1
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Jin X, Nguyen BNT, Davies RP. Synthesis and characterisation of copper(I) complexes with relevance to intramolecular Ullmann O, S-arylation. Dalton Trans 2024; 53:12554-12559. [PMID: 38995223 DOI: 10.1039/d4dt01418a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/13/2024]
Abstract
Copper-catalysed intramolecular Ullman arylation has been frequently used to synthesise benzoxazoles and benzothiazoles. Despite widespread use, investigations into the mechanism and speciation of copper-containing complexes relevant to the catalytic pathway have remained relatively limited. Accordingly, this study aims to elucidate the structural details of potential copper(I) intermediates through the analysis of their solid-state structures using X-ray crystallography, while also investigating the reactivities of these complexes. Five novel copper complexes are reported which are formed prior to the aryl halide activation step and feature distinct aggregation modes based on either Cu4N4O4C4 or Cu4N4S4C4 clusters.
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Affiliation(s)
- Xiaodong Jin
- Department of Chemistry, Molecular Sciences Research Hub, Imperial College White City Campus, Wood Lane, London W12 0BZ, UK.
- Department of Chemistry, Xi'an Jiaotong-Liverpool University, Suzhou 215123, China
| | - Bao-Nguyen T Nguyen
- Department of Chemistry, Molecular Sciences Research Hub, Imperial College White City Campus, Wood Lane, London W12 0BZ, UK.
| | - Robert P Davies
- Department of Chemistry, Molecular Sciences Research Hub, Imperial College White City Campus, Wood Lane, London W12 0BZ, UK.
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2
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Wang Z, He Y, Wang F, Wang Y, Luo H, Wu J, Yang J. Green and efficient synthesis of dibenzyl cyanamides and ureas with cyanamide as a block. RSC Adv 2024; 14:23693-23698. [PMID: 39077314 PMCID: PMC11284761 DOI: 10.1039/d4ra04286g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2024] [Accepted: 07/16/2024] [Indexed: 07/31/2024] Open
Abstract
A method for the two-step synthesis of dibenzyl cyanamide and dibenzyl urea via cyanamide is presented. This approach is both efficient and environmentally friendly. Various N,N-dibenzyl ureas could be obtained by reactions of N,N-dibenzyl cyanamides and N,N-dibenzyl cyanamides as intermediates formed from cyanamide. In the absence of metal, ligand and hydrogen peroxide as the oxidant, products with moderate yields have been obtained under mild conditions. Key features include the use of widely available and easily handled cyanamide sources as starting materials.
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Affiliation(s)
- Zhongjie Wang
- State Key Laboratory of High-Efficiency Utilization of Coal and Green Chemical Engineering, School of Chemistry and Chemical Engineering, Ningxia University Yinchuan 750021 China
| | - Yu He
- State Key Laboratory of High-Efficiency Utilization of Coal and Green Chemical Engineering, School of Chemistry and Chemical Engineering, Ningxia University Yinchuan 750021 China
| | - Fang Wang
- State Key Laboratory of High-Efficiency Utilization of Coal and Green Chemical Engineering, School of Chemistry and Chemical Engineering, Ningxia University Yinchuan 750021 China
| | - Yan Wang
- State Key Laboratory of High-Efficiency Utilization of Coal and Green Chemical Engineering, School of Chemistry and Chemical Engineering, Ningxia University Yinchuan 750021 China
| | - Hui Luo
- State Key Laboratory of High-Efficiency Utilization of Coal and Green Chemical Engineering, School of Chemistry and Chemical Engineering, Ningxia University Yinchuan 750021 China
| | - Jianglong Wu
- School of Chemistry and Chemical Engineering, Ningxia Normal University Guyuan 756000 China
| | - Jinhui Yang
- State Key Laboratory of High-Efficiency Utilization of Coal and Green Chemical Engineering, School of Chemistry and Chemical Engineering, Ningxia University Yinchuan 750021 China
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3
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Wang JC, Yu ZG, Yang WT, Du JQ, Chen Z, Kan JL, Dong Y, Dong YB. Phenanthroline-Decorated Covalent Organic Framework for Catalytic Synthesis of 2-Aminobenzothiazoles in Water. Chempluschem 2024; 89:e202300494. [PMID: 37929843 DOI: 10.1002/cplu.202300494] [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: 09/04/2023] [Revised: 10/29/2023] [Accepted: 11/06/2023] [Indexed: 11/07/2023]
Abstract
2-Aminobenzothiazoles are widely used in the fields of pharmaceuticals and pesticides. Herein, we report a metal-free protocol for the preparation of 2-aminobenzothiazoles by a covalent organic framework (COF) catalyzed tandem reaction. In the presence of catalytic amount of phenanthroline-decorated COF (Phen-COF), a variety of 2-aminobenzothiazoles are obtained in excellent yields by the cross-coupling of 2-iodoanilines with isothiocyanates at room temperature in water. In addition, the COF-catalyst is very stable and can be reused at least seven times without loss of its catalytic activity.
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Affiliation(s)
- Jian-Cheng Wang
- College of Chemistry, Chemical Engineering and Materials Science, Ministry of Education, Shandong Normal University, No. 88 East Wenhua Road, Lixia District, Ji'nan, 250014, P. R. China
| | - Zhi-Gao Yu
- College of Chemistry, Chemical Engineering and Materials Science, Ministry of Education, Shandong Normal University, No. 88 East Wenhua Road, Lixia District, Ji'nan, 250014, P. R. China
| | - Wen-Ting Yang
- College of Chemistry, Chemical Engineering and Materials Science, Ministry of Education, Shandong Normal University, No. 88 East Wenhua Road, Lixia District, Ji'nan, 250014, P. R. China
| | - Jia-Qi Du
- College of Chemistry, Chemical Engineering and Materials Science, Ministry of Education, Shandong Normal University, No. 88 East Wenhua Road, Lixia District, Ji'nan, 250014, P. R. China
| | - Zhi Chen
- College of Chemistry, Chemical Engineering and Materials Science, Ministry of Education, Shandong Normal University, No. 88 East Wenhua Road, Lixia District, Ji'nan, 250014, P. R. China
| | - Jing-Lan Kan
- College of Chemistry, Chemical Engineering and Materials Science, Ministry of Education, Shandong Normal University, No. 88 East Wenhua Road, Lixia District, Ji'nan, 250014, P. R. China
| | - Ying Dong
- College of Chemistry, Chemical Engineering and Materials Science, Ministry of Education, Shandong Normal University, No. 88 East Wenhua Road, Lixia District, Ji'nan, 250014, P. R. China
| | - Yu-Bin Dong
- College of Chemistry, Chemical Engineering and Materials Science, Ministry of Education, Shandong Normal University, No. 88 East Wenhua Road, Lixia District, Ji'nan, 250014, P. R. China
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4
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Jaiswal MK, Gupta A, Ansari FJ, Pandey VK, Tiwari VK. Recent Progress on Synthesis of Functionalized 1,5-Disubstituted Triazoles. Curr Org Synth 2024; 21:513-558. [PMID: 38804327 DOI: 10.2174/1570179420666230418123350] [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: 08/28/2022] [Revised: 12/13/2022] [Accepted: 01/12/2023] [Indexed: 05/29/2024]
Abstract
Immediately after the invention of 'Click Chemistry' in 2002, the regioselective 1,2,3- triazole scaffolds resulted from respective organic azides and terminal alkynes under Cu(I) catalysis have been well recognized as the functional heterocyclic core at the centre of modern organic chemistry, medicinal chemistry, and material sciences. This CuAAC reaction has several notable features including excellent regioselectivity, high-to-excellent yields, easy to execute, short reaction time, modular in nature, mild condition, readily available starting materials, etc. Moreover, the resulting regioselective triazoles can serve as amide bond isosteres, a privileged functional group in drug discovery and development. More than hundreds of reviews had been devoted to the 'Click Chemistry' in special reference to 1,4-disubstituted triazoles, while only little efforts were made for an opposite regioisomer i.e., 1,5-disubstituted triazole. Herein, we have presented various classical approaches for an expeditious synthesis of a wide range of biologically relevant 1,5- disubstituted 1,2,3-triazole analogues. The syntheses of such a class of diversly functionalized triazoles have emerged as a crucial investigation in the domain of chemistry and biology. This tutorial review covers the literature assessment on the development of various synthetic protocols for the functionalized 1,5-disubstituted triazoles reported during the last 12 years.
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Affiliation(s)
- Manoj K Jaiswal
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
| | - Abhishek Gupta
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
| | - Faisal J Ansari
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
| | - Vinay K Pandey
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
| | - Vinod K Tiwari
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
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5
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Jaiswal MK, Tiwari VK. Growing Impact of Intramolecular Click Chemistry in Organic Synthesis. CHEM REC 2023; 23:e202300167. [PMID: 37522634 DOI: 10.1002/tcr.202300167] [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: 05/06/2023] [Revised: 07/11/2023] [Indexed: 08/01/2023]
Abstract
Click Chemistry, a modular, rapid, and one of the most reliable tool for the regioselective 1,2,3-triazole forming [3+2] reaction of organic azide and terimal alkyne is widely explored in various emerging domains of research ranging from chemical biology to catalysis and medicinal chemistry to material science. This regioselective reaction from a diverse range of azido-alkyne scaffolds has been well performed in both intermolecular as well as intramolecular fashions. In comparison to the intermolecular metal (Cu/Ru/Ni) variant of 'Click Chemistry', the intramolecular click tool is little addressed. The intramolecular click chemistry is exemplified as a mordern tool of cyclization which involves metal-catalyzed (CuAAC/RuAAC) cyclization, organo-catalyzed cyclization, and thermal-induced topochemical reaction. Thus, we report herein the recent approaches on intramolecular azide-alkyne cycloaddition 'Click Chemistry' with their wide-spread emerging applications in the developement of a diverse range of molecules including fused-heterocycles, well-defined peptidomemics, and macrocyclic architectures of various notable features.
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Affiliation(s)
- Manoj K Jaiswal
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
| | - Vinod K Tiwari
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
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6
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Singh SK, Kumar S, Yadav MS, Gupta A, Tiwari VK. Triazole-Appended Glycohybrid/CuI-Catalyzed C-C Cross-Coupling of Aryl/Heteroaryl Halides with Alkynyl Sugars. J Org Chem 2023; 88:13440-13453. [PMID: 37747895 DOI: 10.1021/acs.joc.3c00712] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/27/2023]
Abstract
This report describes a convenient method for the Cu(I)-catalyzed Sonogashira cross-coupling reaction of aryl/heteroaryl halides and alkynyl sugars in the presence of a 1,2,3-triazole-appended glycohybrid as a biocompatible ligand. The Sonogashira cross-coupling products were exclusively formed without the Glaser-Hay homocoupling reaction in the presence of a glycosyl monotriazolyl ligand at 120 °C. However, the Glaser-Hay homocoupling products were obtained at 60-70 °C in the presence of bis-triazolyl-based macrocyclic glycohybrid ligand L8. The glycosyl triazole ligands were synthesized via the CuI/DIPEA-mediated regioselective CuAAC click reaction, and a series of glycohybrids of glucose, mannose, and galactose alkynes including glycosyl rods were developed in good yields. The developed glycohybrids have been well characterized by various spectroscopic techniques, such as nuclear magnetic resonance, high-resolution mass spectrometry, and single-crystal X-ray data of L3. The protocol works well with the heteroaryl and naphthyl halides, and the mechanistic approach leads to CuI/ligand-assisted oxidative coupling. The coupling protocol has notable features, including low catalytic loading, cost-effectiveness, biocompatible nature, and a wide substrate scope.
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Affiliation(s)
- Sumit K Singh
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi, U.P. 221005, India
| | - Sunil Kumar
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi, U.P. 221005, India
| | - Mangal S Yadav
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi, U.P. 221005, India
| | - Abhishek Gupta
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi, U.P. 221005, India
| | - Vinod K Tiwari
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi, U.P. 221005, India
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7
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Jaiswal MK, Gupta A, Yadav MS, Pandey VK, Tiwari VK. Organocatalyzed Regioselective Synthesis of 1,5-Disubstituted 1,2,3-Triazolyl Glycoconjugates. Chemistry 2023; 29:e202301749. [PMID: 37432103 DOI: 10.1002/chem.202301749] [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: 06/01/2023] [Revised: 07/01/2023] [Accepted: 07/11/2023] [Indexed: 07/12/2023]
Abstract
A novel organocatalyzed [3+2] cycloaddition reaction of nitroolefins with glycosyl azides as well as organic azides has been developed for successful construction of 1,5-disubstituted triazolyl glycoconjugates. This metal-free and acid-free, regioselective synthetic protocol proceeds in the presence of only Schreiner thiourea organocatalysts, which enable the required activation of nitroolefins through double hydrogen bonding. The straightforward, operationally simple, and regioselectivity of this methodology, complementing to the classical RuAAC catalyzed synthesis of 1,5-disubstituted 1,2,3-triazoles. In the presence of catalytic amount of Schreiner thiourea organocatalyst, organic azides react with a broad array of nitroolefins producing a series of diverse 1,5-disubstituted 1,2,3- triazoles in good yields with excellent regioselectivity.
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Affiliation(s)
- Manoj K Jaiswal
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
| | - Abhishek Gupta
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
| | - Mangal S Yadav
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
| | - Vinay K Pandey
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
| | - Vinod K Tiwari
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
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8
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Wu J, Wang Z, Wang C, Wang Y, Li H, Luo H, Li H, Wang F, Li D, Yang J. Research Progress on the Synthesis of Nitrogen-Containing Compounds with Cyanamide as a Building Block. CHINESE J ORG CHEM 2023. [DOI: 10.6023/cjoc202208020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/02/2023]
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9
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Györke G, Dancsó A, Volk B, Hunyadi D, Szalóki I, Bulátkó A, Milen M. Preparation of benzoxazoles and benzothiazoles utilizing naturally occurring copper-containing mineral catalyst precursors. Tetrahedron Lett 2022. [DOI: 10.1016/j.tetlet.2022.154319] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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10
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Singer RA, Monfette S, Bernhardson D, Tcyrulnikov S, Hubbell AK, Hansen EC. Recent Advances in Nonprecious Metal Catalysis. Org Process Res Dev 2022. [DOI: 10.1021/acs.oprd.2c00310] [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]
Affiliation(s)
- Robert A. Singer
- Pfizer Chemical Research and Development, Pfizer Inc., Groton, Connecticut 06340, United States
| | - Sebastien Monfette
- Pfizer Chemical Research and Development, Pfizer Inc., Groton, Connecticut 06340, United States
| | - David Bernhardson
- Pfizer Chemical Research and Development, Pfizer Inc., Groton, Connecticut 06340, United States
| | - Sergei Tcyrulnikov
- Pfizer Chemical Research and Development, Pfizer Inc., Groton, Connecticut 06340, United States
| | - Aran K. Hubbell
- Pfizer Chemical Research and Development, Pfizer Inc., Groton, Connecticut 06340, United States
| | - Eric C. Hansen
- Pfizer Chemical Research and Development, Pfizer Inc., Groton, Connecticut 06340, United States
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11
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Singh SK, Kumar S, Yadav MS, Tiwari VK. Pyridyl Glycosyl Triazole/CuI-Mediated Domino/Tandem Synthesis of Quinazolinones. J Org Chem 2022; 87:15389-15402. [PMID: 36305798 DOI: 10.1021/acs.joc.2c01951] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
The glycosyl 1,2,3-triazoles are expediently accessible from readily available sugar-derived glycosyl azide by utilizing modular CuAAC "Click Chemistry", and the resulting glycohybrid skeleton possesses efficient metal-coordinating centers that support a wide range of metal-mediated efficient catalysis in various imperative organic transformations. Here, we designed and developed pyridyl glycosyl triazoles by employing the CuAAC reaction of d-glucose-derived glycosyl azides and alkynyl pyridines. These pyridyl glycosyl triazoles with Cu(I) salt were explored as an efficient catalyst to successfully assemble 2-amino-3-substituted and 3-substituted quinazolinones by the domino/tandem cross-coupling reaction of various N-substituted o-halobenzamides with cyanamide and formamide, respectively. The devised protocol has some notable features, including biocompatibility, low cost, easily accessible starting materials for the glycosyl ligands, high yield, broad spectrum, low catalytic loading, and mild reaction conditions.
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Affiliation(s)
- Sumit K Singh
- Department of Chemistry, Centre of Advanced Study, Institute of Science, Banaras Hindu University, Varanasi, U.P. 221005, India
| | - Sunil Kumar
- Department of Chemistry, Centre of Advanced Study, Institute of Science, Banaras Hindu University, Varanasi, U.P. 221005, India
| | - Mangal S Yadav
- Department of Chemistry, Centre of Advanced Study, Institute of Science, Banaras Hindu University, Varanasi, U.P. 221005, India
| | - Vinod K Tiwari
- Department of Chemistry, Centre of Advanced Study, Institute of Science, Banaras Hindu University, Varanasi, U.P. 221005, India
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12
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Patra I, Kadhim MM, Kzar HH, Mustafa YF, Jameel HA. Fe 3O 4@SiO 2-(Imine-Thiazole)-Cu(OAc) 2 nanocomposite catalyzed one-pot three-component synthesis of 2-Substituted benzothiazoles using S 8 as sulfur source. J Sulphur Chem 2022. [DOI: 10.1080/17415993.2022.2137413] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Indrajit Patra
- Independent Researcher, Ex Research Scholar at NIT Durgapur, West Bengal, India
| | - Mustafa M. Kadhim
- Independent Researcher, Ex Research Scholar at NIT Durgapur, West Bengal, India
- Medical Laboratory Techniques Department, Al-Farahidi University, Baghdad, Iraq
| | - Hamzah H. Kzar
- Independent Researcher, Ex Research Scholar at NIT Durgapur, West Bengal, India
- Veterinary Medicine College, Al-Qasim green University, Al-Qasim, Iraq
| | - Yasser Fakri Mustafa
- Independent Researcher, Ex Research Scholar at NIT Durgapur, West Bengal, India
- Department of Pharmaceutical Chemistry, College of Pharmacy, University of Mosul, Mosul, Iraq
| | - Huda Ahmed Jameel
- Independent Researcher, Ex Research Scholar at NIT Durgapur, West Bengal, India
- Al-Mustaqbal University College, Hilla, Iraq
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13
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Yadav MS, Jaiswal MK, Kumar S, Singh SK, Ansari FJ, Tiwari VK. One-pot expeditious synthesis of glycosylated esters through activation of carboxylic acids using trichloroacetonitrile. Carbohydr Res 2022; 521:108674. [PMID: 36126412 DOI: 10.1016/j.carres.2022.108674] [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: 07/16/2022] [Revised: 09/05/2022] [Accepted: 09/05/2022] [Indexed: 11/26/2022]
Abstract
Acetimidates, a valuable intermediate has been well explored as versatile synthon in a number of organic transformations particularly as suitable donors in glycosylation reactions. Herein, we explored acetimidates to furnish high-to-excellent yield of diverse glycosylated esters under one-pot mild reaction condition. The commercially available trichloroacetonitrile is implemented for the activation of carboxylic acid via in situ generation of trichloroacetimidate, which was subsequently attacked by sugar alcohols to deliver high-to-excellent yields of desired glycosylated esters. The devised method has some notable features such as metal-free condition, one-pot mild reaction condition, easy-handling, high-to-excellent yields, and broad substrate scope.
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Affiliation(s)
- Mangal S Yadav
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
| | - Manoj K Jaiswal
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
| | - Sunil Kumar
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
| | - Sumit K Singh
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
| | - Faisal J Ansari
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
| | - Vinod K Tiwari
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi, 221005, India.
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14
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Agrahari AK, Kumar S, Pandey MD, Rajkhowa S, Jaiswal MK, Tiwari VK. Click Chemistry ‐ Inspired Synthesis of Porphyrin Hybrid Glycodendrimers as Fluorescent Sensor for Cu(II) Ions. ChemistrySelect 2022. [DOI: 10.1002/slct.202202273] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Anand K. Agrahari
- Department of Chemistry Institute of Science Banaras Hindu University Varanasi UP-221005 INDIA
- Department of Chemistry University of California-Davis Davis CA 95616 U.S.A
| | - Sunil Kumar
- Department of Chemistry Institute of Science Banaras Hindu University Varanasi UP-221005 INDIA
| | - Mrituanjay D. Pandey
- Department of Chemistry Institute of Science Banaras Hindu University Varanasi UP-221005 INDIA
| | - Sanchayita Rajkhowa
- Department of Chemistry The Assam Royal Global University Guwahati Assam 781035 INDIA
| | - Manoj K. Jaiswal
- Department of Chemistry Institute of Science Banaras Hindu University Varanasi UP-221005 INDIA
| | - Vinod K. Tiwari
- Department of Chemistry Institute of Science Banaras Hindu University Varanasi UP-221005 INDIA
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15
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Singh SK, Mishra N, Kumar S, Jaiswal MK, Tiwari VK. Growing Impact of Carbohydrate‐Based Organocatalysts. ChemistrySelect 2022. [DOI: 10.1002/slct.202201314] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Sumit K. Singh
- Department of Chemistry Institute of Science Banaras Hindu University Varanasi 221005 INDIA
| | - Nidhi Mishra
- Department of Chemistry Institute of Science Banaras Hindu University Varanasi 221005 INDIA
| | - Sunil Kumar
- Department of Chemistry Institute of Science Banaras Hindu University Varanasi 221005 INDIA
| | - Manoj K. Jaiswal
- Department of Chemistry Institute of Science Banaras Hindu University Varanasi 221005 INDIA
| | - Vinod K. Tiwari
- Department of Chemistry Institute of Science Banaras Hindu University Varanasi 221005 INDIA
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16
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Seki M. Development of Novel and Efficient Catalytic Systems for C-H Activation and Application to Practical Synthesis of Pharmaceuticals. J SYN ORG CHEM JPN 2022. [DOI: 10.5059/yukigoseikyokaishi.80.357] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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17
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Jiang Y, Tang Y, Gao H, Rao G, Mao Z. Copper(II)-catalyzed synthesis of benzoxazoles from inactive 2-chloroanilides. Curr Org Synth 2022; 19:819-823. [DOI: 10.2174/1570179419666220225115017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Revised: 12/23/2021] [Accepted: 12/31/2021] [Indexed: 11/22/2022]
Abstract
Aim and Objective:
Benzoxazoles are of great importance in natural products, pharmaceutical agents as well as synthetic intermediates. Although many works reported on construction of benzoxazoles by Cu-catalyzed intramolecular O-arylation of ortho-haloanilides have been improved, there are very few reports about transition metal-catalyzed synthesis of benzoxazoles from inactive 2-chloroanilides so far. This work is to explore a green and cheap protocol for intramolecular O-arylation of inactive 2-chloroanilides to prepare 2-arylbenzoxazoles.
Materials and Methods:
We have found Cu(acac)2/1,10-Phen complex was beneficial to intramolecular O-arylation of 2-chloroanilides using K2CO3 as base in EtOH at 90 oC to prepare benzoxazoles.
Results:
An efficient and green method was developed for Cu(II)-catalyzed intramolecular O-arylation of inactive 2-chloroanilides.
Conclusion:
In this way, many 2-arylbenzoxazoles were prepared in good yields.
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Affiliation(s)
- Yuan Jiang
- School of Chinese Materia Medica, Yunnan University of Chinese Medicine, Kunming 650500, P. R. China
| | - Yanling Tang
- School of Chinese Materia Medica, Yunnan University of Chinese Medicine, Kunming 650500, P. R. China
| | - Hui Gao
- School of Chinese Materia Medica, Yunnan University of Chinese Medicine, Kunming 650500, P. R. China
| | - Gaoxiong Rao
- School of Chinese Materia Medica, Yunnan University of Chinese Medicine, Kunming 650500, P. R. China
| | - Zewei Mao
- School of Chinese Materia Medica, Yunnan University of Chinese Medicine, Kunming 650500, P. R. China
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18
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A Palladium Complex Dispersed in Ionic Liquid as an Efficient Catalytic Combination for the Synthesis of Benzazoles. Top Catal 2022. [DOI: 10.1007/s11244-021-01554-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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19
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Vangrunderbeeck S, Balcaen T, Veryser C, Steurs G, De Borggraeve WM. Carbonylation Chemistry Applied to the Synthesis of Benzimidazo[2,1‐
b
]quinazolin‐12‐ones. European J Org Chem 2022. [DOI: 10.1002/ejoc.202101136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Sarah Vangrunderbeeck
- Molecular Design and Synthesis Department of Chemistry KU Leuven Celestijnenlaan 200F, Box 2404 3001 Leuven Belgium
| | - Tim Balcaen
- Molecular Design and Synthesis Department of Chemistry KU Leuven Celestijnenlaan 200F, Box 2404 3001 Leuven Belgium
| | - Cedrick Veryser
- Molecular Design and Synthesis Department of Chemistry KU Leuven Celestijnenlaan 200F, Box 2404 3001 Leuven Belgium
| | - Gert Steurs
- Molecular Design and Synthesis Department of Chemistry KU Leuven Celestijnenlaan 200F, Box 2404 3001 Leuven Belgium
| | - Wim M. De Borggraeve
- Molecular Design and Synthesis Department of Chemistry KU Leuven Celestijnenlaan 200F, Box 2404 3001 Leuven Belgium
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20
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Yang X, Guo X, Yuan X, Chen B. K 2S 2O 8-promoted rearrangement of nitrones for the synthesis of benzo[ d]oxazoles. Org Chem Front 2022. [DOI: 10.1039/d2qo00680d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
An efficient route for the synthesis of valuable benzoxazoles has been developed through self-oxidative cyclization with N–O bond cleavage.
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Affiliation(s)
- Xueying Yang
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, Department of Chemistry, Lanzhou University, Lanzhou, Gansu, China
| | - Xin Guo
- School of Chemistry and Chemical Engineering, North Minzu University, Yinchuan, China
| | - Xinglong Yuan
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, Department of Chemistry, Lanzhou University, Lanzhou, Gansu, China
| | - Baohua Chen
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, Department of Chemistry, Lanzhou University, Lanzhou, Gansu, China
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21
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Kumar K, Agrahari AK, Pratap R, Tiwari VK, Bhattacharya S. Synthesis and structural features of a series of Cu( i) furan-2-thiocarboxylate complexes: efficient “click” catalysts for the synthesis of glycoconjugates and glycocluster. NEW J CHEM 2022. [DOI: 10.1039/d2nj03433f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of phosphinecopper(i) thiocarboxylates have been synthesized and characterized structurally. These complexes act as efficient catalysts for the 'click' azide–alkyne cycloaddition leading to glycoconjugates and a glycocluster.
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Affiliation(s)
- Krishna Kumar
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi-221005, India
| | - Anand K. Agrahari
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi-221005, India
| | - Rajesh Pratap
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi-221005, India
| | - Vinod K. Tiwari
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi-221005, India
| | - Subrato Bhattacharya
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi-221005, India
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22
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Badhani G, Joshi A, Adimurthy S. Ionic‐Liquid‐Catalyzed Synthesis of Imines, Benzimidazoles, Benzothiazoles, Quinoxalines and Quinolines through C−N, C−S, and C−C Bond Formation. European J Org Chem 2021. [DOI: 10.1002/ejoc.202101135] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Gaurav Badhani
- Academy of Scientific & Innovative Research, Ghaziabad CSIR-Central Salt & Marine Chemicals Research Institute G. B. Marg Bhavnagar 364 002 Gujarat India
| | - Abhisek Joshi
- Academy of Scientific & Innovative Research, Ghaziabad CSIR-Central Salt & Marine Chemicals Research Institute G. B. Marg Bhavnagar 364 002 Gujarat India
| | - Subbarayappa Adimurthy
- Academy of Scientific & Innovative Research, Ghaziabad CSIR-Central Salt & Marine Chemicals Research Institute G. B. Marg Bhavnagar 364 002 Gujarat India
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23
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Mishra N, Singh SK, Singh AS, Agrahari AK, Tiwari VK. Glycosyl Triazole Ligand for Temperature-Dependent Competitive Reactions of Cu-Catalyzed Sonogashira Coupling and Glaser Coupling. J Org Chem 2021; 86:17884-17895. [PMID: 34875833 DOI: 10.1021/acs.joc.1c02194] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Glycosyl triazoles have been introduced as efficient ligands for the Cu-catalyzed Sonogashira reaction to overcome the challenges of sideways homocoupling reactions in Cu catalysis in this reaction. The atmospheric oxygen in a sealed tube did not affect the coupling, and no need of complete exclusion of oxygen was experienced in the presence of glycohybrid triazole ligand L3. High product yields were obtained at 130 °C for a variety of substrates including aliphatic and aromatic terminal alkynes and differently substituted aromatic halides including 9-bromo noscapine. In contrast, at room temperature, a very low loading of the L3-Cu catalytic system could produce excellent yields in Glaser coupling including homocoupling and heterocoupling of a variety of aliphatic and aromatic alkynes.
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Affiliation(s)
- Nidhi Mishra
- Department of Chemistry, Centre of Advanced Study, Institute of Science, Banaras Hindu University, Varanasi 221005, India
| | - Sumit K Singh
- Department of Chemistry, Centre of Advanced Study, Institute of Science, Banaras Hindu University, Varanasi 221005, India
| | - Anoop S Singh
- Department of Chemistry, Centre of Advanced Study, Institute of Science, Banaras Hindu University, Varanasi 221005, India
| | - Anand K Agrahari
- Department of Chemistry, Centre of Advanced Study, Institute of Science, Banaras Hindu University, Varanasi 221005, India
| | - Vinod K Tiwari
- Department of Chemistry, Centre of Advanced Study, Institute of Science, Banaras Hindu University, Varanasi 221005, India
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24
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Zhang J, Hu L, Liu Y, Zhang Y, Chen X, Luo Y, Peng Y, Han S, Pan B. Elemental Sulfur-Promoted Benzoxazole/Benzothiazole Formation Using a C═C Double Bond as a One-Carbon Donator. J Org Chem 2021; 86:14485-14492. [PMID: 34661400 DOI: 10.1021/acs.joc.1c01357] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
An efficient method to assemble diverse benzoxazoles/benzothiazoles in good yields was developed via oxidative cyclization with 2-aminothiophenols or 2-iodoanilines as raw materials. In this protocol, elemental sulfur was used as the effective oxidant and C atoms on the C═C double bond were introduced as a one-carbon donator.
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Affiliation(s)
- Jun Zhang
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Liang Hu
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Yafei Liu
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Yurong Zhang
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Xuecheng Chen
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Yue Luo
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Yalan Peng
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Shiqing Han
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211816, China.,Key Laboratory of Synthetic Chemistry of Natural Substances, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Bin Pan
- Shandong Peninsula Engineering Research Center of Comprehensive Brine Utilization, Weifang University of Science and Technology, Shouguang 262799, China
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25
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Nguyen HT, Nguyen TH, Pham DD, Nguyen CT, Tran PH. A green approach for the synthesis of 2-substituted benzoxazoles and benzothiazoles via coupling/cyclization reactions. Heliyon 2021; 7:e08309. [PMID: 34820534 PMCID: PMC8601991 DOI: 10.1016/j.heliyon.2021.e08309] [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: 08/17/2021] [Revised: 10/10/2021] [Accepted: 10/29/2021] [Indexed: 11/20/2022] Open
Abstract
We have developed the green method for the synthesis of benzoxazoles and benzothiazoles with moderate to good yields using imidazolium chlorozincate (II) ionic liquid supported into Fe3O4 nanoparticles (LAIL@MNP) under solvent-free sonication. The reaction was performed under mild conditions and only produced water as a sole byproduct. The reactions under solvent-free sonication showed advantages of faster reaction rate (30 min) and high yields of the products (up to 90%). Moreover, the LAIL@MNP material was easily separated from the reaction mixture and can be recycled for five consecutive runs with a slight decrease in its catalytic performance (from 82 to 73%).
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Affiliation(s)
- Hai Truong Nguyen
- Department of Organic Chemistry, Faculty of Chemistry, University of Science, Ho Chi Minh City, Viet Nam
- Vietnam National University, Ho Chi Minh City, Viet Nam
| | - Trinh Hao Nguyen
- Department of Organic Chemistry, Faculty of Chemistry, University of Science, Ho Chi Minh City, Viet Nam
- Vietnam National University, Ho Chi Minh City, Viet Nam
| | - Dung Duc Pham
- Faculty of Chemistry, Ho Chi Minh City University of Education, Viet Nam
| | - Cong Tien Nguyen
- Faculty of Chemistry, Ho Chi Minh City University of Education, Viet Nam
| | - Phuong Hoang Tran
- Department of Organic Chemistry, Faculty of Chemistry, University of Science, Ho Chi Minh City, Viet Nam
- Vietnam National University, Ho Chi Minh City, Viet Nam
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26
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Agrahari AK, Jaiswal MK, Yadav MS, Tiwari VK. CuAAC mediated synthesis of cyclen cored glycodendrimers of high sugar tethers at low generation. Carbohydr Res 2021; 508:108403. [PMID: 34329845 DOI: 10.1016/j.carres.2021.108403] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Revised: 07/12/2021] [Accepted: 07/19/2021] [Indexed: 02/08/2023]
Abstract
Glycodendrimers are receiving considerable attention to mimic a number of imperative features of cell surface glycoconjugate and acquired excellent relevance to a wide domain of investigations including medicine, pharmaceutics, catalysis, nanotechnology, carbohydrate-protein interaction, and moreover in drug delivery systems. Toward this end, an expeditious, modular, and regioselective triazole-forming CuAAC click approach along with double stage convergent synthetic method was chosen to develop a variety of novel chlorine-containing cyclen cored glycodendrimers of high sugar tethers at low generation of promising therapeutic potential. We developed a novel chlorine-containing hypercore unit with 12 alkynyl functionality originated from cyclen scaffold which was confirmed by its single crystal X-ray data analysis. Further, the modular CuAAC technique was utilized to produce a variety of novel 12-sugar coated (G0) glycodendrimers 12-15 adorn with β-Glc-, β-Man-, β-Gal-, β-Lac, along with 36-galactose coated (G1) glycodendrimer 18 in good-to-high yield. The structures of the developed glycodendrimer architectures have been well elucidated by extensive spectral analysis including NMR (1H & 13CNMR), HRMS, MALDI-TOF MS, UV-Vis, IR, and SEC (Size Exclusion Chromatogram) data.
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Affiliation(s)
- Anand K Agrahari
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
| | - Manoj K Jaiswal
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
| | - Mangal S Yadav
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
| | - Vinod K Tiwari
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi, 221005, India.
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27
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Qiao X, Zhao YD, Rao M, Bu ZW, Zhang G, Xiong HY. Delivering 2-Aryl Benzoxazoles through Metal-Free and Redox-Neutral De-CF 3 Process. J Org Chem 2021; 86:13548-13558. [PMID: 34529441 DOI: 10.1021/acs.joc.1c01619] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
An unexpected cleavage of the Csp3-CF3 bond of CF3-hydrobenzoxazoles has been disclosed, affording a range of 2-aryl benzoxazoles under metal-free and redox-neutral conditions. This transformation has demonstrated broad substrate scope and good compatibility of functional groups. 2-Aryl benzothiazole and 2-aryl benzoimidazole could be smoothly assembled in the same manner. On the basis of preliminary mechanistic studies, base initiated and aromatization driven β-carbon elimination was considered to be the key step for the formation of 2. This reaction offers an alternative, facile, and sustainable route to access important 2-aryl benzoxazole motifs.
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Affiliation(s)
- Xinxin Qiao
- Institute of Organic Functional Molecules, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, PR China
| | - Yong-De Zhao
- Institute of Chemistry, Henan Academy of Sciences, Zhengzhou 450002, PR China
| | - Mingru Rao
- Institute of Organic Functional Molecules, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, PR China
| | - Zhan-Wei Bu
- Institute of Organic Functional Molecules, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, PR China
| | - Guangwu Zhang
- Institute of Organic Functional Molecules, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, PR China
| | - Heng-Ying Xiong
- Institute of Organic Functional Molecules, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, PR China
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28
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Singh S, Yadav MS, Singh AS, Agrahari AK, Mishra N, Kumar S, Tiwari VK. d-Glucosamine as the Green Ligand for Cu(I)-Catalyzed Regio- and Stereoselective Domino Synthesis of ( Z)-3-Methyleneisoindoline-1-ones and ( E)- N-Aryl-4 H-thiochromen-4-imines. ACS OMEGA 2021; 6:21125-21138. [PMID: 34423220 PMCID: PMC8375096 DOI: 10.1021/acsomega.1c03003] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Accepted: 07/14/2021] [Indexed: 06/13/2023]
Abstract
d-Glucosamine, a natural, inexpensive, and conveniently accessible sugar, has been explored as an efficient ligand for the Cu(I)-catalyzed regio- and stereoselective synthesis of an array of (Z)-3-methyleneisoindoline-1-ones and (E)-N-aryl-4H-thiochromen-4-imines in good-to-excellent yield in a tandem fashion via the reaction of 2-halobenzamide and 2-halobenzothioamide with terminal alkynes, respectively. The water solubility and biocompatible nature of the ligand offer easy separation of the catalytic system toward the aqueous phase as well as change in the reaction path in terms of the product also demonstrated the variation of the reaction temperature. The domino reaction proceeds by the Sonogashira and Ullmann type cross-coupling reaction, followed by Cu(I)-promoted additive cyclization of heteroatom to the triple bond. In addition, d-glucosamine causes successful Glaser-Hay coupling of terminal alkynes under Cu catalysis to produce a high yield of respective 1,3-diynes.
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29
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Agrahari AK, Bose P, Jaiswal MK, Rajkhowa S, Singh AS, Hotha S, Mishra N, Tiwari VK. Cu(I)-Catalyzed Click Chemistry in Glycoscience and Their Diverse Applications. Chem Rev 2021; 121:7638-7956. [PMID: 34165284 DOI: 10.1021/acs.chemrev.0c00920] [Citation(s) in RCA: 162] [Impact Index Per Article: 54.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Copper(I)-catalyzed 1,3-dipolar cycloaddition between organic azides and terminal alkynes, commonly known as CuAAC or click chemistry, has been identified as one of the most successful, versatile, reliable, and modular strategies for the rapid and regioselective construction of 1,4-disubstituted 1,2,3-triazoles as diversely functionalized molecules. Carbohydrates, an integral part of living cells, have several fascinating features, including their structural diversity, biocompatibility, bioavailability, hydrophilicity, and superior ADME properties with minimal toxicity, which support increased demand to explore them as versatile scaffolds for easy access to diverse glycohybrids and well-defined glycoconjugates for complete chemical, biochemical, and pharmacological investigations. This review highlights the successful development of CuAAC or click chemistry in emerging areas of glycoscience, including the synthesis of triazole appended carbohydrate-containing molecular architectures (mainly glycohybrids, glycoconjugates, glycopolymers, glycopeptides, glycoproteins, glycolipids, glycoclusters, and glycodendrimers through regioselective triazole forming modular and bio-orthogonal coupling protocols). It discusses the widespread applications of these glycoproducts as enzyme inhibitors in drug discovery and development, sensing, gelation, chelation, glycosylation, and catalysis. This review also covers the impact of click chemistry and provides future perspectives on its role in various emerging disciplines of science and technology.
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Affiliation(s)
- Anand K Agrahari
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi, Uttar Pradesh 221005, India
| | - Priyanka Bose
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi, Uttar Pradesh 221005, India
| | - Manoj K Jaiswal
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi, Uttar Pradesh 221005, India
| | - Sanchayita Rajkhowa
- Department of Chemistry, Jorhat Institute of Science and Technology (JIST), Jorhat, Assam 785010, India
| | - Anoop S Singh
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi, Uttar Pradesh 221005, India
| | - Srinivas Hotha
- Department of Chemistry, Indian Institute of Science and Engineering Research (IISER), Pune, Maharashtra 411021, India
| | - Nidhi Mishra
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi, Uttar Pradesh 221005, India
| | - Vinod K Tiwari
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi, Uttar Pradesh 221005, India
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30
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Synthesis of benzothiazoles using fluorescein as an efficient photocatalyst under visible light. MOLECULAR CATALYSIS 2021. [DOI: 10.1016/j.mcat.2021.111693] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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31
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Tiwari VK. Development of Diverse Range of Biologically Relevant Carbohydrate-Containing Molecules: Twenty Years of Our Journey*. CHEM REC 2021; 21:3029-3048. [PMID: 34047444 DOI: 10.1002/tcr.202100058] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Revised: 04/02/2021] [Indexed: 11/12/2022]
Abstract
There is an increasing demand for significant amount of carbohydrate-containing molecules owing to their complete chemical, biological, and pharmacological investigations to better understand their role in many important biological events. Clinical studies of a wide range of simple carbohydrates or their derivatives, glycohybrids, glycoconjugates, and neoglycoconjugates have been conducted worldwide for the successful treatment of various frontline diseases. Herein, a brief perspective of carbohydrate-based molecular scaffolding and my experience during the last 20 years in the area of synthetic carbohydrate chemistry, mainly for their impact in drug discovery & development, is presented.
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Affiliation(s)
- Vinod K Tiwari
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi, U.P.-221005, India
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32
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Fu Q, Zhang R, Qiu H, Ma R, Ma Y. A New Method for the Synthesis of 2-Arylbenzothiazoles Oxidized by Selectfluor. CHINESE J ORG CHEM 2021. [DOI: 10.6023/cjoc202105010] [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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33
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Ma R, Ding Y, Chen R, Wang Z, Wang L, Ma Y. Oxidant/Solvent-Controlled I 2-Catalyzed Domino Annulation for Selective Synthesis of 2-Aroylbenzothiazoles and 2-Arylbenzothiazoles under Metal-Free Conditions. J Org Chem 2020; 86:310-321. [PMID: 33332126 DOI: 10.1021/acs.joc.0c02095] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
A simple and practical domino protocol for the selective synthesis of 2-aroylbenzothiazoles and 2-aryl benzothiazoles catalyzed by I2 is developed under metal-free conditions. The reaction outcomes are exclusively controlled by the reaction oxidant/medium. With DMSO employed as both the solvent and the oxidant, an oxidation of aromatic methyl ketones takes precedence over the condensation with 2-aminobenzenethiols. On the other hand, when the reaction was carried out in PhNO2 or in 1,4-dioxane containing PhNO2, the condensation of aromatic methyl ketones with 2-aminobenzenethiols has priority to form imines which is followed by an oxidation of the methyl group from ketones to afford 2-arylbenzothiazoles as a sole product. The PhNO2/I2 co-catalytic system is proposed first time.
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Affiliation(s)
- Renchao Ma
- Institute of Advanced Studies and School of Pharmaceutical and Chemical Engineering, Taizhou University, Taizhou 318000, P R China
| | - Yuxin Ding
- Institute of Advanced Studies and School of Pharmaceutical and Chemical Engineering, Taizhou University, Taizhou 318000, P R China
| | - Rener Chen
- Institute of Advanced Studies and School of Pharmaceutical and Chemical Engineering, Taizhou University, Taizhou 318000, P R China
| | - Zhiming Wang
- Institute of Advanced Studies and School of Pharmaceutical and Chemical Engineering, Taizhou University, Taizhou 318000, P R China
| | - Lei Wang
- Institute of Advanced Studies and School of Pharmaceutical and Chemical Engineering, Taizhou University, Taizhou 318000, P R China
| | - Yongmin Ma
- Institute of Advanced Studies and School of Pharmaceutical and Chemical Engineering, Taizhou University, Taizhou 318000, P R China
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34
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Sethiya A, Sahiba N, Teli P, Soni J, Agarwal S. Current advances in the synthetic strategies of 2-arylbenzothiazole. Mol Divers 2020; 26:513-553. [PMID: 33180241 DOI: 10.1007/s11030-020-10149-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2020] [Accepted: 10/12/2020] [Indexed: 02/06/2023]
Abstract
Benzothiazole is a privileged scaffold in the field of synthetic and medicinal chemistry. Its derivatives and metal complexes possess a gamut of pharmacological properties and high degree of structural diversity that has proven it vital for the investigation for novel therapeutics. The 2nd position of benzothiazole is the most active site that makes 2-arylbenzothiazole as felicitous scaffolds in pharmaceutical chemistry. The extensive significance of benzo-fused heterocyclic moieties formation has led to broad and valuable different approaches for their synthesis. This review deals with the synthetic approaches developed so far for the synthesis of 2-arylbenzothiazoles. Moreover, this article abridges the publications devoted to the synthesis of this moiety over the last 6 years. This study gives a current precis of research on the fabrication of 2-arylbenzothiazoles through different synthetic pathways and shall be helpful for researchers and scientists who are working in this field to make more potent biologically active benzothiazole-based drugs.
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Affiliation(s)
- Ayushi Sethiya
- Department of Chemistry, Synthetic Organic Chemistry Laboratory, MLSU, Udaipur, 313001, India
| | - Nusrat Sahiba
- Department of Chemistry, Synthetic Organic Chemistry Laboratory, MLSU, Udaipur, 313001, India
| | - Pankaj Teli
- Department of Chemistry, Synthetic Organic Chemistry Laboratory, MLSU, Udaipur, 313001, India
| | - Jay Soni
- Department of Chemistry, Synthetic Organic Chemistry Laboratory, MLSU, Udaipur, 313001, India
| | - Shikha Agarwal
- Department of Chemistry, Synthetic Organic Chemistry Laboratory, MLSU, Udaipur, 313001, India.
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35
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Mishra KB, Rajkhowa S, Tiwari VK. An expeditious one-pot synthesis of thiourea derivatives of carbohydrates from sugar azides. J Carbohydr Chem 2020. [DOI: 10.1080/07328303.2020.1822997] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Kunj B. Mishra
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi, India
| | - Sanchayita Rajkhowa
- Department of Chemistry, Jorhat Institute of Science and Technology, Jorhat, India
| | - Vinod K. Tiwari
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi, India
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36
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Agrahari AK, Singh AS, Mukherjee R, Tiwari VK. An expeditious click approach towards the synthesis of galactose coated novel glyco-dendrimers and dentromers utilizing a double stage convergent method. RSC Adv 2020; 10:31553-31562. [PMID: 35520637 PMCID: PMC9056565 DOI: 10.1039/d0ra05289b] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Accepted: 08/10/2020] [Indexed: 11/29/2022] Open
Abstract
The primary motive behind this article is to bring to the forefront a unique kind of dendrimer which has remained a dark horse since its discovery, namely dentromer. We herein report the synthesis of glycodendrimers and glycodentromers crowned with galactose units by harnessing an expeditious synthesis of dendrimer core 18 and dentromer core 19, divergently with branching directionality (1 → 2) and (1 → 3), respectively. A competent, double stage convergent synthetic path was chosen to facilitate ease of refining and spectroscopic elucidations. By exploiting a Cu(i)-catalyzed azide-alkyne cycloaddition (CuAAC) reaction strategy, we successfully developed a new series of galactosylated dendrimers 20, 21, 22, and 24 containing 6, 12, 18, and 18 peripheral galactose units, respectively. We are first to report the practical synthesis of 9-peripheral galactose coated glycodentromer 23 (0th generation) and 27-peripheral galactose coated glycodentromer 25 (1st generation). These synthesized scaffolds were characterized by spectral studies such as 1H, 13C NMR, FT-IR, MALDI-TOF MS, HRMS and SEC analysis. Additionally, gel permeation chromatography depicted the regular progression in size from 6 to 27-peripheral galactose coated glycodendrimers along with glycodentromers, with their high monodispersity. Also, the glyco-dendrimers and dentromers synthesized from two different hypercore units i.e. dendrimers core (18) and dentromer core (19), have been supported by their UV-visible absorbance and emission spectroscopy.
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Affiliation(s)
- Anand K Agrahari
- Department of Chemistry, Centre of Advanced Study, Institute of Science, Banaras Hindu University Varanasi-221005 India
| | - Anoop S Singh
- Department of Chemistry, Centre of Advanced Study, Institute of Science, Banaras Hindu University Varanasi-221005 India
| | - Rishav Mukherjee
- Department of Chemistry, Centre of Advanced Study, Institute of Science, Banaras Hindu University Varanasi-221005 India
| | - Vinod K Tiwari
- Department of Chemistry, Centre of Advanced Study, Institute of Science, Banaras Hindu University Varanasi-221005 India
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Corona-Sánchez R, Sánchez-Eleuterio A, Negrón-Lomas C, Ruiz Almazan Y, Lomas-Romero L, Negrón-Silva GE, Rodríguez-Sánchez ÁC. Cu-Al mixed oxide-catalysed multi-component synthesis of gluco- and allofuranose-linked 1,2,3-triazole derivatives. ROYAL SOCIETY OPEN SCIENCE 2020; 7:200290. [PMID: 32874626 PMCID: PMC7428250 DOI: 10.1098/rsos.200290] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Accepted: 06/25/2020] [Indexed: 06/11/2023]
Abstract
A series of carbohydrate-linked 1,2,3-triazole derivatives were synthesized in good yields from glucofuranose and allofuranose diacetonides using as key step a three-component 1,3-dipolar azide-alkyne cycloaddition catalysed by a Cu-Al mixed oxide. In this multi-component reaction, Cu-Al mixed oxide/sodium ascorbate system serves as a highly reactive, recyclable and efficient heterogeneous catalyst for the regioselective synthesis of 1,4-disubstituted 1,2,3-triazoles. The reported protocol has significant advantages over classical CuI/N,N-diisopropylethylamine (DIPEA) or CuSO4/sodium ascorbate conditions in terms of efficiency and reduced synthetic complexity. In addition, the selective deprotection of synthesized di-O-isopropylidene derivatives was also carried out leading to the corresponding mono-O-isopropylidene products in moderate yields. Some of the synthesized triazole glycoconjugates were tested for their in vitro antimicrobial activity using the disc diffusion method against Gram-positive bacteria (Staphylococcus aureus and Bacillus subtilis), Gram-negative bacteria (Escherichia coli and Pseudomonas aeruginosa), as well as fungus (Aspergillus niger) and yeast (Candida utilis). The results revealed that these compounds exhibit moderate to good antimicrobial activity mainly against Gram-negative bacteria.
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Affiliation(s)
- Ricardo Corona-Sánchez
- Departamento de Química, Universidad Autónoma Metropolitana-Iztapalapa, Av. San Rafael Atlixco 186, Leyes de Reforma 1ra Secc., 09340 Ciudad de México, Mexico
| | - Alma Sánchez-Eleuterio
- Departamento de Ciencias Básicas, Universidad Autónoma Metropolitana-Azcapotzalco, Av. San Pablo No. 180, Ciudad de México C.P. 02200, Mexico
| | - Claudia Negrón-Lomas
- Departamento de Biotecnología, Instituto Tecnológico de Estudios Superiores de Monterrey, Calle del Puente 222, Ciudad de México C.P. 14380, Mexico
| | - Yarisel Ruiz Almazan
- Departamento de Biotecnología, Instituto Tecnológico de Estudios Superiores de Monterrey, Calle del Puente 222, Ciudad de México C.P. 14380, Mexico
| | - Leticia Lomas-Romero
- Departamento de Química, Universidad Autónoma Metropolitana-Iztapalapa, Av. San Rafael Atlixco 186, Leyes de Reforma 1ra Secc., 09340 Ciudad de México, Mexico
| | - Guillermo E. Negrón-Silva
- Departamento de Ciencias Básicas, Universidad Autónoma Metropolitana-Azcapotzalco, Av. San Pablo No. 180, Ciudad de México C.P. 02200, Mexico
| | - Álvaro C. Rodríguez-Sánchez
- Departamento de Biotecnología, Instituto Tecnológico de Estudios Superiores de Monterrey, Calle del Puente 222, Ciudad de México C.P. 14380, Mexico
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38
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Xiong W, Zhang S, Li H, Zhang Z, Xu T. Pd-Catalyzed Decarboxylative Cycloaddition of Vinylethylene Carbonates with Isothiocyanates. J Org Chem 2020; 85:8773-8779. [DOI: 10.1021/acs.joc.0c00243] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Wei Xiong
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, 1 Xuefu Road, Xi’an 710127, P. R. China
| | - Shengjun Zhang
- State Energy Key Lab of Clean Coal Grading Conversion Modern Chemical Technology Department, Shaanxi Key Laboratory of Low Rank Coal Pyrolysis, Shaanxi Coal and Chemical Technology Institute Co., Ltd., 2 Jinye Road, Xi’an 710065, P. R. China
| | - Huijun Li
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, 1 Xuefu Road, Xi’an 710127, P. R. China
| | - Zhifeng Zhang
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, 1 Xuefu Road, Xi’an 710127, P. R. China
| | - Tongyu Xu
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, 1 Xuefu Road, Xi’an 710127, P. R. China
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39
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Li M, Tang Y, Gao H, Rao G, Mao Z. Efficient Cu‐catalyzed Synthesis of Benzimidazoles Using Ammonia as Nitrogen Source in Water. ASIAN J ORG CHEM 2020. [DOI: 10.1002/ajoc.202000236] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Minxin Li
- College of Pharmaceutical ScienceYunnan University of Chinese Medicine Kunming 650500 China
| | - Yanling Tang
- College of Pharmaceutical ScienceYunnan University of Chinese Medicine Kunming 650500 China
| | - Hui Gao
- College of Pharmaceutical ScienceYunnan University of Chinese Medicine Kunming 650500 China
| | - Gaoxiong Rao
- College of Pharmaceutical ScienceYunnan University of Chinese Medicine Kunming 650500 China
| | - Zewei Mao
- College of Pharmaceutical ScienceYunnan University of Chinese Medicine Kunming 650500 China
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Abstract
In this Review, we consider all the publications since the beginning of the century that describe tandem reactions resulting in the formation of five-membered aromatic nitrogen heterocycles (thiazole, imidazole, indole, tetrazole, triazole, and isoxazole). The contents of this review are organized by taxonomy and type of tandem catalysis. It covers orthogonal, auto-, and assisted tandem catalysis, providing an overview of tandem reactions applied tonitrogen heterocycles reported in the literature up to March 2020. We believe that this compilation of data will provide a necessary starting reference to developthe applications of tandem catalysis in medicinal chemistry.
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41
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Shiri P. An overview on the copper‐promoted synthesis of five‐membered heterocyclic systems. Appl Organomet Chem 2020. [DOI: 10.1002/aoc.5600] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Pezhman Shiri
- Department of ChemistryShiraz University Shiraz Iran
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42
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Tang Y, Li M, Gao H, Rao G, Mao Z. Efficient Cu-catalyzed intramolecular O-arylation for synthesis of benzoxazoles in water. RSC Adv 2020; 10:14317-14321. [PMID: 35498497 PMCID: PMC9051899 DOI: 10.1039/d0ra00570c] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2020] [Accepted: 03/28/2020] [Indexed: 12/28/2022] Open
Abstract
An efficient method was developed for synthesis of benzoxazoles by Cu-catalyzed intramolecular O-arylation of o-halobenzanilides in water. This strategy provides several advantages, such as high yields, water as a green solvent and functional groups tolerance. An efficient method was developed for synthesis of benzoxazoles by Cu-catalyzed intramolecular O-arylation of o-halobenzanilides in water.![]()
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Affiliation(s)
- Yanling Tang
- College of Pharmaceutical Science, Yunnan University of Chinese Medicine Kunming 650500 P.R. China +86 871 65918232 +86 871 65918232
| | - Minxin Li
- College of Pharmaceutical Science, Yunnan University of Chinese Medicine Kunming 650500 P.R. China +86 871 65918232 +86 871 65918232
| | - Hui Gao
- College of Pharmaceutical Science, Yunnan University of Chinese Medicine Kunming 650500 P.R. China +86 871 65918232 +86 871 65918232
| | - Gaoxiong Rao
- College of Pharmaceutical Science, Yunnan University of Chinese Medicine Kunming 650500 P.R. China +86 871 65918232 +86 871 65918232
| | - Zewei Mao
- College of Pharmaceutical Science, Yunnan University of Chinese Medicine Kunming 650500 P.R. China +86 871 65918232 +86 871 65918232
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43
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Mishra N, Agrahari AK, Bose P, Singh SK, Singh AS, Tiwari VK. Click Inspired Synthesis of Novel Cinchonidine Glycoconjugates as Promising Plasmepsin Inhibitors. Sci Rep 2020; 10:3586. [PMID: 32108142 PMCID: PMC7046651 DOI: 10.1038/s41598-020-59477-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2019] [Accepted: 01/24/2020] [Indexed: 11/17/2022] Open
Abstract
Among all the malaria parasites, P. falciparum is the most predominant species which has developed drug resistance against most of the commercial anti-malarial drugs. Thus, finding a new molecule for the inhibition of enzymes of P. falciparum is the pharmacological challenge in present era. Herein, ten novel molecules have been designed with an amalgamation of cinchonidine, carbohydrate moiety and triazole ring by utilizing copper-catalyzed click reaction of cinchonidine-derived azide and clickable glycosyl alkynes. The molecular docking of developed molecules showed promising results for plasmepsin inhibition in the form of effective binding with target proteins.
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Affiliation(s)
- Nidhi Mishra
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
| | - Anand K Agrahari
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
| | - Priyanka Bose
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
| | - Sumit K Singh
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
| | - Anoop S Singh
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
| | - Vinod K Tiwari
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi, 221005, India.
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44
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Shah SS, Shee M, Singh AK, Paul A, Singh NDP. Direct Oxygenation of C-H Bonds through Photoredox and Palladium Catalysis. J Org Chem 2020; 85:3426-3439. [PMID: 31955576 DOI: 10.1021/acs.joc.9b03197] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
This report presents the oxygenation of C-H bonds via the merger of photocatalysis and Pd catalysis. Herein, we describe the utilization of a photocatalyst to oxidize an organopalladium(II) intermediate to high-valent PdIII or PdIV intermediates, which promotes the formation of C-O bonds. The demonstrated method works efficiently with various directing groups, such as oxime ether and benzothiazole. The applicability of this direct C-O bond formation method is shown by synthesizing several metal complexes of 2-(benzo[d]thiazol-2-yl)phenol that can be used in organic light-emitting diodes and pharmaceuticals.
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Affiliation(s)
- Sk Sheriff Shah
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal 721302, India
| | - Maniklal Shee
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal 721302, India
| | - Amit Kumar Singh
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal 721302, India
| | - Amrita Paul
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal 721302, India
| | - N D Pradeep Singh
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal 721302, India
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45
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Liu X, Dong ZB. A Review on Domino Condensation/Cyclization Reactions for the Synthesis of 2-Substituted 1,3-Benzothiazole Derivatives. European J Org Chem 2020. [DOI: 10.1002/ejoc.201901502] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Xing Liu
- School of Chemistry and Environmental Engineering; Wuhan Institute of Technology; 430205 Wuhan China
| | - Zhi-Bing Dong
- School of Chemistry and Environmental Engineering; Wuhan Institute of Technology; 430205 Wuhan China
- Key Laboratory of Green Chemical Process; Ministry of Education; Wuhan Institute of Technology; 430205 Wuhan China
- Ministry-of-Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules; Ministry of Education; Hubei University; 430062 Wuhan China
- Hubei Key Laboratory of Novel Reactor and Green Chemistry Technology; Ministry of Education; Wuhan Institute of Technology; 430205 Wuhan China
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46
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Agrahari AK, Singh AK, Singh AS, Singh M, Maji P, Yadav S, Rajkhowa S, Prakash P, Tiwari VK. Click inspired synthesis of p-tert-butyl calix[4]arene tethered benzotriazolyl dendrimers and their evaluation as anti-bacterial and anti-biofilm agents. NEW J CHEM 2020. [DOI: 10.1039/d0nj02591g] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
CuAAC inspired calix-[4]arene tethered benzotriazolyl dendrimers were developed and investigated for their therapeutic potential, where 7 displayed potent anti-bacterial and anti-biofilm activities against drug-resistant & slime producing organisms.
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Affiliation(s)
- Anand K. Agrahari
- Department of Chemistry
- Centre of Advanced Study
- Institute of Science
- Banaras Hindu University
- Varanasi-221005
| | - Ashish K. Singh
- Bacterial Biofilm and Drug Resistance Research Laboratory
- Department of Microbiology, Institute of Medical Sciences
- Banaras Hindu University
- Varanasi-221005
- India
| | - Anoop S. Singh
- Department of Chemistry
- Centre of Advanced Study
- Institute of Science
- Banaras Hindu University
- Varanasi-221005
| | - Mala Singh
- Department of Chemistry
- Centre of Advanced Study
- Institute of Science
- Banaras Hindu University
- Varanasi-221005
| | - Pathik Maji
- Department of Chemistry
- Guru Ghasidas University
- Bilaspur-495009
- India
| | - Shivangi Yadav
- Bacterial Biofilm and Drug Resistance Research Laboratory
- Department of Microbiology, Institute of Medical Sciences
- Banaras Hindu University
- Varanasi-221005
- India
| | - Sanchayita Rajkhowa
- Department of Chemistry
- Jorhat Institute of Science and Technology
- Jorhat-785010
- India
| | - Pradyot Prakash
- Bacterial Biofilm and Drug Resistance Research Laboratory
- Department of Microbiology, Institute of Medical Sciences
- Banaras Hindu University
- Varanasi-221005
- India
| | - Vinod K. Tiwari
- Department of Chemistry
- Centre of Advanced Study
- Institute of Science
- Banaras Hindu University
- Varanasi-221005
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47
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Zhu YQ, Zhang R, Sang W, Wang HJ, Wu Y, Yu BY, Zhang JC, Cheng H, Chen C. Ligand-controlled palladium catalysis enables switch between mono- and di-arylation of primary aromatic amines with 2-halobenzothiazoles. Org Chem Front 2020. [DOI: 10.1039/d0qo00361a] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Mono- and di-arylation was switchable simply by varying the applied ligand from Xantphos to a pyridine-functionalized N-heterocyclic carbene (NHC) ligand.
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Affiliation(s)
- Yan-Qiu Zhu
- Department of Chemical Engineering and Food Science
- Hubei University of Arts and Science
- Xiangyang 441053
- P. R. China
| | - Rui Zhang
- Department of Chemical Engineering and Food Science
- Hubei University of Arts and Science
- Xiangyang 441053
- P. R. China
| | - Wei Sang
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing
- Wuhan University of Technology
- Wuhan 430070
- P. R. China
| | - Hua-Jing Wang
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing
- Wuhan University of Technology
- Wuhan 430070
- P. R. China
| | - Yuan Wu
- Key Laboratory of Pesticide & Chemical Biology
- Ministry of Education
- College of Chemistry
- Central China Normal University
- Wuhan 430079
| | - Bao-Yi Yu
- Key Laboratory of Urban Agriculture (North China)
- Ministry of Agriculture
- Beijing University of Agriculture
- Beijing 102206
- P. R. China
| | - Jun-Chao Zhang
- Department of Chemical Engineering and Food Science
- Hubei University of Arts and Science
- Xiangyang 441053
- P. R. China
| | - Hua Cheng
- Department of Chemical Engineering and Food Science
- Hubei University of Arts and Science
- Xiangyang 441053
- P. R. China
| | - Cheng Chen
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing
- Wuhan University of Technology
- Wuhan 430070
- P. R. China
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48
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Zhang J, Chen L, Dong Y, Yang J, Wu Y. A Cu 2O/TBAB-promoted approach to synthesize heteroaromatic 2-amines via one-pot cyclization of aryl isothiocyanates with ortho-substituted amines in water. Org Biomol Chem 2020; 18:7425-7430. [PMID: 32936165 DOI: 10.1039/d0ob01431a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient approach to synthesize heteroaromatic 2-amines from one-pot desulfurization/dehydrogenative cyclization of aryl isothiocyanates with ortho-substituted amines in water was developed. This approach tolerated a wide range of functional groups on the aromatic ring, providing a practical and environment-friendly process to synthesize heteroaromatic 2-amines in moderate to excellent yields. A plausible mechanism was proposed and the role of TBAB and Cu2O in the present strategy was suggested with the help of ESI mass spectrometry.
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Affiliation(s)
- Jinli Zhang
- Henan Key Laboratory of Chemical Biology and Organic Chemistry, Key Laboratory of Applied Chemistry of Henan Universities, Zhengzhou University, Zhengzhou, 450052, P.R. China. and College of Chemistry, Green Catalytic Center, Zhengzhou University, Zhengzhou 450001, P. R. China
| | - Ling Chen
- Henan Key Laboratory of Chemical Biology and Organic Chemistry, Key Laboratory of Applied Chemistry of Henan Universities, Zhengzhou University, Zhengzhou, 450052, P.R. China.
| | - Yibo Dong
- Henan Key Laboratory of Chemical Biology and Organic Chemistry, Key Laboratory of Applied Chemistry of Henan Universities, Zhengzhou University, Zhengzhou, 450052, P.R. China.
| | - Jinchen Yang
- College of Chemistry, Green Catalytic Center, Zhengzhou University, Zhengzhou 450001, P. R. China
| | - Yangjie Wu
- Henan Key Laboratory of Chemical Biology and Organic Chemistry, Key Laboratory of Applied Chemistry of Henan Universities, Zhengzhou University, Zhengzhou, 450052, P.R. China. and College of Chemistry, Green Catalytic Center, Zhengzhou University, Zhengzhou 450001, P. R. China
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49
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Zhang J, Li R, Zhu F, Sun C, Shen J. An improved synthesis of telmisartan via the copper-catalyzed cyclization of o-haloarylamidines. RSC Adv 2020; 10:13717-13721. [PMID: 35493026 PMCID: PMC9051534 DOI: 10.1039/d0ra00886a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Accepted: 03/21/2020] [Indexed: 12/12/2022] Open
Abstract
A concise synthetic route was designed for making telmisartan. The key bis-benzimidazole structure was constructed via the copper-catalyzed cyclization of o-haloarylamidines. By adopting this approach, telmisartan was obtained in a 7-step overall yield of 54% starting from commercially available 3-methyl-4-nitrobenzoic acid, and the use of HNO3/H2SO4 for nitration and polyphosphoric acid (PPA) for cyclization in the reported literatures were avoided. A concise synthetic route of telmisartan was developed via the copper-catalyzed cyclization of o-haloarylamidines, avoiding the use of HNO3/H2SO4 and polyphosphoric acid (PPA).![]()
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Affiliation(s)
- Junchi Zhang
- CAS Key Laboratory of Receptor Research
- Shanghai Institute of Materia Medica
- Chinese Academy of Sciences (CAS)
- Shanghai 201203
- People's Republic of China
| | - Rui Li
- CAS Key Laboratory of Receptor Research
- Shanghai Institute of Materia Medica
- Chinese Academy of Sciences (CAS)
- Shanghai 201203
- People's Republic of China
| | - Fuqiang Zhu
- Topharman Shanghai Co., Ltd
- Shanghai 201203
- People's Republic of China
| | - Changliang Sun
- Topharman Shanghai Co., Ltd
- Shanghai 201203
- People's Republic of China
| | - Jingshan Shen
- CAS Key Laboratory of Receptor Research
- Shanghai Institute of Materia Medica
- Chinese Academy of Sciences (CAS)
- Shanghai 201203
- People's Republic of China
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50
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Singh M, Bose P, Singh AS, Tiwari VK. 1‐(Hydroxymethyl)‐1
H
‐benzotriazole: An Efficient Ligand for Copper‐Catalyzed Ullmann‐Type Coupling Reaction Leading to Expeditious Synthesis of Diverse Benzoxazoles and Benzothiazoles. ChemistrySelect 2019. [DOI: 10.1002/slct.201902420] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Mala Singh
- Department of ChemistryInstitute of ScienceBanaras Hindu University, Varansi Uttar Pradesh-221005 INDIA
| | - Priyanka Bose
- Department of ChemistryInstitute of ScienceBanaras Hindu University, Varansi Uttar Pradesh-221005 INDIA
| | - Anoop S. Singh
- Department of ChemistryInstitute of ScienceBanaras Hindu University, Varansi Uttar Pradesh-221005 INDIA
| | - Vinod K. Tiwari
- Department of ChemistryInstitute of ScienceBanaras Hindu University, Varansi Uttar Pradesh-221005 INDIA
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