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 highly efficient and reusable MCM-41-immobilized bipyridine copper(<scp>i</scp>) catalyst for the C–Se coupling of organoboronic acids with diaryl diselenides
作者:Hong Zhao、Yuanyuan Jiang、Qiurong Chen、Mingzhong Cai
DOI:10.1039/c4nj01687d
日期:——
A highlyefficient MCM-41-immobilized bipyridine copper(I) complex [MCM-41-bpy-CuI] was prepared from 4,4′-bis[3-(triethoxysilyl)propylaminomethyl]-2,2′-bipyridine via immobilization on the mesoporous material MCM-41, followed by reaction with CuI. In the presence of 5 mol% MCM-41-bpy-CuI, the cross-coupling reaction of organoboronicacids with diaryl diselenides proceeded smoothly in DMSO/H2O (2/1)
A高效MCM-41固定联吡啶铜(我)络合物[MCM-41联吡啶翠]从4,4'-双[3-(三乙氧基硅基)丙基氨基] -2,2'-联吡啶制备通过固定上介孔材料MCM-41,然后与CuI反应。在5 mol%MCM-41-bpy-CuI的存在下,有机硼酸与二芳基二硒化物的交叉偶联反应在DMSO / H 2 O(2/1)中于110°C的空气中顺利进行,得到了多种二有机基硒化物,收率好至极好。可以通过简单过滤反应溶液来回收和再循环这种多相铜催化剂,并在不降低活性的情况下,至少进行了10次连续试验。
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
diaryl selenides has been developed by a copperferritenanoparticle catalyzed reaction of aryl iodides/aryl bromides with diphenyldiselenide in the presence of base and solvent at 120 °C. Using this protocol, a variety of diselenides were obtained in good to excellent yields. The copperferritenanoparticles were magnetically separated, recycled, and reused up to three cycles.
在碱和溶剂存在下,在 120 °C 下,通过铁氧体铜纳米粒子催化芳基碘化物/芳基溴化物与二苯基二硒化物反应,开发了一种简单有效的合成二芳基硒化物的方法。使用该协议,以良好到极好的收率获得了多种二硒化物。铜铁氧体纳米粒子被磁性分离、回收和重复使用最多三个循环。