Palladium-Catalyzed, Ring-Forming Aromatic C–H Alkylations with Unactivated Alkyl Halides
作者:Alexander R. O. Venning、Patrick T. Bohan、Erik J. Alexanian
DOI:10.1021/jacs.5b01365
日期:2015.3.25
using unactivated alkylhalides and a variety of arenes and heteroarenes is described. This ring-forming process is successful with a variety of unactivated primary and secondaryalkylhalides, including those with β-hydrogens. In contrast to standard polar or radical cyclizations of aromatic systems, electronic activation of the substrate is not required. The mild, catalytic reaction conditions are highly
Ligand-Free Palladium(II)-Catalyzed <i>ortho</i>
-C-H Chalcogenations of <i>N</i>
-Arylsulfonamide via Weak Coordination
作者:Linghui Gu、Xinyue Fang、Zhengyun Weng、Yupin Song、Wenbo Ma
DOI:10.1002/ejoc.201900050
日期:2019.2.28
The first palladium(II)‐catalyzed direct ortho‐C(sp2)–H chalcogenations of N‐arylsulfonamide via weak coordination have been achieved. This strategy features ligand/additive‐free conditions, broad substrate scope with excellent functional group tolerance and a high position selectivity.