title: Synthesis of stilbene derivatives via visible-light-induced cross-coupling of aryl diazonium salts with nitroalkenes using -NO2as a leaving group.
abstract: The straightforward visible-light-induced synthesis of stilbene compounds via the cross-coupling of nitroalkenes and diazonium tetrafluoroborates under transition-metal-free conditions is described. The protocol uses green LEDs as light sources and eosin Y as an organophotoredox catalyst. Broad substrate scope and exclusive selectivity for the (E)-configuration of stilbenes are observed. This protocol proceeds via a radical pathway, with nitroalkenes serving as the radical acceptor, and the nitro group is cleaved during the process.
authors.affiliation: Key Laboratory of Polymer Materials, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu 730070, P. R. China. wangxicun@nwnu.edu.cn quanzhengjun@hotmail.com.
authors.forename: Na
authors.initials: N
authors.lastname: Zhang
authors.affiliation: Key Laboratory of Polymer Materials, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu 730070, P. R. China. wangxicun@nwnu.edu.cn quanzhengjun@hotmail.com.
authors.forename: Zheng-Jun
authors.initials: ZJ
authors.lastname: Quan
authors.affiliation: Key Laboratory of Polymer Materials, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu 730070, P. R. China. wangxicun@nwnu.edu.cn quanzhengjun@hotmail.com.
authors.forename: Zhang
authors.initials: Z
authors.lastname: Zhang
authors.affiliation: Key Laboratory of Polymer Materials, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu 730070, P. R. China. wangxicun@nwnu.edu.cn quanzhengjun@hotmail.com.
authors.forename: Yu-Xia
authors.initials: YX
authors.lastname: Da
authors.affiliation: Key Laboratory of Polymer Materials, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu 730070, P. R. China. wangxicun@nwnu.edu.cn quanzhengjun@hotmail.com.
authors.forename: Xi-Cun
authors.initials: XC
authors.lastname: Wang