title: Visible-light-mediated C2-amination of thiophenes by using DDQ as an organophotocatalyst.
abstract: In this work, a direct C-H activation of thiophenes was presented via an oxidation pathway under visible-light irradiation, in which the thiophene radical cation serves as the key intermediate. Various thiophenes and azoles could be transformed into the corresponding amination products well, and H2O was the only byproduct which is environmentally benign. Our results showed that tert-butyl nitrite (TBN) served as the electron transfer mediator and O2as the terminal oxidant to regenerate the photocatalyst DDQ and revive the photocatalytic cycle.
authors.affiliation: College of Chemistry and Molecular Sciences, The Institute for Advanced Studies, Wuhan University, Wuhan, Hubei 430072, People's Republic of China. aiwenlei@whu.edu.cn.
authors.forename: Chunlan
authors.initials: C
authors.lastname: Song
authors.affiliation: College of Chemistry and Molecular Sciences, The Institute for Advanced Studies, Wuhan University, Wuhan, Hubei 430072, People's Republic of China. aiwenlei@whu.edu.cn.
authors.forename: Hong
authors.initials: H
authors.lastname: Yi
authors.affiliation: College of Chemistry and Molecular Sciences, The Institute for Advanced Studies, Wuhan University, Wuhan, Hubei 430072, People's Republic of China. aiwenlei@whu.edu.cn.
authors.forename: Bowen
authors.initials: B
authors.lastname: Dou
authors.affiliation: College of Chemistry and Molecular Sciences, The Institute for Advanced Studies, Wuhan University, Wuhan, Hubei 430072, People's Republic of China. aiwenlei@whu.edu.cn.
authors.forename: Yiying
authors.initials: Y
authors.lastname: Li
authors.affiliation: College of Chemistry and Molecular Sciences, The Institute for Advanced Studies, Wuhan University, Wuhan, Hubei 430072, People's Republic of China. aiwenlei@whu.edu.cn.
authors.forename: Atul K
authors.initials: AK
authors.lastname: Singh
authors.affiliation: College of Chemistry and Molecular Sciences, The Institute for Advanced Studies, Wuhan University, Wuhan, Hubei 430072, People's Republic of China. aiwenlei@whu.edu.cn and State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, P. R. China.
authors.forename: Aiwen
authors.identifier: http://orcid.org/0000-0001-8417-3061
authors.initials: A
authors.lastname: Lei