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
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.
We herein describe an alternative metal-free methodology for the synthesis of diorganyl selenides and tellurides mediated by Oxone®. The products were obtained in moderate to excellent yields by reactions of diorganyl diselenides or ditellurides with aryl boronic acids mediated by Oxone® with use of EtOH as the solvent. The methodology is applicable to a broad scope of diorganyl dichalcogenides and
Glycerol as a recyclable solvent for copper-catalyzed cross-coupling reactions of diaryl diselenides with aryl boronic acids
作者:Vanessa G. Ricordi、Camilo S. Freitas、Gelson Perin、Eder J. Lenardão、Raquel G. Jacob、Lucielli Savegnago、Diego Alves
DOI:10.1039/c2gc16427b
日期:——
We describe herein the use of glycerol as the solvent in the copper-catalyzed cross-coupling reaction of diaryl diselenides with arylboronic acids using CuI and DMSO as additive. This cross-coupling reaction was performed with diaryl diselenides and arylboronic acids bearing electron-withdrawing and electron-donating groups, affording the corresponding diaryl selenides in good to excellent yields. The glycerol–CuI mixture can be directly reused for further cross-coupling reactions.
我们在此介绍在铜催化的二芳基二硒化物与芳基硼酸的交叉偶联反应中,使用甘油作为溶剂,以 CuI 和 DMSO 作为添加剂。这种交叉偶联反应是用二芳基二硒化物和带有电子吸收基团和电子捐赠基团的芳基硼酸进行的,可以得到相应的二芳基硒化物,收率从良好到极佳。甘油-CuI 混合物可直接用于进一步的交叉偶联反应。
CuO nanoparticles: an efficient and recyclable catalyst for cross-coupling reactions of organic diselenides with aryl boronic acids
作者:Diego Alves、Cayane G. Santos、Márcio W. Paixão、Letiére C. Soares、Diego de Souza、Oscar E.D. Rodrigues、Antônio L. Braga
DOI:10.1016/j.tetlet.2009.09.052
日期:2009.12
We present here an efficient and ligand-free cross-coupling reaction of organic diselenides with aryl boronicacids using a catalytic amount of CuO nanoparticles in DMSO at 100 °C under air atmosphere. This is a general cross-coupling reaction and was performed with organic diselenides and aryl boronicacids bearing electron-withdrawing and electron-donating groups affording the corresponding selenides