alkylated azobenzene derivativesvia the Pd(II)-catalyzed bidentate directing group (DG)-aided C–H activation and functionalization strategy. In the past, the synthesis of biaryl motif-based azobenzenes was accomplished through the traditional cross-coupling reaction involving organometallic reagents and aryl halides or equivalent coupling partners. We have shown the directcoupling of C–H bonds of aromatic/aliphatic
Copper-Mediated Cyanation of Aryl C-H Bond with Removable Bidenate Auxiliary Using Acetonitrile as the Cyano Source
作者:Zhengwei Yu、Saisai Zhang、Zengming Shen
DOI:10.1002/cjoc.201800334
日期:2018.12
Copper‐mediated cyanation of aryl C—Hbond with removable bidenate auxiliary as a directing group has been developed, in which green and cheap acetonitrile is used as the “CN” source. By switching the reaction conditions, the C—H cyanated products and N‐Ar‐phthalimides can be provided in acceptable yields with high chemoselectivity, respectively. The use of quaternary ammonium salt is essential for