Hydroaminoalkylation/Buchwald‐Hartwig Amination Sequences for the Synthesis of Novel Thieno‐ or Benzothieno‐Annulated Tetrahydropyridines, Tetrahydroazasilines, and Tetrahydroazasilepines
作者:Michael Warsitz、Stefan H. Rohjans、Marc Schmidtmann、Sven Doye
DOI:10.1002/ejoc.202001523
日期:2021.2.5
Hydroaminoalkylation reactions of 2‐allyl‐, 2‐allyldimethylsilyl‐, or 2‐dimethyl(vinyl)silyl‐substituted 3‐bromothiophenes or 3‐bromobenzothiophenes with secondary amines deliver the branched or the linear addition products with high regioselectivity. A combination of this reaction with a subsequent intramolecular Buchwald‐Hartwig amination results in several one‐pot processes that give direct access