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Moutaouakil M, Roby O, Tighadouini S, Cherif A, El Aatiaoui A, Saddik R. Investigating catalytic pathways: a comparative review of homogeneous and heterogeneous catalysis for 3-aroylimidazo[1,2-a]pyridine synthesis. Mol Divers 2023:10.1007/s11030-023-10765-w. [PMID: 38042761 DOI: 10.1007/s11030-023-10765-w] [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: 04/14/2023] [Accepted: 11/03/2023] [Indexed: 12/04/2023]
Abstract
3-aroylimidazo[1,2-a]pyridines represent a class of derivatives in the imidazo[1,2-a]pyridine family known for their important biological and pharmaceutical activities. Consequently, various methodologies have been designed to simplify the synthesis of this structure, with an emphasis on the use of cost-effective starting materials and environmentally friendly protocols. All the methods developed in recent years (from 2016 to 2023) rely on homogeneous or heterogeneous catalysts. Therefore, we aim to perform a comparative analysis between these two approaches, elucidating their respective advantages and limitations. The first part of this work focuses on techniques employing homogeneous catalysts, followed by the next section devoted to heterogeneous catalysts. This comprehensive review should be of substantial interest to researchers in the fields of organic and medicinal chemistry, as it provides a valuable resource for their research.
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Affiliation(s)
- Mohamed Moutaouakil
- Laboratory of Organic Synthesis, Extraction, and Valorization, Faculty of Sciences Ain Chock, Hassan II University, 20000, Casablanca, Morocco.
| | - Othmane Roby
- Laboratory of Organic Synthesis, Extraction, and Valorization, Faculty of Sciences Ain Chock, Hassan II University, 20000, Casablanca, Morocco
| | - Said Tighadouini
- Laboratory of Organic Synthesis, Extraction, and Valorization, Faculty of Sciences Ain Chock, Hassan II University, 20000, Casablanca, Morocco
| | - Abdelmjid Cherif
- Laboratory of Materials Engineering for Environment and Valorization, Faculty of Sciences Ain Chock, Hassan II University, 20000, Casablanca, Morocco
| | - Abdelmalik El Aatiaoui
- Laboratory of Molecular Chemistry, Materials and Environment (LCM2E), Department of Chemistry, Multidisciplinary Faculty of Nador, Mohamed I University, Nador, Morocco
| | - Rafik Saddik
- Laboratory of Organic Synthesis, Extraction, and Valorization, Faculty of Sciences Ain Chock, Hassan II University, 20000, Casablanca, Morocco
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2
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Moutaouakil M, Tighadouini S, Saddik R. New Methods for the Synthesis of 3-Aroylimidazo[1,2-a]Pyridines: A Review. Polycycl Aromat Compd 2022. [DOI: 10.1080/10406638.2022.2138925] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Mohamed Moutaouakil
- Department of Chemistry, Faculty of Sciences Ain Chock, Laboratory of Organic Synthesis, Extraction, and Valorization, Hassan II University of Casablanca, Casablanca, Morocco
| | - Said Tighadouini
- Department of Chemistry, Faculty of Sciences Ain Chock, Laboratory of Organic Synthesis, Extraction, and Valorization, Hassan II University of Casablanca, Casablanca, Morocco
| | - Rafik Saddik
- Department of Chemistry, Faculty of Sciences Ain Chock, Laboratory of Organic Synthesis, Extraction, and Valorization, Hassan II University of Casablanca, Casablanca, Morocco
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3
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Kumbhar VV, Khairnar BB, Chaskar MG, Pawar RA, Gugale GS. Synthetic strategies in development of 3-aroylimidazo[1,2-a]pyridines and 2-aroylimidazo[1,2-a]pyridines: A decade update. SYNTHETIC COMMUN 2022. [DOI: 10.1080/00397911.2022.2056057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Vikrant V. Kumbhar
- Department of Chemistry, PDEA’s Prof. Ramkrishna More College, Pune, India
- Interdisciplinary School of Science (IDSS), Savitribai Phule Pune University, Pune, India
| | - Bhushan B. Khairnar
- Department of Chemistry, PDEA’s Prof. Ramkrishna More College, Pune, India
- Interdisciplinary School of Science (IDSS), Savitribai Phule Pune University, Pune, India
| | - Manohar G. Chaskar
- Department of Chemistry, PDEA’s Prof. Ramkrishna More College, Pune, India
| | - Ramdas A. Pawar
- Department of Chemistry, PDEA’s Prof. Ramkrishna More College, Pune, India
| | - Gulab S. Gugale
- Department of Chemistry, PDEA’s Prof. Ramkrishna More College, Pune, India
- Department of Chemistry, Haribhai V. Desai College, Pune, India
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4
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Panda J, Raiguru BP, Mishra M, Mohapatra S, Nayak S. Recent Advances in the Synthesis of Imidazo[1,2‐
a
]pyridines: A Brief Review. ChemistrySelect 2022. [DOI: 10.1002/slct.202103987] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Jasmine Panda
- Organic Synthesis Laboratory Department of Chemistry Ravenshaw University Cuttack 753003 Odisha India
| | - Bishnu P. Raiguru
- Organic Synthesis Laboratory Department of Chemistry Ravenshaw University Cuttack 753003 Odisha India
| | - Mitali Mishra
- Organic Synthesis Laboratory Department of Chemistry Ravenshaw University Cuttack 753003 Odisha India
| | - Seetaram Mohapatra
- Organic Synthesis Laboratory Department of Chemistry Ravenshaw University Cuttack 753003 Odisha India
| | - Sabita Nayak
- Organic Synthesis Laboratory Department of Chemistry Ravenshaw University Cuttack 753003 Odisha India
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5
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Iodine-induced coupling reaction forms C–S and C–N bonds to construct 3,4-heteroatom-Functionalized maleimides. Tetrahedron 2021. [DOI: 10.1016/j.tet.2021.132246] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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6
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Guchhait SK, Saini M, Khivsara VJ, Giri SK. Annulation of Conjugated Azine-Imine with a Sulfoxonium Ylide in a Noncarbenoid Route to Synthesize Multisubstituted Imidazole-Fused Heterocycles. J Org Chem 2021; 86:5380-5387. [PMID: 33759525 DOI: 10.1021/acs.joc.1c00052] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
A new [4+1]-annulation of in situ generated heterocyclic azine-aldimines with β-keto sulfoxonium ylides has been developed. The reaction constructs N-fused imidazole rings. In the reaction, the ylides play a dual-functional role of a nucleophilic 1,1-dipolar one-carbon synthon and a source of an internal oxidant, dimethyl sulfoxide, that promotes in situ dehydrogenation to product scaffolds. The method enables access to imidazo-pyridine, pyrazine, and pyrimidine heteroaromatics.
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Affiliation(s)
- Sankar K Guchhait
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Sector 67, SAS Nagar, Mohali, Punjab 160062, India
| | - Meenu Saini
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Sector 67, SAS Nagar, Mohali, Punjab 160062, India
| | - Viren J Khivsara
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Sector 67, SAS Nagar, Mohali, Punjab 160062, India
| | - Santosh K Giri
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Sector 67, SAS Nagar, Mohali, Punjab 160062, India
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7
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Jadhav PM, Rode AB, Kótai L, Pawar RP, Tekale SU. Revisiting applications of molecular iodine in organic synthesis. NEW J CHEM 2021. [DOI: 10.1039/d1nj02560k] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Molecular iodine contributes significantly to organic transformations in synthetic organic chemistry. It works effectively due to its mild Lewis acidic character, ability as an oxidizing agent, good moisture stability, and easy availability.
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Affiliation(s)
- Popat M. Jadhav
- Department of Chemistry, Deogiri College, Aurangabad 431 005, Maharashtra, India
| | - Ambadas B. Rode
- Regional Centre for Biotechnology, Faridabad-121 001, Haryana (NCR Delhi), India
| | - László Kótai
- Research Centre for Natural Sciences, ELKH, H-1117, Budapest, Hungary
| | - Rajendra P. Pawar
- Department of Chemistry, Shiv Chhatrapati College, Aurangabad 431005, Maharashtra, India
| | - Sunil U. Tekale
- Department of Chemistry, Deogiri College, Aurangabad 431 005, Maharashtra, India
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8
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Bagdi AK, Pattanayak P, Paul S, Mitra M, Choudhuri T, Sheikh AS. Application of Conjugated Carbonyls in the Synthesis of Heterocycles via Oxidative Cycloaddition and Cyclization Reactions. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000970] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Avik Kumar Bagdi
- Department of Chemistry University of Kalyani Kalyani 741235 India
| | | | - Suvam Paul
- Department of Chemistry University of Kalyani Kalyani 741235 India
| | - Mousree Mitra
- Department of Chemistry University of Kalyani Kalyani 741235 India
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9
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Singh M, Vaishali, Kumar S, Jamra R, Pandey SK, Singh V. A metal-free approach towards synthesis of β-carboline C1 substituted Pyrido(2,3-c)carbazole derivatives (nitramarine analogues) through A3-coupling and estimation of their light emitting properties. Tetrahedron 2020. [DOI: 10.1016/j.tet.2020.131640] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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10
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Dhameliya TM, Donga HA, Vaghela PV, Panchal BG, Sureja DK, Bodiwala KB, Chhabria MT. A decennary update on applications of metal nanoparticles (MNPs) in the synthesis of nitrogen- and oxygen-containing heterocyclic scaffolds. RSC Adv 2020; 10:32740-32820. [PMID: 35516511 PMCID: PMC9056690 DOI: 10.1039/d0ra02272a] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Accepted: 08/12/2020] [Indexed: 12/15/2022] Open
Abstract
Heterocycles have been found to be of much importance as several nitrogen- and oxygen-containing heterocycle compounds exist amongst the various USFDA-approved drugs. Because of the advancement of nanotechnology, nanocatalysis has found abundant applications in the synthesis of heterocyclic compounds. Numerous nanoparticles (NPs) have been utilized for several organic transformations, which led us to make dedicated efforts for the complete coverage of applications of metal nanoparticles (MNPs) in the synthesis of heterocyclic scaffolds reported from 2010 to 2019. Our emphasize during the coverage of catalyzed reactions of the various MNPs such as Ag, Au, Co, Cu, Fe, Ni, Pd, Pt, Rh, Ru, Si, Ti, and Zn has not only been on nanoparticles catalyzed synthetic transformations for the synthesis of heterocyclic scaffolds, but also provide an inherent framework for the reader to select a suitable catalytic system of interest for the synthesis of desired heterocyclic scaffold.
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Affiliation(s)
- Tejas M Dhameliya
- L. M. College of Pharmacy Navrangpura Ahmedabad 380 009 Gujarat India +91 79 2630 4865 +91 79 2630 2746
| | - Hiren A Donga
- L. M. College of Pharmacy Navrangpura Ahmedabad 380 009 Gujarat India +91 79 2630 4865 +91 79 2630 2746
| | - Punit V Vaghela
- L. M. College of Pharmacy Navrangpura Ahmedabad 380 009 Gujarat India +91 79 2630 4865 +91 79 2630 2746
| | - Bhoomi G Panchal
- L. M. College of Pharmacy Navrangpura Ahmedabad 380 009 Gujarat India +91 79 2630 4865 +91 79 2630 2746
| | - Dipen K Sureja
- L. M. College of Pharmacy Navrangpura Ahmedabad 380 009 Gujarat India +91 79 2630 4865 +91 79 2630 2746
| | - Kunjan B Bodiwala
- L. M. College of Pharmacy Navrangpura Ahmedabad 380 009 Gujarat India +91 79 2630 4865 +91 79 2630 2746
| | - Mahesh T Chhabria
- L. M. College of Pharmacy Navrangpura Ahmedabad 380 009 Gujarat India +91 79 2630 4865 +91 79 2630 2746
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11
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Rawat R, Verma SM. Advancements in chemical methodologies for the synthesis of 3-aroylimidazo[1,2-a]pyridines: an update of the decade. SYNTHETIC COMMUN 2020. [DOI: 10.1080/00397911.2020.1803915] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Ravi Rawat
- Division of Pharmaceutical Chemistry, Department of Pharmaceutical Sciences & Technology, Birla Institute of Technology, Ranchi, India
| | - Saurabh M. Verma
- Division of Pharmaceutical Chemistry, Department of Pharmaceutical Sciences & Technology, Birla Institute of Technology, Ranchi, India
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12
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A transition metal-free cascade reaction using heterogeneous tin(IV)oxide catalyzed and iodine promoted synthesis of 3-aroylimidazo[1,2-a]pyridines. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.152250] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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13
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Graphene oxide: an efficient carbocatalyst for the solvent-free synthesis of 2-(substituted benzoyl)-3-(substituted phenyl)imidazo[1,2-a]pyridines. J CHEM SCI 2019. [DOI: 10.1007/s12039-019-1702-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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14
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Bhutia Z, Das D, Chatterjee A, Banerjee M. Efficient and "Green" Synthetic Route to Imidazo[1,2- a]pyridine by Cu(II)-Ascorbate-Catalyzed A 3-Coupling in Aqueous Micellar Media. ACS OMEGA 2019; 4:4481-4490. [PMID: 31459643 PMCID: PMC6647986 DOI: 10.1021/acsomega.8b03581] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2018] [Accepted: 02/19/2019] [Indexed: 05/26/2023]
Abstract
An efficient and environmentally sustainable method for the synthesis of imidazo[1,2-a]pyridine derivatives by domino A3-coupling reaction catalyzed by Cu(II)-ascorbate was developed in aqueous micellar media in the presence of sodium dodecyl sulfate (SDS). The catalyst, a dynamic combination of Cu(II)/Cu(I), was generated in situ in the reaction mixture by mixing CuSO4 with sodium ascorbate and aided a facile 5-exo-dig cycloisomerization of alkynes with the condensation products of 2-aminopyridines and aldehydes to afford a variety of imidazo[1,2-a]pyridines in good overall yields. A simple experimental setup, water as the "green" medium, and inexpensive catalyst and auxiliary are some of the merits of this protocol.
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Affiliation(s)
| | | | | | - Mainak Banerjee
- E-mail: . Phone: +91-832-2580-347. Fax: +91-832-255-7031 (M.B.)
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15
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Zhang Y, Su J, Lin T, Lin Z, Zhou Z, Li Y. Iodine/K 2CO 3-catalyzed synthesis of multisubstituted pyrrolidine-2-carboxylates via a one-pot reaction between an araldehyde, an amino acid ester, and a chalcone. JOURNAL OF CHEMICAL RESEARCH 2019. [DOI: 10.1177/1747519819832108] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
A series of more than 20 multisubstituted pyrrolidine-2-carboxylates were synthesized via a one-pot cycloaddition of an araldehyde, an amino acid ester, and a chalcone catalyzed by I2/K2CO3 in tetrahydrofuran at 80 °C. The advantages of this method are readily available starting materials, mild conditions, and simple operation, and it is metal free and yields are good to excellent.
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Affiliation(s)
- Yongjian Zhang
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, P.R. China
| | - Junyi Su
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, P.R. China
| | - Tengfei Lin
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, P.R. China
| | - Zhangqi Lin
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, P.R. China
| | - Zichun Zhou
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, P.R. China
| | - Yujin Li
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, P.R. China
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16
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Roslan II, Ng KH, Jaenicke S, Chuah GK. Photocatalytic regeneration of brominating agent in the visible light-mediated synthesis of imidazo[1,2-a]pyridines. Catal Sci Technol 2019. [DOI: 10.1039/c9cy00141g] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Regenerating the brominating agent by erythrosine B closes a catalytic cycle for the construction of the imidazo[1,2-a]pyridine framework.
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Affiliation(s)
| | - Kian-Hong Ng
- Department of Chemistry
- National University of Singapore
- Singapore 117543
| | - Stephan Jaenicke
- Department of Chemistry
- National University of Singapore
- Singapore 117543
| | - Gaik-Khuan Chuah
- Department of Chemistry
- National University of Singapore
- Singapore 117543
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17
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Nguyen OTK, Ha PT, Dang H, Vo YH, Nguyen TT, Le NTH, Phan NTS. Superparamagnetic nanoparticle-catalyzed coupling of 2-amino pyridines/pyrimidines with trans-chalcones. RSC Adv 2019; 9:5501-5511. [PMID: 35515937 PMCID: PMC9060791 DOI: 10.1039/c9ra00097f] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2019] [Accepted: 02/04/2019] [Indexed: 11/21/2022] Open
Abstract
An aerobic coupling of 2-aminopyrimidines or 2-aminopyridines with trans-chalcones to afford aroylimidazo[1,2-a]pyrimidines and aroylimidazo[1,2-a]pyridines is reported. Reactions proceed in the presence of CuFe2O4 superparamagnetic nanoparticle catalyst, two equivalents of iodine, oxygen oxidant, and 1,4-dioxane solvent. The catalyst is superior to many common copper or iron complexes. Copper ferrite could be easily separated by magnetic decantation and reused up to 5 times without a major loss of activity. The method described here marks a rare example of using a simple, heterogeneous catalyst for synthesis of fused heterocycles. To our best knowledge, aroylimidazo[1,2-a]pyrimidines and aroylimidazo[1,2-a]pyridines were not previously synthesized using this protocol. An aerobic coupling of 2-aminopyrimidines or 2-aminopyridines with trans-chalcones to afford aroylimidazo[1,2-a]pyrimidines and aroylimidazo[1,2-a]pyridines is reported.![]()
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Affiliation(s)
- Oanh T. K. Nguyen
- Faculty of Chemical Engineering
- HCMC University of Technology
- VNU-HCM
- Ho Chi Minh City
- Vietnam
| | - Pha T. Ha
- Faculty of Chemical Engineering
- HCMC University of Technology
- VNU-HCM
- Ho Chi Minh City
- Vietnam
| | - Ha V. Dang
- Faculty of Chemical Engineering
- HCMC University of Technology
- VNU-HCM
- Ho Chi Minh City
- Vietnam
| | - Yen H. Vo
- Faculty of Chemical Engineering
- HCMC University of Technology
- VNU-HCM
- Ho Chi Minh City
- Vietnam
| | - Tung T. Nguyen
- Faculty of Chemical Engineering
- HCMC University of Technology
- VNU-HCM
- Ho Chi Minh City
- Vietnam
| | - Nhan T. H. Le
- Faculty of Chemical Engineering
- HCMC University of Technology
- VNU-HCM
- Ho Chi Minh City
- Vietnam
| | - Nam T. S. Phan
- Faculty of Chemical Engineering
- HCMC University of Technology
- VNU-HCM
- Ho Chi Minh City
- Vietnam
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18
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Li X, Wang T, Lu YJ, Ji S, Huo Y, Liu B. Copper-catalyzed oxidative multicomponent reaction: synthesis of imidazo fused heterocycles with molecular oxygen. Org Biomol Chem 2018; 16:7143-7151. [PMID: 30091779 DOI: 10.1039/c8ob01532e] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An oxidative cascade that involves multicomponent reaction comprising a terminal alkyne, 2-amino N-heterocycle, benzyl or allylic bromide with molecular oxygen, delivering densely functionalized imidazo fused heterocycles, is described. This reaction features a cheap catalyst, a green oxidant, and readily available starting materials, which make the overall synthesis applicable in the quick access to relevant pharmaceutical molecules with imidazole derived heterocycles.
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Affiliation(s)
- Xianwei Li
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, No. 100 Waihuan Xi Road Guangzhou Higher Education Mega Center, Guangzhou, 510006, China.
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19
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Kour D, Gupta A, Kapoor KK, Gupta VK, Rajnikant R, Singh D, Das P. Iodine–NH4OAc mediated regioselective synthesis of 2-aroyl-3-arylimidazo[1,2-a]pyridines from 1,3-diaryl-prop-2-en-1-ones. Org Biomol Chem 2018; 16:1330-1336. [DOI: 10.1039/c7ob02750h] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient, metal-free regioselective synthesis of 2-aroyl-3-arylimidazo[1,2-a]pyridines from 1,3-diaryl-prop-2-en-1-ones has been developed by their reaction with 2-aminopyridine in the presence of I2/NH4OAc.
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Affiliation(s)
- Dilpreet Kour
- Department of Chemistry
- University of Jammu
- Jammu-180006
- India
| | - Annah Gupta
- Department of Chemistry
- University of Jammu
- Jammu-180006
- India
| | | | - Vivek K. Gupta
- X-ray Crystallographic Group
- Department of Physics
- University of Jammu
- Jammu-180006
- India
| | - Rajnikant Rajnikant
- X-ray Crystallographic Group
- Department of Physics
- University of Jammu
- Jammu-180006
- India
| | - Deepika Singh
- Medicinal Chemistry Division
- CSIR-Indian Institute of Integrative Medicine
- Jammu-180001
- India
| | - Parthasarathi Das
- Medicinal Chemistry Division
- CSIR-Indian Institute of Integrative Medicine
- Jammu-180001
- India
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20
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Ramya PS, Angapelly S, Digwal CS, Yadav U, Babu BN, Kamal A. An efficient RuCl 3 ·H 2 O/I 2 catalytic system: A facile access to 3-aroylimidazo[1,2- a ]pyridines from 2-aminopyridines and chalcones. JOURNAL OF SAUDI CHEMICAL SOCIETY 2018. [DOI: 10.1016/j.jscs.2017.07.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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21
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Hariss L, Hadir KB, El-Masri M, Roisnel T, Grée R, Hachem A. Preparation of imidazo[1,2- a]- N-heterocyclic derivatives with gem-difluorinated side chains. Beilstein J Org Chem 2017; 13:2115-2121. [PMID: 29062431 PMCID: PMC5647726 DOI: 10.3762/bjoc.13.208] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2017] [Accepted: 09/27/2017] [Indexed: 11/23/2022] Open
Abstract
Using an aerobic oxidative coupling, different new imidazo[1,2-a]-N-heterocycles with gem-difluroroalkyl side chains have been prepared in fair yields by the reaction of gem-difluoroenones with aminopyridines, -pyrimidines and -pyridazines. Condensed heterocycles of this type play an important role as key core structures of various bioactive compounds. Further, starting with a chloroimidazopyridazine derivative, Pd-catalyzed coupling reactions as well as nucleophilic substitutions have been performed successfully in order to increase the molecular diversity.
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Affiliation(s)
- Layal Hariss
- Laboratory for Medicinal Chemistry and Natural Products, Lebanese University, Faculty of Sciences (1) and PRASE-EDST, Hadath, Beirut, Lebanon
| | - Kamal Bou Hadir
- American University of Beirut, Department of Chemistry, Beirut 11-0236, Lebanon
| | - Mirvat El-Masri
- Laboratory for Medicinal Chemistry and Natural Products, Lebanese University, Faculty of Sciences (1) and PRASE-EDST, Hadath, Beirut, Lebanon
| | - Thierry Roisnel
- Université de Rennes 1, Institut des Sciences Chimiques de Rennes, CNRS UMR 6226, Avenue du Général Leclerc, 35042 Rennes Cedex, France
| | - René Grée
- Université de Rennes 1, Institut des Sciences Chimiques de Rennes, CNRS UMR 6226, Avenue du Général Leclerc, 35042 Rennes Cedex, France
| | - Ali Hachem
- Laboratory for Medicinal Chemistry and Natural Products, Lebanese University, Faculty of Sciences (1) and PRASE-EDST, Hadath, Beirut, Lebanon
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