Cu(II)‐Catalyzed
<i>Ortho</i>
‐Selective Amination of Simple Phenols with
<i>O</i>
‐Benzoylhydroxylamines
作者:Nan‐Qi Shao、Zhi‐Li Yao、Dong‐Hui Wang
DOI:10.1002/ijch.201900171
日期:2020.3
A Cu(II)‐catalyzed ortho‐selective amination of simple phenols with O‐benzoylhydroxylamines has been developed, which provides access to 2‐aminophenols under mild conditions. Various functional groups on the phenol and electrophilic amine are compatible, and the protocol typically delivers the products in moderate to good yields. The mechanistic detail of this process are discussed.
Intramolecular<i>trans-</i>Dicarbofunctionalization of Alkynes by a Formal<i>anti</i>-Carbopalladation/Stille Cascade
作者:Bastian Milde、Andreas Reding、Finn J. Geffers、Peter G. Jones、Daniel B. Werz
DOI:10.1002/chem.201603784
日期:2016.10.4
An intramolecular Pd‐catalyzed trans‐dicarbofunctionalization of internal alkynes using aryl bromides and aryl stannanes is presented. Tetrasubstituted double bonds embedded in an oligocyclic ring system are obtained in a regio‐ and diastereoselective fashion. The transformation features a broad substrate scope and functional‐group tolerance.