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Balali Z, Safaei-Ghomi J, Mashhadi E. Synthesis of 3,4-dihydropyrimidines and octahydroquinazolinones by SBA-15 supported schiff-base iron (III) complex as durable and reusable catalyst under ultrasound irradiation. Sci Rep 2024; 14:14810. [PMID: 38926512 PMCID: PMC11208551 DOI: 10.1038/s41598-024-65519-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: 03/25/2024] [Accepted: 06/20/2024] [Indexed: 06/28/2024] Open
Abstract
Biginelli-type heterocyclic compounds are particularly important due to their several chemical reactivities and various range of pharmacological activity. Therefore Biginelli reaction has witnessed several modification and numerous investigations are continuing in this field to develop more effective and efficient methodologies. In this research, Iron (III) schiff base immobilized SBA-15 has been prepared as a valuable, efficient, and recoverable catalyst for the Biginelli reaction. The morphology of the prepared catalyst was identified by spectroscopic characterization techniques and structural microscopic analysis including Fourier transform infrared (FT-IR) patterns, X-ray diffraction (XRD) by powder crystal method, Energy-dispersive X-ray spectroscopy (EDS) study, Thermogravimetric-Differential thermal analysis (TGA-DTA), Transmission electron microscopy (TEM) and Field emission scanning electron microscopy (FE-SEM) images. Biginelli compounds containing 3,4-dihydropyrimidines and octahydroquinazolinones were conveniently synthesized by this catalyzed protocol from the cycloaddition of aromatic aldehydes with the 1,3-dicarbonyl substrates and urea via ultrasonic waves. The several advantages of the presented approach are high yields and easy isolation of products, shorter reaction times, and milder conditions, structural stability and reusable catalyst. The combination of heterogeneous catalyst and ultrasonic radiation can make catalytic reactions more efficient than traditional ways attractive for academic researchers and application scholars in the industry.
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Affiliation(s)
- Zeynab Balali
- Department of Organic Chemistry, Faculty of Chemistry, University of Kashan, Kashan, I. R. of Iran
| | - Javad Safaei-Ghomi
- Department of Organic Chemistry, Faculty of Chemistry, University of Kashan, Kashan, I. R. of Iran.
| | - Elahe Mashhadi
- Department of Organic Chemistry, Faculty of Chemistry, University of Kashan, Kashan, I. R. of Iran
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In Melting Points We Trust: A Review on the Misguiding Characterization of Multicomponent Reactions Adducts and Intermediates. Molecules 2022; 27:molecules27217552. [DOI: 10.3390/molecules27217552] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Revised: 10/25/2022] [Accepted: 11/02/2022] [Indexed: 11/06/2022] Open
Abstract
We discuss herein the problems associated with using melting points to characterize multicomponent reactions’ (MCRs) products and intermediates. Although surprising, it is not rare to find articles in which these MCRs final adducts (or their intermediates) are characterized solely by comparing melting points with those available from other reports. A brief survey among specialized articles highlights serious and obvious problems with this practice since, for instance, cases are found in which as many as 25 quite contrasting melting points have been attributed to the very same MCR adduct. Indeed, it seems logical to assume that the inherent non-confirmatory nature of melting points could be vastly misleading as a protocol for structural confirmation, but still many publications (also in the Q1 and Q2 quartiles) insist on using it. This procedure contradicts best practices in organic synthesis, and articles fraught with limitations and misleading conclusions have been published in the MCRs field. The drawbacks inherent to this practice are indeed serious and have misguided MCRs advances. We therefore suggest some precautions aimed at avoiding future confusions.
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Yahyazadeh A, Nafei-Kohi M, Abbaspour-Gilandeh E, Aghaei-Hashjin M. A new procedure for the preparation of 3,4-dihydropyrimidin-2(1H)-one and octahydroquinazolinone derivatives catalyzed by SCMNPs@CA-EA-SO3H under solvent-free conditions. LETT ORG CHEM 2021. [DOI: 10.2174/1570178619666211230123828] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Abstract:
Catalyzed with SCMNPs@CA-EA-SO3H, as a green and heterogeneous solid acid catalyst, 3,4-dihydropyrimidin-2(1H)-one and octahydroquinazolinone derivatives were obtained in high-to-excellent yields and in short reaction times via the one-pot multi-component condensation of ethyl acetoacetate or dimedone, urea, and aldehyde compounds under solvent-free conditions. More importantly, the green catalytic system could be easily collected from the reaction solution utilizing an external magnet and reused for five runs with a negligible decrease in yields and reaction rate.
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Affiliation(s)
- Asieh Yahyazadeh
- Chemistry Department, University of Guilan, Rasht 41335‑1914, Iran
| | | | | | - Mehraneh Aghaei-Hashjin
- Department of Chemistry, College of Science, University of Mohaghegh Ardabili, Ardabil, Iran
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Razavian Mofrad R, Kabirifard H, Tajbakhsh M, Firouzzadeh Pasha G. Amine‐functionalized nano‐NaY zeolite for the synthesis of
N
‐acetyl pyrazoles and dihydropyrimidines. Appl Organomet Chem 2021. [DOI: 10.1002/aoc.6383] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
| | - Hassan Kabirifard
- Department of Chemistry Islamic Azad University, Tehran North Branch Tehran Iran
| | - Mahmood Tajbakhsh
- Department of Organic Chemistry, Faculty of Chemistry University of Mazandaran Babolsar Iran
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Patil RV, Chavan JU, Dalal DS, Shinde VS, Beldar AG. Biginelli Reaction: Polymer Supported Catalytic Approaches. ACS COMBINATORIAL SCIENCE 2019; 21:105-148. [PMID: 30645098 DOI: 10.1021/acscombsci.8b00120] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
The Biginelli product, dihydropyrimidinone (DHPM) core, and its derivatives are of immense biological importance. There are several methods reported as modifications to the original Biginelli reaction. Among them, many involve the use of different catalysts. Also, among the advancements that have been made to the Biginelli reaction, improvements in product yields, less hazardous reaction conditions, and simplified isolation of products from the reaction predominate. Recently, solid-phase synthetic protocols have attracted the research community for improved yields, simplified product purification, recyclability of the solid support, which forms a special economic approach for Biginelli reaction. The present Review highlights the role of polymer-supported catalysts in Biginelli reaction, which may involve organic, inorganic, or hybrid polymers as support for catalysts. A few of the schemes involve magnetically recoverable catalysts where work up provides green approach relative to traditional methods. Some research groups used polymer-catalyst nanocomposites and polymer-supported ionic liquids as catalyst. Solvent-free, an ultrasound or microwave-assisted Biginelli reactions with polymer-supported catalysts are also reported.
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Affiliation(s)
- Rajendra V. Patil
- Department of Chemistry, P.S.G.V.P.M’s SIP Arts, GBP Science and STKVS Commerce College, Shahada, Nandurbar-425409, India
| | - Jagdish U. Chavan
- Department of Chemistry, P.S.G.V.P.M’s SIP Arts, GBP Science and STKVS Commerce College, Shahada, Nandurbar-425409, India
| | - Dipak S. Dalal
- School of Chemical Sciences, North Maharashtra University, Jalgaon-425001, India
| | - Vaishali S. Shinde
- Garware Research Centre, Department of Chemistry, University of Pune, Pune-411 007, India
| | - Anil G. Beldar
- Department of Chemistry, P.S.G.V.P.M’s SIP Arts, GBP Science and STKVS Commerce College, Shahada, Nandurbar-425409, India
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Jetti SR, Verma D, Jain S. 3-[(3-(Trimethoxysilyl)propyl)thio]propane-1-oxy-sulfonic acid: An efficient recyclable heterogeneous catalyst for the synthesis of 3,4-dihydropyrimidin-2(1H)-ones/thiones. ARAB J CHEM 2017. [DOI: 10.1016/j.arabjc.2013.12.012] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Bahekar SP, Sarode PB, Wadekar MP, Chandak HS. Simple and efficient synthesis of 3,4-dihydropyrimidin-2(1 H )-thiones utilizing l -proline nitrate as a proficient, recyclable and eco-friendly catalyst. JOURNAL OF SAUDI CHEMICAL SOCIETY 2017. [DOI: 10.1016/j.jscs.2015.09.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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8
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Liu Z, Ma R, Cao D, Liu C. New Efficient Synthesis of 3,4-Dihydropyrimidin-2(1H)-ones Catalyzed by Benzotriazolium-Based Ionic Liquids under Solvent-Free Conditions. Molecules 2016; 21:462. [PMID: 27070558 PMCID: PMC6273612 DOI: 10.3390/molecules21040462] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2016] [Revised: 03/30/2016] [Accepted: 04/05/2016] [Indexed: 12/02/2022] Open
Abstract
An efficient synthesis of novel 3,4-dihydropyrimidin-2(1H)-ones (DHPMs) and their derivatives, using Brønsted acidic ionic liquid [C2O2BBTA][TFA] as a catalyst, from the condensation of aryl aldehyde, β-ketoester and urea was described. Reactions proceeded smoothly for 40 min under solvent-free conditions and gave the desirable products with good to excellent yields (up to 99%). The catalyst could be easily recycled and reused with similar efficacies for at least six cycles.
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Affiliation(s)
- Zhiqing Liu
- Key Laboratory of Oil and Gas Fine Chemicals of Ministry of Education, School of Chemistry and Chemical Engineering, Xinjiang University, Urumqi 830046, China.
| | - Rong Ma
- Key Laboratory of Oil and Gas Fine Chemicals of Ministry of Education, School of Chemistry and Chemical Engineering, Xinjiang University, Urumqi 830046, China.
| | - Dawei Cao
- Key Laboratory of Oil and Gas Fine Chemicals of Ministry of Education, School of Chemistry and Chemical Engineering, Xinjiang University, Urumqi 830046, China.
| | - Chenjiang Liu
- Key Laboratory of Oil and Gas Fine Chemicals of Ministry of Education, School of Chemistry and Chemical Engineering, Xinjiang University, Urumqi 830046, China.
- Physics and Chemistry Detecting Center, Xinjiang University, Urumqi 830046, China.
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9
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Shen P, Xu M, Yin D, Xie S, Zhou C, Li F. Halogenated macroporous sulfonic resins as efficient catalysts for the Biginelli reaction. CATAL COMMUN 2016. [DOI: 10.1016/j.catcom.2016.01.010] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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10
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Zolfagharinia S, Koukabi N, Kolvari E. A unique opportunity for the utilization of glass wastes as a resource for catalytic applications: toward a cleaner environment. RSC Adv 2016. [DOI: 10.1039/c6ra22791k] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
n-glass-waste-SO3H at the service of catalytic application.
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11
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Sheykhan M, Yahyazadeh A, Rahemizadeh Z. Cu–EDTA-modified APTMS-Fe3O4@SiO2 core–shell nanocatalyst: a novel magnetic recoverable catalyst for the Biginelli reaction. RSC Adv 2016. [DOI: 10.1039/c6ra02415g] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A novel copper–ethylenediamine tetracarboxylate modified core–shell magnetic catalyst is introduced.
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12
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Gong K, Wang H, Wang S, Ren X. β-Cyclodextrin-propyl sulfonic acid: a new and eco-friendly catalyst for one-pot multi-component synthesis of 3,4-dihydropyrimidones via Biginelli reaction. Tetrahedron 2015. [DOI: 10.1016/j.tet.2015.05.028] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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13
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Wang JH, Tang GM, Wang YT, Cui YZ, Wang JJ, Ng SW. A series of phenyl sulfonate metal coordination polymers as catalysts for one-pot Biginelli reactions under solvent-free conditions. Dalton Trans 2015; 44:17829-40. [DOI: 10.1039/c5dt03135d] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
A series of phenyl sulfonate metal coordination polymers have been obtained under hydrothermal conditions, which show high catalytic performances for one-pot Biginelli condensation reactions under solvent-free conditions.
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Affiliation(s)
- Jin-Hua Wang
- Department of Chemical Engineering
- Shandong Provincial Key Laboratory of Fine Chemicals
- Qilu University of Technology
- Jinan
- China
| | - Gui-Mei Tang
- Department of Chemical Engineering
- Shandong Provincial Key Laboratory of Fine Chemicals
- Qilu University of Technology
- Jinan
- China
| | - Yong-Tao Wang
- Department of Chemical Engineering
- Shandong Provincial Key Laboratory of Fine Chemicals
- Qilu University of Technology
- Jinan
- China
| | - Yue-Zhi Cui
- Department of Chemical Engineering
- Shandong Provincial Key Laboratory of Fine Chemicals
- Qilu University of Technology
- Jinan
- China
| | - Jun-Jie Wang
- Department of Chemistry
- Anyang Normal University
- Henan
- PR China
| | - Seik Weng Ng
- Department of Chemistry
- University of Malaya
- Kuala Lumpur
- Malaysia
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14
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Javidi J, Esmaeilpour M, Dodeji FN. Immobilization of phosphomolybdic acid nanoparticles on imidazole functionalized Fe3O4@SiO2: a novel and reusable nanocatalyst for one-pot synthesis of Biginelli-type 3,4-dihydro-pyrimidine-2-(1H)-ones/thiones under solvent-free conditions. RSC Adv 2015. [DOI: 10.1039/c4ra09929j] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Fe3O4@SiO2-imid-PMAn: a novel and reusable nanocatalysts.
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Affiliation(s)
- Jaber Javidi
- Department of Pharmaceutics
- School of Pharmacy
- Shahid Beheshti University of Medical Sciences
- Tehran
- Iran
| | | | - Fatemeh Nowroozi Dodeji
- Department of Pharmaceutics
- School of Pharmacy
- Shahid Beheshti University of Medical Sciences
- Tehran
- Iran
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15
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Guilera J, Bringué R, Ramírez E, Fité C, Tejero J. Kinetic study of ethyl octyl ether formation from ethanol and 1-octanol on Amberlyst 70. AIChE J 2014. [DOI: 10.1002/aic.14497] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Jordi Guilera
- Chemical Engineering Dept., Faculty of Chemistry; University of Barcelona; C/Martí i Franquès 1 08028 Barcelona Spain
| | - Roger Bringué
- Chemical Engineering Dept., Faculty of Chemistry; University of Barcelona; C/Martí i Franquès 1 08028 Barcelona Spain
| | - Eliana Ramírez
- Chemical Engineering Dept., Faculty of Chemistry; University of Barcelona; C/Martí i Franquès 1 08028 Barcelona Spain
| | - Carles Fité
- Chemical Engineering Dept., Faculty of Chemistry; University of Barcelona; C/Martí i Franquès 1 08028 Barcelona Spain
| | - Javier Tejero
- Chemical Engineering Dept., Faculty of Chemistry; University of Barcelona; C/Martí i Franquès 1 08028 Barcelona Spain
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16
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Dekamin MG, Ilkhanizadeh S, Latifidoost Z, Daemi H, Karimi Z, Barikani M. Alginic acid: a highly efficient renewable and heterogeneous biopolymeric catalyst for one-pot synthesis of the Hantzsch 1,4-dihydropyridines. RSC Adv 2014. [DOI: 10.1039/c4ra11801d] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Alginic acid was found to be an efficient, environmentally benign, easily recoverable and low-cost catalyst for clean synthesis of 1,4-dihydropiridine derivatives (DHPs).
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Affiliation(s)
- Mohammad G. Dekamin
- Pharmaceutical and Biologically-Active Compounds Research Laboratory, Department of Chemistry
- Iran University of Science and Technology
- Tehran 16846-13114, Iran
| | - Siamand Ilkhanizadeh
- Pharmaceutical and Biologically-Active Compounds Research Laboratory, Department of Chemistry
- Iran University of Science and Technology
- Tehran 16846-13114, Iran
| | - Zahra Latifidoost
- Pharmaceutical and Biologically-Active Compounds Research Laboratory, Department of Chemistry
- Iran University of Science and Technology
- Tehran 16846-13114, Iran
| | - Hamed Daemi
- Polyurethane Department
- Iran Polymer and Petrochemical Institute
- Tehran, Iran
| | - Zahra Karimi
- Pharmaceutical and Biologically-Active Compounds Research Laboratory, Department of Chemistry
- Iran University of Science and Technology
- Tehran 16846-13114, Iran
| | - Mehdi Barikani
- Polyurethane Department
- Iran Polymer and Petrochemical Institute
- Tehran, Iran
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Liberto NA, de Paiva Silva S, de Fátima Â, Fernandes SA. β-Cyclodextrin-assisted synthesis of Biginelli adducts under solvent-free conditions. Tetrahedron 2013. [DOI: 10.1016/j.tet.2013.07.024] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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18
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Ghorbani-Choghamarani A, Zamani P. Three component reactions: An efficient and green synthesis of 3,4-dihydropyrimidin-2-(1H)-ones and thiones using silica gel-supported l-pyrrolidine-2-carboxylic acid-4-hydrogen sulfate. CHINESE CHEM LETT 2013. [DOI: 10.1016/j.cclet.2013.05.033] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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19
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Fe–Al/clay as an efficient heterogeneous catalyst for solvent-free synthesis of 3, 4-dihydropyrimidones. J CHEM SCI 2013. [DOI: 10.1007/s12039-013-0413-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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20
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Shi XL, Yang H, Tao M, Zhang W. Sulfonic acid-functionalized polypropylene fiber: highly efficient and recyclable heterogeneous Brønsted acid catalyst. RSC Adv 2013. [DOI: 10.1039/c3ra23187a] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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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]
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22
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Polyvinylsulfonic Acid: An Efficient, Water-Soluble and Reusable Brønsted Acid Catalyst for the Three-Component Synthesis of 3,4-Dihydropyrimidin-2(1H)-ones/thiones in Water and Ethanol. Catal Letters 2012. [DOI: 10.1007/s10562-012-0873-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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23
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Revisit to the Biginelli reaction: a novel and recyclable bioglycerol-based sulfonic acid functionalized carbon catalyst for one-pot synthesis of substituted 3,4-dihydropyrimidin-2-(1H)-ones. Tetrahedron Lett 2012. [DOI: 10.1016/j.tetlet.2012.02.018] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Biginelli Condensation: Synthesis and Structure Diversification of 3,4-Dihydropyrimidin-2(1H)-one Derivatives. ADVANCES IN HETEROCYCLIC CHEMISTRY 2012. [DOI: 10.1016/b978-0-12-396530-1.00003-6] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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25
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Jetti SR, Verma D, Jain S. An Efficient One-Pot Green Protocol for the Synthesis of 5-Unsubstituted 3,4-Dihydropyrimidin-2(1H)-Ones Using Recyclable Amberlyst 15 DRY as a Heterogeneous Catalyst via Three-Component Biginelli-Like Reaction. ISRN ORGANIC CHEMISTRY 2012; 2012:480989. [PMID: 24052845 PMCID: PMC3767336 DOI: 10.5402/2012/480989] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/02/2012] [Accepted: 09/24/2012] [Indexed: 11/23/2022]
Abstract
An environmentally benign green protocol for the synthesis of 5-unsubstituted 3,4-dihydropyrimidin-2(1H)-ones using Amberlyst 15 DRY as a recyclable catalyst has been developed. The use of resinous, nontoxic, thermally stable, and inexpensive Amberlyst 15 DRY, as a recyclable heterogeneous catalyst, makes the process simple with negligible chemical waste. Among the various solid acid catalysts Amberlyst 15 DRY was found to be the most efficient catalyst with regard to reaction time, yield, and ease of work-up procedure.
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Affiliation(s)
- Srinivasa Rao Jetti
- Laboratory of Heterocycles, School of Studies in Chemistry & Biochemistry, Vikram University, Ujjain 456010, Madhya Pradesh, India
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Mohammadzadeh-Dehsorkh N, Davoodnia A, Tavakoli-Hoseini N, Moghaddas M. An Environmentally Benign One-Pot Synthesis of 3,4-Dihydropyrimidin-2(1H)-ones and -thiones Using Tetrabutylammonium Hexatungstate [TBA]2[W6O19] as a Recyclable Catalyst. ACTA ACUST UNITED AC 2011. [DOI: 10.1080/15533174.2011.591358] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
Affiliation(s)
| | - Abolghasem Davoodnia
- a Department of Chemistry, Mashhad Branch , Islamic Azad University , Mashhad, Iran
| | | | - Maryam Moghaddas
- a Department of Chemistry, Mashhad Branch , Islamic Azad University , Mashhad, Iran
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Rosati O, Curini M, Montanari F, Nocchetti M, Genovese S. α-Zirconium Sulfophenylphosphonate as a Catalyst for the Synthesis of 3,4-Dihydropyrimidin-2(1H)-One Derivatives Under Solvent Free Conditions. Catal Letters 2011. [DOI: 10.1007/s10562-011-0604-4] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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28
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Shobha D, Chari M, Mano A, Selvan S, Mukkanti K, Vinu A. Synthesis of 3,4-dihydropyrimidin-2-ones (DHPMs) using mesoporous aluminosilicate (AlKIT-5) catalyst with cage type pore structure. Tetrahedron 2009. [DOI: 10.1016/j.tet.2009.10.074] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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