Visible-light-induced synthesis of benzothiophenes and benzoselenophenes via the annulation of thiophenols or 1,2-diphenyldiselane with alkynes

TETRAHEDRON

卷:73

Article

Xia, Xiao-Feng¹  Zhang, Guo-Wei¹  Zhu, Su-Li¹ 

[1] Jiangnan Univ, Sch Chem & Mat Engn, Key Lab Food Colloids & Biotechnol, Minist Educ, Wuxi 214122, Jiangsu, Peoples R China

关键词: Visible-light-induced;    Tandem addition/cyclization;    Benzothiophenes;    Benzoselenophenes;    Photoredox catalysis;   

DOI  :  10.1016/j.tet.2017.03.053

来源: Elsevier

【 摘 要 】

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.

【 授权许可】

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