Synthesis of 3-(tri/difluoromethyl)-1H-1,2,4-triazol-5(4H)-ones via the cyclization of hydrazinecarboxamides with tri/difluoroacetic anhydride?
Organic & Biomolecular Chemistry Pub Date: 2019-10-08 DOI: 10.1039/C9OB01865D
Abstract
An efficient method for the synthesis of structurally diverse 4-aryl-3-(tri/difluoromethyl)-1H-1,2,4-triazol-5(4H)-ones through the cyclization of hydrazinecarboxamides with tri/difluoroacetic anhydride is presented. The method is simple and environmentally benign, providing tri/difluoromethylated 1,2,4-triazol-5(4H)-ones in moderate-to-good yields. A mechanism is proposed to proceed via a tandem reaction of tri/difluoroacetylation, nucleophilic addition and water elimination. Some of these compounds exhibit promising insecticidal activities.
Recommended Literature
- [1] An assessment of strategies for the development of solid-state adsorbents for vehicular hydrogen storage Mark D. Allendorf,Alauddin Ahmed,Tom Autrey,Jeffrey Camp,Eun Seon Cho,Maciej Haranczyk,Abhi Karkamkar,Di-Jia Liu,Katie R. Meihaus,Iffat H. Nayyar,Roman Nazarov,Donald J. Siegel,Vitalie Stavila,Jeffrey J. Urban,Srimukh Prasad Veccham,Brandon C. WoodEnergy Environ. Sci., 2018,11, 2784-2812 10.1039/C8EE01085D
- [2] Acetyl group orientation modulates the electronic ground-state asymmetry of the special pair in purple bacterial reaction centers P. K. Wawrzyniak,M. T. P. Beerepoot,H. J. M. de Groot,F. BudaPhys. Chem. Chem. Phys., 2011,13, 10270-10279 10.1039/C1CP20213H
- [3] An amorphous Cu–In–S nanoparticle-based precursor ink with improved atom economy for CuInSe2 solar cells with 10.85% efficiency? Green Chem., 2017,19, 1268-1277 10.1039/C6GC03280J
- [4] An investigation into the origin of variations in photovoltaic performance using D–D–π–A and D–A–π–A triphenylimidazole dyes with a copper electrolyte? Govind ReddyMol. Syst. Des. Eng., 2021,6, 779-789 10.1039/D1ME00073J
- [5] Aluminium complexes with thio-phosphorus ligands: syntheses and characterisations of [Al2(CyPS3)2(CyPHS2)2] and [Al(S2PPh2)3]? Robert P. Davies,Maria A. Giménez,Laura Patel,Andrew J. P. WhiteDalton Trans., 2008, 5705-5707 10.1039/B813427H
- [6] An aptasensor for the detection of ampicillin in milk using a personal glucose meter Xixi Li,Nanwei Zhu,Ruohan Li,Qinpu ZhangAnal. Methods, 2020,12, 3376-3381 10.1039/D0AY00256A
- [7] An astrophysically-relevant mechanism for amino acid enantiomer enrichment Stephen P. Fletcher,Richard B. C. Jagt,Ben L. FeringaChem. Commun., 2007, 2578-2580 10.1039/B702882B
- [8] An investigation of new infrared nonlinear optical material: BaCdSnSe4, and three new related centrosymmetric compounds: Ba2SnSe4, Mg2GeSe4, and Ba2Ge2S6? Kui Wu,Zhihua Yang,Shilie PanDalton Trans., 2015,44, 19856-19864 10.1039/C5DT03215F
- [9] An all-solid-state imprinted polymer-based potentiometric sensor for determination of bisphenol S? Rongning Liang,Tanji Yin,Ruiqing Yao,Wei QinRSC Adv., 2016,6, 73308-73312 10.1039/C6RA14461F
- [10] An atomically efficient, highly stable and redox active Ce0.5Tb0.5Ox (3% mol.)/MgO catalyst for total oxidation of methane? Juan J. Sánchez,Miguel López-Haro,Juan C. Hernández-Garrido,Ginesa Blanco,Miguel A. Cauqui,José M. Rodríguez-Izquierdo,José A. Pérez-Omil,José J. Calvino,María P. YesteJ. Mater. Chem. A, 2019,7, 8993-9003 10.1039/C8TA11672E
Journal Name：Organic & Biomolecular Chemistry
research_products
-
CAS no.: 89640-58-4
![N-(3-cyanothiolan-3-yl)-2-[(2,2,2-trifluoroethyl)sulfanyl]pyridine-4-carboxamide](https://ossimg.kuujia.com/scimg/1444500/1444113-98-7x500.png)
![1,2,3,4,5,6-Hexahydro-[2,3]bipyridinyl-6-ol](https://ossimg.kuujia.com/scimg/1271000/1270529-38-8x500.png)
![2,2-Difluoro-3-[methyl(2-methylbutyl)amino]propanoic acid](https://ossimg.kuujia.com/scimg/2138500/2138166-62-6x500.png)
![2-(1H-indol-3-yl)-N-{[6-(thiophen-2-yl)-[1,2,4]triazolo[4,3-b]pyridazin-3-yl]methyl}acetamide](https://ossimg.kuujia.com/scimg/2034500/2034271-14-0x500.png)