1
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Kumar S, Ali Shah B. Exploring the Divergent Reactivity of Vinyl Radicals Emanating from Alkynes and Thiols via Photoredox Catalysis. Chem Asian J 2023; 18:e202300693. [PMID: 37656003 DOI: 10.1002/asia.202300693] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2023] [Revised: 08/30/2023] [Accepted: 09/01/2023] [Indexed: 09/02/2023]
Abstract
Organic chemistry has seen a surge in visible-light-driven transformations, which offer unique reaction pathways and access to new synthetic possibilities. We aim to provide a comprehensive understanding of state-of-the-art photo-mediated alkyne functionalization, with a focus on the reactive behavior of vinyl radicals. This review outlines our contributions to the field, including developing new methods for forming carbon-carbon and carbon-heteroatom bonds.
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Affiliation(s)
- Sourav Kumar
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
- Natural Products & Medicinal Chemistry Division, CSIR-Indian Institute of Integrative Medicine, Jammu, 180001, India
| | - Bhahwal Ali Shah
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
- Natural Products & Medicinal Chemistry Division, CSIR-Indian Institute of Integrative Medicine, Jammu, 180001, India
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2
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A Visible-Light-Triggered & Rhodamine-B Catalyzed Eco-friendly Synthesis of Benzopyrano[2,3-c]pyrazoles. Catal Letters 2023. [DOI: 10.1007/s10562-023-04279-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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3
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Ganie MA, Bhat MUS, Rizvi MA, Raheem S, Shah BA. Photoredox-Promoted Selective Synthesis of C-5 Thiolated 2-Aminothiazoles from Terminal Alkynes. Org Lett 2022; 24:7757-7762. [PMID: 36240126 DOI: 10.1021/acs.orglett.2c03064] [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
A mild photoredox approach enabling the first one-step synthesis of thiolated 2-aminothiazoles has been reported. Notably, the incorporation of thio group on electron-rich heteroarenes such as aminothiazoles via conventional nucleophilic aromatic substitution (SNAr) presents a significant challenge owing to polarity mismatch. Herein, we present a remarkable site-selective installation of thio group at the C-5 position of the electron-rich aminothiazole skeleton and successfully used them for the postfunctionalization of drugs and natural products.
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Affiliation(s)
- Majid Ahmad Ganie
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India.,Natural Product & Medicinal Chemistry, CSIR-Indian Institute of Integrative Medicine, Jammu 180001, India
| | - Muneer-Ul-Shafi Bhat
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India.,Natural Product & Medicinal Chemistry, CSIR-Indian Institute of Integrative Medicine, Jammu 180001, India
| | | | - Shabnam Raheem
- Department of Chemistry, University of Kashmir, Srinagar 190006, India
| | - Bhahwal Ali Shah
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India.,Natural Product & Medicinal Chemistry, CSIR-Indian Institute of Integrative Medicine, Jammu 180001, India
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4
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Sahil, Kaur K, Jaitak V. Thiazole and Related Heterocyclic Systems as Anticancer Agents: A Review on Synthetic Strategies, Mechanisms of Action and SAR Studies. Curr Med Chem 2022; 29:4958-5009. [DOI: 10.2174/0929867329666220318100019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Revised: 01/06/2022] [Accepted: 01/12/2022] [Indexed: 11/22/2022]
Abstract
Background:
Cancer is the second leading cause of death throughout the world. Many anticancer drugs are commercially available, but lack of selectivity, target specificity, cytotoxicity and development of resistance lead to serious side effects. There have been several experiments going on to develop compounds with minor or no side effects.
Objective:
This review mainly emphasizes synthetic strategies, SAR studies, and mechanism of action for thiazole, benzothiazole, and imidazothiazole containing compounds as anticancer agents.
Methods:
Recent literature related to thiazole and thiazole-related derivatives endowed with encouraging anticancer potential is reviewed. This review emphasizes contemporary strategies used for the synthesis of thiazole and related derivatives, mechanistic targets, and comprehensive structural activity relationship studies to provide perspective into the rational design of high-efficiency thiazole-based anticancer drug candidates.
Results:
Exhaustive literature survey indicated that thiazole derivatives are associated with properties of inducing
apoptosis and disturbing tubulin assembly. Thiazoles are also associated with the inhibition of NFkB/mTOR/PI3K/AkT and regulation of estrogen-mediated activity. Furthermore, thiazole derivatives have been found to modulate critical targets such as topoisomerase and HDAC.
Conclusion:
Thiazole derivatives seem to be quite competent and act through various mechanisms. Some of the thiazole derivatives, such as compounds 29, 40, 62, and 74a with IC50 values of 0.05 μM, 0.00042 μM, 0.18 μM, and 0.67 μM, respectively not only have anticancer activity but they also have lower toxicity and better absorption. Therefore, some other similar compounds could be investigated to aid in the development of anticancer pharmacophores.
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Affiliation(s)
- Sahil
- Department of Pharmaceutical Sciences and Natural Products, Central University of Punjab, Ghudda, Bathinda (Pb.), India
| | - Kamalpreet Kaur
- Department of Pharmaceutical Sciences and Natural Products, Central University of Punjab, Ghudda, Bathinda (Pb.), India
| | - Vikas Jaitak
- Department of Pharmaceutical Sciences and Natural Products, Central University of Punjab, Ghudda, Bathinda (Pb.), India
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5
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Aggarwal R, Hooda M, Kumar P, Jain N, Dubey GP, Chugh H, Chandra R. Visible-Light-Prompted Synthesis and Binding Studies of 5,6-Dihydroimidazo[2,1- b]thiazoles with BSA and DNA Using Biophysical and Computational Methods. J Org Chem 2022; 87:3952-3966. [PMID: 35235320 DOI: 10.1021/acs.joc.1c02471] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Fused heterocyclic systems containing a bridgehead nitrogen atom have emerged as imperative pharmacophores in the design and development of new drugs. Among these heterocyclic moieties, the imidazothiazole scaffold has long been used in medicinal chemistry for the treatment of various diseases. In this study, we have established a simplistic and environmentally safe regioselective protocol for the synthesis of 5,6-dihydroimidazo[2,1-b]thiazole derivatives from easily available reactants. The reaction proceeds through in situ formation of the α-bromodiketones ensuing trap with imidazolidine-2-thione to provide these versatile bicyclic heterocycles in excellent yields. The synthesized compounds were screened through the molecular docking approach for the most stable complex formation with bovine serum albumin (BSA) and calf thymus deoxyribonucleic acid (ctDNA). The selected compound was further studied using ex vivo binding studies, which revealed moderate interactions with BSA and ctDNA. The binding studies were performed using biophysical approaches including UV-visible spectroscopy, steady-state fluorescence, circular dichroism (CD), and viscosity parameters.
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Affiliation(s)
- Ranjana Aggarwal
- Department of Chemistry, Kurukshetra University, Kurukshetra 136119, Haryana, India.,CSIR-National Institute of Science Communication and Policy Research, New Delhi 110012, India
| | - Mona Hooda
- Department of Chemistry, Kurukshetra University, Kurukshetra 136119, Haryana, India
| | - Prince Kumar
- Department of Chemistry, Kurukshetra University, Kurukshetra 136119, Haryana, India
| | - Naman Jain
- Department of Chemistry, Kurukshetra University, Kurukshetra 136119, Haryana, India
| | - Gyan Prakash Dubey
- Department of Chemistry, Kurukshetra University, Kurukshetra 136119, Haryana, India
| | - Heerak Chugh
- Department of Chemistry, University of Delhi, New Delhi 110007, India
| | - Ramesh Chandra
- Department of Chemistry, University of Delhi, New Delhi 110007, India
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6
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Aggarwal R, Hooda M, Kumar P, Torralba MC. Visible-light-mediated regioselective synthesis of novel thiazolo[3,2- b][1,2,4]triazoles: advantageous synthetic application of aqueous conditions. Org Biomol Chem 2022; 20:584-595. [PMID: 34989753 DOI: 10.1039/d1ob02194j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
From a green chemistry perspective, sustainable irradiation as the power source and water as the solvent have certainly grabbed the attention of chemists in recent times because their use helps reduce the hazardous ecological footprints of organic synthesis. In the present work, we have established an efficient, straightforward and green protocol for the regioselective synthesis of novel functionalized thiazolo[3,2-b][1,2,4]triazoles. The visible-light-mediated catalyst-free reaction of diversely substituted α-bromodiketones, generated in situ by the reaction of NBS and 1,3-diketones, with 3-mercapto[1,2,4]triazoles under aqueous conditions afforded thiazolo[3,2-b][1,2,4]triazole derivatives in excellent yields. The structure of the regioisomer has been confirmed explicitly by heteronuclear 2D-NMR [(1H-13C) HMBC, (1H-13C) HMQC] spectroscopic and X-ray crystallographic studies. Radical initiating and trapping experiments supported the free radical mechanism for the cyclization.
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Affiliation(s)
- Ranjana Aggarwal
- Department of Chemistry, Kurukshetra University, Kurukshetra-136119, Haryana, India.,Council of Scientific and Industrial Research-National Institute of Science Communication and Policy Research, New Delhi 110012, India.
| | - Mona Hooda
- Department of Chemistry, Kurukshetra University, Kurukshetra-136119, Haryana, India
| | - Prince Kumar
- Department of Chemistry, Kurukshetra University, Kurukshetra-136119, Haryana, India
| | - Mari Carmen Torralba
- Departamento de Química Inorganica, Facultad de Ciencias Químicas, Universidad Complutense de Madrid (UCM), E-28040, Madrid, Spain
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7
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Srivastava V, Singh PK, Tivari S, Singh PP. Visible light photocatalysis in the synthesis of pharmaceutically relevant heterocyclic scaffolds. Org Chem Front 2022. [DOI: 10.1039/d1qo01602d] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Visible light and photoredox catalysis have emerged as a powerful and long-lasting tool for organic synthesis, demonstrating the importance of a variety of chemical bond formation methods.
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Affiliation(s)
- Vishal Srivastava
- Department of Chemistry, CMP Degree College, University of Allahabad, Prayagraj 211002, India
| | - Pravin K. Singh
- Department of Chemistry, CMP Degree College, University of Allahabad, Prayagraj 211002, India
| | - Shraddha Tivari
- Department of Chemistry, CMP Degree College, University of Allahabad, Prayagraj 211002, India
| | - Praveen P. Singh
- Department of Chemistry, United College of Engineering & Research, Naini, Prayagraj 211010, India
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8
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Aggarwal R, Hooda M. Visible-light promoted serendipitous synthesis of 3,5-diaryl-1,2,4-thiadiazoles via oxidative dimerization of thiobenzamides. J Sulphur Chem 2021. [DOI: 10.1080/17415993.2021.2005064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Ranjana Aggarwal
- Department of Chemistry, Kurukshetra University, Kurukshetra, India
- CSIR-National Institute of Science Communication and Policy Research, New Delhi, India
| | - Mona Hooda
- Department of Chemistry, Kurukshetra University, Kurukshetra, India
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9
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Aggarwal R, Jain N, Sharma S, Kumar P, Dubey GP, Chugh H, Chandra R. Visible-light driven regioselective synthesis, characterization and binding studies of 2-aroyl-3-methyl-6,7-dihydro-5H-thiazolo[3,2-a]pyrimidines with DNA and BSA using biophysical and computational techniques. Sci Rep 2021; 11:22135. [PMID: 34764313 PMCID: PMC8586366 DOI: 10.1038/s41598-021-01037-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2021] [Accepted: 10/15/2021] [Indexed: 11/09/2022] Open
Abstract
In recent times, fused azaheterocycles emerged as impressive therapeutic agents. Binding studies of such azaheterocycles with biomolecules is an important subject for pharmaceutical and biochemical studies aiming at the design and development of new drugs. Fused heterocyclic scaffolds, such as thiazolopyrmidines have long been used in the pharmaceutical industry for the treatment of various diseases. In this study, we have accomplished a regioselective synthesis of 2-aroyl-3-methyl-6,7-dihydro-5H-thiazolo[3,2-a]pyrimidines by the reaction of tetrahydropyrimidine-2(H)-thione with α-bromo-1,3-diketones, generated in situ from 1,3-diketones and NBS, using visible light as an inexpensive, green and renewable energy source under mild reaction conditions with wide-ranging substrate scope. The regioisomer was characterized unambiguously by 2D-NMR [1H-13C] HMBC and [1H-13C] HMQC spectroscopy. In silico toxicity data analysis showed the low toxicity risks of the synthesized compounds. Computational molecular docking studies were carried out to examine the interaction of thiazolo[3,2-a]pyrimidines with calf-thymus DNA (ct-DNA) and Bovine Serum Albumin (BSA). Moreover, different spectroscopic approaches viz. steady-state fluorescence, competitive displacement assay, UV-visible and circular dichroism (CD) along with viscosity measurements were employed to investigate the binding mechanisms of thiazolo[3,2-a]pyrimidines with DNA and BSA. The results thus obtained revealed that thiazolo[3,2-a]pyrimidines offer groove bindings with DNA and showed moderate bindings with BSA.
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Affiliation(s)
- Ranjana Aggarwal
- Department of Chemistry, Kurukshetra University, Kurukshetra, Haryana, 136119, India.
- Council of Scientific and Industrial Research, National Institute of Science Communication and Policy Research, New Delhi, 110012, India.
| | - Naman Jain
- Department of Chemistry, Kurukshetra University, Kurukshetra, Haryana, 136119, India
| | - Shilpa Sharma
- Department of Chemistry, Kurukshetra University, Kurukshetra, Haryana, 136119, India
| | - Prince Kumar
- Department of Chemistry, Kurukshetra University, Kurukshetra, Haryana, 136119, India
| | - Gyan Prakash Dubey
- Department of Chemistry, Kurukshetra University, Kurukshetra, Haryana, 136119, India
| | - Heerak Chugh
- Department of Chemistry, University of Delhi, New Delhi, 110007, India
| | - Ramesh Chandra
- Department of Chemistry, University of Delhi, New Delhi, 110007, India
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10
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Goswami M, Dutta A, Paul P, Nongkhlaw R. Recent Developments on Catalyst‐Free, Visible‐Light‐Triggered Synthesis of Heterocyclic Scaffolds and Their Mechanistic Study. ChemistrySelect 2021. [DOI: 10.1002/slct.202102696] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Munmee Goswami
- Centre for Advanced Studies in Chemistry Department of Chemistry North-Eastern Hill University Shillong 793022 INDIA
| | - Arup Dutta
- Centre for Advanced Studies in Chemistry Department of Chemistry North-Eastern Hill University Shillong 793022 INDIA
| | - Pooja Paul
- Centre for Advanced Studies in Chemistry Department of Chemistry North-Eastern Hill University Shillong 793022 INDIA
| | - Rishanlang Nongkhlaw
- Centre for Advanced Studies in Chemistry Department of Chemistry North-Eastern Hill University Shillong 793022 INDIA
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11
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Gorji S, Ghorbani-Vaghei R, Alavinia S. Sodium alginate: Biopolymeric catalyst for the synthesis of 2-amino-4-arylthiazole derivatives in aqueous medium. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.129900] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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12
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Saliyeva LN, Diachenko IV, Vas’kevich RI, Slyvka NY, Vovk MV. Imidazothiazoles and their Hydrogenated Analogs: Methods of Synthesis and Biomedical Potential. Chem Heterocycl Compd (N Y) 2020. [DOI: 10.1007/s10593-020-02827-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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13
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Khandebharad A, Sarda S, Kulkarni P, Agrawal B. Visible Light Assisted Synthesis of 5-Aryl-1,2,4-thiazolidine-3-thiones Under Catalyst-free Condition. CURRENT GREEN CHEMISTRY 2020. [DOI: 10.2174/2213346107999200729131533] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Light energy can be considered as an ideal eco-friendly source of energy for green chemistry.
This perspective was used to synthesize 5-aryl-1,2,4-thiazolidine-3-thiones derivative as a quick,
efficient and highly improved protocol. The present method developed an energy competent and integrated
technique by one-pot condensations of aromatic aldehyde and thiosemicarbazide under the
catalyst-free condition in aqueous-alcoholic media. The impact of light on reaction along with mechanical
stirring provided a prominent yield of the product. The mild reaction conditions, short reaction
time and easy workup procedure, avoidance of heavy metal catalyst and harsh reaction conditions
make this protocol greener.
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Affiliation(s)
| | - Swapnil Sarda
- Department of Chemistry, J.E.S. College, Jalna (MS), India
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14
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Singh H, Kamal A, Kumari S, Kumar D, Maury SK, Srivastava V, Singh S. Eosin Y-Catalyzed Synthesis of 3-Aminoimidazo[1,2- a]Pyridines via the HAT Process under Visible Light through Formation of the C-N Bond. ACS OMEGA 2020; 5:29854-29863. [PMID: 33251420 PMCID: PMC7689671 DOI: 10.1021/acsomega.0c03941] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/16/2020] [Accepted: 10/27/2020] [Indexed: 06/12/2023]
Abstract
A comfortable, environment-friendly, and metal-free approach for synthesizing the biologically important moiety aminoimidazopyridine through the multicomponent reaction of benzylamine, 2-aminopyridine, and t-butyl isocyanide under visible light using eosin Y as a photocatalyst has been developed. Inexpensive, nontoxic, the effortless accessibility of starting materials, and nonparticipation of particular glassware and a photoreactor system are important qualities of the current approach. Strangely, the mild conditions, environment-friendly, and enumerating tolerance of an extensive range of both electron-donating and electron-withdrawing groups are additional features of the approach.
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Affiliation(s)
- Himanshu
Kumar Singh
- Department of Chemistry, Indian Institute of Technology (BHU), Varanasi 221005, Uttar Pradesh, India
| | - Arsala Kamal
- Department of Chemistry, Indian Institute of Technology (BHU), Varanasi 221005, Uttar Pradesh, India
| | - Savita Kumari
- Department of Chemistry, Indian Institute of Technology (BHU), Varanasi 221005, Uttar Pradesh, India
| | - Dhirendra Kumar
- Department of Chemistry, Indian Institute of Technology (BHU), Varanasi 221005, Uttar Pradesh, India
| | - Suresh Kumar Maury
- Department of Chemistry, Indian Institute of Technology (BHU), Varanasi 221005, Uttar Pradesh, India
| | - Vandana Srivastava
- Department of Chemistry, Indian Institute of Technology (BHU), Varanasi 221005, Uttar Pradesh, India
| | - Sundaram Singh
- Department of Chemistry, Indian Institute of Technology (BHU), Varanasi 221005, Uttar Pradesh, India
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15
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Ujwaldev SM, Harry NA, Neetha M, Anilkumar G. Novel synthesis of
2‐Aminothiazoles
via Fe(
III
)‐Iodine‐catalyzed Hantzsch‐type condensation. J Heterocycl Chem 2020. [DOI: 10.1002/jhet.4166] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
| | - Nissy Ann Harry
- School of Chemical Sciences Mahatma Gandhi University Kottayam India
| | - Mohan Neetha
- School of Chemical Sciences Mahatma Gandhi University Kottayam India
| | - Gopinathan Anilkumar
- School of Chemical Sciences Mahatma Gandhi University Kottayam India
- Advanced Molecular Materials Research Centre (AMMRC) Mahatma Gandhi University Kottayam India
- Institute for Integrated Programmes and Research in Basic Sciences (IIRBS) Mahatma Gandhi University Kottayam India
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16
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Afsina Abdulla CM, Neetha M, Aneeja T, Anilkumar G. Synthesis and Applications of Imidazothiazoles: An Overview. ChemistrySelect 2020. [DOI: 10.1002/slct.202002842] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- C. M. Afsina Abdulla
- School of Chemical Sciences Mahatma Gandhi University Priyadarsini Hills, Kottayam Kerala India 686560
| | - Mohan Neetha
- School of Chemical Sciences Mahatma Gandhi University Priyadarsini Hills, Kottayam Kerala India 686560
| | - Thaipparambil Aneeja
- School of Chemical Sciences Mahatma Gandhi University Priyadarsini Hills, Kottayam Kerala India 686560
| | - Gopinathan Anilkumar
- School of Chemical Sciences Mahatma Gandhi University Priyadarsini Hills, Kottayam Kerala India 686560
- Institute for Integrated Programmes and Research in Basic Sciences (IIRBS) Mahatma Gandhi University Priyadarsini Hills, Kottayam Kerala India 686560
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17
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Zhao J, Xiao Q, Chen J, Xu J. Metal‐Free Synthesis of Imidazo[2,1‐
b
]thiazoles from Thioimidazoles and Ketones Mediated by Selectfluor. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000815] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Jinwu Zhao
- School of Pharmacy Guangdong Medical University No.1 Xincheng Blvd, Songshan Lake National High‐tech Industrial Development Zone 523808 Dongguan China
- Key Laboratory of Big Data Mining and Precision Drug Design Guangdong Medical University No.1 Xincheng Blvd, Songshan Lake National High‐tech Industrial Development Zone 523808 Dongguan China
| | - Qiannan Xiao
- School of Pharmacy Guangdong Medical University No.1 Xincheng Blvd, Songshan Lake National High‐tech Industrial Development Zone 523808 Dongguan China
- Key Laboratory of Big Data Mining and Precision Drug Design Guangdong Medical University No.1 Xincheng Blvd, Songshan Lake National High‐tech Industrial Development Zone 523808 Dongguan China
| | - Jiaxi Chen
- School of Pharmacy Guangdong Medical University No.1 Xincheng Blvd, Songshan Lake National High‐tech Industrial Development Zone 523808 Dongguan China
| | - Jingxiu Xu
- School of Pharmacy Guangdong Medical University No.1 Xincheng Blvd, Songshan Lake National High‐tech Industrial Development Zone 523808 Dongguan China
- Key Laboratory of Big Data Mining and Precision Drug Design Guangdong Medical University No.1 Xincheng Blvd, Songshan Lake National High‐tech Industrial Development Zone 523808 Dongguan China
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18
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Narasimhamurthy KH, Sajith AM, Joy MN, Rangappa KS. An Overview of Recent Developments in the Synthesis of Substituted Thiazoles. ChemistrySelect 2020. [DOI: 10.1002/slct.202001133] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
| | - Ayyiliath M. Sajith
- Postgraduate and Research Department of ChemistryGovernment College KasaragodKannur University Kasaragod Kerala 671123 India
| | - Muthipeedika N. Joy
- Innovation Center for Chemical and Pharmaceutical TechnologiesInstitute of Chemical TechnologyUral Federal University 19 Mira Street Yekaterinburg 620002 Russia
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19
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Nazeef M, Shivhare KN, Ali S, Ansari K, Ansari MD, Tiwari SK, Yadav V, Siddiqui I. Visible-light-promoted C N and C S bonds formation: A catalyst and solvent-free photochemical approach for the synthesis of 1,3-thiazolidin-4-ones. J Photochem Photobiol A Chem 2020. [DOI: 10.1016/j.jphotochem.2019.112347] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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20
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Pandey YK, Mishra A, Rai P, Singh J, Singh J, Singh RK. DBU Catalysis: An Efficient Synthetic Strategy for 5,7-disubstituted-1,2,4- triazolo[1,5-a]pyrimidines. Curr Org Synth 2020; 17:73-80. [PMID: 32103720 DOI: 10.2174/1570179417666191216123339] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2019] [Revised: 08/09/2019] [Accepted: 12/15/2019] [Indexed: 11/22/2022]
Abstract
AIMS AND OBJECTIVES An efficient and facile DBU catalysed synthesis of highly significant motif 5,7-disubstituted-1,2,4-triazolo[1,5-a]pyrimidines under solvent-free condition has been reported. MATERIALS AND METHODS To a round bottom flask, 1.0 mmol of chalcone (1), 1.5 mmol of 3-amino-1,2,4- triazole (2) and 30 mol% of DBU were added at 70 °C and stirred in solvent-free condition. After the completion of the reaction (monitored by TLC), water (10 ml) was added. The aqueous layer was extracted with ethyl acetate (3 ×10 ml). The combined organic layers were dried over anhydrous Na2SO4. The combined organic layers were evaporated under reduced pressure and the resulting crude product was purified by column chromatography by using ethyl acetate and hexane as eluent. RESULTS Reaction using chalcone and 3-amino-1,2,4-triazole as model substrates were carried out under different reaction conditions and it was observed that 30 mol% of DBU under the solvent-free condition at 70 °C was the optimum temperature for the proposed synthesis. CONCLUSION Use of DBU (an organocatalyst) as a base, operational simplicity, high yield of products and short reaction time are some of the significant advantages associated with the proposed strategy.
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Affiliation(s)
- Yogesh K Pandey
- Bioorganic Research Laboratory, Department of Chemistry, University of Allahabad, Allahabad-211002, India
| | - Anu Mishra
- Environmentally Benign Synthesis Lab, Department of Chemistry, University of Allahabad, Allahabad-211002, India
| | - Pratibha Rai
- Environmentally Benign Synthesis Lab, Department of Chemistry, University of Allahabad, Allahabad-211002, India
| | - Jaya Singh
- Department of Chemistry, LRPG College, Sahibabad, Uttar Pradesh, India
| | - Jagdamba Singh
- Environmentally Benign Synthesis Lab, Department of Chemistry, University of Allahabad, Allahabad-211002, India
| | - Ramendra K Singh
- Bioorganic Research Laboratory, Department of Chemistry, University of Allahabad, Allahabad-211002, India
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21
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Mishra A, Pandey YK, Tufail F, Singh J, Singh J. A Convenient and Green Synthetic Approach for Benzo[a]pyrano[2,3-c]phenazines via Supramolecular Catalysis. Catal Letters 2019. [DOI: 10.1007/s10562-019-03057-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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22
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Wu J, Luo H, Wang T, Sun H, Zhang Q, Chai Y. Diverse synthesis of pyrimido[1,2-a]benzimidazoles and imidazo[2,1-b]benzothiazoles via CuI-catalyzed decarboxylic multicomponent reactions of heterocyclic azoles, aldehydes and alkynecarboxylic acids. Tetrahedron 2019. [DOI: 10.1016/j.tet.2019.01.009] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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23
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Saroha M, Khurana JM. Acetic acid mediated regioselective synthesis of 2,4,5-trisubstituted thiazoles by a domino multicomponent reaction. NEW J CHEM 2019. [DOI: 10.1039/c9nj01717h] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Acetic acid mediated regioselective synthesis of novel 2,4,5-trisubstituted thiazole derivatives has been reported by a domino reaction of thiosemicarbazide and aldehydes/ketones/isatin, to generate thiosemicarbazones (in situ) followed by addition of arylglyoxal and active methylene/activated C–H acids/pyrazole/indole in ethanol at 80 °C.
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Affiliation(s)
- Mohit Saroha
- Department of Chemistry
- University of Delhi
- Delhi-110007
- India
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24
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Lemir ID, Castro-Godoy WD, Heredia AA, Schmidt LC, Argüello JE. Metal- and photocatalyst-free synthesis of 3-selenylindoles and asymmetric diarylselenides promoted by visible light. RSC Adv 2019; 9:22685-22694. [PMID: 35519497 PMCID: PMC9067025 DOI: 10.1039/c9ra03642c] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Accepted: 07/09/2019] [Indexed: 12/30/2022] Open
Abstract
A novel and sustainable procedure was developed for the synthesis of 3-selenylindoles employing diorganyl diselenides and indoles or electron-rich arenes as starting materials. Visible blue light was used to promote the reaction without employing transition metal complexes or organic photocatalysts as sensitizers. Additives such as strong oxidants or bases were not required. Moreover, ethanol was employed as a benign solvent under mild reaction conditions. Through this easy and eco-friendly approach, several 3-selenylindoles and a number of asymmetric diarylselenides were obtained in good to excellent isolated yields. A novel and sustainable procedure for the synthesis of 3-selenylindoles employing diorganyl diselenides and indoles or electron-rich arenes and promoted by visible light was developed.![]()
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Affiliation(s)
- Ignacio D. Lemir
- INFIQC-CONICET-UNC
- Departamento de Química Orgánica
- Facultad de Ciencias Químicas
- Universidad Nacional de Córdoba
- Ciudad Universitaria
| | - Willber D. Castro-Godoy
- INFIQC-CONICET-UNC
- Departamento de Química Orgánica
- Facultad de Ciencias Químicas
- Universidad Nacional de Córdoba
- Ciudad Universitaria
| | - Adrián A. Heredia
- INFIQC-CONICET-UNC
- Departamento de Química Orgánica
- Facultad de Ciencias Químicas
- Universidad Nacional de Córdoba
- Ciudad Universitaria
| | - Luciana C. Schmidt
- INFIQC-CONICET-UNC
- Departamento de Química Orgánica
- Facultad de Ciencias Químicas
- Universidad Nacional de Córdoba
- Ciudad Universitaria
| | - Juan E. Argüello
- INFIQC-CONICET-UNC
- Departamento de Química Orgánica
- Facultad de Ciencias Químicas
- Universidad Nacional de Córdoba
- Ciudad Universitaria
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25
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Mohammadi H, Shaterian HR. Visible Light Irradiation: A Green-Pathway-Promoted Pseudo Four Component Synthesis of Chromeno[4,3,2-de
][1,6]naphthyridine Derivatives under Mild, and Catalyst-Free Conditions. ChemistrySelect 2018. [DOI: 10.1002/slct.201802083] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Hadi Mohammadi
- Department of Chemistry; Faculty of Sciences; University of Sistan and Baluchestan PO Box 98135-674, Zahedan; Iran
| | - Hamid Reza Shaterian
- Department of Chemistry; Faculty of Sciences; University of Sistan and Baluchestan PO Box 98135-674, Zahedan; Iran
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26
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Mishra A, Rai P, Singh J, Singh J. A Visible-Light-Mediated Protocol: One-Pot-Three-Component, Sustainable Synthesis of 1,3,4-Thiadiazines. ChemistrySelect 2018. [DOI: 10.1002/slct.201801508] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Anu Mishra
- Environmentally Benign Synthesis Lab; Department of Chemistry; University of Allahabad; Allahabad-211002 India) Tel.: +919415218507
| | - Pratibha Rai
- Environmentally Benign Synthesis Lab; Department of Chemistry; University of Allahabad; Allahabad-211002 India) Tel.: +919415218507
| | - Jaya Singh
- Department of Chemistry; LRPG College, Sahibabad, Uttar Pradesh; India
| | - Jagdamba Singh
- Environmentally Benign Synthesis Lab; Department of Chemistry; University of Allahabad; Allahabad-211002 India) Tel.: +919415218507
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27
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Roslan II, Ng KH, Gondal MA, Basheer C, Dastageer MA, Jaenicke S, Chuah GK. Visible Light-Mediated Coupling of Thioureas and 1,3-Dicarbonyls: Towards a Leaving Group-Free Synthesis of Aminothiazoles. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201701565] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Irwan Iskandar Roslan
- Department of Chemistry; National University of Singapore; 3 Science Drive 3 Singapore 117543
| | - Kian-Hong Ng
- Department of Chemistry; National University of Singapore; 3 Science Drive 3 Singapore 117543
| | - Mohammed Ashraf Gondal
- Physics Department; King Fahd University of Petroleum & Minerals; Dhahran 31261 Saudi Arabia
| | - Chanbasha Basheer
- Chemistry Department; King Fahd University of Petroleum & Minerals; Dhahran 31261 Saudi Arabia
| | - Mohamed A. Dastageer
- Physics Department; King Fahd University of Petroleum & Minerals; Dhahran 31261 Saudi Arabia
| | - Stephan Jaenicke
- Department of Chemistry; National University of Singapore; 3 Science Drive 3 Singapore 117543
| | - Gaik-Khuan Chuah
- Department of Chemistry; National University of Singapore; 3 Science Drive 3 Singapore 117543
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28
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Cao B, Wei Y, Ye C, Wu LZ, Shi M. Mechanistic studies on the atmosphere and light tuned synthesis of cyclobuta/penta[b]indoles. Org Chem Front 2018. [DOI: 10.1039/c8qo00306h] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
The mechanism of the atmosphere and light tuned highly diastereoselective synthesis of cyclobuta/penta[b]indoles has been systematically investigated using kinetic and spectroscopic methods.
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Affiliation(s)
- Bo Cao
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals
- School of Chemistry & Molecular Engineering
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Yin Wei
- State Key Laboratory of Organometallic Chemistry
- Center for Excellence in Molecular Synthesis
- University of Chinese Academy of Sciences
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
| | - Chen Ye
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials
- Technical Institute of Physics and Chemistry
- University of Chinese Academy of Sciences
- Chinese Academy of Sciences
- Beijing
| | - Li-Zhu Wu
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials
- Technical Institute of Physics and Chemistry
- University of Chinese Academy of Sciences
- Chinese Academy of Sciences
- Beijing
| | - Min Shi
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals
- School of Chemistry & Molecular Engineering
- East China University of Science and Technology
- Shanghai 200237
- China
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29
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Shivhare KN, Jaiswal MK, Srivastava A, Tiwari SK, Siddiqui IR. Visible-light-activated C–C and C–N bond formation in the synthesis of imidazo[1,2-a]pyridines and imidazo[2,1-b]thiazoles under catalyst and solvent-free conditions. NEW J CHEM 2018. [DOI: 10.1039/c8nj03339k] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Synthesis of 3-aminoimidazo-fused heterocycles via the Groebke–Blackburn–Bienaymé reaction using a universally available energy source under catalyst and solvent-free conditions.
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Affiliation(s)
- Km Neha Shivhare
- Laboratory of Green Synthesis
- Department of Chemistry
- University of Allahabad
- Allahabad-211002
- India
| | - Manish K. Jaiswal
- Indian Institute of Technology Delhi
- Department of Chemistry
- Hauz Khas
- New Delhi 110016
- India
| | - Anushree Srivastava
- Laboratory of Green Synthesis
- Department of Chemistry
- University of Allahabad
- Allahabad-211002
- India
| | - Saurabh K. Tiwari
- Laboratory of Green Synthesis
- Department of Chemistry
- University of Allahabad
- Allahabad-211002
- India
| | - I. R. Siddiqui
- Laboratory of Green Synthesis
- Department of Chemistry
- University of Allahabad
- Allahabad-211002
- India
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30
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Mishra A, Rai P, Pandey YK, Singh J, Singh J. An Eco-Sustainable Synthetic Approach for 4,5-Dihydro-1H
-pyrazoles via DBU Catalysis in Micellar Medium. ChemistrySelect 2017. [DOI: 10.1002/slct.201702400] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Anu Mishra
- Environmentally Benign Synthesis Lab, Department of Chemistry; University of Allahabad; Allahabad- 211002 India
| | - Pratibha Rai
- Environmentally Benign Synthesis Lab, Department of Chemistry; University of Allahabad; Allahabad- 211002 India
| | - Yogesh K. Pandey
- Environmentally Benign Synthesis Lab, Department of Chemistry; University of Allahabad; Allahabad- 211002 India
| | - Jaya Singh
- Department of Chemistry; LRPG College; Sahibabad, Uttar Pradesh India
| | - Jagdamba Singh
- Environmentally Benign Synthesis Lab, Department of Chemistry; University of Allahabad; Allahabad- 211002 India
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31
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Rassokhina IV, Tikhonova TA, Kobylskoy SG, Babkin IY, Shirinian VZ, Gevorgyan V, Zavarzin IV, Volkova YA. Synthesis of Imidazo[2,1-b]thiazoles via Copper-Catalyzed A3-Coupling in Batch and Continuous Flow. J Org Chem 2017; 82:9682-9692. [DOI: 10.1021/acs.joc.7b01762] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
| | | | - Sergey G. Kobylskoy
- Laboratory of High Technologies, Ltd, 86 prosp. Vernadskogo, 119571 Moscow, Russia
| | - Igor Yu. Babkin
- Laboratory of High Technologies, Ltd, 86 prosp. Vernadskogo, 119571 Moscow, Russia
| | | | - Vladimir Gevorgyan
- Department
of Chemistry, University of Illinois at Chicago, 845 West Taylor
Street, Room 4500, Chicago, Illinois 60607, United States
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32
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A Peerless Aproach: Organophotoredox/Cu(I) Catalyzed, Regioselective, Visible Light Facilitated, Click Synthesis of 1,2,3-Triazoles via Azide–Alkyne [3 + 2] Cycloaddition. Catal Letters 2017. [DOI: 10.1007/s10562-017-2156-8] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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33
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Jaiswal D, Mishra A, Rai P, Srivastava M, Tripathi BP, Yadav S, Singh J, Singh J. A visible light-initiated, one-pot, multi-component synthesis of 2-amino-4-(5-hydroxy-3-methyl-1H-pyrazol-4-yl)-4H-chromene-3-carbonitrile derivatives under solvent- and catalyst-free conditions. RESEARCH ON CHEMICAL INTERMEDIATES 2017. [DOI: 10.1007/s11164-017-3100-7] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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34
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Abbasi M. β-Cyclodextrin as an Efficient and Recyclable Supramolecular Catalyst for the Synthesis of Heterocyclic Compounds. J CHIN CHEM SOC-TAIP 2017. [DOI: 10.1002/jccs.201600887] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Mohsen Abbasi
- Young Researchers and Elite Club, Lamerd Branch; Islamic Azad University; Lamerd Fars Iran
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35
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Rai P, Mishra A, Srivastava M, Yadav S, Bhartendu Pati Tripathi, Singh J, Singh J. An Amino Sugar Promoted Green Protocol: A One-Pot, Meglumine-Catalyzed, Multicomponent Strategy for Synthesis of Multifaceted Pyrroloacridin-1(2H)-one Derivatives. ChemistrySelect 2017. [DOI: 10.1002/slct.201601718] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Pratibha Rai
- Department of Chemistry; University of Allahabad; Allahabad U.P.-211002India
| | - Anu Mishra
- Department of Chemistry; University of Allahabad; Allahabad U.P.-211002India
| | | | - Snehlata Yadav
- Department of Chemistry; University of Allahabad; Allahabad U.P.-211002India
| | | | - Jaya Singh
- Department of Chemistry; LRPG College, Sahibabad, Uttar Pradesh
| | - Jagdamba Singh
- Department of Chemistry; University of Allahabad; Allahabad U.P.-211002India
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36
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Pati Tripathi B, Mishra A, Rai P, Kumar Pandey Y, Srivastava M, Yadav S, Singh J, Singh J. A green and clean pathway: one pot, multicomponent, and visible light assisted synthesis of pyrano[2,3-c]pyrazoles under catalyst-free and solvent-free conditions. NEW J CHEM 2017. [DOI: 10.1039/c7nj01688c] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Visible light mediated, an eco-friendlier synthetic protocol for dihydropyrano[2,3-c]pyrazoles via catalyst-free and solvent-free conditions at room temperature.
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Affiliation(s)
- Bhartendu Pati Tripathi
- Environmentally Benign Synthesis Lab
- Department of Chemistry
- University of Allahabad
- Allahabad-211002
- India
| | - Anu Mishra
- Environmentally Benign Synthesis Lab
- Department of Chemistry
- University of Allahabad
- Allahabad-211002
- India
| | - Pratibha Rai
- Environmentally Benign Synthesis Lab
- Department of Chemistry
- University of Allahabad
- Allahabad-211002
- India
| | - Yogesh Kumar Pandey
- Environmentally Benign Synthesis Lab
- Department of Chemistry
- University of Allahabad
- Allahabad-211002
- India
| | | | - Snehlata Yadav
- Environmentally Benign Synthesis Lab
- Department of Chemistry
- University of Allahabad
- Allahabad-211002
- India
| | - Jaya Singh
- Department of Chemistry
- LRPG College
- Sahibabad
- India
| | - Jagdamba Singh
- Environmentally Benign Synthesis Lab
- Department of Chemistry
- University of Allahabad
- Allahabad-211002
- India
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37
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Yadav S, Srivastava M, Rai P, Tripathi BP, Mishra A, Singh J, Singh J. Oxidative organophotoredox catalysis: a regioselective synthesis of 2-nitro substituted imidazopyridines and 3-substituted indoles, initiated by visible light. NEW J CHEM 2016. [DOI: 10.1039/c6nj02365g] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Intramolecular C–N heterocyclization and C–C bond formation under visible light irradiation at room temperature was accomplished with a metal-free photoredox catalyst.
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Affiliation(s)
- Snehlata Yadav
- Environmentally Benign Synthesis Lab
- Department of Chemistry
- University of Allahabad
- Allahabad-211002
- India
| | - Madhulika Srivastava
- Environmentally Benign Synthesis Lab
- Department of Chemistry
- University of Allahabad
- Allahabad-211002
- India
| | - Pratibha Rai
- Environmentally Benign Synthesis Lab
- Department of Chemistry
- University of Allahabad
- Allahabad-211002
- India
| | - Bhartendu Pati Tripathi
- Environmentally Benign Synthesis Lab
- Department of Chemistry
- University of Allahabad
- Allahabad-211002
- India
| | - Anu Mishra
- Environmentally Benign Synthesis Lab
- Department of Chemistry
- University of Allahabad
- Allahabad-211002
- India
| | - Jaya Singh
- Department of Chemistry
- LRPG College
- Sahibabad
- India
| | - Jagdamba Singh
- Environmentally Benign Synthesis Lab
- Department of Chemistry
- University of Allahabad
- Allahabad-211002
- India
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