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Zenebe FC, Taddesse AM, Sivasubramanian M, G. NB. Highly efficient CdS/CeO 2/Ag 3PO 4 nanocomposite as novel heterogenous catalyst for Knoevenagel condensation and acetylation reactions. Heliyon 2024; 10:e31798. [PMID: 38841498 PMCID: PMC11152677 DOI: 10.1016/j.heliyon.2024.e31798] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2024] [Revised: 05/21/2024] [Accepted: 05/22/2024] [Indexed: 06/07/2024] Open
Abstract
In light of environmental and economic concerns, the use of heterogeneous catalysts that can function under gentler reaction conditions has recently become popular. In this study by using the precipitation method, CdS/CeO2/Ag3PO4 ternary nanocomposites with varied molar proportions of CdS:CeO2/Ag3PO4 were produced. The catalysts' surface functional groups; morphology and crystal structures were examined using FTIR, SEM-EDX and XRD respectively. The catalytic efficiency of all synthesized nanomaterials was tested on a model Knoevenagel condensation reaction. For the best catalyst, selected from the screening, the optimization of reaction conditions such as the solvent, catalyst load, concentration of reagents such as malononitrile/acetic anhydride, and temperature. The ternary nanocomposite CdS/CeO2/Ag3PO4 (4:1) displayed higher catalytic activity (95.4 ± 3.2 %) than the rest of the nanomaterials prepared. Thus, the ternary nanocomposite CdS/CeO2/Ag3PO4 with 4:1 mol ratio with optimized reaction conditions was used to check the substrate scope of Knoevenagel condensation and acetylation reaction. The synthesized Knoevenagel condensation and acetylation reaction products were also characterized by proton and carbon NMR for their structure determination. The nanocomposite's reusability was carried out and only 7.5 ± 2 % decrement was witnessed after four runs and 23.3 % after the fifth run. and this indicates the potential application of the catalyst to organic reactions. Furthermore, we have proposed the possible catalytic mechanisms for both organic reactions.
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Affiliation(s)
| | - Abi M. Taddesse
- Department of Chemistry, Haramaya University, Haramaya, Ethiopia
| | | | - Neelaiah Babu G.
- Department of Chemistry, Haramaya University, Haramaya, Ethiopia
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2
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Husseiny EM, Abulkhair HS, Saleh A, Altwaijry N, Zidan RA, Abdulrahman FG. Molecular overlay-guided design of new CDK2 inhibitor thiazepinopurines: Synthesis, anticancer, and mechanistic investigations. Bioorg Chem 2023; 140:106789. [PMID: 37611530 DOI: 10.1016/j.bioorg.2023.106789] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Revised: 08/08/2023] [Accepted: 08/14/2023] [Indexed: 08/25/2023]
Abstract
Adopting the molecular overlay approach, three novel sets of thiazepinopurines with expected cytotoxicity and CDK2 inhibition potential were designed and synthesized. This was accomplished through the heteroannelation of purines, for the first time, with thiazepine. The obtained thiazepinopurines derivatives were assessed for their cytotoxicity toward tumor cells of three different types, HepG2, MCF-7, and PC-3 as well as one normal cell (WI38). Among the studied compounds, 3b and 3c exhibited significant antiproliferative activity against tumor cells presenting IC50 range of 5.52-17.09 µM in comparison with Roscovitine (9.32-13.82 µM). Additionally, both compounds displayed superior selectivity indices (SI = 3.00-7.15) toward tested cancer cells. The 4-chlorophenyl analog 3b has shown the best selectivity index, and hence it has been subjected to additional investigations to determine its proper mechanistic effect. Accordingly, the CDK2 inhibition potential, apoptosis induction, and cell cycle analysis of MCF-7 were evaluated. Results revealed that this analog displayed a potent CDK2 inhibition potential with an IC50 value of 0.219 µM. Findings also showed that 3b was thought to arrest MCF-7 cell cycle at S phase together with apoptosis induction by the increased expression of Bax, Caspase-8, and -9 markers with a concomitant decrease in Bcl-2 expression. Besides, the probable interaction of 3b with CDK2 binding pocket was investigated by molecular docking.
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Affiliation(s)
- Ebtehal M Husseiny
- Pharmaceutical Organic Chemistry Department, Faculty of Pharmacy (Girls), Al-Azhar University, Nasr City 11754, Cairo, Egypt
| | - Hamada S Abulkhair
- Pharmaceutical Organic Chemistry Department, Faculty of Pharmacy, Al-Azhar University, Nasr City 11884, Cairo, Egypt; Pharmaceutical Chemistry Department, Faculty of Pharmacy, Horus University-Egypt, International Coastal Road, New Damietta 34518, Egypt
| | - Asmaa Saleh
- Department of Pharmaceutical Sciences, College of Pharmacy, Princess Nourah Bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia.
| | - Najla Altwaijry
- Department of Pharmaceutical Sciences, College of Pharmacy, Princess Nourah Bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia
| | - Riham A Zidan
- Department of Biochemistry, Faculty of Pharmacy (Girls), Al-Azhar University, Cairo, Egypt
| | - Fatma G Abdulrahman
- Pharmaceutical Organic Chemistry Department, Faculty of Pharmacy (Girls), Al-Azhar University, Nasr City 11754, Cairo, Egypt
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Kanagare AB, Yadav MR, Katariya AP, Bhagat DS, Dhas AK, Pansare DN, Nagwade PA, Kumar B, Sangshetti JN, Deshmukh SU. Insights into 4,4′‐Arylmethylene‐Bis‐1
H
‐Pyrazol‐5‐Ols Scaffolds: Various Synthetic Routes and Their Applications. ChemistrySelect 2023. [DOI: 10.1002/slct.202204088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Anant B. Kanagare
- Department of Chemistry Deogiri College Aurangabad. 431005 Maharashtra India
| | - M.Sc.Ashok R. Yadav
- Department of Chemistry Deogiri College Aurangabad. 431005 Maharashtra India
| | - Ashishkumar P. Katariya
- Department of Chemistry SAJVPM'S Smt. S. K. Gandhi Arts, Amolak Science & P. H. Gandhi Commerce College Kada, 414202 Beed Maharashtra India
| | - Devidas S. Bhagat
- Department of Forensic Chemistry and Toxicology Government Institute of Forensic Science Aurangabad 431004 Maharashtra India
| | - Ajit K. Dhas
- Department of Chemistry Deogiri College Aurangabad. 431005 Maharashtra India
| | | | - Pratik A. Nagwade
- Department of Chemistry Shri Anand College Pathardi 414102 Maharashtra India
| | - Brajesh Kumar
- Department of Chemistry TATA College, bypass road Chaibasa Jharkhand 833202 India
| | | | - Satish U. Deshmukh
- Department of Chemistry Deogiri College Aurangabad. 431005 Maharashtra India
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4
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Gupta A, Iqbal S, Roohi, Hussain MK, Zaheer MR, Shankar K. Visible Light-Promoted Green and Sustainable Approach for One-Pot Synthesis of 4,4'-(Arylmethylene)bis(1H-pyrazol-5-ols), In Vitro Anticancer Activity, and Molecular Docking with Covid-19 M pro. ACS OMEGA 2022; 7:34583-34598. [PMID: 36188265 PMCID: PMC9520760 DOI: 10.1021/acsomega.2c04506] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Accepted: 09/02/2022] [Indexed: 08/25/2023]
Abstract
A visible light-promoted, efficient, green, and sustainable strategy has been adopted to unlatch a new pathway toward the synthesis of a library of medicinally important 4,4'-(arylmethylene)bis(1H-pyrazol-5-ols) moieties using substituted aromatic aldehydes and sterically hindered 3-methyl-1-phenyl-2-pyrazoline-5-one in excellent yield. This reaction shows high functional group tolerance and provides a cost-effective and catalyst-free protocol for the quick synthesis of biologically active compounds from readily available substrates. Synthesized compounds were characterized by spectroscopic techniques such as IR, 1HNMR, 13CNMR, and single-crystal XRD analysis. All the synthesized compounds were evaluated for their antiproliferative activities against a panel of five different human cancer cell lines and compared with Tamoxifen using MTT assay. Compound 3m exhibited maximum antiproliferative activity and was found to be more active as compared to Tamoxifen against both the MCF-7 and MDA-MB-231 cell lines with an IC50 of 5.45 and 9.47 μM, respectively. A molecular docking study with respect to COVID-19 main protease (Mpro) (PDB ID: 6LU7) has also been carried out which shows comparatively high binding affinity of compounds 3f and 3g (-8.3 and -8.8 Kcal/mole, respectively) than few reported drugs such as ritonavir, remdesivir, ribacvirin, favipiravir, hydroxychloroquine, chloroquine, and olsaltamivir. Hence, it reveals the possibility of these compounds to be used as effective COVID-19 inhibitors.
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Affiliation(s)
- Anamika Gupta
- Department
of Chemistry, Aligarh Muslim University, Aligarh202002, Uttar Pradesh, India
| | - Safia Iqbal
- Department
of Chemistry, Aligarh Muslim University, Aligarh202002, Uttar Pradesh, India
| | - Roohi
- Protein
Research Laboratory, Department of Bioengineering, Integral University, Lucknow226026, Uttar Pradesh, India
| | - Mohd. Kamil Hussain
- Department
of Chemistry, Govt. Raza PG College, Rampur24901, Uttar Pradesh, India
| | - Mohd. Rehan Zaheer
- Department
of Chemistry, R.M.P.S.P. Girls Post Graduate
College, Basti272301, Uttar Pradesh, India
| | - Krapa Shankar
- Sun
Pharmaceutical industries Ltd, Sarhaul, Sector 18, Gurgaon, Haryana122015, India
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5
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Elbadawy HA, Abd‐El‐Nabey BA, Ali AE, Elsayed EH. The development of an unexpected Cu(I)‐pyrazolo pyrimidine‐based complex: Synthesis, spectroscopic characterizations, and biological activity. Appl Organomet Chem 2022. [DOI: 10.1002/aoc.6843] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Hemmat A. Elbadawy
- Chemistry Department, Faculty of Science Alexandria University Alexandria Egypt
| | | | - Ali El‐Dissouky Ali
- Chemistry Department, Faculty of Science Alexandria University Alexandria Egypt
| | - Eman Hassan Elsayed
- Chemistry Department, Faculty of Science Alexandria University Alexandria Egypt
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Padmaja P, Reddy S, Ugale VG, Reddy PN. Arylidenemalononitriles as Versatile Synthons in Heterocyclic Synthesis. Curr Org Synth 2022; 19:591-615. [PMID: 35023458 DOI: 10.2174/1385272826666220113100746] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2021] [Revised: 12/03/2021] [Accepted: 12/20/2021] [Indexed: 11/22/2022]
Abstract
BACKGROUND Arylidenemalononitriles are valuable synthons for the construction of a variety of novel complex heterocyclic motifs, fused heterocycle derivatives and spirocyclic compounds. They are versatile chemical intermediates and have increasing applications in industry, agriculture, medicine, biological science. OBJECTIVE The aim of this review is to highlight the preparation methods and reactions of arylidenemalononitriles in the synthesis of various heterocyclic compounds. CONCLUSION In this review, we have presented the application of arylidenemalononitriles to construct a variety of heterocycles. Various catalysts for the preparation of arylidnemalononitriles have been described.
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Affiliation(s)
- Pannala Padmaja
- Fluoro & Agrochemicals, CSIR-Indian Institute of Chemical Technology, Hyderabad, India
| | - Subba Reddy
- Fluoro & Agrochemicals, CSIR-Indian Institute of Chemical Technology, Hyderabad, India
| | - Vinod G Ugale
- Department of Pharmaceutical Chemistry, R. C. Patel Institute of Pharmaceutical Education and Research, Shirpur- 425405, Maharashtra, India
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7
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Sadeghpour M, Olyaei A. Recent advances in the synthesis of bis(pyrazolyl)methanes and their applications. RESEARCH ON CHEMICAL INTERMEDIATES 2021. [DOI: 10.1007/s11164-021-04592-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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8
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Patil PG, Sehlangia S, More DH. Chitosan-SO3H (CTSA) an efficient and biodegradable polymeric catalyst for the synthesis of 4,4′-(arylmethylene)bis(1H-pyrazol-5-ol) and α-amidoalkyl-β-naphthol’s. SYNTHETIC COMMUN 2020. [DOI: 10.1080/00397911.2020.1753078] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Paresh G. Patil
- Department of Chemistry, S.P.D.M. College Shirpur, Shirpur, MS, India
| | - Suman Sehlangia
- School of Basic Sciences, Indian Institute of Technology, Mandi, HP, India
| | - Dhananjay H. More
- School of Chemical Sciences, Kavayitri Bahinabai Chaudhari North Maharashtra University Jalgaon, Jalgaon, MS, India
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9
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Khalifeh R, Shahimoridi R, Rajabzadeh M. Design and Synthesis of Novel Cage like CuFe2O4 Hollow Nanostructure as an Efficient Catalyst for Synthesis of 4,4′-(aryl methylene)bis(3-methyl-1H-pyrazol-5-ol)s. Catal Letters 2019. [DOI: 10.1007/s10562-019-02818-3] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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10
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Emerging Trends in the Syntheses of Heterocycles Using Graphene-based Carbocatalysts: An Update. Top Curr Chem (Cham) 2019; 377:13. [PMID: 31054016 DOI: 10.1007/s41061-019-0238-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2018] [Accepted: 04/16/2019] [Indexed: 01/24/2023]
Abstract
Graphene-based carbocatalysts owing to numerous amazing properties such as large specific surface area, high intrinsic mobility, excellent thermal and electrical conductivities, chemical stability, ease of functionalization, simple method of preparation, effortless recovery and recyclability have gained a superior position amongst the conventional homogeneous and heterogeneous catalysts. In this review, an endeavor has been made to highlight the syntheses of diverse heterocyclic compounds catalyzed by graphene-based catalysts. Further, the study also reveals that all the catalysts could be reused several times without significant loss in their catalytic activity. Additionally, most of the reactions catalyzed by graphene-based carbocatalysts were carried out at ambient temperature and under solvent-free conditions. Thus, the graphene-based catalysts do not merely act as efficient catalysts but also serve as sustainable, green catalysts. This review is divided into various sub-sections, each of which comprehensively describes the preparation of a particular heterocyclic scaffold catalyzed by graphene-derived carbocatalyst in addition to synthesis of graphene oxide and reduced graphene oxide, functionalization, and structural features governing their catalytic properties. Synthesis of heterocycles catalyzed by graphene-based carbocatalysts.
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12
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Wang T, Yu Y, Qing X, Dai C, Wang C. Efficient Preparation of Potassium Arylmethylene-4-(1 H-Pyrazol-5-ol)-4′-(1 H-Pyrazol-5-Olate) Derivatives via a Four-Component Reaction. JOURNAL OF CHEMICAL RESEARCH 2018. [DOI: 10.3184/174751918x15287934329446] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
A four-component reaction was investigated to prepare potassium arylmethylene-4-(1 H-pyrazol-5-ol)-4′-(1 H-pyrazol-5-olate) derivatives from dialkyl but-2-ynedioates, phenylhydrazine, substituted benzaldehydes and potassium carbonate without any catalyst or promoter. The structure of a typical product was confirmed by X-ray crystallography. The advantages of the present methodology are efficiency, broad scope, operational simplicity, high yields and mild reaction conditions.
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Affiliation(s)
- Ting Wang
- School of Chemistry and Chemical Engineering, Yangzhou University, 180 Siwangting Street, Yangzhou 225002, P.R. China
| | - Yang Yu
- School of Chemistry and Chemical Engineering, Yangzhou University, 180 Siwangting Street, Yangzhou 225002, P.R. China
| | - Xushun Qing
- School of Chemistry and Chemical Engineering, Yangzhou University, 180 Siwangting Street, Yangzhou 225002, P.R. China
| | - Chenlu Dai
- School of Chemistry and Chemical Engineering, Yangzhou University, 180 Siwangting Street, Yangzhou 225002, P.R. China
| | - Cunde Wang
- School of Chemistry and Chemical Engineering, Yangzhou University, 180 Siwangting Street, Yangzhou 225002, P.R. China
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13
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Non-Covalent Supported of l-Proline on Graphene Oxide/Fe₃O₄ Nanocomposite: A Novel, Highly Efficient and Superparamagnetically Separable Catalyst for the Synthesis of Bis-Pyrazole Derivatives. Molecules 2018; 23:molecules23020330. [PMID: 29401720 PMCID: PMC6017507 DOI: 10.3390/molecules23020330] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2017] [Revised: 01/12/2018] [Accepted: 01/14/2018] [Indexed: 11/16/2022] Open
Abstract
A superparamagnetic graphene oxide/Fe3O4/l-proline nano hybrid that was obtained from the non-covalent immobilization of l-proline on graphene oxide/Fe3O4 nanocomposite was used as a new magnetically separable catalyst for the efficient synthesis of 4,4′-(arylmethylene)bis(1H-pyrazol-5-ol) derivatives. The prepared heterogeneous catalyst was characterized using FTIR, TGA, DTG, XRD, TEM, SEM, and elemental analysis techniques. Short reaction times (5–15 min), excellent yields (87–98%), and simple experimental procedure with an easy work-up are some of the advantages of the introduced catalyst.
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14
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K2CO3/cyanuric acid catalyzed synthesis of 2-amino-4H-chromene derivatives in water. RESEARCH ON CHEMICAL INTERMEDIATES 2017. [DOI: 10.1007/s11164-017-2900-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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15
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Banerjee D, Karmakar R, Kayal U, Maiti G. One-pot efficient pseudo-five-components synthesis of 4,4′-(arylmethylene)bis(3-methyl-1-phenyl-1 H-pyrazol-5-ols) at room temperature assisted by K 2CO 3. SYNTHETIC COMMUN 2017. [DOI: 10.1080/00397911.2017.1298134] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
| | - Rajiv Karmakar
- Department of Chemistry, Jadavpur University, Kolkata, India
| | - Utpal Kayal
- Department of Chemistry, Jadavpur University, Kolkata, India
| | - Gourhari Maiti
- Department of Chemistry, Jadavpur University, Kolkata, India
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16
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A rapid and efficient solvent-free microwave-assisted synthesis of pyrazolone derivatives containing substituted isoxazole ring. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.04.014] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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17
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Ethylene glycol promoted catalyst-free pseudo three-component green synthesis of bis(coumarin)s and bis(3-methyl-1-phenyl-1H-pyrazol-5-ol)s. Mol Divers 2016; 20:763-70. [PMID: 27222148 DOI: 10.1007/s11030-016-9673-z] [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: 01/11/2016] [Accepted: 05/02/2016] [Indexed: 10/21/2022]
Abstract
An ethylene glycol promoted catalyst-free practically efficient and sustainable approach has been developed for the synthesis of several benzylidene-bis-(4-hydroxycoumarin)s and 4,[Formula: see text]-(arylmethylene)-bis(3-methyl-1-phenyl-1H-pyrazol-5-ol)s by the pseudo three-component reaction of an aldehyde with 4-hydroxycoumarin and 3-methyl-1-phenylpyrazol-5-one, respectively. Inexpensive, non-toxic, and easily available ethylene glycol used as the reaction solvent and promoter renders an efficient protocol in terms of catalyst-free reaction conditions, short reaction time, high yield, practical utility, and green approach.
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18
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Design and Characterization of l-Prolinate-Amberlite as a Novel Heterogeneous Organocatalyst and Its Catalytic Application in the Synthesis of Pyrazol-Derivates. Catal Letters 2015. [DOI: 10.1007/s10562-015-1668-3] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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19
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Gouda MA. Chemistry of 4,4′-(arylmethylene)-bis(3-methyl-1-phenyl-1H-pyrazol-5-ol)s. J Heterocycl Chem 2015. [DOI: 10.1002/jhet.2313] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Moustafa A. Gouda
- Chemistry Department, Faculty of Science; Mansoura University; El-Gomhoria Street ET-35516 Mansoura Egypt
- Department of Chemistry, Faculty of Science and Arts, Ulla; Taibah University; Kingdom of Saudi Arabia
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20
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ZnO Nanoparticles – a Recyclable Catalyst for the Synthesis of Bis(Pyrazolyl)Methanes. Chem Heterocycl Compd (N Y) 2015. [DOI: 10.1007/s10593-015-1635-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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21
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A rapid, efficient, and high-yielding synthesis of 4,4′-(arylmethylene)bis(3-methyl-1H-pyrazol-5-ol) derivatives catalyzed by 12-tungstophosphoric acid (H3PW12O40). RESEARCH ON CHEMICAL INTERMEDIATES 2015. [DOI: 10.1007/s11164-014-1896-y] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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22
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Zarghani M, Akhlaghinia B. Sulfonated nanohydroxyapatite functionalized with 2-aminoethyl dihydrogen phosphate (HAP@AEPH2-SO3H) as a new recyclable and eco-friendly catalyst for rapid one-pot synthesis of 4,4′-(aryl methylene)bis(3-methyl-1H-pyrazol-5-ol)s. RSC Adv 2015. [DOI: 10.1039/c5ra16236j] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
HAP@AEPH2-SO3H, a new, green, solid acid catalyst, was prepared, characterized and applied for the synthesis of 4,4′-(aryl methylene)bis(3-methyl-1H-pyrazol-5-ol)s.
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Affiliation(s)
- Monireh Zarghani
- Department of Chemistry
- Faculty of Sciences
- Ferdowsi University of Mashhad
- Mashhad 9177948974
- Iran
| | - Batool Akhlaghinia
- Department of Chemistry
- Faculty of Sciences
- Ferdowsi University of Mashhad
- Mashhad 9177948974
- Iran
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Eskandari K, Karami B, Khodabakhshi S. An Unexpected Catalytic Synthesis of Novel and Known Bis(Pyrazolyl) Methanes by the use of α-aryl-N-phenyl Nitrones in Aqueous Media. JOURNAL OF CHEMICAL RESEARCH 2014. [DOI: 10.3184/174751914x14114871789226] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Reaction of-aryl- N-phenyl nitrones with 3-methyl-1-phenyl-2-pyrazoline-5-one in the presence of a catalytic amount of silica tungstic acid in EtOH/H2O afforded, unexpectedly, high yields of bis(3-hydroxy-1-phenylpyrazolyl)-arylmethanes instead of the two possible 1,3-addition products. This is the first report of the synthesis of bis(3-hydroxy-1-phenylpyrazolyl)-arylmethanes via the reaction of nitrones and a pyrazolin-5-one. A possible mechanism for the process is suggested.
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Affiliation(s)
- Khalil Eskandari
- Department of Chemistry, Yasouj University, P.O. Box 353, Yasouj, 75918-74831, Iran
| | - Bahador Karami
- Department of Chemistry, Yasouj University, P.O. Box 353, Yasouj, 75918-74831, Iran
| | - Saeed Khodabakhshi
- Nanotechnology Research Center, Research Institute of Petroleum Industry, Tehran, Iran
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