Construction of 2,2-Dimethyloxepane Frameworks from Ene-Diols Catalyzed by Metal Catalyst or Brønsted Acid <i>via</i> 7-<i>Endo</i>-<i>Trig</i> Cyclization
作者:Ryo Murakami、Kakeru Maeda、Fuyuhiko Inagaki
DOI:10.1248/cpb.c21-00400
日期:2021.9.1
synthesis of 2,2-dimethyloxepane frameworks based on the 7-endo-trig cyclization of ene-diol using a catalytic amount of metal catalysts (Au, Ag) or Brønstedacid (TfOH) has been developed. Also, the spiro-type dioxabicyclic products were also derived from the diene-diols. For the condition using metal catalysts, the cyclization selectively reacted between the 1,1,3-trisubstituted alkenes and alcohols
Coinage metal catalyzed 7-endo-trig cyclization of ene-diols: Construction of 2,2-dimethyloxepane frameworks
作者:Kakeru Maeda、Ryo Murakami、Fuyuhiko Inagaki
DOI:10.1016/j.tetlet.2019.151038
日期:2019.9
The silver catalyzed 7-endo-trig cyclization of an ene-diol for the formation of 2,2-dimethyloxepane frameworks has been developed. The spirotype dioxabicyclic products were also produced from the diene-diols. In addition, a gold catalyst featuring the Z-ligand also produced similar cyclization reactions. (C) 2019 Published by Elsevier Ltd.