Stereo‐ and Regioselective Cu‐Catalyzed Hydroboration of Alkynyl Chalcogenoethers
作者:Isadora M. Oliveira、Henrique A. Esteves、Mariana P. Darbem、Arthur Sartorelli、Thiago C. Correra、André F. Rodrigues‐Oliveira、Daniel C. Pimenta、Julio Zukerman‐Schpector、Flávia Manarin、Hélio A. Stefani
DOI:10.1002/cctc.202000395
日期:2020.7.6
A mild stereo‐ and regioselective Cu‐catalyzed hydroboration method for the synthesis of (Z)‐seleno‐alkenyl boronates and (Z)‐thio‐alkenylboronates from internal alkynes in the presence of commercially available B2pin2 is presented. This highly selective transformation relies on the use of N‐heterocyclic carbene (NHC) complex IPrCuCl as the active catalytic species. We also explore the functionalization