80448-00-6Relevant academic research and scientific papers
Nickel-Catalyzed Intramolecular Decarbonylative Coupling of Aryl Selenol Esters
Bai, Jin-Hua,Qi, Xiu-Juan,Sun, Wei,Yu, Tian-Yang,Xu, Peng-Fei
, p. 2084 - 2088 (2021/03/01)
This report describes a method for Ni-catalyzed intramolecular decarbonylative coupling, which enables the conversion of areneselenol esters to diaryl selenides. The inexpensive and readily available catalyst can be employed under mild reaction conditions for the construction of structurally diverse diaryl selenides, including heterocyclic and natural product derivatives. (Figure presented.).
Metal-Free Synthesis of Phenol-Aryl Selenides via Dehydrogenative C-Se Coupling of Aryl Selenoxides with Phenols
Liu, Zhengfen,Jiang, Yonggang,Liu, Chunxiang,Zhang, Linlin,Wang, Jing,Li, Tiantian,Zhang, Hongbin,Li, Minyan,Yang, Xiaodong
, p. 7386 - 7398 (2020/08/21)
Herein, we disclose the synthesis of diaryl selenides through an unexpected C-Se coupling between aryl benzyl selenoxides and phenols. The synthetic significance of the method is that it provides a mild, rapid, and metal-free access to organoselenides in high yields with excellent functional group tolerance. This coupling of aryl benzyl selenoxides reveals a completely new reaction possibility compared with aryl sulfoxides. We also probed the reaction mechanism of this unexpected transformation through experimental studies and revealed a special Se(IV)-Se(III)-Se(II) reaction pathway.
Metal-Free Synthesis of Unsymmetrical Aryl Selenides and Tellurides via Visible Light-Driven Activation of Arylazo Sulfones
Fagnoni, Maurizio,Li, Ankun,Li, Yuxuan,Liu, Junjie,Lu, Kui,Protti, Stefano,Shan, Xiwen,Tian, Miaomiao,Zhao, Xia
supporting information, p. 7358 - 7367 (2020/12/01)
A protocol for the visible light driven preparation of unsymmetrical (hetero)aryl selenides and tellurides is described herein. The method exploits the peculiar photoreactivity of arylazo sulfones that act as thermally stable, precursors of aryl radicals under both photocatalyst- and additive-free conditions. The method developed shows an impressive versatility (more than fifty compounds isolated).
Dechalcogenization of Aryl Dichalcogenides to Synthesize Aryl Chalcogenides via Copper Catalysis
Cao, Fei,Chen, Jinhong,Deng, Jiedan,Deng, Xuemei,Hou, Yongsheng,Shao, Xiangfeng,Shi, Tao,Wang, Yongqiang,Wang, Zhen,Wu, Lingxi,Yang, Jinru,Yang, Yuhang
, p. 2707 - 2712 (2020/03/11)
An application for dechalcogenization of aryl dichalcogenides via copper catalysis to synthesize aryl chalcogenides is disclosed. This approach is highlighted by the practical conditions, broad substrate scope, and good functional group tolerance with several sensitive groups such as aldehyde, ketone, ester, amide, cyanide, alkene, nitro, and methylsulfonyl. Furthermore, the robustness of this methodology is depicted by the late-stage modification of estrone and synthesis of vortioxetine. Remarkably, synthesis of more challenging organic materials with large ring tension under milder conditions and synthesis of some halogen contained diaryl sulfides which could not be synthesized using metal-catalyzed coupling reactions of aryl halogen are successfully accomplished with this protocol.
Syntheses of Thioethers and Selenide Ethers from Anilines
Shieh, Yi-Chen,Du, Kai,Basha, R. Sidick,Xue, Yung-Jing,Shih, Bo-Hao,Li, Liang,Lee, Chin-Fa
, p. 6223 - 6231 (2019/05/24)
In this study, a general procedure was proposed for synthesizing thioethers and selenide ethers from anilines under solvent-free and transition-metal-free conditions. Thioethers were formed when anilines reacted with thiols under blue light-emitting-diode (LED) irradiation at room temperature without a photocatalyst. When reactions were performed using anilines and diselenides, the corresponding selenide ethers were obtained with satisfactory to excellent yields. The reaction was performed under photocatalyst-free and solvent-free conditions without blue LEDs. The advantages of this system include convenient operations, mild reaction conditions, satisfactory functional group tolerance, and late-stage selenylation of drug molecules.
Alternative Metal-Free Synthesis of Diorganoyl Selenides and Tellurides Mediated by Oxone
Perin, Gelson,Duarte, Luis Fernando B.,Neto, José S. S.,Silva, Márcio S.,Alves, Diego
supporting information, p. 1479 - 1484 (2018/05/03)
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 aryl boronic acids containing electron-rich, electron-poor, and sterically hindered substituents.
Efficient heterogeneous copper-catalysed C–Se coupling of aryl iodides with symmetrical diselenides towards unsymmetrical monoselenides
Zhao, Ruonan,Yan, Chenyu,Jiang, Yuanyuan,Cai, Mingzhong
, p. 584 - 588 (2018/11/27)
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 yields. This heterogeneous copper catalyst can be easily recovered by a simple filtration of the reaction solution and recycled at least seven times without significant loss of activity.
Silver-Catalyzed Synthesis of Diaryl Selenides by Reaction of Diaryl Diselenides with Aryl Boronic Acids
Goldani, Bruna,Ricordi, Vanessa G.,Seus, Natália,Lenard?o, Eder J.,Schumacher, Ricardo F.,Alves, Diego
supporting information, p. 11472 - 11476 (2016/11/28)
We described herein our results on the silver-catalyzed synthesis of diaryl selenides via a cross-coupling reaction of diaryl diselenides with aryl boronic acids. The methodology is tolerant to electron-donor and electron-withdrawing groups at the substrates and the desired products were obtained in good to excellent yields.
A Highly Efficient Copper-Catalyzed Synthesis of Unsymmetrical Diaryl- and Aryl Alkyl Chalcogenides from Aryl Iodides and Diorganyl Disulfides and Diselenides
Movassagh, Barahman,Hosseinzadeh, Zhila
supporting information, p. 777 - 781 (2016/03/12)
An efficient and convenient protocol has been developed for the copper-catalyzed reaction of aryl iodides and diorganyl disulfides and diselenides. A variety of symmetrical and unsymmetrical diaryl- and aryl alkyl chalcogenides were synthesized with good functional group tolerance and chemoselectivity by using copper(I) iodide as a catalyst, 4′-(4-methoxyphenyl)-2,2′:6′,2′′-terpyridine as ligand, and KOH as base under an inert atmosphere.
Synthesis of unsymmetrical diorganyl chalcogenides under greener conditions: Use of an iodine/DMSO system, solvent- and metal-free approach
Saba, Sumbal,Rafique, Jamal,Braga, Antonio L.
supporting information, p. 1446 - 1452 (2015/05/27)
Herein, we report a greener iodine-catalyzed protocol to access different types of unsymmetrical diorganyl chalcogenides. This new approach works in the absence of solvent and metal. The desired products were obtained in good to excellent yields using one equivalent of arylboronic acids, half an equivalent of various diorganyl dichalcogenides, iodine (10 mol%) as a catalyst and 2 equivalents of dimethyl sulfoxide (DMSO; as oxidant), with a reaction time of 10 min under microwave irradiation.
