthesis of a number of 2-cyano-4-oxo-3-phenyl-3,4-dihydro-2H-furo[3,2-c]chromene-2-carboxylate compounds (5) have been accomplished by a simple, multicomponent one pot reaction and evaluated for in vitro antimicrobial activity against different Gram-positive and Gram-negative bacterial strains. The outcome of the screening study showed that compound 5c exhibited promising activity against Micrococcus luteus MTCC 2470 and Klebsiella planticola MTCC 530. Whereas, compound 5g exhibited excellent activity against Bacillus subtilis MTCC 121, Micrococcus luteus MTCC 2470, Klebsiella planticola MTCC 530, Escherichia coli MTCC 739 and displayed a moderate activity against Staphylococcus aureus MTCC 96 and Candida albicans MTCC 3017 when compared with Ciprofloxacin (standard control).
Collapse
|
16
|
Mohammadi Ziarani G, Hosseini Nasab N, Lashgari N. Synthesis of heterocyclic scaffolds through 6-aminouracil-involved multicomponent reactions. RSC Adv 2016. [DOI: 10.1039/c6ra02834a] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
There is a wide range of multicomponent reactions that include 6-aminouracil in the synthesis of heterocyclic compounds. This review highlights the advances in the use of 6-aminouracil in the synthesis of various organic compounds.
Collapse
Affiliation(s)
| | | | - Negar Lashgari
- School of Chemistry
- College of Science
- University of Tehran
- Tehran
- Iran
| |
Collapse
|
17
|
Das VK, Bharali P, Konwar BK, Mikkola JP, Shchukarev A, Thakur AJ. A convenient ‘NOSE’ approach used towards the synthesis of 6-amino-1,3-dimethyl-5-indolyl-1H-pyrimidine-2,4-dione derivatives catalyzed by nano-Ag. NEW J CHEM 2016. [DOI: 10.1039/c5nj02134k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Uracil derivatives were synthesized in high yield catalyzed by reusable nano-Ag at 70 °C upon reacting 6-amino-1,3-dimethyluracil and indole derivatives.
Collapse
Affiliation(s)
| | - Pranjal Bharali
- Department of Molecular Biology and Biotechnology
- Tezpur University
- Tezpur
- India
| | - Bolin Kumar Konwar
- Department of Molecular Biology and Biotechnology
- Tezpur University
- Tezpur
- India
| | - Jyri-Pekka Mikkola
- Technical Chemistry
- Department of Chemistry
- Umeå University
- SE-90187 Umeå
- Sweden
| | - Andrey Shchukarev
- Industrial Chemistry & Reaction Engineering
- Johan Gadolin Process Chemistry Centre
- Åbo Akademi University
- FI-20500 Åbo-Turku
- Finland
| | | |
Collapse
|
18
|
Hirashita T, Ogawa M, Hattori R, Okochi S, Araki S. Condensation of Indoles and Aldehydes in Subcritical Water without the Addition of Catalysts. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2015. [DOI: 10.1246/bcsj.20150247] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Tsunehisa Hirashita
- Omohi College, Graduate School of Engineering, Nagoya Institute of Technology
| | - Masaki Ogawa
- Omohi College, Graduate School of Engineering, Nagoya Institute of Technology
| | - Reina Hattori
- Omohi College, Graduate School of Engineering, Nagoya Institute of Technology
| | - Sota Okochi
- Omohi College, Graduate School of Engineering, Nagoya Institute of Technology
| | - Shuki Araki
- Omohi College, Graduate School of Engineering, Nagoya Institute of Technology
| |
Collapse
|
19
|
Azev YA, Ermakova OS, Gibor AM, Ezhikova MA, Kodess MI, Berseneva VS. Unusual reactions of 6-amino-1,3-dimethyluracil with some aliphatic aldehydes. MENDELEEV COMMUNICATIONS 2015. [DOI: 10.1016/j.mencom.2015.07.028] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
20
|
Szpunar M, Loska R. A General Synthesis of Bis(o-azaheteroaryl)methane Derivatives fromN-Oxides of Azines and Azoles. European J Org Chem 2015. [DOI: 10.1002/ejoc.201500072] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
|
21
|
Bingi C, Kale A, Nanubolu JB, Atmakur K. Acid promoted synthesis of cyclic 1,3-dione fused symmetrical 2,8-dioxabicyclo[3.3.1]nonanes. RSC Adv 2015. [DOI: 10.1039/c5ra23706h] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Synthesis of symmetrical 2,8-dioxabicyclo[3.3.1]nonanes (4) is accomplished by the reaction of β-enamino ketones (1) and 1,3-cyclohexanediones (2) in AcOH. However, the presence of TFA in toluene gave xanthenes (5).
Collapse
Affiliation(s)
- Chiranjeevi Bingi
- Division of Crop Protection Chemicals
- CSIR-Indian Institute of Chemical Technology
- Hyderabad 500 007
- India
| | - Ashok Kale
- Division of Crop Protection Chemicals
- CSIR-Indian Institute of Chemical Technology
- Hyderabad 500 007
- India
| | - Jagadeesh Babu Nanubolu
- Laboratory of X-ray Crystallography
- CSIR-Indian Institute of Chemical Technology
- Hyderabad 500 007
- India
| | - Krishnaiah Atmakur
- Division of Crop Protection Chemicals
- CSIR-Indian Institute of Chemical Technology
- Hyderabad 500 007
- India
- AcSIR-Indian Institute of Chemical Technology
| |
Collapse
|
22
|
Roy S, Bauza A, Banik R, Chandra Biswas S, Frontera A, Das S. Structural basis for molecular recognition, theoretical studies and anti-bacterial properties of three bis-uracil derivatives. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.07.098] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|
23
|
Kalita SJ, Mecadon H, Chandra Deka D. Reaction of 6-aminouracils with aldehydes in water as both solvent and reactant under FeCl3·6H2O catalysis: towards 5-alkyl/arylidenebarbituric acids. RSC Adv 2014. [DOI: 10.1039/c4ra03413a] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
5-Alkyl/arylidenebarbituric acids were efficiently synthesized through an FeCl3·6H2O catalyzed domino reaction of 6-aminouracils, water and aldehydes with water serving a dual role as both solvent and reactant, under benign conditions.
Collapse
Affiliation(s)
| | - Hormi Mecadon
- Department of Chemistry. University of Gauhati
- Guwahati 781014, India
| | | |
Collapse
|
24
|
Saikia L, Talukdar D, Deka RC, Thakur AJ. KI-VO(acac) 2-H 2O 2-AcOH, A New Iodinating System for Selective Iodination at C-5 Position of Activated Pyrimidinediones: A Combined Experimental and Density Functional Study. J Heterocycl Chem 2013. [DOI: 10.1002/jhet.1575] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Lakhinath Saikia
- Department of Chemical Sciences; Tezpur University; Napaam; Tezpur; 784 028; Assam; India
| | - Dhrubajyoti Talukdar
- Department of Chemical Sciences; Tezpur University; Napaam; Tezpur; 784 028; Assam; India
| | - Ramesh C. Deka
- Department of Chemical Sciences; Tezpur University; Napaam; Tezpur; 784 028; Assam; India
| | - Ashim J. Thakur
- Department of Chemical Sciences; Tezpur University; Napaam; Tezpur; 784 028; Assam; India
| |
Collapse
|
25
|
Nanorod-Shaped Basic Al2O3 Catalyzed N,N-Diformylation of Bisuracil Derivatives: A Greener "NOSE" Approach. ISRN ORGANIC CHEMISTRY 2013; 2013:793159. [PMID: 24052870 PMCID: PMC3767338 DOI: 10.1155/2013/793159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/14/2013] [Accepted: 06/10/2013] [Indexed: 12/04/2022]
Abstract
A feasible “NOSE” (nanoparticles-catalyzed organic synthesis enhancement) protocol has been developed for N,N-diformylation of bisuracil derivatives using nano-Al2O3 rods as an efficient, inexpensive, and recyclable catalyst under solvent-free reaction condition at 40°C. The catalyst was reused up to the 4th cycle without affecting the rate and yield of the N,N-diformylation products appreciably.
Collapse
|
26
|
Gawande MB, Bonifácio VDB, Luque R, Branco PS, Varma RS. Benign by design: catalyst-free in-water, on-water green chemical methodologies in organic synthesis. Chem Soc Rev 2013; 42:5522-51. [DOI: 10.1039/c3cs60025d] [Citation(s) in RCA: 501] [Impact Index Per Article: 45.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
|
27
|
Das S, Thakur AJ, Medhi T, Das B. An efficient stereo-controlled synthesis of bis-pyrimido-[4,5-d]-pyrimidine derivatives via aza-Diels–Alder methodology and their preliminary bioactivity. RSC Adv 2013. [DOI: 10.1039/c3ra22089c] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
|
28
|
Liubchak K, Tolmachev A, Grygorenko OO, Nazarenko K. An approach to alicyclic ring-fused xanthines. Tetrahedron 2012. [DOI: 10.1016/j.tet.2012.08.014] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
|
29
|
A novel and efficient one-pot four-component tandem approach for the synthesis of pyran derivatives. Mol Divers 2012; 16:423-30. [PMID: 22729829 DOI: 10.1007/s11030-012-9375-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2012] [Accepted: 05/28/2012] [Indexed: 10/28/2022]
Abstract
A series of new pyran derivatives are efficiently synthesized in a one-pot four-component tandem reaction via Suzuki coupling followed by a three-component reaction from readily available 4-bromobenzaldehyde, activated methylene compounds, and carbonyl compounds. Single crystal X-ray structure of the synthesized product is presented. The versatility and efficiency of the proposed methodology has been demonstrated in the synthesis of novel heterocyclic molecules.
Collapse
|
30
|
|