Sonochemistry: An efficient alternative to the synthesis of 3-selanylindoles using CuI as catalyst
摘要:
Ultrasonic (US) irradiation was successfully used as an alternative energy source to prepare 3-selanylindoles through the direct selanylation of indoles with diorganyl diselenides using CuI (20 mol%) as catalyst and DMSO as the solvent. By using this US-promoted reaction, eleven 3-organylselanylindoles were prepared selectively and in good yields. A comparative study between the reactions under conventional heating, microwave and ultrasound irradiations was performed, and it was observed advantage in using US over the other heating systems. (C) 2015 Elsevier B.V. All rights reserved.
The ionic liquid 1-butyl-3-methylimidazolium methylselenite, [bmim][SeO2(OCH3)], was successfully used as solvent in the catalyst-free preparation of 3-arylselenylindoles by the reaction of indole with ArSeCl at room temperature. The products were obtained selectively in good yields without the need of any additive and the solvent was easily reused for several cycles with good results.
Micelle-mediated multicomponent cross-coupling in water: general construction of 3-chalcogenylindoles
作者:Xi He、Weili Song、Xuemin Liu、Jiamin Huang、Ruilong Feng、Shaodong Zhou、Jianquan Hong、Xin Ge
DOI:10.1039/d2gc03694k
日期:——
A general and sustainable multicomponent cross-coupling for the construction of 3-chalcogenylindoles from indoles with aryl iodides and elemental sulfur under the aqueous micellar condition was developed. Elemental sulfur is employed as an eco-friendly and easy-handling sulfur source of thiyl radicals. The synergic effect between Cu catalysts and micelles formed by the sugar-based surfactant GluM can
Efficient synthesis of 3-selanyl- and 3-sulfanylindoles employing trichloroisocyanuric acid and dichalcogenides
作者:Claudio C. Silveira、Samuel R. Mendes、Lucas Wolf、Guilherme M. Martins、Lisandro von Mühlen
DOI:10.1016/j.tet.2012.09.022
日期:2012.12
3-Arylselanyl- and 3-arylsulfanylindoles were prepared in EtOAc, by the reaction of indole with the diaryl dichalcogenide-trichloroisocyanuric acid (TCCA) reagent system. The products were efficiently and conveniently obtained, at room temperature and in short reaction times. (C) 2012 Elsevier Ltd. All rights reserved.
Direct selenation of imidazoheterocycles and indoles with selenium powder in a copper-catalyzed three-component one-pot system
作者:Tao Guo、Zhe Dong、Panke Zhang、Weiqin Xing、Liping Li
DOI:10.1016/j.tetlet.2018.05.046
日期:2018.6
An efficient and convenient Cu-catalyzed three-component reaction is described for the selenation of imidazoheterocycles/indoles with Se powder and aryl iodides. This procedure provides diverse 3-arylselenylimidazoheterocycles and 3-arylselenylindoles with good yields and functional group tolerance. Some of the products exhibited better or comparable antiproliferative activities compared with the positive control 5-fluorouracil against H1975, PC-9, HGC-27, EC-109, and MCF-7 cancer cell lines. (C) 2018 Elsevier Ltd. All rights reserved.
Sonochemistry: An efficient alternative to the synthesis of 3-selanylindoles using CuI as catalyst
作者:Beatriz M. Vieira、Samuel Thurow、Juliana S. Brito、Gelson Perin、Diego Alves、Raquel G. Jacob、Claudio Santi、Eder J. Lenardão
DOI:10.1016/j.ultsonch.2015.05.012
日期:2015.11
Ultrasonic (US) irradiation was successfully used as an alternative energy source to prepare 3-selanylindoles through the direct selanylation of indoles with diorganyl diselenides using CuI (20 mol%) as catalyst and DMSO as the solvent. By using this US-promoted reaction, eleven 3-organylselanylindoles were prepared selectively and in good yields. A comparative study between the reactions under conventional heating, microwave and ultrasound irradiations was performed, and it was observed advantage in using US over the other heating systems. (C) 2015 Elsevier B.V. All rights reserved.