<i>ortho</i>
‐Oxygenative 1,2‐Difunctionalization of Diarylalkynes under Merged Gold/Organophotoredox Relay Catalysis
作者:Shashank P. Sancheti、Manjur O. Akram、Rupam Roy、Vaibhav Bedi、Shubhankar Kundu、Nitin T. Patil
DOI:10.1002/asia.201901275
日期:2019.12.13
highly functionalized 2-(2-hydroxyaryl)-2-alkoxy-1-arylethan-1-ones. Detailed mechanistic studies suggested a relay process, initiating with gold-catalyzed hydroalkoxylation of alkynes, to generate enol-ether followed by a key formal [4+2]-cycloaddition reaction. The successful application of the present methodology was also shown for the synthesis of benzofurans.
本文报道的是在合并的金/有机光氧化还原催化下的二芳基炔烃的正加氧1,2-双官能化,以得到高度官能化的2-(2-羟基芳基)-2-烷氧基-1-芳基-1-酮。详细的机理研究表明,中继过程始于炔烃的金催化加氢烷氧基化反应,生成烯醇醚,然后进行关键的正式[4 + 2]-环加成反应。还显示了本方法的成功应用以合成苯并呋喃。