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Jiang S. Copper (II) complex supported on magnetic nanoparticles as a novel nanocatalyst for the synthesis of imidazo[1,2-a]pyridines. Mol Divers 2024:10.1007/s11030-023-10781-w. [PMID: 38267750 DOI: 10.1007/s11030-023-10781-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: 10/07/2023] [Accepted: 11/21/2023] [Indexed: 01/26/2024]
Abstract
Research on the synthesis of imidazo[1,2-a]pyridines has gained great importance among synthetic chemists because there have been numerous reports of their biological and medicinal activities. In this respect, we fabricated CuCl2 immobilized on Fe3O4 nanoparticles modified with 1,10-phenanthroline-5,6-diol [Fe3O4@Diol/Phen-CuCl2] and investigated its catalytic activity for the preparation of imidazo[1,2-a]pyridine derivatives through one-pot three-component reaction of 2-aminopyridines, aldehydes and terminal alkynes under ecofriendly conditions. FT-IR spectroscopy, EDX, SEM, TEM, XRD, TGA, VSM and ICP-OES techniques employed in order to identify the structure of the as-constructed Fe3O4@Diol/Phen-CuCl2 nanocatalyst. This catalytic system has a series of advantages such as the synthesis of imidazo[1,2-a]pyridine products with high yields in suitable time, performing the reactions in an environmentally friendly solvent (PEG), easy preparation of the catalyst with a simple method, and the recyclability of the Fe3O4@Diol/Phen-CuCl2 nanocatalyst.
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Affiliation(s)
- Shanshan Jiang
- Department of Chemistry and Chemical Engineering, Lvliang University, Lvliang, 033000, Shanxi, People's Republic of China.
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2
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Kumar Mishra S, Parikh A, Rangan K, Sah AK. Synthesis of Catalyst Using Bio‐benign Precursors and Its Application in One‐Pot Catalytic Synthesis of Imidazo[1,2‐
a
]pyridines. ChemistrySelect 2023. [DOI: 10.1002/slct.202300129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/11/2023]
Affiliation(s)
- Santosh Kumar Mishra
- Department of Chemistry Birla Institute of Technology and Science, Pilani Pilani Campus Rajasthan 333031 India
| | - Anuvasita Parikh
- Department of Chemistry Birla Institute of Technology and Science, Pilani Pilani Campus Rajasthan 333031 India
| | - Krishnan Rangan
- Department of Chemistry Birla Institute of Technology and Science, Pilani Hyderabad Campus Telangana 500078 India
| | - Ajay K. Sah
- Department of Chemistry Birla Institute of Technology and Science, Pilani Pilani Campus Rajasthan 333031 India
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Bidusenko IA, Schmidt EY, Ushakov IA, Vashchenko AV, Protsuk NI, Orel VB, Vitkovskaya NM, Trofimov BA. Semistabilized Diazatrienyl Anions from Pyridine Imines and Acetylenes: An Access to ( Z)-Stilbene/Imidazopyridine Ensembles, Benzyl Imidazopyridines, and Beyond. J Org Chem 2022; 87:12225-12239. [PMID: 36044622 DOI: 10.1021/acs.joc.2c01372] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Semistabilized diazatrienyl anions are generated by the reaction of 2-pyridylarylimines with arylacetylenes in superbase systems MOtBu (M = Li, Na, K)/DMSO at ambient temperature for 15 min. The initial intermediate N-centered propargyl-1,3-diaza-1,3,5-trienyl anions undergo intermolecular cyclization to benzyl imidazopyridine anions (formally [3 + 2] cycloaddition), further intercepting a second molecule of the starting pyridylimines or a proton of medium to afford (Z)-stilbene/imidazopyridine ensembles and benzyl imidazopyridines. The charge distribution in all intermediate anions and their synthetic evolution are consistent with quantum-chemical analysis (B2PLYPD/6-311+G**//B3LYP/6-31+G*).
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Affiliation(s)
- Ivan A Bidusenko
- E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch, Russian Academy of Sciences, 1 Favorsky Str., 664033 Irkutsk, Russia
| | - Elena Yu Schmidt
- E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch, Russian Academy of Sciences, 1 Favorsky Str., 664033 Irkutsk, Russia
| | - Igor A Ushakov
- E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch, Russian Academy of Sciences, 1 Favorsky Str., 664033 Irkutsk, Russia
| | - Alexander V Vashchenko
- E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch, Russian Academy of Sciences, 1 Favorsky Str., 664033 Irkutsk, Russia
| | - Nadezhda I Protsuk
- E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch, Russian Academy of Sciences, 1 Favorsky Str., 664033 Irkutsk, Russia
| | - Vladimir B Orel
- E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch, Russian Academy of Sciences, 1 Favorsky Str., 664033 Irkutsk, Russia.,Laboratory of Quantum-Chemical Modeling of Molecular Systems, Irkutsk State University, 1 K. Marx Street, 664003 Irkutsk, Russia
| | - Nadezhda M Vitkovskaya
- Laboratory of Quantum-Chemical Modeling of Molecular Systems, Irkutsk State University, 1 K. Marx Street, 664003 Irkutsk, Russia
| | - Boris A Trofimov
- E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch, Russian Academy of Sciences, 1 Favorsky Str., 664033 Irkutsk, Russia
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Shivam, Tiwari G, Kumar M, Chauhan ANS, Erande RD. Recent advances in cascade reactions and their mechanistic insights: a concise strategy to synthesize complex natural products and organic scaffolds. Org Biomol Chem 2022; 20:3653-3674. [PMID: 35416224 DOI: 10.1039/d2ob00452f] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The beauty of cascade reactions to bestow us with cumbersome organic scaffolds has made them a cutting-edge area of research. Although the planning of cascades may require intuition, their results can be highly impactful. The development of cascades to provide specific targeted molecules of an appropriate structural and stereochemical framework poses a significant challenge but can serve as one of the most impressive tools in organic synthesis. This review shares a broad interest in compiling cascade transformations towards the construction of polycyclic frameworks, induction of chirality/asymmetry in the protocol, etc. to solve diverse challenges in organic synthesis pursuits, as cascades enable the rapid and efficient construction of complex architectures from simple molecules. The studies highlighted herein manifest the utilization of a range of cascade reactions under various classifications for generating natural product skeletons such as palau'amine, benzosimuline, arcutinine, and others from simple building blocks, with emphasis on breakthroughs and potential for asymmetric synthesis. The exquisite synthetic designs of recently completed total synthesis of natural products with a focus on strategic concerns are also highlighted in this review.
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Affiliation(s)
- Shivam
- Department of Chemistry, Indian Institute of Technology Jodhpur, Jodhpur-342037, India.
| | - Geetika Tiwari
- Department of Chemistry, Indian Institute of Technology Jodhpur, Jodhpur-342037, India.
| | - Manish Kumar
- Department of Chemistry, Indian Institute of Technology Jodhpur, Jodhpur-342037, India.
| | | | - Rohan D Erande
- Department of Chemistry, Indian Institute of Technology Jodhpur, Jodhpur-342037, India.
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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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Kujur S, Verma S, Kumar A, Sharma R, Pathak DD. A green polyol approach for the synthesis of Cu 2O NPs adhered on graphene oxide: a robust and efficient catalyst for 1,2,4-triazole and imidazo[1,2- a]pyridine synthesis. NEW J CHEM 2022. [DOI: 10.1039/d2nj00831a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Cu2O NPs immobilized on graphene oxide are used as a heterogeneous catalyst for the synthesis of a series of 1,2,4-triazoles and imidazo[1,2-a]pyridines under solvent-free conditions.
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Affiliation(s)
- Shelly Kujur
- Department of Chemistry and Chemical Biology, Indian Institute of Technology (ISM), Dhanbad, 826004, India
| | - Shruti Verma
- Department of Chemistry and Chemical Biology, Indian Institute of Technology (ISM), Dhanbad, 826004, India
| | - Akash Kumar
- Department of Chemistry and Chemical Biology, Indian Institute of Technology (ISM), Dhanbad, 826004, India
| | - Richa Sharma
- Department of Chemistry, Faculty of Science, Dayalbagh Educational Institute, Dayalbagh, Agra, 282005, India
| | - Devendra Deo Pathak
- Department of Chemistry and Chemical Biology, Indian Institute of Technology (ISM), Dhanbad, 826004, India
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Recent Advances on the Preparation and Catalytic Applications of Metal Complexes Supported-Mesoporous Silica MCM-41 (Review). J Inorg Organomet Polym Mater 2020. [DOI: 10.1007/s10904-020-01689-1] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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