1
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Abdelwahab RE, Abdelhamid IA, Elwahy AHM, Abdelmoniem AM. Synthesis of novel acridines, tetrahydrodipyrazolo [3,4- b:4',3'- e]pyridines, tri-substituted methanes (TRSMs) bearing 2-(4-(1-phenyl-1 H-pyrazol-3-yl)phenoxy)- N-phenylacetamide unit as novel hybrid molecules. SYNTHETIC COMMUN 2023. [DOI: 10.1080/00397911.2023.2190462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023]
Affiliation(s)
| | | | - Ahmed H. M. Elwahy
- Department of Chemistry, Faculty of Science, Cairo University, Giza, Egypt
| | - Amr M. Abdelmoniem
- Department of Chemistry, Faculty of Science, Cairo University, Giza, Egypt
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2
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Elwahy AHM, Ginidi ARS, Shaaban MR, Farag AM, Salem ME. Synthesis of novel bis-thiazoles, bis-thienopyridines, and bis-triazolothiadiazines linked to diphenyl ether core as novel hybrid molecules. SYNTHETIC COMMUN 2023. [DOI: 10.1080/00397911.2023.2179405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
Affiliation(s)
- Ahmed H. M. Elwahy
- Department of Chemistry, Faculty of Science, Cairo University, Giza, Egypt
| | - Ahmed R. S. Ginidi
- Department of Chemistry, Faculty of Science, Cairo University, Giza, Egypt
| | - Mohamed R. Shaaban
- Department of Chemistry, Faculty of Science, Cairo University, Giza, Egypt
| | - Ahmed M. Farag
- Department of Chemistry, Faculty of Science, Cairo University, Giza, Egypt
| | - Mostafa E. Salem
- Department of Chemistry, College of Science, Imam Mohammad Ibn Saud Islamic University (IMSIU), Riyadh, Saudi Arabia
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3
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Mahmoud HK, Selim NHM, Elwahy AHM, Abdelhamid IA, Diab HM. Microwave-Assisted Hantzsch-Like Synthesis of Novel Bis(Tetrahydrobenzo[4,5]Imidazo[2,1- b]Quinazolinones). Polycycl Aromat Compd 2022. [DOI: 10.1080/10406638.2022.2151476] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Huda Kamel Mahmoud
- Department of Chemistry, Faculty of Science, Cairo University, Giza, Egypt
| | | | - Ahmed H. M. Elwahy
- Department of Chemistry, Faculty of Science, Cairo University, Giza, Egypt
| | | | - Hadeer M. Diab
- Department of Chemistry, Faculty of Science, Cairo University, Giza, Egypt
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4
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Salem ME, Qenawy MS, Farag AM, Elwahy AHM. Synthesis of novel scaffolds based on bis-thiazole or bis-triazolothiadiazine linked to quinoxaline as new hybrid molecules. SYNTHETIC COMMUN 2022. [DOI: 10.1080/00397911.2022.2153338] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Mostafa E. Salem
- Chemistry Department, Faculty of Science, Cairo University, Giza, Egypt
| | - Mohmmad S. Qenawy
- Chemistry Department, Faculty of Science, Cairo University, Giza, Egypt
| | - Ahmed M. Farag
- Chemistry Department, Faculty of Science, Cairo University, Giza, Egypt
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5
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Patrina АN, Veretennikova ЕА, Khamidullina LА, Puzyrev IS, Tobysheva PD, Slepukhin PА, Zhilina EF, Pestov АV. Effect of Noncovalent Interactions on the Properties of α,ω-Bis(2-acetylphenoxy)alkanes Depending on the Size of the Polymethylene Linker. RUSS J GEN CHEM+ 2022. [DOI: 10.1134/s1070363222110329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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6
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Aggarwal R, Hooda M, Kumar P, Sumran G. Vision on Synthetic and Medicinal Facets of 1,2,4-Triazolo[3,4-b][1,3,4]thiadiazine Scaffold. Top Curr Chem (Cham) 2022; 380:10. [PMID: 35122161 PMCID: PMC8816708 DOI: 10.1007/s41061-022-00365-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Accepted: 01/11/2022] [Indexed: 11/28/2022]
Abstract
The present review article strives to compile the latest synthetic approaches for the synthesis of triazolothiadiazine and its derivatives, along with their diverse pharmacological activities, viz. anticancer, antimicrobial, analgesic and anti-inflammatory, antioxidant, antiviral, enzyme inhibitors (carbonic anhydrase inhibitors, cholinesterase inhibitors, alkaline phosphatase inhibitors, anti-lipase activity, and aromatase inhibitors) and antitubercular agents. The review focuses particularly on the structure–activity relationship of biologically important 1,2,4-triazolo[3,4-b][1,3,4]thiadiazines, which have profound importance in drug design, discovery and development. In silico pharmacokinetic and molecular modeling studies have also been summarized. It is hoped that this review article will be of help to researchers engaged in the development of new biologically active entities for the rational design and development of new target-oriented 1,2,4-triazolo[3,4-b][1,3,4]thiadiazine-based drugs for the treatment of multifunctional diseases.
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Affiliation(s)
- Ranjana Aggarwal
- Department of Chemistry, Kurukshetra University, Kurukshetra, 136 119, India. .,CSIR-National Institute of Science Communication and Policy Research, New Delhi, India.
| | - Mona Hooda
- Department of Chemistry, Kurukshetra University, Kurukshetra, 136 119, India
| | - Prince Kumar
- Department of Chemistry, Kurukshetra University, Kurukshetra, 136 119, India
| | - Garima Sumran
- Department of Chemistry, D. A. V. College (Lahore), Ambala City, Haryana, 134 003, India
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7
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Diab HM, Salem ME, Abdelhamid IA, Elwahy AHM. Hantzsch-like synthesis of bis(sulfanediyl)bis(tetrahydropyrimido[4,5-b]quinoline-4,6-diones) linked to arene or heteroarene cores utilizing bis(sulfanediyl)bis(6-aminopyrimidin-4-ones) as precursors. MONATSHEFTE FUR CHEMIE 2021. [DOI: 10.1007/s00706-021-02825-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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8
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Sanad SMH, Mekky AEM. Efficient synthesis and characterization of novel bis(chromenes) and bis(benzo[f]chromenes) linked to thiazole units. SYNTHETIC COMMUN 2020. [DOI: 10.1080/00397911.2020.1846748] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
| | - Ahmed E. M. Mekky
- Chemistry Department, Faculty of Science, Cairo University, Giza, Egypt
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9
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Hebishy AMS, Abdelfattah MS, Elmorsy A, Elwahy AHM. Novel bis(thiazolidin-4-ones) linked to aliphatic or aromatic spacers: synthesis, characterization, and anticancer evaluation. J Sulphur Chem 2020. [DOI: 10.1080/17415993.2020.1823978] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Ali M. S. Hebishy
- Chemistry Department, Faculty of Science, Helwan University, Cairo, Egypt
| | | | - Abdullah Elmorsy
- Chemistry Department, Faculty of Science, Helwan University, Cairo, Egypt
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10
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Eid EM, Hassaneen HME, Abdelhamid IA, Elwahy AHM. Facile one‐pot, three‐component synthesis of novel bis(heterocycles) incorporating thieno[2,3‐
b
]thiophenes via Michael addition reaction. J Heterocycl Chem 2020. [DOI: 10.1002/jhet.3945] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Elshimaa M. Eid
- Chemistry Department, Faculty of Science Cairo University Giza Egypt
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11
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Hebishy AMS, Abdelfattah MS, Elmorsy A, Elwahy AHM. Synthesis of novel bis‐ and poly(benzimidazoles) as well as bis‐ and poly(benzothiazoles) as anticancer agents. J Heterocycl Chem 2020. [DOI: 10.1002/jhet.3947] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Ali M. S. Hebishy
- Chemistry Department, Faculty of ScienceHelwan University Cairo Egypt
| | | | - Abdullah Elmorsy
- Chemistry Department, Faculty of ScienceHelwan University Cairo Egypt
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12
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Hebishy AMS, Abdelfattah MS, Elmorsy A, Elwahy AHM. ZnO nanoparticles catalyzed synthesis of bis- and poly(imidazoles) as potential anticancer agents. SYNTHETIC COMMUN 2020. [DOI: 10.1080/00397911.2020.1726396] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Ali M. S. Hebishy
- Chemistry Department, Faculty of Science, Helwan University, Cairo, Egypt
| | | | - Abdullah Elmorsy
- Chemistry Department, Faculty of Science, Helwan University, Cairo, Egypt
| | - Ahmed H. M. Elwahy
- Chemistry Department, Faculty of Science, Cairo University, Giza, Egypt
- Department of Chemistry, Faculty of Applied Sciences, Umm Al-Qura University, Makkah, Saudi Arabia
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13
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Ahmed AAM, Mekky AEM, Elwahy AHM, Sanad SMH. Facile synthesis and characterization of novel benzo-fused macrocyclic dicarbonitriles and pyrazolo-fused macrocycles containing thiazole subunits. SYNTHETIC COMMUN 2020. [DOI: 10.1080/00397911.2019.1689269] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Ahmed A. M. Ahmed
- Chemistry Department, Faculty of Science, Cairo University, Giza, Egypt
- Preparatory Year Deanship, Jouf University, Sakaka, Kingdom of Saudi Arabia
| | - Ahmed E. M. Mekky
- Chemistry Department, Faculty of Science, Cairo University, Giza, Egypt
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14
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Salem ME, Darweesh AF, Elwahy AHM. Synthesis of novel scaffolds based on thiazole or triazolothiadiazine linked to benzofuran or benzo[d]thiazole moieties as new hybrid molecules. SYNTHETIC COMMUN 2019. [DOI: 10.1080/00397911.2019.1694689] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Mostafa E. Salem
- Chemistry Department, Faculty of Science, Cairo University, Giza, Egypt
| | - Ahmed F. Darweesh
- Chemistry Department, Faculty of Science, Cairo University, Giza, Egypt
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15
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Salama SK, Darweesh AF, Abdelhamid IA, Elwahy AHM. p-TSA Catalyzed One-Pot Synthesis of Some Novel Bis(Hexahydroacridine-1,8-Diones) and Bis(Tetrahydrodipyrazolo[3,4-b:4′,3′-e]Pyridines) Derivatives. Polycycl Aromat Compd 2019. [DOI: 10.1080/10406638.2019.1678184] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Soad K. Salama
- Chemistry Department, Faculty of Science, Cairo University, Giza, Egypt
| | - Ahmed F. Darweesh
- Chemistry Department, Faculty of Science, Cairo University, Giza, Egypt
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16
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Mekky AEM, Sanad SMH, Ahmed AAM. Microwave Assisted Three Component One‐pot Synthesis of Bis(aminoazolo[1,5‐
a
]pyrimidines) and Bis(aminoazino[1,2‐
a
]benzimidazoles) Bearing Thiazole Moiety. ChemistrySelect 2019. [DOI: 10.1002/slct.201902828] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Ahmed E. M. Mekky
- Chemistry DepartmentFaculty of ScienceCairo University Giza 12613 Egypt
| | | | - Ahmed A. M. Ahmed
- Chemistry DepartmentFaculty of ScienceCairo University Giza 12613 Egypt
- Preparatory Year DeanshipJouf University Sakaka, KSA
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17
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Salem ME, Ahmed AA, Darweesh AF, Kühn O, Elwahy AH. Synthesis and DFT calculations of 2-thioxo-1,2-dihydropyridine-3-carbonitrile as versatile precursors for novel pharmacophoric hybrid molecules. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2018.08.031] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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18
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Hosny M, Salem ME, Darweesh AF, Elwahy AHM. Synthesis of Novel Bis(thiazolylchromen-2-one) Derivatives Linked to Alkyl Spacer via
Phenoxy Group. J Heterocycl Chem 2018. [DOI: 10.1002/jhet.3296] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Mohamed Hosny
- Chemistry Department, Faculty of Science; Cairo University; Giza Egypt
| | - Mostafa E. Salem
- Chemistry Department, Faculty of Science; Cairo University; Giza Egypt
| | - Ahmed F. Darweesh
- Chemistry Department, Faculty of Science; Cairo University; Giza Egypt
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19
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Salem ME, Darweesh AF, Elwahy AHM. 2-Mercapto-4,6-disubstituted nicotinonitriles: versatile precursors for novel mono- and bis[thienopyridines]. J Sulphur Chem 2018. [DOI: 10.1080/17415993.2018.1471143] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Mostafa E. Salem
- Department of Chemistry, Faculty of Science, Cairo University, Giza, Egypt
| | - Ahmed F. Darweesh
- Department of Chemistry, Faculty of Science, Cairo University, Giza, Egypt
| | - Ahmed H. M. Elwahy
- Department of Chemistry, Faculty of Science, Cairo University, Giza, Egypt
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20
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Abdelmoniem AM, Salaheldin TA, Abdelhamid IA, Elwahy AHM. New Bis(dihydropyridine-3,5-dicarbonitrile) Derivatives: Green Synthesis and Cytotoxic Activity Evaluation. J Heterocycl Chem 2017. [DOI: 10.1002/jhet.2867] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
| | - Taher A. Salaheldin
- Nanotechnology & Advanced Materials Central Lab; Agriculture Research Centre; Cairo 12631 Egypt
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21
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Abdelmoniem AM, Ghozlan SAS, Abdelmoniem DM, Elwahy AHM, Abdelhamid IA. Facile One-pot, Three-component Synthesis of Novel Bis-heterocycles Incorporating 5H-chromeno[2,3-b]pyridine-3-carbonitrile Derivatives. J Heterocycl Chem 2017. [DOI: 10.1002/jhet.2890] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Amr M. Abdelmoniem
- Department of Chemistry, Faculty of Science; Cairo University; 12613 Giza Egypt
| | - Said A. S. Ghozlan
- Department of Chemistry, Faculty of Science; Cairo University; 12613 Giza Egypt
| | - Doaa M. Abdelmoniem
- Department of Chemistry, Faculty of Science; Cairo University; 12613 Giza Egypt
| | - Ahmed H. M. Elwahy
- Department of Chemistry, Faculty of Science; Cairo University; 12613 Giza Egypt
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22
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Molecular docking simulation and anticancer assessment on human breast carcinoma cell line using novel bis(1,4-dihydropyrano[2,3- c ]pyrazole-5-carbonitrile) and bis(1,4-dihydropyrazolo[4′,3′:5,6]pyrano[2,3- b ]pyridine-6-carbonitrile) derivatives. Bioorg Chem 2017; 71:19-29. [DOI: 10.1016/j.bioorg.2017.01.009] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2016] [Revised: 11/10/2016] [Accepted: 01/15/2017] [Indexed: 01/09/2023]
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23
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Abdella AM, Moatasim Y, Ali MA, Elwahy AHM, Abdelhamid IA. Synthesis and Anti‐influenza Virus Activity of Novel bis(4
H
‐chromene‐3‐carbonitrile) Derivatives. J Heterocycl Chem 2016. [DOI: 10.1002/jhet.2776] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Amna M. Abdella
- Chemistry Department, Faculty of ScienceCairo University Giza Egypt
| | - Yassmin Moatasim
- Center of Scientific Excellence for Influenza VirusesNational Research Centre Giza Egypt
| | - Mohamed A. Ali
- Center of Scientific Excellence for Influenza VirusesNational Research Centre Giza Egypt
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24
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Mohamed MF, Darweesh AF, Elwahy AHM, Abdelhamid IA. Synthesis, characterization and antitumor activity of novel tetrapodal 1,4-dihydropyridines: p53 induction, cell cycle arrest and low damage effect on normal cells induced by genotoxic factor H2O2. RSC Adv 2016. [DOI: 10.1039/c6ra04974e] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
Synthesis of novel tetrakis(2,6-dimethyl-4-phenyl-1,4-dihydropyridinyl)methanes5a–dby acid-catalyzed condensation of the tetrakis-aldehydes6a–dwith eight equivalents of 3-aminobut-2-enenitrile2is reported. Antitumor activities of compounds5a–dwere also investigated.
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Affiliation(s)
- Magda F. Mohamed
- Chemistry Department (Biochemistry Branch)
- Faculty of Science
- Cairo University
- Giza
- Egypt
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25
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H. M. Elwahy A, A. Abdelhamid I, M. H. Sanad S, M. Kassab R. Microwave Assisted Multi-Component Synthesis of Novel Bis(1,4-dihydropyridines) Based Arenes or Heteroarenes. HETEROCYCLES 2016. [DOI: 10.3987/com-16-13441] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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26
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Hamama WS, El-Bana GG, Shaaban S, Habib OMO, Zoorob HH. Advances in the domain of 4-amino-3-mercapto-1,2,4-triazine-5-ones. RSC Adv 2016. [DOI: 10.1039/c5ra26433b] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
This review summarizes results from a literature survey concerning the synthesis and reactions of 4-amino-3-mercapto-1,2,4-triazine-5-ones reported by research groups from 1983 to mid. 2015.
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Affiliation(s)
- Wafaa S. Hamama
- Department of Chemistry
- Faculty of Science
- Mansoura University
- Mansoura
- Egypt
| | - Ghada G. El-Bana
- Department of Chemistry
- Faculty of Science
- Mansoura University
- Mansoura
- Egypt
| | - Saad Shaaban
- Department of Chemistry
- Faculty of Science
- Mansoura University
- Mansoura
- Egypt
| | - O. M. O. Habib
- Department of Chemistry
- Faculty of Science
- Mansoura University
- Mansoura
- Egypt
| | - Hanafi H. Zoorob
- Department of Chemistry
- Faculty of Science
- Mansoura University
- Mansoura
- Egypt
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27
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Kalinina TA, Bystrykh OA, Glukhareva TV, Morzherin YY. Transformation of 1,2,3-Thiadiazolyl Hydrazones as Method for Preparation of 1,2,3-Triazolo[5,1-b][1,3,4]thiadiazines. J Heterocycl Chem 2015. [DOI: 10.1002/jhet.2554] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Tatiana A. Kalinina
- Department of Organic Chemical Technology; Ural Federal University Named After the First President of Russia B. N. Yeltsin; 19 Mira str. Ekaterinburg 620002 Russia
| | - Olga A. Bystrykh
- Department of Organic Chemical Technology; Ural Federal University Named After the First President of Russia B. N. Yeltsin; 19 Mira str. Ekaterinburg 620002 Russia
| | - Tatiana V. Glukhareva
- Department of Organic Chemical Technology; Ural Federal University Named After the First President of Russia B. N. Yeltsin; 19 Mira str. Ekaterinburg 620002 Russia
| | - Yuri Yu. Morzherin
- Department of Organic Chemical Technology; Ural Federal University Named After the First President of Russia B. N. Yeltsin; 19 Mira str. Ekaterinburg 620002 Russia
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28
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Abdel-Wahab BF, Althagafi I. Recent Progress in the Synthetic Routes to Triazolothiadiazines. PHOSPHORUS SULFUR 2014. [DOI: 10.1080/10426507.2014.902834] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Bakr F. Abdel-Wahab
- Applied Organic Chemistry Department, National Research Centre, Dokki, 12622 Giza, Egypt
| | - Ismail Althagafi
- University College of Algomom, Chemistry Department, Umm Alqura University, Saudi Arabia
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29
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Ginidi ARS, Shaaban MR, Farag AM, Elwahy AHM. Bis(α-bromo ketones): Versatile Precursors for Novel Bis(s-triazolo[3,4-b][1,3,4]thiadiazines) and Bis(thiazoles). J Heterocycl Chem 2014. [DOI: 10.1002/jhet.2223] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Ahmed R. S. Ginidi
- Faculty of Science, Department of Chemistry; Cairo University; Giza Egypt
| | - Mohamed R. Shaaban
- Faculty of Science, Department of Chemistry; Cairo University; Giza Egypt
- Faculty of Applied Science, Department of Chemistry; Umm Al-Qura University; Makkah Almukkarramah Saudi Arabia
| | - Ahmad M. Farag
- Faculty of Science, Department of Chemistry; Cairo University; Giza Egypt
| | - Ahmed H. M. Elwahy
- Faculty of Science, Department of Chemistry; Cairo University; Giza Egypt
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30
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Sarhan RM, Badawy MA, Elwahy AHM. Efficient Routes for the Synthesis of Novel Bis(s-triazolo[3,4-b][1,3,4]thiadiazines). J Heterocycl Chem 2014. [DOI: 10.1002/jhet.1854] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Radwan M. Sarhan
- Chemistry Department, Faculty of Science; Cairo University; Giza Egypt
| | - Mohamed A. Badawy
- Chemistry Department, Faculty of Science; Cairo University; Giza Egypt
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31
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Shaaban MR. Microwave assisted synthesis of bis and tris(ω-bromoacetophenones): versatile precursors for novel bis(imidazo[1,2-a]pyridines), bis(imidazo[1,2-a]pyrimidines) and their tris-analogs. Chem Cent J 2013; 7:105. [PMID: 23782550 PMCID: PMC3698004 DOI: 10.1186/1752-153x-7-105] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2013] [Accepted: 05/20/2013] [Indexed: 11/23/2022] Open
Abstract
Background α-Bromination of the side chain of aromatic ketones using NBS in the presence of p-toluenesulfonic acid (p-TsOH) in acetonitrile is very common. However, regioselective bromination of bis and tris(ω-bromoacetophenones) with NBS in the presence of p-TsOH in acetonitrile under microwave irradiation is quite novel. The bis- and tris(ω-bromoacetophenones) are used in synthesis of bis and tris(heterocycles). bis(heterocycles) have received a great deal of attention, because many biologically active natural and synthetic products have molecular symmetry. The use of the pressurized microwave irradiation is very advantageous to many syntheses and provide a large rate enhancement. Results Bis and tris(ω-bromoacetophenones) were obtained as single monobrominated derivatives in a shorter time than the conventional conditions. The results clearly demonstrate the better reactivity and selectivity of NBS/p-TsOH/CH3CN as a brominating mixture under microwave conditions. The reaction of bis and tris(ω-bromoacetophenone) with 2-aminopyridine and 2-aminopyrimidine proceeded smoothly in a mixture of anhydrous ethanol and DMF under reflux or using 300 W/105°C/ 20 min microwave irradiation conditions to afford the corresponding bis(imidazo[1,2-a]pyridine), bis(imidazo[1,2-a]pyrimidine) and tris(imidazo[1,2-a]pyridine) derivatives in moderate to excellent yields. The carbonyl analogue of the targeted bis(imidazopyridines) could be synthesized by the reaction of N,N-dimethyl-N'-(pyridin-2-yl)formimidamide with bis(ω-bromoacetophenone) in refluxing ethanol. The structures of the newly synthesized compounds were confirmed by their spectral data as well as their elemental analyses. Conclusion In conclusion, selective α-bromination of bis- and tris(acetophenones) has been accomplished efficiently utilizing NBS/p-TsOH/CH3CN under microwave irradiation. In addition, a facile synthesis of novel series of bis- and tris(imidazopyridine) and bis(imidazopyrimidine) derivatives.
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Affiliation(s)
- Mohamed R Shaaban
- Department of Chemistry, Faculty of Science, Cairo University, Giza, Egypt.
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