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Vadivelu M, Raheem AA, Raj JP, Elangovan J, Karthikeyan K, Praveen C. Mechanochemical Access to Functional Clickates with Nitro-Retentive Selectivity via Organocatalyzed Oxidative Azide-Olefin Cycloaddition. Org Lett 2022; 24:2798-2803. [DOI: 10.1021/acs.orglett.2c00621] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Murugan Vadivelu
- Department of Chemistry, B. S. Abdur Rahman Crescent Institute of Science and Technology, Chennai 600048, India
| | - Abbasriyaludeen Abdul Raheem
- Electrochemical Power Sources Division, CSIR-Central Electrochemical Research Institute, Karaikudi 630003, India
| | - John Paul Raj
- Department of Chemistry, B. S. Abdur Rahman Crescent Institute of Science and Technology, Chennai 600048, India
| | - Jebamalai Elangovan
- Department of Chemistry, Rajah Serfoji Government College, Thanjavur 613005, India
| | - Kesavan Karthikeyan
- Department of Chemistry, B. S. Abdur Rahman Crescent Institute of Science and Technology, Chennai 600048, India
| | - Chandrasekar Praveen
- Electrochemical Power Sources Division, CSIR-Central Electrochemical Research Institute, Karaikudi 630003, India
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Rengasamy R, Raj JP, Vijayalakshmi K, Punitha N, Kesavan M, Vajjiravel M, Elangovan J. Tunable Synthesis of 1,2,3‐Triazoles and Enamines through Deacylative Azide‐Alkene Cycloaddition. European J Org Chem 2022. [DOI: 10.1002/ejoc.202101470] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- R. Rengasamy
- Rajah Serfoji Government College Chemistry INDIA
| | - J. Paul Raj
- BS Abdur Rahman University: B S Abdur Rahman Crescent Institute of Science & Technology Chemistry INDIA
| | | | - N. Punitha
- Rajah Serfoji Government College Chemistry INDIA
| | - M. Kesavan
- SRM-RI: SRM Research Institute Kattankulathur IISM INDIA
| | - M Vajjiravel
- BS Abdur Rahman University: B S Abdur Rahman Crescent Institute of Science & Technology Chemistry INDIA
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Rengasamy R, Vijayalakshmi K, Punitha N, Paul Raj J, Karthikeyan K, Elangovan J. A novel route to 1,4-disubstituted-1,2,3-triazoles through metal-free decarboxylative azide-alkene cycloaddition. Tetrahedron Lett 2021. [DOI: 10.1016/j.tetlet.2021.153440] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Liddon JTR, Lindsay-Scott PJ, Robertson J. Secondary Products from Intramolecular Cycloadditions of Azidoalkyl Enol Ethers and Azidoalkyl Vinyl Bromides: 1-Azadienes, Their Reactions with Diphenylketene, and Radical Cyclizations To Form Bi- and Tricyclic Lactams. J Org Chem 2019; 84:13780-13793. [PMID: 31545042 DOI: 10.1021/acs.joc.9b02005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Azidoalkyl enol ethers undergo intramolecular 1,3-dipolar cycloaddition to generate stable triazolines; in contrast, the cycloadducts formed by heating analogous azidoalkyl vinyl bromides are unstable with respect to elimination of N2 and HBr, affording 1-azadienes (2-alkenyl cyclic imines). These primary products may be isolated or treated directly with diphenylketene to produce bi- and tricyclic 3,4-dihydropyridin-2(1H)-ones; similar ring systems may also be produced from the azadienes by N-acylation and radical cyclization.
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Affiliation(s)
- John T R Liddon
- Department of Chemistry, Chemistry Research Laboratory , University of Oxford , Mansfield Road , Oxford OX1 3TA , U.K
| | | | - Jeremy Robertson
- Department of Chemistry, Chemistry Research Laboratory , University of Oxford , Mansfield Road , Oxford OX1 3TA , U.K
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Kaushik CP, Sangwan J, Luxmi R, Kumar K, Pahwa A. Synthetic Routes for 1,4-disubstituted 1,2,3-triazoles: A Review. CURR ORG CHEM 2019. [DOI: 10.2174/1385272823666190514074146] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
N-Heterocyclic compounds like 1,2,3-triazoles serve as a key scaffolds among organic compounds having diverse applications in the field of drug discovery, bioconjugation, material science, liquid crystals, pharmaceutical chemistry and solid phase organic synthesis. Various drugs containing 1,2,3-triazole ring which are commonly available in market includes Rufinamide, Cefatrizine, Tazobactam etc., Stability to acidic/basic hydrolysis along with significant dipole moment support triazole moiety for appreciable participation in hydrogen bonding and dipole-dipole interactions with biological targets. Huisgen 1,3-dipolar azide-alkyne cycloaddition culminate into a mixture of 1,4 and 1,5- disubstituted 1,2,3-triazoles. In 2001, Sharpless and Meldal came across with a copper(I) catalyzed regioselective synthesis of 1,4-disubstituted 1,2,3-triazoles by cycloaddition between azides and terminal alkynes. This azide-alkyne cycloaddition has been labelled as a one of the important key click reaction. Click synthesis describes chemical reactions that are simple to perform, gives high selectivity, wide in scope, fast reaction rate and high yields. Click reactions are not single specific reaction, but serve as a pathway for construction of simple to complex molecules from a variety of starting materials. In the last few decades, 1,2,3-triazoles attracted attention of researchers all over the world because of their broad spectrum of biological activities. Keeping in view the biological importance of 1,2,3-triazole, in this review we focus on the various synthetic routes for the syntheisis of 1,4-disubstituted 1,2,3-triazoles. This review involves various synthetic protocols which involves copper and non-copper catalysts, different solvents as well as substrates. It will boost synthetic chemists to explore new pathway for the development of newer biologically active 1,2,3-triazoles.
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Affiliation(s)
- Chander P. Kaushik
- Department of Chemistry, Guru Jambheshwar University of Science & Technology, Hisar, Haryana-125001, India
| | - Jyoti Sangwan
- Department of Chemistry, Guru Jambheshwar University of Science & Technology, Hisar, Haryana-125001, India
| | - Raj Luxmi
- Department of Chemistry, Guru Jambheshwar University of Science & Technology, Hisar, Haryana-125001, India
| | - Krishan Kumar
- Department of Chemistry, Guru Jambheshwar University of Science & Technology, Hisar, Haryana-125001, India
| | - Ashima Pahwa
- Department of Chemistry, Guru Jambheshwar University of Science & Technology, Hisar, Haryana-125001, India
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Gangaprasad D, Raj JP, Karthikeyan K, Rengasamy R, Elangovan J. An Efficient One-Pot Synthesis of 1,2,3-Triazole-Fused Chromenes/Quinolines via
Oxidative [3+2] Cycloaddition followed by Reductive Cyclization. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201800908] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- D. Gangaprasad
- Department of Chemistry; B. S. Abdur Rahman Crescent Institute of Science & Technology, Vandalur; Chennai - 600048 India
| | - J. Paul Raj
- Department of Chemistry; B. S. Abdur Rahman Crescent Institute of Science & Technology, Vandalur; Chennai - 600048 India
| | - K. Karthikeyan
- Department of Chemistry; B. S. Abdur Rahman Crescent Institute of Science & Technology, Vandalur; Chennai - 600048 India
| | - R. Rengasamy
- Department of Chemistry; Rajah Serfoji Government College, Thanjavur; Tamilnadu - 613204 India
| | - J. Elangovan
- Department of Chemistry; Rajah Serfoji Government College, Thanjavur; Tamilnadu - 613204 India
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