Synthesis, characterization and antibacterial activity of the thioether linked 1,2,3-triazoles
作者:Chander P. Kaushik、Jyoti Sangwan
DOI:10.1080/00397911.2021.1974040
日期:2021.11.17
green synthetic approach for the expedite construction of thirty six thioether linked 1,2,3-triazoles was carried out using Cellulose supported CuI nanoparticles in water. The structure of synthesized triazoles was explicated by spectroscopic techniques like FTIR, 1H NMR, 13C NMR, HRMS and evaluated for in vitro antibacterial potential against Staphylococcus aureus, Bacillus subtilis, Escherichia coli
摘要 使用纤维素支持的 CuI 纳米粒子在水中进行了一种绿色合成方法,用于加速构建 36 个硫醚连接的 1,2,3-三唑。合成的三唑类化合物的结构通过 FTIR、1 H NMR、13 C NMR、HRMS 等光谱技术进行了解释,并评估了对金黄色葡萄球菌、枯草芽孢杆菌、大肠杆菌和肺炎克雷伯菌的体外抗菌潜力。大多数合成的三唑衍生物表现出平均到良好的抑制活性。然而,化合物6x对测试的细菌菌株显示出明显的有效活性。电脑模拟 ADME 分析表明这些化合物具有良好的生物利用度。
Gold-Catalyzed Oxidative Hydrative Alkenylations of Propargyl Aryl Thioethers with Quinoline <i>N</i>-Oxides Involving a 1,3-Sulfur Migration
作者:Sachin Bhausaheb Wagh、Rahulkumar Rajmani Singh、Rajkumar Lalji Sahani、Rai-Shung Liu
DOI:10.1021/acs.orglett.9b00705
日期:2019.4.19
This work reports gold-catalyzed oxidative alkenylations of quinoline N-oxides with propargyl aryl thioethers to afford 3-hydroxy-1-alkylidenephenylthiopropan-2-one via a 1,3-sulfur group migration. The mechanism of this reaction is postulated to involve an α-oxo gold carbene intermediate followed by formation of a four-membered sulfonium ring that is ring-opened by one H2O to form a gold enolate. A
Enabling iron catalyzed Doyle–Kirmse rearrangement reactions with in situ generated diazo compounds
作者:Katharina J. Hock、Lucas Mertens、Renè Hommelsheim、Robin Spitzner、Rene M. Koenigs
DOI:10.1039/c7cc02801f
日期:——
Slow addition of sodium nitrite allows the in situ preparation of highly explosive diazo compounds and enables their safe and scalable application in ironcatalyzed rearrangement reactions of allylic and propargylic sulfides. With catalyst loadings as low as 0.1 mol% an effective entry into α-mercapto-nitriles, α-mercapto-esters and α-trifluoromethyl-sulfides on a gram-scale is achieved.
Synthesis of (arylselanyl)- and (arylsulfenyl)-alkyl-1,2,3-triazolo-1,3,6-triazonines via a copper-catalyzed multicomponent reaction
作者:Thalita B. Aquino、José Edmilson R. do Nascimento、Ítalo F.C. Dias、Daniela H. de Oliveira、Thiago Barcellos、Eder J. Lenardão、Gelson Perin、Diego Alves、Raquel G. Jacob
DOI:10.1016/j.tetlet.2018.01.072
日期:2018.3
copper-catalyzed multicomponent reaction was developed for the synthesis of (arylselanyl)- or (arylsulfenyl)-alkyl-1,2,3-triazolo-1,3,6-triazonines. The products were obtained in moderate to excellent yields via the reaction of o-phenylenediamine, 2-azidobenzaldehyde and different arylchalcogenyl alkynes using catalytic copper iodide in 1,4-dioxane at 100 °C. The reactions tolerated a range of substituents
3-allyl/3-allenyl-3-(thio)oxindole core remains a challenge in organic synthesis. Herein, we report a novel Rh2(esp)2 catalytic Doyle–Kirmse reaction to furnish the oxindole core, bearing unbiased NH as well as a quaternary stereogenic center at the 3-position, in good to excellent yields under mild conditions. These reactions are concise, practical, atom-economic, and highly efficient, and feature a TON