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Rather IA, Ali R. A Facile Deep Eutectic Solvent (DES) Mediated Green Approach for the Synthesis of Fluorescein and Phenolphthalein Dyes. ChemistrySelect 2023. [DOI: 10.1002/slct.202300749] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/30/2023]
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Wagay SA, Ali R. Unraveling the Potential Role of Deep Eutectic Solvents (DESs): Synthesis of Ketazines & Pyrazolines. ChemistrySelect 2023. [DOI: 10.1002/slct.202202779] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Shafieq Ahmad Wagay
- Organic and Supramolecular Functional Materials Research Laboratory Department of Chemistry, Jamia Millia Islamia, Okhla New Delhi 110025 India
| | - Rashid Ali
- Organic and Supramolecular Functional Materials Research Laboratory Department of Chemistry, Jamia Millia Islamia, Okhla New Delhi 110025 India
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Olyaei A, Sadeghpour M. A review on lawsone-based benzo[ a]phenazin-5-ol: synthetic approaches and reactions. RSC Adv 2022; 12:13837-13895. [PMID: 35541431 PMCID: PMC9082651 DOI: 10.1039/d2ra02139k] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2022] [Accepted: 05/02/2022] [Indexed: 12/05/2022] Open
Abstract
Phenazine systems are an important class of aza-polycyclic compounds that are easily found in nature and isolated as secondary metabolites primarily from Pseudomonas, Streptomyces, and a few other genera from soil or marine habitats. Moreover, various synthetic phenazine analogs are known for their pharmaceutical activities. Among various phenazines, benzo[a]phenazines are structural subunits in a variety of important natural products and have been given special attention due to their unique biological properties in various fields. In this review article, we highlight the synthesis of benzo[a]phenazin-5-ol derivatives from lawsone and benzene-1,2-diamines and their applications for the construction of a variety of five and six membered fused heterocycles such as pyranophenazines, spiropyranophenazines, pyridophenazines, furophenazines, benzochromenophenazines and oxazinophenazines during the period of 1995 to 2021.
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Affiliation(s)
- Abolfazl Olyaei
- Department of Chemistry, Payame Noor University (PNU) PO BOX 19395-4697 Tehran Iran +98-28-33374081 +98-28-33376366
| | - Mahdieh Sadeghpour
- Department of Chemistry, Takestan Branch, Islamic Azad University Takestan Iran +98-28-35270165 +98-28-35270167
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Martinho LA, Andrade CKZ. A greener approach for the synthesis of pyrido[2,3‐
d
]pyrimidine derivatives in glycerol under microwave heating. J Heterocycl Chem 2022. [DOI: 10.1002/jhet.4483] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Luan A. Martinho
- Instituto de Química, Laboratório de Química Metodológica e Orgânica Sintética (LaQMOS), Universidade de Brasília
| | - Carlos Kleber Z. Andrade
- Instituto de Química, Laboratório de Química Metodológica e Orgânica Sintética (LaQMOS), Universidade de Brasília
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Neto BAD, Rocha RO, Rodrigues MO. Catalytic Approaches to Multicomponent Reactions: A Critical Review and Perspectives on the Roles of Catalysis. Molecules 2021; 27:132. [PMID: 35011363 PMCID: PMC8746711 DOI: 10.3390/molecules27010132] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Revised: 12/20/2021] [Accepted: 12/23/2021] [Indexed: 01/17/2023] Open
Abstract
In this review, we comprehensively describe catalyzed multicomponent reactions (MCRs) and the multiple roles of catalysis combined with key parameters to perform these transformations. Besides improving yields and shortening reaction times, catalysis is vital to achieving greener protocols and to furthering the MCR field of research. Considering that MCRs typically have two or more possible reaction pathways to explain the transformation, catalysis is essential for selecting a reaction route and avoiding byproduct formation. Key parameters, such as temperature, catalyst amounts and reagent quantities, were analyzed. Solvent effects, which are likely the most neglected topic in MCRs, as well as their combined roles with catalysis, are critically discussed. Stereocontrolled MCRs, rarely observed without the presence of a catalytic system, are also presented and discussed in this review. Perspectives on the use of catalytic systems for improved and greener MCRs are finally presented.
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Affiliation(s)
- Brenno A. D. Neto
- Laboratory of Medicinal and Technological Chemistry, University of Brasília, Chemistry Institute (IQ-UnB), Campus Universitário Darcy Ribeiro, Brasilia 70910-900, Brazil; (R.O.R.); (M.O.R.)
| | - Rafael O. Rocha
- Laboratory of Medicinal and Technological Chemistry, University of Brasília, Chemistry Institute (IQ-UnB), Campus Universitário Darcy Ribeiro, Brasilia 70910-900, Brazil; (R.O.R.); (M.O.R.)
| | - Marcelo O. Rodrigues
- Laboratory of Medicinal and Technological Chemistry, University of Brasília, Chemistry Institute (IQ-UnB), Campus Universitário Darcy Ribeiro, Brasilia 70910-900, Brazil; (R.O.R.); (M.O.R.)
- School of Physics and Astronomy, Nottingham University, Nottingham NG72RD, UK
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Tiwari SK, Nazeef M, Verma A, Kumar A, Yadav V, Yadav N, Ansari S, Siddiqui IR. BF 3-etherate promoted facile access to vinyloxyimidazopyridines: a metal-free sustainable approach. Mol Divers 2021; 26:1259-1266. [PMID: 33993439 DOI: 10.1007/s11030-021-10228-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Accepted: 04/27/2021] [Indexed: 01/31/2023]
Abstract
A convenient and metal-free synthesis of vinyloxyimidazopyridine derivatives has been attained via BF3.OEt2 promoted one-pot multicomponent approach. This procedure involves a facile coupling of 2-aminopyridine derivatives with arylglyoxal and alkyne derivatives. BF3.OEt2 complexation has successfully catalyzed the reaction at room temperature. Utilization of transition metal-free catalyst, mild reaction conditions, easy handling and operational simplicity are key features of developed process.
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Affiliation(s)
- Saurabh Kumar Tiwari
- Laboratory of Green Synthesis, Department of Chemistry, University of Allahabad, Prayagraj, 211002, India
| | - Mohd Nazeef
- Laboratory of Green Synthesis, Department of Chemistry, University of Allahabad, Prayagraj, 211002, India
| | - Ankit Verma
- Laboratory of Green Synthesis, Department of Chemistry, University of Allahabad, Prayagraj, 211002, India
| | - Ankit Kumar
- Department of Chemistry, University of Delhi, New Delhi, India
| | - Vikas Yadav
- Laboratory of Green Synthesis, Department of Chemistry, University of Allahabad, Prayagraj, 211002, India
| | - Neetu Yadav
- Laboratory of Green Synthesis, Department of Chemistry, University of Allahabad, Prayagraj, 211002, India
| | - Saif Ansari
- Laboratory of Green Synthesis, Department of Chemistry, University of Allahabad, Prayagraj, 211002, India
| | - I R Siddiqui
- Laboratory of Green Synthesis, Department of Chemistry, University of Allahabad, Prayagraj, 211002, India.
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Cunningham C, Cloyd M, Phillips A, Khan S, Whalen K, Kesharwani T. A one-pot successive cyclization-alkylation strategy for the synthesis of 2,3-disubstituted benzo[ b]thiophenes. Org Biomol Chem 2021; 19:4107-4117. [PMID: 33978029 PMCID: PMC8211089 DOI: 10.1039/d1ob00358e] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
In this study, a new environmentally benign iodine-mediated one-pot iodocyclization/alkylation strategy for the synthesis of benzo[b]thiophene derivatives starting from 2-alkynylthioanisoles was developed. The synthesis of a diverse population of 2,3-disubstituted benzo[b]thiophenes was achieved in high yields by employing moderate reaction conditions using 1,3-dicarbonyl substrates as the nucleophile and various substituted propargyl alcohols as both the cyclization precursor and the alkylating agent. This method resulted in the formation of a series of complex structures obtained in a single step. Additionally, a strategy was devised for the one pot iodocyclization/oxidation of propargyl alcohols into carbonyl functionalized benzo[b]thiophene structures. These green one-pot reaction processes were designed to reduce wastes and byproducts while generating a complex substitution pattern on the benzo[b]thiophene structure. The reported methodologies may be used to synthesize more functionalized benzo[b]thiophene structures that can be used in both biomedical and organic electronic applications.
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Affiliation(s)
- Christopher Cunningham
- Department of Chemistry, University of West Florida, 11000 University Pkway, Pensacola, Fl 32514, USA.
| | - Matthew Cloyd
- Department of Chemistry, University of West Florida, 11000 University Pkway, Pensacola, Fl 32514, USA.
| | - Aimee Phillips
- Department of Chemistry, University of West Florida, 11000 University Pkway, Pensacola, Fl 32514, USA.
| | - Soha Khan
- Department of Chemistry, University of West Florida, 11000 University Pkway, Pensacola, Fl 32514, USA.
| | - Katherine Whalen
- Department of Chemistry, University of West Florida, 11000 University Pkway, Pensacola, Fl 32514, USA.
| | - Tanay Kesharwani
- Department of Chemistry, University of West Florida, 11000 University Pkway, Pensacola, Fl 32514, USA.
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