1
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Kalpana K, Rani VA, Ranga A, Perumandla R, Ramani R. One-Pot Synthesis of 6-Amino-4-(furan/thiophen/pyrrol-2-yl)-3-methyl-1,4-dihydropyrano[2,3-c]pyrazole-5-carbonitriles, Evaluation of Anticancer Activity and Molecular Modelling Studies. RUSS J GEN CHEM+ 2023. [DOI: 10.1134/s1070363223010188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/11/2023]
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2
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Karrabi M, Malmir M, Shafiei toran poshti E, Heravi MM, Hosseinnejad T. A theoretical and experimental study on ecofriendly one-pot synthesis of pyrazolopyranopyrimidines catalysed by CuO functionalized montmorillonite. INORG CHEM COMMUN 2022. [DOI: 10.1016/j.inoche.2022.110367] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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3
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Synthesis, DFT calculations, In silico studies, and biological evaluation of pyrano[2,3-c]pyrazole and pyrazolo[4′,3′:5,6]pyrano[2,3-d]pyrimidine derivatives. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.134587] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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4
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Kondabanthini S, Katari NK, Srimannarayana M, Gundla R, Kapavarapu R, Pal M. Wang resin catalyzed sonochemical synthesis of dihydropyrano[2,3-c]pyrazole derivatives and their interactions with SIRT1. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.133527] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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5
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Design, preparation and application of the semicarbazide-pyridoyl-sulfonic acid-based nanocatalyst for the synthesis of pyranopyrazoles. Sci Rep 2022; 12:14347. [PMID: 35999336 PMCID: PMC9399233 DOI: 10.1038/s41598-022-18651-5] [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: 04/09/2022] [Accepted: 08/17/2022] [Indexed: 11/09/2022] Open
Abstract
A novel, efficient, and recoverable nanomagnetic catalyst bearing the semicarbazide linkers, namely, Fe3O4@SiO2@OSi(CH2)3-N(3-pyridoyl sulfonic acid)semicarbazide (FSiPSS) was designed, synthesized and characterized by the use of various techniques such as FT-IR, EDX, elemental mapping analysis, XRD, SEM, TEM, TGA/DTA, BET, and VSM. Then, the catalytic capability of the novel prepared nanomagnetic FSiPSS catalyst was successfully investigated in the synthesis of diverse pyranopyrazoles through a one-pot four-component condensation reaction of ethyl acetoacetate, hydrazine hydrate, aromatic aldehydes, and malononitrile or ethyl cyano-acetate by the help of ultrasonication in very short reaction time, good to high yields and easy work-up (Fig. 1). Figure 1 Synthesis of diverse pyranopyrazoles by the FSiPSS nano-catalyst.
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6
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Kumar VH, Tamminana R. Copper‐catalyzed multicomponent green reaction approach: Synthesis of dihydropyrano [2, 3‐c] pyrazoles and evaluation of their anti‐cancer activity. J Heterocycl Chem 2022. [DOI: 10.1002/jhet.4555] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Venkata Hema Kumar
- Department of Chemistry GITAM Deemed to be University, NH‐207, Doddaballapur Taluk Bengaluru Rural Karnataka Inida
| | - Ramana Tamminana
- Department of Chemistry GITAM Deemed to be University, NH‐207, Doddaballapur Taluk Bengaluru Rural Karnataka Inida
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7
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Ghasemzadeh MA, Mirhosseini-Eshkevari B, Dadashi J. IRMOF-3 Functionalized GO/CuFe2O4: A New and Recyclable Catalyst for the Synthesis of Dihydropyrano[2,3-c]Pyrazoles under Ultrasound Irradiations. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.132843] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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8
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A phenylazophenylenediamine-based La-complex as a superb nanocatalyst for the synthesis of diverse pyrano[2,3-c]pyrazoles. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.132713] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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9
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Recent Advances in Multicomponent Reactions Catalysed under Operationally Heterogeneous Conditions. Catalysts 2022. [DOI: 10.3390/catal12070725] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Multicomponent reactions (MCRs) have been gaining significance and attention over the past decade because of their ability to furnish complex products by using readily available and simple starting materials while simultaneously eliminating the need to separate and purify any intermediates. More so, most of these products have been found to exhibit diverse biological activities. Another paradigm shift which has occurred contemporarily is the switch to heterogeneous catalysis, which results in additional benefits such as the reduction of waste and an increase in the safety of the process. More importantly, it allows the user to recover and reuse the catalyst for multiple runs. In summary, both methodologies adhere to the principles of green chemistry, a philosophy which needs to become overarchingly enshrined. The plethora of reactions and catalysts which have been developed gives hope that chemists are slowly changing their ideology. As a result, this review attempts to discuss multicomponent reactions catalysed by operationally heterogeneous catalysts in the past 10 years. In this review, a further distinction is made between the MCRs which lead to the formation of heterocycles and those which do not.
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10
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Das D, Saha M, Das AR. Synthesis, properties and catalysis of quantum dots in C–C and C-heteroatom bond formations. PHYSICAL SCIENCES REVIEWS 2022. [DOI: 10.1515/psr-2021-0093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Luminescent quantum dots (QDs) represent a new form of carbon nanomaterials which have gained widespread attention in recent years, especially in the area of chemical sensing, bioimaging, nanomedicine, solar cells, light-emitting diode (LED), and electrocatalysis. Their extremely small size renders some unusual properties such as quantum confinement effects, good surface binding properties, high surface‐to‐volume ratios, broad and intense absorption spectra in the visible region, optical and electronic properties different from those of bulk materials. Apart from, during the past few years, QDs offer new and versatile ways to serve as photocatalysts in organic synthesis. Quantum dots (QD) have band gaps that could be nicely controlled by a number of factors in a complicated way, mentioned in the article. Processing, structure, properties and applications are also reviewed for semiconducting quantum dots. Overall, this review aims to summarize the recent innovative applications of QD or its modified nanohybrid as efficient, robust, photoassisted redox catalysts in C–C and C-heteroatom bond forming reactions. The recent structural modifications of QD or its core structure in the development of new synthetic methodologies are also highlighted. Following a primer on the structure, properties, and bio-functionalization of QDs, herein selected examples of QD as a recoverable sustainable nanocatalyst in various green media are embodied for future reference.
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Affiliation(s)
- Dwaipayan Das
- Department of Chemistry , University of Calcutta , Kolkata 700009 , India
| | - Moumita Saha
- Department of Chemistry , University of Calcutta , Kolkata 700009 , India
| | - Asish. R. Das
- Department of Chemistry , University of Calcutta , Kolkata 700009 , India
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11
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Reddy SR, Jayakumar J. Cu-Catalysed tandem reactions for building poly hetero atom heterocycles-green chemistry tool. PHYSICAL SCIENCES REVIEWS 2022. [DOI: 10.1515/psr-2021-0232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Of late, regio-selective tandem reactions are given much attention due to the formation of several multiple bonds in a single synthetic operation, avoids altering the reaction conditions, isolation of the intermediates during the reaction, reduces the production of toxic waste to the environment and can produce highly complex organic molecules with desired selectivity. Though, it requires the well-built knowledge for optimization of the process, it permits to make the complex organic molecules with least number of steps, and it has eventually made great interest and inspiration to the upcoming organic chemists. Presentation of current book chapter presents the Cu-Catalysed tandem reactions for building poly hetero atom heterocyclic compounds via green approach.
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Affiliation(s)
| | - Jyothylakshmi Jayakumar
- Department of Chemistry , Vellore Institute of Technology , Vellore , Tamil Nadu , 632014 , India
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12
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Badiger KB, Giddaerappa, Hanumanthappa R, Sannegowda LK, Kamanna K. An Agro‐Waste Based Eco‐Friendly Synthesis, Electrochemical Behavior and Anti‐oxidant Properties Evaluation of Pyrano[2,3‐
c
]pyrazole and Pyrazolyl‐4
H
‐chromenes Derivatives. ChemistrySelect 2022. [DOI: 10.1002/slct.202104033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Krishnappa B. Badiger
- Peptide and Medicinal Chemistry Research Laboratory Department of Chemistry Rani Channamma University P−B, NH-4 Belagavi 591 156 India
| | - Giddaerappa
- Department of Studies in Chemistry Vijayanagara Sri Krishnadevaraya University Ballari Karnataka 583105 India
| | - Ramesha Hanumanthappa
- Peptide and Medicinal Chemistry Research Laboratory Department of Chemistry Rani Channamma University P−B, NH-4 Belagavi 591 156 India
| | - Lokesh Koodlur Sannegowda
- Department of Studies in Chemistry Vijayanagara Sri Krishnadevaraya University Ballari Karnataka 583105 India
| | - Kantharaju Kamanna
- Peptide and Medicinal Chemistry Research Laboratory Department of Chemistry Rani Channamma University P−B, NH-4 Belagavi 591 156 India
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13
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Heravi MM, Malakooti R, Kafshdarzadeh K, Amiri Z, Zadsirjan V, Atashin H. Supported palladium oxide nanoparticles in Al-SBA-15 as an efficient and reusable catalyst for the synthesis of pyranopyrazole and benzylpyrazolyl coumarin derivatives via multicomponent reactions. RESEARCH ON CHEMICAL INTERMEDIATES 2022. [DOI: 10.1007/s11164-021-04619-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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14
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Kamalzare M, Ahghari MR, Bayat M, Maleki A. Fe 3O 4@chitosan-tannic acid bionanocomposite as a novel nanocatalyst for the synthesis of pyranopyrazoles. Sci Rep 2021; 11:20021. [PMID: 34625599 PMCID: PMC8501051 DOI: 10.1038/s41598-021-99121-2] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2021] [Accepted: 09/20/2021] [Indexed: 02/08/2023] Open
Abstract
Recently magnetic nanocatalyst has attracted considerable attention because of its unique properties, including high performance, easy separation from the reaction mixture, and recyclability. In this study, a novel magnetic bionanocomposite was synthesized with chitosan and tannic acid as a natural material. The synthesized bionanocatalyst was characterized by essential analysis. Fe3O4@chitosan-tannic acid as a heterogeneous nanocatalyst was successfully applied to synthesize pyranopyrazole and its derivatives by a one-pot four-component reaction of malononitrile, ethyl acetoacetate, hydrazine hydrate, and various aromatic aldehyde. At the end of the reaction, the nanocatalyst was separated from the reaction mixture and was reused several times with no significant decrease in its catalytic performance. Simple purification of products, the ability for recovering and reusing the nanocatalyst, eco-friendliness, high yields of pure products, mild reaction conditions, short reaction time, non-toxicity, economically affordable are some of the advantages of using the fabricated nanocatalyst in the synthesis of pyranopyrazole.
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Affiliation(s)
- Maryam Kamalzare
- Department of Chemistry, Faculty of Science, Imam Khomeini International University, Qazvin, Iran
- Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology, Tehran, 16846-13114, Iran
| | - Mohammad Reza Ahghari
- Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology, Tehran, 16846-13114, Iran
| | - Mohammad Bayat
- Department of Chemistry, Faculty of Science, Imam Khomeini International University, Qazvin, Iran.
| | - Ali Maleki
- Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology, Tehran, 16846-13114, Iran.
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15
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Ganta RK, Kerru N, Maddila S, Jonnalagadda SB. Advances in Pyranopyrazole Scaffolds' Syntheses Using Sustainable Catalysts-A Review. Molecules 2021; 26:3270. [PMID: 34071629 PMCID: PMC8199150 DOI: 10.3390/molecules26113270] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Revised: 05/23/2021] [Accepted: 05/26/2021] [Indexed: 11/17/2022] Open
Abstract
Heterogeneous catalysis plays a crucial role in many chemical processes, including advanced organic preparations and the design and synthesis of new organic moieties. Efficient and sustainable catalysts are vital to ecological and fiscal viability. This is why green multicomponent reaction (MCR) approaches have gained prominence. Owing to a broad range of pharmacological applications, pyranopyrazole syntheses (through the one-pot strategy, employing sustainable heterogeneous catalysts) have received immense attention. This review aimed to emphasise recent developments in synthesising nitrogen-based fused heterocyclic ring frameworks, exploring diverse recyclable catalysts. The article focused on the synthetic protocols used between 2010 and 2020 using different single, bi- and tri-metallic materials and nanocomposites as reusable catalysts. This review designated the catalysts' efficacy and activity in product yields, reaction time, and reusability. The MCR green methodologies (in conjunction with recyclable catalyst materials) proved eco-friendly and ideal, with a broad scope that could feasibly lead to advancements in organic synthesis.
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Affiliation(s)
- Ravi Kumar Ganta
- Department of Chemistry, GITAM Institute of Sciences, GITAM University, Visakhapatnam 530045, India; (R.K.G.); (S.M.)
| | - Nagaraju Kerru
- Department of Chemistry, GITAM School of Science, Bengaluru Campus, GITAM University, Karnataka 561203, India;
- School of Chemistry & Physics, Westville Campus, University of KwaZulu-Natal, Chiltern Hills, Durban 4000, South Africa
| | - Suresh Maddila
- Department of Chemistry, GITAM Institute of Sciences, GITAM University, Visakhapatnam 530045, India; (R.K.G.); (S.M.)
- School of Chemistry & Physics, Westville Campus, University of KwaZulu-Natal, Chiltern Hills, Durban 4000, South Africa
| | - Sreekantha B. Jonnalagadda
- School of Chemistry & Physics, Westville Campus, University of KwaZulu-Natal, Chiltern Hills, Durban 4000, South Africa
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16
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Affiliation(s)
- Sana Sikandar
- Department of Chemistry Government College University Faisalabad Faisalabad Pakistan
| | - Ameer Fawad Zahoor
- Department of Chemistry Government College University Faisalabad Faisalabad Pakistan
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17
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Bakhotmah DA, Ali TE, Assiri MA, Yahia IS. Synthesis of Some Novel 2-{Pyrano[2,3- c]Pyrazoles-4-Ylidene}Malononitrile Fused with Pyrazole, Pyridine, Pyrimidine, Diazepine, Chromone, Pyrano[2,3- c]Pyrazole and Pyrano[2,3- d]Pyrimidine Systems as Anticancer Agents. Polycycl Aromat Compd 2020. [DOI: 10.1080/10406638.2020.1827445] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Dina A. Bakhotmah
- Department of Chemistry, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Tarik E. Ali
- Department of Chemistry, Faculty of Science, King Khalid University, Abha, Saudi Arabia
- Department of Chemistry, Faculty of Education, Ain Shams University, Roxy, Cairo, Egypt
| | - Mohammed A. Assiri
- Department of Chemistry, Faculty of Science, King Khalid University, Abha, Saudi Arabia
| | - Ibrahim S. Yahia
- Research Center for Advanced Materials Science, King Khalid University, Abha, Saudi Arabia
- Department of Physics, Faculty of Science, King Khalid University, Abha, Saudi Arabia
- Department of Physics, Faculty of Education, Ain Shams University, Cairo, Egypt
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18
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Dhakar A, Rajput A, Khanum G, Agarwal DD. SLS-catalyzed Multi-component One-pot Reactions for the Convenient Synthesis of Spiro[indoline-3,4’-pyrano [2,3-c]pyrazole] Derivatives. CURRENT ORGANOCATALYSIS 2020. [DOI: 10.2174/2213337207999200910103325] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Background,Objective: :
spiro[indoline-3,4′-pyrano[2,3-c]pyrazoles] derivatives are an important heterocyclic
compounds. These compounds shows wide range of biological properties and exhibits varied pharmaceutical applications.
Pyranopyrazoles, which are basically fused heterocyclic compounds and act as vasodilators, hypertensive, hypoglycaemic,
and anticancer agents.
Methods:
An efficient and micelle-promoted surfactant catalyzed synthesis of spiro[indoline-3,4′-pyrano[2,3-c]pyrazoles]
derivatives have been achieved via one-pot four-component reaction of hydrazine hydrate (phenyl hydrazine), ethyl acetoacetate, malononitrile (ethyl cyanoacetate) and isatin under thermal conditions (at 60°C) in water as a solvent.
Results:
Sodium lauryl sulphate (SLS) used has been found to be an efficient and green catalyst. The compounds reported
during this work were obtained in excellent yield, in a short duration of time and ease of work up. They were purified by
recrystalization from ethanol, and also the synthesized compounds were characterized by various spectroscopic techniques.
Conclusion:
The method offers several advantages such as safe, cost-effective and catalyst easily recovered and reused
for a minimum of five cycles, that confirms its good stability. Short reaction times, high yield and usage of eco-friendly
catalyst and solvent are the key features of this methodology.
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Affiliation(s)
- Archana Dhakar
- SOS in Chemistry, Jiwaji University, Gwalior (M.P.) 474011, India
| | - Archana Rajput
- SOS in Chemistry, Jiwaji University, Gwalior (M.P.) 474011, India
| | - Ghazala Khanum
- SOS in Chemistry, Jiwaji University, Gwalior (M.P.) 474011, India
| | - Dau D. Agarwal
- SOS in Chemistry, Jiwaji University, Gwalior (M.P.) 474011, India
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19
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Silver nanoparticles-decorated Preyssler functionalized cellulose biocomposite as a novel and efficient catalyst for the synthesis of 2-amino-4H-pyrans and spirochromenes. Sci Rep 2020; 10:14540. [PMID: 32884026 PMCID: PMC7471288 DOI: 10.1038/s41598-020-70738-z] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2020] [Accepted: 07/14/2020] [Indexed: 11/30/2022] Open
Abstract
Silver nanoparticles-decorated Preyssler functionalized cellulose biocomposite (PC/AgNPs) was prepared and fully characterized by FTIR, UV–vis, SEM, and TEM techniques. The preparation of PC/AgNPs was studied systematically to optimize the processing parameters by Taguchi method using the amount of PC, reaction temperature, concentration of silver nitrate and pH of medium. Taguchi’s L9 orthogonal (4 parameters, 4 level) was used for the experimental design. The SEM analysis confirmed the presence of the Preyssler as a white cloud as well as spherical AgNPs on the surface of cellulose. The formation of AgNPs on the surface was observed by changing of the color from yellow to deep brown and confirmed by UV–vis spectroscopy. The best yield of AgNPs forming was obtained in pH 12.5 at 80 ºC in 20 min. TEM analysis confirmed the formation of spherical AgNPs with a size of 50 nm, at the 1% wt. loading of Preyssler. This easily prepared PC/AgNPs was successfully employed as an efficient, green, and reusable catalyst in the synthesis of a wide range of 2-amino-4H-pyran and functionalized spirochromene derivatives via a one-pot, multicomponent reaction. The chief merits realized for this protocol were the utilization of commercially available or easily accessible starting materials, operational simplicity, facile work-up procedure, obtaining of high to excellent yields of the products and being done under green conditions. The catalyst could be easily separated from the reaction mixture and reused several times without observing any appreciable loss in its efficiency.
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20
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Dhameliya TM, Donga HA, Vaghela PV, Panchal BG, Sureja DK, Bodiwala KB, Chhabria MT. A decennary update on applications of metal nanoparticles (MNPs) in the synthesis of nitrogen- and oxygen-containing heterocyclic scaffolds. RSC Adv 2020; 10:32740-32820. [PMID: 35516511 PMCID: PMC9056690 DOI: 10.1039/d0ra02272a] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Accepted: 08/12/2020] [Indexed: 12/15/2022] Open
Abstract
Heterocycles have been found to be of much importance as several nitrogen- and oxygen-containing heterocycle compounds exist amongst the various USFDA-approved drugs. Because of the advancement of nanotechnology, nanocatalysis has found abundant applications in the synthesis of heterocyclic compounds. Numerous nanoparticles (NPs) have been utilized for several organic transformations, which led us to make dedicated efforts for the complete coverage of applications of metal nanoparticles (MNPs) in the synthesis of heterocyclic scaffolds reported from 2010 to 2019. Our emphasize during the coverage of catalyzed reactions of the various MNPs such as Ag, Au, Co, Cu, Fe, Ni, Pd, Pt, Rh, Ru, Si, Ti, and Zn has not only been on nanoparticles catalyzed synthetic transformations for the synthesis of heterocyclic scaffolds, but also provide an inherent framework for the reader to select a suitable catalytic system of interest for the synthesis of desired heterocyclic scaffold.
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Affiliation(s)
- Tejas M Dhameliya
- L. M. College of Pharmacy Navrangpura Ahmedabad 380 009 Gujarat India +91 79 2630 4865 +91 79 2630 2746
| | - Hiren A Donga
- L. M. College of Pharmacy Navrangpura Ahmedabad 380 009 Gujarat India +91 79 2630 4865 +91 79 2630 2746
| | - Punit V Vaghela
- L. M. College of Pharmacy Navrangpura Ahmedabad 380 009 Gujarat India +91 79 2630 4865 +91 79 2630 2746
| | - Bhoomi G Panchal
- L. M. College of Pharmacy Navrangpura Ahmedabad 380 009 Gujarat India +91 79 2630 4865 +91 79 2630 2746
| | - Dipen K Sureja
- L. M. College of Pharmacy Navrangpura Ahmedabad 380 009 Gujarat India +91 79 2630 4865 +91 79 2630 2746
| | - Kunjan B Bodiwala
- L. M. College of Pharmacy Navrangpura Ahmedabad 380 009 Gujarat India +91 79 2630 4865 +91 79 2630 2746
| | - Mahesh T Chhabria
- L. M. College of Pharmacy Navrangpura Ahmedabad 380 009 Gujarat India +91 79 2630 4865 +91 79 2630 2746
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21
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Jones LO, Mosquera MA, Jiang Y, Weiss EA, Schatz GC, Ratner MA. Thermodynamics and Mechanism of a Photocatalyzed Stereoselective [2 + 2] Cycloaddition on a CdSe Quantum Dot. J Am Chem Soc 2020; 142:15488-15495. [DOI: 10.1021/jacs.0c07130] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Leighton O. Jones
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - Martín A. Mosquera
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - Yishu Jiang
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - Emily A. Weiss
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
- Center for Bio-Inspired Energy Science (CBES), Northwestern University, Evanston, Illinois 60208, United States
| | - George C. Schatz
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
- Center for Bio-Inspired Energy Science (CBES), Northwestern University, Evanston, Illinois 60208, United States
- Institute for Catalysis in Energy Processes (ICEP), Northwestern University, Evanston, Illinois 60208, United States
| | - Mark A. Ratner
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
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22
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Ali TE, Bakhotmah DA, Assiri MA. Synthesis of some new functionalized pyrano[2,3-c]pyrazoles and pyrazolo[4′,3′:5,6] pyrano[2,3-d]pyrimidines bearing a chromone ring as antioxidant agents. SYNTHETIC COMMUN 2020. [DOI: 10.1080/00397911.2020.1800744] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Tarik E. Ali
- Department of Chemistry, Faculty of Science, King Khalid University, Abha, Saudi Arabia
- Department of Chemistry, Faculty of Education, Ain Shams University, Roxy, Egypt
| | - Dina A. Bakhotmah
- Department of Chemistry, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Mohammed A. Assiri
- Department of Chemistry, Faculty of Science, King Khalid University, Abha, Saudi Arabia
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23
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One-Pot Access to Diverse Functionalized Pyran Annulated Heterocyclic Systems Using SCMNPs@BPy-SO3H as a Novel Magnetic Nanocatalyst. BULLETIN OF CHEMICAL REACTION ENGINEERING & CATALYSIS 2020. [DOI: 10.9767/bcrec.15.2.6693.348-366] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The SCMNPs@BPy-SO3H catalyst was prepared and characterized using Fourier Transform Infrared Spectroscopy (FTIR), Thermogravimetric Analysis (TGA), Vibrating Sample Magnetometry (VSM), Energy Dispersive X-ray Spectroscopy (EDX), X-ray Diffraction (XRD), and Scanning Electron Microscopy (SEM). Afterwards, its capability was efficiently used to promote the one-pot, three-component synthesis of pyrano[2,3-c]pyrazole and 2-amino-3-cyano-pyrano[3,2-c]chromen-5(4H)-one derivatives. The strategy resulted in the desired products with excellent yields and short reaction times. The SCMNPs@BPy-SO3H catalyst was readily recovered using a permanent magnetic field and it was reused in six runs with a slight decrease in catalytic activity. Copyright © 2020 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).
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Nagasundaram N, Kokila M, Sivaguru P, Santhosh R, Lalitha A. SO3H@carbon powder derived from waste orange peel: An efficient, nano-sized greener catalyst for the synthesis of dihydropyrano[2,3-c]pyrazole derivatives. ADV POWDER TECHNOL 2020. [DOI: 10.1016/j.apt.2020.01.012] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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Hosseini Mohtasham N, Gholizadeh M. Nano silica extracted from horsetail plant as a natural silica support for the synthesis of H3PW12O40 immobilized on aminated magnetic nanoparticles (Fe3O4@SiO2-EP-NH-HPA): a novel and efficient heterogeneous nanocatalyst for the green one-pot synthesis of pyrano[2,3-c]pyrazole derivatives. RESEARCH ON CHEMICAL INTERMEDIATES 2020. [DOI: 10.1007/s11164-020-04133-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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Bakthadoss M, Surendar M. Cascade annulation reaction (CAR): highly diastereoselective synthesis of pyranopyrazole scaffolds. RSC Adv 2020; 10:19003-19007. [PMID: 35518344 PMCID: PMC9053953 DOI: 10.1039/d0ra03400b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Accepted: 05/11/2020] [Indexed: 12/26/2022] Open
Abstract
An unprecedented domino protocol for the novel synthesis of highly diverse and functionalized tetrahydro pyranopyrazole scaffolds using chalcone epoxide has been reported for the first time. This synthetic protocol generates three consecutive stereogenic centres in a highly diastereoselective manner with the formation of vicinal diol and a quaternary carbon centre. A wide range of substrates were utilized for the scope of this methodology and provided very good yields of pyranopyrazoles. The pyranopyrazoles were also transformed into densely functionalized tetrasubstituted olefins. An unprecedented domino protocol for the novel synthesis of highly diverse and functionalized tetrahydro pyranopyrazole scaffolds using chalcone epoxide has been reported.![]()
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Affiliation(s)
| | - Manickam Surendar
- Department of Chemistry
- Pondicherry University
- Pondicherry 605014
- India
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Redouane MA, Khiri-Meribout N, Benzerka S, Debache A. [DMImd-DMP]: A highly efficient and reusable catalyst for the synthesis of 4H-benzo[b]pyran derivatives. HETEROCYCL COMMUN 2019. [DOI: 10.1515/hc-2019-0025] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
AbstractA series of substituted 4H-pyrans derivatives were synthesized by a one-pot, multi-component reaction of aromatic aldehydes, malononitrile, and pyrazolone derivatives or active methylene carbonyl compounds such as dimedone, in the presence of 1,3-dimethyl imidazolium dimethyl phosphate [DMImd-DMP] as a catalyst in aqueous ethanol. Recyclability of the catalyst, high yields, simple product isolation and high atom economy are the noteworthy aspects of this protocol.
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Affiliation(s)
- Mohamed Abdenour Redouane
- Laboratory of Synthesis of Molecules with Biological Interest, Mentouri-Constantine 1 University, 25000Constantine, Algeria
| | - Naima Khiri-Meribout
- Laboratory of Synthesis of Molecules with Biological Interest, Mentouri-Constantine 1 University, 25000Constantine, Algeria
| | - Saida Benzerka
- Laboratory of Synthesis of Molecules with Biological Interest, Mentouri-Constantine 1 University, 25000Constantine, Algeria
| | - Abdelmadjid Debache
- Laboratory of Synthesis of Molecules with Biological Interest, Mentouri-Constantine 1 University, 25000Constantine, Algeria
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Maddila S, Gorle S, Shabalala S, Oyetade O, Maddila SN, Lavanya P, Jonnalagadda SB. Ultrasound mediated green synthesis of pyrano[2,3-c]pyrazoles by using Mn doped ZrO2. ARAB J CHEM 2019. [DOI: 10.1016/j.arabjc.2016.04.016] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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29
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Alpha-Casein: an efficient, green, novel, and eco-friendly catalyst for one-pot multi-component synthesis of bis (pyrazol-5-ols), dihydro-pyrano[2,3-c]pyrazoles and spiropyranopyrazoles in an environmentally benign manner. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2019. [DOI: 10.1007/s13738-019-01641-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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30
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Hamrahian SA, Salehzadeh S, Rakhtshah J, Haji babaei F, Karami N. Preparation, characterization and catalytic application of molybdenum Schiff-base complex immobilized on silica-coated Fe3
O4
as a reusable catalyst for the synthesis of pyranopyrazole derivatives. Appl Organomet Chem 2018. [DOI: 10.1002/aoc.4723] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
| | - Sadegh Salehzadeh
- Faculty of Chemistry, Bu-Ali Sina University; Hamedan 6517838683 Iran
| | - Jamshid Rakhtshah
- Faculty of Chemistry, Bu-Ali Sina University; Hamedan 6517838683 Iran
| | | | - Niloofar Karami
- Faculty of Chemistry, Bu-Ali Sina University; Hamedan 6517838683 Iran
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31
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Yarie M, Zolfigol MA, Baghery S, Alonso DA, Khoshnood A, Bayat Y, Asgari A. Triphenyl(3-sulfopropyl)phosphonium trinitromethanide as a novel nanosized molten salt: Catalytic activity at the preparation of dihydropyrano[2,3-c]pyrazoles. J Mol Liq 2018. [DOI: 10.1016/j.molliq.2018.09.054] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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32
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Konakanchi R, Nishtala VB, Kankala S, Kotha LR. Zn(ANA)2Cl2 complex as efficient catalyst for the synthesis of dihydropyrano[2,3-c]pyrazoles in aqueous medium via one-pot multicomponent reaction: a green approach. SYNTHETIC COMMUN 2018. [DOI: 10.1080/00397911.2018.1506034] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Ramaiah Konakanchi
- Department of Chemistry, National Institute of Technology, Warangal, Telangana, India
| | | | | | - Laxma Reddy Kotha
- Department of Chemistry, National Institute of Technology, Warangal, Telangana, India
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33
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Konakanchi R, Gondru R, Nishtala VB, Kotha LR. NaF-catalyzed efficient one-pot synthesis of dihydropyrano[2,3-c]pyrazoles under ultrasonic irradiation via MCR approach. SYNTHETIC COMMUN 2018. [DOI: 10.1080/00397911.2018.1479758] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Ramaiah Konakanchi
- Department of Chemistry, National Institute of Technology, Warangal, Telangana State, India
| | - Ramesh Gondru
- Department of Chemistry, National Institute of Technology, Warangal, Telangana State, India
| | | | - Laxma Reddy Kotha
- Department of Chemistry, National Institute of Technology, Warangal, Telangana State, India
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Design, Synthesis, Anticancer Evaluation and Docking Studies of Novel Heterocyclic Derivatives Obtained via Reactions Involving Curcumin. Molecules 2018; 23:molecules23061398. [PMID: 29890691 PMCID: PMC6099980 DOI: 10.3390/molecules23061398] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2018] [Revised: 05/24/2018] [Accepted: 06/02/2018] [Indexed: 12/20/2022] Open
Abstract
Curcumin, a widely utilized flavor and coloring agent in food, has been shown to demonstrate powerful antioxidant, antitumor promoting and anti-inflammatory properties in vitro and in vivo. In the present work, synthesis of new heterocyclic derivatives based on Curcumin was studied. Compound 3 was synthesized via the reaction of furochromone carbaldehyde (1) with Curcumin (2) using pipredine as catalyst. Also, novel, 4,9-dimethoxy-5H-furo [3, 2-g] chromen-5-one derivatives 4a–d, 6a–d, 7, 8a–d, 9 and 10 were synthesized by the reactions of furochromone carbaldehyde (1) with different reagents (namely: appropriate amine 3a–d, appropriate hydrazine 5a–d, hydroxylamine hydrochloride, urea/thiourea, malononitrile, malononitrile with hydrazine hydrate). The structure of the synthesized products had been confirmed from their spectroscopic data (IR, 1H-NMR, 13C-NMR and mass spectra). In the present investigation, the newly synthesized products were screened using the MTT colorimetric assay for their in vitro inhibition capacity in two human cancer cell lines (hepatocellular carcinoma (HEPG2) and breast cancer (MCF-7) as well as the normal cell line (human normal melanocyte, HFB4) in comparison to the known anticancer drugs: 5-flurouracil and doxorubicin. The anticancer activity results indicated that the synthesized products 4c and 8b showed growth inhibition activity against HEPG2 cell line and synthesized products 4b and 8a showed growth inhibition activity against MCF-7, but with varying intensities in comparison to the known anticancer drugs, 5-flurouracil and doxorubicin. Cyclin dependent kinase 2 (CDK2), a major cell cycle protein, was identified as a potential molecular target of Curcumin. Furthermore, Curcumin induced G1 cell cycle arrest, which is regulated by CDK2 in cancer cells. Therefore, we used molecular modelling to study in silico the possible inhibitory effect of CDK2 by Curcumin derivatives as a possible mechanism of these compounds as anticancer agents. The molecular docking study revealed that compounds 4b, 8a and 8b were the most effective compounds in inhibiting CDk2, and, this result was in agreement with cytotoxicity assay.
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Liu T, Lai YH, Yu YQ, Xu DZ. A facile and efficient procedure for one-pot four-component synthesis of polysubstituted spiro pyrano[2,3-c]pyrazole and spiro 1,4-dihydropyridine catalyzed by a Dabco-based ionic liquid under mild conditions. NEW J CHEM 2018. [DOI: 10.1039/c7nj03967k] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Spiro pyrano[2,3-c]pyrazoles and spiro 1,4-dihydropyridines were obtained in high yields from different amine components under Dabco-based ionic liquid catalysis.
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Affiliation(s)
- Tong Liu
- National Engineering Research Center of Pesticide (Tianjin)
- State Key Laboratory and Institute of Elemento-Organic Chemistry
- College of Chemistry
- Nankai University
- Tianjin 300071
| | - Yi-Huan Lai
- National Engineering Research Center of Pesticide (Tianjin)
- State Key Laboratory and Institute of Elemento-Organic Chemistry
- College of Chemistry
- Nankai University
- Tianjin 300071
| | - Ya-Qin Yu
- Key Laboratory for Water Environment and Resources
- Tianjin Normal University
- Tianjin
- People's Republic of China
| | - Da-Zhen Xu
- National Engineering Research Center of Pesticide (Tianjin)
- State Key Laboratory and Institute of Elemento-Organic Chemistry
- College of Chemistry
- Nankai University
- Tianjin 300071
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36
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Novel organometallic nanomagnetic catalyst for multicomponent synthesis of spiroindoline derivatives. RESEARCH ON CHEMICAL INTERMEDIATES 2017. [DOI: 10.1007/s11164-017-3228-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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37
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Fatahpour M, Noori Sadeh F, Hazeri N, Maghsoodlou MT, Hadavi MS, Mahnaei S. Ag/TiO 2 nano-thin films as robust heterogeneous catalyst for one-pot, multi-component synthesis of bis (pyrazol-5-ol) and dihydropyrano[2,3 -c ]pyrazole analogs. JOURNAL OF SAUDI CHEMICAL SOCIETY 2017. [DOI: 10.1016/j.jscs.2017.05.009] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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38
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Saravana Mani K, Rajendran SP. L-Proline catalyzed three component synthesis of pyrano[2,3-c]pyrazole-5-carbonitrile derivatives and in vitro antimalarial evaluation. SYNTHETIC COMMUN 2017. [DOI: 10.1080/00397911.2017.1362437] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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39
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Ghorbani‐Vaghei R, Izadkhah V. Preparation and characterization of hexamethylenetetramine‐functionalized magnetic nanoparticles and their application as novel catalyst for the synthesis of pyranopyrazole derivatives. Appl Organomet Chem 2017. [DOI: 10.1002/aoc.4025] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
| | - Vida Izadkhah
- Faculty of ChemistryBu‐Ali Sina University Hamedan 6517838683 Iran
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40
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Aspirin: an efficient catalyst for synthesis of bis (pyrazol-5-ols), dihydropyrano[2,3-c]pyrazoles and spiropyranopyrazoles in an environmentally benign manner. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2017. [DOI: 10.1007/s13738-017-1133-x] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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41
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Liu T, Li CB, Yu YQ, Xu DZ. An Efficient Four-Component Reaction for the Rapid Synthesis of Highly Functionalized Pyrano[2,3-c
]pyrazoles Catalyzed by [Dabco-H][AcO] Ionic Liquid Under Mild Condition. ChemistrySelect 2017. [DOI: 10.1002/slct.201700168] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Tong Liu
- National Engineering Research Center of Pesticide (Tianjin); State Key Laboratory and Institute of Elemento-Organic Chemistry; Nankai University; Tianjin 300071 China
| | - Cheng-Bin Li
- National Engineering Research Center of Pesticide (Tianjin); State Key Laboratory and Institute of Elemento-Organic Chemistry; Nankai University; Tianjin 300071 China
| | - Ya-Qin Yu
- Key Laboratory for Water Environment and Resources; Tianjin Normal University; Tianjin 300387 China
| | - Da-Zhen Xu
- National Engineering Research Center of Pesticide (Tianjin); State Key Laboratory and Institute of Elemento-Organic Chemistry; Nankai University; Tianjin 300071 China
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42
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Ghorbani-Vaghei R, Malaekehpoor SM. N-Bromosulfonamides catalyzed synthesis of new spiro [indoline-3,4 '-pyrano[2,3- c]pyrazole] derivatives. J Heterocycl Chem 2017. [DOI: 10.1002/jhet.2605] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Ramin Ghorbani-Vaghei
- Department of Organic Chemistry, Faculty of Chemistry; Bu-Ali Sina University; 65174 Hamedan Iran
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43
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Synthesis, characterization and molecular docking studies of substituted 4-coumarinylpyrano[2,3-c]pyrazole derivatives as potent antibacterial and anti-inflammatory agents. Eur J Med Chem 2017; 125:101-116. [DOI: 10.1016/j.ejmech.2016.09.021] [Citation(s) in RCA: 93] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2016] [Revised: 08/22/2016] [Accepted: 09/07/2016] [Indexed: 01/03/2023]
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44
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Zhou CF, Li JJ, Su WK. Morpholine triflate promoted one-pot, four-component synthesis of dihydropyrano[2,3-c]pyrazoles. CHINESE CHEM LETT 2016. [DOI: 10.1016/j.cclet.2016.05.010] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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45
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Huang X, Li Z, Wang D, Li Y. Bovine serum albumin: An efficient and green biocatalyst for the one-pot four-component synthesis of pyrano[2,3-c]pyrazoles. CHINESE JOURNAL OF CATALYSIS 2016. [DOI: 10.1016/s1872-2067(15)61088-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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46
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Using magnetized water as a solvent for a green, catalyst-free, and efficient protocol for the synthesis of pyrano[2,3-c]pyrazoles and pyrano[4′,3′:5,6]pyrazolo [2,3-d]pyrimidines. RESEARCH ON CHEMICAL INTERMEDIATES 2016. [DOI: 10.1007/s11164-016-2680-y] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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47
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Fruit juice of Citrus limon as a biodegradable and reusable catalyst for facile, eco-friendly and green synthesis of 3,4-disubstituted isoxazol-5(4H)-ones and dihydropyrano[2,3-c]-pyrazole derivatives. RESEARCH ON CHEMICAL INTERMEDIATES 2016. [DOI: 10.1007/s11164-016-2553-4] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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48
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Swami S, Agarwala A, Shrivastava R. Sulfonic acid functionalized silica-coated CuFe2O4 core–shell nanoparticles: an efficient and magnetically separable heterogeneous catalyst for the synthesis of 2-pyrazole-3-amino-imidazo-fused polyheterocycles. NEW J CHEM 2016. [DOI: 10.1039/c6nj02264b] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Synthesis of easily separable magnetic core–shell nanoparticles and their efficient use as catalyst in a multicomponent reaction.
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Affiliation(s)
- Suman Swami
- Department of Chemistry
- Manipal University Jaipur
- Jaipur-303007
- India
| | - Arunava Agarwala
- Department of Chemistry
- Manipal University Jaipur
- Jaipur-303007
- India
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A green and one-pot synthesis of a library of 1,4-dihydropyrano[2,3-c]-pyrazole-5-carbonitrile derivatives using thiourea dioxide (TUD) as an efficient and reusable organocatalyst. RESEARCH ON CHEMICAL INTERMEDIATES 2015. [DOI: 10.1007/s11164-015-2308-7] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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50
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Screening of a library of 4-aryl/heteroaryl-4H-fused pyrans for xanthine oxidase inhibition: synthesis, biological evaluation and docking studies. Med Chem Res 2015. [DOI: 10.1007/s00044-015-1382-0] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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