Visible-light-induced synthesis of benzothiophenes and benzoselenophenes via the annulation of thiophenols or 1,2-diphenyldiselane with alkynes
作者:Xiao-Feng Xia、Guo-Wei Zhang、Su-Li Zhu
DOI:10.1016/j.tet.2017.03.053
日期:2017.5
An effective metal-free photoredox-mediated tandem addition/cyclization reaction of thiophenols or 1,2-diphenyldiselane with alkynes leads to 2,3-disubstituted benzothiophenes and benzoselenophenes. Blue light irradiation of the organic dye, Mes-Acr-Me+, initiates the photoredox catalysis. A series of functional groups could be tolerated under ambient conditions, and good to excellent yields were generated. (C) 2017 Elsevier Ltd. All rights reserved.
Direct Benzothiophene Formation via Oxygen-Triggered Intermolecular Cyclization of Thiophenols and Alkynes Assisted by Manganese/PhCOOH
作者:Kaisheng Liu、Fan Jia、Hui Xi、Yuanming Li、Xiaojian Zheng、Qiaoxia Guo、Baojian Shen、Zhiping Li
DOI:10.1021/ol400719d
日期:2013.4.19
An intermolecular oxidative cyclization between thiophenols and alkynes for benzothiophene formation has been established. A variety of multifunctional benzothiophenes are synthesized. In addition, we demonstrated that the obtained benzothiophenes can be used for further transformation to give diverse benzothiophene derivatives efficiently and selectively.
Air promoted annulation of thiophenols with alkynes leading to benzothiophenes
作者:Yajun Wang、Rui Wu、Shijun Zhao、Zhengjun Quan、Yingpeng Su、Congde Huo
DOI:10.1039/c8ob00010g
日期:——
Air promoted intermolecular annulation of thiophenols with alkynes, leading to complex benzothiophenes, is reported.