Using easily accessible aromatic alkoxy-arylalkynones, we have investigated the gold-catalyzed intramolecular addition of ethers to alkynes, to give easy access to various substituted chromones. This reaction involves the transfer of the ether substituent via a carbodemetallation process. We also noticed a competing isomerization of several starting materials for which we propose a second gold catalyzed
使用易于获得的芳族烷氧基-芳基炔基酮,我们研究了醚在
炔烃中的
金催化分子内加成反应,从而可轻松获得各种取代的
色酮。该反应涉及经由碳羰基
金属化过程的醚取代基的转移。我们还注意到了几种原料的竞争异构化,为此我们提出了第二种
金催化机理。