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Ghosh S, Das D, Mandal RD, Das AR. Harnessing the benzyne insertion consequence to enable π-extended pyrido-acridine and quinazolino-phenanthridine. Org Biomol Chem 2024; 22:5591-5602. [PMID: 38898782 DOI: 10.1039/d4ob00533c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/21/2024]
Abstract
Distinct protocols have been devised for the preparation of hybrid heterocyclic scaffolds like π-extended pyrido-acridines and quinazolino-phenanthridines duly materialized through Rh(III)- and Pd(II)-mediated catalytic courses commencing from acridine and quinazolimine scaffolds. Interestingly, the parent compounds (acridines and quinazolimines) are actualized from 2-aminobenzonitrile and anthranilic acid, where 2-aminobenzonitrile acts as the 1,4-dipolarophilic species and anthranilic acid as the benzyne precursor. The molecular assembly of acridine suggests the participation of two benzyne units. In addition, the structural motif of the quinazolimine ring features one benzyne unit. Further, indolizine ring containing the enaminonitrile skeleton upon exposure to benzyne forms an indolizine fused quinoline ring, decorated with three benzyne units.
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Affiliation(s)
- Swarnali Ghosh
- Department of Chemistry, University of Calcutta, 92, A. P. C. Road, Kolkata-700009, India.
| | - Dwaipayan Das
- Department of Chemistry, University of Calcutta, 92, A. P. C. Road, Kolkata-700009, India.
| | - Rahul Dev Mandal
- Department of Chemistry, University of Calcutta, 92, A. P. C. Road, Kolkata-700009, India.
| | - Asish R Das
- Department of Chemistry, University of Calcutta, 92, A. P. C. Road, Kolkata-700009, India.
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2
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Dhara S, Ghosh S, Das AR. An iron-catalyzed domino reaction of donor-acceptor cyclopropanes: a diastereoselective approach towards diversely functionalized pyrrolo-quinazolines. Org Biomol Chem 2022; 20:1415-1424. [PMID: 35014658 DOI: 10.1039/d1ob02215f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
An expeditious synthetic route to access functionalized pyrrolo[2,1-b]quinazoline scaffolds has been achieved via domino ring opening cyclization (DROC) reactions of donor-acceptor (D-A) cyclopropanes and 2-amino(methyl)aniline derivatives. This novel iron catalyzed transformation is amenable to a wide range of substrates. Three new C-N bonds and two rings were sequentially constructed in this divergent one-pot process. The advantages of simple operation, high yields and general applicability make this procedure highly attractive and practical too.
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Affiliation(s)
- Samiran Dhara
- Department of Chemistry, University of Calcutta 92, A. P. C. Road, Kolkata-700009, India.
| | - Subhadeep Ghosh
- Department of Chemistry, University of Calcutta 92, A. P. C. Road, Kolkata-700009, India.
| | - Asish R Das
- Department of Chemistry, University of Calcutta 92, A. P. C. Road, Kolkata-700009, India.
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3
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Alla M, Indukuri DR, Potuganti GR, Nanubolu JB. Synthesis of Dihydropyrrole Derivatives by Oxidative Functionalization of 2-Amino-4H-Chromenes Using Hypervalent Iodine Reagents. Synlett 2021. [DOI: 10.1055/a-1500-6863] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
AbstractAn efficient simple, metal-free, one-pot protocol for the synthesis of dihydropyrrole derivatives has been achieved via sequential addition of iodobenzenediacetate and secondary amine to 2-amino-4H- pyran derivatives. The one-pot protocol proceeds through tandem oxidative functionalization, rearrangement, and ring contraction to provide an entirely new strategy for the construction of the dihydropyrrole skeleton.
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Affiliation(s)
- Manjula Alla
- Division of Fluoro and Agro Chemicals, CSIR-Indian Institute of Chemical Technology
- Academy of Scientific and Innovative Research (AcSIR)
| | - Divakar Reddy Indukuri
- Division of Fluoro and Agro Chemicals, CSIR-Indian Institute of Chemical Technology
- Academy of Scientific and Innovative Research (AcSIR)
| | - Gal Reddy Potuganti
- Division of Fluoro and Agro Chemicals, CSIR-Indian Institute of Chemical Technology
- Academy of Scientific and Innovative Research (AcSIR)
| | - Jagadeesh Babu Nanubolu
- Centre for X-ray Crystallography, CSIR-Indian Institute of Chemical Technology
- Academy of Scientific and Innovative Research (AcSIR)
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4
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Shaker M, Elhamifar D. Magnetic Ti-containing phenylene-based mesoporous organosilica: A powerful nanocatalyst with high recoverability. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2020.125603] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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5
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Kamanna K, Khatavi SY. Microwave-accelerated Carbon-carbon and Carbon-heteroatom Bond Formation via Multi-component Reactions: A Brief Overview. CURRENT MICROWAVE CHEMISTRY 2020. [DOI: 10.2174/2213346107666200218124147] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Multi-Component Reactions (MCRs) have emerged as an excellent tool in organic chemistry
for the synthesis of various bioactive molecules. Among these, one-pot MCRs are included, in
which organic reactants react with domino in a single-step process. This has become an alternative
platform for the organic chemists, because of their simple operation, less purification methods, no side
product and faster reaction time. One of the important applications of the MCRs can be drawn in carbon-
carbon (C-C) and carbon-heteroatom (C-X; X = N, O, S) bond formation, which is extensively
used by the organic chemists to generate bioactive or useful material synthesis. Some of the key carbon-
carbon bond forming reactions are Grignard, Wittig, Enolate alkylation, Aldol, Claisen condensation,
Michael and more organic reactions. Alternatively, carbon-heteroatoms containing C-N, C-O,
and C-S bond are also found more important and present in various heterocyclic compounds, which
are of biological, pharmaceutical, and material interest. Thus, there is a clear scope for the discovery
and development of cleaner reaction, faster reaction rate, atom economy and efficient one-pot synthesis
for sustainable production of diverse and structurally complex organic molecules. Reactions that
required hours to run completely in a conventional method can now be carried out within minutes.
Thus, the application of microwave (MW) radiation in organic synthesis has become more promising
considerable amount in resource-friendly and eco-friendly processes. The technique of microwaveassisted
organic synthesis (MAOS) has successfully been employed in various material syntheses,
such as transition metal-catalyzed cross-coupling, dipolar cycloaddition reaction, biomolecule synthesis,
polymer formation, and the nanoparticle synthesis. The application of the microwave-technique in
carbon-carbon and carbon-heteroatom bond formations via MCRs with major reported literature examples
are discussed in this review.
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Affiliation(s)
- Kantharaju Kamanna
- Department of Chemistry, Peptide, and Medicinal Chemistry Research Laboratory, Rani Channamma University, P-B, NH-4, Belagavi-591156, Karnataka, India
| | - Santosh Y. Khatavi
- Department of Chemistry, Peptide, and Medicinal Chemistry Research Laboratory, Rani Channamma University, P-B, NH-4, Belagavi-591156, Karnataka, India
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Anvari Gharabaghlou M, Shadjou N, Poursattar Marjani A. Cu@KCC‐1‐NH‐CS
2
as a new and highly efficient nanocatalyst for the synthesis of 2‐amino‐4
H
‐chromene derivatives. Appl Organomet Chem 2020. [DOI: 10.1002/aoc.5868] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
| | - Nasrin Shadjou
- Department of Nanotechnology, Faculty of Science Urmia University Urmia Iran
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Das D, Mukherjee P, Das AR. "On water" palladium catalyzed diastereoselective boronic acid addition to structurally diverse cyclopropane nitriles. Org Biomol Chem 2020; 18:8886-8898. [PMID: 33108794 DOI: 10.1039/d0ob00077a] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient palladium catalyzed diastereoselective addition of arylboronic acids to complex spirocyclopropyl dinitriles is developed in the presence of a catalytic amount of 4-dodecylbenzenesulphonic acid (DBSA) as a Brønsted acid surfactant in aqueous media. The protocol is also found to be highly effective when different types of nitrile compounds and organo-boron compounds are used. The overall reaction has been found to be very cost efficient since it requires low catalyst loading, mild thermal energy and short reaction time. Wide substrate scope, operational simplicity, good to excellent product yield, and use of green solvents make the reaction a practical route to transform nitrile into a keto functionality in biorelevant heterocyclic scaffolds. The scale-up synthesis of the target scaffolds can also be achieved with ease which also signifies the practicability of this protocol.
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Affiliation(s)
- Dwaipayan Das
- Department of Chemistry, University of Calcutta 92, A. P. C. Road, Kolkata-700009, India.
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Saha M, Mukherjee P, Das AR. Practical application of PhI(OAc)2/I2 combination to synthesize benzimidazoles from 2-aminobenzylamine through ring distortion strategy. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.01.099] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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9
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Mukherjee P, Das AR. Spirocyclopropanes from Intramolecular Cyclopropanation of Pyranopyrazoles and Pyranopyrimidine-diones and Lewis Acid Mediated (3 + 2) Cycloadditions of Spirocyclopropylpyrazolones. J Org Chem 2017; 82:2794-2802. [DOI: 10.1021/acs.joc.7b00089] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Prasun Mukherjee
- Department of Chemistry, University of Calcutta, Kolkata-700009, India
| | - Asish R. Das
- Department of Chemistry, University of Calcutta, Kolkata-700009, India
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