Synthesis of benzo[<i>b</i>]furans from alkynyl sulfoxides and phenols by the interrupted Pummerer reaction
作者:Akihiro Kobayashi、Tsubasa Matsuzawa、Takamitsu Hosoya、Suguru Yoshida
DOI:10.1039/d2ra07856b
日期:——
The interrupted Pummerer reaction of alkynyl sulfoxides with phenols is disclosed. A wide range of benzo[b]furans were efficiently synthesized through unexplored electrophilic activation of the electron-deficient alkynyl sulfinyl group. Based on the good availability of alkynyl sulfoxides, we successfully prepared various functionalized benzo[b]furans from readily available alkynes, thiosulfonates
公开了炔基亚砜与酚类的间断 Pummerer 反应。通过未探索的缺电子炔基亚磺酰基的亲电活化,有效合成了多种苯并[ b ]呋喃。基于炔基亚砜的良好可用性,我们成功地从容易获得的炔烃、硫代磺酸盐和苯酚制备了各种功能化的苯并[ b ]呋喃。
Highly substituted benzo[b]furan synthesis through substituent migration
作者:Akihiro Kobayashi、Shinya Tabata、Suguru Yoshida
DOI:10.1039/d4cc01192a
日期:——
unusual benzofuran synthesis from 2,6-disubstituted phenols and alkynyl sulfoxides is disclosed. Various highlysubstituted benzofurans were synthesized via the charge-accelerated [3,3]-sigmatropic rearrangement and subsequent substituent migration. Multiaryl-substituted benzofurans and fully substituted benzofurans were prepared on the basis of the unique reaction mechanism.