Simple and catalyst-free method for the synthesis of diaryl selenides by reactions of arylselenols and arenediazonium salts
作者:Renata A. Balaguez、Vanessa Gentil Ricordi、Camilo S. Freitas、Gelson Perin、Ricardo F. Schumacher、Diego Alves
DOI:10.1016/j.tetlet.2013.12.086
日期:2014.1
catalyst-free method to synthesize diaryl selenides by reaction of arenediazonium tetrafluoroborate salts with arylselenols, generated in situ by using diaryl diselenides and hypophosphorous acid (H3PO2), using THF as solvent. This is a direct nucleophilic aromatic substitution (SNAr) reaction performed with diaryl diselenides and arenediazoniumsalts bearing electron-withdrawing and electron-donating
我们在此描述一种简单且无催化剂的方法,该方法是通过使用二芳基二硒化物和次磷酸(H 3 PO 2),以四氢呋喃为溶剂,通过四氟硼酸芳族重氮鎓盐与芳基硒醇的反应来合成二芳基硒化物。这是直接的亲核芳族取代(SNAr)反应,使用带有吸电子和供电子基团的二芳基二硒化物和烯二唑鎓盐以中等至良好的收率提供相应的二芳基硒化物。
Trichloroisocyanuric Acid‐Promoted Synthesis of Arylselenides and Aryltellurides from Diorganyl Dichalcogenides and Arylboronic Acids at Ambient Temperature
作者:Nan Sun、Kai Zheng、Pengyuan Sun、Yang Chen、Liqun Jin、Baoxiang Hu、Zhenlu Shen、Xinquan Hu
DOI:10.1002/adsc.202100371
日期:2021.7.20
method for the synthesis of arylselenides and aryltellurides has been established based on the oxidative cross-coupling between diorganyl dichalcogenides and aryl boronic acids. With trichloroisocyanuric acid as an oxidant, the reaction proceeded smoothly to afford the desired products in 45–97% yields at ambient temperature. Three reaction reagents used in this method are stoichiometric and the oxidation
New routes for the synthesis of unsymmetrical diarylselenides: Effect of heat, light and ultrasound
作者:Amber J. Sahani、Anand S. Burange、Seema D. Thakur、Radha V. Jayaram
DOI:10.1016/j.mcat.2019.110534
日期:2019.10
presence of sunlight and UV light but also under thermal condition for comparison study. Moreover, ultrasound assisted new catalytic protocol was developed using Ni(II)/L-proline system in DMSO with the advantage of shorter reaction time compared to earlier reports. We have also developed a new C-Se cross coupling reaction where phenylselenyl chloride and arylhydrazine hydrochlorides were effectively coupled
Efficient Heterogeneous Copper-Catalysed C–Se Coupling of Aryl Iodides with Symmetrical Diselenides towards Unsymmetrical Monoselenides
作者:Ruonan Zhao、Chenyu Yan、Yuanyuan Jiang、Mingzhong Cai
DOI:10.3184/174751918x15409874473285
日期:2018.11
A highly efficient heterogeneous copper(I)-catalysed C–Se coupling of aryl iodides with diaryl diselenides was achieved in dimethylformamide at 110 °C under neutral conditions by using a 10 mol% of bipyridine-functionalised MCM-41-supported copper(I) complex [bpy-MCM-41-CuI] as the catalyst and magnesium as the reductive reagent, yielding a variety of unsymmetrical diaryl selenides in good to excellent
A new method of deborylative selanylation using arylboronic acids and arylseleninicacids gave diaryl selenoethers and diarylselenoxide. The present approach requires only equimolar arylseleninicacid and led selectively to selenoethers or selenoxides depending on the solvent. The method is metal-free, base- or oxidant-free, efficient, and environmentally friendly.