Gold-Catalyzed Oxidative Hydrative Alkenylations of Propargyl Aryl Thioethers with Quinoline <i>N</i>-Oxides Involving a 1,3-Sulfur Migration
作者:Sachin Bhausaheb Wagh、Rahulkumar Rajmani Singh、Rajkumar Lalji Sahani、Rai-Shung Liu
DOI:10.1021/acs.orglett.9b00705
日期:2019.4.19
This work reports gold-catalyzed oxidative alkenylations of quinoline N-oxides with propargyl aryl thioethers to afford 3-hydroxy-1-alkylidenephenylthiopropan-2-one via a 1,3-sulfur group migration. The mechanism of this reaction is postulated to involve an α-oxo gold carbene intermediate followed by formation of a four-membered sulfonium ring that is ring-opened by one H2O to form a gold enolate. A