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Beiranvand R, Dekamin MG. Trimesic acid-functionalized chitosan: A novel and efficient multifunctional organocatalyst for green synthesis of polyhydroquinolines and acridinediones under mild conditions. Heliyon 2023; 9:e16315. [PMID: 37260895 PMCID: PMC10227330 DOI: 10.1016/j.heliyon.2023.e16315] [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: 12/20/2022] [Revised: 05/10/2023] [Accepted: 05/12/2023] [Indexed: 06/02/2023] Open
Abstract
Trimesic acid-functionalized chitosan (Cs/ECH-TMA) material was prepared through a simple procedure by using inexpensive and commercially available chitosan (Cs), epichlorohydrin (ECH) linker and trimesic acid (TMA). The obtained bio-based Cs/ECH-TMA material was characterized using energy-dispersive X-ray (EDX) and Fourier-transform infrared (FTIR) spectroscopy, field emission scanning electron microscopy (FESEM) and X-ray diffraction (XRD) analysis. The Cs/ECH-TMA material was successfully used, as a multifunctional heterogeneous and sustainable catalyst, for efficient and expeditious synthesis of medicinally important polyhydroquinoline (PHQ) and polyhydroacridinedione (PHA) scaffolds through the Hantzsch condensation in a one-pot reaction. Indeed, the heterogeneous Cs/ECH-TMA material can be considered as a synergistic multifunctional organocatalyst due to the presence of a large number of acidic active sites in its structure as well as hydrophilicity. Both PHQs and PHAs were synthesized in the presence of biodegradable heterogeneous Cs/ECH-TMA catalytic system from their corresponding substrates in EtOH under reflux conditions and high to quantitative yields. The Cs/ECH-TMA catalyst is recyclable and can be reused at least four times without significant loss of its catalytic activity.
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In Melting Points We Trust: A Review on the Misguiding Characterization of Multicomponent Reactions Adducts and Intermediates. Molecules 2022; 27:molecules27217552. [DOI: 10.3390/molecules27217552] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Revised: 10/25/2022] [Accepted: 11/02/2022] [Indexed: 11/06/2022] Open
Abstract
We discuss herein the problems associated with using melting points to characterize multicomponent reactions’ (MCRs) products and intermediates. Although surprising, it is not rare to find articles in which these MCRs final adducts (or their intermediates) are characterized solely by comparing melting points with those available from other reports. A brief survey among specialized articles highlights serious and obvious problems with this practice since, for instance, cases are found in which as many as 25 quite contrasting melting points have been attributed to the very same MCR adduct. Indeed, it seems logical to assume that the inherent non-confirmatory nature of melting points could be vastly misleading as a protocol for structural confirmation, but still many publications (also in the Q1 and Q2 quartiles) insist on using it. This procedure contradicts best practices in organic synthesis, and articles fraught with limitations and misleading conclusions have been published in the MCRs field. The drawbacks inherent to this practice are indeed serious and have misguided MCRs advances. We therefore suggest some precautions aimed at avoiding future confusions.
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Kumar G, Bhargava G, Kumar R. Trio Role of Deep Eutectic Solvents in the Green Synthesis of 1,4-Dihydropyridine Synthesis via Hantzsch Reaction. Polycycl Aromat Compd 2022. [DOI: 10.1080/10406638.2022.2133905] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Gobind Kumar
- Department of Chemical Sciences, I. K. G. Punjab Technical University, Kapurthala, India
| | - Gaurav Bhargava
- Department of Chemical Sciences, I. K. G. Punjab Technical University, Kapurthala, India
| | - Rupesh Kumar
- Department of Chemical Sciences, I. K. G. Punjab Technical University, Kapurthala, India
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Rahimi J, Niksefat M, Heidari M, Naderi M, Abbasi H, Tajik Ijdani M, Maleki A. Ammonium metavanadate (NH 4VO 3): a highly efficient and eco-friendly catalyst for one-pot synthesis of pyridines and 1,4-dihydropyridines. Sci Rep 2022; 12:13687. [PMID: 35953520 PMCID: PMC9372032 DOI: 10.1038/s41598-022-17378-7] [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: 04/10/2022] [Accepted: 07/25/2022] [Indexed: 11/23/2022] Open
Abstract
In this study, we reported the ammonium metavanadate (NH4VO3) as an efficient, cost-effective, and mild catalyst for the synthesis of substituted pyridines via a one-pot pseudo four-component reaction. Furthermore, we investigated Hantzsch 1,4-dihydropyridines (1,4-DHPs) synthesis and oxidation of 1,4-DHPs to their corresponding pyridines. The present approach offers a rapid methodology for accessing various pyridines with broad functional group tolerance and good yields using NH4VO3 catalyst as a green catalyst.
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Affiliation(s)
- Jamal Rahimi
- Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology, Tehran, 16846-13114, Iran
| | - Maryam Niksefat
- Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology, Tehran, 16846-13114, Iran
| | - Marzieh Heidari
- Department of Chemistry, Rutgers University, 73 Warren Street, Newark, NJ, 07102, USA
| | - Mehdi Naderi
- Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology, Tehran, 16846-13114, Iran
| | - Hadis Abbasi
- Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology, Tehran, 16846-13114, Iran
| | - Mohammad Tajik Ijdani
- Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology, Tehran, 16846-13114, 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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Mineyeva IV, Faletrov YV, Starovoitova VA, Shkumatov VM. New 1,4-Dihydropyridines. Optimization of the Synthesis and In Silico Analysis of Biological Activity. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2022. [DOI: 10.1134/s1070428022030034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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6
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Construction and Aromatization of Hantzsch 1,4‐Dihydropyridines under Microwave Irradiation: A Green Approach. ChemistrySelect 2022. [DOI: 10.1002/slct.202104032] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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7
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Zeynizadeh B, Rahmani S, Eghbali E. Anchored sulfonic acid on silica-layered NiFe2O4: A magnetically reusable nanocatalyst for Hantzsch synthesis of 1,4-dihydropyridines. Polyhedron 2019. [DOI: 10.1016/j.poly.2019.04.035] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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8
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Pham DD, Le NT, Vo-Thanh G. Fast and Efficient Hantzsch Synthesis Using Acid-Activated and Cation-Exchanged Montmorillonite Catalysts under Solvent-Free Microwave Irradiation Conditions. ChemistrySelect 2017. [DOI: 10.1002/slct.201702681] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Duc Dung Pham
- Department of Organic Chemistry; Faculty of Chemistry; University of Science; Viet Nam National University-Ho Chi Minh City; Viet Nam
| | - Ngoc Thach Le
- Department of Organic Chemistry; Faculty of Chemistry; University of Science; Viet Nam National University-Ho Chi Minh City; Viet Nam
| | - Giang Vo-Thanh
- Laboratoire de Catalyse Moléculaire; Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO), CNRS UMR 8182; Université Paris-Sud, Université Paris Saclay; 91405 Orsay Cedex France
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Zolfagharinia S, Kolvari E, Salehi M. Highly efficient and recyclable phosphoric acid functionalized zirconia encapsulated-Fe3O4 nanoparticles: clean synthesis of 1,4-dihydropyridine and 1-amidoalkyl-2-naphthol derivatives. REACTION KINETICS MECHANISMS AND CATALYSIS 2017. [DOI: 10.1007/s11144-017-1186-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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10
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A New Type of Magnetically-Recoverable Heteropolyacid Nanocatalyst Supported on Zirconia-Encapsulated Fe3O4 Nanoparticles as a Stable and Strong Solid Acid for Multicomponent Reactions. Catal Letters 2017. [DOI: 10.1007/s10562-017-2015-7] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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11
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Rekunge DS, Khatri CK, Chaturbhuj GU. Sulfated polyborate: An efficient and reusable catalyst for one pot synthesis of Hantzsch 1,4-dihydropyridines derivatives using ammonium carbonate under solvent free conditions. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.02.038] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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12
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Dekamin MG, Kazemi E, Karimi Z, Mohammadalipoor M, Naimi-Jamal MR. Chitosan: An efficient biomacromolecule support for synergic catalyzing of Hantzsch esters by CuSO 4. Int J Biol Macromol 2016; 93:767-774. [DOI: 10.1016/j.ijbiomac.2016.09.012] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2015] [Revised: 09/01/2016] [Accepted: 09/04/2016] [Indexed: 01/24/2023]
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13
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Satish G, Sharma A, Gadidasu KK, Vedula RR, Penta S. Synthesis of 4-aryl-2-pyranyl-7,8-dihydroquinolin-5(6H)-ones catalyzed by cerium ammonium nitrate via Hantzsch multicomponent reaction and their antibacterial activity. Chem Heterocycl Compd (N Y) 2016. [DOI: 10.1007/s10593-016-1902-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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14
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Bitaraf M, Amoozadeh A, Otokesh S. A Simple and Efficient One-pot Synthesis of 1,4-dihydropyridines Using Nano-WO3- supported Sulfonic Acid as an Heterogeneous Catalyst under Solvent-free Conditions. J CHIN CHEM SOC-TAIP 2016. [DOI: 10.1002/jccs.201500453] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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15
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Khaskel A, Barman P. Benzyltrimethylammoniumfluoride Hydrate: An Efficient Catalyst for One-Pot Synthesis of Hantzsch 1,4-Dihydropyridines and Their Aromatization. HETEROATOM CHEMISTRY 2016. [DOI: 10.1002/hc.21308] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Anamika Khaskel
- Department of Chemistry; National Institute of Technology; Silchar 788 010 India
| | - Pranjit Barman
- Department of Chemistry; National Institute of Technology; Silchar 788 010 India
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16
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Kang LQ, Cao ZJ, Lei ZJ. 2-Hydroxyethylammonium acetate: an efficient and reusable homogeneous catalyst for the synthesis of Hantzsch 1,4-dihydropyridines. MONATSHEFTE FUR CHEMIE 2015. [DOI: 10.1007/s00706-015-1587-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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17
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Shiri M, Nejatinezhad-Arani A, Faghihi Z. Synthesis of Novel Quinoline-substituted 1,4-dihydropyridine Derivatives via Hantzsch Reaction in Aqueous Medium: Potential Bioactive Compounds. J Heterocycl Chem 2015. [DOI: 10.1002/jhet.2553] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Morteza Shiri
- Department of Chemistry, Faculty of Physics & Chemistry; Alzahra University; Vanak Tehran 1993893973 Iran
| | - Atefeh Nejatinezhad-Arani
- Department of Chemistry, Faculty of Physics & Chemistry; Alzahra University; Vanak Tehran 1993893973 Iran
| | - Zeinab Faghihi
- Department of Chemistry, Faculty of Physics & Chemistry; Alzahra University; Vanak Tehran 1993893973 Iran
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18
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Air-stable zirconocene bis(perfluorobutanesulfonate) as a highly efficient catalyst for synthesis of N-heterocyclic compounds. J Organomet Chem 2015. [DOI: 10.1016/j.jorganchem.2015.02.014] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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19
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20
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Magnetic Fe3O4 nanoparticles: Efficient and recoverable nanocatalyst for the synthesis of polyhydroquinolines and Hantzsch 1,4-dihydropyridines under solvent-free conditions. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/j.molcata.2013.11.010] [Citation(s) in RCA: 125] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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21
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Kumar R, Andhare NH, Shard A, Richa R, Sinha AK. Multicomponent diversity-oriented synthesis of symmetrical and unsymmetrical 1,4-dihydropyridines in recyclable glycine nitrate (GlyNO3) ionic liquid: a mechanistic insight using Q-TOF, ESI-MS/MS. RSC Adv 2014. [DOI: 10.1039/c4ra02169j] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
Glycine nitrate (GlyNO3) ionic liquid has been explored for the synthesis of symmetrical and unsymmetrical 1,4-DHPs in good-to-excellent yields with mechanistic studies using Q-TOF and ESI-MS/MS.
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Affiliation(s)
- Rajesh Kumar
- Natural Plant Products Division
- CSIR-Institute of Himalayan Bioresource Technology
- Palampur-176061, India
- Academy of Scientific and Innovative Research (AcSIR)
- New Delhi, India
| | - Nitin H. Andhare
- Medicinal and Process Chemistry Division
- CSIR-Central Drug Research Institute
- Lucknow-226031, India
| | - Amit Shard
- Natural Plant Products Division
- CSIR-Institute of Himalayan Bioresource Technology
- Palampur-176061, India
| | - Richa Richa
- Natural Plant Products Division
- CSIR-Institute of Himalayan Bioresource Technology
- Palampur-176061, India
| | - Arun Kumar Sinha
- Natural Plant Products Division
- CSIR-Institute of Himalayan Bioresource Technology
- Palampur-176061, India
- Academy of Scientific and Innovative Research (AcSIR)
- New Delhi, India
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22
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Ananda Kumar TD, Mohan P, Subrahmanyam CVS, Satyanarayana K. Comparative Study of Catalytic Potential of TBAB, BTEAC, and CTAB in One-Pot Synthesis of 1,4-Dihydropyridines Under Aqueous Medium. SYNTHETIC COMMUN 2013. [DOI: 10.1080/00397911.2013.825807] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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23
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Discovery of novel 1,4-dihydropyridine-based PDE4 inhibitors. Bioorg Med Chem Lett 2013; 23:1104-9. [DOI: 10.1016/j.bmcl.2012.11.121] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2012] [Revised: 11/14/2012] [Accepted: 11/30/2012] [Indexed: 12/31/2022]
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24
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Ghosh PP, Mukherjee P, Das AR. Triton-X-100 catalyzed synthesis of 1,4-dihydropyridines and their aromatization to pyridines and a new one pot synthesis of pyridines using visible light in aqueous media. RSC Adv 2013. [DOI: 10.1039/c3ra40706c] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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25
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Light induced synthesis of symmetrical and unsymmetrical dihydropyridines in ethyl lactate–water under tunable conditions. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2012.10.106] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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26
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Comins DL, Higuchi K, Young DW. Dihydropyridine Preparation and Application in the Synthesis of Pyridine Derivatives. ADVANCES IN HETEROCYCLIC CHEMISTRY 2013. [DOI: 10.1016/b978-0-12-408100-0.00006-9] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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27
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1-Methylimidazolium trifluoroacetate [Hmim]Tfa: Mild and efficient Brønsted acidic ionic liquid for Hantzsch reaction under microwave irradiation. J CHEM SCI 2012. [DOI: 10.1007/s12039-012-0306-5] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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28
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Wu XY. Facile and Green Synthesis of 1,4-Dihydropyridine Derivatives in n-Butyl Pyridinium Tetrafluoroborate. SYNTHETIC COMMUN 2011. [DOI: 10.1080/00397911.2010.525773] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
- Xiao Yun Wu
- a School of Pharmaceutical Sciences , Southern Medical University , Guangzhou , China
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29
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Yadav DK, Patel R, Srivastava VP, Watal G, Yadav LDS. LiBr as an Efficient Catalyst for One-pot Synthesis of Hantzsch 1,4-Dihydropyridines under Mild Conditions. CHINESE J CHEM 2011. [DOI: 10.1002/cjoc.201190036] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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30
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DATTA B, PASHA MA. Silica Sulfuric Acid: An Efficient Heterogeneous Catalyst for the One-Pot Synthesis of 1,4-Dihydropyridines under Mild and Solvent-Free Conditions. CHINESE JOURNAL OF CATALYSIS 2011. [DOI: 10.1016/s1872-2067(10)60252-5] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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31
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Reddy PP, Vijayakumar V, Suresh J, Narasimhamurthy T, Lakshman PLN. Diethyl 4-(2,4-dichloro-phen-yl)-2,6-dimethyl-1,4-dihydro-pyridine-3,5-dicarboxyl-ate. Acta Crystallogr Sect E Struct Rep Online 2010; 66:o363. [PMID: 21579787 PMCID: PMC2979797 DOI: 10.1107/s1600536810001066] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2009] [Accepted: 01/08/2010] [Indexed: 11/10/2022]
Abstract
In the title compound, C19H21Cl2NO4, the dihydropyridine ring adopts a flattened boat conformation. The dichlorophenyl ring is oriented almost perpendicular to the planar part of the dihydropyridine ring [dihedral angle = 89.1 (1)°]. An intramolecular C—H⋯O hydrogen bond is observed. In the crystal structure, molecules are linked into chains along the b axis by N—H⋯O hydrogen bonds
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Pei W, Wang Q, Li X, Sun L. Synthesis of 1,4-Dihydropyridines Using Ce(SO4)2-SiO2as Catalyst under Solvent-free Conditions. CHINESE J CHEM 2010. [DOI: 10.1002/cjoc.201090101] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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33
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Mirza‐Aghayan M, Langrodi MK, Rahimifard M, Boukherroub R. Me3SiCl and Et3SiI‐promoted one‐pot synthesis of 1,4‐dihydropyridine derivatives. Appl Organomet Chem 2009. [DOI: 10.1002/aoc.1509] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Bazargan L, Shafiee A, Amini M, Dezfouli EB, Azizi E, Ghaffari SM. Synthesis of New 1,4-Dihydropyridine Derivatives Containing Thiazolyl Substituents. PHOSPHORUS SULFUR 2009. [DOI: 10.1080/10426500802239529] [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)
- Leila Bazargan
- a Institute of Biochemistry and Biophysics, Tehran University , Tehran, Iran
| | - Abbas Shafiee
- b Department of Medicinal Chemistry, Faculty of Pharmacy and Pharmaceutical Sciences Research Center , Tehran University of Medical Sciences , Tehran, Iran
| | - Mohsen Amini
- b Department of Medicinal Chemistry, Faculty of Pharmacy and Pharmaceutical Sciences Research Center , Tehran University of Medical Sciences , Tehran, Iran
| | - Ebrahim Bakhshi Dezfouli
- b Department of Medicinal Chemistry, Faculty of Pharmacy and Pharmaceutical Sciences Research Center , Tehran University of Medical Sciences , Tehran, Iran
| | - Ebrahim Azizi
- c Department of Toxicology and Pharmacology, Faculty of Pharmacy and Pharmaceutical Sciences Research Center , Tehran University of Medical Sciences , Tehran, Iran
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Kormos CM, Hull RM, Leadbeater NE. Microwave Heating in Conjunction with UV Irradiation: a Tool for the Oxidation of 1,4-Dihydropyridines to Pyridines. Aust J Chem 2009. [DOI: 10.1071/ch08414] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Microwave heating is used for the preparation of 1,4-dihydropyridines and then, in conjunction with UV irradiation, is used for the efficient oxidation of the 1,4-dihydropyridines to pyridines. The oxidation reactions are performed in a sealed vessel using oxygen as the oxidant and an electrodeless discharge lamp as the irradiation source.
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37
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Shi DQ, Yu CX, Zhuang QY. Three-Component One-Pot Synthesis of Unsymmetrical 1,4-dihydropyridine Derivatives in Aqueous Media. JOURNAL OF CHEMICAL RESEARCH 2008. [DOI: 10.3184/030823408x339791] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
A series of methyl ethyl 2,6-dimethyl-4-substituted-1,4-dihydropyridine-3,5-dicarboxylates were synthesised by the three-component reaction of aldehydes, ethyl acetoacetate and methyl β-aminocrotonate in the presence of triethylbenzylammonium chloride (TEBAC) in aqueous medium. This method has the advantage of good yields.
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Affiliation(s)
- Da-Qing Shi
- College of Chemistry and Chemical Engineering, Key Laboratory of Organic Synthesis of Jiangsu Province, Suzhou University, Suzhou 215123, P.R. China
- College of Chemistry and Chemical Engineering, Xuzhou Normal University, Xuzhou 221116, P.R. China
| | - Chen-Xia Yu
- College of Chemistry and Chemical Engineering, Xuzhou Normal University, Xuzhou 221116, P.R. China
| | - Qi-Ya Zhuang
- College of Chemistry and Chemical Engineering, Xuzhou Normal University, Xuzhou 221116, P.R. China
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38
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Bridgwood KL, Veitch GE, Ley SV. Magnesium nitride as a convenient source of ammonia: preparation of dihydropyridines. Org Lett 2008; 10:3627-9. [PMID: 18642824 DOI: 10.1021/ol801399w] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Magnesium nitride (Mg 3N 2) has been investigated for the preparation of dihydropyridines. This is a commercially available, bench-stable solid that generates ammonia upon treatment with protic solvents. The main features of the process are the facile reaction setup and good yields obtained in the majority of cases.
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Affiliation(s)
- Katy L Bridgwood
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB5 8BQ, UK
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39
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Bogdal D, Loupy A. Application of Microwave Irradiation to Phase-Transfer Catalyzed Reactions. Org Process Res Dev 2008. [DOI: 10.1021/op8000542] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Dariusz Bogdal
- Faculty of Chemical Engineering and Technology, Politechnika Krakowska, ul. Warszawska 24, 31-155 Krakow, Poland, and Laboratoire des Réactions Sélectives sur Supports, CNRS UMR 8615, Universite Paris-Sud, batiment 410, 91405 Orsay Cedex, France
| | - André Loupy
- Faculty of Chemical Engineering and Technology, Politechnika Krakowska, ul. Warszawska 24, 31-155 Krakow, Poland, and Laboratoire des Réactions Sélectives sur Supports, CNRS UMR 8615, Universite Paris-Sud, batiment 410, 91405 Orsay Cedex, France
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Sharma M, Agarwal N, Rawat DS. Barium nitrate catalyzed one pot synthesis of 1,4-dihydropyridines under solvent free conditions at room temperature. J Heterocycl Chem 2008. [DOI: 10.1002/jhet.5570450316] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Fasani E, Albini A, Gemme S. Mechanism of the photochemical degradation of amlodipine. Int J Pharm 2008; 352:197-201. [DOI: 10.1016/j.ijpharm.2007.10.040] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2006] [Revised: 10/22/2007] [Accepted: 10/25/2007] [Indexed: 10/22/2022]
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Affiliation(s)
- Doris Dallinger
- Christian Doppler Laboratory for Microwave Chemistry (CDLMC) and Institute of Chemistry, Karl-Franzens-University Graz, Heinrichstrasse 28, A-8010 Graz, Austria
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Sulfated zirconia-catalyzed synthesis of 3,4-dihydropyrimidin-2(1H)-ones (DHPMs) under solventless conditions: competitive multicomponent Biginelli vs. Hantzsch reactions. Molecules 2006; 11:731-8. [PMID: 17971749 DOI: 10.3390/11100731] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2006] [Accepted: 09/27/2006] [Indexed: 11/16/2022] Open
Abstract
The catalytic ability of ZrO(2)/SO(4)(2-) to promote solventless three-component condensation reactions of a diversity of aromatic aldehydes, urea or thoiurea and ethyl acetoacetate was studied. Products resulting from Hantzsch and/or Biginelli multi-component reactions are obtained in the presence of solid acid catalysts using the same reactants but different temperature conditions. The sulfated zirconia catalyst can be recovered and recycled in subsequent reactions with a gradual decrease of activity.
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