1
|
Prasad T, Mahapatra A, Sharma T, Sahoo CR, Padhy RN. Dihydropyrimidinones as potent anticancer agents: Insight into the structure-activity relationship. Arch Pharm (Weinheim) 2023:e2200664. [PMID: 36942985 DOI: 10.1002/ardp.202200664] [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: 12/19/2022] [Revised: 02/28/2023] [Accepted: 02/28/2023] [Indexed: 03/23/2023]
Abstract
Cancer is a serious disease that has been around for a long time but currently has no sustainable solution. Several medications currently available offer an opportunity for the manifestation of cancer treatment; however, the "search for better" has led to the development and study of a variety of new scaffolds. Dihydropyrimidinones (DHPMs) are a privileged scaffold, prominent for their versatile range of biological activities. In recent years, the anticancer potential of these unsaturated pyrimidine ring systems has been traversed, along with their synthesis methods and the interlinked mechanisms leading to the anticancer activity. This review summarizes the structure-activity relationship of DHPMs as potential anticancer agents. This study is a short review of their synthesis, mechanism of action, and structure-activity relationships (SARs) that are answerable for the anticancer activity of DHPMs and have been thoroughly researched and assessed.
Collapse
Affiliation(s)
- Tanya Prasad
- Department of Pharmaceutical Chemistry, School of Pharmaceutical Sciences, Siksha 'O' Anusandhan (Deemed to be University), Bhubaneswar, Odisha, India
| | - Aastha Mahapatra
- College of Professional Studies, Northeastern University, Boston, Massachusetts, USA
| | - Tripti Sharma
- Department of Pharmaceutical Chemistry, School of Pharmaceutical Sciences, Siksha 'O' Anusandhan (Deemed to be University), Bhubaneswar, Odisha, India
| | - Chita R Sahoo
- Central Research Laboratory, Institute of Medical Sciences and SUM Hospital, Siksha 'O' Anusandhan Deemed to be University, Bhubaneswar, Odisha, India
| | - Rabindra Nath Padhy
- Central Research Laboratory, Institute of Medical Sciences and SUM Hospital, Siksha 'O' Anusandhan Deemed to be University, Bhubaneswar, Odisha, India
| |
Collapse
|
2
|
Anjirwala SN, Parmar PS, Patel SK. Synthetic protocols for non-fused pyrimidines. SYNTHETIC COMMUN 2022. [DOI: 10.1080/00397911.2022.2137682] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Affiliation(s)
| | - Parnas S. Parmar
- Department of Chemistry, Veer Narmad South Gujarat University, Surat, India
| | - Saurabh K. Patel
- Department of Chemistry, Veer Narmad South Gujarat University, Surat, India
| |
Collapse
|
3
|
Bakht MA, Alotaibi M, Alharthi AI, Geesi MH, Ud Din I, Imran M, Thabet HK. Zn:Cr Mixed Oxide Catalyzed Facile Construction of 4-Aryl-6-(3-Coumarinyl)Pyrimidin-2(1 H)-Ones Derivatives under the Solvent-Free Condition. Polycycl Aromat Compd 2022. [DOI: 10.1080/10406638.2021.1924800] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Md. Afroz Bakht
- Departmentof Chemistry, College Science and Humanities, Prince Sattam Bin AbdulazizUniversity, Al-Kharj, Saudi Arabia
| | - Mshari Alotaibi
- Departmentof Chemistry, College Science and Humanities, Prince Sattam Bin AbdulazizUniversity, Al-Kharj, Saudi Arabia
| | - Abdulrahman I. Alharthi
- Departmentof Chemistry, College Science and Humanities, Prince Sattam Bin AbdulazizUniversity, Al-Kharj, Saudi Arabia
| | - Mohamed H. Geesi
- Departmentof Chemistry, College Science and Humanities, Prince Sattam Bin AbdulazizUniversity, Al-Kharj, Saudi Arabia
| | - Israf Ud Din
- Departmentof Chemistry, College Science and Humanities, Prince Sattam Bin AbdulazizUniversity, Al-Kharj, Saudi Arabia
| | - Mohd. Imran
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Northern Border University, Rafha, Saudi Arabia
| | - Hamdy Khamees Thabet
- Department of Chemistry, Faculty of Arts and Science, Northern Border University, Rafha, Saudi Arabia
| |
Collapse
|
4
|
Krishnan VBR, Kumari Merugu S, Jyothsna Gali S, Kapavarapu R, Babu Bollikolla H. Efficient Multicomponent Synthesis of Biginelli‐Dihydro‐Pyrimidines and Evaluation of Anti‐Cancer Activity. ChemistrySelect 2022. [DOI: 10.1002/slct.202201630] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- V. B. R. Krishnan
- Department of Chemistry Acharya Nagarjuna University, Nagar Guntur 522510 AP-India
| | - Santha Kumari Merugu
- Department of Chemistry Acharya Nagarjuna University, Nagar Guntur 522510 AP-India
| | - Siva Jyothsna Gali
- Department of Chemistry Acharya Nagarjuna University, Nagar Guntur 522510 AP-India
| | - Ravikumar Kapavarapu
- Department of Pharmaceutical Chemistry and Phytochemistry Nirmala College of Pharmacy, Atmakur, Mangalagiri Guntur 522302 AP-India
| | - Hari Babu Bollikolla
- Department of Chemistry Acharya Nagarjuna University, Nagar Guntur 522510 AP-India
- Dept. of Nanotechnology Acharya Nagarjuna University, NNagar Guntur 522510 AP-India
| |
Collapse
|
5
|
Gogia A, Mandal SK. Topologically Driven Pore/Surface Engineering in a Recyclable Microporous Metal-Organic Vessel Decorated with Hydrogen-Bond Acceptors for Solvent-Free Heterogeneous Catalysis. ACS APPLIED MATERIALS & INTERFACES 2022; 14:27941-27954. [PMID: 35679587 DOI: 10.1021/acsami.2c06141] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The use of metal-organic frameworks (MOFs) comprising custom-designed linkers/ligands as efficient and recyclable heterogeneous catalysts is on the rise. However, the topologically driven bifunctional porous MOFs for showcasing a synergistic effect of two distinct activation pathways of substrates (e.g., involving hydrogen bonding and a Lewis acid) in multicomponent organic transformations are very challenging. In particular, the novelty of such studies lies in the proper pore and/or surface engineering in MOFs for bringing the substrates in close proximity to understand the mechanistic aspects at the molecular level. This work represents the topological design, solid-state structural characterization, and catalytic behavior of an oxadiazole tetracarboxylate-based microporous three-dimensional (3D) metal-organic framework (MOF), {[Zn2(oxdia)(4,4'-bpy)2]·8.5H2O}n (1), where the tetrapodal (4-connected) 5,5'-(1,3,4-oxadiazole-2,5-diyl)diisophthalate (oxdia4-), the tetrahedral metal vertex (Zn(II)), and a 2-connected pillar linker 4,4'-bipyridine (4,4'-bpy) are unique in their roles for the formation, stability, and function. As a proof of concept, the efficient utilization of both the oxadiazole moiety with an ability to provide H-bond acceptors and the coordinatively unsaturated Zn(II) centers in 1 is demonstrated for the catalytic process of the one-pot multicomponent Biginelli reaction under mild conditions and without a solvent. The key steps of substrate binding with the oxadiazole moiety are ascertained by a fluorescence experiment, demonstrating a decrease or increase in the emission intensity upon interaction with the substrates. Furthermore, the inherent polarizability of the oxadiazole moiety is exploited for CO2 capture and its size-selective chemical fixation to cyclic carbonates at room temperature and under solvent-free conditions. For both catalytic processes, the chemical stability, structural integrity, heterogeneity, versatility in terms of substrate scope, and mechanistic insights are discussed. Interestingly, the first catalytic process occurs on the surface, while the second reaction occurs inside the pore. This study opens new ways to catalyze different organic transformation reactions by utilizing this docking strategy to bring the multiple components close together by a microporous MOF.
Collapse
Affiliation(s)
- Alisha Gogia
- Department of Chemical Sciences, Indian Institute of Science Education and Research Mohali, Sector 81, Manauli P.O., S.A.S. Nagar, Mohali 140306, Punjab, India
| | - Sanjay K Mandal
- Department of Chemical Sciences, Indian Institute of Science Education and Research Mohali, Sector 81, Manauli P.O., S.A.S. Nagar, Mohali 140306, Punjab, India
| |
Collapse
|
6
|
Design and exploration of caffeine-based Brönsted acidic ionic liquid (CaffBAIL) for the synthesis of DHPMs, xanthenediones, and acridinediones. RESEARCH ON CHEMICAL INTERMEDIATES 2022. [DOI: 10.1007/s11164-022-04724-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
7
|
Trinuclear cis–[MoVIO2] complexes catalyzed efficient synthesis of 3,4-dihydropyrimidin-2(1H)-one based biomolecules via one-pot-three-components Biginelli reaction under solvent-free condition. Inorganica Chim Acta 2022. [DOI: 10.1016/j.ica.2021.120750] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
|
8
|
Hf(OTf) 4-Catalyzed Three-Component Synthesis of N-Carbamate-Protected β-Amino Ketones. Molecules 2022; 27:molecules27031122. [PMID: 35164390 PMCID: PMC8840004 DOI: 10.3390/molecules27031122] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Revised: 01/31/2022] [Accepted: 02/01/2022] [Indexed: 11/17/2022] Open
Abstract
Hafnium(IV) triflate (Hf(OTf)4) has been identified as a potent catalyst for the direct three-component synthesis of β-carbamate ketones. This new method, featuring a low catalyst loading, fast reaction rate, and solvent-free conditions, provided facile access to a diversity of carbamate-protected Mannich bases. A mechanistic investigation indicated that the three-component reaction proceeds via sequential aldol condensation and aza-Michael addition, but not the Mannich-type pathway.
Collapse
|
9
|
Al-Zaydi KM, Al-Boqami M, Elnagdi NMH. Green Synthesis of Dihydropyrimidines and Pyridines Utilizing Biginelli Reaction. Polycycl Aromat Compd 2021. [DOI: 10.1080/10406638.2021.1998151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Khadijah M. Al-Zaydi
- Chemistry Department, Faculty of Sciences, University of Jeddah, Jeddah, Saudi Arabia
- Department of Chemistry, Faculty of Sciences-AL Faisaliah, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Modi Al-Boqami
- Chemistry Department, Faculty of Sciences, University of Jeddah, Jeddah, Saudi Arabia
- Department of Chemistry, Faculty of Sciences-AL Faisaliah, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Noha M. H. Elnagdi
- Faculty of Pharmacy, Organic Chemistry Department, Modern University for Technology and Information, Cairo, Egypt
| |
Collapse
|
10
|
Gong SS, Zheng CH, Chen ZZ, Yang DZ, Chi M, Pu SZ, Sun Q. Photo-Switchable Aggregation-Induced Emission of Bisthienylethene-Dipyrimido[2,1- b][1,3]benzothiazole Triad. Molecules 2021; 26:molecules26175382. [PMID: 34500815 PMCID: PMC8433884 DOI: 10.3390/molecules26175382] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Revised: 08/24/2021] [Accepted: 08/31/2021] [Indexed: 11/16/2022] Open
Abstract
A bisthienylethene-dipyrimido[2,1-b][1,3]benzothiazole (BTE-2PBT) triad has been designed and synthesized based on our recent discovery of PBTs as atypical propeller-shaped novel AIEgens. The triad not only maintains the photochromic properties of BTE moiety in solution, film, and solid state but also exhibits remarkable AIE properties. Moreover, the fluorescence of BTE-2PBT PMMA film could be modulated with high contrast by alternate UV and visible light irradiation. Photoerasing, rewriting, and non-destructive readout of fluorescent images on BTE-2PBT PMMA film well demonstrate its potential application as optical memory media.
Collapse
Affiliation(s)
- Shan-Shan Gong
- College of Chemistry, Nanchang University, Nanchang 330031, China;
- Jiangxi Key Laboratory of Organic Chemistry, Jiangxi Science and Technology Normal University, Nanchang 330013, China; (C.-H.Z.); (Z.-Z.C.); (D.-Z.Y.); (M.C.)
| | - Chun-Hong Zheng
- Jiangxi Key Laboratory of Organic Chemistry, Jiangxi Science and Technology Normal University, Nanchang 330013, China; (C.-H.Z.); (Z.-Z.C.); (D.-Z.Y.); (M.C.)
| | - Zhen-Zhen Chen
- Jiangxi Key Laboratory of Organic Chemistry, Jiangxi Science and Technology Normal University, Nanchang 330013, China; (C.-H.Z.); (Z.-Z.C.); (D.-Z.Y.); (M.C.)
| | - Dong-Zhao Yang
- Jiangxi Key Laboratory of Organic Chemistry, Jiangxi Science and Technology Normal University, Nanchang 330013, China; (C.-H.Z.); (Z.-Z.C.); (D.-Z.Y.); (M.C.)
| | - Mei Chi
- Jiangxi Key Laboratory of Organic Chemistry, Jiangxi Science and Technology Normal University, Nanchang 330013, China; (C.-H.Z.); (Z.-Z.C.); (D.-Z.Y.); (M.C.)
| | - Shou-Zhi Pu
- College of Chemistry, Nanchang University, Nanchang 330031, China;
- Jiangxi Key Laboratory of Organic Chemistry, Jiangxi Science and Technology Normal University, Nanchang 330013, China; (C.-H.Z.); (Z.-Z.C.); (D.-Z.Y.); (M.C.)
- Department of Ecology and Environment, Yuzhang Normal University, Nanchang 330103, China
- Correspondence: (S.-Z.P.); (Q.S.)
| | - Qi Sun
- Jiangxi Key Laboratory of Organic Chemistry, Jiangxi Science and Technology Normal University, Nanchang 330013, China; (C.-H.Z.); (Z.-Z.C.); (D.-Z.Y.); (M.C.)
- Correspondence: (S.-Z.P.); (Q.S.)
| |
Collapse
|
11
|
Sadjadi S, Koohestani F, Heravi M. Biochar-Based Graphitic Carbon Nitride Adorned with Ionic Liquid Containing Acidic Polymer: A Versatile, Non-Metallic Catalyst for Acid Catalyzed Reaction. Molecules 2020; 25:E5958. [PMID: 33339246 PMCID: PMC7766038 DOI: 10.3390/molecules25245958] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Revised: 12/11/2020] [Accepted: 12/13/2020] [Indexed: 12/18/2022] Open
Abstract
A novel biochar-based graphitic carbon nitride was prepared through calcination of Zinnia grandiflora petals and urea. To provide acidic and ionic-liquid functionalities on the prepared carbon, the resultant biochar-based graphitic carbon nitride was vinyl functionalized and polymerized with 2-acrylamido-2-methyl-1-propanesulfonic acid, acrylic acid and the as-prepared 1-vinyl-3-butylimidazolium chloride. The final catalytic system that benefits from both acidic (-COOH and -SO3H) and ionic-liquid functionalities was applied as a versatile, metal-free catalyst for promoting some model acid catalyzed reactions such as Knoevenagel condensation and Biginelli reaction in aqueous media under a very mild reaction condition. The results confirmed high activity of the catalyst. Broad substrate scope and recyclability and stability of the catalyst were other merits of the developed protocols. Comparative experiments also indicated that both acidic and ionic-liquid functionalities on the catalyst participated in the catalysis.
Collapse
Affiliation(s)
- Samahe Sadjadi
- Gas Conversion Department, Faculty of Petrochemicals, Iran Polymer and Petrochemicals Institute, P.O. Box 14975112, Tehran 1497713115, Iran;
| | - Fatemeh Koohestani
- Gas Conversion Department, Faculty of Petrochemicals, Iran Polymer and Petrochemicals Institute, P.O. Box 14975112, Tehran 1497713115, Iran;
| | - Majid Heravi
- Department of Chemistry, School of Science, Alzahra University, P.O. Box 1993891176, Vanak, Tehran 1993891176, Iran
| |
Collapse
|
12
|
Jumbam ND, Masamba W. Bio-Catalysis in Multicomponent Reactions. Molecules 2020; 25:E5935. [PMID: 33333902 PMCID: PMC7765341 DOI: 10.3390/molecules25245935] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Revised: 12/04/2020] [Accepted: 12/11/2020] [Indexed: 01/16/2023] Open
Abstract
Enzyme catalysis is a very active research area in organic chemistry, because biocatalysts are compatible with and can be adjusted to many reaction conditions, as well as substrates. Their integration in multicomponent reactions (MCRs) allows for simple protocols to be implemented in the diversity-oriented synthesis of complex molecules in chemo-, regio-, stereoselective or even specific modes without the need for the protection/deprotection of functional groups. The application of bio-catalysis in MCRs is therefore a welcome and logical development and is emerging as a unique tool in drug development and discovery, as well as in combinatorial chemistry and related areas of research.
Collapse
Affiliation(s)
| | - Wayiza Masamba
- Department of Chemical and Physical Sciences, Faculty of Natural Sciences, Walter Sisulu University, Nelson Mandela Drive, Mthatha 5117, South Africa;
| |
Collapse
|
13
|
Chopda LV, Dave PN. Fe(III)/Bentonite as a Heterogeneous Catalyst for the Synthesis of 3,4‐dihydropyrimidin‐2‐(1H)‐ones. ChemistrySelect 2020. [DOI: 10.1002/slct.202003890] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Lakha V Chopda
- Department of Chemistry KSKV Kachchh University Bhuj India
| | - Pragnesh N. Dave
- Department of Chemistry KSKV Kachchh University Bhuj India
- Department Of Chemistry Sardar Patel University, Vallabh Vidyanagar India
| |
Collapse
|
14
|
Karimian A, Rad MS, Mahdavi E.
CoNiFe
2
O
4
@
Silica‐SO
3
H
nanoparticles: New recyclable magnetic nanocatalyst for the one‐pot synthesis of 3,4‐dihydropyrimidin‐2(
1
H
)‐ones/thiones under solvent‐free conditions. J CHIN CHEM SOC-TAIP 2020. [DOI: 10.1002/jccs.202000229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Azam Karimian
- Department of Chemistry, Faculty of Sciences University of Gonabad Gonabad Iran
| | - Masoud Saadati Rad
- Department of Chemistry, Faculty of Sciences University of Gonabad Gonabad Iran
| | - Elham Mahdavi
- Department of Chemistry, Faculty of Sciences University of Gonabad Gonabad Iran
| |
Collapse
|
15
|
Xie ZB, Fu LH, Meng J, Lan J, Hu ZY, Le ZG. Efficient biocatalytic strategy for one-pot Biginelli reaction via enhanced specific effects of microwave in a circulating reactor. Bioorg Chem 2020; 101:103949. [PMID: 32531507 DOI: 10.1016/j.bioorg.2020.103949] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2020] [Revised: 05/12/2020] [Accepted: 05/14/2020] [Indexed: 12/17/2022]
Abstract
A one-pot efficient biocatalytic strategy for the synthesis of 3,4-dihydropyrimidin-2-(1H)-ones was developed in a circulating microwave reactor selecting α-chymotrypsin as the promiscuous biocatalyst. In the circulating reaction system, the combination of microwave heating and external cooling could avoid the denaturation and inactivation of enzyme, and greatly improved the radiation power of microwave, thus improving the specific effects of microwave. During the reaction process, the microwave radiation power was automatically adjusted by adjusting the speed of the reaction mixture circulation. When the microwave power was maintained at 110 W, the best results could be obtained with the highest yield of 96% at 55 °C in 50 min, and the reaction had a wide range of substrates. But no obvious product was detected in a tank microwave reactor at 55 °C for 100 min, under this condition, the microwave power was maintained at about 3 W. As a contrast, the reaction only obtained 63% yield in 55 °C oil bath for 96 h.
Collapse
Affiliation(s)
- Zong-Bo Xie
- State Key Laboratory of Nuclear Resources and Environment, School of nuclear science and engineering, East China University of Technology, 418 Guanglan Road, Nanchang 330013, PR China; Department of Applied Chemistry, East China University of Technology, 418 Guanglan Road, Nanchang 330013, PR China.
| | - Lei-Han Fu
- Department of Applied Chemistry, East China University of Technology, 418 Guanglan Road, Nanchang 330013, PR China
| | - Jia Meng
- Department of Applied Chemistry, East China University of Technology, 418 Guanglan Road, Nanchang 330013, PR China
| | - Jin Lan
- Department of Applied Chemistry, East China University of Technology, 418 Guanglan Road, Nanchang 330013, PR China
| | - Zhi-Yu Hu
- Department of Applied Chemistry, East China University of Technology, 418 Guanglan Road, Nanchang 330013, PR China
| | - Zhang-Gao Le
- State Key Laboratory of Nuclear Resources and Environment, School of nuclear science and engineering, East China University of Technology, 418 Guanglan Road, Nanchang 330013, PR China; Department of Applied Chemistry, East China University of Technology, 418 Guanglan Road, Nanchang 330013, PR China.
| |
Collapse
|
16
|
Activated Carbon Supported Hafnium(IV) Chloride as an Efficient, Recyclable, and Facile Removable Catalyst for Expeditious Parallel Synthesis of Benzimidazoles. Catalysts 2020. [DOI: 10.3390/catal10040436] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
A highly efficient method for parallel synthesis of a diversity of 1,2-disubstituted benzimidazoles from N-substituted phenylenediamines and aldehydes has been developed by using 10 mol% HfCl4 on activated carbon (HfCl4/C) as the catalyst. The newly reported HfCl4/C catalyst not only mediated fast and clean formation of benzimidazoles but also could be easily removed from the reaction solution and reused up to eight times. Scanning electron microscope (SEM) and thermal desorption studies showed that activated carbon could reversibly adsorb and release Hf(IV) in ethanol upon cooling and heating, thereby serving as a thermal-controlled solid support.
Collapse
|
17
|
Han SB, Wei JY, Peng XC, Liu R, Gong SS, Sun Q. Hf(OTf) 4 as a Highly Potent Catalyst for the Synthesis of Mannich Bases under Solvent-Free Conditions. Molecules 2020; 25:E388. [PMID: 31963465 PMCID: PMC7024362 DOI: 10.3390/molecules25020388] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Revised: 01/10/2020] [Accepted: 01/12/2020] [Indexed: 12/04/2022] Open
Abstract
Hf(OTf)4 was identified as a highly potent catalyst (0.1-0.5 mol%) for three-component Mannich reaction under solvent-free conditions. Hf(OTf)4-catalyzed Mannich reaction exhibited excellent regioselectivity and diastereoselectivity when alkyl ketones were employed as substrates. 1H NMR tracing of the H/D exchange reaction of ketones in MeOH-d4 indicated that Hf(OTf)4 could significantly promote the keto-enol tautomerization, thereby contributing to the acceleration of reaction rate.
Collapse
Affiliation(s)
| | | | | | | | - Shan-Shan Gong
- Jiangxi Key Laboratory of Organic Chemistry, Jiangxi Science and Technology Normal University, 605 Fenglin Avenue, Nanchang 330013, China
| | - Qi Sun
- Jiangxi Key Laboratory of Organic Chemistry, Jiangxi Science and Technology Normal University, 605 Fenglin Avenue, Nanchang 330013, China
| |
Collapse
|
18
|
Mardani F, Khorshidi A, Gholampoor S. Sulfonated Caspian Sea Sand: A Promising Heterogeneous Solid Acid Catalyst in Comparison with –SO
3
H Functionalized NiFe
2
O
4
@SiO
2
@KIT‐6. ChemistrySelect 2019. [DOI: 10.1002/slct.201901694] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Fatemeh Mardani
- Department of ChemistryFaculty of sciencesUniversity of Guilan P. O. Box 41335–1914 Iran
| | - Alireza Khorshidi
- Department of ChemistryFaculty of sciencesUniversity of Guilan P. O. Box 41335–1914 Iran
- Department of Water Engineering and EnvironmentCaspian Sea Basin Research CenterUniversity of Guilan, Rasht Iran
| | - Sajad Gholampoor
- Department of ChemistryFaculty of sciencesUniversity of Guilan P. O. Box 41335–1914 Iran
| |
Collapse
|