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Polo-Cuadrado E, Ferrer K, Sánchez-Márquez J, Charris-Molina A, Rodríguez-Núñez YA, Espinoza-Catalán L, Gutiérrez M. Unexpected discovery: "A new 3,3'-bipyrazolo[3,4- b]pyridine scaffold and its comprehensive analysis". Heliyon 2024; 10:e32573. [PMID: 38961942 PMCID: PMC11219494 DOI: 10.1016/j.heliyon.2024.e32573] [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: 12/08/2023] [Revised: 05/13/2024] [Accepted: 06/05/2024] [Indexed: 07/05/2024] Open
Abstract
In this study, a novel 3,3'-bipyrazolo [3,4-b]pyridine-type structure was synthesized from 5-acetylamino-3-methyl-1-phenylpyrazole using the Vilsmeier-Haack reaction as a key step. The spectroscopic properties and structural elucidation of the compound were determined with the use of FT-IR, HRMS, 1H NMR, and 13C NMR. Likewise, the theoretical analysis of the IR and NMR spectra allowed peaks to be assigned and a solid correlation was demonstrated between the experimental and theoretical results. Finally, ab initio calculations based on the density functional theory method at the B3LYP/6-311G (d,p) level of theory were used to determine the conformational energy barrier, facilitating the identification of the most probable conformers of the synthesized compound. Overall, our findings contribute to the understanding of bipyrazolo [3,4-b]pyridine derivatives.
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Affiliation(s)
- Efraín Polo-Cuadrado
- Departamento de Química Orgánica, Facultad de Ciencias Químicas, Universidad de Concepción, Concepción, Chile
| | - Karoll Ferrer
- Laboratory of Growth Regulators, Institute of Experimental Botany, The Czech Academy of Sciences, Palacký University, Šlechtitelů 27, 78371 Olomouc, Czech Republic
| | - Jesús Sánchez-Márquez
- Departamento de Química-Física, Universidad de Cádiz, Facultad de Ciencias, 4011510 Puerto Real, Cádiz, Spain
| | - Andrés Charris-Molina
- CIBION-CONICET, Centro de Investigaciones en Bionanociencias, NMR Group, Polo Científico Tecnológico, Ciudad Autónoma de Buenos Aires, Buenos Aires C1425FQD, Argentina
| | - Yeray A. Rodríguez-Núñez
- Laboratorio de Síntesis Orgánica y Organometálica, Centro de Química Teórica y Computacional (CQTC), Universidad Andrés Bello, Facultad de Ciencias Exactas, Santiago 8370146, Chile
| | - Luis Espinoza-Catalán
- Departamento de Química, Universidad Técnica Federico Santa María, Av. España No. 1680, Valparaíso 2340000, Chile
| | - Margarita Gutiérrez
- Laboratorio Síntesis Orgánica y Actividad Biológica (LSO-Act-Bio), Instituto de Química de Recursos Naturales, Universidad de Talca, Casilla 747, Talca 3460000, Chile
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2
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Parvin T. Multicomponent Reactions Using C,N-Binucleophilic Nature of Aminopyrazoles: Construction of Pyrazole-Fused Heterocycles. Top Curr Chem (Cham) 2023; 381:19. [PMID: 37237061 DOI: 10.1007/s41061-023-00427-8] [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: 03/08/2023] [Accepted: 04/22/2023] [Indexed: 05/28/2023]
Abstract
Synthesis of pyrazole-fused heterocycles has gained considerable attention in recent years due to their wide applications in medicinal chemistry. Aminopyrazoles are versatile building blocks for the synthesis of pyrazole-fused heterocycles by multicomponent reactions. Due to the presence of multiple reaction sites, they have fascinating chemical reactivity. Thus, they have been extensively used in multicomponent reactions for the construction of pyrazole-fused heterocycles. Although few review articles on the preparation and applications of aminopyrazoles are known in the literature, to date there is no dedicated review article on the construction of pyrazole-fused heterocycles exploring the reactivity of amino pyrazoles as C,N-binucleophiles in multicomponent reactions. Considering this, herein the multicomponent reactions for the construction of pyrazole-fused heterocycles exploring C,N-binucleophilic nature of amino pyrazoles have been reported.
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Affiliation(s)
- Tasneem Parvin
- Department of Chemistry, National Institute of Technology Patna, Ashok Rajpath, Patna, 800005, India.
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3
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Synthesis of Diversified Pyrazolo[3,4-b]pyridine Frameworks from 5-Aminopyrazoles and Alkynyl Aldehydes via Switchable C≡C Bond Activation Approaches. Molecules 2022; 27:molecules27196381. [PMID: 36234926 PMCID: PMC9571537 DOI: 10.3390/molecules27196381] [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: 09/03/2022] [Revised: 09/24/2022] [Accepted: 09/25/2022] [Indexed: 11/17/2022] Open
Abstract
A cascade 6-endo-dig cyclization reaction was developed for the switchable synthesis of halogen and non-halogen-functionalized pyrazolo[3,4-b]pyridines from 5-aminopyrazoles and alkynyl aldehydes via C≡C bond activation with silver, iodine, or NBS. In addition to its wide substrate scope, the reaction showed good functional group tolerance as well as excellent regional selectivity. This new protocol manipulated three natural products, and the arylation, alkynylation, alkenylation, and selenization of iodine-functionalized products. These reactions demonstrated the potential applications of this new method.
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Rizbayeva T, Smolobochkin A, Gazizov AS, Voronina J, Syakaev VV, Strelnik AG, Litvinov I, Burilov AR, Pudovik M. One-Pot Synthesis of Novel Functionalized Fused Pyridine Derivatives via Consecutive Pyrrolidine Ring-Closure/Ring-Opening/Formal Aza-Diels-Alder Reactions. J Org Chem 2022; 87:11350-11361. [PMID: 35952659 DOI: 10.1021/acs.joc.2c00827] [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
In this article, we report a highly regioselective method for the synthesis of new fused pyridine derivatives─2,3-disubstituted quinolines and 1,2-dihydro-3H-pyrazolo[3,4-b]pyridin-3-one derivatives. The method is based on the reaction of 1,1-diethoxybutane derivatives with aromatic and heterocyclic nucleophiles. The isolated compounds are similar to the products formed as a result of the Debner-Miller reaction. However, we have shown that the interaction of 1,1-diethoxybutane derivatives with (hetero)aromatic amines proceeds according to a mechanism different from that of the Doebner-Miller reaction. The proposed method is distinguished by the possibility of obtaining a wide range of substituted quinolines and 1,2-dihydro-3H-pyrazolo[3,4-b]pyridin-3-one derivatives in one step, the absence of the need to use expensive metal-containing catalysts, and a high product yield.
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Affiliation(s)
- Tanzilya Rizbayeva
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center, Russian Academy of Science, Arbuzova str., 8, Kazan 420088, Russian Federation
| | - Andrey Smolobochkin
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center, Russian Academy of Science, Arbuzova str., 8, Kazan 420088, Russian Federation
| | - Almir S Gazizov
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center, Russian Academy of Science, Arbuzova str., 8, Kazan 420088, Russian Federation
| | - Julia Voronina
- N.S. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninsky prosp. 31, Moscow 119991, Russian Federation
| | - Viktor V Syakaev
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center, Russian Academy of Science, Arbuzova str., 8, Kazan 420088, Russian Federation
| | - Anna G Strelnik
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center, Russian Academy of Science, Arbuzova str., 8, Kazan 420088, Russian Federation
| | - Igor Litvinov
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center, Russian Academy of Science, Arbuzova str., 8, Kazan 420088, Russian Federation
| | - Alexander R Burilov
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center, Russian Academy of Science, Arbuzova str., 8, Kazan 420088, Russian Federation
| | - Michail Pudovik
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center, Russian Academy of Science, Arbuzova str., 8, Kazan 420088, Russian Federation
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5
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Horbaczewskyj CS, Fairlamb IJS. Pd-Catalyzed Cross-Couplings: On the Importance of the Catalyst Quantity Descriptors, mol % and ppm. Org Process Res Dev 2022; 26:2240-2269. [PMID: 36032362 PMCID: PMC9396667 DOI: 10.1021/acs.oprd.2c00051] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Indexed: 12/26/2022]
Abstract
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This Review examines parts per million (ppm) palladium
concentrations
in catalytic cross-coupling reactions and their relationship with
mole percentage (mol %). Most studies in catalytic cross-coupling
chemistry have historically focused on the concentration ratio between
(pre)catalyst and the limiting reagent (substrate), expressed as mol
%. Several recent papers have outlined the use of “ppm level”
palladium as an alternative means of describing catalytic cross-coupling
reaction systems. This led us to delve deeper into the literature
to assess whether “ppm level” palladium is a practically
useful descriptor of catalyst quantities in palladium-catalyzed cross-coupling
reactions. Indeed, we conjectured that many reactions could, unknowingly,
have employed low “ppm levels” of palladium (pre)catalyst,
and generally, what would the spread of ppm palladium look like across
a selection of studies reported across the vast array of the cross-coupling
chemistry literature. In a few selected examples, we have examined
other metal catalyst systems for comparison with palladium.
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Affiliation(s)
| | - Ian J. S. Fairlamb
- University of York, Heslington, York, North Yorkshire, YO10 5DD, United Kingdom
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Qian P, Jiang S, Fan H, Jiang S, Xu L, Liu J. Electrochemically Enabled Cascade Cyclization Reaction of Aromatic Aldehydes and Pyrazol-5-amines: Synthesis of Bis-pyrazolo[3,4- b:4',3'- e]pyridines. J Org Chem 2022; 87:9242-9249. [PMID: 35795996 DOI: 10.1021/acs.joc.2c00988] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A facile method for the synthesis of bis-pyrazolo[3,4-b:4',3'-e]pyridines from easily available aromatic aldehydes and pyrazol-5-amines was developed via electrochemistry. The reaction proceeded smoothly under metal and external chemical oxidant-free conditions, giving a variety of bis-pyrazolo[3,4-b:4',3'-e]pyridines in moderate yields.
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Affiliation(s)
- Peng Qian
- School of Chemistry and Material Engineering, Engineering Research Center of Biomass Conversion and Pollution Prevention of Anhui Educational Institutions, Fuyang Normal University, Fuyang, Anhui 236037, P.R. China
| | - Shan Jiang
- Experimental and Training Management Center, Fuyang Normal University, Fuyang, Anhui 236037, P.R. China
| | - Hua Fan
- School of Chemistry and Material Engineering, Engineering Research Center of Biomass Conversion and Pollution Prevention of Anhui Educational Institutions, Fuyang Normal University, Fuyang, Anhui 236037, P.R. China
| | - Siqi Jiang
- School of Chemistry and Material Engineering, Engineering Research Center of Biomass Conversion and Pollution Prevention of Anhui Educational Institutions, Fuyang Normal University, Fuyang, Anhui 236037, P.R. China
| | - Longlong Xu
- School of Chemistry and Material Engineering, Engineering Research Center of Biomass Conversion and Pollution Prevention of Anhui Educational Institutions, Fuyang Normal University, Fuyang, Anhui 236037, P.R. China
| | - Jiaojiao Liu
- School of Chemistry and Material Engineering, Engineering Research Center of Biomass Conversion and Pollution Prevention of Anhui Educational Institutions, Fuyang Normal University, Fuyang, Anhui 236037, P.R. China
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7
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Smolobochkin AV, Gazizov AS, Garifzyanov AR, Burilov AR, Pudovik MA. Methods for the synthesis of 1H-pyrazolo[3,4-b]pyridine derivatives. Russ Chem Bull 2022. [DOI: 10.1007/s11172-022-3487-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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8
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Peng Q, Xu L, Wang W, Zhang L, Tang L, Liu J, Sheng L. Electrochemical synthesis of dipyrazolo/dipyrimidine-fused pyridines via oxidative domino cyclization of C(sp3)–H bonds. Org Chem Front 2022. [DOI: 10.1039/d1qo01641e] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An electrochemically oxidative domino cyclization reaction of methyl azaarenes/ketones with pyrazol-5-amines and 6-amino-pyrimidine-2,4-diones was developed, providing a variety of dipyrazolo[3,4-b:4',3'-e]pyridines and dipyrimidine-fused pyridines with moderate to good yields. The reaction...
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9
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Coppola C, D'Ettorre A, Parisi ML, Zani L, Reginato G, Calamante M, Mordini A, Taddei M, Basosi R, Sinicropi A. In silico investigation of catechol-based sensitizers for type II dye sensitized solar cells (DSSCs). Inorganica Chim Acta 2021. [DOI: 10.1016/j.ica.2020.120233] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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10
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Tigreros A, Portilla J. Recent progress in chemosensors based on pyrazole derivatives. RSC Adv 2020; 10:19693-19712. [PMID: 35515469 PMCID: PMC9054117 DOI: 10.1039/d0ra02394a] [Citation(s) in RCA: 64] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2020] [Accepted: 05/19/2020] [Indexed: 12/16/2022] Open
Abstract
Colorimetric and fluorescent probes based on small organic molecules have become important tools in modern biology because they provide dynamic information concerning the localization and quantity of the molecules and ions of interest without the need for genetic engineering of the sample. In the past five years, these probes for ions and molecules have attracted great attention because of their biological, environmental and industrial significance combined with the simplicity and high sensitivity of absorption and fluorescence techniques. Moreover, pyrazole derivatives display a number of remarkable photophysical properties and wide synthetic versatility superior to those of other broadly used scaffolds. This review provides an overview of the recent (2016-2020) findings on chemosensors containing pyrazole derivatives (pyrazoles, pyrazolines and fused pyrazoles). The discussion focuses on the design and physicochemical properties of chemosensors in order to realize their full potential for practical applications in environmental and biological monitoring (sensing of metal ions, anions, explosives, and biomolecules). We also present our conclusions and outlook for the future.
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Affiliation(s)
- Alexis Tigreros
- Department of Chemistry, Bioorganic Compounds Research Group, Universidad de los Andes Carrera 1 No. 18A-10 Bogotá 111711 Colombia
| | - Jaime Portilla
- Department of Chemistry, Bioorganic Compounds Research Group, Universidad de los Andes Carrera 1 No. 18A-10 Bogotá 111711 Colombia
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García M, Romero I, Portilla J. Synthesis of Fluorescent 1,7-Dipyridyl-bis-pyrazolo[3,4- b:4',3'- e]pyridines: Design of Reversible Chemosensors for Nanomolar Detection of Cu 2. ACS OMEGA 2019; 4:6757-6768. [PMID: 31459798 PMCID: PMC6648379 DOI: 10.1021/acsomega.9b00226] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Accepted: 03/27/2019] [Indexed: 05/20/2023]
Abstract
An efficient access toward novel tridentate ligands based on 1,7-dipyridinyl-substituted bis-pyrazolo[3,4-b:4',3'-e]pyridines (BPs) and their usefulness as fluorescent probes for cation detection is reported. The synthesis proceeds by a three-step sequence starting from 2-chloropyridine (1), all reactions were performed using microwave radiation under solvent-free conditions, and an overall yield of up to 63% was obtained. Photophysical properties of three representative 1,7-dipyridinyl-BPs (PBPs, 6a-6c) substituted at position 4 with different donor (D) or acceptor (A) groups were investigated. Compounds exhibited large Stokes shift in different solvents and strong blue light emission in both solution and solid state, and quantum yields were as high as 88% for some of them; thus, a twisted intramolecular charge transfer (TICT) fluorescence mechanism characteristic of the 1,4,7-triaryl-BPs was confirmed. The 4-phenyl-substituted probe (Ph-PBP, 6b) was used successfully in the detection of some metals (Cu2+, Co2+, Ni2+, and Hg2+) by fluorescence quenching phenomena, which could be reversed in the presence of ethylenediamine. This probe showed a greater sensitivity toward Cu2+ in concentrations as low as 26 nM, and in the process of "on-off-on" for this fluorescent molecular switch, only 1 equiv of the analyte was used.
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Affiliation(s)
- Mauricio García
- Bioorganic Compounds Research
Group, Department of Chemistry, Universidad
de los Andes, Carrera 1 No. 18A-10, Bogotá 111711, Colombia
| | - Iván Romero
- Bioorganic Compounds Research
Group, Department of Chemistry, Universidad
de los Andes, Carrera 1 No. 18A-10, Bogotá 111711, Colombia
| | - Jaime Portilla
- Bioorganic Compounds Research
Group, Department of Chemistry, Universidad
de los Andes, Carrera 1 No. 18A-10, Bogotá 111711, Colombia
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