2-difunctionalized benzenes, the sites other than its formal triple bond remain silent in typical benzyne transformations. An unprecedented aryne 1,2,3,5-tetrasubstitution was realized from 3-silylbenzyne and aryl allyl sulfoxide, the mechanistic pathway of which includes a regioselective aryne insertion into the S═O bond, a [3,6]-sigmatropic rearrangement, and a thermal aromatic 1,3-silyl migration cascade.
Synthesis of Biaryl Compounds through Three-Component Assembly: Ambidentate Effect of the<i>tert</i>-Butyldimethylsilyl Group for Regioselective Diels-Alder and Hiyama Coupling Reactions
作者:Shuji Akai、Takashi Ikawa、Sho-ichi Takayanagi、Yuki Morikawa、Shinya Mohri、Masaya Tsubakiyama、Masahiro Egi、Yasufumi Wada、Yasuyuki Kita